Search

Your search keyword '"R. A. Loconsole"' showing total 31 results
Start Over Author "R. A. Loconsole"
31 results on '"R. A. Loconsole"'

1. Enhancement of hyperon production at central rapidity in 158AGeV/cPb–Pb collisions

Author

NA57 Collaboration, F Antinori, P Bacon, A Badalà, R Barbera, A Belogianni, W Beusch, I J Bloodworth, M Bombara, G E Bruno, S A Bull, R Caliandro, M Campbell, W Carena, N Carrer, R F Clarke, A Dainese, D Di Bari, S Di Liberto, R Divià, D Elia, D Evans, G A Feofilov, R A Fini, P Ganoti, B Ghidini, G Grella, H Helstrup, K F Hetland, A K Holme, D Huss, A Jacholkowski, G T Jones, P Jovanovic, A Jusko, R Kamermans, J B Kinson, K Knudson, V Kondratiev, I Králik, A Kravčáková, P Kuijer, V Lenti, R Lietava, R A Loconsole, G Løvhøiden, V Manzari, M A Mazzoni, F Meddi, M E Michalon-Mentzer, A Michalon, M Morando, P I Norman, A Palmeri, G S Pappalardo, B Pastirčák, R J Platt, E Quercigh, F Riggi, D Röhrich, G Romano, K Šafařík, L Šándor, E Schillings, G Segato, M Sené, R Sené, W Snoeys, F Soramel, M Spyropoulou-Stassinaki, P Staroba, M Thompson, R Turrisi, T S Tveter, J Urbán, P van de Ven, P Vande Vyvre, A Vascotto, T Vik, O Villalobos Baillie, L Vinogradov, T Virgili, M F Votruba, J Vrláková, P Závada, 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), and NA57

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Nuclear Theory, Hyperon, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Strangeness, Lambda, 01 natural sciences, Omega, Nuclear physics, 0103 physical sciences, Transverse momentum, Rapidity, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Nucleon, Nuclear Physics
Abstract

Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions., submitted to J. Phys. G.: Nucl. Part. Phys

Published
2006
Full Text
View/download PDF

2. Further analysis of a direct soft photon excess in π−p interactions at 280 GeV/c

Author

Irakli Minashvili, V. Lenti, A. Kirk, N.A. Russakovich, P. Sonderegger, A. Jacholkowski, Vito Manzari, W. Beusch, B. R. French, G. Tchlatchidze, J.B. Kinson, I. Vichou, T. J. Brodbeck, O. Villalobos Baillie, David H. Evans, G. Vassiliadis, V.F. Perepelitsa, R. A. Loconsole, M. Spyropoulou-Stassinaki, P. Ganoti, and A. Belogianni

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, Photon, Soft photon, Meson, Bremsstrahlung, Astrophysics::High Energy Astrophysical Phenomena, Elementary particle, Electromagnetic radiation, Soft photons, Nuclear physics, Massless particle, Pion, π−p interactions, Photon excess, High Energy Physics::Experiment, Nuclear Experiment
Abstract

In this Letter we present additional experimental characteristics of anomalous soft photon radiation observed in π−p interactions at 280 GeV/c in the CERN experiment WA91, together with a re-calculated ratio of the observed direct soft photon signal to the expected level of the hadronic inner bremsstrahlung, which is found to be 5.3±1.0. The other presented characteristics, energy dependence and angular distributions of direct soft photons, show the similarity of the observed signal to the expected hadronic bremsstrahlung behaviour.

Published
2002
Full Text
View/download PDF

3. 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
Full Text
View/download PDF

4. 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
Full Text
View/download PDF

5. 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
Full Text
View/download PDF

6. Hyperon production in proton-sulphur interaction at 200 GeV/c

Author

S. Abatzis, J. Ftáĉnik, V. Lenti, K. Knudson, P. Ladron de Guevara, J. Urban, N. Carrer, M. Venables, J. N. Carney, Domenico Elia, V. A. Katchanov, Federico Antinori, O. Villalobos Baillie, J. L. Narjoux, R. A. Ricci, A. V. Singovsky, A. C. Bayes, M. Morando, E. Andersen, G.F. Segato, L. Sandor, E. Quercigh, K. Šafařík, M. Sené, T.F. Thorsteinsen, A. Volte, Ph. Leruste, J. P. Davies, J. Bohm, R. Lietava, R. Sené, K.L. Norman, D. Di Bari, F. Pellegrini, Petr Zavada, K. Fanebust, Håvard Helstrup, A. Kirk, A. Jacholkowski, B. De La Cruz, W. Beusch, J.B. Kinson, G. Løvhøiden, B. Ghidini, G. Vassiliadis, J. Kahane, M. Benayoun, F. Navach, A.K. Holme, Alberto Andrighetto, M.F. Votruba, David H. Evans, V. Manzari, R. A. Loconsole, R. Fini, J. C. Lassalle, B. R. French, Ivan Kralik, and P. Sennels

