Search

Your search keyword '"J. Piekarz"' showing total 68 results
Start Over Author "J. Piekarz"
68 results on '"J. Piekarz"'

12. Average transverse momentum vs. for mass-identified particles at tevatron energies

Author

S. H. Oh, A. T. Bujak, J. Piekarz, P. Cole, W. R. Robertson, S. Banerjee, W. D. Walker, C. Allen, A.S. Hirsch, J.M. LoSecco, D. Reeves, N.K. Morgan, N.T. Porile, A. T. Goshaw, F. Turkot, S.R. Stampke, D. K. Wesson, R. P. Scharenberg, E. W. Anderson, A.P. McManus, T. Alexopoulos, C. Hojvat, P. Bhat, H. Zuong, J.R. Jennings, C.S. Lindsey, M. A. Thompson, P.D. Beery, R. Debonte, A. Rimai, N.N. Biswas, V. P. Kenney, B.C. Stringfellow, H. Areti, Y. Choi, J M Bishop, V. DeCarlo, A. R. Erwin, C. Loomis, C. Findeisen, T. Carter, D.D. Carmony, T. McMahon, K. Nelson, C.H. Wang, and L.J. Gutay

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Hodoscope, Meson, Pseudorapidity, Transverse momentum, Tevatron, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, Atomic and Molecular Physics, and Optics
Abstract

The transverse momentum of charged mesons and p's produced within the pseudorapidity range of η = −0.36 to η = +1.0 and azimuthal range of φ = +2° to φ = +18° has been measured in pp collisions at √s = 1.8 TeV. The charged multiplicity of each event was measured by either the 240 element cylindrical hodoscope covering the range −3.25 < η < +3.25 or the central drift chamber, which spans a pseudorapidity range of 3.2 units. The average transverse momentum as a function of the pseudorapidity density for mass-identified particles is presented. We have observed pseudorapidity densities as high as 30 particles per unit pseudorapidity.

Published
1992
Full Text
View/download PDF

13. Average transverse momentum vs. dNc/dη for mass-identified particles at Tevatron energies

Author

T. Alexopoulos, C. Allen, E.W. Anderson, H. Areti, S. Banerjee, P.D. Beery, P. Bhat, J. Bishop, N.N. Biswas, A. Bujak, D.D. Carmony, T. Carter, P. Cole, Y. Choi, R. Debonte, V. DeCarlo, A.R. Erwin, C. Findeisen, A.T. Goshaw, L.J. Gutay, A.S. Hirsch, C. Hojvat, J.R. Jennings, V.P. Kenney, C.S. Lindsey, C. Loomis, J.M. LoSecco, T. McMahon, A.P. McManus, N.K. Morgan, K. Nelson, S.H. Oh, J. Piekarz, N.T. Porile, D. Reeves, A. Rimai, W.R. Robertson, R.P. Scharenberg, S.R. Stampke, B.C. Stringfellow, M.A. Thompson, F. Turkot, W.D. Walker, C.H. Wang, D.K. Wesson, and H. Zuong

Subjects
Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
Published
1992
Full Text
View/download PDF

14. New scintillation materials for fiber tracking and calorimetry

Author

J. Piekarz, B. Baumbaugh, A. Bross, J. Jacques, J. Marchant, Randy Ruchti, Anna Pla-Dalmau, and J. Godfrey

Subjects
Nuclear and High Energy Physics, Materials science, Nuclear Energy and Engineering, Scintillation counter, Analytical chemistry, Radiation damage, Phosphor, Irradiation, Electrical and Electronic Engineering, Scintillator, Isotopes of cobalt, Luminescence, Fluorescence
Abstract

Radiation damage studies were performed on new polystyrene-based plastic scintillators. Several samples of different multicomponent systems containing new fluorescent compounds were irradiated with a /sup 60/Co source to a 10 Mrad dose. After irradiation, the samples were annealed for ten days in oxygen and three days in air. Scintillation light output, fluorescence, and transmittance spectra were recorded at three different stages; before irradiation, immediately after irradiation, and after the annealing process. After irradiation and the annealing period, the light output of the best scintillators had decreased by 10% of their original values. >

Published
1991
Full Text
View/download PDF

15. Development and characterization of new scintillation materials for fiber tracking and calorimetry

Author

Anna Pla-Dalmau, J. Godfrey, B. Baumbaugh, A. Bross, J. Jaques, J. Marchant, J. Piekarz, and Randy Ruchti

Subjects
Physics, Nuclear and High Energy Physics, Scintillation, Physics::Instrumentation and Detectors, business.industry, Calorimetry, Scintillator, Fluorescence, chemistry.chemical_compound, chemistry, Radiation damage, Transmittance, Optoelectronics, Irradiation, Polystyrene, business, Instrumentation
Abstract

Several polystyrene-based scintillators have been prepared in the Chemistry Facility of Fermi National Accelerator Laboratory and their light yield, fluorescence, and transmittance have been studied. In addition, emission time distributions were measured and the decay time constants were determined. A radiation damage study was performed in which the samples were irradiated to a total dose of 10 Mrad. After annealing, the intrinsic light yield of the most radiation-hard scintillators had not changed significantly.

Published
1991
Full Text
View/download PDF

16. Scintillating fibers and waveguides for tracking applications

Author

E. Shibata, J. Jaques, E. Abbott, W. D. Shephard, R.S. Moore, K. Takikawa, J. Marchant, David B. Cline, C. Anway, J. M. Bishop, R. Kephart, D.S. Koltick, A. Baumbaugh, Randy Ruchti, T. Okusawa, J. Solomon, D. L. Adams, Ervin J. Fenyves, N. N. Biswas, Roy C. Chaney, D. Chrisman, P. Berge, J. Piekarz, C. D. Buchanan, John E. Elias, V. P. Kenney, H. Goldberg, A. Bross, N. M. Cason, R. Davies, B. Baumbaugh, S. Margulies, R.A. Lewis, J. Kolonko, H. Miettenen, M. D. Corcoran, H. Hammack, J. Godfrey, R. J. Mountain, O.W. Foster, I.-M. Gaillard, R. L. Wagner, D. A. Finley, M. Binkley, Anna Pla-Dalmau, M. Atac, G.A. Smith, R. Scalise, K. Kondo, Allan G Clark, R. L. McIlwain, H. Cohn, X. Huang, and S. Tkaczyk

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Optical fiber, Physics::Instrumentation and Detectors, business.industry, Attenuation length, Physics::Optics, Photodetector, Waveguide (optics), Particle detector, Photodiode, law.invention, Optics, Nuclear Energy and Engineering, law, Ultraviolet light, Optoelectronics, Electrical and Electronic Engineering, business
Abstract

A test facility to study the light-transmission properties of scintillating fiber waveguides for tracking applications in high-energy physics is being developed. A light-tight box 2 m in length has been built, and data acquisition hardware and software is in place for testing various aspects of scintillating fibers and waveguides. Scintillating fibers have been excited with radioactive sources, ultraviolet light sources, and light-emitting diodes. Various photodetectors such as photomultiplier tubes, photodiodes, charge-coupled devices and solid-state photomultipliers have been utilized to detect the transmitted light. Studies of attenuation length and transmission through splices are presented. >

Published
1991
Full Text
View/download PDF

17. A quark-gluon plasma search in p̄-p at

Author

C. Hojvat, C. Allen, W. D. Walker, E. W. Anderson, Philip L. Cole, T. Alexopoulos, L. J. Gutay, N. N. Biswas, A. Bujak, D.D. Carmony, T. Carter, K. Nelson, N. T. Porile, J. Piekarz, C. S. Lindsey, C. Loomis, A. T. Goshaw, H. Zuong, A. P. McManus, B. Stringfellow, R. Debonte, D. K. Wesson, V. P. Kenney, F. Turkot, S. H. Oh, M. A. Thompson, J. M. Bishop, V. DeCarlo, A. R. Erwin, N. Morgan, S. R. Stampke, R. P. Scharenberg, H. Areti, D.S. Koltick, A. S. Hirsch, T.R. McMahon, Y. Choi, P. D. Beery, W. R. Robertson, J. M. LoSecco, C.H. Wang, C. Findeisen, S. Banerjee, D. Reeves, and P. Bhat

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Photon, Quark–gluon plasma, Fermilab, Multiplicity (chemistry)
Abstract

We present a survey of the recent results of E-735 in its search for QGP signals at the Fermilab Collider. The basic data are the inclusive P t distributions of centrally produced π, K, p and Λ 0 as a function of total charged multiplicity in the collision; the variation of 〈P t 〉 and particle ratios are derived. Preliminary results on π-π correlations and inclusive photon production are also presented.

