67 results on '"Klaus Dehmelt"'
Search Results
2. Transverse single spin asymmetries of forward neutrons in p+p , p+Al , and p+Au collisions at sNN=200 GeV as a function of transverse and longitudinal momenta
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Norbert Novitzky, Mate Csanad, Tetsuya Murakami, J. Ali Hanks, Raphael Cervantes, Klaus Dehmelt, Andrey Yanovich, Sergey Fokin, Manabu Togawa, Xuan Li, Sourav Tarafdar, Margaret Jezghani, Serpil Yalcin Kuzu, and Jin Huang
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- 2022
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3. Transverse-single-spin asymmetries of charged pions at midrapidity in transversely polarized p+p collisions at s=200 GeV
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Norbert Novitzky, Mate Csanad, J. Ali Hanks, Raphael Cervantes, Klaus Dehmelt, Andrey Yanovich, Sergey Fokin, Xuan Li, Benard Mulilo, Sourav Tarafdar, Margaret Jezghani, Serpil Yalcin Kuzu, and Jin Huang
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- 2022
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4. Kinematic dependence of azimuthal anisotropies in p+Au, d+Au, and He3+Au at sNN=200GeV
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Norbert Novitzky, Mate Csanad, Venktesh Singh, Dong Jo Kim, Tetsuya Murakami, J. Ali Hanks, Raphael Cervantes, Klaus Dehmelt, Andrey Yanovich, Sergey Fokin, Xuan Li, Benard Mulilo, Sourav Tarafdar, Margaret Jezghani, Serpil Yalcin Kuzu, and Jin Huang
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- 2022
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5. Probing Gluon Spin-Momentum Correlations in Transversely Polarized Protons through Midrapidity Isolated Direct Photons in p↑+p Collisions at s=200 GeV
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S. F. Pate, Y. L. Yamaguchi, C. Xu, D. Ivanishchev, V. Papavassiliou, Hari Guragain, C. E. Perezlara, H. Asano, A. Sexton, T. Murakami, P. Montuenga, Y. Riabov, R. Seto, N. Grau, T. W. Danley, Takafumi Niida, J. Huang, A. Franz, J. Runchey, A. Sen, Prakhar Garg, K. A. Drees, N. Feege, Kenta Shigaki, R. Cervantes, Iu. Mitrankov, L. Zou, J. Bryslawskyj, J. E. Frantz, D. Reynolds, M. Rosati, B. Mulilo, Sándor Lökös, Tamás Csörgő, K. N. Barish, A. S. Nyanin, J. Klatsky, S. Zharko, N. Cronin, A. Deshpande, Dillon Scott Fitzgerald, Kei Nagashima, M. Snowball, D. McGlinchey, R. A. Soltz, N. Ramasubramanian, H. En'yo, Alexei Khanzadeev, M. J. Leitch, V. Canoa Roman, John Hill, M. Tomášek, D. E. Fields, X. Jiang, Rachid Nouicer, Xiong Wang, A. N. Zelenski, S. P. Sorensen, B. Kurgyis, B. V. Jacak, Minghui Liu, Brajesh K. Singh, G. J. Ottino, Toru Sugitate, W. Peng, P. W. Stankus, Kensuke Homma, I. J. Choi, M. L. Brooks, L. Bichon, C. L. Woody, M. Alfred, M. Grosse Perdekamp, Kenneth Francis Read, Y. J. Kwon, J. B. Choi, X. He, A. Berdnikov, Y. H. Leung, Raphael Noel Tieulent, A. V. Kazantsev, F. Giordano, Satoshi Sato, S. Kudo, R. Corliss, N. S. Bandara, Vladimir Samsonov, Christine Nattrass, T. Hachiya, S. K. Park, M. I. Nagy, Dipak Kumar Mishra, Kenichi Imai, Petr Gallus, T. O. S. Haseler, D. A. Loomis, D. Kapukchyan, Jong-Min Park, Taku Gunji, G. D. N. Perera, Qiao Xu, David Olle Rickard Silvermyr, Y. Goto, M. Phipps, Motoi Inaba, T. Nagashima, Y. Fukuda, I. V. Sourikova, Hideki Hamagaki, W. Fan, G. David, T. Todoroki, E. J. Mannel, K. I. Hahn, J. G. Lajoie, S. Lee, Jennifer E. Perry, Xiao-yan Li, Alexander Milov, J. Hanks, Hiroyuki Sako, M. Patel, N. Apadula, A. Durum, A. Iordanova, Keiji Nagai, A. Drees, S. H. Lim, S. Y. Han, Z. Ji, D. Yu Peressounko, A. Yanovich, I. Nakagawa, Z. Rowan, Dennis Perepelitsa, M. Mendoza, S. Karthas, J. L. Nagle, C. Pinkenburg, D. Kotov, D. S. Jumper, Kyoichiro Ozawa, D. P. Morrison, A. Sukhanov, K. Kurita, S. Campbell, M. Csanad, S. P. Stoll, G. Nukazuka, Min-Hye Kim, G. Tarnai, H. Ge, K. Nakano, Z. Sun, W. E. Sondheim, Arkadiy Taranenko, S. H. Lee, I. Tserruya, M. Jezghani, D. Larionova, T. Majoros, D. Sharma, V. Singh, A. Hodges, T. Shioya, R. Esha, S. D. Rolnick, M. Slunečka, P. L. McGaughey, S. Tarafdar, V. Babintsev, N. Novitzky, R. P. Pisani, T. Koblesky, T. Moon, Senta Greene, Viktor Riabov, Serpil Yalcin, M. Sarsour, D. Jouan, Y. Corrales Morales, V. Bumazhnov, S. Nelson, Byung-Sik Hong, B. Fadem, E. O'Brien, K. L. Smith, M. Harvey, U. Acharya, M. McCumber, Anne Marie Sickles, J. Murata, Chong Kim, A. Bazilevsky, S. Bathe, M. Chiu, Dmitry Blau, B. Schaefer, C. P. Wong, P. V. Radzevich, M. Connors, T. A. Shibata, W. A. Zajc, L. Xue, Alexandre Lebedev, C. A. Ogilvie, T. K. Hemmick, E. J. Desmond, Eunja Kim, A. Denisov, J. S. Bok, G. Mitsuka, A. Pun, J. H. Kang, J. S. Haggerty, Sergey Fokin, K. DeBlasio, D. Isenhower, Tamas Novak, Balazs Ujvari, M. Giles, M. Mitrankova, I. E. Yushmanov, C. Gal, Klaus Dehmelt, Julia Velkovska, A. Khatiwada, D. Dixit, S. Mizuno, M. Beaumier, H. W. Van Hecke, B. Blankenship, Agneta Oskarsson, D. Kincses, John Matthew Durham, Y. Berdnikov, Y. Akiba, C. McKinney, Vaclav Vrba, K. Hill, Maya Hachiya Shimomura, R. S. Hollis, Y. I. Makdisi, M. M. Mondal, M. J. Tannenbaum, B. K. Schmoll, S. Esumi, Martin Purschke, C. A. Aidala, Alice Mignerey, S. Miyasaka, Shoichi Hasegawa, Takao Sakaguchi, A. D. Frawley, V. Andrieux, S. Huang, V. Khachatryan, A. Kingan, H. F. Hamilton, D. Kawall, B. Azmoun, K. Tanida, E. Kistenev, J. H. Yoo, R. Belmont, Zvi Hirsh Citron, P. Kline, A. Dion, I. Shein, J. Sun, V. R. Loggins, J. T. Mitchell, K. Sedgwick, N. Hotvedt, R. Seidl, Vladislav Manko, Mihael Makek, H. Yamamoto, C. L. Silva, A. Enokizono, Y. Watanabe, V. Pantuev, R. S. Towell, A. Timilsina, K. Lovasz, D. Lynch, M. Potekhin, T. Hoshino, D. Richford, A. S. Safonov, Yoshifumi Ueda, J. H. Do, C. L. Towell, N. Vukman, Timothy Thomas Rinn, H. Yu, T. Sumita, C. Y. Chi, M. S. Daugherity, C. P. Singh, J. D. Osborn, Inseok Yoon, R. Petti, B. M. Johnson, N. A. Lewis, M. Finger, J. Sziklai, M. Virius, J. D. Orjuela Koop, and Prashant Shukla
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Physics ,Photon ,Proton ,010308 nuclear & particles physics ,Nuclear Theory ,Hadron ,Strong interaction ,General Physics and Astronomy ,7. Clean energy ,01 natural sciences ,Gluon ,Nuclear physics ,Momentum ,0103 physical sciences ,High Energy Physics::Experiment ,PHENIX detector ,Nuclear Experiment ,010306 general physics ,Relativistic Heavy Ion Collider - Abstract
Studying spin-momentum correlations in hadronic collisions offers a glimpse into a three-dimensional picture of proton structure. The transverse single-spin asymmetry for midrapidity isolated direct photons in p ↑ + p collisions at s = 200 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC). Because direct photons in particular are produced from the hard scattering and do not interact via the strong force, this measurement is a clean probe of initial-state spin-momentum correlations inside the proton and is in particular sensitive to gluon interference effects within the proton. This is the first time direct photons have been used as a probe of spin-momentum correlations at RHIC. The uncertainties on the results are a 50-fold improvement with respect to those of the one prior measurement for the same observable, from the Fermilab E704 experiment. These results constrain gluon spin-momentum correlations in transversely polarized protons.
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- 2021
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6. Results From a Prototype Combination TPC Cherenkov Detector With GEM Readout
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W. Roh, Aiwu Zhang, N. Smirnov, H. N. Nguyen, Klaus Dehmelt, B. Azmoun, C. Woody, D. Shangase, N. Ram, T. Hemmick, M. L. Purschke, Michael William Phipps, and R. Majka
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Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,Physics::Instrumentation and Detectors ,Cherenkov detector ,FOS: Physical sciences ,01 natural sciences ,Photocathode ,Particle identification ,High Energy Physics - Experiment ,law.invention ,High Energy Physics - Experiment (hep-ex) ,Optics ,law ,0103 physical sciences ,Fermilab ,Nuclear Experiment (nucl-ex) ,Electrical and Electronic Engineering ,Nuclear Experiment ,Cherenkov radiation ,Physics ,Time projection chamber ,010308 nuclear & particles physics ,business.industry ,Detector ,Instrumentation and Detectors (physics.ins-det) ,Nuclear Energy and Engineering ,Gas electron multiplier ,business - Abstract
A combined time projection chamber-Cherenkov (TPCC) prototype detector has been developed as part of the detector research and development program for a future electron–ion collider (EIC). The prototype was tested at the Fermilab test beam facility (FTBF) to provide a proof of the principle to demonstrate the ability to measure particle tracks and provide particle identification (PID) information within a common detector volume. The time projection chamber (TPC) portion consists of a $10 \times 10 \times 10$ cm3 field cage, which delivers charge from tracks to a quadruple gas electron multiplier (GEM) with zigzag-shaped charge collection anodes. The Cherenkov portion consists of a photosensitive quadruple GEM detector with a CsI photocathode. As tracks pass through the drift volume of the TPC, the generated Cherenkov light is able to escape through sparsely arranged wires making up one side of the field cage, facing the CsI photocathode. The Cherenkov detector is thus operated in a windowless, proximity focused configuration for high efficiency. Pure CF4 is used as the working gas for both detector components, mainly due to its transparency into the deep UV, as well as its high N0. Results from the beam test, including the position resolution as well as the particle id capabilities of the detector, are discussed in this paper.
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- 2019
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7. Production of π0 and η mesons in U+U collisions at sNN=192 GeV
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S. Y. Han, M. Gonin, A. Berdnikov, D. Kawall, Agneta Oskarsson, V. Bumazhnov, Y. Nakamiya, D. Lynch, D. Kincses, John Matthew Durham, M. Nihashi, D. Black, Hideyuki Oide, A. Sukhanov, M. Larionova, Y. Berdnikov, Dmitry Blau, K. Kurita, Y. Akiba, A. V. Kazantsev, N. Crossette, C. McKinney, S. Nagamiya, N. Novitzky, A. Meles, R. P. Pisani, Vaclav Vrba, S. Park, J. Murata, P. Sett, Alice Mignerey, D. E. Fields, C. O. Kim, L. D'Orazio, S. Miyasaka, A. Franz, R. Pak, U. Acharya, M. McCumber, B. Meredith, K. Ozawa, A. Garishvili, B. V. Jacak, E. Vazquez-Zambrano, I. Garishvili, S. Hasegawa, Y. J. Kwon, I. Shein, B. Komkov, R. A. Soltz, M. Grosse Perdekamp, G. David, L. Patel, X. Bai, F. Giordano, I. V. Sourikova, T. Hachiya, John Hill, Peter Christiansen, Z. Ji, D. Kotov, D. Yu Peressounko, X. Sun, Takao Sakaguchi, A. Ster, Takafumi Niida, J. Huang, B. Sahlmueller, E. J. Desmond, S. Nelson, Y. Sekiguchi, T. C. Awes, N. Riveli, Norio Saito, K. Sedgwick, D. S. Jumper, Henner Buesching, Y. Fukao, S. Solano, H. A. Torii, B. Kurgyis, Toru Sugitate, I. E. Yushmanov, K. B. Lee, H. Qu, A. D. Frawley, Y. J. Kim, Jason Kamin, B. M. Johnson, Mihael Makek, S. Butsyk, M. Csanad, L. Ding, Tsutomu Mibe, J. S. Kang, Charles Maguire, T. Hester, J. Seele, Peter Steinberg, M. Kofarago, Prakhar Garg, Vladimir Samsonov, B. Bannier, Animesh Datta, X. Gong, C. Y. Chi, D. Roach, A. Shaver, S. Choi, J. T. Mitchell, Y. Zhai, Christine Nattrass, M. Slunečka, S. Huang, T. Todoroki, K. M. Kijima, P. L. McGaughey, A. Pun, A. Sen, D. Larionova, M. Potekhin, François Fleuret, Alexei Khanzadeev, Sung Keun Park, A. Enokizono, Martin Purschke, V. S. Pantuev, R. Seidl, Vladislav Manko, C. A. Aidala, K. Hashimoto, R. S. Towell, Kiyoshi Tanida, L. Bichon, Xingguo Li, J. S. Kapustinsky, V. Babintsev, E. Stenlund, C. Baumann, J. B. Choi, N. N. Ajitanand, Prashant Shukla, S. F. Pate, T. Hoshino, A. Isinhue, E. Kistenev, Dipak Kumar Mishra, M. Kurosawa, M. I. Nagy, Tomofumi Nagae, B. Ujvari, G. D. N. Perera, A. Taranenko, Ke. Nakamura, D. Jouan, N. Ramasubramanian, X. Jiang, Maya Hachiya Shimomura, R. S. Hollis, S. P. Sorensen, R. Belmont, S. Wolin, Takahiro Nakamura, J. L. Nagle, D. McGlinchey, W. J. Metzger, D. Richford, Y. I. Makdisi, M. S. Ryu, S. J. Jeon, Takahiro Fusayasu, M. Leitgab, Viktor Riabov, K. Okada, Yoshifumi Ueda, J. H. Do, Qiao Xu, Brajesh K. Singh, J. A. Key, Ryugo S. Hayano, L. Zou, B. Lewis, D. Watanabe, Soumya Mohapatra, M. J. Leitch, A. Durum, Pawan Kumar Netrakanti, J. Sun, E. Vznuzdaev, D. Silvermyr, Motoi Inaba, A. Timilsina, A. Deshpande, M. Stepanov, Y. Riabov, J. Bryslawskyj, Kenta Shigaki, D. Ivanishchev, S. Baumgart, N. Apadula, Minghui Liu, T. V. Moukhanova, A. Drees, V. Papavassiliou, C. E. Perezlara, Hari Guragain, S. Mizuno, M. Moskowitz, A. Yanovich, H. W. Van Hecke, S. Whitaker, Jennifer E. Perry, A. S. Nyanin, M. J. Tannenbaum, Rachid Nouicer, A. N. Zelenski, Kenneth Francis Read, J. Hanks, T. Ichihara, Hiroyuki Sako, Sook Hyun Lee, T. Murakami, Yi Gu, B. Blankenship, M. Mendoza, J. G. Lajoie, Kensuke Homma, E. Richardson, C. L. Silva, Y. Tanaka, Y. Watanabe, V. Khachatryan, H. Asano, E. Tennant, M. S. Daugherity, C. P. Singh, I. Younus, M. Tomášek, M. Skolnik, James Alexander, Filip Krizek, N. A. Lewis, M. R. Stone, K. Nakano, S. Bathe, W. E. Sondheim, B. Azmoun, R. J. Petti, S. I. Morrow, S. Sawada, D. Firak, Byung-Sik Hong, J. Runchey, A. Bazilevsky, T. Novák, K. Boyle, C. P. Wong, M. Chiu, C. A. Ogilvie, M. Connors, W. A. Zajc, Brian Cole, Alexandre Lebedev, P. Kline, K. S. Lee, T. Majoros, T. K. Hemmick, D. M. Lee, G. H. Lee, V. Baublis, A. Denisov, Yuki Watanabe, V. Cianciolo, M. Beaumier, Sergey Fokin, D. Sharma, K. S. Joo, I. J. Choi, B. Xia, S. Esumi, Dennis Perepelitsa, Yasuo Miake, Anne Marie Sickles, K. Gainey, J. S. Bok, D. Kotchetkov, K. DeBlasio, Atsushi Takahara, K. A. Drees, J. Rak, K. O. Eyser, J. Klatsky, S. H. Lim, R. Lacey, R. Granier de Cassagnac, Jongmin Lee, K. L. Smith, P. K. Khandai, A. Taketani, Y. Ikeda, E. J. Mannel, T. Rinn, Yanjun Wu, R. Akimoto, C. Gal, K. Watanabe, C. Pinkenburg, Klaus Dehmelt, Julia Velkovska, A. Khatiwada, Z. Sun, Taku Gunji, M. Patel, M. Rosati, Tamás Csörgő, S. Tarafdar, M. Virius, E. T. Atomssa, Senta Greene, B. Fadem, E. O'Brien, Jiangyong Jia, Y. Goto, C. H. Chen, S. Yokkaichi, D. Kleinjan, S. Campbell, S. Zhou, A. Manion, R. Esha, J. H. Kang, I. Ravinovich, J. S. Haggerty, S. D. Rolnick, M. Bai, Y. S. Lai, J. D. Osborn, Inseok Yoon, Zhiying You, D. J. Kim, M. Finger, Dillon Scott Fitzgerald, V. Canoa Roman, B. Mulilo, N. Cronin, K. Shoji, Susumu Sato, S. Kanda, W. Peng, P. W. Stankus, Ajit Kumar Mohanty, T. A. Shibata, V. Borisov, N. Grau, I. Tserruya, M. Jezghani, Iu. Mitrankov, Y. Imazu, V. Singh, A. Hodges, D. Isenhower, Kenichi Imai, T. Koblesky, T. Moon, S. P. Stoll, F. Wei, Hideki Hamagaki, W. Fan, K. Aoki, M. Vargyas, K. I. Hahn, A. Glenn, P. V. Radzevich, Eunja Kim, Jen-Chieh Peng, J. E. Frantz, D. Reynolds, Inkyu Park, Xiong Wang, M. Wysocki, Sándor Lökös, K. N. Barish, Alexander Milov, I. Nakagawa, Young-Ki Kim, T. Engelmore, O. Drapier, S. Zharko, D. P. Morrison, B. H. Kang, Tatsuya Chujo, M. L. Brooks, Y. L. Yamaguchi, R. Seto, X. He, Robert Vertesi, J. Koster, C. L. Woody, A. Veicht, A. Mwai, M. Sarsour, and A. Iordanova
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Physics ,Particle physics ,Meson ,010308 nuclear & particles physics ,0103 physical sciences ,Production (economics) ,010306 general physics ,01 natural sciences - Published
- 2020
- Full Text
- View/download PDF
8. Production of bb¯ at forward rapidity in p+p collisions at s=510 GeV
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Takafumi Niida, J. Huang, Prakhar Garg, A. Sen, B. Bannier, D. Lynch, M. Beaumier, Min-Hye Kim, K. S. Joo, T. Murakami, Yi Gu, R. S. Towell, Prashant Shukla, S. F. Pate, J. A. Key, D. Ivanishchev, V. Papavassiliou, C. E. Perezlara, S. I. Morrow, S. Sawada, A. Franz, J. Runchey, E. Joo, M. Stepanov, M. Potekhin, H. Nakagomi, T. Hoshino, D. Sharma, K. L. Smith, Norio Saito, A. Enokizono, R. A. Soltz, L. Zou, M. Grosse Perdekamp, Hari Guragain, J. Seele, V. Bumazhnov, D. Black, S. Esumi, J. Murata, D. Firak, M. I. Nagy, W. J. Metzger, D. Richford, Yoshifumi Ueda, J. H. Do, Minghui Liu, Kiyoshi Tanida, E. Kistenev, Sook Hyun Lee, H. Asano, D. Watanabe, J. T. Mitchell, F. Giordano, Atsushi Takahara, Alexander Milov, I. Nakagawa, Young-Ki Kim, Alexei Khanzadeev, L. Bichon, Anne Marie Sickles, E. Vznuzdaev, R. Seidl, B. Schaefer, V. S. Pantuev, D. Larionova, B. Azmoun, J. S. Bok, Vladislav Manko, D. Kawall, Kenneth Francis Read, T. A. Shibata, J. B. Choi, Maya Hachiya Shimomura, R. S. Hollis, T. Hachiya, K. A. Drees, Z. Sun, N. N. Ajitanand, G. D. N. Perera, S. Tarafdar, J. Sun, V. Babintsev, Dipak Kumar Mishra, D. H. Kim, D. P. Morrison, J. Rak, Y. I. Makdisi, Yanjun Wu, S. Park, A. J. Miller, P. Kline, A. Dion, Zvi Hirsh Citron, J. Klatsky, A. Sukhanov, K. Kurita, C. Gal, H. En'yo, N. Ramasubramanian, X. Jiang, I. Shein, Klaus Dehmelt, Julia Velkovska, C. L. Silva, A. Khatiwada, M. Virius, E. T. Atomssa, N. Feege, M. J. Leitch, Tatsuya Chujo, I. Tserruya, M. Jezghani, T. V. Moukhanova, Z. Ji, D. Yu Peressounko, K. Sedgwick, V. Singh, A. Hodges, M. Rosati, S. H. Lim, Tamás Csörgő, Mihael Makek, A. Deshpande, R. Lacey, A. Timilsina, M. J. Tannenbaum, A. Adare, Y. Riabov, B. M. Johnson, T. Koblesky, J. D. Orjuela Koop, Animesh Datta, T. Sumita, E. J. Desmond, A. Durum, J. Bryslawskyj, C. Y. Chi, M. Slunečka, P. L. McGaughey, C. H. Chen, Kenta Shigaki, M. Sarsour, F. Wei, D. Isenhower, B. K. Schmoll, C. O. Kim, T. Moon, A. Manion, B. Meredith, Xiao-yan Li, J. Hanks, Y. Watanabe, Hiroyuki Sako, A. S. Nyanin, R. Pak, I. Ravinovich, Balazs Ujvari, M. Leitgab, Rachid Nouicer, Y. J. Kwon, Jiangyong Jia, Y. Goto, A. Glenn, P. V. Radzevich, A. N. Zelenski, Kensuke Homma, S. Beckman, I. E. Yushmanov, S. Nelson, Senta Greene, Motoi Inaba, A. Meles, Eunja Kim, A. V. Kazantsev, M. Bai, M. S. Daugherity, C. P. Singh, D. Kleinjan, Mate Csanad, A. Iordanova, Alice Mignerey, T. Majoros, Jen-Chieh Peng, J. G. Rubin, A. Taranenko, S. Campbell, B. Fadem, E. O'Brien, S. Miyasaka, S. Y. Han, J. E. Frantz, C. L. Woody, A. Berdnikov, D. E. Fields, L. Ding, J. S. Kang, M. Kofarago, N. S. Bandara, Byung-Sik Hong, D. Reynolds, A. Bazilevsky, X. Sun, M. Nihashi, S. J. Jeon, J. D. Osborn, D. McGlinchey, Inseok Yoon, B. V. Jacak, D. Roach, Y. Zhai, A. Pun, Takao Sakaguchi, Vladimir Samsonov, Petr Gallus, H. J. Kim, G. David, I. J. Choi, B. Xia, L. Patel, Dennis Perepelitsa, Christine Nattrass, N. A. Lewis, Xiong Wang, R. J. Petti, Taku Gunji, T. Todoroki, M. Finger, Alexandre Lebedev, Y. Ikeda, A. D. Frawley, K. Ozawa, N. Novitzky, N. Riveli, R. P. Pisani, M. Towell, Brajesh K. Singh, T. C. Awes, M. Patel, I. V. Sourikova, Viktor Riabov, K. B. Lee, U. Acharya, Serpil Yalcin, S. Huang, J. Sziklai, M. McCumber, S. P. Sorensen, E. J. Mannel, M. Wysocki, T. Rinn, A. Taketani, C. P. Wong, J. G. Lajoie, M. Alfred, S. Whitaker, Jennifer E. Perry, M. Connors, W. A. Zajc, L. Xue, R. Akimoto, R. Esha, A. Denisov, Yuki Watanabe, C. Pinkenburg, S. D. Rolnick, M. Kurosawa, Sergey Fokin, D. J. Kim, J. H. Kang, J. S. Haggerty, J. L. Nagle, Dillon Scott Fitzgerald, V. Canoa Roman, R. Belmont, Susumu Sato, Y. Imazu, Kenichi Imai, Sándor Lökös, K. N. Barish, S. Zharko, Hideki Hamagaki, W. Fan, M. Vargyas, K. I. Hahn, P. Montuenga, V. Borisov, N. Grau, M. L. Brooks, Iu. Mitrankov, Y. L. Yamaguchi, B. Mulilo, M. Tomášek, W. Peng, P. W. Stankus, A. Sexton, R. Seto, X. He, Y. Aramaki, J. Koster, A. Mwai, D. Kotov, D. S. Jumper, S. P. Stoll, D. Jouan, S. Wolin, N. Apadula, A. Drees, S. Bathe, M. Chiu, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, K. DeBlasio, R. Pinson, Martin Purschke, C. A. Aidala, Pawan Kumar Netrakanti, V. Khachatryan, S. Hasegawa, Henner Buesching, I. Younus, Agneta Oskarsson, D. Kincses, John Matthew Durham, M. Larionova, Y. Berdnikov, Y. Akiba, C. McKinney, S. Nagamiya, Vaclav Vrba, S. Mizuno, H. W. Van Hecke, B. Blankenship, K. Kihara, Qiao Xu, D. Silvermyr, A. Yanovich, Z. Rowan, M. Mendoza, H. Ge, K. Nakano, W. E. Sondheim, K. Boyle, John Hill, H. A. Torii, B. Kurgyis, Toru Sugitate, and P. Sett
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Quantum chromodynamics ,Physics ,Particle physics ,Muon ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Order (ring theory) ,01 natural sciences ,Gluon ,0103 physical sciences ,High Energy Physics::Experiment ,Production (computer science) ,Rapidity ,PHENIX detector ,Nuclear Experiment ,010306 general physics ,Relativistic Heavy Ion Collider - Abstract
The cross section of bottom quark-antiquark ($b\bar{b}$) production in $p$+$p$ collisions at $\sqrt{s}=510$ GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance ($1.2 1$ GeV/$c$, and dimuon mass of 5--10 GeV/$c^2$. The extrapolated total cross section at this energy for $b\bar{b}$ production is $13.1 \pm 0.6~(\mbox{stat}) \pm 1.5~(\mbox{syst}) \pm 2.7~(\mbox{global})~\mu$b. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from $b\bar{b}$ decays and their $p_T$ distributions are compared to distributions generated using {\sc ps pythia 6}, which includes next-to-leading order processes. The azimuthal correlations and pair $p_T$ distribution are not very well described by {\sc pythia} calculations, but are still consistent within uncertainties. Flavor creation and flavor excitation subprocesses are favored over gluon splitting.