Subjects
Physics, Nuclear and High Energy Physics, Strange quark, High Energy Physics::Phenomenology, Hyperon, General Physics and Astronomy, Elementary particle, Lambda baryon, Xi baryon, Nuclear physics, Baryon, Strange matter, Transverse mass, Nuclear Experiment
Abstract

The WA94 collaboration uses the production of strange and anti-strange particles to investigate the properties of hot hadronic matter created in heavy-ion interactions. Λ,\(\bar \Lambda \), Ξ− and\(\bar \Xi ^ + \) particle yields and transverse mass spectra are presented for pS interactions and are compared with those for SS interactions and for the pW and SW interactions of WA85.

Published
1996
Full Text
View/download PDF

7. Strangeness production in p+W and S+W Interactions at 200 A GeV/c

Author

David H. Evans, B. R. French, Leonardo Paolo Rossi, T. Storås, R. A. Loconsole, J. C. Lassalle, W. Beusch, Ph. Leruste, M. Benayoun, F. Navach, A. Volte, R. P. Barnes, R. Sené, V. Lenti, J. L. Narjoux, M. Venables, B. Ghidini, K. Knudson, J. N. Carney, V. Manzari, Federico Antinori, R. Fini, A. C. Bayes, E. Quercigh, Håvard Helstrup, B. De La Cruz, G. Vassiliadis, J.A. Lien, A. Jacholkowski, M. Sené, K. Šafařík, S. Abatzis, A. Andrighetto, M.F. Votruba, O. Villalobos-Baillie, J. Kahane, J.B. Kinson, A.K. Holme, D. Evans, D. Di Bari, J. P. Dufey, A. Kirk, D. Elia, and J. P. Davies

Subjects
Nuclear physics, Baryon, Physics, Nuclear and High Energy Physics, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, General Physics and Astronomy, Strangeness production, Transverse mass, Heavy ion, Nuclear Experiment, Spectral line
Abstract

Strange and multistrange baryon and antibaryon production is a useful probe into the dynamics of the hot hadronic matter created in central heavy ion interactions. Relative production yields and transverse mass spectra are presented and compared for pW and SW interactions.

Published
1996
Full Text
View/download PDF

8. Observation of vertex factorisation breaking in central pp interactions

Author

A.A. Kondashov, Kunio Takamatsu, Hajime Shimizu, S. Maljukov, V.D. Samoylenko, G. Tchlatchidze, David H. Evans, H. Rotscheidt, T. Nakagawa, B.C. Earl, Jean Pierre Peigneux, Yoshiji Yasu, M. Venables, B. R. French, F. Navach, Freddy Binon, V. Manzari, Alexandre A.V. Inyakin, O. Villalobos Baillie, Jean-Pierre Stroot, D. Di Bari, W. Beusch, V. Romanovsky, A. Jacholkowski, J. N. Carney, Sergey Donskov, D. Elia, Masakazu Kobayashi, G. Vassiliadis, G.V. Khaustov, Susumu Inaba, Sergey S.A. Polovnikov, B. Ghidini, Petr P.M. Shagin, A. Solovjev, V.A. Polyakov, R. Sené, Valentine Sugonyaev, A.V. Dolgopolov, D. Barberis, M. Sené, A. V. Shtannikov, Yuri Kulchitsky, A. Kirk, V. A. Lishin, Irakli Minashvili, K.L. Norman, M.F. Votruba, W. Klempt, N.A. Russakovich, J.B. Kinson, Tsuneaki Tsuru, R. A. Loconsole, A. Semenov, V. Lenti, Paolo Martinengo, Yu.D. Prokoshkin, T. Kinashi, R. A. Fini, A.V. Singovsky, and Andrey Lednev

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Factorization, Particle Physics - Experiment, Vertex (geometry)
Abstract

Central \pipi events produced in pp interactions are studied in terms of correlations between the outgoing protons. It is observed there is more $\rho^{0}$(770) and \fmeson production in reactions where the outgoing protons %fastest and slowest particles in the laboratory frame are on opposite sides of the beam. This effect is not attributable to the trigger or the experimental acceptance, and suggests that the vertices do not factorise.