Published
1991
Full Text
View/download PDF

18. Mass-identified particle yields in antiproton-proton collisions at √s=1.8 TeV

Author

N. Morgan, Philip L. Cole, C. Hojvat, S. Banerjee, S. R. Stampke, A. R. Erwin, A. Bujak, V. P. Kenney, T. Carter, H. Areti, A. P. McManus, D.D. Carmony, J. M. LoSecco, A. S. Hirsch, L. J. Gutay, R. P. Scharenberg, T.R. McMahon, N. N. Biswas, Y. Choi, K. Nelson, E. W. Anderson, C.H. Wang, J. Piekarz, D. Reeves, D.S. Koltick, S. H. Oh, R. de Bonte, C. S. Lindsey, P. D. Beery, C. Findeisen, F. Turkot, A. T. Goshaw, W. D. Walker, C. Allen, T. Alexopoulos, D. K. Wesson, M. A. Thompson, N. T. Porile, and B. Stringfellow

Subjects
Baryon, Physics, Nuclear physics, Particle physics, Meson, Antiproton, Hadron, General Physics and Astronomy, Rapidity, Elementary particle, Nuclear Experiment, Particle identification, Charged particle
Abstract

In p-p collisions at √s = 1.8 TeV, the yields and the transverse momentum distributions of π±, K±, p± in the central region have been measured up to a charged particle pseudo rapidity density of (dnc/dη) ≈ 16. The dependence of the average transverse momentum on the charged particle rapidity density of the Centrally Produced Matter is presented. We observe that the increase of with increasing dn/dη is more significant for heavier particles than that for lighter particles.

Published
1990
Full Text
View/download PDF

19. Deconfinement Signature, Mass Dependence of Transverse Flow and Time Evolution in Antiproton-Proton Collisions at √s = 1.8 TeV

Author

R. P. Scharenberg, Y. Choi, S. H. Oh, R. de Bonte, C. Findeisen, T. Alexopoulos, N. Morgan, V. P. Kenney, A. P. McManus, T. Carter, C.H. Wang, N. N. Biswas, K. Nelson, H Areti, L. J. Gutay, J. M. LoSecco, D. Reeves, Philip L. Cole, C. S. Lindsey, P. D. Beery, C. Allen, E. W. Anderson, F. Turkot, J. Piekarz, S. Banerjee, A. Bujak, A. T. Goshaw, A. S. Hirsch, D.D. Carmony, T.R. McMahon, A. R. Erwin, C. Hojvat, W. D. Walker, S. R. Stampke, M. A. Thompson, N. T. Porile, B. Stringfellow, and D. K. Wesson

Subjects
Physics, Particle physics, Proton, Tevatron, Condensed Matter Physics, Deconfinement, Atomic and Molecular Physics, and Optics, Charged particle, law.invention, Nuclear physics, Pion, Antiproton, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Collider, Mathematical Physics
Abstract

The yields and the transverse momentum distributions of pions, kaons, and antiprotons produced in the central region of pp collisions at √s = 1.8 TeV at the Fermilab Tevatron collider have been measured up to a charged particle pseudo-rapidity density of approximately 20. The average transverse momentum pt as a function of dNc/dη for all three types of particles is presented. We find that transverse flow does not explain the pt separation. The most plausible interpretation is that the pt vs. Nc spectra represent in isobar in the two phase region.

Published
1990
Full Text
View/download PDF

20. Recent results from E-735 at the Fermilab tevatron proton-antiproton collider at √S = 1.8 TeV

Author

V. P. Kenney, M. A. Thompson, T. Alexopoulos, W. D. Walker, A. T. Goshaw, C. Findeisen, C.H. Wang, A. P. McManus, N. N. Biswas, H. Areti, T. McMahon, K. Nelson, F. Turkot, A. T. Bujak, J. Piekarz, W. R. Robertson, N.T. Porile, A.S. Hirsch, C. Loomis, D. K. Wesson, P. Cole, D. Reeves, P. Bhat, E. W. Anderson, S. Banerjee, Y. Choi, C. Hojvat, R. Debonte, B.C. Stringfellow, J. M. LoSecco, N.K. Morgan, D. Koltick, L.J. Gutay, J. M. Bishop, A. R. Erwin, H. Zuong, R.P. Scharenberg, S. R. Stampke, C.S. Lindsey, T. Carter, D.D. Carmony, S. H. Oh, and C. Allen

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Proton, Tevatron, Atomic and Molecular Physics, and Optics, Charged particle, law.invention, Nuclear physics, law, Antiproton, High Energy Physics::Experiment, Rapidity, Fermilab, Nuclear Experiment, Collider, Particle density
Abstract

E-735 is designed to study charged particle production in the central region of rapidity in proton-antiproton collisions at √ s = 1.8 TeV. Variations in transverse momentum and particle production ratios versus particle density are measured as a possible signature for a quack-gluon-plasma (QGP) phase transition. Preliminary results from the 1987 run are presented.

