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5 results on '"S. Szafran"'

1. Production of hyperons and anti-hyperons in heavy-ion collisions at SPS: Experiments at the CERN Omega spectrometer

Author

G. Romano, A. Volte, Leonardo Paolo Rossi, Håvard Helstrup, R. Lietava, G. Vassiliadis, M. Morando, N. Carrer, P. Middelkamp, Anton Jusko, J.A. Lien, B. Sopko, T. Storås, Gunnar Løvhøiden, K.L. Norman, F. Posa, I. Králik, A. Di Mauro, Petr Zavada, J. Šťastný, M. Luptak, Vito Manzari, Paolo Martinengo, O. Villalobos Baillie, R. A. Ricci, V. Lenti, G.F. Segato, M. Vaníčková, J.B. Kinson, Rocco Caliandro, C. Salvo, Giovanni Darbo, J. Ftacnik, Jean-Charles Fontaine, E. Quercigh, A. Kirk, J. Bohm, G. Grella, E. Chesi, Bianca Osculati, T. Virgili, A. Diaczek, M. Venables, H. Rotscheidt, S. Simone, W. Beusch, C. Voltolini, M.E. Michalon-Mentzer, S. Saladino, J. P. Davies, K. Šafařík, V.A. Kachanov, K. Knudson, A.K. Holme, Alberto Andrighetto, D. Huss, P. Sennels, R. A. Fini, T. Kachelhoffer, A. Michalon, F. Pellegrini, S. Szafran, A. Jacholkowski, M. T. Muciaccia, N. Armenise, Michele Guida, K. Piska, J. C. Lassalle, Gianfranca De Rosa, W. Geist, P. Sené, K. Fanebust, L. Sandor, T.F. Thorsteinsen, D. Elia, J. Bán, P. Jovanovic, E. Nappi, David H. Evans, M. G. Catanesi, I. Mácha, Dario Barberis, A. Singovski, M. Dameri, Franco Meddi, T. Scognetti, Federico Antinori, Erik H.M. Heijne, D. Di Bari, Eugenio Cantatore, M. A. Mazzoni, B. Ghidini, E. Andersen, F. Navach, M. Sené, M. Campbell, G. Tomasicchio, J. Urban, M.F. Votruba, W. Klempt, H. Beker, V. Mack, Pavel Staroba, R. A. Loconsole, S. Di Liberto, B. Pastirčák, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), WA97, and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Strange quark, Large Hadron Collider, Spectrometer, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Theory, Hyperon, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Omega, Atomic and Molecular Physics, and Optics, Nuclear physics, Heavy ion, Nuclear Experiment
Abstract

Recent results from the CERN Omega spectrometer on the enhancement of strange and multiply strange particle production in nucleus-nucleus with respect to proton-nucleus collisions are summarized. In particular, the new data from the WA97 experiment on Ω, Ξ and Λ production in PbPb and p-Pb collisions are presented and discussed.

Published
1999
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2. A, Ξ and Ω enhancement at central rapidity in Pb-Pb collisions at 158A GeV/ c

Author

Rocco Caliandro, A. Diaczek, K. Fanebust, J. Urban, B.T.H. Knudsen, A. Singovski, Federico Antinori, Michael A. Thompson, S. Saladino, A.K. Holme, G. Tomasicchio, N. Carrer, Eugenio Cantatore, M. A. Mazzoni, Leonardo Paolo Rossi, B. Ghidini, G. Rosa, Erik H.M. Heijne, G. Vassiliadis, G. Romano, J. C. Lassalle, J.B. Kinson, T.F. Thorsteinsen, D. Di Bari, V. Lenti, Giovanni Darbo, E. Chesi, Bianca Osculati, M. Morando, C. Salvo, M. Dameri, Pavel Staroba, M.F. Votruba, F. Navach, N. Armenise, Anton Jusko, K. Piska, E. Andersen, W. Klempt, Eugenio Nappi, H. Bakke, Michele Guida, F. Posa, Petr Zavada, K. Šafařík, Franco Meddi, D. Elia, A. Jacholkowski, I. Králik, Haavard Helstrup, Paolo Martinengo, T. Scognetti, W. Snoeys, M. Sené, M. Campbell, J. Bán, Dario Barberis, T. Virgili, A. Kirk, B.C. Earl, S. Simone, W. Beusch, A. Volte, R. Lietava, R. Sené, K. Knudson, O. Villalobos Baillie, R. A. Ricci, I. J. Bloodworth, H. Beker, D. Huss, V. Mack, P. Middelkamp, Vito Manzari, David H. Evans, M. G. Catanesi, S. Di Liberto, B. Pastirčák, R. A. Loconsole, J. Ftacnik, Giorgio Torrieri, M. T. Muciaccia, Trine Spedstad Tveter, V.A. Kachanov, P.I. Norman, G. T. Jones, P. Jovanovic, Gunnar Løvhøiden, L. Šándor, F. Pellegrini, R. A. Fini, A. Michalon, J. Bohm, M. Venables, M. Luptak, G.F. Segato, E. Quercigh, M.E. Michalon-Mentzer, Jean-Charles Fontaine, S. Szafran, H. Rotscheidt, T. Kachelhoffer, and G. Grella