Published
1996
Full Text
View/download PDF

9. Study of Kins0, Λ and Λ production in S-W collisions at 200 GeV/c per nucleon

Author

J. P. Dufey, A. Kirk, J.B. Kinson, D. Elia, A. Volte, R. Sené, R. P. Barnes, A.K. Holme, V. Lenti, K. Knudson, David H. Evans, J. N. Carney, J.A. Lien, A. C. Bayes, A. Andrighetto, A. Jacholkowski, J. P. Davies, S. Abatzis, B. Ghidini, Håvard Helstrup, B. De La Cruz, Karel Safarik, R. Fini, G. Vassiliadis, M.F. Votruba, W. Beusch, E. Quercigh, J. C. Lassalle, M. Benayoun, F. Navach, O. Villalobos Baillie, V. Manzari, D. Di Bari, R. A. Loconsole, Federico Antinori, Ph. Leruste, B. R. French, Leonardo Paolo Rossi, T. Storås, J. Kahane, M. Venables, J. L. Narjoux, and M. Sené

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Pion, Rapidity, Production (computer science), Nucleon, Spectral line
Abstract

Results on Ks0 production at central rapidity in sulphur-tungsten interactions are presented. The selection procedure used to identify Ks0 particles through their decay to two charged pions is described. The mT spectra for Ks0, Λ and Λ and the relative production rates K s 0 Λ and K s 0 Λ , calculated in the kinematic region pT > 1 GeV/c and 2.5 ≤ yLAB ≤ 3.0, are discussed.

Published
1996
Full Text
View/download PDF

10. Study of charged particle production using Omega RICH in WA94 experiment

Author

B. R. French, W. Beusch, A. Volte, V. Lenti, R. Sené, M. Benayoun, Ivan Kralik, Petr Zavada, R. A. Loconsole, Ph. Leruste, M. Morando, N. Carrer, S. Abatzis, F. Pellegrini, T.F. Thorsteinsen, O. Villalobos Baillie, R. A. Ricci, Federico Antinori, J. L. Narjoux, E. Andersen, V. A. Katchanov, D. Di Bari, A. C. Bayes, J.B. Kinson, B. Ghidini, A. Jacholkowski, M. Sené, Alberto Andrighetto, Vito Manzari, A. Kirk, J. C. Lassalle, R. A. Fini, D. Elia, K. Fanebust, J. Kahane, A. V. Singovsky, David H. Evans, K. Knudson, P. Ladron de Guevara, G.F. Segato, F. Navach, R. P. Barnes, J. N. Carney, E. Quercigh, J. P. Davies, L. Sandor, Roman Lietava, A.K. Holme, J. Bohm, M. Venables, Jozef Urban, K. Šafařík, Håvard Helstrup, B. De La Cruz, G. Vassiliadis, G. Løvhøiden, and M.F. Votruba

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Tracking (particle physics), Omega, Charged particle, Particle identification, Particle detector, Nuclear physics, Particle, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Charged particle beam, Instrumentation
Abstract

We present preliminary results about charged particle production in SS collisions at 200 GeV/ c per nucleon, obtained by WA94 experiment at CERN-SPS. The particle identification has been provided by the Omega RICH; a silicon telescope and an array of multiwire proportional chambers (MWPC) have been used to track particles to the RICH detector. Details about particle tracking and identification procedure are also reported.

Published
1996
Full Text
View/download PDF

11. Production of strange and multistrange hyperons and antihyperons in S-W interactions at 200 GeV/c per nucleon

Author

Leonardo Paolo Rossi, A. Kirk, D. Di Bari, Håvard Helstrup, B. De La Cruz, A. C. Bayes, A. Jacholkowski, S. Abatzis, R. A. Fini, O. Villalobos Baillie, G. Vassiliadis, Vito Manzari, J. P. Davies, David H. Evans, J. Kahane, V. Lenti, J. L. Narjoux, B. Ghidini, R. P. Barnes, K. Knudson, E. Quercigh, J. N. Carney, K. Šafařík, A. Volte, F. Navach, R. Sené, Federico Antinori, A. Andrighetto, W. Beusch, J.B. Kinson, M. Benayoun, M. Sené, M.F. Votruba, J. P. Dufey, R. A. Loconsole, D. Elia, B. R. French, Ph. Leruste, A.K. Holme, J. C. Lassalle, and T. Storås

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Hyperon, Spectral line, Nuclear physics, Baryon, Transverse mass, High Energy Physics::Experiment, Heavy ion, Nuclear Experiment, Nucleon
Abstract

Strange and multistrange baryon and antibaryon production is a useful probe into the dynamics of the hot hadronic matter created in central heavy ion interactions. Relative production yields and transverse mass spectra are presented for Λ, Λ, Ξ− and Ξ+ hyperons produced in central sulphur-tungsten interactions at 200 GeV/c per nucleon.