Published
1990
Full Text
View/download PDF

22. Technical design of a detector to be operated at the Superconducting Super Collider

Author

S. Segler, S. Kim, K. Amako, J.G. Jernigan, E. Erdos, M. O'Neille, D. Klokow, W. Nilsson, T. Tsuboyama, T. O'Halloran, M. Sivertz, James Nugent Bellinger, Barry Blumenfeld, I. Fujiwara, G. Baranko, R. G. Wagner, C. Hearty, H. Fujii, D. J. Summers, Jonathan Bagger, A. Elam, C. Caprio, Y. Watase, Kazumasa Miyano, R. Poling, G. Atlas, K. De, V. Myalkovsky, A.A. Omelyanenko, C.A. Corradi, J.D. Simpkins, T. K. Ohska, Philippe Eberhard, P. G. Estabrooks, M.R. Marcin, J. P. Pansart, M. Horoi, K. Tsukada, S. Kabe, T.A. Nunamaker, K. Gulamov, T. L. Watts, Kenneth J. Heller, M.E. Levi, R. W. Kadel, H. Sanders, N. Kanematsu, W. S. Toothacker, R. K. Plunkett, William S. Lockman, N. Tamura, Virgil E Barnes, G. Sullivan, D.T. Hackworth, J. Grunhaus, R. P. Thun, H. Grassman, M. Kawaguchi, R. Van Berg, Y. Chiba, J. Harmon, L. Nodulman, E. Gabathuler, T.A. Armstrong, R.L. Swensrud, S. Tkaczyk, Granville Ott, T. Emura, K. Yasuoka, Richard H. Milburn, D.I. Khubua, U. Nauenberg, R. McIlwain, H. Miyata, C. Foudas, J. T. White, D. Wu, Dixit, J. Orgeron, Sarah Catherine Eno, H.J. Krebs, Susumu Terada, T. Spassov, N.S. Amaglobeli, E.D. Minor, K. Kaneyuki, M. Pripstein, E. Peterson, G. Liang, G. Schultz, D. Blockus, J. Lackey, Tachishige Hirose, Wei-guo Li, B. Bonner, David Underwood, E. Surin, Y. Hoshi, A. Baden, M. Newcomer, K. Kondo, A. Alexa, R. E. Blair, Hui-shun Mao, David Miller, Vladimir Vinogradov, J. F. Patrick, V. J. Guarino, J. Grimson, J. J. Thaler, K. Ruddick, J. B. Dainton, Helmuth Spieler, N. N. Biswas, J. F. Martin, A. Dzierba, X. Lou, A. G. Clark, Hua-chuan Cui, A. Napier, De-qiang Huang, T.S. Yoon, A.N. Sinaev, G. G. Hanson, S.A. Gourlay, S.B. Kim, P. Le Du, M. Haney, R. N. Cahn, Y. Morita, H. M. Spinka, David E. Pellett, S. Ahmad, S.B. Gerasimov, E.N. Tsyganov, R. S. Orr, M. Nakamura, T. Iinuma, Alexander Malakhov, E.N. May, N.P. Johnson, W.Bruce Lowery, C.W. Glover, Na-ding Qi, M. Riddle, A.S. Vodopianov, Duncan Carlsmith, K. Denisenko, S. Kato, R.T. Hagstrom, J. J. Whitmore, Alan Sill, Y. Funayama, S. Godfrey, E. Barasch, A. Lim, D.W. Scherbarth, J. Hoff, B. Yuldashev, R.J. Wilkes, Leo Piilonen, Zhang Re Ju, Andrew Beretvas, A. Zinchenko, H. Courant, J. Proudfoot, J. A. Kadyk, Burke, John F. Gunion, T. J. Phillips, Larry D. Gladney, Mark Campbell, B. Foster, K. Masuda, G.P. Yeh, H. Hammack, T. Shinkawa, Tai-jie Wang, H.J. Stredde, Stephen Maxfield, Andris Skuja, Richard Nickerson, A.E. Senner, A.M. Dvornik, G.S. Gao, Liu Hong Tao, M. Mangano, C.Y. Chang, C. Campagneri, V.T. Sidorov, Robert P. Ely, M. Mishina, W. Courtney, Shuichi Kunori, S. Geer, J.A. Kulchitsky, R. Kephart, J. Mann, T. Miyachi, J. M. Hauptman, L. VanderHave, E. Poole, E. Shibata, T.B.W. Kirk, G. Punzi, R.W. Fast, K. A. Johns, A. Baumbaugh, G. H. Trilling, Richard C. Jared, P. Border, A. H. Ball, S. L. Shapiro, H. Ikeda, F.R. Huson, Hikaru Kawai, A. Menzione, G.J. Luste, D. Passuello, A. Yuldashev, A. Manabe, David H. Adams, G. Mutchler, G. Kramer, B. Byslma, M. Franklin, C. Petrascu, Motomasa Daigo, W.R. Edwards, Donald E. Groom, B. Martin, J. Millaud, J. Kilmer, Wen-xiu Gao, N. Ujiie, A. Seiden, J. Rasson, S.R. Hahn, Osamu Sasaki, P. Kesten, S. Worley, Giovanni Bellettini, R. M. Harris, R.G. Alsmiller, T. Kaneko, Richard Gray, John Perry Cumalat, S. N. White, D. Cutts, J. Wiss, R.C. Chaney, Deepa Thomas, G. J. Feldman, S. Miyashita, M. Pentia, Randy Ruchti, R. Kikuchi, Yasuo Doi, S. C. Loken, A. P.T. Palounek, Neville Harnew, Jacobo Konigsberg, J. Skeens, J. C. Freeman, Sau Lan Wu, E. Engels, H. O. Ogren, T. Gerace, W.D. Walker, A. Lee, P. Schlabach, S. Behrends, E.A. Matyushevsky, G. A. Beck, K. Hasegawa, M. Marshak, D. Nitz, Patrick Slattery, A. Srefanik, M. Strovink, Wu-guang Yan, A. B. Wicklund, B. Lu, J. Ellison, Robert Stone, J. Yoh, Ta Romanowski, T. Müller, G. Pauletta, J. Bailey, Henry Lubatti, Y. Asano, H. Yoshida, G. T. Zorn, D. Finley, A. Murakami, T. J. V. Bowcock, A.L. Litke, R. C. Ball, R. Heifetz, T Yoshida, A. Semenov, G. Alley, B. A. Barnett, L. E. Price, Vasken Hagopian, I. P. J. Shipsey, C.W. Einolf, C. Gross-Pilcher, C. Pfeiffer, N. Giokaris, Y. Unno, M. Hoff, R. J. Wilson, J. DeWitt, Lou Bing Qiao, B. Buddle, E. Barsotti, W. McGinley, G.A. Smith, J. Park, S. Kashigin, S. Zhang, M. C. Edwards, J.A. Goodman, J. Hylen, A. Para, J. Armitage, A.V. Shabunov, Geoffrey Smith, Craig Blocker, R. Foster, M. Asai, H.U. Bengtsson, M.J. Longo, Wei-ren Zhao, G. W. Foster, Yu.S. Pakhmutov, David B. Cline, T. Nash, M. Seman, R. Hubbard, D. Shuman, H. Iwasaki, Kevin Einsweiler, R.V. Tsenov, T. P. Ryan, Ph. Martin, W.A. Wenzel, R. Partridge, E. Spencer, E. E. Schmidt, Tom Zimmerman, Kurtis F Johnson, Greg P Heath, D. Hutchinson, Y. Takaiwa, M. Chiba, L. Dittert, Y. Teramoto, I. Gaines, J.K. Walker, M. Turcotte, S.K. Park, E.H. Thorndike, Hans-Joachim Ziock, R.A. Lewis, Nicholas John Hadley, N. Hill, Bruce Denby, O. Milgrome, He Yu Ming, G.H. Trilling, Daniel Pitzl, D.E. Dorfan, Lai Chu Xi, A. Liss, William T. Ford, A. Maki, P. Limon, John Huth, A.C. Amatuni, R. L. Talaga, H. Goldberg, H. A. Neal, D. Bintinger, G.H. Grayer, J. Godfrey, N. Denisenko, A. Vacchi, A. Bodek, M. Corden, Y. Zhang, W. A. Mann, V. Simaitis, D. Marschik, A. Bischoff, L.A. Vasilev, G.V. Velev, G. S. Abrams, Jason Lea Oliver, Tomiyoshi Haruyama, J. E. Elias, P. H. Fisher, P. Rankin, C. Wendt, W.R. Frisken, A. R. Erwin, R. Downing, B. P. Roe, A. T. Laasanen, A.D. Kovalenko, R.H. Wands, N. Zhuravlev, Pavel P. Povinec, T. Inagaki, Jay Hauser, J. Bishop, Norman Gee, W. Thur, B. Hubbard, W. J. Robertson, R. Koniuk, K. Niwa, Y. Sakai, A. Barbaro-Galtieri, M. D. Corcoran, S. Kan, Yue-hua Zhou, J. Mahall, K. Turdaliev, S. Kleinfelder, G. A. Snow, K. Ogawa, A. J. Lankford, I. Nakano, A. Mukerjee, L. Holloway, D. Wolfe, H.W.K. Cheung, R. Yarema, K. Abe, Z. Guzik, M. Alimov, H. D. Wahl, H. Johnstad, G. W. Brandenburg, S.H. Oh, A.B. Iordanov, K. Takikawa, H.J. Trost, M.M. Wu, Yu.V. Zanevsky, T. Ohsugi, S. Inaba, H.Richard Gustafson, J.D. Prentice, Liu-sheng Zheng, J. Ernwein, H. Mes, M. J. Shochet, J. Spalek, L. Ristori, L.W. Mo, James G. Smith, A. T. Goshaw, M. G. D. Gilchriese, J.M. Toms, V. Kaprior, T. Droege, B.Y. Oh, S.F. Heppelmann, W. Pope, E.J. Anderson, R. Loveless, Kazuhiko Hara, L. Rosenberg, T. Devlin, Liu Song Qiu, Y. Gotra, Jay Roberts, P. Kapcio, W. D. Shephard, V.I. Astakhov, Stephen Wimpenny, Vaclav Vrba, A.M. Chuenko, K. Hashim, Y. Arai, C. Grozis, Ol. Barkan, S. Errede, D.P. Coupal, M. Finger, A. J.R. Weinstein, F. Rondeaux, A. D. Bross, D. R. Rust, D.D. Reeder, J. Siegrist, Y.A. Panebratsev, R. D. Field, R. Vidal, N. Madden, E.J. Fenyves, C. C. Buchanan, Petroff, T.Y. Ling, T. Zhao, S. Hong, Y. Watanabe, M. Binkley, H. Yuta, S. Kobayashi, I. Karliner, L. E. Kirsch, T. Okusawa, G.A. Vartapetian, P. F. Shepard, S. Margulies, J. Kuzminski, K. Nishikawa, Yu.S. Gusar, M. Shioden, Dg Stairs, V. Smirnov, R. J. Hollebeek, R. G. Kellogg, D. Chrisman, R.C. Weidenbach, Aharon Levy, W. E. Slater, J. R. Bensinger, Alan Garfinkel, D.R. Nygren, P. McIntyre, B. B. Brabson, A. Pak, J. S. Brown, D. K. Hasell, F. Lobkowicz, J. Cooper, T. Takahashi, I. A. Tyapkin, J. Cherwinka, F.V. Levchanovsky, M. Takano, Lawrence W. Jones, W.A. Rowe, D.I. Hubua, Masato Higuchi, Catherine Newman-Holmes, D.S. Koltick, Paul Sheldon, Yuichi Kubota, K. Sliwa, David Bailey, B.V. Batyunya, J. Piekarz, I.V. Puzynin, R.Michael Barnett, P. Job, K.W. Hartman, B. Chiladze, Nikolai Zimine, M. Miller, D. Amidei, R. J. Cashmore, T. Nakamura, A. Jawahery, Y. Takada, M. Derrick, Ian Hinchliffe, P. Bonamy, D. Vandergriff, Gerald Oakham, L. S. Durkin, Edmond L. Berger, A.N. Sisakian, Yoshihiko Nagashima, Henry J. Frisch, Kozo Miyake, I.F. Kolpakov, Shigeru Odaka, K. Ragan, H.E. Miettinen, R. Hamatsu, Hartmut Sadrozinski, T.L. Ekenberg, S. Galeotti, V.P. Kenney, N. M. Cason, L. Bartoszek, Y.Y. Minamihara, T. Kondo, Dan Pantea, Hui-ling Ni, Marjorie Shapiro, B. Wheeler, J. Bibby, S. Homma, E. Sadowski, S. Sugimoto, S. Mori, A. Gautier, P. Sinervo, A. Hasan, V.M. Golovatyuk, K. Arisaka, H. Sakamoto, W. H. Smith, F.S. Alsmiller, J. W. Dawson, Y. N. Kharzheev, M. J. Losty, T.L. Moore, L.G. Moroz, T. Kafka, S. M. Fisher, T. Tanimori, R. Bernstein, T.H. Fields, N.B. Maksimenko, F Abe, F. Krivan, D. P. Eartly, R. Salukvadze, R. L. Wagner, J.F. Arens, K. Goulianos, Yu.F. Lomakin, K. O'Shaughnessy, Franco Bedeschi, M. Contreras, K. Takahashi, D.A. Roberts, E. Wente, D. Moore, J. Solomon, C.D. Cantrell, Yu.A. Budagov, A. Fry, A. Khaneles, P. Melese, Sh. Aliev, S. Kanda, Yoshiji Yasu, F. Luehring, R. Stanek, J. W. Chapman, H. H. Williams, C. Haber, Junichi Kanzaki, M. Atac, Trevor Collins, W. Williams, D.R. Green, M. Noumachi, D.G. Fong, R.J. Davisson, Yu.V. Ilyin, Y. Fukui, T. Humanic, J. A. J. Matthews, C. A. Heusch, S. Mani, F. Feyzi, R. Amendolia, G. Appolinari, A.I. Dokshin, Yang Ji Xiang, C.J. Kenney, A. Yamamoto, Peter Strmen, Ming-han Ye, V.H. Areti, C.Y. Fu, Sherwood Parker, P. F. Derwent, A. Nunez, Roger Rusack, Yao Shu De, and J. Nasiatka

