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13 results on '"Patrik Adlarson"'

11. First Measurement of Polarizations in the Decay D0→ωφ

Author

Stefano Spataro, Antonio Amoroso, Ilaria BALOSSINO, Meike Kuessner, Hajime Muramatsu, Michela Greco, Riccardo Farinelli, Riccardo Aliberti, Wolfgang Gradl, Jens Sören Lange, Vindhyawasini Prasad, Patrik Adlarson, Johan Messchendorp, Ralf Kliemt, Giulio Mezzadri, and Karin Schoenning

Subjects
General Physics and Astronomy
Published
2022
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12. Spin dependence of {\eta} meson production in proton-proton collisions close to threshold

Author

M. Bashkanov, Günter Kemmerling, A. Erven, I. Schätti-Ozerianska, K. Sitterberg, G. Sterzenbach, W. Eyrich, A. Magiera, B. Lorentz, H. P. Morsch, O. Khreptak, Ralf Engels, N. Hüsken, Paweł Moskal, Zbigniew Rudy, Marcin Zieliński, Eryk Czerwiński, C.-O. Gullström, Markus Büscher, Harald Kleines, Ankhi Roy, W. Bardan, Aleksandra Wrońska, Hans Calén, E. Perez del Rio, T. Sefzick, Stanisław Kistryn, J. Zabierowski, K. Pysz, V. Hejny, Akira Yamamoto, Kjell Fransson, Lena Heijkenskjöld, D. Prasuhn, Antoni Szczurek, A. Khoukaz, Magdalena Skurzok, B. Mariański, K. Grigoryev, Jozef Zlomanczuk, Wojciech Krzemien, V. Sopov, Andrzej Kupsc, Patrik Adlarson, Frank Goldenbaum, Pawel Marciniewski, Damian Pszczel, B. Shwartz, J. Stepaniak, P. Zupranski, D. Lersch, J. Ritman, A. Trzcinski, G. Khatri, P. Fedorets, W. Augustyniak, Tord Johansson, L. Jarczyk, W. Erven, V. Serdyuk, Steven D. Bass, H. Ohm, H. Clement, M. Berłowski, K. Föhl, K. Lalwani, A. Bondar, H. Stroeher, Maria Zurek, Jerzy Smyrski, B. Kamys, P. Wüstner, B. Kłos, T. Skorodko, S. Schadmand, K. Demmich, A. Pyszniak, S. Sawant, Di. Kirillov, A. Kuzmin, F. S. Bergmann, Magnus Wolke, Izabela Ciepał, A. Goswami, Hans Stockhorst, Rolf Stassen, Rudolf Maier, P. Kulessa, Wiktor Parol, Oleksandr Rundel, E. Stephan, and N.M. Piskunov

Subjects
Nuclear Theory, General Physics and Astronomy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, 0103 physical sciences, ddc:530, FACILITY, NEAR-THRESHOLD, 010306 general physics, NUCLEON, Nuclear Experiment, Nuclear theory, Physics, QUASI-FREE, 010308 nuclear & particles physics, Eta meson, Detector, COSY, Polarization (waves), Near threshold, High Energy Physics - Phenomenology, Physics::Accelerator Physics, Axial symmetry, Nucleon
Abstract

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the polarized proton beam of COSY, the reaction pp{\to} pp{\eta} has been measured close to threshold to explore the analyzing power Ay. The angular distribution of Ay is determined with the precision improved by more than one order of magnitude with respect to previous results allowing a first accurate comparison with theoretical predictions. The determined analyzing power is consistent with zero for an excess energy of Q = 15 MeV signaling s wave production with no evidence for higher partial waves. At Q = 72 MeV the data reveals strong interference of P s and P p partial waves and cancellation of (P p) and Ss*Sd contributions. These results rule out the presently available theoretical predictions for the production mechanism of the {\eta} meson., Comment: Accepted for publication in Phys. Rev. Lett

Published
2017
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13. Abashian-Booth-Crowe Effect in Basic Double-Pionic Fusion: A New Resonance?

Author

Zbigniew Rudy, N. Shah, B. Lorentz, Alexander Schmidt, W. Schroeder, Ankhi Roy, P. Podkopał, A. Povtoreyko, Eryk Czerwiński, H. Stroeher, R. Maier, Roger Ruber, Harald Kleines, P. Vlasov, M. Wolke, V. Sopov, M. Bashkanov, Aleksandra Wrońska, M. Siemaszko, E. Perez del Rio, F. Kren, G. Sterzenbach, Hans Calén, P. Wurm, J. Stepaniak, K. Grigoryev, M. Hodana, D. Coderre, P. Goslawski, Andrzej Kupsc, H. P. Morsch, Kjell Fransson, H. Clement, H. Ohm, L. Jarczyk, Y. Petukhov, C. Adolph, X. Yuan, Jozef Zlomanczuk, W. Erven, O. Khakimova, G. J. Wagner, A. Taeschner, K. Lalwani, Annika Passfeld, Marek Jacewicz, J. Hampe, B. Mariański, P. Wuestner, Vadim Baru, A. Khoukaz, C. Zheng, K.-T. Brinkmann, Wojciech Krzemien, Frank Goldenbaum, C. F. Redmer, J. Klaja, Sven Kullander, P. Zupranski, A. Magiera, K. Pysz, Pawel Plucinski, W. Eyrich, T. Rausmann, James Ritman, B. Kłos, A. Pricking, Patrik Adlarson, P. Kulessa, Szymon Niedzwiecki, B. Kamys, M. Mikirtychiants, Andreas Wirzba, Bo Höistad, Magdalena Skurzok, Marcin Zieliński, S. Sawant, Günter Kemmerling, R. Siudak, W. Zipper, A. Trzciński, R. Engels, D. Prasuhn, Tomasz Bednarski, Tord Johansson, Michał Janusz, F. S. Bergmann, Hans Stockhorst, Rolf Stassen, C. Pauly, F. Hinterberger, W. Węglorz, W. Augustyniak, Carl-Oscar Gullström, J. Zabierowski, Antoni Szczurek, Christoph Hanhart, V. Serdyuk, Jerzy Smyrski, Stanisław Kistryn, C. Ekström, Pavel Marciniewski, Lena Heijkenskjöld, Paweł Moskal, V. Hejny, P. Fedorets, E. Doroshkevich, A. Jany, M. Berłowski, R. Varma, M. Buescher, T. Skorodko, T. Sefzick, A. Winnemoeller, S. Schadmand, K. Foehl, T. Tolba, L. Yurev, Benedykt R. Jany, Himani Bhatt, Basanta Kumar Nandi, N.M. Piskunov, and V. Grishina

Subjects
Nuclear physics, Physics, Particle physics, Fusion, ddc:550, General Physics and Astronomy, Nuclear fusion, Fusion power, Nuclear Experiment, Resonance (particle physics)
Abstract

We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn -> d pi(0)pi(0) over the full energy region of the ABC effect, a pronounced low-mass enhancement in the pi pi-invariant mass spectrum. The measurements, which cover also the transition region to the conventional t- channel Delta Delta process, were performed with the upgraded WASA detector setup at COSY. The data reveal the Abashian-Booth-Crowe effect to be uniquely correlated with a Lorentzian energy dependence in the integral cross section. The observables are consistent with a narrow resonance with m = 2.37 GeV, Gamma approximate to 70 MeV and I(J(P)) = 0(3(+)) in both pn and Delta Delta systems. Necessary further tests of the resonance interpretation are discussed.

Published
2011
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