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- 2020
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9. Polarization and cross section of midrapidity J/ψ production in p+p collisions at s=510 GeV
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A. J. Miller, Martin Purschke, C. A. Aidala, Y. Imazu, Y. J. Kwon, J. Seele, A. Sukhanov, K. Kurita, T. Murakami, Yi Gu, S. I. Morrow, S. Sawada, J. Runchey, M. Potekhin, M. S. Daugherity, C. P. Singh, N. A. Lewis, R. J. Petti, S. Mizuno, Pawan Kumar Netrakanti, Kenichi Imai, J. S. Kang, Y. Zhai, V. Khachatryan, Dillon Scott Fitzgerald, V. Canoa Roman, C. O. Kim, R. Pak, A. Enokizono, D. Kotov, D. S. Jumper, S. H. Lim, J. Sziklai, Kiyoshi Tanida, M. Slunečka, B. Azmoun, Susumu Sato, Atsushi Takahara, K. A. Drees, H. W. Van Hecke, P. L. McGaughey, J. Klatsky, Jen-Chieh Peng, J. G. Rubin, Hideki Hamagaki, W. Fan, M. Vargyas, H. Nakagomi, T. Hoshino, B. Blankenship, E. Joo, M. Stepanov, K. I. Hahn, Hari Guragain, E. Kistenev, J. H. Kang, J. E. Frantz, J. S. Haggerty, Sook Hyun Lee, P. Kline, A. Dion, Z. Rowan, M. Mendoza, H. Asano, Maya Hachiya Shimomura, R. S. Hollis, B. Ujvari, B. Mulilo, J. G. Lajoie, I. J. Choi, D. Reynolds, B. Xia, S. Beckman, Dennis Perepelitsa, Y. I. Makdisi, M. Beaumier, M. Towell, K. S. Joo, D. Jouan, M. Tomášek, H. Ge, D. Richford, Y. Riabov, J. Bryslawskyj, K. Nakano, W. Peng, N. N. Ajitanand, P. W. Stankus, Kenta Shigaki, M. J. Tannenbaum, W. E. Sondheim, R. S. Towell, G. D. N. Perera, Yoshifumi Ueda, J. H. Do, J. Sun, Viktor Riabov, B. K. Schmoll, A. Taketani, V. Bumazhnov, D. Black, Xiong Wang, S. Esumi, K. Boyle, N. Feege, X. He, Animesh Datta, T. Sumita, C. Y. Chi, A. S. Nyanin, A. Durum, B. M. Johnson, Dong Jo Kim, Rachid Nouicer, A. N. Zelenski, Alice Mignerey, A. Taranenko, S. Miyasaka, A. Franz, S. J. Jeon, Brajesh K. Singh, X. Sun, A. Deshpande, Y. Aramaki, A. Meles, Takao Sakaguchi, D. E. Fields, T. Majoros, S. P. Sorensen, B. V. Jacak, A. D. Frawley, N. Riveli, K. B. Lee, S. Huang, Wesley James Metzger, J. Koster, M. Kurosawa, C. L. Silva, R. Belmont, Serpil Yalcin, C. P. Wong, S. Wolin, M. Wysocki, M. Alfred, S. Whitaker, M. Connors, W. A. Zajc, L. Xue, D. Sharma, A. Denisov, Yuki Watanabe, M. I. Nagy, Jennifer E. Perry, I. Tserruya, I. Ravinovich, Sergey Fokin, D. Watanabe, S. Hasegawa, Y. Watanabe, Anne Marie Sickles, M. Jezghani, D. Lynch, B. Schaefer, E. Vznuzdaev, Y. Ikeda, J. S. Bok, E. J. Mannel, T. Rinn, M. Bai, T. A. Shibata, B. Meredith, V. Singh, A. Hodges, C. L. Woody, Jan Rak, N. S. Bandara, R. Lacey, A. Mwai, A. Adare, Vladimir Samsonov, Henner Buesching, Christine Nattrass, T. Todoroki, J. D. Osborn, D. Isenhower, T. Moon, T. Koblesky, Inseok Yoon, John Hill, H. A. Torii, B. Kurgyis, S. P. Stoll, F. Wei, E. J. Desmond, Taku Gunji, Toru Sugitate, S. Nelson, J. L. Nagle, M. Patel, M. Finger, A. Berdnikov, R. Esha, S. D. Rolnick, L. Ding, M. Kofarago, D. Roach, A. Pun, K. Kihara, Qiao Xu, M. Virius, E. T. Atomssa, Petr Gallus, A. Glenn, P. V. Radzevich, D. Silvermyr, J. T. Mitchell, R. Seidl, Vladislav Manko, I. Younus, Eunja Kim, A. Yanovich, K. Ozawa, I. V. Sourikova, J. D. Orjuela Koop, Agneta Oskarsson, A. Timilsina, C. H. Chen, D. Kincses, John Matthew Durham, Kensuke Homma, M. Larionova, Y. Berdnikov, Y. Akiba, A. Manion, C. McKinney, S. Nagamiya, Vaclav Vrba, L. Zou, K. L. Smith, Y. L. Yamaguchi, Alexander Milov, Minghui Liu, I. Nakagawa, Young-Ki Kim, Prashant Shukla, Kenneth Francis Read, S. F. Pate, D. McGlinchey, J. A. Key, D. Ivanishchev, V. Papavassiliou, C. E. Perezlara, H. J. Kim, D. P. Morrison, A. Sexton, P. Sett, Takafumi Niida, J. Huang, Prakhar Garg, B. Bannier, R. Seto, A. V. Kazantsev, Yanjun Wu, Tatsuya Chujo, I. E. Yushmanov, C. Gal, Sándor Lökös, K. N. Barish, S. Zharko, Min-Hye Kim, Klaus Dehmelt, Senta Greene, Julia Velkovska, A. Khatiwada, D. Kawall, M. Rosati, Tamás Csörgő, M. L. Brooks, S. Park, J. Murata, Zvi Hirsh Citron, I. Shein, G. David, L. Patel, B. Fadem, E. O'Brien, K. Sedgwick, T. C. Awes, Mihael Makek, Jiangyong Jia, Y. Goto, D. Kleinjan, S. Campbell, D. Firak, R. A. Soltz, M. Grosse Perdekamp, F. Giordano, Alexei Khanzadeev, T. Hachiya, L. Bichon, J. B. Choi, Z. Ji, D. Yu Peressounko, Dipak Kumar Mishra, D. H. Kim, R. Akimoto, N. Apadula, C. Pinkenburg, A. Drees, T. V. Moukhanova, Z. Sun, S. Tarafdar, M. Leitgab, Motoi Inaba, A. Sen, V. S. Pantuev, S. Bathe, M. Chiu, M. Sarsour, C. A. Ogilvie, Mate Csanad, A. Iordanova, S. Y. Han, T. K. Hemmick, Yasuo Miake, K. DeBlasio, M. Nihashi, R. Pinson, Byung-Sik Hong, A. Bazilevsky, P. Montuenga, N. Novitzky, R. P. Pisani, V. Borisov, N. Grau, U. Acharya, M. McCumber, Iu. Mitrankov, H. En'yo, Alexandre Lebedev, M. J. Leitch, N. Ramasubramanian, X. Jiang, Xiao-yan Li, J. Hanks, Hiroyuki Sako, Norio Saito, D. Larionova, and V. Babintsev
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Quantum chromodynamics ,Physics ,Range (particle radiation) ,010308 nuclear & particles physics ,Nuclear Theory ,Polarization (waves) ,01 natural sciences ,7. Clean energy ,Nuclear physics ,Cross section (physics) ,0103 physical sciences ,Transverse momentum ,Rapidity ,Nuclear Experiment ,010306 general physics ,Spin-½ - Abstract
The PHENIX experiment has measured the spin alignment for inclusive J/ψ→e+e- decays in proton-proton collisions at s=510 GeV at midrapidity. The angular distributions have been measured in three different polarization frames, and the three decay angular coefficients have been extracted in a full two-dimensional analysis. Previously, PHENIX saw large longitudinal net polarization at forward rapidity at the same collision energy. This analysis at midrapidity, complementary to the previous PHENIX results, sees no sizable polarization in the measured transverse momentum range of 0.0
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- 2020
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10. Measurement of J/ψ at forward and backward rapidity in p+p , p+Al , p+Au , and He3+Au collisions at sNN=200 GeV
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J. B. Choi, D. Fitzgerald, Dipak Kumar Mishra, S. Karthas, D. Kotov, C. L. Woody, A. Berdnikov, A. Sukhanov, K. Kurita, Y. H. Leung, T. V. Moukhanova, D. S. Jumper, L. Zou, N. S. Bandara, M. Stepanov, Vladimir Samsonov, Christine Nattrass, R. Pak, M. Csanad, S. P. Stoll, T. Todoroki, R. Kitamura, D. Jouan, Petr Gallus, Min-Hye Kim, Hari Guragain, S. H. Lee, C. Y. Scarlett, P. Sett, T. Nagashima, K. Ozawa, I. V. Sourikova, Minghui Liu, S. Hasegawa, H. Asano, Z. Rowan, Kenneth Francis Read, J. L. Nagle, S. Bathe, M. Chiu, C. A. Ogilvie, S. Nelson, T. K. Hemmick, A. Sen, B. J. Ramson, V. S. Pantuev, K. DeBlasio, R. Pinson, Keiji Nagai, M. Mendoza, N. Apadula, A. Drees, S. Suzuki, A. Deshpande, H. Yamamoto, N. Feege, E. A. Gamez, R. S. Towell, D. Lynch, A. Meles, Takafumi Niida, J. Huang, H. Ge, B. Azmoun, K. Nakano, A. Pun, B. Kimelman, B. M. Johnson, Dmitry Blau, V. Bumazhnov, A. V. Kazantsev, W. E. Sondheim, K. Hashimoto, Prakhar Garg, K. Boyle, D. V. Perepelitsa, Xingguo Li, B. Komkov, Alice Mignerey, B. Bannier, Y. Watanabe, D. E. Fields, E. J. Desmond, S. P. Sorensen, S. Miyasaka, H. En'yo, T. Shioya, Norio Saito, M. J. Leitch, H. Yu, Y. Fukuda, B. V. Jacak, A. Enokizono, D. Dixit, Motoi Inaba, Animesh Datta, T. Sumita, C. Y. Chi, Prashant Shukla, John Hill, B. Sahlmueller, B. Kurgyis, S. F. Pate, Toru Sugitate, G. David, Kiyoshi Tanida, Jan Rak, S. H. Lim, X. Sun, Agneta Oskarsson, Takao Sakaguchi, A. Taranenko, R. Lacey, Brajesh K. Singh, G. J. Ottino, M. Potekhin, J. G. Lajoie, M. Alfred, Y. Riabov, E. Kistenev, D. Kincses, John Matthew Durham, V. R. Loggins, J. T. Mitchell, J. Bryslawskyj, Kenta Shigaki, J. A. Key, N. Hotvedt, R. Seidl, Michael William Phipps, S. Lee, Jennifer E. Perry, M. S. Daugherity, R. Cervantes, A. Iordanova, Y. Berdnikov, S. Y. Han, Y. Akiba, S. Ishimaru, V. Babintsev, C. McKinney, C. P. Singh, Vladislav Manko, Viktor Riabov, Serpil Yalcin, A. Adare, Balazs Ujvari, Y. J. Kwon, A. D. Frawley, A. S. Nyanin, R. Nishitani, M. Slunečka, M. Snowball, H. Nakagomi, T. Hoshino, N. A. Lewis, Rachid Nouicer, A. N. Zelenski, Vaclav Vrba, K. Hill, R. J. Petti, D. Ivanishchev, J. Sun, I. E. Yushmanov, A. S. White, V. Papavassiliou, C. E. Perezlara, P. L. McGaughey, Z. Wang, Byung-Sik Hong, T. Murakami, Chong Kim, A. Bazilevsky, N. N. Ajitanand, D. E. Mihalik, S. Huang, J. Sziklai, C. P. Wong, D. Richford, A. S. Safonov, M. Connors, I. J. Choi, B. Xia, W. A. Zajc, Wesley James Metzger, D. McGlinchey, S. Beckman, Yoshifumi Ueda, J. H. Do, G. D. N. Perera, Qiao Xu, ShinIchi Esumi, D. Silvermyr, L. Xue, P. Kline, A. Dion, M. Kurosawa, Alexandre Lebedev, C. L. Towell, N. Vukman, N. Novitzky, A. Denisov, Yuki Watanabe, Y. Zhai, J. H. Yoo, A. Timilsina, R. Belmont, D. Kawall, Shunji Nishimura, S. I. Morrow, K. A. Drees, A. Durum, R. P. Pisani, H. F. Hamilton, Maya Hachiya Shimomura, R. S. Hollis, S. Mizuno, Y. I. Makdisi, A. Franz, J. Runchey, A. Yanovich, N. Ramasubramanian, H. W. Van Hecke, U. Acharya, M. McCumber, Sergey Fokin, X. Jiang, J. Murata, Zvi Hirsh Citron, Kensuke Homma, I. Shein, C. L. Silva, J. Klatsky, M. Beaumier, M. J. Tannenbaum, K. Sedgwick, T. Novák, Mihael Makek, J. Hanks, Hiroyuki Sako, B. K. Schmoll, T. Majoros, D. Sharma, Anne Marie Sickles, B. Schaefer, J. S. Bok, Martin Purschke, C. A. Aidala, M. J. Skoby, Pawan Kumar Netrakanti, V. Andrieux, V. Khachatryan, M. I. Nagy, D. Kapukchyan, G. Mitsuka, A. Taketani, K. Lovasz, J. H. Kang, M. Rosati, J. S. Haggerty, Tamás Csörgő, S. Kudo, Jiangyong Jia, Y. Goto, D. Kleinjan, S. Campbell, K. L. Smith, Senta Greene, M. Virius, Yanjun Wu, E. J. Mannel, T. Rinn, C. Gal, B. Fadem, E. O'Brien, Klaus Dehmelt, Julia Velkovska, A. Khatiwada, R. A. Soltz, M. Grosse Perdekamp, F. Giordano, J. D. Orjuela Koop, T. Hachiya, S. K. Park, C. H. Chen, C. Pinkenburg, A. Manion, I. Ravinovich, Z. Ji, D. Yu Peressounko, G. Tarnai, Z. Sun, M. Bai, S. Tarafdar, J. D. Osborn, Inseok Yoon, Kei Nagashima, M. Finger, V. Canoa Roman, G. W. Kim, Raphael Noel Tieulent, Susumu Sato, Jong-Min Park, Taku Gunji, B. Mulilo, M. Patel, N. Cronin, M. Tomášek, S. Kanda, W. Peng, P. W. Stankus, S. Zhou, R. Esha, P. Montuenga, S. D. Rolnick, N. Grau, Iu. Mitrankov, Ajit Kumar Mohanty, T. A. Shibata, Kenichi Imai, T. O. S. Haseler, D. Isenhower, T. Moon, P. B. Diss, Hideki Hamagaki, W. Fan, K. I. Hahn, Alexander Milov, I. Nakagawa, D. P. Morrison, M. Boer, Sándor Lökös, K. N. Barish, Tatsuya Chujo, I. Tserruya, M. Jezghani, V. Singh, A. Hodges, S. Zharko, T. Koblesky, M. Sarsour, F. Wei, A. Glenn, P. V. Radzevich, Eunja Kim, M. L. Brooks, Jen-Chieh Peng, J. G. Rubin, X. He, J. E. Frantz, D. Reynolds, Xiong Wang, Dong Jo Kim, M. Wysocki, A. Mwai, Y. L. Yamaguchi, C. Xu, A. Sexton, R. Seto, T. W. Danley, and Alexei Khanzadeev
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Physics ,010308 nuclear & particles physics ,Projectile ,Nuclear Theory ,Observable ,Nuclear matter ,Collision ,7. Clean energy ,01 natural sciences ,Nuclear physics ,Yield (chemistry) ,0103 physical sciences ,Quark–gluon plasma ,High Energy Physics::Experiment ,Rapidity ,Impact parameter ,Nuclear Experiment ,010306 general physics - Abstract
Charmonium is a valuable probe in heavy-ion collisions to study the properties of the quark gluon plasma, and is also an interesting probe in small collision systems to study cold nuclear matter effects, which are also present in large collision systems. With the recent observations of collective behavior of produced particles in small system collisions, measurements of the modification of charmonium in small systems have become increasingly relevant. We present the results of J/ψ measurements at forward and backward rapidity in various small collision systems, p+p, p+Al, p+Au, and He3+Au, at sNN=200 GeV. The results are presented in the form of the observable RAB, the nuclear modification factor, a measure of the ratio of the J/ψ invariant yield compared to the scaled yield in p+p collisions. We examine the rapidity, transverse momentum, and collision centrality dependence of nuclear effects on J/ψ production with different projectile sizes p and He3, and different target sizes Al and Au. The modification is found to be strongly dependent on the target size, but to be very similar for p+Au and He3+Au. However, for 0%–20% central collisions at backward rapidity, the modification factor for He3+Au is found to be smaller than that for p+Au, with a mean fit to the ratio of 0.89±0.03(stat)±0.08(syst), possibly indicating final state effects due to the larger projectile size.
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- 2020
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11. Nuclear-modification factor of charged hadrons at forward and backward rapidity in p + Al and p + Au collisions at sNN=200GeV
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Alice Mignerey, T. Hoshino, S. Miyasaka, Martin Purschke, C. A. Aidala, I. Tserruya, W. J. Metzger, D. Richford, A. S. Safonov, Motoi Inaba, Takao Sakaguchi, M. Jezghani, V. Singh, A. Hodges, N. Apadula, A. Drees, S. Ishimaru, A. D. Frawley, R. A. Soltz, P. Montuenga, N. Grau, A. Sen, S. Huang, V. S. Pantuev, Iu. Mitrankov, M. Snowball, H. F. Hamilton, T. Koblesky, Yoshifumi Ueda, J. H. Do, M. Sarsour, C. L. Towell, N. Vukman, Maya Hachiya Shimomura, R. S. Hollis, Mate Csanad, A. Iordanova, S. Y. Han, M. Slunečka, P. L. McGaughey, M. J. Skoby, M. Grosse Perdekamp, F. Giordano, T. Hachiya, I. J. Choi, Y. I. Makdisi, Min-Hye Kim, S. H. Lee, C. Y. Scarlett, S. Karthas, D. Kawall, D. Kotov, John Hill, D. McGlinchey, V. Andrieux, V. Khachatryan, S. Park, H. En'yo, B. Kurgyis, N. Novitzky, M. J. Tannenbaum, D. S. Jumper, Toru Sugitate, B. K. Schmoll, P. V. Radzevich, Z. Ji, A. V. Kazantsev, Arkadiy Taranenko, S. P. Stoll, K. A. Drees, R. P. Pisani, D. Yu Peressounko, M. J. Leitch, Dennis Perepelitsa, I. Shein, M. McCumber, Eunja Kim, J. Murata, Alexander Milov, K. Sedgwick, M. Beaumier, R. Nishitani, S. Nelson, Mihael Makek, A. Deshpande, S. Suzuki, H. Yamamoto, Z. Wang, Y. Fukuda, Alexei Khanzadeev, I. Nakagawa, Y. J. Kwon, K. L. Smith, G. David, J. Klatsky, Takafumi Niida, J. Huang, J. B. Choi, Viktor Riabov, Kensuke Homma, A. Khatiwada, Sándor Lökös, K. N. Barish, A. Enokizono, S. Esumi, D. Jouan, Y. H. Leung, Kiyoshi Tanida, Senta Greene, Kyoichiro Ozawa, Dipak Kumar Mishra, Qiao Xu, D. Silvermyr, D. P. Morrison, Y. Watanabe, E. Kistenev, S. Bathe, M. Chiu, Prakhar Garg, T. Murakami, T. Majoros, Y. Riabov, J. Bryslawskyj, Kenta Shigaki, R. Cervantes, L. Zou, V. Babintsev, Minghui Liu, Byung-Sik Hong, Chong Kim, A. Bazilevsky, S. H. Lim, C. A. Ogilvie, T. K. Hemmick, S. Zharko, D. Sharma, B. Fadem, E. O'Brien, B. Azmoun, Alexandre Lebedev, A. Yanovich, Kenneth Francis Read, A. Pun, Anne Marie Sickles, A. S. Nyanin, J. Sun, S. I. Morrow, D. Lynch, Serpil Yalcin, B. Schaefer, S. Mizuno, Rachid Nouicer, A. N. Zelenski, Y. Zhai, Z. Rowan, A. Franz, J. Runchey, K. DeBlasio, C. Gal, J. S. Bok, M. Mendoza, Dmitry Blau, J. E. Frantz, Klaus Dehmelt, D. Reynolds, Julia Velkovska, C. L. Silva, M. Rosati, C. P. Wong, Prashant Shukla, P. Kline, Keiji Nagai, A. Dion, X. Jiang, Tamás Csörgő, Xiong Wang, S. F. Pate, H. W. Van Hecke, Zvi Hirsh Citron, M. Connors, W. A. Zajc, L. Xue, E. J. Desmond, H. Ge, K. Nakano, S. Kudo, S. Hasegawa, S. P. Sorensen, A. Denisov, W. E. Sondheim, M. L. Brooks, Y. Goto, Xiao-yan Li, D. Ivanishchev, J. Hanks, V. Papavassiliou, Sergey Fokin, C. E. Perezlara, Hiroyuki Sako, X. He, V. R. Loggins, J. T. Mitchell, S. Campbell, N. Hotvedt, T. Shioya, J. G. Lajoie, R. Seidl, Vladislav Manko, C. L. Woody, M. Alfred, A. Berdnikov, Michael William Phipps, S. Lee, Jennifer E. Perry, Balazs Ujvari, Petr Gallus, T. Nagashima, D. Dixit, I. E. Yushmanov, Y. L. Yamaguchi, I. V. Sourikova, C. Xu, A. Timilsina, Agneta Oskarsson, A. Sexton, Kenichi Imai, D. Kincses, John Matthew Durham, A. Sukhanov, K. Kurita, T. O. S. Haseler, R. Seto, T. W. Danley, Y. Berdnikov, Y. Akiba, C. McKinney, Hideki Hamagaki, W. Fan, K. I. Hahn, Vaclav Vrba, K. Hill, N. Cronin, Jong-Min Park, Taku Gunji, M. Tomášek, W. Peng, P. W. Stankus, M. Patel, J. D. Osborn, Inseok Yoon, M. Finger, S. D. Rolnick, G. Mitsuka, M. I. Nagy, D. Kapukchyan, T. A. Shibata, G. D. N. Perera, D. Isenhower, Tamas Novak, T. Moon, A. Durum, D. E. Fields, B. V. Jacak, Hari Guragain, Kei Nagashima, V. Canoa Roman, Raphael Noel Tieulent, Susumu Sato, K. Lovasz, H. Asano, N. Feege, E. A. Gamez, M. Virius, J. D. Orjuela Koop, Brajesh K. Singh, G. J. Ottino, R. S. Towell, J. H. Kang, J. S. Haggerty, H. Yu, T. Sumita, C. Y. Chi, J. H. Yoo, R. Belmont, E. J. Mannel, T. Rinn, M. S. Daugherity, C. P. Singh, R. Petti, B. M. Johnson, N. A. Lewis, J. Sziklai, C. Pinkenburg, N. S. Bandara, Vladimir Samsonov, Christine Nattrass, G. Tarnai, T. Todoroki, Z. Sun, J. L. Nagle, S. Tarafdar, and V. Bumazhnov
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Physics ,010308 nuclear & particles physics ,Hadron ,Parton ,Modification factor ,01 natural sciences ,Nuclear physics ,Distribution function ,Pseudorapidity ,0103 physical sciences ,Rapidity ,Multiplicity (chemistry) ,Nuclear Experiment ,010306 general physics ,Nucleon - Abstract
The PHENIX experiment has studied nuclear effects in p+Al and p+Au collisions at sNN=200GeV on charged hadron production at forward rapidity (1.4
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- 2020
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12. Design Studies of High-Resolution Readout Planes Using Zigzags With GEM Detectors
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A. Kiselev, Martin Purschke, Klaus Dehmelt, M. Kebbiri, Prakhar Garg, T. K. Hemmick, S. Aune, M. Revolle, A. Deshpande, C. L. Woody, H. Pereira-Da-Costa, M. Vandenbroucke, B. Azmoun, W. Fan, C. E. Perezlara, I. Mandjavidze, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
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micromegas ,Nuclear and High Energy Physics ,Chemical lasers ,Silicon ,micropattern gaseous detector (MPGD) ,Materials science ,Physics::Instrumentation and Detectors ,Geometry ,zigzag readout ,01 natural sciences ,Charge sharing ,Printed circuit board ,Optics ,0103 physical sciences ,Turn (geometry) ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Electrical and Electronic Engineering ,Electrodes ,Microscopy ,010308 nuclear & particles physics ,business.industry ,gas electron multiplier (GEM) ,high resolution ,Detector ,Detectors ,Isotropic etching ,Laser ablation ,Anode ,μRWELL ,Nuclear Energy and Engineering ,Zigzag ,Gas electron multiplier ,business - Abstract
International audience; We have developed highly interleaved zigzag-shaped electrodes for collecting charge on the readout plane of various micropattern gaseous detectors (MPGDs), including gas electron multiplier (GEM) and micromega detectors. An optimized zigzag pad (or strip) anode can greatly enhance charge sharing among neighboring pads compared to traditional straight strip or rectangular pad designs and as a result can deliver excellent position resolution with minimal channel count, while exhibiting a virtually uniform response across the detector. We have systematically studied the effects of varying the parameters that define the zigzag geometry using simulations and have measured several printed circuit boards (PCBs) comprising a range of zigzag designs. Recently, we have employed laser ablation to generate zigzag patterns with pad-to-pad gaps smaller than 1 mil (or 25 $\mu \text{m}$ ). Reducing the gap well below the 3-mil limit imposed by traditional chemical etching has allowed the production of zigzag electrodes with unprecedentedly small feature sizes. In turn, laser-etched zigzag PCBs were shown to exhibit markedly improved performance over earlier generation PCBs, with position resolutions below 50 $\mu \text{m}$ for a 2-mm pitch. This article will explore in detail the dependence of the position resolution on the structural parameters of a zigzag-shaped anode, specifically for the case of a quadruple GEM detector.