Subjects
Nuclear physics, Physics, Particle physics, Nuclear Theory, Quark–gluon plasma, Hyperon, Transverse mass, Rapidity, Strangeness, Nuclear Experiment, Omega, Spectral line
Abstract

A, Ξ and Ω yields and transverse mass spectra have been measured in Pb-Pb and p-Pb collisions at 158A GeV/c. The yields in Pb-Pb interactions are presented as a function of the collision centrality and compared with those obtained from p-Pb collisions. Strangeness enhancement is observed which increases with centrality and with the strangeness content of the hyperon.

Published
1998
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3. Λ, Ξ and Ω production in PbPb collisions at 158 A GeV/c

Author

Michael A. Thompson, S. Saladino, A.K. Holme, Dario Barberis, J. C. Lassalle, Petr Zavada, D. Di Bari, Gunnar Løvhøiden, M. T. Muciaccia, M. Morando, S. Simone, R. A. Fini, L. Šándor, F. Pellegrini, Anton Jusko, G. Grella, K. Knudson, W. Beusch, R. A. Loconsole, N. Carrer, V.A. Kachanov, A. Michalon, S. Szafran, A. Di Mauro, D. Huss, M.E. Michalon-Mentzer, I. Králik, P. Middelkamp, Giovanni Darbo, Paolo Martinengo, M. Luptak, G.F. Segato, F. Posa, E. Quercigh, J. Ftacnik, E. Chesi, Rocco Caliandro, P. Jovanovic, A. Kirk, Trine Spedstad Tveter, G. Romano, A. Singovski, E. Andersen, N. Armenise, W. Snoeys, B. Ghidini, H. Beker, T.F. Thorsteinsen, G. Rosa, H. Rotscheidt, David H. Evans, Jean-Charles Fontaine, P.I. Norman, G. T. Jones, M. Dameri, M. G. Catanesi, Vito Manzari, J. Bohm, V. Mack, J. Bán, Franco Meddi, M. Sené, A. Diaczek, F. Navach, M. Campbell, S. Di Liberto, A. Jacholkowski, M. Venables, T. Kachelhoffer, G. Tomasicchio, Leonardo Paolo Rossi, O. Villalobos Baillie, R. A. Ricci, B. Pastirčák, T. Scognetti, Pavel Staroba, M.F. Votruba, W. Klempt, Eugenio Nappi, Federico Antinori, Erik H.M. Heijne, J. Urban, K. Fanebust, B. Osculati, M.A. Mazzoni, E. Cantatore, J.B. Kinson, A. Volte, R. Lietava, R. Sené, K. Piska, D. Elia, T. Virgili, I.G. Bloodworth, V. Lenti, Michele Guida, C. Salvo, Håvard Helstrup, G. Vassiliadis, and K. Šafařík

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Silicon pixel detectors, Hyperon, Spectral line, Baryon, Nuclear physics, Particle, Transverse mass, Rapidity, Quark Gluon Plasma, Nuclear Experiment
Abstract

Enhanced production of strange baryons and anti-baryons at central rapidity in S-W and S-z.sbnd;S with respect to p-A reactions has been reported by the CERN experiments WA85 and WA94. The WA97 experiment is extending such a study to Pb Pb collisions making use of the newly developed silicon pixel detectors. Results on Λ, Ξ − and Ω − production in Pb Pb collisions at 158 A GeV/ c at central rapidity are presented. Transverse mass spectra and particle ratios are presented. Hyperon yields are given as a function of the collision centrality and compared with those obtained from p-Pb collisions using the same experimental setup.

Published
1998
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4. Hyperon production in Pb+Pb collisions at 158 A GeV/c