Subjects
Physics, Schedule, Calorimeter (particle physics), Physics::Instrumentation and Detectors, business.industry, Detector, Electrical engineering, Tracking system, Superconducting magnet, Superconducting Super Collider, Nuclear physics, Data acquisition, Physics::Accelerator Physics, High Energy Physics::Experiment, Electronics, business
Abstract

This report discusses the following topics on the Soleoidal Detector Collaboration: Summary and overview of the detector; physics and detector requirements; central tracking system; superconducting magnet; calorimetry; muon system; electronics; online computing; offline computing; safety; experimental facilities; installation; test and calibration beam plan; and cost and schedule summary.

Published
1992
Full Text
View/download PDF

23. Λ0andΛ¯0Production from Proton-Antiproton Collisions ats=1.8TeV

Author

C. Findeisen, P. D. Beery, S. R. Stampke, J. Piekarz, C. H. Wang, F. Turkot, A. Bujak, A. T. Goshaw, C. Hojvat, T. Carter, D. Reeves, D.D. Carmony, W. D. Walker, N. N. Biswas, Michael A. Thompson, S. H. Oh, C. S. Lindsey, K. Nelson, A. P. McManus, N. Morgan, J. M. LoSecco, Y. Choi, S. Banerjee, and D. K. Wesson

Subjects
Physics, Antiparticle, Particle physics, General Physics and Astronomy, Lambda, Lambda baryon, Charged particle, law.invention, Baryon, Nuclear physics, Antiproton, law, Antimatter, High Energy Physics::Experiment, Nuclear Experiment, Collider
Abstract

The transverse-momentum spectra of lambdas (..lambda../sup 0/,Lambda-bar/sup 0/) produced in the central region has been measured in p-barp collisions at ..sqrt..s = 1.8 TeV at the Fermilab Collider. We find that the average transverse momentum of the lambdas increases more rapidly with center-of-mass energy than that of charged particles, and the ratio of lambdas to charged particles increases as a function of center-of-mass energy.