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- 2020
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13. Study of light backgrounds from relativistic electrons in air light-guides
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S. Park, Jie Pan, B. Gläser, Kathrin Imai, Yuxiang Zhao, S. Rahman, S. Riordan, T. Kutz, F. E. Maas, Klaus Dehmelt, Michael Gericke, D. McNulty, Paul Souder, P. Wang, Dominik Becker, C. Clarke, A. Deshpande, K. S. Kumar, S. Baunack, and B. Wellman
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Nuclear and High Energy Physics ,Photomultiplier ,Physics - Instrumentation and Detectors ,Physics::Instrumentation and Detectors ,Cherenkov detector ,FOS: Physical sciences ,Electron ,01 natural sciences ,High Energy Physics - Experiment ,law.invention ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,Optics ,law ,0103 physical sciences ,Nuclear Experiment (nucl-ex) ,Møller scattering ,010306 general physics ,Nuclear Experiment ,Instrumentation ,Cherenkov radiation ,Physics ,Scintillation ,010308 nuclear & particles physics ,business.industry ,Scattering ,Instrumentation and Detectors (physics.ins-det) ,Cathode ray ,business - Abstract
The MOLLER experiment proposed at the Thomas Jefferson National Accelerator Facility plans a precision low energy determination of the weak mixing angle via the measurement of the parity-violating asymmetry in the scattering of high energy longitudinally polarized electrons from electrons bound in a liquid hydrogen target (M{\o}ller scattering). A relative measure of the scattering rate is planned to be obtained by intercepting the M{\o}ller scattered electrons with a circular array of thin fused silica tiles attached to air light guides, which facilitate the transport of Cherenkov photons generated within the tiles to photomultiplier tubes (PMTs). The scattered flux will also pass through the light guides of downstream tiles, generating additional Cherenkov as well as scintillation light and is a potential background. In order to estimate the rate of these backgrounds, a gas-filled tube detector was designed and deployed in an electron beam at the MAMI facility at Johannes Gutenberg University, Mainz, Germany. Described in this paper is the design of a detector to measure separately the scintillation and Cherenkov responses of gas mixtures from relativistic electrons, the results of studies of several gas mixtures with comparisons to simulations, and conclusions about the implications for the design of the MOLLER detector apparatus., Comment: Published in NIM.A
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- 2018
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14. A magnetic field cloak for charged particle beams
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Sean Jeffas, Klaus Dehmelt, J. LaBounty, A. Adhyatman, T. LaByer, A. Oliveira, N. Feege, T. Krahulik, T. K. Hemmick, A. Deshpande, Benjamin Coe, R. Cervantes, S. Mahmud, G. Arrowsmith-Kron, K. Sharma, K.G. Capobianco-Hogan, A. Quadri, A. Tishelman-Charny, and R. Sekelsky
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Accelerator Physics (physics.acc-ph) ,010302 applied physics ,Physics ,Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,Condensed matter physics ,Cloak ,FOS: Physical sciences ,Particle accelerator ,Instrumentation and Detectors (physics.ins-det) ,Electron ,01 natural sciences ,Charged particle ,law.invention ,Magnetic field ,Dipole ,law ,Magnet ,0103 physical sciences ,Electromagnetic shielding ,Physics - Accelerator Physics ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Nuclear Experiment ,Instrumentation - Abstract
Shielding charged particle beams from transverse magnetic fields is a common challenge for particle accelerators and experiments. We demonstrate that a magnetic field cloak is a viable solution. It allows for the use of dipole magnets in the forward regions of experiments at an Electron Ion Collider (EIC) and other facilities without interfering with the incoming beams. The dipoles can improve the momentum measurements of charged final state particles at angles close to the beam line and therefore increase the physics reach of these experiments. In contrast to other magnetic shielding options (such as active coils), a cloak requires no external powering. We discuss the design parameters, fabrication, and limitations of a magnetic field cloak and demonstrate that cylinders made from 45 layers of YBCO high-temperature superconductor, combined with a ferromagnetic shell made from epoxy and stainless steel powder, shield more than 99% of a transverse magnetic field of up to 0.45 T (95% shielding at 0.5 T) at liquid nitrogen temperature. The ferromagnetic shell reduces field distortions caused by the superconductor alone by 90% at 0.45 T.
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- 2018
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15. Study of a Passive Gating Grid for Ion Back Flow Suppression
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Vladislav Zakharov, Prakhar Garg, Klaus Dehmelt, and Thomas Hemmick
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Physics ,History ,Physics - Instrumentation and Detectors ,business.industry ,Detector ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,Electron ,Gating ,Space charge ,Noise (electronics) ,Signal ,Computer Science Applications ,Education ,Optics ,Electric field ,Electronics ,Nuclear Experiment (nucl-ex) ,business ,Nuclear Experiment - Abstract
Space Charge (SC) distortions are some of the main issues for high-resolution Time Projection Chambers (TPC). The two main SC sources are those from primary ionizations and those that result from amplification stages. The gain stages are required to increase the electron signal above electronics noise levels, but this inevitably creates extra ions. These ions can enter the drift region and distort the electric field, and thus lower the detector performance. We will present a brief motivation for our Ion Back Flow (IBF) studies along with explanations of existing techniques and our simulation results to reduce IBF. We propose several mesh structures along with static bi-polar gating. Further, we discuss position distortions in electron trajectories due to a static bi-polar grid and use these distortions to compensate for non-linear responses of our Zig-Zag pad readout., 7 pages, 8 figures, Submitted to Journal of Physics Conference Series
- Published
- 2019
16. The sPHENIX TPC Project
- Author
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Klaus Dehmelt
- Subjects
Physics ,Pixel ,Physics::Instrumentation and Detectors ,business.industry ,Detector ,MicroMegas detector ,Tracking system ,Jet (particle physics) ,Tracking (particle physics) ,Azimuth ,Nuclear physics ,Upgrade ,High Energy Physics::Experiment ,Nuclear Experiment ,business - Abstract
A state-of-the-art detector, called sPHENIX, is being planned at RHIC for measuring jets, jet correlations and upsilons to study the microscopic nature of the Quark-Gluon Plasma. Precision vertexing and tracking, as well as calorimetry, will be provided over full azimuth and pseudorapidities of |$\eta$| < 1.1. The data will be continuously recorded making use of the 15 kHz RHIC collision rate in the region of interest. A high resolution and low mass tracking system for reconstructing the three upsilon states is needed. The tracking system comprises silicon pixel and strip detectors and a compact TPC. The TPC at the present planning stage will be using quadruple-GEM detectors as a readout, following the path of the ALICE-TPC upgrade, with a modified Neon-based gas mixture. The main tasks of this configuration are the achievement of sufficient momentum resolution and combating ion back-flow. The motivation and the design of the technology choices will be presented along with the present status of the project. Furthermore, alternative readout structures, like hybrids of MicroMegas and GEMs will be discussed.
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- 2019
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17. Measurement of two-particle correlations with respect to second- and third-order event planes in Au + Au collisions at sNN=200 GeV
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Jiro Murata, Norbert Novitzky, Mate Csanad, Toru Sugitate, Yaroslav Berdnikov, Michael Tannenbaum, Vladimir Khachatryan, Zvi Citron, Pavel Radzevich, Yue Shi Lai, Tomáš Liška, Christine Nattrass, J. Ali Hanks, Sandor Lokos, Dmitry Kotov, Klaus Dehmelt, Victor Riabov, Andrey Yanovich, Frank Ellinghaus, Susumu Oda, Kyoichiro Ozawa, Prakhar Garg, Takahito Todoroki, Paul Constantin, Sergey Fokin, Manabu Togawa, Xuan Li, Shinya Sawada, Andrew Glenn, Deepali Sharma, Joe Osborn, Sourav Tarafdar, Jin Huang, Michael Heffner, Aleksandr Berdnikov, Bhartendu K. Singh, Kiyoshi Tanida, and Kenta Shigaki
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Physics ,010308 nuclear & particles physics ,media_common.quotation_subject ,Hadron ,Root (chord) ,01 natural sciences ,Asymmetry ,Nuclear physics ,Third order ,0103 physical sciences ,Quark–gluon plasma ,Particle ,Nuclear Experiment ,010306 general physics ,Anisotropy ,Event (particle physics) ,media_common - Abstract
We present measurements of azimuthal correlations of charged hadron pairs in sNN=200 GeV Au+Au collisions for the trigger and associated particle transverse-momentum ranges of 14GeV/c) correlations is suppressed compared with that of correlations measured in p+p collisions. At the lowest associated particle pT(0.5
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- 2019
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18. Passive Gating Grid for Ion Back Flow Suppression in High Luminosity Collider Experiments
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Klaus Dehmelt, Vladislav Zakharov, T. K. Hemmick, E. Shulga, Prakhar Garg, and Alexander Milov
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Physics ,Physics - Instrumentation and Detectors ,Luminosity (scattering theory) ,Time projection chamber ,Large Hadron Collider ,Physics::Instrumentation and Detectors ,FOS: Physical sciences ,Gating ,Instrumentation and Detectors (physics.ins-det) ,Dead time ,Space charge ,Particle identification ,law.invention ,Computational physics ,law ,Nuclear Experiment (nucl-ex) ,Collider ,Nuclear Experiment - Abstract
Time Projection Chamber (TPC) is one of the main tracking systems for many current and future collider experiments at RHIC and LHC. It has a capability to measure the space points of charged tracks for good momentum resolution as well as the energy loss (dE/dx) for particle identification with good energy resolution. Both of these features depend strongly on the amount of space charge in the TPC gas volume, mainly due to the ions from the amplification stage. An active gating grid has been used thus far to gate the electrons and ions by switching the polarities of the grid wires. Therefore, active gating does introduce a limitation for data taking rates in high luminosity collisions. In this work we propose several options of a passive gating, where a significant reduction of Ion Back Flow (IBF) is possible in a high luminosity environment without any dead time issues due to gating operation. Particularly, the application of a TPC passive gating for the sPHENIX experiment at RHIC is presented, which is currently under development., Comment: Conference proceeding for 2019 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE, Manchester, UK
- Published
- 2019
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19. High pT single identified particles in various systems, various collision energies, and several scaling variables
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Klaus Dehmelt
- Subjects
Physics ,Quark ,Nuclear and High Energy Physics ,Particle physics ,Large Hadron Collider ,Opacity ,010308 nuclear & particles physics ,Scattering ,Hadron ,Observable ,01 natural sciences ,Charged particle ,Nuclear physics ,0103 physical sciences ,Nuclear Experiment ,010306 general physics ,Scaling - Abstract
Results of the opacity of a system created in heavy ion collisions are presented. This property of the system can be described through measurements of the fractional energy loss of single identified hadrons at high p T and allows to establish scaling properties based on scaling variables such as number of participants, number of quark participants, charged particle density, and Bjorken energy density. To characterize the energy loss mechanism an extended study is shown with data-sets both from PHENIX at RHIC and ALICE at LHC and by plotting the fractional momentum loss against several scaling variables. It is shown that in the p T region where hard scattering is expected to dominate, in all but the most peripheral collisions, δ p T / p T exhibits a simple scaling with those global observables.
- Published
- 2016
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20. A Study of 'Zigzag' Strip Readout for Micromegas Detectors
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Klaus Dehmelt, M. Vandenbroucke, Martin Purschke, C. E. Perez Lara, H. Pereira Da Costa, Helder Alves, T. K. Hemmick, S. Aune, C. L. Woody, B. Azmoun, M. Kebbiri, I. Mandjavidze, A. Deshpande, Prakhar Garg, A. Kiselev, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
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Physics::Instrumentation and Detectors ,fabrication ,Laser tuning ,Tracking (particle physics) ,01 natural sciences ,Charge sharing ,law.invention ,Optics ,law ,electrode: design ,Strips ,0103 physical sciences ,Laser beam cutting ,Fermilab ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Collider ,p: irradiation ,Physics ,Spatial resolution ,010308 nuclear & particles physics ,business.industry ,Detector ,MicroMegas detector ,Detectors ,Laser ablation ,Zigzag ,readout ,High Energy Physics::Experiment ,Particle physics experiments ,business ,Micromegas ,Laser beams - Abstract
International audience; Micromegas detectors are now commonly used as tracking detectors for nuclear and particle physics experiments. The aim of this work was to optimize the segmentation of a Micromegas readout plane by performing a systematic study of overlapping patterns known as "zigzags". By improving the charge sharing between neighboring strips, the zigzag pattern allows one to maintain high spatial resolution even with relatively large values of strip-to-strip distance (pitch). This can decrease the number of channels and therefore substantially lower the cost and complexity of large detector systems such as those proposed for the future Electron Ion Collider (EIC). Using a laser ablation process we were able to successfully build four 10cm x 10cm Micromegas detectors with one hundred different zigzag patterns on a single readout plane. The detectors were tested in the test beam at Fermilab in March 2018 where the spatial resolution of each pattern was measured using the 120 GeV proton beam. Preliminary results show that spatial resolutions of ~90μm for a 0.8mm pitch can be achieved with a negligibly small fraction of single-pad clusters and would provide a substantial improvement for future tracking detectors.
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- 2018
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21. Performance of a Quintuple-GEM Based RICH Detector Prototype
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Thomas Videbaek, Dhruv Dixit, N. Feege, Klaus Dehmelt, A. Deshpande, T. K. Hemmick, Martin Purschke, M. Blatnik, W. Roh, Fernando Torales-Acosta, Benji Lewis, and Stephanie Zajac
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Physics ,Nuclear and High Energy Physics ,Physics - Instrumentation and Detectors ,High energy particle ,Detector ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,Radiation length ,Particle identification ,law.invention ,Nuclear physics ,Nuclear Energy and Engineering ,law ,Pseudorapidity ,Gas electron multiplier ,Electrical and Electronic Engineering ,Collider ,Relativistic Heavy Ion Collider - Abstract
Cerenkov technology is often the optimal choice for particle identification in high energy particle collision applications. Typically, the most challenging regime is at high pseudorapidity (forward) where particle identification must perform well at high high laboratory momenta. For the upcoming Electron Ion Collider (EIC), the physics goals require hadron ($\pi$, K, p) identification up to $\sim$~50 GeV/c. In this region Cerenkov Ring-Imaging is the most viable solution.\newline The speed of light in a radiator medium is inversely proportional to the refractive index. Hence, for PID reaching out to high momenta a small index of refraction is required. Unfortunately, the lowest indices of refraction also result in the lowest light yield ($\frac{dN_\gamma}{dx} \propto \sin^2{\left(\theta_C \right)}$) driving up the radiator length and thereby the overall detector cost. In this paper we report on a successful test of a compact RICH detector (1 meter radiator) capable of delivering in excess of 10 photoelectrons per ring with a low index radiator gas ($CF_4$). The detector concept is a natural extension of the PHENIX HBD detector achieved by adding focusing capability at low wavelength and adequate gain for high efficiency detection of single-electron induced avalanches. Our results indicate that this technology is indeed a viable choice in the forward direction of the EIC. The setup and results are described within., Comment: 10 pages, 15 figures
- Published
- 2015
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22. Measurements of azimuthal anisotropy and charged-particle multiplicity in d + Au collisions at sNN=200 , 62.4, 39, and 19.6 GeV
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Jiro Murata, Norbert Novitzky, Mate Csanad, Toru Sugitate, Ron Soltz, Ming Liu, Yaroslav Berdnikov, Michael Tannenbaum, Vladimir Khachatryan, Pavel Radzevich, Itzhak Tserruya, Christine Nattrass, Tetsuya Murakami, Abhisek Sen, Sandor Lokos, Dmitry Kotov, Krista Smith, Klaus Dehmelt, Yuji Goto, David Silvermyr, Victor Riabov, Andrey Yanovich, Wesley Metzger, Kenneth Read, Kyoichiro Ozawa, Prakhar Garg, Sergey Fokin, Xuan Li, Deepali Sharma, Hiroyuki Sako, Joe Osborn, Sourav Tarafdar, Jin Huang, Aleksandr Berdnikov, Arbin Timilsina, Kiyoshi Tanida, and Kenta Shigaki
- Subjects
Physics ,Particle physics ,010308 nuclear & particles physics ,Monte Carlo method ,Elliptic flow ,Parton ,01 natural sciences ,Charged particle ,Nuclear physics ,Pseudorapidity ,0103 physical sciences ,Rapidity ,Multiplicity (chemistry) ,Nuclear Experiment ,010306 general physics ,Scaling - Abstract
We present measurements of the elliptic flow (v2) as a function of transverse momentum (pT), pseudorapidity (η), and centrality in d+Au collisions at sNN=200, 62.4, 39, and 19.6 GeV. The beam-energy scan of d+Au collisions provides a testing ground for the onset of flow signatures in small collision systems. We measure a nonzero v2 signal at all four collision energies, which, at midrapidity and low pT, is consistent with predictions from viscous hydrodynamic models. Comparisons with calculations from parton transport models (based on the ampt Monte Carlo generator) show good agreement with the data at midrapidity to forward (d-going) rapidities and low pT. At backward (Au-going) rapidities and pT>1.5GeV/c, the data diverges from ampt calculations of v2 relative to the initial geometry, indicating the possible dominance of nongeometry related correlations, referred to as nonflow. We also present measurements of the charged-particle multiplicity (dNch/dη) as a function of η in central d+Au collisions at the same energies. We find that in d+Au collisions at sNN=200 GeV the v2 scales with dNch/dη over all η in the PHENIX acceptance. At sNN=62.4, and 39 GeV, v2 scales with dNch/dη at midrapidity and forward rapidity, but falls off at backward rapidity. This departure from the dNch/dη scaling may be a further indication of nonflow effects dominating at backward rapidity.
- Published
- 2017
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23. B -meson production at forward and backward rapidity in p+p and Cu + Au collisions at sNN=200 GeV
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Jiro Murata, Norbert Novitzky, Mate Csanad, Toru Sugitate, Ron Soltz, Ming Liu, Yaroslav Berdnikov, Michael Tannenbaum, Vladimir Khachatryan, Hideyuki Oide, Zvi Citron, Pavel Radzevich, Vladislav Pantuev, Yue Shi Lai, Abraham Meles, Itzhak Tserruya, Christine Nattrass, Tetsuya Murakami, J. Ali Hanks, Abhisek Sen, Raphael Cervantes, Sandor Lokos, Prashanta Kumar Khandai, Dmitry Kotov, Krista Smith, Klaus Dehmelt, Yuji Goto, David Silvermyr, Victor Riabov, Andrey Yanovich, Wesley Metzger, Kenneth Read, Kyoichiro Ozawa, Soumya Mohapatra, Carlos Eugenio Perez Lara, Prakhar Garg, Takahito Todoroki, Sergey Fokin, Yoshinori Fukao, Xuan Li, Shinya Sawada, Andrew Glenn, Aleksei Safonov, Deepali Sharma, Hiroyuki Sako, Joe Osborn, Sourav Tarafdar, Tomofumi Nagae, Margaret Jezghani, Serpil Yalcin Kuzu, Peter Christiansen, Jin Huang, Aleksandr Berdnikov, Bhartendu K. Singh, Ryugo Hayano, Arbin Timilsina, Kiyoshi Tanida, Kenta Shigaki, and Tsutomu Mibe
- Subjects
Quark ,Physics ,Particle physics ,Meson ,010308 nuclear & particles physics ,01 natural sciences ,7. Clean energy ,Nuclear physics ,0103 physical sciences ,Quark–gluon plasma ,B meson ,Statistical analysis ,Rapidity ,PHENIX detector ,010306 general physics - Abstract
The fraction of J/ψ mesons which come from B-meson decay, FB→J/ψ, is measured for J/ψ rapidity 1.20 in p+p and Cu+Au collisions at sNN = 200 GeV with the PHENIX detector. The extracted fraction is FB→J/ψ=0.025±0.006 (stat) ± 0.010(syst) for p+p collisions. For Cu+Au collisions, FB→J/ψ is 0.094 ± 0.028(stat) ± 0.037(syst) in the Au-going direction (-2.2
- Published
- 2017
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24. High pT single identified particles in various collision systems with the PHENIX detector at RHIC
- Author
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Klaus Dehmelt
- Subjects
Physics ,modification ,d+au ,phenix ,Hadron ,Parton ,raa ,Collision ,Nuclear physics ,jet quenching ,nuclear ,epshep17 ,cu+au ,cnm effects ,Energy density ,Production (computer science) ,PHENIX detector ,Nuclear Experiment ,Jet quenching ,p+au ,3he+au ,Energy (signal processing) - Abstract
Jet quenching in the hot, dense medium formed in Au+Au collisions leads to the suppression of high $p_T$ particles which can be studied with the measurement of the leading hadrons, like $\pi^0$. They can be used to investigate the mechanism of energy loss of partons in a QGP when varying the collision geometry. Asymmetric Cu+Au collisions provide a system with similar energy density but different collision geometry when compared to Au+Au, with the same number of nucleon-nucleon collisions. Furthermore, at RHIC we can study different highly asymmetric collisions, such as p+Au, d+Au and $^3$He+Au. The observation of collective behavior in these systems suggests the creation of a medium, but alternate explanations exist. The systematic study of the $\pi^0$ production could give us deeper understanding of the physics in these very asymmetric systems.\\ We present new measurements of $\pi^0$ with PHENIX in the asymmetric collisions at midrapidity $|\eta
- Published
- 2017
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25. A Time Projection Chamber with GEM-Based Readout
- Author
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Makoto Kobayashi, Vladyslav Krylov, Takeshi Matsuda, Leif J. Jönsson, R. Mehdiyev, J. Timmermans, Jochen Kaminski, M. S. Dixit, Yang Gao, Oliver Schäfer, Gilles De Lentdecker, Claus Kleinwort, Astrid Münnich, Katsumasa Ikematsu, Björn Lundberg, Fan Zhang, Junping Tian, Y. Kato, Amir Noori Shirazi, R. Yonamine, Sudeb Bhattacharya, Oleg Bezshyyko, Serguei Ganjour, Ulf Mjörnmark, Supratik Mukhopadhyay, Deb Sankar Bhattacharya, Vincent Hedberg, Keisuke Fujii, Anders Nils Erik Oskarsson, Philippe Gros, Ivor Fleck, Tohru Takahashi, Maksym Titov, Ralf Diener, Wenxin Wang, Tomohisa Ogawa, Yifan Yang, Ronald Settles, D. Tsionou, Ulrich Werthenbach, Takahiro Fusayasu, Martin Killenberg, Yulan Li, P. Colas, S. Caiazza, Alain Bellerive, Klaus Dehmelt, Ties Behnke, M. Riallot, Akira Sugiyama, Zhenwei Yang, Shin ichi Kawada, Nayana Majumdar, Annika Vauth, Takashi Watanabe, Klaus Kurt Desch, Klaus Zenker, D. Peterson, Peter Hayman, Bo Li, Purba Bhattacharya, Lennart Österman, Stefan Roth, Christoph Rosemann, M. Lupberger, Oxana Smirnova, Peter Schade, David Attié, F. Müller, Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Département de Physique des Particules (ex SPP) ( DPP ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, LCTPC, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Département de Physique des Particules (ex SPP) (DPP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Leprince-Ringuet (LLR), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Nuclear and High Energy Physics ,Drift velocity ,Physics - Instrumentation and Detectors ,International Linear Collider ,Micropattern gaseous detectors (MPGD) ,Physics::Instrumentation and Detectors ,FOS: Physical sciences ,Tracking (particle physics) ,01 natural sciences ,law.invention ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,law ,[ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,Gas electron multipliers (GEM) ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,International Large Detector (ILD) ,electron: irradiation ,tracking detector ,[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Detectors and Experimental Techniques ,010306 general physics ,Instrumentation ,spatial resolution ,[ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det] ,Physics ,magnetic field: spatial distribution ,International Linear Collider (ILC) ,Time projection chamber ,010308 nuclear & particles physics ,ILD detector ,Detector ,drift velocity ,DESY ,Instrumentation and Detectors (physics.ins-det) ,Synchrotron ,time projection chamber ,efficiency ,gas electron multiplier ,Gas electron multiplier ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Time projection chambers (TPC) - Abstract
For the International Large Detector concept at the planned International Linear Collider, the use of time projection chambers (TPC) with micro-pattern gas detector readout as the main tracking detector is investigated. In this paper, results from a prototype TPC, placed in a 1 T solenoidal field and read out with three independent GEM-based readout modules, are reported. The TPC was exposed to a 6 GeV electron beam at the DESY II synchrotron. The efficiency for reconstructing hits, the measurement of the drift velocity, the space point resolution and the control of field inhomogeneities are presented., 22 pages, 19 figures
- Published
- 2017
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26. The path through sPHENIX and fsPHENIX toward an EIC detector at eRHIC
- Author
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Klaus Dehmelt
- Subjects
Nuclear physics ,Physics ,Detector ,Path (graph theory) - Published
- 2016
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- View/download PDF
27. ϕmeson production in the forward/backward rapidity region in Cu + Au collisions atsNN=200GeV
- Author
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Jiro Murata, Norbert Novitzky, Mate Csanad, Toru Sugitate, Kazuya Aoki, Ron Soltz, Ming Liu, HARI GURAGAIN, Yaroslav Berdnikov, Michael Tannenbaum, Vladimir Khachatryan, Hideyuki Oide, Zvi Citron, Vladislav Pantuev, Aaron Angerami, Yue Shi Lai, Abraham Meles, Itzhak Tserruya, Marisilvia Donadelli, Yuhei Morino, J. Matthew Durham, Christine Nattrass, Tetsuya Murakami, J. Ali Hanks, Abhisek Sen, Prashanta Kumar Khandai, Anselm Vossen, Dmitry Kotov, Naohito SAITO, Klaus Dehmelt, Raphael Tieulent, Yuji Goto, David Silvermyr, Victor Riabov, Andrey Yanovich, INSEOK YOON, Kenneth Read, Kyoichiro Ozawa, Austin Basye, Soumya Mohapatra, Ondrej Chvala, Prakhar Garg, Takahito Todoroki, Vassili Papavassiliou, Sergey Fokin, Yoshinori Fukao, Manabu Togawa, Dmitry Blau, Shinya Sawada, Andrew Glenn, Deepali Sharma, Hiroyuki Sako, Joe Osborn, Sourav Tarafdar, Tomofumi Nagae, Margaret Jezghani, Serpil Yalcin Kuzu, Peter Christiansen, Jin Huang, Aleksandr Berdnikov, Bhartendu K. Singh, Ryugo Hayano, Arbin Timilsina, Kiyoshi Tanida, Kenta Shigaki, and Tsutomu Mibe
- Subjects
Physics ,Particle physics ,Meson production ,Quantitative Biology::Neurons and Cognition ,010308 nuclear & particles physics ,media_common.quotation_subject ,High Energy Physics::Phenomenology ,Nuclear Theory ,7. Clean energy ,01 natural sciences ,Asymmetry ,Nuclear physics ,0103 physical sciences ,Quark–gluon plasma ,High Energy Physics::Experiment ,Rapidity ,Multiplicity (chemistry) ,Nuclear Experiment ,010306 general physics ,Relativistic Heavy Ion Collider ,Nucleon ,Glauber ,media_common - Abstract
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured φ meson production and its nuclear modification in asymmetric Cu + Au heavy
- Published
- 2016
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- View/download PDF
28. Measurement of Leptonic Structure Functions with the L3 detector at LEP
- Author
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Klaus Dehmelt
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Photon ,Detector ,Structure function ,Elementary particle ,Atomic and Molecular Physics, and Optics ,Nuclear physics ,Massless particle ,High Energy Physics::Experiment ,Center of mass ,Nuclear Experiment ,Boson - Abstract
We report on a measurement of dimuon events obtained in a sample of single-tagged two photon events, at low Q2, between 0.2 GeV2 and 0.85 GeV2. The data were recorded by the L3 detector at LEP at center of mass energies between 189 GeV and 206 GeV. Production cross-sections and the leptonic structure functions will be presented.