Published
1995
Full Text
View/download PDF

12. A further study of the centrally produced π+π− and π+π−π+π− channels in pp interactions at 300 and 450 GeV/c

Author

Irakli Minashvili, Federico Antinori, A. Jacholkowski, N.A. Russakovich, Y. Kulchitsky, G. Vassiliadis, C. J. Dodenhoff, B. Ghidini, Paolo Martinengo, R. A. Loconsole, R. A. Fini, K.L. Norman, J. P. Davies, D. Barberis, B. R. French, G. Tchlatchidze, M.F. Votruba, V. Lenti, D. Elia, F. Navach, J.B. Kinson, A. Solovjev, O. Villalobos Baillie, A. Kirk, David H. Evans, A. Semenov, E. Quercigh, M. Sené, R. Sené, A. C. Bayes, Vito Manzari, J. N. Carney, W. Beusch, V. Romanovsky, S. Clewer, S. Maljukov, and D. Di Bari

Subjects
Physics, Crystal, Nuclear and High Energy Physics, Mass spectrum, Atomic physics, Central region, Omega, Particle Physics - Experiment
Abstract

An analysis of the centrally produced π + π − and π + π − π + π − mass spectra from the WA76 and WA91 experiments is presented, which shows that in the π + π − π + π − channel there are two new states, the f 0 (1450) and f 2 (1900). There is another new state in the π + π − channel with M = 1497 ± 30 MeV and Γ = 199 ± 30 MeV, which is compatible with the f 0 (1520) observed by the Crystal Barrel experiment. Another interpretation is discussed, where the 1450 and 1497 GeV structures are explained as being due to an interference effect between the f 0 (1365) and f 0 (1520).

Published
1995
Full Text
View/download PDF

13. Strange particle production in sulphur-sulphur interactions at 200 GeV/c per nucleon

Author

U. Mueller, Håvard Helstrup, B. De La Cruz, G. Vassiliadis, M. Morando, R. A. Loconsole, A.K. Holme, V. Manzari, K. Šafařík, A. V. Singovsky, M. Passaseo, R. Fini, A. Kirk, A. Jacholkowski, J. P. Dufey, J. C. Lassalle, V. A. Katchanov, G. Waelder, Jürgen Engelfried, Ph. Leruste, V. Lenti, K. Knudson, P. Ladron de Guevara, J. N. Carney, D. Elia, Jozef Urban, D. Di Bari, J. Kahane, K. Martens, I. J. Bloodworth, W. Beusch, J. L. Narjoux, A. Michalon, A. Bravar, M. Benayoun, F. Navach, J. Bohm, R. Sené, C. Voltolini, Alberto Andrighetto, G. Løvhøiden, G.F. Segato, E. Quercigh, G. Undheim, A. Volte, S. Abatzis, L. Šándor, F. Pellegrini, R. Blaes, Petr Zavada, B. Ghidini, J.B. Kinson, M. Sené, S. Clewer, David H. Evans, C.J. Dodenhoff, T.F. Thorsteinsen, O. Villalobos Baillie, R. A. Ricci, R. P. Barnes, A. C. Bayes, M.F. Votruba, H. W. Siebert, B. R. French, Federico Antinori, J. P. Davies, Aldo Penzo, T. Kachelhoffer, Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), 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), WA94, Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Heyd, Yvette

Subjects
Physics, Nuclear and High Energy Physics, Strange quark, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Plasma formation, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Nuclear Theory, chemistry.chemical_element, 01 natural sciences, Central region, Omega, Sulfur, Baryon, Nuclear physics, chemistry, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Transverse mass, Nuclear Experiment, 010306 general physics, Nucleon
Abstract

Multi-strange baryon and anti-baryon production is expected to be a useful probe in the search for Quark-Gluon Plasma formation. We present the transverse mass distributions of negative particles, K o s, Λs, Λ s, and Ξ − s produced in sulphurtungsten interactions at 200 GeV/c per nucleon and give the corrected ratios Λ Λ, Ξ − Λ and Ξ − /Λ . We note that our ratio Ξ − / Λ appears large in comparison to that from p p interactions.

Published
1995
Full Text
View/download PDF

14. Observation of a narrow scalar meson at 1450 MeV in the reaction at 450 GeV/c using the CERN Omega spectrometer

Author

Irakli Minashvili, N.A. Russakovich, C. J. Dodenhoff, A. Solovjev, J. P. Davies, V. Lenti, G. Vassiliadis, D. Barberis, W. Beusch, V. Romanovsky, G. Tchlatchidze, R. A. Fini, R. Sené, A. Kirk, A. Semenov, Federico Antinori, D. Evans, Y. Kulchitsky, A. Jacholkowski, D. Di Bari, B. Ghidini, E. Quercigh, S. Clewer, I. Vichou, F. Navach, Maria Girone, B. R. French, J. N. Carney, R. A. Loconsole, M. Sené, S. Maljukov, M.F. Votruba, R. P. Barnes, A. C. Bayes, Vito Manzari, S. Abatzis, O. Villalobos Bailie, K.L. Norman, and J.B. Kinson

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Meson, Spectrometer, 010308 nuclear & particles physics, Elementary particle, 01 natural sciences, Omega, Nuclear physics, 0103 physical sciences, Mass spectrum, Pi, 010306 general physics, Scalar meson
Abstract

The reaction pp → pƒ(π + π − π + π − )p s has been studied at 450 GeV/c in an experiment designed to search for gluonic states. In addition to the well known ƒ 1 (1285) , the π+π−π+π− mass spectrum shows evidence for two states pre only observed by the WA76 experiment, the X(1450) and X(1900). An analysis of the X(1450) shows that it is a relatively narrow state (Γ = 56 ± 12 MeV) with I(JPC) = 0(0++) which decays to ϱ0π+π−. The X (1900) could either b single broad state (Γ = 370±70 MeV) with I(JPC) = 0(2++) or possibly separate states.