Published
1989
Full Text
View/download PDF

24. A measurement of π−p→K0sK0sn at 22 GeV/c and a systematic study of the 2++ meson spectrum

Author

E. D. Platner, A. C. Saulys, L.R. Fortney, A. T. Goshaw, R. Poster, M.A. Kramer, K. J. Foley, A. Etkin, V. P. Kenney, L. E. Kirsch, E. McCrory, W. A. Love, N. M. Cason, J. Goo, R. S. Longacre, J. M. Bishop, M.G. Rath, N. N. Biswas, H. Piekarz, J. Piekarz, Randy Ruchti, S.J. Lindenbaum, W. J. Robertson, W. D. Shephard, T.W. Morris, and J. R. Bensinger

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Amplitude, Meson, Spectrum (functional analysis), Channel analysis
Abstract

A coupled channel analysis has been carried out using a new amplitude analysis of the K0sK0s system produced in the reaction π−p→K0sK0sn at 22 GeV/c, which contained about 40 000 new events in the low-t region (|t−tmin

Published
1986
Full Text
View/download PDF

25. Recent results from E-735 at the Fermilab Tevatron proton-antiproton collider with √s = 1.8TeV

Author

C. S. Lindsey, D. K. Wesson, Philip L. Cole, S. H. Oh, P. D. Beery, T. Alexopoulos, L. J. Gutay, E. W. Anderson, F. Turkot, N. T. Porile, T. Carter, S. R. Stampke, V. P. Kenney, B. Stringfellow, R. P. Scharenberg, N. Morgan, A. P. McManus, A. S. Hirsch, R. Debonte, Y. Choi, T.R. McMahon, J. M. LoSecco, C.H. Wang, A. T. Goshaw, S. Banerjee, D.S. Koltick, J. Piekarz, N. N. Biswas, A. Bujak, W. D. Walker, K. Nelson, D. Reeves, H. Areti, D.D. Carmony, A. R. Erwin, C. Findeisen, C. Allen, M. Thompsons, and C. Hojvat

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Tevatron, Charged particle, Particle identification, Nuclear physics, Time of flight, Minimum bias, Antiproton, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Multiplicity (chemistry)
Abstract

E-735 is searching for signs of the quark-gluon-plasma phase transition in minimum bias proton-antiproton events. Results from the 1987 run at the Tevatron Collider at √ s = 1.8TeV are presented. Included are distributions of the average Pt versus multiplicity dependence for charged particles, and preliminary particle identification analysis using time of flight.

Published
1989
Full Text
View/download PDF

26. TheKS0KS0π0system produced inπ−pinteractions at 21.4 GeV/c

Author

E. D. Platner, P. Zogrofou, J. K. Busenitz, R. S. Longacre, R. Poster, H. Piekarz, W. D. Shephard, K. J. Foley, L.R. Fortney, J. Piekarz, T.W. Morris, M. R. Fortner, L. E. Kirsch, E. McCrory, M. A. Kramer, A. Etkin, M.G. Rath, S. J. Lindenbaum, A. C. Saulys, V. P. Kenney, Randy Ruchti, J. R. Bensinger, N. M. Cason, J. M. Bishop, N. N. Biswas, W. A. Love, and J. Goo

Subjects
Nuclear physics, Physics, Meson, Particle model, Hadron, Analytical chemistry, Pi, Radiative decay
Abstract

The /ital K//sub /ital S///sup 0/K/sub S//sup 0//pi//sup 0/ systems, a pure /ital C/=+1 state, has been studied in the reaction /pi//sup /minus//p/r arrow/K/sub S//sup 0/K/sub S//sup 0//pi//sup 0/n at 21.4GeV//ital c/. The /ital K//sub /ital S///sup 0/K/sub S//sup 0//pi//sup 0/ spectrum is significantly different from the /bar /ital KK///pi/ distribution observed in other lower-energy peripheral hadroproduction experiments. In addition to production of the /ital f//sub 1/(1285), evidence for production of the /eta/(1460) (sometimes called the /iota/(1460)) based on mass spectra and a Dalitz-plot spin-parity analysis is reported. The narrower, lower-mass state observed in other /bar /ital KK///pi/ experiments is observed weakly if at all in this experiment. Hadronic production of the /eta/(1460), which is a good glueball candidate because of its presence in /ital J///psi/ radiative decay, suggests possible mixing with the /bar /ital qq// sector.

Published
1989
Full Text
View/download PDF

27. Possible observation of a γ-transition in the Λ8Li hypernucleus

Author

J.-R. Pizzi, Jacek Pniewski, M. Bedjinian, J.-Y. Grossiord, M. J. Kudla, M. Gusakow, M. Jacquin, H. Piekarz, J. Piekarz, A. Guichard, and E. Descroix

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Hypernucleus, 01 natural sciences, Nuclear physics, Pion, Excited state, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Ground state
Abstract

The γ-rays produced by absorption of stopped K − mesons in a 9 Be target were measured in coincidence with the accompanying charged pions and π 0 mesons. The γ-line at (1.22 ± 0.04) MeV observed in coincidence with the (40–80) MeV charged pions was tentatively ascribed to a γ-transition in the Λ 8 Li hypernucleus. A possible interpretation of this line as a decay of the 1 − excited state to the 1 − ground state in Λ 8 Li is discussed.

Published
1980
Full Text
View/download PDF

28. Observation of Levels inCΛ13,NΛ14, andOΛ18Hypernuclei

Author

N. J. Colella, Martin Deutsch, H. Piekarz, R. J. Sutter, Morgan May, B. W. Mayes, S. J. Chen, Fujio Takeutchi, L. S. Pinsky, R. Cester, R. Hackenburg, R. E. Chrien, R. L. Stearns, D. Maurizio, B. Bassalleck, Youwen Xu, R. Grace, J. Piekarz, S. Bart, P.D. Barnes, E. V. Hungerford, R. A. Eisenstein, H. Palevsky, P. Pile, and W. R. Wharton

Subjects
Nuclear reaction, Physics, Meson, Nuclear Theory, Hadron, Hyperon, General Physics and Astronomy, Alternating Gradient Synchrotron, Lambda, Nuclear physics, Pion, Excited state, Atomic physics, Nuclear Experiment
Abstract

The spectra of levels in the hypernuclei /sup 13//sub ..lambda../C, /sup 14//sub ..lambda../N, and /sup 18//sub ..lambda../O, excited by 800-MeV/c kaons in the (K/sup -/,..pi../sup -/) reaction, have been observed at the Brookhaven alternating gradient Synchrotron. Data were recorded for scattering angles from 0/sup 0/ to 25/sup 0/, corresponding to momentum transfers from 50 to 330 MeV/c. The levels are interpreted in terms of a ..lambda.. hyperon coupled to a strangeness-zero nuclear core. The results provide insights into the properties of the ..lambda..-nucleon and ..lambda..-nucleus interactions.

Published
1981
Full Text
View/download PDF

29. Observation of Hypernuclear Gamma-Ray Transitions inLiΛ7andBeΛ9

Author

G. B. Franklin, Y.Y. Xue, B. Budick, Martin Deutsch, C. Maher, P. Pile, Youwen Xu, R. E. Chrien, S. Bart, J. Szymanski, R. Rieder, S. J. Chen, J. Piekarz, R. Grace, M. May, D. Maurizio, W. R. Wharton, R. L. Stearns, B. Bassalleck, H. Piekarz, P. D. Barnes, R. Hackenburg, and E. V. Hungerford

Subjects
Nuclear reaction, Physics, Particle physics, Meson, Astrophysics::High Energy Astrophysical Phenomena, Hadron, General Physics and Astronomy, Elementary particle, Hypernucleus, Lambda, Bound state, Atomic physics, Nuclear Experiment, Energy (signal processing)
Abstract

$\ensuremath{\gamma}$-ray transitions of energy 2.034 \ifmmode\pm\else\textpm\fi{} 0.023 MeV in the hypernucleus $_{\ensuremath{\Lambda}}^{7}\mathrm{Li}$ and 3.079 \ifmmode\pm\else\textpm\fi{} 0.040 MeV in the hypernucleus $_{\ensuremath{\Lambda}}^{9}\mathrm{Be}$ are observed. In both cases, the energy of the $\ensuremath{\gamma}$ ray in the hypernucleus $_{\ensuremath{\Lambda}}^{A}Z$ is very close to the energy of the first excited state of the nuclear core. The $\ensuremath{\gamma}$ rays are interpreted as arising from core transitions in the presence of the $\ensuremath{\Lambda}$ particle. The size of the shift places limits on the strength of the $\ensuremath{\Lambda}N$ spin-dependent interaction.