- Published
- 2008
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- View/download PDF
29. Neutral-current four-fermion production in e+e− interactions at LEP
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S. Pensotti, Valery Schegelsky, Antonino Zichichi, Igor Vorobiev, H. Rykaczewski, Giovanni Organtini, Felicitas Pauss, H. Anderhub, S. Rosier-Lees, W. Kittel, G. S. Muanza, P. Le Coultre, M. Basile, Michele Guida, P. Levtchenko, Panos A Razis, R. Leiste, B. Musicar, Jean Fay, Riccardo Paramatti, A. Kunin, D. Haas, A. Favara, M. Vivargent, A. Arefiev, P. G. Rancoita, C. Palomares, A. Barczyk, R. R. McNeil, F. Pierella, S. Braccini, C-Q. Li, J.V. Allaby, S. Patricelli, Federico Cindolo, J. K. Kim, V. K. Gupta, H. L. Zhuang, Yu. Galaktionov, B. N. Jin, Marcella Diemoz, Adrian Biland, Z. Szillasi, Arno Straessner, L. Cifarelli, H. Nowak, L. Baksay, V. Koutsenko, D. Hatzifotiadou, E. Delmeire, J. Alcaraz, S. Sushkov, S. Bottai, Luca Lista, J. Berdugo, Y. S. Lu, G. Mirabelli, Laszlo Boldizsar, Gianpaolo Carlino, F. DeNotaristefani, Marc Weber, M. Rescigno, Mingming Yang, R. de Asmundis, I. Fisk, E. J. Sanchez, A. Shvorob, R. Vasquez, G. Forconi, M. Pohl, S. C. Tonwar, J. Mnich, Simonetta Gentile, M. Levtchenko, G. Holzner, Piero Spillantini, Frank Filthaut, H. Milcent, C. Souga, K. Riles, M. Pioppi, A. Klimentov, Francesca Cavallari, Thomas Ferguson, John Swain, Jozsef Toth, J. H. Field, A. Mihul, G. Alemanni, L. J. Gutay, Peter H. Fisher, F. Marzano, G. Coignet, Willis Lin, Sabine Riemann, U. Becker, Z. A. Liu, M. W. Gruenewald, I. Vodopianov, A. Engler, P. Tarján, Dimitri Bourilkov, B. Stoyanov, V. Veszpremi, J. P. Martin, S. C. Yeh, M. Lebeau, Lamberto Luminari, P. Extermann, Tariq Aziz, D. Teyssier, S. Wynhoff, M. Capell, Christoph Schäfer, B. Z. Yang, R. Ranieri, P. Berges, Vladimir Andreev, Ren-Yuan Zhu, B. De La Cruz, M. Pedace, B. P. Roe, M. Biglietti, H. S. Fesefeldt, E. Pistolesi, G. Grenier, Qiuwang Wang, S. Saremi, Stefan Roth, Roberto Battiston, Alexander S. Sakharov, An.A. Vorobyov, G. Y. Zhu, E. Shumilov, F. J. Eppling, L. W. Jones, S. M. Ting, A. Gurtu, H. Hofer, K. L. Tung, A. El Hage, Aleandro Nisati, R. T. Van de Walle, Alexander Malinin, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, B. Echenard, A. De Salvo, H. El Mamouni, Crisostomo Sciacca, Subir Sarkar, F. Brochu, D. della Volpe, Gerjan Bobbink, P. Jindal, T. Paul, M. Kopal, M. Steuer, B. Borgia, M. T. Dova, J. Ulbricht, O. Adriani, Imad Baptiste Laktineh, Lucas Taylor, P. Bartalini, Nicola Cavallo, B. Zimmermann, A. Lebedev, Pierluigi Paolucci, Dong-Chul Son, C. Dionisi, P. Déglon, Speranza Falciano, Konrad Deiters, J. M. Le Goff, J. Yamamoto, Christoph Rosemann, J. A. Rubio, B. Tellili, W. C. Fisher, Claudia Cecchi, D. P. Stickland, Leonardo Merola, L. Tauscher, Harvey B Newman, Sw. Banerjee, T. Azemoon, Pierre Lecomte, Y. H. Chang, G. B. Mohanty, J. J. Blaising, J. Hirschfelder, Stefano Giagu, A. Bajo, Egidio Longo, Pablo Garcia-Abia, Alain Hervé, Alberto Aloisio, N. Batalova, Peter Denes, G. Cara Romeo, P. Lebrun, S. Reucroft, J. Debreczeni, A. Bay, J. G. Branson, J. Mans, Werner Lustermann, Charles Timmermans, M. Dierckxsens, E. Valente, An. Zalite, I. Clare, S. Vlachos, Marcos Cerrada, Mariagrazia Alviggi, Jiawei Zhao, Sándor Nagy, Paolo Bagnaia, Francesca Nessi-Tedaldi, S. C. Blyth, Marco Meschini, J. Casaus, Davide Piccolo, Helmut Vogel, L. Xia, X. L. Wang, M. A. Rahaman, D. Perret-Gallix, S. N. Ganguli, Georgi Sultanov, Axel König, C. Furetta, Oleg Fedin, M. Pauluzzi, B. L. Betev, Klaus Dehmelt, Guo-Ming Chen, F. L. Linde, X. W. Tang, A. Degré, P. A. Piroué, M. Aguilar-Benitez, O. Grimm, W. J. Burger, Herwig Schopper, S. Natale, I. Vetlitsky, J. D. Burger, G. Ruggiero, A. Chen, Maurizio Biasini, M. Chamizo, Peter Raics, S. Mele, C. Rosenbleck, G. Viertel, Michael Dittmar, Marta Felcini, J. Salicio, G. Rahal-Callot, Z. F. Gong, N. Raja, C. G. Yang, Kajari Mazumdar, X. D. Cai, D. Ren, J. Pothier, Yu. Zalite, Zheng Wang, A. Eline, V. Plyaskin, C. Paus, Christopher George Tully, Francesco Becattini, B. Roux, K. Sudhakar, Zhenyu Zhang, S. Costantini, A. M. Cartacci, Marcus Hohlmann, Wesley James Metzger, A. Rosca, M. Duda, T. Novak, M. Gataullin, H. J. Yang, K. Freudenreich, M. Chemarin, H. Suter, R. Ofierzynski, P. Ladron de Guevara, S. Likhoded, G. M. Chen, Alexei Raspereza, L. Romero, Z. Z. Xu, C. H. Lin, G. Baksay, V. Pojidaev, M. Bourquin, A. Krüger, Wolfgang Lohmann, H. Vogt, P. Achard, Samuel C.C. Ting, R. Barillère, B. Bertucci, S. V. Baldew, S. Cucciarelli, M. N. Kienzle-Focacci, D. O. Prokofiev, L. Z. Sun, A. Böhm, Jasper Kirkby, M. A. Falagan, C. Maña, F. Anselmo, Nicanor Colino, M. Zöller, L. Bellucci, V. Shoutko, G. Passaleva, I. Josa-Mutuberria, M. Kräber, M. Musy, R. Berbeco, I. Pal, R. Ramelli, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, D. Duchesneau, H. S. Chen, L. Servoli, G. Landi, A. J.M. Muijs, Manjit Kaur, H. F. Chen, G. Chiefari, S. Shevchenko, F. Behner, Alessandra Doria, S. R. Hou, M. Wadhwa, D. J. Schotanus, and S. Villa
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Physics ,Nuclear and High Energy Physics ,Muon ,Neutral current ,010308 nuclear & particles physics ,Fermion ,Electron ,01 natural sciences ,Standard Model ,0103 physical sciences ,Mass spectrum ,Heavy particle ,Atomic physics ,010306 general physics - Abstract
Neutral-current four-fermion production, e + e − → f f ¯ f ′ f ¯ ′ , is studied in 0.7 fb −1 of data collected with the L3 detector at LEP at centre-of-mass energies s = 183 – 209 GeV . Four final states are considered: q q ¯ ν ν ¯ , q q ¯ l + l − , l + l − l ′ + l ′ − and l + l − ν ν ¯ , where l denotes either an electron or a muon. Their cross sections are measured and found to agree with the Standard Model predictions. In addition, the e + e − → Z γ ∗ → f f ¯ f ′ f ¯ ′ process is studied and its total cross section at the average centre-of-mass energy 〈 s 〉 = 196.6 GeV is found to be 0.29 ± 0.05 ± 0.03 pb , where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model prediction of 0.22 pb. Finally, the mass spectra of the q q ¯ l + l − final states are analysed to search for the possible production of a new neutral heavy particle, for which no evidence is found.
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- 2005
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30. Study of the e+e−→Zγ process at LEP and limits on triple neutral-gauge-boson couplings
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B. Zimmermann, Felicitas Pauss, S. Rosier-Lees, Konrad Deiters, P. Le Coultre, G. B. Mohanty, Alberto Aloisio, Samuel C.C. Ting, H. Anderhub, G. Ruggiero, M. Basile, Simonetta Gentile, A. Klimentov, Sándor Nagy, Michele Guida, A. Lebedev, Dong-Chul Son, S. Sushkov, Zhen Zhang, X. W. Tang, J. J. Blaising, J. Hirschfelder, Stefano Giagu, M. Pioppi, S. Braccini, M. Vivargent, D. Piccolo, P. A. Piroué, M. Chamizo, G. Mirabelli, L. J. Gutay, G. Cara Romeo, B. P. Roe, U. Becker, R. de Asmundis, I. Fisk, G. Chiefari, Roberto Battiston, Peter H. Fisher, Klaus Dehmelt, V. Veszpremi, S. Shevchenko, Aleandro Nisati, Georgi Sultanov, Joseph Quartieri, H. Vogt, G. Baksay, F. J. Eppling, L. W. Jones, Leonardo Merola, I. Vetlitsky, Ren-Yuan Zhu, F. Behner, F. Brochu, P. G. Rancoita, Gerjan Bobbink, B. Borgia, D. della Volpe, B. N. Jin, J. K. Kim, S. M. Ting, M. Pedace, M. Chemarin, F. Pierella, L. Tauscher, M. T. Dova, J. Ulbricht, Federico Cindolo, G. M. Chen, J. Mnich, H. Nowak, D. Vicinanza, A. Gurtu, Lamberto Luminari, A. Barczyk, C. Palomares, B. De La Cruz, M. Rescigno, H. El Mamouni, B. Tellili, T. Azemoon, R. Ramelli, Adrian Biland, P. Tarján, Dimitri Bourilkov, I. Clare, Marcos Cerrada, Marc Weber, P. Spillantini, P. de Jong, S. Banerjee, N. Shivarov, Claudio Luci, A. El Hage, G. Passaleva, Pierre Lecomte, P. Déglon, Speranza Falciano, Tariq Aziz, B. Petersen, S. C. Tonwar, E. Fiandrini, Gyorgy Vesztergombi, D. Teyssier, Pierluigi Paolucci, Frank Filthaut, Robert Clare, S. Costantini, Zheng Wang, Riccardo Paramatti, C. Souga, Werner Lustermann, Charles Timmermans, M. Dierckxsens, B. Echenard, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, J. A. van Dalen, A. De Salvo, Oleg Fedin, H. Milcent, Thomas Ferguson, Z. Szillasi, M. Napolitano, P. Bartalini, S. Bottai, Egidio Longo, J.V. Allaby, S. Patricelli, Yu. Galaktionov, I. Vodopianov, Alessandra Doria, Harvey B Newman, M. Musy, W. J. Burger, P. Lebrun, V. Koutsenko, A. Rosca, Michael Dittmar, D. Duchesneau, H. S. Chen, J. Alcaraz, Jeremy Mans, Jiawei Zhao, Crisostomo Sciacca, L. Servoli, A. Engler, S. Wynhoff, D. Hatzifotiadou, Laszlo Boldizsar, M. Capell, A. Kunin, P. Ladron de Guevara, An.A. Vorobyov, R. Leiste, I. Pal, H. S. Fesefeldt, E. Pistolesi, S. R. Hou, M. Wadhwa, D. J. Schotanus, M. Gataullin, K. Sudhakar, O. Adriani, Imad Baptiste Laktineh, A. Mihul, G. Alemanni, A. Bajo, Guo-Ming Chen, F. L. Linde, Vladimir Andreev, Lucas Taylor, M. G. Alviggi, R. Vasquez, J. G. Branson, A. Böhm, J. Casaus, S. C. Yeh, A. Chen, J. Salicio, S. N. Ganguli, R. van Gulik, C. Furetta, G. Forconi, M. Pohl, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, K. L. Tung, G. Landi, A. Degré, C. Rosenbleck, W. J. Metzger, C. G. Yang, J. Pothier, Yu. Zalite, Jozsef Toth, A. J.M. Muijs, Manjit Kaur, A. Eline, D. P. Stickland, Y. H. Chang, R. T. Van de Walle, G. Grenier, D. Haas, S. Reucroft, J. Debreczeni, L. Romero, S. Sarkar, M. Bourquin, E. Delmeire, P. Achard, Y. S. Lu, Francesca Nessi-Tedaldi, J. D. Burger, G. Rahal-Callot, N. Raja, Peter Denes, H. Suter, A. Shvorob, R. Ranieri, M. Levtchenko, E. Valente, Paolo Bagnaia, S. C. Blyth, S. Pensotti, Valery Schegelsky, Antonino Zichichi, J. H. Field, H. Rykaczewski, Giovanni Organtini, H. Wilkens, Marco Meschini, B. Stoyanov, G. S. Muanza, Jean Fay, Maurizio Biasini, Christopher George Tully, G. Viertel, Hans J. Vogel, Wolfgang Lohmann, B. Bertucci, Marta Felcini, W. T. Lin, F. Anselmo, Nicanor Colino, Hao-Ze Chen, B. Musicar, A. Favara, Francesco Becattini, Marcella Diemoz, L. Cifarelli, L. Baksay, V. Shoutko, N. Batalova, H. J. Yang, Peter Raics, R. Ofierzynski, Kajari Mazumdar, X. D. Cai, S. Likhoded, Marcus Hohlmann, V. Plyaskin, Alexander Malinin, T. Novak, M. Duda, K. Freudenreich, Z. A. Liu, Alexei Raspereza, M. W. Gruenewald, W. C. Fisher, Qiuwang Wang, A. Krüger, S. Saremi, Stefan Roth, S. Cucciarelli, L. Z. Sun, R. Barillère, C. Maña, An. Zalite, C-Q. Li, S. V. Baldew, D. O. Prokofiev, V. K. Gupta, J. M. Le Goff, J. Yamamoto, Christoph Rosemann, Jasper Kirkby, M. A. Falagan, M. Zöller, L. Bellucci, F. DeNotaristefani, T. Paul, Ya Han Hu, S. Natale, J. A. Rubio, C. Paus, M. Kopal, L. Malgeri, P. Berges, B. L. Betev, S. Vlachos, M. Steuer, M. A. Rahaman, D. Perret-Gallix, Luca Lista, C. Dionisi, Pablo Garcia-Abia, Alain Hervé, A. Bay, Sabine Riemann, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, A. M. Cartacci, A. C. König, I. Josa-Mutuberria, M. Kräber, Z. Z. Xu, R. Berbeco, C. H. Lin, V. Pojidaev, Michela Biglietti, A. Arefiev, R. R. McNeil, G. Carlino, H. L. Zhuang, Arno Straessner, G. Holzner, K. Riles, F. Marzano, G. Coignet, S. Villa, Igor Vorobiev, P. Levtchenko, Panos A Razis, J. Berdugo, E. J. Sanchez, W. Kittel, X. L. Wang, M. Pauluzzi, D. Ren, Mingming Yang, Francesca Cavallari, John Swain, J. P. Martin, Alexander S. Sakharov, G. Y. Zhu, E. Shumilov, M. N. Kienzle-Focacci, Claudia Cecchi, M. Lebeau, Nicola Cavallo, and Z. F. Gong
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Physics ,Nuclear and High Energy Physics ,Particle physics ,Gauge boson ,Photon ,010308 nuclear & particles physics ,Physics beyond the Standard Model ,Electron–positron annihilation ,High Energy Physics::Phenomenology ,Hadron ,01 natural sciences ,7. Clean energy ,Standard Model ,Nuclear physics ,0103 physical sciences ,High Energy Physics::Experiment ,Neutrino ,010306 general physics ,Bhabha scattering - Abstract
The process e+e-→Zγ where the Z boson decays into hadrons or neutrinos, is studied with data collected with the L3 detector at LEP at centre-of-mass energies from 189 up to 209 GeV. The cross sections are measured and found to be in agreement with the Standard Model predictions. Limits on triple neutral-gauge-boson couplings, forbidden in the Standard Model at tree level, are derived. Limits on the energy scales at which the anomalous couplings could be manifest are set. They range from 0.3 to 2.3 TeV depending on the new physics effect under consideration. © 2004 Published by Elsevier B.V.
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- 2004
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31. Search for branons at LEP
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R. Barillère, Roberto Battiston, J. P. Martin, N. Batalova, S. V. Baldew, D. O. Prokofiev, Felicitas Pauss, S. Rosier-Lees, P. Tarján, Dimitri Bourilkov, H. El Mamouni, L. Romero, Alexander S. Sakharov, G. Y. Zhu, E. Shumilov, Jasper Kirkby, M. A. Falagan, M. T. Dova, J. Ulbricht, B. Tellili, P. Le Coultre, M. Basile, Marco Meschini, P. Spillantini, B. Petersen, E. Fiandrini, M. Rescigno, A. Barczyk, M. Zöller, M. Bourquin, G. Cara Romeo, I. Clare, Helmut Vogel, Gyorgy Vesztergombi, S. Villa, B. Echenard, Igor Vorobiev, P. Levtchenko, Panos A Razis, Ren-Yuan Zhu, Jose A. R. Cembranos, Riccardo Paramatti, E. J. Sanchez, B. L. Betev, X. L. Wang, G. Carlino, M. Pauluzzi, Oleg Fedin, Peter Raics, D. Ren, T. Azemoon, S. Sushkov, S. Bottai, A. De Salvo, W. J. Burger, P. Bartalini, Christopher George Tully, A. Kunin, S. Mele, M. Pedace, P. Achard, Luca Lista, Kajari Mazumdar, V. Plyaskin, Egidio Longo, A. Degré, X. D. Cai, Wolfgang Lohmann, A. Gurtu, C. Souga, Z. Wang, T. Aziz, Willis Lin, W. J. Metzger, T. Novak, J. G. Branson, C. G. Yang, J. Pothier, Yu. Zalite, Harvey B Newman, I. Vodopianov, A. Engler, Alexander Malinin, B. Bertucci, Marcus Hohlmann, M. N. Kienzle-Focacci, R. Leiste, Sabine Riemann, Peter H. Fisher, S. Wynhoff, M. Capell, Jiawei Zhao, Alexei Raspereza, H. Anderhub, D. Haas, B. Zimmermann, F. Cindolo, F. Anselmo, M. Biglietti, H. S. Fesefeldt, E. Pistolesi, J. A. van Dalen, V. Veszpremi, R. Vasquez, Zhenyu Zhang, M. Lebeau, F. Behner, B. Borgia, F. Pierella, M. Vivargent, M. Dittmar, Alexei Klimentov, Michele Guida, H. Milcent, A. Krüger, A. Cartacci, W. C. Fisher, G. B. Mohanty, Alberto Aloisio, B. P. Roe, S. Braccini, Aleandro Nisati, Z. Z. Xu, C. H. Lin, V. Pojidaev, A. Biland, Joseph Quartieri, J. Allaby, K. Sudhakar, S. C. Tonwar, C. Cecchi, A. Rosca, M. Duda, X. W. Tang, R. de Asmundis, E. Delmeire, I. Fisk, Y. S. Lu, W. Kittel, Matthias Weber, J. Casaus, A. Shvorob, M. Levtchenko, Frank Filthaut, Thomas Ferguson, C. Dionisi, Subir Sarkar, F. Cavallari, Pierluigi Paolucci, H. F. Chen, P. A. Piroué, S. C. Blyth, F. Brochu, An. Zalite, K. Freudenreich, M. Chamizo, A. Lebedev, Dong-Chul Son, Georgi Sultanov, C. Palomares, P. G. Rancoita, J. H. Field, B. N. Jin, C-Q. Li, V. K. Gupta, G. Forconi, M. Pohl, M. Cerrada, D. della Volpe, S. R. Hou, M. Wadhwa, D. J. Schotanus, B. Stoyanov, G. Baksay, M. Diemoz, J. D. Burger, P. Ladron de Guevara, C. A X Pattison, G. Passaleva, H. Nowak, D. Vicinanza, D. P. Stickland, P. Lebrun, N. Cavallo, Jeremy Mans, J. Hirschfelder, Stefano Giagu, G. J. Bobbink, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Mingming Yang, L. Baksay, An.A. Vorobyov, F. DeNotaristefani, I. Josa-Mutuberria, M. Kräber, Vladimir Andreev, Y. H. Chang, M. Chemarin, Z. A. Liu, G. Chiefari, G. Mirabelli, G. M. Chen, S. Cucciarelli, C. Maña, Jozsef Toth, H. Rykaczewski, Giovanni Organtini, Mariagrazia Alviggi, O. Adriani, Guo-Ming Chen, F. L. Linde, M. W. Gruenewald, A. Doria, M. Musy, S. Banerjee, G. Grenier, Imad Baptiste Laktineh, Lucas Taylor, J. K. Kim, G. Coignet, Francesca Nessi-Tedaldi, Klaus Dehmelt, G. Ruggiero, Qiuwang Wang, S. Saremi, J. Salicio, Stefan Roth, H. Wilkens, I. Vetlitsky, Ya Han Hu, J. Mnich, G. Rahal-Callot, D. Teyssier, S. Reucroft, R. Berbeco, S. Shevchenko, N. Raja, G. S. Muanza, J. Debreczeni, Jean Fay, J. M. Le Goff, J. Yamamoto, Christoph Rosemann, P. Extermann, Christoph Schäfer, B. Z. Yang, H. Hofer, A. El Hage, K. L. Tung, P. Berges, H. Suter, A. Bajo, K. Deiters, J. A. Rubio, Crisostomo Sciacca, M. Biasini, Z. Szillasi, A. Arefiev, N. Colino, Lamberto Luminari, Z. F. Gong, P. Bagnaia, Marta Felcini, R. R. McNeil, C. Furetta, V. Koutsenko, V. Shoutko, Peter Denes, M. Gataullin, H. L. Zhuang, C. Rosenbleck, Francesco Becattini, Arno Straessner, J. Berdugo, Pierre Lecomte, Werner Lustermann, Charles Timmermans, M. Dierckxsens, G. Holzner, H. J. Yang, T. Paul, R. Ofierzynski, K. Riles, S. Likhoded, S. Natale, S. Vlachos, F. Marzano, L. Boldizsar, Samuel C.C. Ting, Simonetta Gentile, Davide Piccolo, M. Kopal, S. N. Ganguli, A. Chen, S. Nagy, M. Steuer, M. A. Rahaman, D. Perret-Gallix, R. Ranieri, B. De La Cruz, P. Déglon, Speranza Falciano, J. J. Blaising, G. Landi, A. J.M. Muijs, Manjit Kaur, A. Böhm, I. Pal, R. T. Van de Walle, R. Ramelli, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, B. Musicar, D. Duchesneau, H. S. Chen, L. Servoli, Leonardo Merola, A. Favara, L. Tauscher, L. Cifarelli, Axel König, Yu. Galaktionov, J. Alcaraz, E. Valente, A. Mihul, G. Alemanni, S. C. Yeh, G. Viertel, L. Z. Sun, S. Patricelli, D. Hatzifotiadou, L. Bellucci, Pablo Garcia-Abia, Alain Hervé, A. Bay, L. Xia, M. Aguilar-Benitez, O. Grimm, A. Eline, Herwig Schopper, M. Pioppi, C. Paus, L. J. Gutay, L. Malgeri, U. Becker, H. Vogt, F. J. Eppling, L. W. Jones, S. Costantini, S. M. Ting, John Swain, IHEF (IoP, FNWI), L3 (IHEF, IoP, FNWI), P., Achard, Aloisio, Alberto, Alviggi, Mariagrazia, Chiefari, Giovanni, DELLA VOLPE, Domenico, Merola, Leonardo, Napolitano, Marco, Patricelli, Sergio, Sciacca, Crisostomo, Lista, Luca, Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Malgeri, Luca, Natale, Sonia, Pohl, Martin, Straessner, Arno, P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, A. ALOISIO, M.G. ALVIGGI, H. ANDERHUB, V.P. ANDREEV, F. ANSELMO, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, A. BAJO, G. BAKSAY, L. BAKSAY, S.V. BALDEW, S. BANERJEE, SW. BANERJEE, A. BARCZYK, R. BARILLÈRE, P. BARTALINI, M. BASILE, N. BATALOVA, R. BATTISTON, A. BAY, F. BECATTINI, U. BECKER, F. BEHNER, L. BELLUCCI, R. BERBECO, J. BERDUGO, P. BERGES, B. BERTUCCI, B.L. BETEV, M. BIASINI, M. BIGLIETTI, A. BILAND, J.J. BLAISING, S.C. BLYTH, G.J. BOBBINK, A. BÖHM, L. BOLDIZSAR, B. BORGIA, S. BOTTAI, D. BOURILKOV, M. BOURQUIN, S. BRACCINI, J.G. BRANSON, F. BROCHU, J.D. BURGER, W.J. BURGER, X.D. CAI, M. CAPELL, G. CARA ROMEO, G. CARLINO, A. CARTACCI, J. CASAUS, F. CAVALLARI, N. CAVALLO, C. CECCHI, M. CERRADA, M. CHAMIZO, Y.H. CHANG, M. CHEMARIN, A. CHEN, G. CHEN, G.M. CHEN, H.F. CHEN, H.S. CHEN, G. CHIEFARI, L. CIFARELLI, F. CINDOLO, I. CLARE, R. CLARE, G. COIGNET, N. COLINO, S. COSTANTINI, B. DE LA CRUZ, S. CUCCIARELLI, J.A. VAN DALEN, R. DE ASMUNDIS, P. DÉGLON, J. DEBRECZENI, A. DEGRÉ, K. DEHMELT, K. DEITERS, D. DELLA VOLPE, E. DELMEIRE, P. DENES, F. DE NOTARISTEFANI, A. DE SALVO, M. DIEMOZ, M. DIERCKXSENS, C. DIONISI, M. DITTMAR, A. DORIA, M.T. DOVA, D. DUCHESNEAU, M. DUDA, B. ECHENARD, A. ELINE, A. EL HAGE, H. EL MAMOUNI, A. ENGLER, F.J. EPPLING, P. EXTERMANN, M.A. FALAGAN, S. FALCIANO, A. FAVARA, J. FAY, O. FEDIN, M. FELCINI, T. FERGUSON, H. FESEFELDT, E. FIANDRINI, J.H. FIELD, F. FILTHAUT, P.H. FISHER, W. FISHER, I. FISK, G. FORCONI, K. FREUDENREICH, C. FURETTA, YU. GALAKTIONOV, S.N. GANGULI, P. GARCIA-ABIA, M. GATAULLIN, S. GENTILE, S. GIAGU, Z.F. GONG, G. GRENIER, O. GRIMM, M.W. GRUENEWALD, M. GUIDA, V.K. GUPTA, A. GURTU, L.J. GUTAY, D. HAAS, D. HATZIFOTIADOU, T. HEBBEKER, A. HERVÉ, J. HIRSCHFELDER, H. HOFER, M. HOHLMANN, G. HOLZNER, S.R. HOU, Y. HU, B.N. JIN, L.W. JONES, P. DE JONG, I. JOSA-MUTUBERRÍA, M. KAUR, M.N. KIENZLE-FOCACCI, J.K. KIM, J. KIRKBY, W. KITTEL, A. KLIMENTOV, A.C. KOENIG, M. KOPAL, V. KOUTSENKO, M. KRAEBER, R.W. KRAEMER, A. KRUEGER, A. KUNIN, P. LADRON DE GUEVARA, I. LAKTINEH, G. LANDI, M. LEBEAU, A. LEBEDEV, P. LEBRUN, P. LECOMTE, P. LECOQ, P. LE COULTRE, J.M. LE GOFF, R. LEISTE, M. LEVTCHENKO, P. LEVTCHENKO, C. LI, S. LIKHODED, C.H. LIN, W.T. LIN, F.L. LINDE, L. LISTA, Z.A. LIU, W. LOHMANN, E. LONGO, Y.S. LU, C. LUCI, L. LUMINARI, W. LUSTERMANN, W.G. MA, L. MALGERI, A. MALININ, C. MANA, D. MANGEOL, J. MANS, J.P. MARTIN, F. MARZANO, K. MAZUMDAR, R.R. MCNEIL, S. MELE, L. MEROLA, M. MESCHINI, W.J. METZGER, A. MIHUL, H. MILCENT, G. MIRABELLI, J. MNICH, G.B. MOHANTY, G.S. MUANZA, A.J.M. MUIJS, B. MUSICAR, M. MUSY, S. NAGY, S. NATALE, M. NAPOLITANO, F. NESSI-TEDALDI, H. NEWMAN, A. NISATI, T. NOVAK, H. NOWAK, R. OFIERZYNSKI, G. ORGANTINI, I. PAL, C. PALOMARES, P.PAOLUCCI, R. PARAMATTI, G. PASSALEVA, S. PATRICELLI, T. PAUL, M. PAULUZZI, C. PAUS, F. PAUSS, M. PEDACE, S. PENSOTTI, D. PERRET-GALLIX, B. PETERSEN, D. PICCOLO, F. PIERELLA, M. PIOPPI, P.A. PIROUE, E. PISTOLESI, V. PLYASKIN, M. POHL, V. POJIDAEV, J. POTHIER, D. PROKOFIEV, J. QUARTIERI, G. RAHAL-CALLOT, M.A.RAHAMAN, P. RAICS, N. RAJA, R. RAMELLI, P.G. RANCOITA, R. RANIERI, A. RASPEREZA, P. RAZIS, D. REN, M. RESCIGNO, S. REUCROFT, S. RIEMANN, K. RILES, B.P. ROE, L. ROMERO, A. ROSCA, C. ROSEMANN, C. ROSENBLECK, S. ROSIER-LEES, S. ROTH, J.A. RUBIO, G. RUGGIERO, H. RYKACZEWSKI, A. SAKHAROV, S. SAREMI, S. SARKAR, J. SALICIO, E. SANCHEZ, C. SCHAEFER, V. SCHEGELSKY, H. SCHOPPER, D.J. SCHOTANUS, C. SCIACCA, L. SERVOLI, S. SHEVCHENKO, N. SHIVAROV, V. SHOUTKO, E. SHUMILOV, A. SHVOROB, D. SON, C. SOUGA, P. SPILLANTINI, M. STEUER, D.P. STICKLAND, B. STOYANOV, A. STRAESSNER, K. SUDHAKAR, G. SULTANOV, L.Z. SUN, S. SUSHKOV, H. SUTER, J.D. SWAIN, Z. SZILLASI, X.W. TANG, P. TARJAN, L. TAUSCHER, L. TAYLOR, B. TELLILI, D. TEYSSIER, C. TIMMERMANS, SAMUEL C.C. TING, S.M. TING, S.C. TONWAR, J. TOTH, C. TULLY, K.L. TUNG, J. ULBRICHT, E. VALENTE, R.T. VAN DE WALLE, R. VASQUEZ, V. VESZPREMI, G. VESZTERGOMBI, I. VETLITSKI, D. VICINANZA, G. VIERTEL, S. VILLA, M. VIVARGENT, S. VLACHOS, I. VODOPIANOV, H. VOGEL, H. VOGT, I. VOROBIEV, A.A. VOROBYOV, M. WADHWA, Q. WANG, X.L. WANG, Z.M. WANG, M. WEBER, H. WILKENS, S. WYNHOFF, L. XIA, Z.Z. XU, J. YAMAMOTO, B.Z. YANG, C.G. YANG, H.J. YANG, M. YANG, S.C. YEH, AN. ZALITE, YU. ZALITE, Z.P. ZHANG, J. ZHAO, G.Y. ZHU, R.Y. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, M. ZOELLER, Achard, P, Adriani, O, Aguilar Benitez, M, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alviggi, M, Anderhub, H, Andreev, V, Anselmo, F, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Bajo, A, Baksay, G, Baksay, L, Baldew, S, Banerjee, S, Barczyk, A, Barillère, R, Bartalini, P, Basile, M, Batalova, N, Battiston, R, Bay, A, Becattini, F, Becker, U, Behner, F, Bellucci, L, Berbeco, R, Berdugo, J, Berges, P, Bertucci, B, Betev, B, Biasini, M, Biglietti, M, Biland, A, Blaising, J, Blyth, S, Bobbink, G, Böhm, A, Boldizsar, L, Borgia, B, Bottai, S, Bourilkov, D, Bourquin, M, Braccini, S, Branson, J, Brochu, F, Burger, J, Burger, W, Cai, X, Capell, M, Cara Romeo, G, Carlino, G, Cartacci, A, Casaus, J, Cavallari, F, Cavallo, N, Cecchi, C, Cembranos, J, Cerrada, M, Chamizo, M, Chang, Y, Chemarin, M, Chen, A, Chen, G, Chen, H, Chiefari, G, Cifarelli, L, Cindolo, F, Clare, I, Clare, R, Coignet, G, Colino, N, Costantini, S, de La Cruz, B, Cucciarelli, S, van Dalen, J, de Asmundis, R, Déglon, P, Debreczeni, J, Degré, A, Dehmelt, K, Deiters, K, della Volpe, D, Delmeire, E, Denes, P, Denotaristefani, F, de Salvo, A, Diemoz, M, Dierckxsens, M, Dionisi, C, Dittmar, M, Doria, A, Dova, M, Duchesneau, D, Duda, M, Echenard, B, Eline, A, El Hage, A, El Mamouni, H, Engler, A, Eppling, F, Extermann, P, Falagan, M, Falciano, S, Favara, A, Fay, J, Fedin, O, Felcini, M, Ferguson, T, Fesefeldt, H, Fiandrini, E, Field, J, Filthaut, F, Fisher, P, Fisher, W, Fisk, I, Forconi, G, Freudenreich, K, Furetta, C, Galaktionov, Y, Ganguli, S, Garcia Abia, P, Gataullin, M, Gentile, S, Giagu, S, Gong, Z, Grenier, G, Grimm, O, Gruenewald, M, Guida, M, Gupta, V, Gurtu, A, Gutay, L, Haas, D, Hatzifotiadou, D, Hebbeker, T, Hervé, A, Hirschfelder, J, Hofer, H, Hohlmann, M, Holzner, G, Hou, S, Hu, Y, Jin, B, Jones, L, de Jong, P, Josa Mutuberría, I, Kaur, M, Kienzle Focacci, M, Kim, J, Kirkby, J, Kittel, W, Klimentov, A, König, A, Kopal, M, Koutsenko, V, Kräber, M, Kraemer, R, Krüger, A, Kunin, A, Ladron de Guevara, P, Laktineh, I, Landi, G, Lebeau, M, Lebedev, A, Lebrun, P, Lecomte, P, Lecoq, P, Le Coultre, P, Le Goff, J, Leiste, R, Levtchenko, M, Levtchenko, P, Li, C, Likhoded, S, Lin, C, Lin, W, Linde, F, Lista, L, Liu, Z, Lohmann, W, Longo, E, Lu, Y, Luci, C, Luminari, L, Lustermann, W, Ma, W, Malgeri, L, Malinin, A, Maña, C, Mans, J, Martin, J, Marzano, F, Mazumdar, K, Mcneil, R, Mele, S, Merola, L, Meschini, M, Metzger, W, Mihul, A, Milcent, H, Mirabelli, G, Mnich, J, Mohanty, G, Muanza, G, Muijs, A, Musicar, B, Musy, M, Nagy, S, Natale, S, Napolitano, M, Nessi Tedaldi, F, Newman, H, Nisati, A, Novak, T, Nowak, H, Ofierzynski, R, Organtini, G, Pal, I, Palomares, C, Paolucci, P, Paramatti, R, Passaleva, G, Patricelli, S, Pattison, C, Paul, T, Pauluzzi, M, Paus, C, Pauss, F, Pedace, M, Pensotti, S, Perret Gallix, D, Petersen, B, Piccolo, D, Pierella, F, Pioppi, M, Piroué, P, Pistolesi, E, Plyaskin, V, Pohl, M, Pojidaev, V, Pothier, J, Prokofiev, D, Quartieri, J, Rahal Callot, G, Rahaman, M, Raics, P, Raja, N, Ramelli, R, Rancoita, P, Ranieri, R, Raspereza, A, Razis, P, Ren, D, Rescigno, M, Reucroft, S, Riemann, S, Riles, K, Roe, B, Romero, L, Rosca, A, Rosemann, C, Rosenbleck, C, Rosier Lees, S, Roth, S, Rubio, J, Ruggiero, G, Rykaczewski, H, Sakharov, A, Saremi, S, Sarkar, S, Salicio, J, Sanchez, E, Schäfer, C, Schegelsky, V, Schopper, H, Schotanus, D, Sciacca, C, Servoli, L, Shevchenko, S, Shivarov, N, Shoutko, V, Shumilov, E, Shvorob, A, Son, D, Souga, C, Spillantini, P, Steuer, M, Stickland, D, Stoyanov, B, Straessner, A, Sudhakar, K, Sultanov, G, Sun, L, Sushkov, S, Suter, H, Swain, J, Szillasi, Z, Tang, X, Tarjan, P, Tauscher, L, Taylor, L, Tellili, B, Teyssier, D, Timmermans, C, Ting, S, Tonwar, S, Tóth, J, Tully, C, Tung, K, Ulbricht, J, Valente, E, van de Walle, R, Vasquez, R, Veszpremi, V, Vesztergombi, G, Vetlitsky, I, Vicinanza, D, Viertel, G, Villa, S, Vivargent, M, Vlachos, S, Vodopianov, I, Vogel, H, Vogt, H, Vorobiev, I, Vorobyov, A, Wadhwa, M, Wang, Q, Wang, X, Wang, Z, Weber, M, Wilkens, H, Wynhoff, S, Xia, L, Xu, Z, Yamamoto, J, Yang, B, Yang, C, Yang, H, Yang, M, Yeh, S, Zalite, A, Zalite, Y, Zhang, Z, Zhao, J, Zhu, G, Zhu, R, Zhuang, H, Zichichi, A, Zimmermann, B, Zöller, M, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), and L3