Published
1994
Full Text
View/download PDF

15. Strange particle production in sulphur-sulphur interactions at 200 per nucleon

Author

C.J. Dodenhoff, J. C. Lassalle, S. Abatzis, V. Lenti, K. Martens, A. C. Bayes, Vito Manzari, G.F. Segato, F. Pellegrini, K. Šafařík, E. Quercigh, B. R. French, R. P. Barnes, A. Kirk, J.B. Kinson, A. V. Singovsky, M.F. Votruba, A. Volte, A.K. Holme, M. Passaseo, C. Voltolini, R. Sené, Aldo Penzo, R. A. Fini, Alberto Andrighetto, A. Michalon, O. Villalobos Baillie, R. A. Ricci, H. W. Siebert, G. Undheim, T.F. Thorsteinsen, L. Sandor, A. Jacholkowski, U. Mueller, Federico Antinori, Haavard Helstrup, R. Blaes, Petr Zavada, B. De La Cruz, S. Clewer, J. P. Dufey, D. Di Bari, D. Elia, I. J. Bloodworth, R. A. Loconsole, V. A. Katchanov, A. Bravar, J-L. Narjoux, David H. Evans, M. Morando, J. Kahane, G. Waelder, G. Vassiliadis, Gunnar Løvhøiden, Jürgen Engelfried, M. Sené, K. Knudson, P. Ladron de Guevara, J. N. Carney, J. Urban, J. Bohm, W. Beusch, M. Benayoun, B. Ghidini, F. Navach, Ph Leruste, J. P. Davies, and T. Kachelhoffer

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Strange quark, chemistry, chemistry.chemical_element, Nucleon, Sulfur
Published
1994
Full Text
View/download PDF

16. production in sulphur-tungsten interactions at 200 GeV/c per nucleon

Author

S. Abatzis, M.F. Votruba, K. Šafařík, A. Bravar, V. Lenti, K. Knudson, J. N. Carney, J. Kahane, I. J. Bloodworth, Federico Antinori, M. Tamazouzt, M. T. Trainor, V. Manzari, R. Fini, J.B. Kinson, A. Penzo, R. P. Barnes, M. Sené, A. Palano, J. C. Lassalle, A. Jacholkowski, A. Volte, B. De La Cruz, G. Vassiliadis, R. Sené, A. Kirk, J. P. Dufey, R. A. Loconsole, L. Lima Frances, O. Villalobos Baillie, Ph. Leruste, B. R. French, M. Girone, Leonardo Paolo Rossi, A.K. Holme, J. L. Narjoux, Haavard Helstrup, B. Ghidini, David H. Evans, W. Beusch, M. Benayoun, F. Navach, E. Quercigh, A. Malamant, and D. Di Bari

Subjects
Physics, Nuclear and High Energy Physics, Plasma formation, Nuclear Theory, chemistry.chemical_element, Tungsten, Omega, Sulfur, Baryon, Nuclear physics, chemistry, Quark–gluon plasma, Transverse mass, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Nucleon
Abstract

Multi-strange baryon and antibaryon production is expected to be a useful probe in the search for quark-gluon plasma formation. We present the transverse mass distributions of negative particles, Λ' s , Λ ' s and Ξ − ' s produced in sulphur-tungsten interactions at 200 GeV/c per nucleon and give the corrected rations Λ /Λ, Ξ − /Λ and Ξ − / Λ . Our ratio Ξ − / Λ appears to be larger than that from pp interactions.

Published
1991
Full Text
View/download PDF

17. Λ and anti-Λ production in 32S + W and p + W interactions at 200 A GeV/c

Author

R. Zitoun, V. Lenti, K. Knudson, J. N. Carney, M. T. Trainer, B. R. French, David H. Evans, I. J. Bloodworth, K. Manzari, A. Malamant, B. Ghidini, A. Jacholkowski, E. Quercigh, S. Abatzis, R. A. Loconsole, A. Bravar, W. Beusch, R. P. Barnes, Ph. Leruste, A. Volte, M. Benayoun, F. Navach, R. Sené, J. Kahane, A. Kirk, R. Fini, J. C. Lassalle, O. Villalobos Baillie, M. Tamazouzt, L. Lima Frances, J.B. Kinson, A. Penzo, J. P. Dufey, A. Palano, M. Stassinaki, M. Sené, M.F. Votruba, Leonardo Paolo Rossi, J. L. Narjoux, and G. Vassiliadis