Published
1983
Full Text
View/download PDF

30. Evidence forι(1460)Production inπ−pInteractions at 21.4 GeV/c

Author

J. Goo, P. Zogrofou, L. E. Kirsch, R. S. Longacre, E. D. Platner, H. Piekarz, A. Etkin, E. McCrory, T.W. Morris, N. M. Cason, R. Poster, A. C. Saulys, A. T. Goshaw, M. R. Fortner, J. K. Busenitz, W. A. Love, K. J. Foley, S. J. Lindenbaum, M.A. Kramer, W. J. Robertson, Randy Ruchti, L.R. Fortney, V. P. Kenney, W. D. Shephard, N. N. Biswas, M.G. Rath, Bensinger, J. M. Bishop, and J. Piekarz

Subjects
Nuclear physics, Iota, Physics, Particle physics, Pi, General Physics and Astronomy
Published
1988
Full Text
View/download PDF

31. Observation of a γ transition in the Λ4H hypernucleus

Author

J.-R. Pizzi, H. Piekarz, J. Piekarz, J.-Y. Grossiord, A. Filipkowski, M. Bedjidian, A. Guichard, S. Majewski, and M. Gusakow

Subjects
Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hypernucleus, 01 natural sciences, Spectral line, Coincidence, Nuclear physics, Pion, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Line (formation)
Abstract

The γ spectra induced by stopped K − mesons in a 7 Li target were obtained in coincidence with the accompanying charged pions. A thorough analysis of these spectra indicates that the observed 1.09 MeV line can be ascribed to a γ transition in the 4 Λ H hypernucleus.

Published
1976
Full Text
View/download PDF

32. Upper limit for the Ξ0→Σ0γ radiative decay

Author

R. Poster, Z. Bar-Yam, J. Piekarz, N. N. Biswas, W. Kern, J. R. Bensinger, V. P. Kenney, J. P. Dowd, J. M. Bishop, L. E. Kirsch, E. McCrory, N. M. Cason, Randy Ruchti, P. Zografou, M.G. Rath, W. D. Shephard, H. Piekarz, M. R. Fortner, and L.R. Fortney

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Decay scheme, chemistry, Branching fraction, Radiative transfer, Radiative decay, chemistry.chemical_element, High Energy Physics::Experiment, Limit (mathematics), Tungsten
Abstract

We report here a new measurement of the upper limit for the branching ratio of the radiative weak decay Ξ0→Σ0γ of

Published
1988
Full Text
View/download PDF

33. Experimental observation of the Σ hypernuclei, Σ6H and Σ16C

Author

Morgan May, J. Piekarz, E. V. Hungerford, H. Piekarz, D. Maurizio, Martin Deutsch, R. A. Eisenstein, R. L. Stearns, M. J. LeVine, R. Rieder, R. Hackenburg, R. Grace, R. E. Chrien, B. W. Mayes, S. J. Chen, K. K. Sekharan, P. Pile, W. R. Wharton, Youwen Xu, S. Bart, A.D. Hancock, H. Palevsky, P.D. Barnes, C. Maher, and B. Basslleck

Subjects
Physics, Nuclear reaction, Baryon, Momentum, Nuclear and High Energy Physics, Pion, Meson, Hadron, Momentum transfer, Hyperon, Atomic physics
Abstract

The hypernuclei Σ 6 H and Σ 16 C were observed by the (K − , π + ) reaction on targets of 6 Li and liquid O, respectively, at 713 MeV/ c incident K − momentum. Structure is seen in Σ 6 H which may be interpreted in terms of particle-hole excitations similar to the previously observed states in Λ 6 Li. The inablitity to resolve individual Σ hypernuclear levels in Σ 16 C, due in part to the excitation of non-coherent states as a result of the large momentum transfer of about 130 MeV/ c , precludes the extraction of the Σ-nucleus spin-orbit potential strength. The Σ-nucleus well depth appears to be 7 to 10 MeV less than that for the Λ.

Published
1982
Full Text
View/download PDF

34. Further investigation of the γ-transitions in Λ4H and Λ4 hypernuclei

Author

J. Piekarz, Jean-Yves Grossiord, M. Jacquin, Jacek Pniewski, M. J. Kudla, E. Descroix, J.-R. Pizzi, M. Bedjidian, A. Guichard, M. Gusakow, and H. Piekarz

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, High energy, Meson, 010308 nuclear & particles physics, Nuclear Theory, 01 natural sciences, Coincidence, Nuclear physics, Pion, Photon emission, 0103 physical sciences, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Excitation
Abstract

The γ-spectra induced by stopped K− mesons in 6Li and 7Li targets in coincidence with the accompanying charged pions and π0 mesons. The γ-line at (1.04 ± 0.04) MeV observed with charged pions was identified as a γ-transition in Λ4H, whereas the γ-line at (1.15 ± 0.04)_MeV observed with π0 mesons was ascribed to a γ-transition in Λ4He. Using these new values for the excitation energies of the 1+ levels of Λ4H and Λ4He hypernuclei, the phenomenological ΛN potential for the s-state interaction was recalculated.

Published
1979
Full Text
View/download PDF

35. Observation of fisson events in mica sandwiches

Author

M. Sowinski, M. Dakowski, J. Piekarz, E. Cieslak, M. Zakrzewski, and H. Piekarz

Subjects
Fission products, Materials science, Fission, Nuclear Theory, Radiochemistry, technology, industry, and agriculture, chemistry.chemical_element, General Medicine, Uranium, Natural uranium, equipment and supplies, Neutron temperature, Physics::Geophysics, law.invention, Semiconductor detector, Nuclear physics, stomatognathic diseases, chemistry, Optical microscope, law, Mica, Nuclear Experiment
Abstract

A method is described of preparation of mica sandwiches that could be used in experiments to study the cross-section of heavy nuclei for the high-energy fission. Mica sandwiches with natural uranium, prepared by this method, were exposed to thermal neutrons from a reactor. After appropriate chemical treatment, fission fragment tracks were observed under an optical microscope. The average efficiency of observation of fission events in such sandwiches was estimated with the help of semiconductor detectors.

Published
1966
Full Text
View/download PDF

36. Production of hyperfragments from the interactions of 3.0 GeV/c and 5.0 GeV/c K− mesons with emulsion nuclei

Author

I. Herynek, M. Suk, A.P. Conway, J. Zakrzewski, V.A. Bull, K. Pniewska, T. P. Shah, T. Pniewski, A. Filipkowski, D. O'Sullivan, M. F. Votruba, R. D. Stanley, A. Montwill, A. Thompson, E.R. Fletcher, P.V. March, Jacques Lemonne, J.E. Allen, Jean Sacton, P. Allen, M. M. Kasim, M. A. Shaukat, Z. Vintr, G. Schorochoff, J. Piekarz, M. Heeran, W. T. Toner, and Dudley Davis

Subjects
Physics, Nuclear physics, Particle physics, Bromine, chemistry, Meson, Emulsion, chemistry.chemical_element, Nuclear emulsion, Nucleon
Abstract

A study has been made of the production of hyperfragments by the interactions of K−-mesons of 3.0 and 5.0 GeV/c momentum in nuclear emulsion. The observed frequencies of production, (3.0±0.1)% and (2.2±0.1)% respectively, are significantly smaller than at lower K−-meson momenta, while the range distributions show a relative increase in the number of hyperfragments of range greater than 5 µm. This increase is attributed to a larger contribution from the fragmentation process, which is especially significant at intermediate ranges [(10÷50) µm], and to greater mean ranges for the heavy hyperfragments, which broaden the peak at short ranges (⩽10 µm). The hyperfragments of range less than 10 µm are mainly heavy residual products of silver and bromine nuclei; their mass numbers differ on the average from those of the parent nuclei by about 30 and 35 nucleon masses for 3.0 and 5.0 GeV/c interactions respectively. Eight examples of π− mesonic decays of heavy hyperfragments, and one probable example of a double hyperfragment, have been observed.