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Nuclear and High Energy Physics ,Particle physics ,Photon ,L3,CERN-LEP-L3 ,Electron–positron annihilation ,Ciencias Físicas ,FOS: Physical sciences ,Context (language use) ,ddc:500.2 ,01 natural sciences ,Standard Model ,High Energy Physics - Experiment ,Nuclear physics ,Momentum ,purl.org/becyt/ford/1 [https] ,High Energy Physics - Experiment (hep-ex) ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,brane fluctuations ,010306 general physics ,Nuclear Experiment ,Ciencias Exactas ,Bhabha scattering ,Physics ,Missing energy ,010308 nuclear & particles physics ,monte-carlo program ,w-pair production ,e(+)e(-) collisions ,missing energy ,l3 experiment ,final-states ,bhabha scattering ,single-photon ,root-s ,dimensions ,Física ,branons ,LEP ,purl.org/becyt/ford/1.3 [https] ,Astronomía ,High Energy Physics::Experiment ,Brane ,FIS/04 - FISICA NUCLEARE E SUBNUCLEARE ,Particle Physics - Experiment ,CIENCIAS NATURALES Y EXACTAS - Abstract
We search, in the context of extra-dimension scenarios, for the possible existence of brane fluctuations, called branons. Events with a single photon or a single Z-boson and missing energy and momentum collected with the L3 detector in e+e− collisions at centre-of-mass energies √2 = 189–209 GeV are analysed. No excess over the Standard Model expectations is found and a lower limit at 95% confidence level of 103 GeV is derived for the mass of branons, for a scenario with small brane tensions. Alternatively, under the assumption of a light branon, brane tensions below 180 GeV are excluded., Facultad de Ciencias Exactas
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- 2004
32. A long-term aging study of honeycomb drift tubes for the HERA-B Outer Tracker using a circulated and purified CF4 gas mixture
- Author
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B. Schmidt, Klaus Dehmelt, Marcus Hohlmann, and M. Capeans
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Physics ,Nuclear and High Energy Physics ,business.industry ,Nuclear engineering ,Detector ,Plasma ,Particle detector ,Honeycomb structure ,Outgassing ,Optics ,Measuring instrument ,Honeycomb ,business ,Instrumentation ,HERA-B - Abstract
The Outer Tracker of HERA-B uses a gas mixture containing CF 4 to obtain high electron drift velocities. The high cost of this gas makes it necessary to circulate the gas mixture which must then be purified to avoid accumulation of air and pollutants. However, the usage of gas purifiers poses the danger of outgassing pollutants from the purifiers themselves into the gas stream. Purifiers could also be attacked chemically by the aggressive products from the cracking of CF 4 molecules in the plasma avalanches of the detector. This could potentially release further harmful pollutants into the gas stream. To test for such effects, a long-term irradiation study of about 3000 h was carried out with the honeycomb drift tubes that are used in the Outer Tracker. This provided a check of the long-term stability of the gas purifiers before putting them into operation for the full-size detector. We report on the experimental setup, procedures and the results obtained.
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- 2003
- Full Text
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33. Inclusive V production cross sections from 920 GeV fixed target proton-nucleus collisions
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Imma Riu, F. Sanchez, Hernan Wahlberg, L. Garrido, B. Bobchenko, N. Tesch, Brian Petersen, I. Kisel, C. Stegmann, C. B. Krauss, Mikhail Zavertyaev, O. Barsukova, J. L. Rosen, O. Steinkamp, Ulrich Werthenbach, D. Ryzhikov, F. Klefenz, D. Dujmic, I. Belotelov, H. Kapitza, H. Thurn, Yu. Pavlenko, P. Kreuzer, Jenny Ivarsson, Pietro Faccioli, M. Beck, I. Golutvin, V. Aushev, R. Wurth, T. Perschke, Mauro Villa, D. Broemmelsiek, M. Chmeissani, H. Sun, J. Yang, A. Michetti, Paul Edmund Karchin, A. Stanovnik, H. Fleckenstein, M. Ouchrif, S. Korpar, J. Luidemann, M. Spahn, K. Hofner, A. Kaoukher, Helmut Wolters, V. Saveliev, L. Sozuer, V. Vagnoni, J. Chamanina, A. Bogatyrev, Farid Ould-Saada, Kwong Lau, B. Lewende, M. Mevius, Yu.V. Mikhailov, L. Seybold, Ramon Miquel, J. D. Hansen, Søren Schmidt, Peter Robmann, Wolfgang Wagner, R. van Staa, R Stdenis, S. Hausmann, R. Chistov, D. Samtleben, B. Lomonosov, K. Berkhan, V. Rusinov, V. Eiges, M. Medinnis, D. C. Goulart, Dmitry Emeliyanov, S. Schaller, Z. Ke, I. Belyaev, A. Zhelezov, Samim Erhan, W. Ruckstuhl, A. Moshkin, V. Popov, Werner Hofmann, P.E. Schlein, J. Glass, R. F. Schwitters, Valery Pugatch, S. Essenov, J.J. Wang, D. Wegener, J. Rieling, Roberto Spighi, R. Mankel, A. Lange, D. Krücker, S. Nowak, D. Pose, J. Bastos, A. Belkov, Hyun-Chul Kim, N.N. Karpenko, W. Schmidt-Parzefall, Umberto Marini Bettolo Marconi, S. Steinbeck, V. Souvorov, A. Schreiner, Thomas Hamacher, B. Dolgoshein, W. Gradl, M. A. Pleier, C. Borgmeier, A. S. Schwarz, K. T. Knöpfle, B. Schwenninger, K. E. K. Gerndt, Antonio Zoccoli, Y. Guilitsky, Y. Vassiliev, U. Straumann, Yu.T. Kiryushin, I. Gorbounov, F. Saadi-Ludemannm, M. Dressel, M. Poli, D. Peralta, T. Lohse, I. Negri, M. Capeans, A. Bertin, Antonio Sbrizzi, Z. Zheng, S. Karabekyan, Y. Bagaturia, S. Ramachandran, G. Leffers, A. Vitale, I. Vukotic, S. Semenov, J. Zweizig, K. M. Danielsen, Benedetto Giacobbe, A. Gellrich, X. Dong, S. Shuvalov, Reinhard Männer, B. Schwingenheuer, B. Fominykh, F. Khasanov, M. Nörenberg, V. Rybnikov, M. Funcke, M. Walter, Nicola Semprini-Cesari, M. Bruinsma, M. Bargiotti, P. Pakhlov, C. van Eldik, H. Deppe, David Gascon, M. Hildebrandt, Kendall Reeves, I. C. Legrand, Vasco Amaral, S. Fourletov, M. Rietz, J. Shiu, O. Gouchtchine, J. Pyrlik, S. Solunin, W. Fallot-Burghardt, S. Keller, S. F. Takach, Christian Bauer, T. Glebe, Andrej Gorišek, D. Galli, H. Schröder, M. Ispiryan, M. Titov, G. Bohm, V. Bassetti, T. Fuljahn, Hermann Kolanoski, L. Matchikhilian, F Sciacca, Klaus Dehmelt, S. Gradl, R. Pernack, S. Issever, H. Itterbeck, V. Kochetkov, T. Zeuner, D. Skrk, I. Abt, B. X. Chen, M. Sang, P. Truöl, W. Hulsbergen, R. Baghshetsyan, P. J. Weyers, R. Wanke, J. Spengler, B. Schmidt, K. Ehret, Yuriy Pylypchenko, R. Pestotnik, Y. Jia, T. Buran, R. Loke, F. Sun, Ulrich Husemann, J. Flammer, M. Böcker, A. Pose, C. Jiang, A. Spiridonov, A. Christensen, M. Symalla, R. Eckmann, A. Golutvin, S. J. Aplin, João Carvalho, U. Trunk, M. S. Atiya, I. Tsakov, S. Nam, Olga Igonkina, V. Balagura, R. Muresan, M. Feuerstack-Raible, Y. Wang, C. Hast, G. Zech, A. Mohapatra, H. B. Dreis, M. Buchler, Mogens Dam, I. Arino, R. Mizuk, U. Schwanke, Laura Fabbri, S. De Castro, M. Danilov, P. Krizan, S. Masciocchi, A. H. Walenta, D. Goloubkov, K. Riechmann, B. Moshous, A. Lanyov, G. Medin, Z. Zhu, H. Deckers, A. Soldatov, T. Zivko, Marcus Hohlmann, A. Arefiev, F. Ratnikov, I. Tikhomirov, H. Albrecht, R. Zimmermann, I. Massa, A. Garcia, R. F. Harr, M. T. N. P. de Vera, T. Oest, D. Ressing, V. Egorytchev, A. Oliveira, A. Wurz, M. Bräuer, C. Rothe, H. D. Schultz, António Amorim, Peter Buchholz, T. Kvaratskheliia, Th.S. Bauer, T. Walter, M. Starič, A. Somov, M. Adams, E. Sexauer, M. Negodaev, Yang Liu, A. J. Schwartz, D. Stieler, Jose M Hernandez, M. Bruschi, M. Piccinini, A. Hoscher, G.J. Wagner, I. Siccama, M. Schmelling, S. Barsuk, S. Spratte, F. Eisele, M. Capponi, T. Hott, P. Conde, T. Jagla, S. Somov, Yu. Zaitsev, C. Cruse, C. Padilla, S. Xella-Hansen, A. Abyzov, and U. Uwer
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Physics ,Physics and Astronomy (miscellaneous) ,Proton ,010308 nuclear & particles physics ,Sigma ,HERA ,Lambda ,7. Clean energy ,01 natural sciences ,Atomic mass ,Nuclear physics ,0103 physical sciences ,High Energy Physics::Experiment ,Atomic physics ,Nuclear Experiment ,Nucleon ,010303 astronomy & astrophysics ,Engineering (miscellaneous) ,HERA-B ,Bar (unit) - Abstract
Inclusive differential cross sections dsigma(pA)/dx(F) and dsigma(pA)/dp(t)(2) for the production of K-S(0), Lambda, and (U) over bar particles are measured at HERA in proton-induced reactions on C, Al, Ti, and W targets. The incident beam energy is 920 GeV, corresponding to roots = 41.6 GeV in the proton-nucleon system. The ratios of differential cross sections dsigma(pA)(K-S(0))/dsigma(pA)(Lambda) and dsigma(pA)((U) over bar)/dsigma(pA) (Lambda) are measured to be 6.2 +/- 0.5 and 0.66 +/- 0.07, respectively, for x(F) approximate to -0.06. No significant dependence upon the target material is observed. Within errors, the slopes of the transverse momentum distributions da,Ald t also show no significant dependence upon the target material. The dependence of the extrapolated total cross sections sigma(pA) on the atomic mass A of the target material is discussed, and the deduced cross sections per nucleon sigma(pN) are compared with results obtained at other energies.
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- 2003
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34. J/psi production via chi(c) decays in 920 GeV pA interactions
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Samim Erhan, P. Kreuzer, M. Noerenberg, M. T. Nunez Pardo de Vera, R. Muresan, B. Schmidt, L. Garrido, H. B. Dreis, K. Berkhan, T. Hott, A. Stanovnik, U. Uwer, Sebastian Nowak, V. Rusinov, D. Wegener, R. Mizuk, C. Borgmeier, W. Gradl, M. Walter, D. Ryzhikov, Peter Robmann, M. Hildebrandt, S. Schmidt, B. A. Petersen, V. Saveliev, O. Gouchtchine, R. vanStaa, K. Riechmann, J. Yang, Pietro Faccioli, I. Massa, V. Aushev, J.D. Hansen, M. Spahn, C. Cruse, H. Wahlberg, D. Dujmic, J. Glaess, G. Bohm, C. Hast, Hermann Kolanoski, M. Dressel, A. Somov, G. Medin, J. Chamanina, J. Zweizig, P.E. Schlein, K. M. Danielsen, R. F. Schwitters, R. Eckmann, P. Conde, D. Kruecker, Igor Golutvin, M. Boecker, T. Jagla, S. Schaller, A. Moshkin, R. Wanke, A. Zhelezov, Yu. Zaitsev, Y. Pylypchenko, O. Steinkamp, T. Zivko, L. Sozuer, F. Sanchez, Jenny Ivarsson, M. Capponi, D. Goloubkov, K. T. Knöpfle, Kwong Lau, A. Gellrich, W. Schmidt-Parzefall, R. Spighi, Thomas Hamacher, Y. Vassiliev, I. Negri, G. Leffers, Rok Pestotnik, M. Symalla, S. J. Aplin, H. Schroeder, S. Essenov, A. Michetti, Paul Edmund Karchin, Y. Guilitsky, S. Steinbeck, S. Solunin, W. Fallot-Burghardt, U. Werthenbach, Yu.V. Mikhailov, A. Kaoukher, G.J. Wagner, B. Lewendel, David Gascon, S. F. Takach, M. Titov, T. Zeuner, A. H. Walenta, Y. Wang, J. Spengler, A. Belkov, L. Matchikhilian, O. Barsukova, S. Karabekyan, R Stdenis, U. Trunk, A. J. Schwartz, D. Stieler, Jose M Hernandez, I. Siccama, I. Abt, H. Itterbeck, Ramon Miquel, R. Baghshetsyan, D. C. Goulart, D. Galli, V. Popov, Werner Hofmann, Imma Riu, Mikhail Zavertyaev, B. Dolgoshein, V. Kochetkov, Ch. Rothe, B. Schwenninger, B. Giacobbe, S. Shuvalov, B. Bobchenko, M. Capeans, Yu. Pavlenko, Hyun-Chul Kim, A. Arefiev, S. De Castro, A. Wurz, Yu.T. Kiryushin, Laura Fabbri, L. Seybold, A. Lanyov, F. Klefenz, B. Lomonosov, V. Eiges, M. Feuerstack-Raible, C. Jiang, A. Spiridonov, V. Rybnikov, A. Golutvin, C. Padilla, W. Ruckstuhl, F. Ratnikov, I. Tikhomirov, S. Nam, Nicola Semprini-Cesari, Mauro Villa, M. Schmelling, M. A. Pleier, K. Höpfner, A. Christensen, Y. Bagaturia, Christian Bauer, D. Peralta, V. Bassetti, R. Wurth, B. Moshous, U. Schwanke, P. Truöl, C. B. Krauss, T. Oest, S. Barsuk, Samo Korpar, M. Poli, M. Adams, N. Tesch, U. Marconi, Fouzia Saadi-Lüdemann, Antonio Zoccoli, Jian Wang, M. Chmeissani, João Carvalho, Antonio Sbrizzi, J. Lüdemann, S. Spratte, E. Sexauer, D. Ressing, F. Khasanov, Robert Harr, S. Hausmann, I. Vukotic, S. Xella-Hansen, A. Bogatyrev, M. Bruinsma, U. Husemann, M. Negodaev, Kendall Reeves, T. Glebe, S. Fourletov, V. Souvorov, J. Bastos, T. Buran, I. Kisel, M. Buchler, I. Belyaev, Maurizio Piccinini, Y. Goloubkov, A. Gorisek, Dmitry Emeliyanov, T. Perschke, I. Tsakov, S. Gradl, A. Schreiner, S. Ramachandran, S. Keller, Vasco Amaral, X. Chen, F Sciacca, Klaus Dehmelt, Mogens Dam, X. Dong, R. Pernack, S. Issever, M. Sang, A. S. Schwarz, Th. S. Bauer, J. L. Rosen, A. Bertin, K. Ehret, N.N. Karpenko, D. Broemmelsiek, P. J. Weyers, R. Loke, K. E. K. Gerndt, Yunpeng Liu, Peter Buchholz, B. Schwingenheuer, A. Pose, W. Hulsbergen, Y. Jia, Z. Zheng, Marco Bruschi, A. Holscher, T. Walter, Thomas Lohse, J. Pyrlik, F. Eisele, A. Soldatov, Marcus Hohlmann, S. Somov, M. Ispiryan, J. Flammer, M. Bargiotti, B. Fominykh, Helmut Wolters, Farid Ould-Saada, M. Ouchrif, I. Arino, Wolfgang Wagner, M. Beck, Olga Igonkina, R. Zimmermann, P. Krizan, V. Balagura, H. Deckers, M. Danilov, I. Gorbounov, G. Zech, A. Mohapatra, T. Kvaratskheliia, R. Mankel, M. Funcke, I. C. Legrand, H. Albrecht, M. Starič, D. Skrk, V. Egorytchev, A. Oliveira, A. Lange, D. Pose, M. Braeuer, Mike Medinnis, C. van Eldik, Z. Ke, H. Deppe, J. Rieling, H. D. Schultz, Vincenzo Vagnoni, M. Rietz, C. Stegmann, A. Vitale, S. Semenov, António Amorim, T. Fuljahn, A. Garcia, R. Maenner, M. Mevius, H. Fleckenstein, R. Chistov, D. Samtleben, I. Belotelov, H. Kapitza, H. Thurn, Valery Pugatch, M. S. Atiya, S. Masciocchi, Z. Zhu, Geometry, (Astro)-Particles Physics, Mathematical Analysis, and Business Web and Media
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Physics ,Nuclear and High Energy Physics ,Particle physics ,010308 nuclear & particles physics ,01 natural sciences ,7. Clean energy ,High Energy Physics - Experiment ,Nuclear physics ,0103 physical sciences ,Radiative transfer ,High Energy Physics::Experiment ,010306 general physics ,Nuclear Experiment ,HERA-B - Abstract
Using data collected by the HERA-B experiment, we have measured the fraction of J\psi's produced via radiative chi_c decays in interactions of 920 GeV protons with carbon and titanium targets. We obtained R_{\chi_c} = 0.32 \pm 0.06_{stat} \pm 0.04_{sys} for the fraction of J\psi from chi_c decays averaged over proton-carbon and proton-titanium collisions. This result is in agreement with previous measurements and is compared with theoretical predictions., Comment: 16 pages, 5 figs
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- 2003
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35. Measurement of the $b\overline{b}$ production cross section in 920 GeV fixed-target proton-nucleus collisions
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R. Spighi, Dmitry Emeliyanov, H. Fleckenstein, Jian Wang, R. van Staa, S. Hausmann, Y. Pylypchenko, T. Glebe, Antonio Zoccoli, R. Chistov, D. Samtleben, I. Siccama, Imma Riu, C. B. Krauss, B. Bobchenko, A. Hoscher, T. Zeuner, I. C. Legrand, W. Hulsbergen, Y. Jia, Z. Zheng, J. Flammer, R. Baghshetsyan, A. Bogatyrev, D. Broemmelsiek, Olga Igonkina, K. E. K. Gerndt, D. Skrk, Y. Vassiliev, M. Hildebrandt, V. Balagura, J. Bastos, G. Zech, A. Mohapatra, A. Belkov, Valery Pugatch, M. Bräuer, G.J. Wagner, H. Kapitza, M. A. Pleier, S. Gradl, A. Schreiner, Maurizio Piccinini, H. Thurn, Sebastian Nowak, V. Rusinov, Th. S. Bauer, B. X. Chen, R. Mizuk, V. Souvorov, T. Buran, D. Wegener, W. Gradl, S. Essenov, L. Seybold, Søren Schmidt, K. Riechmann, R. Pernack, S. Issever, S. Karabekyan, J. Rosen, Z. Ke, B. Lomonosov, J. Rieling, V. Eiges, H. Albrecht, Vincenzo Vagnoni, P. J. Weyers, R. Loke, S. Somov, M. Ouchrif, H. Wahlberg, M. Böcker, A. Pose, I. Belyaev, A. Lange, K. M. Danielsen, Jenny Ivarsson, M. Capponi, M. Atiya, V. Amaral, I. Massa, A. Abyzov, T. Oest, G. Medin, D. Galli, F. Eisele, Hyun-Chul Kim, Samim Erhan, T. Zivko, U. Marconi, S. Masciocchi, D. Pose, M. Symalla, S. J. Aplin, F. Sanchez, C. van Eldik, Marco Bruschi, H. Sun, A. Michetti, Paul Edmund Karchin, H. Deppe, A. Kaoukher, W. Ruckstuhl, D. Peralta, Z. Zhu, B. Moshous, Peter Robmann, S. De Castro, I. Vukotic, V. Egorytchev, A. Oliveira, M. Rietz, A. Arefiev, P. Kreuzer, J. Shiu, S. Xella-Hansen, David Gascon, U. Schwanke, Ramon Miquel, C. Rothe, H. D. Schultz, H. B. Dreis, K. Berkhan, T. Hott, Peter E. Schlein, J. Luidemann, Y. Wang, C. Stegmann, A. Vitale, Andrej Gorišek, A. Bertin, M. Walter, S. Semenov, C. Borgmeier, M. Poli, Helmut Wolters, Farid Ould-Saada, T. Fuljahn, L. Garrido, F. Ratnikov, I. Tikhomirov, C. Jiang, O. Barsukova, A. Spiridonov, A. Stanovnik, O. Gouchtchine, S. Shuvalov, F. Klefenz, Ulrich Werthenbach, D. Ryzhikov, Wolfgang Wagner, A. Christensen, Mike Medinnis, O. Steinkamp, S. Steinbeck, J. Glass, R. F. Schwitters, R. Pestotnik, M. T. N. P. de Vera, Robert Harr, V. Saveliev, G. Bohm, M. Spahn, Hermann Kolanoski, B. Schwingenheuer, Nicola Semprini-Cesari, M. Schmelling, Pietro Faccioli, V. Aushev, Y. Guilitsky, B. Dolgoshein, M. Capeans, J. Yang, R. Wanke, F. Sun, M. Mevius, Christian Bauer, Laura Fabbri, F. Saadi-Ludemannm, Thomas Hamacher, Antonio Sbrizzi, C. Padilla, U. Uwer, I. Belotelov, M. Nörenberg, T. Perschke, H. Schröder, A. Wurz, J. Zweizig, S. F. Takach, J. Chamanina, M. Titov, J. D. Hansen, X. Dong, B. A. A. Petersen, Mogens Dam, L. Sozuer, K. Hofner, P. Krizan, D. Goloubkov, Y. Bagaturia, I. Negri, G. Leffers, S. Barsuk, M. Beck, M. Bargiotti, B. Fominykh, S. Solunin, A. Soldatov, F Sciacca, Marcus Hohlmann, Klaus Dehmelt, W. Schmidt-Parzefall, W. Fallot-Burghardt, M. Ispiryan, D. Dujmic, I. Tsakov, L. Matchikhilian, S. Spratte, D. Ressing, R. Zimmermann, H. Itterbeck, V. Kochetkov, R. Eckmann, P. Conde, Igor Golutvin, T. Jagla, A. Garcia, N. N. Karpenko, A. Amorim, A. Moshkin, T. Walter, Ulrich Husemann, I. Arino, João Carvalho, Yu. Zaitsev, D. Krucker, H. Deckers, M. Danilov, C. Cruse, R Stdenis, M. Dressel, Peter Buchholz, A. H. Walenta, I. Gorbounov, R. Mankel, Kwong Lau, A. Gellrich, M. Funcke, T. Kvaratskheliia, R. Wurth, M. Chmeissani, B. Lewende, S. Ramachandran, A. S. Schwarz, R. Manner, A. J. Schwartz, A. Golutvin, S. Nam, M. Bruinsma, P. Pakhlov, Kendall Reeves, M. Sang, K. Ehret, I. Kisel, M. Buchler, F. Khasanov, Thomas Lohse, S. Fourletov, S. Keller, I. Abt, J. Spengler, U. Trunk, A. Lanyov, A. Zhelezov, K. T. Knöpfle, Yang Liu, U. Straumann, D. Stieler, Jose M Hernandez, B. Giacobbe, M. Adams, N. Tesch, E. Sexauer, Yu.V. Mikhailov, M. Negodaev, Mikhail Zavertyaev, D. C. Goulart, M. Starič, A. Somov, Yu. Pavlenko, S. Schaller, V. Popov, Werner Hofmann, J. Pyrlik, B. Schwenninger, Mauro Villa, Samo Korpar, Yu.T. Kiryushin, M. Feuerstack-Raible, V. Rybnikov, V. Bassetti, P. Truöl, B. Schmidt, R. Muresan, C. Hast, Geometry, (Astro)-Particles Physics, Mathematical Analysis, and Business Web and Media
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Physics ,Particle physics ,Physics and Astronomy (miscellaneous) ,Proton ,010308 nuclear & particles physics ,Nuclear Theory ,High Energy Physics::Phenomenology ,Sigma ,HERA ,01 natural sciences ,Bottom quark ,High Energy Physics - Experiment ,Nuclear physics ,Cross section (physics) ,0103 physical sciences ,High Energy Physics::Experiment ,Production (computer science) ,Nuclear Experiment ,010306 general physics ,Engineering (miscellaneous) ,HERA-B ,Bar (unit) - Abstract
Using the HERA-B detector, the b-bbar production cross section has been measured in 920 GeV proton collisions on carbon and titanium targets. The b-bbar production was tagged via inclusive bottom quark decays into J/psi, by exploiting the longitudinal separation of J/psi->ll decay vertices from the primary proton-nucleus interaction. Both $e^+e^-$ and $\mu^+\mu^-$ channels have been reconstructed and the combined analysis yields the cross section $\sigma(b \bar b) = 32 ^{+14}_{-12} (stat) ^{+6}_{-7} (sys) nb/nucleon$., Comment: 22 pages, 10 Postscript figures
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- 2003
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36. Triple GEM tracking detectors for COMPASS
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Soumen Paul, Frank Simon, M Altunbas, L. Ropelewski, B. Grube, A. Placci, L. Schmitt, Klaus Dehmelt, J. Ehlers, S. Kappler, B. Ketzer, Fabio Sauli, J.M. Friedrich, and Igor Konorov
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Physics ,Nuclear and High Energy Physics ,Spectrometer ,Physics::Instrumentation and Detectors ,business.industry ,Detector ,Tracking (particle physics) ,Nuclear physics ,Optics ,Nuclear Energy and Engineering ,Compass ,Nuclear electronics ,Gas electron multiplier ,Detectors and Experimental Techniques ,Electrical and Electronic Engineering ,business ,Image resolution ,Beam (structure) - Abstract
The small area tracker of COMPASS, a high-luminosity fixed target experiment at CERN's SPS, includes a set of 20 large-size ($31\times 31\,\cm^2$) Gas Electron Multiplier (GEM) detectors. Based on gas amplification in three cascaded GEM foils, these devices permit to obtain high gain and good spatial resolution even at very high particle fluxes. A two-coordinate projective readout yields, for each track, highly correlated signal amplitudes on both projections, allowing to resolve multiple hits in high occupancy regions close to the central deactivated area of $5\,\cm$ diameter. At the same time the material exposed to the beam is minimized. Splitting the amplification in three cascaded stages permits to achieve a gain of $\sim 8000$, necessary for efficient ($>98\%$) detection of minimum ionizing particles on both coordinates, already at relatively moderate voltages across individual GEM foils. As a consequence, the probability of a gas discharge to occur when a heavily ionizing particle enters the detector volume, is reduced by more than an order of magnitude at a given gain compared to the initially foreseen double GEM structure. In conjunction with other strategies resulting from extensive R\&D on discharge phenomena, we were able to further reduce both the triggered by heavily ionizing particles entering the detector volume, this helped to drastically reduce both the energy and the probability of such breakdowns. In order to completely exclude permanent damage to the front-end chip by the rare event of a discharge fully propagating to the readout strips, an external electronic protection circuit is used. The operational characteristics of these detectors were examined both in the laboratory and in the beam, where a spatial resolution for minimum ionizing particles of $(46\pm 3)\,\mum$ and a time resolution of $\sim 15\,\ns$ were achieved. For the 2001 run of COMPASS, a total of 14 triple GEM detectors have been installed. First results from the commissioning phase in the high-intensity $\mu$ beam are presented.