Subjects
Nuclear reaction, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle decay, Meson, Hadron, Hyperon, Nucleon, Lambda baryon, Boson
Published
1991
Full Text
View/download PDF

18. Multi-strange baryon and antibaryon production in sulphur-tungsten and proton-tungsten interactions at 200 GeV/c per nucleon

Author

E. Quercigh, S. Abatzis, M. Sene, R. P. Barnes, B. Ghidini, F. Navach, J. P. Dufey, R. A. Fini, A. Palano, I. J. Bloodworth, O. Villalobos Baillie, A. Malamant, R. Falcone, M. T. Trainor, A. Volte, A. Bravar, J. Kahane, A. Kirk, Vito Manzari, G. Vassiliadis, R. Sené, W. Beusch, M.F. Votruba, B. R. French, M. Tamazouzt, R. A. Loconsole, Ph Leruste, J.B. Kinson, A. Penzo, M. Benayoun, K. Knudson, J. N. Carney, Leonardo Paolo Rossi, J. L. Narjoux, V. Lenti, M. Stassinaki, A. Jacholkowski, J. C. Lassalle, L. Lima Frances, and D. Evans

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Hyperon, Lambda baryon, Xi baryon, Nuclear physics, Baryon, Strange matter, Nuclear Experiment, Nucleon
Abstract

Production of multi-strange baryons and antibaryons is expected to be a useful indicator in the search for Quark-Gluon Plasma formation. Production of Ξ− and Ξ − has been observed for the first time in ultra-relativistic heavy ion interactions by the WA85 Experiment. We describe the procedure used to select these cascade candidates and show that Ξ− and Ξ − decays can be identified. Preliminary ratios of Ξ/Ξ production in sulphur-tungsten and proton-tungsten interactions are also presented.

Published
1991
Full Text
View/download PDF

19. Strangeness production in sulphur-tungsten interactions at 200 GeV/c per nucleon

Author

J. L. Narjoux, Michele Arturo Caponero, G. Vassiliadis, R. Zitoun, A. Volte, R. Fini, M.F. Votruba, A. Malamant, J. C. Lassalle, R. Sené, B. R. French, A. Kirk, D. Evans, J.B. Kinson, A. Penzo, W. Beusch, M. Benayoun, F. Navach, V. Lenti, K. Knudson, R. Falcone, M. Sené, J. Kahane, M. Stassinaki, B. Ghidini, I. J. Bloodworth, A. Bravar, E. Quercigh, J. N. Carney, A. Jacholkowski, M. T. Trainor, J. P. Dufey, A. Palano, R. A. Loconsole, Ph. Leruste, S. Abatzis, O. Villalobos Baillie, and Leonardo Paolo Rossi

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Hadron, Strangeness production, Strangeness, Lambda baryon, Atomic and Molecular Physics, and Optics, Charged particle, Nuclear physics, Baryon, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Particle Physics - Experiment
Abstract

Preliminary results from the WA85 Experiment at the CERN Omega Spectrometer are presented. A 200 A GeV/c beam of 22S ions was used with a tungsten target. The apparatus is used to detect V°s and charged tracks in the range PT > 0.9 GeV/c and 2.3 Λ, Λ and cascade particles is discussed. A study of the multiplicity dependence of Λ, Λ and hadron production is presented.

Published
1990
Full Text
View/download PDF

20. Λ and production in sulphur-tungsten interactions at 200 GeV/c per nucleon

Author

W. Beusch, M. Benayoun, F. Navach, M. Stassinaki, A. Volte, R. Sené, E. Quercigh, R. Zitoun, J. Kahane, Leonardo Paolo Rossi, David H. Evans, Michele Arturo Caponero, B. Ghidini, A. Bravar, A. Malamant, R. Fini, A. Jacholkowski, J. L. Narjoux, M. T. Trainor, R. A. Loconsole, B. R. French, A. Kirk, Ph. Leruste, M.F. Votruba, J. C. Lassalle, I. J. Bloodworth, J. P. Dufey, M. Tamazouzt, A. Palano, M. Sené, S. Abatzis, V. Lenti, K. Knudson, J. N. Carney, J.B. Kinson, A. Penzo, L. Lima Frances, G. Vassiliadis, O. Villalobos Baillie, and R. P. Barnes

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Meson, Hadron, Lambda baryon, Charged particle, Nuclear physics, Antimatter, High Energy Physics::Experiment, Rapidity, Atomic physics, Nuclear Experiment, Nucleon
Abstract

Results from the WA85 Experiment at the CERN Ω Spectrometer are presented. A 200 A GeV/ c beam of 32 S ions was used with a tungsten target. The apparatus is used to detect V 0, s and charged tracks in the range p T > 0.9 GeV/ c and 2.3 Y lab Λ and negative hadrons all show a linear increase with rapidity density in the range 70–140 as expected from models based on a superposition of independent NN collisions.