Author

S. Szafran, Anton Jusko, N. Armenise, Michele Guida, I. Králik, P. Jovanovic, S. Simone, K. Šafařík, Ph. Leruste, H. Helstrup, J. Ftacnik, P. Middelkamp, J. Bán, Paolo Martinengo, E. Nappi, N. Carrer, Leonardo Paolo Rossi, C. Voltolini, Federico Antinori, Håvard Helstrup, Pavel Staroba, Vito Manzari, J.A. Lien, G. Vassiliadis, V. Lenti, K. Fanebust, M. Luptak, G.F. Segato, Eugenio Cantatore, J. Šťastný, K. Knudson, M. Vaníčková, M. A. Mazzoni, S. Di Liberto, L. Lopez, B. Ghidini, A. Singovski, W. Geist, Erik H.M. Heijne, M. Morando, A. Jacholkowski, J.M. Brom, E. Quercigh, R. Blaes, P. Sennels, F. Posa, G. Romano, A. Volte, R. Lietava, R. Sené, B. Pastirčák, A.K. Holme, Alberto Andrighetto, G. Grella, K. Piska, J. L. Narjoux, T.F. Thorsteinsen, E. Andersen, Jean-Charles Fontaine, H. Rotscheidt, F. Navach, M. Dameri, D. Elia, L. Šándor, F. Pellegrini, M. T. Muciaccia, J. P. Davies, O. Villalobos Baillie, R. A. Ricci, David H. Evans, J. C. Lassalle, Petr Zavada, C. Salvo, I. Mácha, Dario Barberis, A. Di Mauro, K.L. Norman, G. Tomasicchio, Giovanni Darbo, V.A. Kachanov, T. Kachelhoffer, E. Chesi, Bianca Osculati, T. Storås, A. Kirk, M. G. Catanesi, B. R. French, M. Sené, B. Sopko, M. Campbell, A. Diaczek, M.E. Michalon-Mentzer, M.F. Votruba, W. Klempt, Franco Meddi, P. Farthouat, J. Bohm, T. Scognetti, J. Urban, H. Beker, J.B. Kinson, M. Venables, Gunnar Løvhøiden, V. Mack, R. A. Fini, A. Michalon, T. Virgili, W. Beusch, D. Huss, M. Benayoun, G. Rosa, and D. Di Bari

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Strange quark, Proton, Hadron, Hyperon, General Physics and Astronomy
Abstract

Preliminary results from WA97 measurements on Λ, Ξ and Ω production in lead-lead and proton-lead collisions are presented, along with a comparison of WA97 proton-lead data with previous WA85 proton-tungsten results. The ratio Ω/Ξ seems to be enhanced in lead initiated reactions compared to proton initiated reactions.

Published
1996
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5. Enhancement of central Λ, Ξ and yields in Pb-Pb collisions at 158 A GeV/c

Author

A. Kirk, M.T. Muciaccia, Giorgio Torrieri, A. Singovski, G. Grella, F. Navach, J.B. Kinson, F. Posa, Jean-Charles Fontaine, David H. Evans, S. Szafran, B.T.H. Knudsen, Michele Guida, S. Simone, E. Andersen, Eugenio Cantatore, Federico Antinori, Trine Spedstad Tveter, R.A. Loconsole, M. G. Catanesi, M. Morando, Petr Zavada, B. Ghidini, M. Dameri, Rocco Caliandro, P.I. Norman, Michael A. Thompson, Erik H.M. Heijne, S. Saladino, N. Carrer, G. T. Jones, H. Bakke, W. Beusch, H. Rotscheidt, K. Piska, Gunnar Løvhøiden, A.K. Holme, Anton Jusko, M. Sené, M. Campbell, A. Diaczek, M.E. Michalon-Mentzer, I. J. Bloodworth, V. Lenti, D. Huss, P. Jovanovic, R. A. Fini, Dario Barberis, T. Virgili, H. Beker, P. Middelkamp, O. Villalobos Baillie, R. A. Ricci, K. Fanebust, E. Nappi, J. Urban, A. Michalon, T. Kachelhoffer, J. Bohm, A. Volte, B.C. Earl, I. Králik, N. Armenise, M.A. Mazzoni, Walter Snoeys, Davide Elia, M. Venables, V. Mack, Vito Manzari, R. Lietava, R. Sené, M. Luptak, G.F. Segato, Domenico Di Bari, Paolo Martinengo, K. Knudson, G. Tomasicchio, L. Šándor, A. Jacholkowski, F. Pellegrini, E. Quercigh, Franco Meddi, V.A. Kachanov, G. Romano, M.F. Votruba, T. Scognetti, W. Klempt, G. Rosa, Pavel Staroba, T.F. Thorsteinsen, Haavard Helstrup, J. Bán, Giovanni Darbo, E. Chesi, Bianca Osculati, K. Šafařík, Leonardo Paolo Rossi, G. Vassiliadis, C. Salvo, J. C. Lassalle, S. Di Liberto, B. Pastirčák, and J. Ftacnik

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Hyperon, Hyperons, Strangeness, 01 natural sciences, Spectral line, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, Transverse mass, Quark Gluon Plasma, Nuclear Experiment, 010306 general physics
Abstract

Λ, Ξ and Ω yields and transverse mass spectra have been measured in Pb-Pb and p-Pb collisions at 158 A GeV/c. The yields in Pb-Pb interactions are presented as a function of the collision centrality and compared with those obtained from p-Pb collisions. Strangeness enhancement is observed which increases with centrality and with the strangeness content of the hyperon.

Published
1998

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