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- 2002
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37. Construction, test and commissioning of the triple-gem tracking detector for compass
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S. Paul, A. Placci, M. van Stenis, Fabio Sauli, Klaus Dehmelt, M. Capeans, J. Ehlers, S. Kappler, Frank Simon, Cem Altunbas, R. De Oliveira, Apparao Gandi, L. Ropelewski, I. Konorov, B. Ketzer, and J.M. Friedrich
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Physics ,Nuclear and High Energy Physics ,Large Hadron Collider ,Physics::Instrumentation and Detectors ,business.industry ,Detector ,Tracking system ,Tracking (particle physics) ,Nuclear physics ,Nuclear electronics ,Compass ,Gas electron multiplier ,COMPASS experiment ,Detectors and Experimental Techniques ,business ,Instrumentation ,Computer hardware - Abstract
The Small Area Tracking system of the COMPASS experiment at CERN includes a set of 20 large area, fast position-sensitive Gas Electron Multiplier (GEM) detectors, designed to reliably operate in the harsh radiation environment of the experiment. We describe in detail the design, choice of materials, assembly procedures and quality controls used to manufacture the devices. The test procedure in the laboratory, the performance in test beams and in the initial commissioning phase in the experiment are presented and discussed.
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- 2002
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38. A large prototype of a time projection chamber for a linear collider detector
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Klaus Dehmelt
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Physics ,Nuclear and High Energy Physics ,Wire chamber ,Time projection chamber ,Physics::Instrumentation and Detectors ,Detector ,MicroMegas detector ,DESY ,Particle detector ,law.invention ,Nuclear physics ,law ,Gas electron multiplier ,Collider ,Instrumentation - Abstract
A Time Projection Chamber (TPC) is a candidate for the central tracker of the ILC detectors. TPCs based on Micropattern Gaseous Detectors (MPGD), described in the ILC Reference Design Report, have dimensions of 2.8–4 m in diameter and 3–4.6 m in length. They are to provide 200 space points with pad readout, along a particle track with the R φ spatial resolution of 100 μ m per row or better. The momentum resolution of δ ( 1 / pt ) ≤ 0.5 × 10 − 4 ( GeV / c ) − 1 is envisaged in the magnetic field of 3–4 T. To realize the excellent space point resolution of 100 μ m , a TPC with MPGD readout instead of the Multiwire Proportional Chamber (MWPC) readout is needed [1] . The MPGD under consideration are Gas Electron Multiplier (GEM) and Micromesh Gas detector (Micromegas). Both detectors are operated either with regular analog pad readout or with the digital TimePix readout. A Large Prototype (LP) of a TPC has been constructed, which has a diameter of about 750 mm and a length of about 600 mm and allows to measure tracks with up to 125 space points with pad readout. This prototype is fitting into a superconducting magnet, installed in a DESY test beam area and is exposed to 6 GeV electrons. A description of the setup as well as first beam results with the various readout options of the LP will be given.
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- 2010
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39. ePHENIX at eRHIC
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Klaus Dehmelt
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- 2013
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40. FLYSUB-Consortium Tracking and RICH Performance Evaluation
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Benedetto Di Ruzza, Robert Pak, Martin Purschke, Xinzhang Bai, Bob Azumoun, A. Deshpande, R. Majka, Jessie Twigger, C. L. Woody, Klaus Dehmelt, T. K. Hemmick, Kondo Gnanvo, Aiwu Zhang, Chao Gu, N. Smirnov, Marcus Hohlmann, Nilanga Liyanage, Vallary Bhopatkar, N. Feege, M. Blatnik, and A. Soha
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Computer science ,Nuclear engineering ,Systems engineering ,Tracking (particle physics) - Published
- 2013
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41. Cross section and double helicity asymmetry forηmesons and their comparison toπ0production inp+pcollisions ats=200 GeV
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Jiro Murata, Christian Klein-Boesing, Mate Csanad, Kazuya Aoki, Ron Soltz, Ming Liu, Yaroslav Berdnikov, Michael Tannenbaum, Zvi Citron, Vladislav Pantuev, Robert Newby, Itzhak Tserruya, Marisilvia Donadelli, Yuhei Morino, Tomáš Liška, Michael Reuter, David D'Enterria, Naohito SAITO, Klaus Dehmelt, Yuji Goto, David Silvermyr, Victor Riabov, Frank Ellinghaus, Kenneth Read, Susumu Oda, Wen-Chen Chang, Edward Hartouni, Tamas Csorgo, Paul Constantin, Sergey Fokin, Hiroaki Ohnishi, Shinya Sawada, Andrew Glenn, Deepali Sharma, Bruno Lenzi, Steve Skutnik, Michael Heffner, Aleksandr Berdnikov, Bhartendu K. Singh, Laurent Aphecetche, Jiangyong Jia, Sarah Campbell, Ryugo Hayano, Kiyoshi Tanida, Kenta Shigaki, and Osamu Jinnouchi
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Meson ,010308 nuclear & particles physics ,Hadron ,Parton ,01 natural sciences ,Helicity ,Gluon ,Distribution function ,Pion ,0103 physical sciences ,High Energy Physics::Experiment ,Production (computer science) ,Nuclear Experiment ,010306 general physics - Abstract
Measurements of double-helicity asymmetries in inclusive hadron production in polarized p+p collisions are sensitive to helicity-dependent parton distribution functions, in particular to the gluon helicity distribution, {Delta}g. This study focuses on the extraction of hte double-helicity asymmetry in {eta} production (p+p{yields}{eta}+X), the {eta} cross section, and the {eta}/{pi}{sup 0} cross section ratio. The cross section and ratio measurements provide essential input for the extraction of fragmentation functions that are needed to acess the helicity-dependent parton distribution functions.
- Published
- 2011
- Full Text
- View/download PDF
42. A Large TPC Prototype for an ILC Detector
- Author
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Klaus Dehmelt
- Subjects
Physics ,business.industry ,Detector ,business ,Computer hardware - Published
- 2010
- Full Text
- View/download PDF
43. A Large TPC Prototype with MPGD Readout: Status and Plans
- Author
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Behnke, T., Klaus Dehmelt, Matsuda, T., and Schade, P.
- Subjects
High Energy Physics - Experiment (hep-ex) ,Physics - Instrumentation and Detectors ,FOS: Physical sciences ,Instrumentation and Detectors (physics.ins-det) ,High Energy Physics - Experiment - Abstract
The use of a TPC in future collider experiments needs significant research and development. Within the EUDET program an infrastructure has been designed and built to allow the efficient testing of TPC prototypes under realistic conditions. The infrastructure consists of a test beam facility, located at DESY Hamburg, and a multi-purpose TPC field cage., Conference LCES 2008, Chicago
- Published
- 2009
44. MarlinTPC: A common software framework for TPC development
- Author
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S. Zimmermann, Thorsten Krautscheid, Peter Wienemann, Jason Abernathy, Jan Engels, Klaus Dehmelt, Jim Hunt, Martin Killenberg, Ralf Diener, Astrid Munnich, Adrian Vogel, and Martin Ummenhofer
- Subjects
business.industry ,Computer science ,Detector ,MicroMegas detector ,Software prototyping ,Modular design ,computer.software_genre ,Chip ,Software framework ,Electronics ,Projection (set theory) ,business ,computer ,Computer hardware - Abstract
MarlinTPC is a simulation, digitisation, reconstruction and analysis package for research and development on Time Projection Chambers. It is based on the modular Marlin framework for ILC detector development and on the LCIO event data model. The MarlinTPC package consists of more than 50 software modules, providing a flexible tool box for a large variety of TPC applications. It is designed to simulate and reconstruct data from TPCs equipped with conventional pad readout and different kinds of electronics (ADCs and TDCs), taking into account the particularities of micro pattern gas amplification (GEMs and Micromegas). Also upcoming pixellated readouts as the Timepix chip are supported.
- Published
- 2008
- Full Text
- View/download PDF
45. Design and Performance of the Alignment System for the CMS Muon Endcaps
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Xiaofeng Yang, Vladimir Sknar, G. Baksay, Klaus Dehmelt, Valery Andreev, Samir Guragain, M. Case, Oleg Prokofiev, Max Browngold, F. Feyzi, Duncan Carlsmith, D. P. Eartly, David Northacker, James Nugent Bellinger, Marcus Hohlmann, Valeri Sytnik, and Richard Loveless
- Subjects
Physics ,Large Hadron Collider ,business.industry ,Physics::Instrumentation and Detectors ,Instrumentation ,Detector ,Electrical engineering ,Solenoid ,Optics ,Magnet ,Physics::Accelerator Physics ,Detectors and Experimental Techniques ,business ,Compact Muon Solenoid ,Yoke ,Beam (structure) - Abstract
The alignment system for the CMS Muon Endcap detector employs several hundred sensors such as optical 1-D CCD sensors illuminated by lasers and analog distance- and tilt-sensors to monitor the positions of one sixth of 468 large Cathode Strip Chambers. The chambers mounted on the endcap yoke disks undergo substantial deformation on the order of centimeters when the 4T field is switched on and off. The Muon Endcap alignment system is required to monitor chamber positions with \mbox{75-200 $\mu$m} accuracy in the R$\phi$ plane, $\approx$400 $\mu$m in the radial direction, and $\approx$1 mm in the z-direction along the beam axis. The complete alignment hardware for one of the two endcaps has been installed at CERN. A major system test was performed when the 4T solenoid magnet was ramped up to full field for the first time in August 2006. We present the overall system design and first results on disk deformations, which indicate that the measurements agree with expectations.
- Published
- 2008
46. Measurement of hadron and lepton-pair production in e(+)e(-) collisions at root s=192-208 GeV at LEP
- Author
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B. L. Betev, Alexander Malinin, A. M. Cartacci, H. Milcent, C. H. Lin, V. Pojidaev, Peter H. Fisher, Luca Lista, Sabine Riemann, W. C. Fisher, R. Barillère, P. Lebrun, Jeremy Mans, P. Tarján, Dimitri Bourilkov, P. Spillantini, P. G. Rancoita, B. de laCruz, M. Pauluzzi, M. N. Kienzle-Focacci, A. Rosca, Aleandro Nisati, An. Zalite, N. Batalova, Guo-Ming Chen, J. G. Branson, G. Forconi, M. Pohl, D. P. Stickland, B. N. Jin, J. Casaus, S. Pensotti, Valery Schegelsky, Antonino Zichichi, H. El Mamouni, Lamberto Luminari, E. Fiandrini, Yuan-Hann Chang, I. Pal, F. L. Linde, G. Chiefari, Jozsef Toth, Gyorgy Vesztergombi, M. Pioppi, Luca Malgeri, H. Nowak, Adrian Biland, Maurizio Biasini, M. Lebeau, Yu. Galaktionov, P. Ladron de Guevara, Marta Felcini, L. Romero, Z. Z. Xu, A. Chen, J. Salicio, D. Ren, Davide Piccolo, R. Leiste, F. Behner, L. J. Gutay, S. N. Ganguli, S. Sarkar, U. Becker, G. Grenier, Francesco Becattini, H. Rykaczewski, Giovanni Organtini, J. Alcaraz, M. Bourquin, B. Echenard, S. V. Baldew, S. Reucroft, P. Achard, J. Debreczeni, J.M. LeGoff, Peter Raics, E. Delmeire, A. Degré, J. K. Kim, D. O. Prokofiev, Felicitas Pauss, A. De Salvo, H. Vogt, Y. S. Lu, F. J. Eppling, L. W. Jones, J. Mnich, P. LeCoultre, A. Shvorob, R. Ranieri, C. Souga, M. Rescigno, C. G. Yang, P. Bartalini, Kajari Mazumdar, H. J. Yang, M. Levtchenko, A. C. Kӧnig, X. D. Cai, S. M. Ting, Pierre Lecomte, Francesca Cavallari, Francesca Nessi-Tedaldi, Jasper Kirkby, M. A. Falagan, L. Bellucci, R. Vasquez, M. Basile, Oleg Fedin, J. Pothier, M. Kopal, R. Ofierzynski, John Swain, J. H. Field, S. Bottai, S. Banerjee, H. F. Chen, J. D. Burger, G. Rahal-Callot, N. Raja, X. L. Wang, Z. M. Wang, J. Zhao, Yu. Zalite, Marcus Hohlmann, I. Vodopianov, A. Engler, Harvey B Newman, B. Zimmermann, C. Dionisi, Nicola Cavallo, A. El Hage, K. Sudhakar, Werner Lustermann, Charles Timmermans, S. Likhoded, M. Musy, D. Duchesneau, B. Stoyanov, H. Suter, W. G. Ma, S. Wynhoff, A. Bajo, M. Dierckxsens, Pablo Garcia-Abia, Alain Hervé, A. Mihul, G. Alemanni, G. S. Muanza, P. de Jong, N. Shivarov, Claudio Luci, R. T. Van de Walle, S. Sushkov, G. Passaleva, Pierluigi Paolucci, Robert Clare, M. Capell, Konrad Deiters, G. B. Mohanty, Ren-Yuan Zhu, M. Gataullin, V. K. Gupta, J. P. Martin, M. Duda, K. Freudenreich, M. Biglietti, M. Pedace, Jean Fay, G. Ruggiero, H. S. Fesefeldt, A. Bay, Roberto Battiston, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, Alberto Aloisio, M. Steuer, M. Napolitano, E. Pistolesi, J.V. Allaby, A. Gurtu, C. Li, H. S. Chen, L. Servoli, S. Patricelli, S. C. Yeh, Gerjan Bobbink, B. Borgia, Alexander S. Sakharov, H. Anderhub, Gianpaolo Carlino, F. DeNotaristefani, D. Hatzifotiadou, Laszlo Boldizsar, M. T. Dova, G. Y. Zhu, E. Shumilov, Georgi Sultanov, J. Ulbricht, G. Baksay, G. Landi, Z. Szillasi, A. J.M. Muijs, C. Furetta, Simonetta Gentile, S. Rosier-Lees, L. Xia, Sándor Nagy, Jj Blaising, Sw. Banerjee, Manjit Kaur, L. Z. Sun, E. Eline, B. Tellili, A. Klimentov, M. A. Rahaman, D. Perret-Gallix, A. Lebedev, Dong-Chul Son, Michele Guida, A. Barczyk, V. Koutsenko, G. Cara Romeo, L. Baksay, Alessandra Doria, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, J. Hirschfelder, X. W. Tang, E. Valente, S. Cucciarelli, M. Chemarin, Stefano Giagu, R. BatRamellialova, C. Rosenbleck, S. Braccini, I. Clare, P. Berges, C. Maña, G. M. Chen, W. Kittel, P. A. Piroué, Luisa Cifarelli, Z. A. Liu, Claudia Cecchi, M. Chamizo, Frederic Brochu, M. W. Gruenewald, Mariagrazia Alviggi, R. de Asmundis, Z. F. Gong, G. Mirabelli, Tariq Aziz, V. Plyaskin, D. Teyssier, S. Saremi, Stefan Roth, C. Paus, G. Viertel, Klaus Dehmelt, I. Josa-Mutuberria, T. Novak, S. R. Hou, M. Wadhwa, D. J. Schotanus, I. Vetlitsky, An.A. Vorobyov, M. Kräber, M. Vivargent, J. Yamamoto, Christoph Rosemann, Alexei Raspereza, O. Adriani, Hans J. Vogel, P. Déglon, Speranza Falciano, R. Berbeco, Mingming Yang, C. Palomares, S. Costantini, Imad Baptiste Laktineh, Lucas Taylor, W. T. Lin, J. A. Rubio, A. Krüger, Zhiqing Zhang, Leonardo Merola, V. Shoutko, L. Tauscher, Crisostomo Sciacca, Marco Pieri, T. Azemoon, Marcos Cerrada, S. Rembeczki, S. Villa, A. Favara, B. P. Roe, Igor Vorobiev, Marcella Diemoz, P. Levtchenko, D. della Volpe, Panos A Razis, Marc Weber, A. Arefiev, R. R. McNeil, W. J. Burger, H. L. Zhuang, Arno Straessner, J. Berdugo, Michael Dittmar, G. Holzner, E. J. Sanchez, K. Riles, M. Zӧller, F. Marzano, G. Coignet, Egidio Longo, P. Jindal, T. Paul, S. Natale, S. Vlachos, A. Böhm, P. Extermann, Salvatore Mele, Christoph Schäfer, H. Hofer, K. L. Tung, Vladimir Andreev, R. Shevchenko, Riccardo Paramatti, A. Kunin, B. Z. Yang, W. J. Metzger, Peter Denes, D. Haas, Paolo Bagnaia, S. C. Blyth, Marco Meschini, Christopher George Tully, Wolfgang Lohmann, B. Bertucci, F. Anselmo, Nicanor Colino, F. Pierella, Federico Cindolo, S. C. Tonwar, Frank Filthaut, Thomas Ferguson, Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Natale, Sonia, Pohl, Martin, Straessner, Arno, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), L3, P., Achard, Aloisio, Alberto, Alviggi, Mariagrazia, Chiefari, Giovanni, DELLA VOLPE, Domenico, Merola, Leonardo, Napolitano, Marco, Patricelli, Sergio, Sciacca, Crisostomo, Lista, Luca, P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, A. ALOISIO, M.G. ALVIGGI, H. ANDERHUB, V.P. ANDREEV, F. ANSELMO, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, A. BAJO, G. BAKSAY, L. BAKSAY, S.V. BALDEW, S. BANERJEE, SW. BANERJEE, A. BARCZYK, R. BARILLÈRE, P. BARTALINI, M. BASILE, N. BATALOVA, R. BATTISTON, A. BAY, F. BECATTINI, U. BECKER, F. BEHNER, L. BELLUCCI, R. BERBECO, J. BERDUGO, P. BERGES, B. BERTUCCI, B.L. BETEV, M. BIASINI, M. BIGLIETTI, A. BILAND, J.J. BLAISING, S.C. BLYTH, G.J. BOBBINK, A. BÖHM, L. BOLDIZSAR, B. BORGIA, S. BOTTAI, D. BOURILKOV, M. BOURQUIN, S. BRACCINI, J.G. BRANSON, F. BROCHU, J.D. BURGER, W.J. BURGER, X.D. CAI, M. CAPELL, G. CARA ROMEO, G. CARLINO, A. CARTACCI, J. CASAUS, F. CAVALLARI, N. CAVALLO, C. CECCHI, M. CERRADA, M. CHAMIZO, Y.H. CHANG, M. CHEMARIN, A. CHEN, G. CHEN, G.M. CHEN, H.F. CHEN, H.S. CHEN, G. CHIEFARI, L. CIFARELLI, F. CINDOLO, I. CLARE, R. CLARE, G. COIGNET, N. COLINO, S. COSTANTINI, B. DE LA CRUZ, S. CUCCIARELLI, R. DE ASMUNDIS, P. DÉGLON, J. DEBRECZENI, A. DEGRÉ, K. DEHMELT, K. DEITERS, D. DELLA VOLPE, E. DELMEIRE, P. DENES, F. DE NOTARISTEFANI, A. DE SALVO, M. DIEMOZ, M. DIERCKXSENS, C. DIONISI, M. DITTMAR, A. DORIA, M.T. DOVA, D. DUCHESNEAU, M. DUDA, B. ECHENARD, A. ELINE, A. EL HAGE, H. EL MAMOUNI, A. ENGLER, F.J. EPPLING, P. EXTERMANN, M.A. FALAGAN, S. FALCIANO, A. FAVARA, J. FAY, O. FEDIN, M. FELCINI, T. FERGUSON, H. FESEFELDT, E. FIANDRINI, J.H. FIELD, F. FILTHAUT, P.H. FISHER, W. FISHER, G. FORCONI, K. FREUDENREICH, C. FURETTA, YU. GALAKTIONOV, S.N. GANGULI, P. GARCIA-ABIA, M. GATAULLIN, S. GENTILE, S. GIAGU, Z.F. GONG, G. GRENIER, O. GRIMM, M.W. GRUENEWALD, M. GUIDA, V.K. GUPTA, A. GURTU, L.J. GUTAY, D. HAAS, D. HATZIFOTIADOU, T. HEBBEKER, A. HERVÉ, J. HIRSCHFELDER, H. HOFER, M. HOHLMANN, G. HOLZNER, S.R. HOU, B.N. JIN, P. JINDAL, L.W. JONES, P. DE JONG, I. JOSA-MUTUBERRÍA, M. KAUR, M.N. KIENZLE-FOCACCI, J.K. KIM, J. KIRKBY, W. KITTEL, A. KLIMENTOV, A.C. KÖNIG, M. KOPAL, V. KOUTSENKO, M. KRÄBER, R.W. KRAEMER, A. KRÜGER, A. KUNIN, P. LADRON DE GUEVARA, I. LAKTINEH, G. LANDI, M. LEBEAU, A. LEBEDEV, P. LEBRUN, P. LECOMTE, P. LECOQ, P. LE COULTRE, J.M. LE GOFF, R. LEISTEA, M. LEVTCHENKO, P. LEVTCHENKO, C. LI, S. LIKHODED, C.H. LIN, W.T. LIN, F.L. LINDE, L. LISTA, Z.A. LIU, W. LOHMANN, E. LONGO, Y.S. LU, C. LUCI, L. LUMINARI, W. LUSTERMANN, W.G. MA, L. MALGERI, A. MALININ, C. MAÑA, J. MANS, J.P. MARTIN, F. MARZANO, K. MAZUMDAR, R.R. MCNEIL, S. MELE, L. MEROLA, M. MESCHINI, W.J. METZGER, A. MIHUL, H. MILCENT, G. MIRABELLI, J. MNICH, G.B. MOHANTY, G.S. MUANZA, A.J.M. MUIJS, M. MUSY, S. NAGY, S. NATALE, M. NAPOLITANO, F. NESSI-TEDALDI, S. NESTEROV, H. NEWMAN, A. NISATI, T. NOVAK, H. NOWAK, R. OFIERZYNSKI, G. ORGANTINI, I. PAL, C. PALOMARES, P. PAOLUCCI, R. PARAMATTI, G. PASSALEVA, S. PATRICELLI, T. PAUL, M. PAULUZZI, C. PAUS, F. PAUSS, M. PEDACE, S. PENSOTTI, D. PERRET-GALLIX, D. PICCOLO, F. PIERELLA, M. PIERI, M. PIOPPI, P.A. PIROUÉ, E. PISTOLESI, V. PLYASKIN, M. POHL, V. POJIDAEV, J. POTHIER, D. PROKOFIEV, G. RAHAL-CALLOT, M.A. RAHAMAN, P. RAICS, N. RAJA, R. RAMELLI, P.G. RANCOITA, R. RANIERI, A. RASPEREZA, P. RAZIS, S. REMBECZKI, D. REN, M. RESCIGNO, S. REUCROFT, S. RIEMANN, K. RILES, B.P. ROE, L. ROMERO, A. ROSCA, C. ROSEMANN, C. ROSENBLECK, S. ROSIER-LEES, S. ROTH, J.A. RUBIO, G. RUGGIERO, H. RYKACZEWSKI, A. SAKHAROV, S. SAREMI, S. SARKAR, J. SALICIO, E. SANCHEZ, C. SCHÄFER, H. SCHOPPER, D.J. SCHOTANUS, C. SCIACCA, L. SERVOLI, S. SHEVCHENKO, N. SHIVAROV, V. SHOUTKO, E. SHUMILOV, A. SHVOROB, D. SON, C. SOUGA, P. SPILLANTINI, M. STEUER, D.P. STICKLAND, B. STOYANOV, A. STRAESSNER, K. SUDHAKAR, G. SULTANOV, L.Z. SUN, S. SUSHKOV, H. SUTER, J.D. SWAIN, Z. SZILLASI, X.W. TANG, P. TARJAN, L. TAUSCHER, L. TAYLOR, B. TELLILI, D. TEYSSIER, C. TIMMERMANS, SAMUEL C.C. TING, S.M. TING, S.C. TONWAR, J. TÓTH, C. TULLY, K.L. TUNG, J. ULBRICHT, E. VALENTE, R.T. VAN DE WALLE, R. VASQUEZ, G. VESZTERGOMBI, I. VETLITSKY, G. VIERTEL, M. VIVARGENT, S. VLACHOS, I. VODOPIANOV, H. VOGEL, H. VOGT, I. VOROBIEV, A.A. VOROBYOV, M. WADHWA, Q. WANG, X.L. WANG, Z.M. WANG, M. WEBER, S. WYNHOFF, L. XIA, Z.Z. XU, J. YAMAMOTO, B.Z. YANG, C.G. YANG, H.J. YANG, M. YANG, S.C. YEH, AN. ZALITE, YU. ZALITE, Z.P. ZHANG, J. ZHAO, G.Y. ZHU, R.Y. ZHU, H.L. ZHUANG, A. ZICHICHI, and B. ZIMMERMANN AND M. ZÖLLER