Published
1990
Full Text
View/download PDF

21. Search for pentaquarks in WA97 experiment at CERN

Author

K. Fanebust, M. Henriquez, N. Carrer, Pavel Staroba, Giacomo Bruno, R. A. Loconsole, Vito Manzari, Rocco Caliandro, G. Grella, J. Urban, K. Knudson, Franco Meddi, T. Vik, G.F. Segato, E. Quercigh, M. A. Mazzoni, B. Ghidini, L. Sandor, Haavard Helstrup, S. Di Liberto, W. Beusch, Tiziano Virgili, B. Pastirčák, V. Lenti, M.E. Michalon-Mentzer, P.I. Norman, M. Morando, G. T. Jones, Federico Antinori, F. Fayazzadeh, R. A. Fini, A. Michalon, A.K. Holme, D. Di Bari, Michael A. Thompson, R. Závada, D. Evans, A. Jacholkowski, D. Elia, Ivan Kralik, G. Løvhøden, G. Romano, I. J. Bloodworth, K. Šafařík, Dieter Røhrich, M.F. Votruba, R. Lietava, O. Villalobos Baillie, J.B. Kinson, 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), and WA97

Subjects
Physics, Particle physics, Large Hadron Collider, Reference data (financial markets), Strangeness production, 020206 networking & telecommunications, 02 engineering and technology, Pentaquark, Nuclear physics, 0202 electrical engineering, electronic engineering, information engineering, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 020201 artificial intelligence & image processing, Heavy ion, High Energy Physics::Experiment, Nuclear Experiment
Abstract

The WA97 experiment at CERN has collected data aiming to study strangeness production in heavy ion collisions at 158 A GeV/c; p‐Be data were also taken as reference data. Here we show some results of an analysis of these p‐Be data in order to check for evidence of a recently claimed pentaquark state.

Published
2004
Full Text
View/download PDF

22. STRANGE BARYON SIGNALS OF A NEW STATE OF MATTER IN LEAD-LEAD COLLISIONS AT THE CERN SPS

Author

W. Beusch, N. Carrer, M. Morando, D. Huss, V. Lenti, Franco Meddi, Federico Antinori, Marisa Gulino, Gunnar Løvhøiden, Tiziano Virgili, G.F. Segato, D. Di Bari, E. Quercigh, F. Antinori, G. Romano, O. Villalobos Baillie, D. Evans, M.F. Votruba, F. Fayazzadeh, M.E. Michalon-Mentzer, Petr Zavada, R. A. Fini, A. Michalon, I. J. Bloodworth, R. Lietava, A. Jacholkowski, Michael A. Thompson, T. Vik, M. Henriquez, Dieter Røhrich, Vito Manzari, J.B. Kinson, S. Di Liberto, G. Grella, R. A. Loconsole, P.I. Norman, G. T. Jones, A.K. Holme, Ivan Kralik, D. Elia, K. Šafa∙Ík, Pavel Staroba, J. Ftá∙Nik, M. A. Mazzoni, B. Ghidini, J. Urban, L. Sandor, Haavard Helstrup, K. Knudson, Rocco Caliandro, B. Pastir∙Ák, and K. Fanebust

Subjects
Physics, Baryon, Particle physics, Lead (geology), Large Hadron Collider, State of matter, Strangeness production
Published
2001
Full Text
View/download PDF

23. Strange and multi-strange baryon production at SPS as a probe of QGP formation

Author

Ivan Kralik, N. Carrer, I. J. Bloodworth, L. Sandor, W. Beusch, Haavard Helstrup, Franco Meddi, D. Huss, M. Morando, M. A. Mazzoni, Tiziano Virgili, B. Ghidini, Trine Spedstad Tveter, Federico Antinori, O. Villalobos Baillie, A. Jacholkowski, D. Di Bari, J. Ftacnik, K. Šafařík, G. Lo, D. Elia, P.I. Norman, G. T. Jones, D. Evans, K. Knudson, Pavel Staroba, Vito Manzari, K. Fanebust, vho, M.F. Votruba, Petr Zavada, R. Lietava, Michael A. Thompson, A.K. Holme, iden, J. Urban, Rocco Caliandro, J.B. Kinson, G. Romano, T.F. Thorsteinsen, G. Grella, V. Lenti, H. Bakke, R. A. Fini, A. Michalon, G.F. Segato, E. Quercigh, M.E. Michalon-Mentzer, R. A. Loconsole, S. Di Liberto, B. Pastirčák, and Giorgio Torrieri

Subjects
Baryon, Nuclear physics, Physics, Strange quark, Particle physics, Large Hadron Collider, Nuclear Theory, Quark–gluon plasma, Transverse momentum, Strangeness production, Rapidity, Nuclear Experiment
Abstract

The WA97 experiment studies strangeness production at central rapidity in Pb-Pb, p-Pb and p-Be collisions at CERN SPS. A comprehensive study, including the most recent results on yields and transverse momentum spectra of strange and multi-strange particles, is presented.