Published
1966
Full Text
View/download PDF

37. Excited states of light hypernuclei

Author

B. Povh, J. Piekarz, H.G. Ritter, v Soergel, A. Bamberger, Jacek Pniewski, U. Lynen, M. A. Faessler, and H. Piekarz

Subjects
Physics, Mass number, Nuclear physics, Nuclear and High Energy Physics, Meson, Excited state, Atomic physics, Excitation, Spectral line, Line (formation)
Abstract

The γ spectra obtained with K− mesons stopped in 6Li and 7Li targets exhibited a γ line at 1.09 MeV (intensities 0.14 ± 0.02% and 0.37 ± 0.04%, respectively) which could be identified as a hypernuclear line, and a second one at 1.42 MeV (intensities 0.10 ± 0.02% and 0.04 ± 0.04%, respectively), the assignment of which is less certain. The 1.09 MeV line and the 1.42 MeV line (if this latter is, in fact, a hypernuclear one) must both be due to γ transitions in hypernuclei with mass number four. The excitation energy of 1.09 MeV, ascribed in turn to either 4ΛH∗ or 4ΛHe∗He∗, was used to recalculate the parameters of the phenomenological potentials proposed by Herndon and Tang for the Λ-N s-state interaction.

Published
1973
Full Text
View/download PDF

38. The study of nuclear fission induced by high-energy protons

Author

E. Cieslak, F. Carbonara, J. Piekarz, J. Zakrzewski, R. Brandt, and H. Piekarz

Subjects
High energy, Cold fission, Materials science, 010308 nuclear & particles physics, Neutron emission, Radiochemistry, 01 natural sciences, 7. Clean energy, nuclear reactions and scattering due to protons, nuclear fission, Nuclear physics, Nuclear fission, [PHYS.HIST]Physics [physics]/Physics archives, 0103 physical sciences, nuclei with 150, 010306 general physics
Abstract

Cross-sections for binary fission of uranium, bismuth, lead, gold, and some lighter elements have been determined, using the mica sandwich technique, for proton energies between 0.59 and 23 GeV.

Published
1972
Full Text
View/download PDF

39. Spectroscopy of the hypernucleus Λ12C

Author

H. Piekarz, K. Kilian, A. P. Wagner, U. Lynen, H.W. Siebert, B. Pietrzyk, A.H. Walenta, G. Heinzelmann, J. Piekarz, B. Schürlein, Bogdan Povh, V. Soergel, M. A. Faessler, and H.G. Ritter

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Pion, Spectrometer, Nuclear Theory, Binding energy, Particle, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Spectroscopy, Hypernucleus
Abstract

Kaons were stopped in a 12 C target. The momenta of pions accompanying the kaon interactions were measured with a magnetic spectrometer. States in Λ 12 C with binding energies of the Λ particle of 11 ± 1 MeV and 0 ± 1 MeV have been observed.

Published
1973
Full Text
View/download PDF

40. Observation of γ-rays from the excited states of hypernuclei

Author

H.G. Ritter, M.A. Faessler, A. Bamberger, B. Povh, J. Pniewski, J. Piekarz, U. Lynen, H. Piekarz, and V. Soergel

Subjects
Physics, Nuclear and High Energy Physics, Excited state, Atomic physics, Spectroscopy
Abstract

The spectroscopy of γ-rays following the K − capture in 6 Li and 7 Li gave an evidence for the hyper-nuclear γ transitions ascribed to excited states of Γ 4 H of Γ 4 He.

Published
1971
Full Text
View/download PDF

41. Observation of antiprotonic atoms

Author

J. Piekarz, H. Koch, A. Bamberger, H. Piekarz, W.D. Hamilton, U. Lynen, H.G. Ritter, G. Backenstoss, J. Egger, B. Povh, and T. Bunaciu

Subjects
Physics, Nuclear and High Energy Physics, Magnetic moment, Proton, Spectral line, Nuclear physics, Photon emission, Cascade, Antiproton, Physics::Accelerator Physics, High Energy Physics::Experiment, Physics::Atomic Physics, Atomic physics, Nuclear Experiment, Antiprotonic helium
Abstract

X-rays originating from the antiprotonic cascade have been observed for several elements. From the energies of the measured antiprotonic transitions of 81Tl, the mass of the antiproton could be determined to ve 938.3±0.5 MeV. With this result the masses of the antiproton and the proton are equal within 0.5 MeV with a confidence of 68%. The magnetic moment of the antiproton shows up in a broadening of the n = 10 → n = 9 transition.

Published
1970
Full Text
View/download PDF

42. Mass Identified Particle Yields in Antiproton-Proton Collisions at √s = 1.8 TeV

Author

T. Alexopoulos, C. Allen, E. W. Anderson, H. Areti, S. Banerjee, P. D. Beery, N. N. Biswas, A. Bujak, D. D. Carmony, T. Carter, P. Cole, Y. Choi, R. De Bonte, A. Erwin, C. Findeisen, A. T. Goshaw, L. J. Gutay, A. S. Hirsch, C. Hojvat, V. P. Kenney, D. Koltick, C. S. Lindsey, J. M. LoSecco, T. McMahon, A. P. McManus, N. Morgan, K. Nelson, S. H. Oh, J. Piekarz, N. T. Porile, D. Reeves, R. P. Scharenberg, B. C. Stringfellow, S. R. Stampke, M. Thompson, F. Turkot, W. D. Walker, C. H. Wang, and D. K. Wesson

Published
1989
Full Text
View/download PDF

44. Multiplicity dependence of the transverse-momentum spectrum for centrally produced hadrons in antiproton-proton collisions at sqrt s =1.8 TeV

Author

V. P. Kenney, E. W. Anderson, Y. Choi, L. J. Gutay, S. R. Stampke, Andrew S. Hirsch, C. H. Wang, C. Hojvat, H. Areti, A. T. Goshaw, R. P. Scharenberg, D. K. Wesson, A. P. McManus, J. Piekarz, R. de Bonte, D.D. Carmony, P. D. Beery, T.R. McMahon, F. Turkot, W. D. Walker, C. Findeisen, J. M. LoSecco, Michael A. Thompson, S. H. Oh, D. Reeves, C. S. Lindsey, A. R. Erwin, N. Morgan, Sudeshna Banerjee, N. N. Biswas, K. Nelson, T. Carter, A. Bujak, Philip L. Cole, D.S. Koltick, N. T. Porile, B. Stringfellow, C. Allen, and T. Alexopoulos

Subjects
Physics, Particle physics, Hadron, General Physics and Astronomy, Elementary particle, Charged particle, Nuclear physics, Hodoscope, Antiproton, Pseudorapidity, Transverse momentum, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment
Abstract

The transverse momentum of charged particles produced within the pseudorapidity range eta = -0.36 to +1.0 has been measured in p-barp collisions at ..sqrt..s = 1.8 TeV. The charged-particle multiplicity of each event was measured with a 240-element cylindrical hodoscope system covering the range -3.25

Published
1988

45. Hadroproduction of the iota meson observed in the KsKsπ0 final state

Author

J. Goo, P. Zogrofou, M. A. Kramer, J. M. Bishop, L. R. Fortney, R. Poster, V.P. Kenney, J. Piekarz, H. Piekarz, R. S. Longacre, A. T. Goshaw, M. R. Fortner, N. N. Biswas, S. J. Lindenbaum, A. C. Saulys, W. A. Love, A. Etkin, Presented by Neal M. Cason, E. McCrory, M.G. Rath, J. K. Busenitz, J.R. Bensinger, W. D. Shephard, Randy Ruchti, K. J. Foley, L. E. Kirsch, W. J. Robertson, N. M. Cason, T.W. Morris, and E. D. Platner

Subjects
Nuclear physics, Physics, Particle physics, Meson, Radiative decay, Mass spectrum, Dalitz plot, State (functional analysis), Inelastic scattering
Abstract

Results from an experiment studying the C=+1 KsKsπ0 system produced in π−p interactions at 21.4 GeV/c are presented. It is shown that the structure present in the data between 1.4 and 1.5 GeV/c2 has mass and width consistent with the ι(1460) observed in J/Ψ radiative decay and most probably has JPC=0−+.