- Subjects
Particle physics ,Photon ,Physics and Astronomy (miscellaneous) ,carlo event generator ,forward-backward asymmetries ,angle bhabha scattering ,monte-carlo ,cross-sections ,e+e annihilation ,l3 experiment ,final-states ,z-peak ,realistic approach ,Electron–positron annihilation ,Hadron ,FOS: Physical sciences ,ddc:500.2 ,7. Clean energy ,01 natural sciences ,Standard Model ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,ddc:530 ,010306 general physics ,Engineering (miscellaneous) ,Physics ,Luminosity (scattering theory) ,010308 nuclear & particles physics ,Scattering ,High Energy Physics::Phenomenology ,Pair production ,Experimental High Energy Physics ,High Energy Physics::Experiment ,Particle Physics - Experiment ,Lepton - Abstract
Hadron production and lepton-pair production in e+e- collisions are studied with data collected with the L3 detector at LEP at centre-of-mass energies sqrt{s}=192-208GeV. Using a total integrated luminosity of 453/pb, 36057 hadronic events and 12863 lepton-pair events are selected. The cross sections for hadron production and lepton-pair production are measured for the full sample and for events where no high-energy initial-state-radiation photon is emitted prior to the collisions. Lepton-pair events are further investigated and forward-backward asymmetries are measured. Finally, the differential cross sections for electron-positron pair-production is determined as a function of the scattering angle. An overall good agreement is found with Standard Model predictions., Dedicated to the memory of Dr. Stephan Wynhoff
- Published
- 2006
- Full Text
- View/download PDF
47. Z-boson production with two unobserved, back-to-back, hard photons at LEP
- Author
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J. K. Kim, Yu. Galaktionov, L. Romero, Alessandra Doria, J. Alcaraz, J. Mnich, M. Bourquin, X. L. Wang, A. Mihul, G. Alemanni, B. L. Betev, P. Achard, P. Tarján, Dimitri Bourilkov, G. Forconi, M. Pohl, M. Pauluzzi, P. Spillantini, S. C. Yeh, Jozsef Toth, A. El Hage, D. Ren, R. Ramelli, S. R. Hou, M. Wadhwa, D. J. Schotanus, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, Samuel C.C. Ting, B. Echenard, G. Passaleva, I. Josa-Mutuberria, M. Kräber, M. Musy, R. Berbeco, R. Leiste, S. Villa, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, A. De Salvo, V. Plyaskin, H. Milcent, G. Grenier, Igor Vorobiev, P. Levtchenko, Panos A Razis, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, M. Napolitano, T. Novak, P. Bartalini, J. Casaus, C. Dionisi, S. Reucroft, D. Duchesneau, H. S. Chen, L. Servoli, Z. A. Liu, Alexei Raspereza, S. Bottai, Harvey B Newman, Zhenyu Zhang, I. Pal, S. C. Blyth, Alexander Malinin, J. Debreczeni, A. Krüger, M. Rescigno, J. Berdugo, E. J. Sanchez, Marco Meschini, Pablo Garcia-Abia, Alain Hervé, A. Bay, W. C. Fisher, R. Vasquez, Lamberto Luminari, Francesca Cavallari, R. Barillère, John Swain, Georgi Sultanov, M. Vivargent, Pierluigi Paolucci, A. Rosca, C. G. Yang, J. Pothier, Yu. Zalite, G. Baksay, M. W. Gruenewald, Qiuwang Wang, S. Saremi, Stefan Roth, D. P. Stickland, Y. H. Chang, J. P. Martin, An. Zalite, Alexander S. Sakharov, G. Y. Zhu, S. V. Baldew, D. O. Prokofiev, E. Shumilov, C-Q. Li, P. Lebrun, V. K. Gupta, K. Sudhakar, Christopher George Tully, L. Xia, M. Aguilar-Benitez, O. Grimm, Herwig Schopper, J. M. Le Goff, J. Yamamoto, Christoph Rosemann, G. Landi, Jasper Kirkby, M. A. Falagan, N. Cavallo, C. Sciacca, Francesca Nessi-Tedaldi, L. Tauscher, Wesley James Metzger, Jeremy Mans, Claudia Cecchi, F. DeNotaristefani, J. D. Burger, Roberto Battiston, M. Zöller, J. A. Rubio, Pierre Lecomte, Wolfgang Lohmann, B. Bertucci, A. J.M. Muijs, G. Rahal-Callot, N. Raja, T. Azemoon, C. Paus, Gerjan Bobbink, Z. F. Gong, R. T. Van de Walle, Sw. Banerjee, B. Borgia, Manjit Kaur, J. Allaby, L. Merola, H. El Mamouni, M. T. Dova, F. Anselmo, J. Ulbricht, Nicanor Colino, P. Ladron de Guevara, G. Chiefari, S. Shevchenko, P. Berges, Werner Lustermann, Charles Timmermans, M. Dierckxsens, H. Suter, B. Tellili, Vladimir Andreev, Marcos Cerrada, M. Chemarin, W. Kittel, F. Behner, An.A. Vorobyov, Maurizio Biasini, Marta Felcini, C. Palomares, Guo-Ming Chen, G. Cara Romeo, G. M. Chen, Axel König, I. Clare, L. Baksay, O. Adriani, Imad Baptiste Laktineh, Francesco Becattini, Lucas Taylor, A. Bajo, F. L. Linde, S. Pensotti, Valery Schegelsky, N. Batalova, H. Rykaczewski, Giovanni Organtini, E. Valente, G. Ruggiero, A. Chen, Felicitas Pauss, Mingming Yang, H. J. Yang, Helmut Vogel, R. Ofierzynski, J. Salicio, G. S. Muanza, Peter Raics, S. Likhoded, Peter Denes, Jean Fay, Kajari Mazumdar, Marc Weber, S. Rosier-Lees, G. Mirabelli, X. D. Cai, Paolo Bagnaia, M. N. Kienzle-Focacci, P. Le Coultre, Riccardo Paramatti, Marcus Hohlmann, L. Z. Sun, A. Kunin, M. Lebeau, F. Pierella, M. Basile, Federico Cindolo, Egidio Longo, Ren-Yuan Zhu, G. Viertel, S. C. Tonwar, C. Furetta, Frank Filthaut, D. Haas, Jiawei Zhao, Thomas Ferguson, L. Bellucci, Z. M. Wang, M. Pedace, S. Sushkov, W. J. Burger, S. Costantini, C. Rosenbleck, Michael Dittmar, A. Gurtu, Peter H. Fisher, Gianpaolo Carlino, Hao-Ze Chen, B. Musicar, V. Veszpremi, Oleg Fedin, A. Zichichi, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, A. Favara, K. L. Tung, Aleandro Nisati, Marcella Diemoz, A. Böhm, E. Delmeire, Y. S. Lu, A. Shvorob, H. Anderhub, M. Levtchenko, J. H. Field, A. Matyja, Michele Guida, B. Stoyanov, M. Gataullin, S. Braccini, R. de Asmundis, I. Fisk, Simonetta Gentile, A. Klimentov, R. Ranieri, B. De La Cruz, P. Déglon, Speranza Falciano, A. Arefiev, R. R. McNeil, H. L. Zhuang, Arno Straessner, G. Holzner, K. Riles, F. Marzano, G. Coignet, M. Kopal, M. Steuer, Z. Szillasi, M. A. Rahaman, D. Perret-Gallix, V. Koutsenko, A. Barczyk, B. P. Roe, Adrian Biland, Subir Sarkar, C. Souga, F. Brochu, D. della Volpe, I. Vodopianov, A. Engler, S. Wynhoff, M. Capell, M. Biglietti, H. S. Fesefeldt, E. Pistolesi, P. Jindal, T. Paul, J. G. Branson, A. Lebedev, Dong-Chul Son, J. J. Blaising, J. Hirschfelder, S. Natale, Stefano Giagu, S. Patricelli, Davide Piccolo, S. N. Ganguli, Mariagrazia Alviggi, A. Degré, S. Vlachos, Klaus Dehmelt, I. Vetlitsky, D. Hatzifotiadou, Laszlo Boldizsar, M. Pioppi, L. J. Gutay, U. Becker, H. Vogt, F. J. Eppling, L. W. Jones, A. Eline, Luisa Cifarelli, M. Duda, K. Freudenreich, S. Cucciarelli, A. M. Cartacci, C. Maña, Z. Z. Xu, C. H. Lin, V. Pojidaev, V. Shoutko, B. Zimmermann, Luca Lista, Konrad Deiters, G. B. Mohanty, Alberto Aloisio, Willis Lin, Sabine Riemann, Sándor Nagy, X. W. Tang, P. A. Piroué, M. Chamizo, P. G. Rancoita, B. N. Jin, H. Nowak, Tariq Aziz, D. Teyssier, Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Natale, Sonia, Pohl, Martin, Straessner, Arno, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, P., Achard, Aloisio, Alberto, Alviggi, Mariagrazia, Chiefari, Giovanni, DELLA VOLPE, Domenico, Merola, Leonardo, Napolitano, Marco, Patricelli, Sergio, Sciacca, Crisostomo, Lista, Luca, P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, A. ALOISIO, M.G. ALVIGGI, H. ANDERHUB, V.P. ANDREEV, F. ANSELMO, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, A. BAJO, G. BAKSAY, L. BAKSAY, S.V. BALDEW, S. BANERJEE, SW. BANERJEE, A. BARCZYK, R. BARILLÈRE, P. BARTALINI, M. BASILE, N. BATALOVA, R. BATTISTON, A. BAY, F. BECATTINI, U.BECKER, F. BEHNER, L. BELLUCCI, R. BERBECO, J. BERDUGO, P. BERGES, B. BERTUCCI, B.L. BETEV, M. BIASINI, M. BIGLIETTI, A. BILAND, J.J. BLAISING, S.C. BLYTH, G.J. BOBBINK, A. BÖHM, L. BOLDIZSAR, B. BORGIA, S. BOTTAI, D. BOURILKOV, M. BOURQUIN, S. BRACCINI, J.G. BRANSON, F. BROCHU, J.D. BURGER, W.J. BURGER, X.D. CAI, M. CAPELL, G. CARA ROMEO, G. CARLINO, A. CARTACCI, J. CASAUS, F. CAVALLARI, N. CAVALLO, C. CECCHI, M. CERRADA, M. CHAMIZO, Y.H. CHANG, M. CHEMARIN, A. CHEN, G. CHEN, G.M. CHEN, H.F. CHEN, H.S. CHEN, G. CHIEFARI, L. CIFARELLI, F. CINDOLO, I. CLARE, R. CLARE, G. COIGNET, N. COLINO, S. COSTANTINI, B. DE LA CRUZ, S. CUCCIARELLI, R. DE ASMUNDIS, P. DÉGLON, J. DEBRECZENI, A. DEGRÉ, K. DEHMELT, K. DEITERS, D. DELLA VOLPE, E. DELMEIRE, P. DENES, F. DE NOTARISTEFANI, A. DE SALVO, M. DIEMOZ, M. DIERCKXSENS, C. DIONISI, M. DITTMAR, A. DORIA, M.T. DOVA, D. DUCHESNEAU, M. DUDA, B. ECHENARD, A. ELINE, A. EL HAGE, H. EL MAMOUNI, A. ENGLER, F.J. EPPLING, P. EXTERMANN, M.A. FALAGAN, S. FALCIANO, A. FAVARA, J. FAY, O. FEDIN, M. FELCINI, T. FERGUSON, H. FESEFELDT, E. FIANDRINI, J.H. FIELD, F. FILTHAUT, P.H. FISHER, W. FISHER, I. FISK, G. FORCONI, K. FREUDENREICH, C. FURETTA, YU. GALAKTIONOV, S.N. GANGULI, P. GARCIA-ABIA, M. GATAULLIN, S. GENTILE, S. GIAGU, Z.F. GONG, G. GRENIER, O. GRIMM, M.W. GRUENEWALD, M. GUIDA, V.K. GUPTA, A. GURTU, L.J. GUTAY, D. HAAS, D. HATZIFOTIADOU, T. HEBBEKER, A. HERVÉ, J. HIRSCHFELDER, H. HOFER, M. HOHLMANN, G. HOLZNER, S.R. HOU, B.N. JIN, P. JINDAL, L.W. JONES, P. DE JONG, I. JOSA-MUTUBERRÍA, M. KAUR, M.N. KIENZLE-FOCACCI, J.K. KIM, J. KIRKBY, W. KITTEL, A. KLIMENTOV, A.C. KOENIG, M. KOPAL, V. KOUTSENKO, M. KRAEBER, R.W. KRAEMER, A. KRUEGER, A. KUNIN, P. LADRON DE GUEVARA, I. LAKTINEH, G. LANDI, M. LEBEAU, A. LEBEDEV, P. LEBRUN, P. LECOMTE, P. LECOQ, P.LE COULTRE, J.M. LE GOFF, R. LEISTE, M. LEVTCHENKO, P. LEVTCHENKO, C. LI, S. LIKHODED, C.H. LIN, W.T. LIN, F.L. LINDE, L. LISTA, Z.A. LIU, W. LOHMANN, E. LONGO, Y.S. LU, C. LUCI, L. LUMINARI, W. LUSTERMANN, W.G. MA, L. MALGERI, A. MALININ, C. MANA, J. MANS, J.P. MARTIN, F. MARZANO, K. MAZUMDAR, R.R. MCNEIL, S. MELE, L. MEROLA, M. MESCHINI, W.J. METZGER, A. MIHUL, H. MILCENT, G. MIRABELLI, J. MNICH, G.B. MOHANTY, G.S. MUANZA, A.J.M. MUIJS, B. MUSICAR, M. MUSY, S. NAGY, S. NATALE, M. NAPOLITANO, F. NESSI-TEDALDI, H. NEWMAN, A. NISATI, T. NOVAK, H. NOWAK, R. OFIERZYNSKI, G. ORGANTINI, I. PAL, C. PALOMARES, P.PAOLUCCI, R. PARAMATTI, G. PASSALEVA, S. PATRICELLI, T. PAUL, M. PAULUZZI, C. PAUS, F. PAUSS, M. PEDACE, S. PENSOTTI, D. PERRET-GALLIX, D. PICCOLO, F. PIERELLA, M. PIOPPI, P.A. PIROUE, E. PISTOLESI, V. PLYASKIN, M. POHL, V. POJIDAEV, J.POTHIER, D.PROKOFIEV, G. RAHAL-CALLOT, M.A.RAHAMAN, P. RAICS, N. RAJA, R. RAMELLI, P.G. RANCOITA, R. RANIERI, A. RASPEREZA, P. RAZIS, D. REN, M. RESCIGNO, S. REUCROFT, S. RIEMANN, K. RILES, B.P. ROE, L. ROMERO, A. ROSCA, C. ROSEMANN, C. ROSENBLECK, S. ROSIER-LEES, S. ROTH, J.A. RUBIO, G. RUGGIERO, H. RYKACZEWSKI, A. SAKHAROV, S. SAREMI, S. SARKAR, J. SALICIO, E. SANCHEZ, C. SCHAEFER, V. SCHEGELSKY, H. SCHOPPER, D.J. SCHOTANUS, C. SCIACCA, L. SERVOLI, S. SHEVCHENKO, N. SHIVAROV, V. SHOUTKO, E. SHUMILOV, A. SHVOROB, D. SON, C. SOUGA, P. SPILLANTINI, M. STEUER, D.P. STICKLAND, B. STOYANOV, A. STRAESSNER, K. SUDHAKAR, G. SULTANOV, L.Z. SUN, S. SUSHKOV, H. SUTER, J.D. SWAIN, Z. SZILLASI, X.W. TANG, P. TARJAN, L. TAUSCHER, L. TAYLOR, B. TELLILI, D. TEYSSIER, C. TIMMERMANS, SAMUEL C.C. TING, S.M. TING, S.C. TONWAR, J. TOTH, C. TULLY, K.L. TUNG, J. ULBRICHT, E. VALENTE, R.T. VAN DE WALLE, R. VASQUEZ, V. VESZPREMI, G. VESZTERGOMBI, I. VETLITSKI, G. VIERTEL, S. VILLA, M. VIVARGENT, S. VLACHOS, I. VODOPIANOV, H. VOGEL, H. VOGT, I. VOROBIEV, A.A. VOROBYOV, M. WADHWA, Q. WANG, X.L. WANG, Z.M. WANG, M. WEBER, S. WYNHOFF, L. XIA, Z.Z. XU, J. YAMAMOTO, B.Z. YANG, C.G. YANG, H.J. YANG, M. YANG, S.C. YEH, AN. ZALITE, YU. ZALITE, Z.P. ZHANG, J. ZHAO, G.Y. ZHU, R.Y. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, and M. ZOELLER
- Subjects
Nuclear and High Energy Physics ,Particle physics ,Photon ,Astrophysics::High Energy Astrophysical Phenomena ,Monte Carlo method ,FOS: Physical sciences ,Fotones ,ddc:500.2 ,01 natural sciences ,Standard Model ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,0103 physical sciences ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,010306 general physics ,Ciencias Exactas ,Physics ,010308 nuclear & particles physics ,Física ,z boson ,L3 detector ,Experimental High Energy Physics ,Polar ,Production (computer science) ,High Energy Physics::Experiment ,Particle Physics - Experiment ,Muon detector - Abstract
The double-radiative process e+e− → Zγγ → q ̄qγγ where the two hard photons escape detection at low polar angles into opposite directions, is studied in 0.62 fb−1 of data collected with the L3 detector at LEP at centre-of-mass energies between 188.6 and 209.2 GeV. The cross sections are measured and found to be consistent with the Standard Model expectations., Facultad de Ciencias Exactas
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- 2005
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48. Transverse Spin at PHENIX: Results and Prospects
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Mate Csanad, Kazuya Aoki, Ron Soltz, Yaroslav Berdnikov, Vladislav Pantuev, Marisilvia Donadelli, Tomáš Liška, David D'Enterria, Naohito SAITO, Klaus Dehmelt, Yuji Goto, Victor Riabov, Susumu Oda, Paul Constantin, Sergey Fokin, Andrew Glenn, Steve Skutnik, Michael Heffner, Ryugo Hayano, and Kenta Shigaki
- Subjects
Physics ,Particle physics ,Transverse plane ,High Energy Physics - Experiment (hep-ex) ,Physics::Accelerator Physics ,FOS: Physical sciences ,Spin structure ,Relativistic Heavy Ion Collider ,Polarization (waves) ,Nuclear Experiment ,High Energy Physics - Experiment - Abstract
The Relativistic Heavy Ion Collider (RHIC), as the world's first and only polarized proton collider, offers a unique environment in which to study the spin structure of the proton. In order to study the proton's transverse spin structure, the PHENIX experiment at RHIC took data with transversely polarized beams in 2001-02 and 2005, and it has plans for further running with transverse polarization in 2006 and beyond. Results from early running as well as prospective measurements for the future will be discussed., Comment: 6 pages, 2 figures, presented at Transversity 2005, Como, Italy
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- 2005
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49. Inclusive jet production in two-photon collisions at LEP
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G. Landi, Riccardo Paramatti, S. Sarkar, M. Bourquin, R. Barillère, A. J.M. Muijs, A. Kunin, Manjit Kaur, A. Böhm, Marta Felcini, B. Musicar, M. Vivargent, D. Piccolo, P. Achard, W. J. Metzger, D. Teyssier, S. V. Baldew, Lamberto Luminari, A. Favara, Pablo Garcia-Abia, Alain Hervé, D. O. Prokofiev, John Swain, Francesco Becattini, D. Haas, A. Bay, L. Cifarelli, A. Biland, Z. A. Liu, K. Sudhakar, G. Chiefari, J. Casaus, Jasper Kirkby, M. A. Falagan, M. W. Gruenewald, A. Doria, Pierluigi Paolucci, L. Xia, Vladimir Andreev, Pierre Lecomte, S. Pensotti, Valery Schegelsky, Antonino Zichichi, Roberto Battiston, Qiuwang Wang, S. Saremi, M. Aguilar-Benitez, O. Grimm, H. Milcent, M. Zöller, P. Lebrun, H. F. Chen, Herwig Schopper, Stefan Roth, Samuel C.C. Ting, Jeremy Mans, H. J. Yang, H. Rykaczewski, Giovanni Organtini, Werner Lustermann, Charles Timmermans, H. Wilkens, R. Ofierzynski, R. Ramelli, M. Dierckxsens, E. Valente, T. Paul, G. J. Bobbink, F. Cavallari, J. P. Martin, J. M. Le Goff, J. Yamamoto, S. Natale, P. Tarján, Dimitri Bourilkov, A. Barczyk, G. S. Muanza, W. J. Burger, V. Plyaskin, Crisostomo Sciacca, Guo-Ming Chen, P. Spillantini, I. Josa-Mutuberria, M. Kräber, S. Vlachos, Alexander S. Sakharov, Jean Fay, B. Petersen, S. Likhoded, P. de Jong, N. Shivarov, Claudio Luci, Robert Clare, W. G. Ma, Thomas Hebbeker, Paul Lecoq, R. W. Kraemer, Egidio Longo, A. Degré, G. Y. Zhu, E. Shumilov, T. Azemoon, F. L. Linde, L. Z. Sun, J. A. Rubio, J. Salicio, C. G. Yang, J. Pothier, Z. Wang, N. Colino, R. Berbeco, C-Q. Li, M. Biasini, Yu. Zalite, T. Novak, Alexei Raspereza, M. Napolitano, D. P. Stickland, L. Bellucci, M. Lebeau, Ren-Yuan Zhu, Y. Galaktionov, E. Fiandrini, Gyorgy Vesztergombi, Jiawei Zhao, B. Echenard, M. N. Kienzle-Focacci, M. T. Dova, J. Ulbricht, B. Tellili, Luca Lista, G. Viertel, V. K. Gupta, D. Duchesneau, H. S. Chen, Peter Denes, A. De Salvo, L. Servoli, J. K. Kim, M. Duda, A. Krüger, A. Arefiev, R. R. McNeil, G. Coignet, B. Zimmermann, M. Pedace, K. Freudenreich, G. B. Mohanty, C. Souga, P. Bartalini, Francesca Nessi-Tedaldi, F. DeNotaristefani, I. Pal, C. Paus, Leonardo Merola, S. Shevchenko, L. Malgeri, Willis Lin, H. L. Zhuang, Arno Straessner, A. Gurtu, Alberto Aloisio, Sabine Riemann, G. Ruggiero, J. G. Branson, S. Bottai, F. Pierella, I. Vodopianov, G. Rahal-Callot, G. Holzner, L. Tauscher, Harvey B Newman, M. Musy, K. Riles, A. Engler, S. Cucciarelli, S. Wynhoff, Sándor Nagy, N. Raja, F. Marzano, Ya Han Hu, I. Clare, B. L. Betev, M. Capell, C. Maña, G. Mirabelli, F. Behner, X. W. Tang, J. Mnich, N. Batalova, S. C. Tonwar, R. T. Van de Walle, H. S. Fesefeldt, P. A. Piroué, E. Pistolesi, M. Kopal, Frank Filthaut, S. C. Blyth, M. Chamizo, H. Suter, G. Baksay, Axel König, X. L. Wang, M. Steuer, G. Carlino, L. Baksay, M. Pauluzzi, P. G. Rancoita, An.A. Vorobyov, D. Vicinanza, W. Kittel, J. Alcaraz, R. van Gulik, E. Delmeire, Helmut Vogel, Z. Z. Xu, Alexander Malinin, C. H. Lin, V. Pojidaev, Thomas Ferguson, R. Leiste, B. N. Jin, P. Extermann, H. Nowak, Salvatore Mele, Y. S. Lu, Christoph Schäfer, B. Z. Yang, A. Shvorob, R. Ranieri, Peter Raics, O. Adriani, Imad Baptiste Laktineh, M. A. Rahaman, D. Perret-Gallix, H. Hofer, K. L. Tung, W. C. Fisher, Michela Biglietti, A. Mihul, M. Levtchenko, Lucas Taylor, J. H. Field, M. Diemoz, A. Lebedev, Dong-Chul Son, G. Alemanni, M. Cerrada, D. Ren, B. Stoyanov, Marco Meschini, J. Hirschfelder, S. C. Yeh, An. Zalite, Stefano Giagu, J. D. Burger, J. Allaby, R. Vasquez, S. Banerjee, C. Palomares, Mariagrazia Alviggi, N. Cavallo, V. Shoutko, Klaus Dehmelt, S. R. Hou, M. Wadhwa, I. Vetlitsky, S. Villa, D. J. Schotanus, Igor Vorobiev, P. Levtchenko, Panos A Razis, E. J. Sanchez, A. El Hage, Christopher George Tully, J. Berdugo, M. Rescigno, P. Berges, T. Aziz, Zhenyu Zhang, Wolfgang Lohmann, H. Vogt, B. Bertucci, F. Anselmo, Mingming Yang, M. Gataullin, A. Rosca, J. A. van Dalen, M. Dittmar, A. Bajo, K. Deiters, C. Furetta, C. Rosenbleck, Z. F. Gong, P. Bagnaia, B. De La Cruz, G. Forconi, M. Pohl, Jozsef Toth, G. Grenier, S. Reucroft, J. Debreczeni, P. Déglon, Speranza Falciano, D. Käfer, Simonetta Gentile, A. Klimentov, A. Cartacci, G. Cara Romeo, B. P. Roe, H. El Mamouni, C. Cecchi, C. Dionisi, F. Brochu, D. della Volpe, Oleg Fedin, Peter H. Fisher, H. Anderhub, F. Cindolo, V. Veszpremi, Michele Guida, Aleandro Nisati, L. Boldizsar, Joseph Quartieri, S. N. Ganguli, S. Braccini, A. Chen, Matthias Weber, P. Wienemann, Georgi Sultanov, R. de Asmundis, I. Fisk, Y. H. Chang, M. Chemarin, G. M. Chen, Z. Szillasi, V. Koutsenko, Felicitas Pauss, S. Rosier-Lees, P. Le Coultre, M. Basile, P. De Ladron Guevara, S. Sushkov, M. Pioppi, L. J. Gutay, U. Becker, F. J. Eppling, L. W. Jones, S. Costantini, Kajari Mazumdar, X. D. Cai, Marcus Hohlmann, B. Borgia, A. Eline, G. Passaleva, S. Patricelli, D. Hatzifotiadou, J. J. Blaising, L. Romero, L3 (IHEF, IoP, FNWI), Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Natale, Sonia, Pohl, Martin, Straessner, Arno, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), L3, P., Achard, Aloisio, Alberto, Alviggi, Mariagrazia, Chiefari, Giovanni, DELLA VOLPE, Domenico, Merola, Leonardo, Napolitano, Marco, Patricelli, Sergio, Sciacca, Crisostomo, Lista, Luca, 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Wang, Z, Weber, M, Wienemann, P, Wilkens, H, Wynhoff, S, Xia, L, Xu, Z, Yamamoto, J, Yang, B, Yang, C, Yang, H, Yang, M, Yeh, S, Zalite, A, Zalite, Y, Zhang, Z, Zhao, J, Zhu, G, Zhu, R, Zhuang, H, Zichichi, A, Zimmermann, B, Zöller, M, IHEF (IoP, FNWI), P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, A. ALOISIO, M.G. ALVIGGI, H. ANDERHUB, V.P. ANDREEV, F. ANSELMO, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, A. BAJO, G. BAKSAY, L. BAKSAY, S.V. BALDEW, S. BANERJEE, SW. BANERJEE, A. BARCZYK, R. BARILLÈRE, P. BARTALINI, M. BASILE, N. BATALOVA, R. BATTISTON, A. BAY, F. BECATTINI, U. BECKER, F. BEHNER, L. BELLUCCI, R. BERBECO, J. BERDUGO, P. BERGES, B. BERTUCCI, B.L. BETEV, M. BIASINI, M. BIGLIETTI, A. BILAND, J.J. BLAISING, S.C. BLYTH, G.J. BOBBINK, A. BÖHM, L. BOLDIZSAR, B. BORGIA, S. BOTTAI, D. BOURILKOV, M. BOURQUIN, S. BRACCINI, J.G. BRANSON, F. BROCHU, J.D. BURGER, W.J. BURGER, X.D. CAI, M. CAPELL, G. CARA ROMEO, G. CARLINO, A. CARTACCI, J. CASAUS, F. CAVALLARI, N. CAVALLO, C. CECCHI, M. CERRADA, M. CHAMIZO, Y.H. CHANG, M. CHEMARIN, A. CHEN, G. CHEN, G.M. CHEN, H.F. CHEN, H.S. CHEN, G. CHIEFARI, L. CIFARELLI, F. CINDOLO, I. CLARE, R. CLARE, G. COIGNET, N. COLINO, S. COSTANTINI, B. DE LA CRUZ, S. CUCCIARELLI, J.A. VAN DALEN, R. DE ASMUNDIS, P. DÉGLON, J. DEBRECZENI, A. DEGRÉ, K. DEHMELT, K. DEITERS, D. DELLA VOLPE, E. DELMEIRE, P. DENES, F. DE NOTARISTEFANI, A. DE SALVO, M. DIEMOZ, M. DIERCKXSENS, C. DIONISI, M. DITTMAR, A. DORIA, M.T. DOVA, D. DUCHESNEAU, M. DUDA, B. ECHENARD, A. ELINE, A. EL HAGE, H. EL MAMOUNI, A. ENGLER, F.J. EPPLING, P. EXTERMANN, M.A. FALAGAN, S. FALCIANO, A. FAVARA, J. FAY, O. FEDIN, M. FELCINI, T. FERGUSON, H. FESEFELDT, E. FIANDRINI, J.H. FIELD, F. FILTHAUT, P.H. FISHER, W. FISHER, I. FISK, G. FORCONI, K. FREUDENREICH, C. FURETTA, YU. GALAKTIONOV, S.N. GANGULI, P. GARCIA-ABIA, M. GATAULLIN, S. GENTILE, S. GIAGU, Z.F. GONG, G. GRENIER, O. GRIMM, M.W. GRUENEWALD, M. GUIDA, V.K. GUPTA, A. GURTU, L.J. GUTAY, D. HAAS, D. HATZIFOTIADOU, T. HEBBEKER, A. HERVÉ, J. HIRSCHFELDER, H. HOFER, M. HOHLMANN, G. HOLZNER, S.R. HOU, Y. HU, B.N. JIN, L.W. JONES, P. DE JONG, I. JOSA-MUTUBERRÍA, M. KAUR, M.N. KIENZLE-FOCACCI, J.K. KIM, J. KIRKBY, W. KITTEL, A. KLIMENTOV, A.C. KOENIG, M. KOPAL, V. KOUTSENKO, M. KRAEBER, R.W. KRAEMER, A. KRUEGER, A. KUNIN, P. LADRON DE GUEVARA, I. LAKTINEH, G. LANDI, M. LEBEAU, A. LEBEDEV, P. LEBRUN, P. LECOMTE, P. LECOQ, P. LE COULTRE, J.M. LE GOFF, R. LEISTE, M. LEVTCHENKO, P. LEVTCHENKO, C. LI, S. LIKHODED, C.H. LIN, W.T. LIN, F.L. LINDE, L. LISTA, Z.A. LIU, W. LOHMANN, E. LONGO, Y.S. LU, C. LUCI, L. LUMINARI, W. LUSTERMANN, W.G. MA, L. MALGERI, A. MALININ, C. MANA, D. MANGEOL, J. MANS, J.P. MARTIN, F. MARZANO, K. MAZUMDAR, R.R. MCNEIL, S. MELE, L. MEROLA, M. MESCHINI, W.J. METZGER, A. MIHUL, H. MILCENT, G. MIRABELLI, J. MNICH, G.B. MOHANTY, G.S. MUANZA, A.J.M. MUIJS, B. MUSICAR, M. MUSY, S. NAGY, S. NATALE, M. NAPOLITANO, F. NESSI-TEDALDI, H. NEWMAN, A. NISATI, T. NOVAK, H. NOWAK, R. OFIERZYNSKI, G. ORGANTINI, I. PAL, C. PALOMARES, P.PAOLUCCI, R. PARAMATTI, G. PASSALEVA, S. PATRICELLI, T. PAUL, M. PAULUZZI, C. PAUS, F. PAUSS, M. PEDACE, S. PENSOTTI, D. PERRET-GALLIX, B. PETERSEN, D. PICCOLO, F. 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VASQUEZ, V. VESZPREMI, G. VESZTERGOMBI, I. VETLITSKI, D. VICINANZA, G. VIERTEL, S. VILLA, M. VIVARGENT, S. VLACHOS, I. VODOPIANOV, H. VOGEL, H. VOGT, I. VOROBIEV, A.A. VOROBYOV, M. WADHWA, Q. WANG, X.L. WANG, Z.M. WANG, M. WEBER, H. WILKENS, S. WYNHOFF, L. XIA, Z.Z. XU, J. YAMAMOTO, B.Z. YANG, C.G. YANG, H.J. YANG, M. YANG, S.C. YEH, AN. ZALITE, YU. ZALITE, Z.P. ZHANG, J. ZHAO, G.Y. ZHU, R.Y. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, and M. ZOELLER
- Subjects
Nuclear and High Energy Physics ,Particle physics ,jet production ,L3,CERN-LEP-L3 ,Astrophysics::High Energy Astrophysical Phenomena ,Ciencias Físicas ,FOS: Physical sciences ,Fotones ,ddc:500.2 ,7. Clean energy ,01 natural sciences ,Power law ,High Energy Physics - Experiment ,purl.org/becyt/ford/1 [https] ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,Cross section (physics) ,Pion ,TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY ,0103 physical sciences ,quantum chromodynamics ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,010306 general physics ,Nuclear Experiment ,Ciencias Exactas ,Quantum chromodynamics ,Physics ,Jet (fluid) ,Range (particle radiation) ,010308 nuclear & particles physics ,Física ,purl.org/becyt/ford/1.3 [https] ,photon-photon collisions ,cross-sections ,l3 experiment ,hadron-collisions ,pair production ,leading order ,final-states ,detector ,trigger ,energies ,Astronomía ,Pair production ,L3 detector ,Pseudorapidity ,High Energy Physics::Experiment ,Particle Physics - Experiment ,FIS/04 - FISICA NUCLEARE E SUBNUCLEARE ,CIENCIAS NATURALES Y EXACTAS - Abstract
Inclusive jet production, e+e− → e+e− jet X, is studied using 560 pb−1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The inclusive differential cross section is measured using a kt jet algorithm as a function of the jet transverse momentum, pt, in the range 3 < pt < 50 GeV for a pseudorapidity, η, in the range −1 pt , the measured cross section is significantly higher than the NLO QCD predictions, as already observed for inclusive π± and π0 production., Facultad de Ciencias Exactas
- Published
- 2004
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50. Search for an invisibly-decaying Higgs boson at LEP
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Yu. Galaktionov, D. Vicinanza, J. Alcaraz, Tariq Aziz, D. Teyssier, Roberto Battiston, A. Bajo, P. Tarján, Dimitri Bourilkov, A. Mihul, G. Alemanni, M. Duda, K. Freudenreich, Gerjan Bobbink, B. Borgia, M. T. Dova, B. N. Jin, P. Spillantini, S. C. Yeh, C. Furetta, Alexander Malinin, P. Lebrun, Jeremy Mans, J. Ulbricht, E. Fiandrini, Gyorgy Vesztergombi, Luca Malgeri, R. Ranieri, B. De La Cruz, W. C. Fisher, A. Lebedev, Dong-Chul Son, G. Forconi, Crisostomo Sciacca, C. Rosenbleck, B. Echenard, H. El Mamouni, Samuel C.C. Ting, Simonetta Gentile, A. Klimentov, Guo-Ming Chen, F. L. Linde, A. De Salvo, B. Tellili, G. Landi, L. Romero, J. J. Blaising, J. Hirschfelder, Stefano Giagu, Jozsef Toth, R. Barillère, P. Déglon, Speranza Falciano, Sw. Banerjee, B. Zimmermann, P. Bartalini, J. K. Kim, G. Cara Romeo, G. Ruggiero, S. Cucciarelli, C. Maña, A. Chen, C. Paus, J. Salicio, Konrad Deiters, A. J.M. Muijs, An. Zalite, G. B. Mohanty, Alberto Aloisio, N. Batalova, R. T. Van de Walle, S. Bottai, Harvey B Newman, M. Bourquin, J. Mnich, Manjit Kaur, I. Clare, G. Passaleva, Ren-Yuan Zhu, Mariagrazia Alviggi, I. Josa-Mutuberria, M. Kräber, An.A. Vorobyov, Leonardo Merola, Sándor Nagy, C-Q. Li, G. Grenier, M. Gataullin, M. Pedace, Felicitas Pauss, V. K. Gupta, Klaus Dehmelt, X. W. Tang, Helmut Vogel, P. Achard, M. Musy, I. Vetlitsky, P. A. Piroué, L. Tauscher, Oleg Fedin, M. Chamizo, A. Gurtu, Alessandra Doria, O. Adriani, R. Berbeco, Gianpaolo Carlino, A. El Hage, T. Azemoon, Imad Baptiste Laktineh, Lucas Taylor, A. Barczyk, F. DeNotaristefani, Adrian Biland, L. J. Gutay, P. Jindal, M. Vivargent, S. Rosier-Lees, S. Reucroft, S. V. Baldew, P. G. Rancoita, D. O. Prokofiev, Peter Raics, J. Debreczeni, U. Becker, R. Ramelli, P. Le Coultre, Marcos Cerrada, R. Leiste, H. Nowak, T. Paul, H. Milcent, C. Souga, Kajari Mazumdar, Jasper Kirkby, M. A. Falagan, M. Pioppi, P. de Jong, X. D. Cai, N. Shivarov, Claudio Luci, Zhenyu Zhang, M. Basile, Axel König, J. Casaus, Robert Clare, S. Natale, C. Dionisi, I. Vodopianov, A. Engler, S. Wynhoff, Pablo Garcia-Abia, M. Zöller, W. G. Ma, Thomas Hebbeker, H. Anderhub, Paul Lecoq, R. W. Kraemer, P. Berges, M. Napolitano, Marcus Hohlmann, A. Rosca, M. Capell, S. Vlachos, Alain Hervé, M. Biglietti, H. S. Fesefeldt, E. Pistolesi, A. Bay, S. R. Hou, M. Wadhwa, H. Vogt, Michele Guida, D. Duchesneau, H. S. Chen, Riccardo Paramatti, C. G. Yang, J. Pothier, Pierluigi Paolucci, F. J. Eppling, L. W. Jones, D. J. Schotanus, L. Servoli, A. Arefiev, D. P. Stickland, E. Delmeire, R. Vasquez, Y. S. Lu, I. Pal, Y. H. Chang, A. Shvorob, V. Plyaskin, P. Ladron de Guevara, K. Sudhakar, M. Levtchenko, Maurizio Biasini, Yu. Zalite, S. Braccini, Marta Felcini, B. P. Roe, A. Kunin, L. Xia, J. H. Field, Francesca Nessi-Tedaldi, T. Novak, R. R. McNeil, M. Aguilar-Benitez, O. Grimm, Wesley James Metzger, B. Stoyanov, Herwig Schopper, Francesco Becattini, R. de Asmundis, I. Fisk, S. Sushkov, J. D. Burger, Hao-Ze Chen, G. Rahal-Callot, B. Musicar, Alexei Raspereza, Z. A. Liu, M. W. Gruenewald, N. Raja, W. Kittel, H. L. Zhuang, Arno Straessner, Qiuwang Wang, A. Krüger, H. J. Yang, Subir Sarkar, F. Brochu, D. della Volpe, H. Suter, L. Z. Sun, G. Chiefari, S. Shevchenko, R. Ofierzynski, G. Holzner, F. Behner, Peter H. Fisher, K. Riles, S. Saremi, Stefan Roth, S. Likhoded, M. Rescigno, M. Pohl, L. Bellucci, Z. M. Wang, F. Marzano, G. Coignet, V. Shoutko, D. Haas, V. Veszpremi, J. M. Le Goff, J. Yamamoto, A. Favara, Christoph Rosemann, M. Kopal, J. G. Branson, Mingming Yang, M. Steuer, M. A. Rahaman, D. Perret-Gallix, J. A. Rubio, Davide Piccolo, S. N. Ganguli, Marcella Diemoz, A. Eline, A. Degré, Aleandro Nisati, Luisa Cifarelli, Nicola Cavallo, Joseph Quartieri, Z. Szillasi, V. Koutsenko, Z. F. Gong, S. Patricelli, D. Hatzifotiadou, Laszlo Boldizsar, E. Valente, L. Baksay, M. N. Kienzle-Focacci, Georgi Sultanov, G. Baksay, G. Viertel, M. Lebeau, M. Chemarin, S. Costantini, G. M. Chen, X. L. Wang, M. Pauluzzi, D. Ren, S. Villa, Igor Vorobiev, P. Levtchenko, Panos A Razis, J. Berdugo, E. J. Sanchez, Francesca Cavallari, John Swain, J. P. Martin, Alexander S. Sakharov, G. Y. Zhu, E. Shumilov, Claudia Cecchi, J. Allaby, C. Palomares, Marc Weber, P. Extermann, Salvatore Mele, Christoph Schäfer, B. Z. Yang, H. Hofer, K. L. Tung, Egidio Longo, Jiawei Zhao, B. L. Betev, A. M. Cartacci, Z. Z. Xu, C. H. Lin, V. Pojidaev, Luca Lista, Willis Lin, Sabine Riemann, F. Pierella, Federico Cindolo, S. C. Tonwar, Frank Filthaut, Thomas Ferguson, Vladimir Andreev, Peter Denes, Paolo Bagnaia, S. C. Blyth, Marco Meschini, Christopher George Tully, Wolfgang Lohmann, B. Bertucci, F. Anselmo, Nicanor Colino, G. Mirabelli, S. Pensotti, Valery Schegelsky, Antonino Zichichi, H. Rykaczewski, Giovanni Organtini, Lamberto Luminari, G. S. Muanza, Pierre Lecomte, Jean Fay, Werner Lustermann, Charles Timmermans, M. Dierckxsens, W. J. Burger, Michael Dittmar, A. Böhm, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3, P. ACHARD, O. ADRIANI, M. AGUILAR-BENITEZ, J. ALCARAZ, G. ALEMANNI, J. ALLABY, A. ALOISIO, M.G. ALVIGGI, H. ANDERHUB, V.P. ANDREEV, F. ANSELMO, A. AREFIEV, T. AZEMOON, T. AZIZ, P. BAGNAIA, A. BAJO, G. BAKSAY, L. BAKSAY, S.V. BALDEW, S. BANERJEE, SW. BANERJEE, A. BARCZYK, R. BARILLÈRE, P. BARTALINI, M. BASILE, N. BATALOVA, R. BATTISTON, A. BAY, F. BECATTINI, U. BECKER, F. BEHNER, L. BELLUCCI, R. BERBECO, J. BERDUGO, P. BERGES, B. BERTUCCI, B.L. BETEV, M. BIASINI, M. BIGLIETTI, A. BILAND, J.J. BLAISING, S.C. BLYTH, G.J. BOBBINK, A. BÖHM, L. BOLDIZSAR, B. BORGIA, S. BOTTAI, D. BOURILKOV, M. BOURQUIN, S. BRACCINI, J.G. BRANSON, F. BROCHU, J.D. BURGER, W.J. BURGER, X.D. CAI, M. CAPELL, G. CARA ROMEO, G. CARLINO, A. CARTACCI, J. CASAUS, F. CAVALLARI, N. CAVALLO, C. CECCHI, M. CERRADA, M. CHAMIZO, Y.H. CHANG, M. CHEMARIN, A. CHEN, G. CHEN, G.M. CHEN, H.F. CHEN, H.S. CHEN, G. CHIEFARI, L. CIFARELLI, F. CINDOLO, I. CLARE, R. CLARE, G. COIGNET, N. COLINO, S. COSTANTINI, B. DE LA CRUZ, S. CUCCIARELLI, J.A. VAN DALEN, R. DE ASMUNDIS, P. DÉGLON, J. DEBRECZENI, A. DEGRÉ, K. DEHMELT, K. DEITERS, D. DELLA VOLPE, E. DELMEIRE, P. DENES, F. DE NOTARISTEFANI, A. DE SALVO, M. DIEMOZ, M. DIERCKXSENS, C. DIONISI, M. DITTMAR, A. DORIA, M.T. DOVA, D. DUCHESNEAU, M. DUDA, B. ECHENARD, A. ELINE, A. EL HAGE, H. EL MAMOUNI, A. ENGLER, F.J. EPPLING, P. EXTERMANN, M.A. FALAGAN, S. FALCIANO, A. FAVARA, J. FAY, O. FEDIN, M. FELCINI, T. FERGUSON, H. FESEFELDT, E. FIANDRINI, J.H. FIELD, F. FILTHAUT, P.H. FISHER, W. FISHER, I. FISK, G. FORCONI, K. FREUDENREICH, C. FURETTA, YU. GALAKTIONOV, S.N. GANGULI, P. GARCIA-ABIA, M. GATAULLIN, S. GENTILE, S. GIAGU, Z.F. GONG, G. GRENIER, O. GRIMM, M.W. GRUENEWALD, M. GUIDA, V.K. GUPTA, A. GURTU, L.J. GUTAY, D. HAAS, D. HATZIFOTIADOU, T. HEBBEKER, A. HERVÉ, J. HIRSCHFELDER, H. HOFER, M. HOHLMANN, G. HOLZNER, S.R. HOU, Y. HU, B.N. JIN, L.W. JONES, P. DE JONG, I. JOSA-MUTUBERRÍA, M. KAUR, M.N. KIENZLE-FOCACCI, J.K. KIM, J. KIRKBY, W. KITTEL, A. KLIMENTOV, A.C. KOENIG, M. KOPAL, V. KOUTSENKO, M. KRAEBER, R.W. KRAEMER, A. KRUEGER, A. KUNIN, P. LADRON DE GUEVARA, I. LAKTINEH, G. LANDI, M. LEBEAU, A. LEBEDEV, P. LEBRUN, P. LECOMTE, P. LECOQ, P. LE COULTRE, J.M. LE GOFF, R. LEISTE, M. LEVTCHENKO, P. LEVTCHENKO, C. LI, S. LIKHODED, C.H. LIN, W.T. LIN, F.L. LINDE, L. LISTA, Z.A. LIU, W. LOHMANN, E. LONGO, Y.S. LU, C. LUCI, L. LUMINARI, W. LUSTERMANN, W.G. MA, L. MALGERI, A. MALININ, C. MANA, D. MANGEOL, J. MANS, J.P. MARTIN, F. MARZANO, K. MAZUMDAR, R.R. MCNEIL, S. MELE, L. MEROLA, M. MESCHINI, W.J. METZGER, A. MIHUL, H. MILCENT, G. MIRABELLI, J. MNICH, G.B. MOHANTY, G.S. MUANZA, A.J.M. MUIJS, B. MUSICAR, M. MUSY, S. NAGY, S. NATALE, M. NAPOLITANO, F. NESSI-TEDALDI, H. NEWMAN, A. NISATI, T. NOVAK, H. NOWAK, R. OFIERZYNSKI, G. ORGANTINI, I. PAL, C. PALOMARES, P.PAOLUCCI, R. PARAMATTI, G. PASSALEVA, S. PATRICELLI, T. PAUL, M. PAULUZZI, C. PAUS, F. PAUSS, M. PEDACE, S. PENSOTTI, D. PERRET-GALLIX, B. PETERSEN, D. PICCOLO, F. PIERELLA, M. PIOPPI, P.A. PIROUE, E. PISTOLESI, V. PLYASKIN, M. POHL, V. POJIDAEV, J. POTHIER, D. PROKOFIEV, J. QUARTIERI, G. RAHAL-CALLOT, M.A.RAHAMAN, P. RAICS, N. RAJA, R. RAMELLI, P.G. RANCOITA, R. RANIERI, A. RASPEREZA, P. RAZIS, D. REN, M. RESCIGNO, S. REUCROFT, S. RIEMANN, K. RILES, B.P. ROE, L. ROMERO, A. ROSCA, C. ROSEMANN, C. ROSENBLECK, S. ROSIER-LEES, S. ROTH, J.A. RUBIO, G. RUGGIERO, H. RYKACZEWSKI, A. SAKHAROV, S. SAREMI, S. SARKAR, J. SALICIO, E. SANCHEZ, C. SCHAEFER, V. SCHEGELSKY, H. SCHOPPER, D.J. SCHOTANUS, C. SCIACCA, L. SERVOLI, S. SHEVCHENKO, N. SHIVAROV, V. SHOUTKO, E. SHUMILOV, A. SHVOROB, D. SON, C. SOUGA, P. SPILLANTINI, M. STEUER, D.P. STICKLAND, B. STOYANOV, A. STRAESSNER, K. SUDHAKAR, G. SULTANOV, L.Z. SUN, S. SUSHKOV, H. SUTER, J.D. SWAIN, Z. SZILLASI, X.W. TANG, P. TARJAN, L. TAUSCHER, L. TAYLOR, B. TELLILI, D. TEYSSIER, C. TIMMERMANS, SAMUEL C.C. TING, S.M. TING, S.C. TONWAR, J. TOTH, C. TULLY, K.L. TUNG, J. ULBRICHT, E. VALENTE, R.T. VAN DE WALLE, R. VASQUEZ, V. VESZPREMI, G. VESZTERGOMBI, I. VETLITSKI, D. VICINANZA, G. VIERTEL, S. VILLA, M. VIVARGENT, S. VLACHOS, I. VODOPIANOV, H. VOGEL, H. VOGT, I. VOROBIEV, A.A. VOROBYOV, M. WADHWA, Q. WANG, X.L. WANG, Z.M. WANG, M. WEBER, H. WILKENS, S. WYNHOFF, L. XIA, Z.Z. XU, J. YAMAMOTO, B.Z. YANG, C.G. YANG, H.J. YANG, M. YANG, S.C. YEH, AN. ZALITE, YU. ZALITE, Z.P. ZHANG, J. ZHAO, G.Y. ZHU, R.Y. ZHU, H.L. ZHUANG, A. ZICHICHI, B. ZIMMERMANN, M. ZOELLER, Achard, Pablo, Bourquin, Maurice, Braccini, Saverio, Chamizo Llatas, Maria, Deglon, Patrick, Delmeire, Evelyne, Echenard, Bertrand, Extermann, Pierre, Field, John, Kienzle, Maria-Novella, Natale, Sonia, Pohl, Martin, Straessner, Arno, P., Achard, Aloisio, Alberto, Alviggi, Mariagrazia, Chiefari, Giovanni, DELLA VOLPE, Domenico, Merola, Leonardo, Napolitano, Marco, Patricelli, Sergio, Sciacca, Crisostomo, and Lista, Luca
- Subjects
Nuclear and High Energy Physics ,Particle physics ,Z boson ,Root-S ,Higgs boson ,Electron–positron annihilation ,Hadron ,FOS: Physical sciences ,E(+)E(-) Collisions ,ddc:500.2 ,01 natural sciences ,Standard Model ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,Flavor Independent Search ,0103 physical sciences ,L3 Experiment ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,Final-States ,010306 general physics ,Ciencias Exactas ,Pair Production ,Physics ,Missing energy ,Muon ,electroweak interaction ,010308 nuclear & particles physics ,Muon Detector ,Electroweak interaction ,High Energy Physics::Phenomenology ,Monte-Carlo Program ,Física ,Pair production ,Experimental High Energy Physics ,High Energy Physics::Experiment ,Cross-Sections ,Particle Physics - Experiment ,Broken Symmetries - Abstract
A search for a Higgs boson produced in e+e− collisions in association with a Z boson and decaying into invisible particles is performed. Data collected at LEP with the L3 detector at centre-of-mass energies from 189 to 209 GeV are used, corresponding to an integrated luminosity of 0.63 fb−1. Events with hadrons, electrons or muons with visible masses compatible with a Z boson and missing energy and momentum are selected. They are consistent with the Standard Model expectations. A lower limit of 112.3 GeV is set at 95% confidence level on the mass of the invisibly-decaying Higgs boson in the hypothesis that its production cross section equals that of the Standard Model Higgs boson. Relaxing this hypothesis, upper limits on the production cross section are derived., Facultad de Ciencias Exactas
- Published
- 2004
- Full Text
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