Published
1989
Full Text
View/download PDF

46. Studies of beam induced radiation for experiment 735 at the CO interaction region and its effect on detector components

Author

C. Hojvat, A. T. Bujak, J. Piekarz, F. Turkot, C.S. Lindsey, W. Anderson, and N. Biswas

Subjects
Physics, Physics::Instrumentation and Detectors, business.industry, Particle accelerator, Radiation, Scintillator, Particle detector, law.invention, Nuclear physics, Optics, law, Scintillation counter, Ionization chamber, Electromagnetic shielding, business, Background radiation
Abstract

A series of measurement is reported that were conducted to evaluate the amount of radiation present in the Fermilab Collider tunnel under different circumstances. Also to be determined is the effect of radiation on scintillators, phototubes, and their electronics, possible damage to drift chamber wires due to high counting rates and possible damage to the drift chamber electronics. Background and resulting trigger rates are evaluated and the effect of local shielding is studied. Results of radiation measurements made during beam-on operation are presented. The detectors used include: two arrays of LiF crystal dosemeters, three scintillation counter telescopes, a modified ion chamber, and six sample pieces of Bicron plastic scintillators. (LEW)

Published
1985
Full Text
View/download PDF

47. EXCITED STATES OF HYPERNUCLEI

Author

M.A. Faessler, J. Pniewski, A. Bamberger, V. Soergel, U. Lynen, H.G. Ritter, J. Piekarz, H. Piekarz, and B. Povh

Subjects
Physics, Nuclear physics, Annihilation, Excited state, Bubble, Time resolution
Abstract

Publisher Summary The experimental investigation of hypernuclei has been done using emulsions and bubble chambers; therefore, with only two exemptions, all the knowledge concerns hypernuclear ground states. This chapter focuses on the excited states of hypernuclei. The investigation of excited states is only possible using counter techniques, but these experiments could not be performed because of the low intensity of available K¯-beams. The main difficulties of an experiment looking for hypernuclear γ-transitions result from the small production cross-sections of hypernuclei and the high background produced by the annihilation of the K¯-mesons. Most disturbing are the γ-rays emitted from the residual nucleus or any of its fragments and therefore, only light target nuclei have been investigated. For the detection of hypernuclear γ-transitions, NaI-crystals were chosen not only because of their good time resolution but also because of their high photopeak detection-efficiency.

Published
1972
Full Text
View/download PDF

48. Phytochemicals in the treatment of patients with depression: a systemic review.

Author

Picheta N, Piekarz J, Daniłowska K, Mazur K, Piecewicz-Szczęsna H, and Smoleń A

Abstract

Background: Depression is a complex mental disease whose incidence increases every year; 300 million people worldwide currently suffer from it. Women are more likely to suffer from depression, twice the rate as men. It is one of the few illnesses that can lead to suicide, which makes it very dangerous - currently, 700,000 people die from suicide and it is the 4th most common cause of death in people aged 15-29. The treatment strategies for depression is a big challenge for physicians, pharmacists, scientists and classic remedies cause many side effects. Therefore, natural phytotherapy with herbs can prove to be a good solution. Phytotherapy is a popular treatment method used for centuries in Chinese medicine or Ayurveda., Materials and Methods: The study conducted a comprehensive database search PubMed, ClinicalKey and MedNar covered the years 2015 - 2024 to provide the most up-to-date data. 13 randomized controlled trials and 1 meta - analysis were included in the systematic review., Results: Many plants show anti-inflammatory, antioxidant and cognitive enhancing effects, which are particularly important in depression. In the treatment of depression, plants such as Crocus sativus L. stigma , Lavandula angustifolia, Hypericum perforatum L. and Curcuma longa L . have proven to be effective. They show good effectiveness in human studies and alleviate the symptoms of depression. Herbal products can support classical pharmacotherapy, but this requires further research. Non-commercial clinical trials in the future should provide answers to research questions: at what stage of treatment of patients with MDD will the use of phytochemicals be most appropriate in terms of therapy efficacy and safety for the patient., Conclusions: Crocus sativus L. stigma , Lavandula angustifolia, Hypericum perforatum L. and Curcuma longa L . in modern medicine can help improve the well-being of patients with depression. The use of herbs as an intervention was associated with a decrease in the concentration of proinflammatory cytokines and an overall improvement in the mood of patients. Further research should be undertaken into combining both therapies in order to improve patients' quality of life and reduce treatment costs., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Picheta, Piekarz, Daniłowska, Mazur, Piecewicz - Szczęsna and Smoleń.)

Published
2024
Full Text
View/download PDF

49. Phytotherapy in Alzheimer's Disease-A Narrative Review.

Author

Piekarz J, Picheta N, Burdan O, Kurek M, and Chrościńska-Krawczyk M

Abstract

Alzheimer's disease (AD) affects 50-70% of patients with dementia, making it the leading cause of dementia. The condition is classified as a neurodegenerative, progressive and incurable disease. The disease is affecting more and more people around the world. AD has a multifactorial nature, spreading from beta-amyloid deposition to inflammation in patients' brains. Patients experience cognitive impairment and functional decline. Although it is a disease that occurs mainly in the elderly, it is increasingly being diagnosed in young people between the ages of 30 and 40. It not only affects the patient themself but also reduces the quality of life of their closest caregivers. According to the WHO, the treatment of AD consumes USD 1.3 trillion globally, but it is only symptomatic, as there are no drugs to prevent the onset of AD or treat the cause of its onset. Due to the numerous side effects of therapy and the lack of proactive drugs that act on the pathomechanism of AD, alternative therapies are being sought. One possible option that has many studies confirming its effect is phytotherapy. Many herbs have pharmacological properties, such as antioxidant, anti-inflammatory, or neuroprotective effects, making them the future of cognitive disorders and AD treatment. This review focuses on some of the most promising herbs that have potentially potent properties and effects in AD therapy. These include Curcuma longa , Panax ginseng , Berberis and Crocus sativus . These herbs may perhaps be key in the future to make functioning and life easier for patients struggling with AD.

Published
2024
Full Text
View/download PDF

50. New Pharmacological Therapies in the Treatment of Epilepsy in the Pediatric Population.

Author

Daniłowska K, Picheta N, Żyła D, Piekarz J, Zych K, and Gil-Kulik P

Abstract

Epilepsy is a disorder characterized by abnormal brain neuron activity, predisposing individuals to seizures. The International League Against Epilepsy (ILAE) categorizes epilepsy into the following groups: focal, generalized, generalized and focal, and unknown. Infants are the most vulnerable pediatric group to the condition, with the cause of epilepsy development being attributed to congenital brain developmental defects, white matter damage, intraventricular hemorrhage, perinatal hypoxic-ischemic injury, perinatal stroke, or genetic factors such as mutations in the Sodium Channel Protein Type 1 Subunit Alpha ( SCN1A ) gene. Due to the risks associated with this condition, we have investigated how the latest pharmacological treatments for epilepsy in children impact the reduction or complete elimination of seizures. We reviewed literature from 2018 to 2024, focusing on the age group from 1 month to 18 years old, with some studies including this age group as well as older individuals. The significance of this review is to present and compile research findings on the latest antiseizure drugs (ASDs), their effectiveness, dosing, and adverse effects in the pediatric population, which can contribute to selecting the best drug for a particular patient. The medications described in this review have shown significant efficacy and safety in the studied patient group, outweighing the observed adverse effects. The main aim of this review is to provide a comprehensive summary of the current state of knowledge regarding the newest pharmacotherapy for childhood epilepsy.

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results