Published
2000
Full Text
View/download PDF

24. Strange and multistrange baryon production in Pb-Pb collisions at 158 A GeV/c

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Spectrometer, Quark-gluon plasma, nucleon, WA97, [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Detector, Strangeness, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Tracking (particle physics), Omega, Baryon, Nuclear physics, Particle
Abstract

The series of experiments (WA85, WA94 and WA97) at the Omega spectrometer at CERN SPS have systematically studied the production of different strange particles. Strangeness enhancements at central rapidities have been reported by WA85 and WA94 in S-W and SS with respect to p-A collisions. For the investigation of PbPb interactions in the WA97 experiment a new detector suitable for high particle densities, the Pixel Tracking Chamber, has been developed based on silicon pixel detectors. The results on production ratios and cross sections of Λ, Λ , Ξ − , Ξ + , Ω − and Ω + detected by this experiment are presented. A significant enhancement of the Ω over Ξ ratio is observed when comparing p-Pb to PbPb data (a factor of about 3).

Published
1998

25. Charged particle production in S-S collisions at 200 GeV/c per nucleon

Author

Andrighetto, A Antinori, F Bayes, AC Beusch, W Bohm, J and Carrer, N delaCruz, B Davies, JP DiBari, D Elia, D and Engelfried, J Evans, D Fanebust, K Fini, R Ftacnik, J Ghidini, B Helstrup, H Holme, AK Jacholkowski, A and Katchanov, VA Kinson, JB Kirk, A Knudson, K Kralik, I and deGuevara, PL Lassalle, JC Lenti, V Lietava, R and Loconsole, RA Lovhoiden, G Manzari, V Martens, K and Morando, M Muller, U Navach, F Norman, KL Pellegrini, F and Quercigh, E Safarik, K Sandor, L Segato, G Sene, M and Sene, R Sennels, P Siebert, HW Singovski, AV and Thorsteinsen, TF Urban, J Vassiliadis, G Venables, M and Baillie, OV Volte, A Votruba, MF Walder, G Zavada, P

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Experiment, Nuclear Experiment
Abstract

Charged particle production in central S-S collisions at 200 GeV/c per nucleon has been studied by the WA94 experiment at the CERN-SPS. Particle identification has been provided by the Omega RICH, while a silicon telescope in the Omega spectrometer and an array of MultiWire Proportional Chambers have been used to trace particles through the RICH detector. Production ratios and transverse mass spectra for pi(+/-), K+/- and p((p) over bar) at central rapidity and p(T) > 1.3 GeV/c are presented. (C) 1997 Elsevier Science B.V.

Published
1997

26. WA97 results on strangeness production in lead-lead collisions at 158 A GeV/c

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Proton, Heavy Ion Collisions, Strangeness production, Strangeness, Nuclear physics, Lead (geology), Quark Gluon Plasma, Quark–gluon plasma, Mass spectrum
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 gX seems to be enhanced in lead initiated reactions compared to proton initiated reactions.

Published
1996

27. A study of cascade and strange baryon production in sulphur-sulphur interactions at 200 GeV/c per nucleon

Author

B. R. French, M. Morando, L. Šándor, F. Pellegrini, D. Elia, R. A. Loconsole, Roman Lietava, A. Kirk, V. A. Katchanov, Ph. Leruste, N. Carrer, Federico Antinori, Håvard Helstrup, B. De La Cruz, D. Di Bari, J. C. Lassalle, G. Vassiliadis, R. A. Fini, Ivan Kralik, A. V. Singovsky, J. Kahane, S. Abatzis, K. Šafařík, K. Knudson, V. Lenti, P. Ladron de Guevara, A. Jacholkowski, J. N. Carney, M.F. Votruba, F. Navach, A.K. Holme, O. Villalobos Baillie, R. A. Ricci, G. Løvhøiden, Alberto Andrighetto, G.F. Segato, E. Quercigh, J. Bohm, J. P. Davies, M. Venables, J. L. Narjoux, E. Andersen, Jozef Urban, B. Ghidini, M. Sené, A. C. Bayes, Vito Manzari, W. Beusch, M. Benayoun, David H. Evans, K. Fanebust, A. Volte, R. Sené, K.L. Norman, J.B. Kinson, Petr Zavada, and T.F. Thorsteinsen

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Spectrometer, Nuclear Theory, Omega, Spectral line, Baryon, Nuclear physics, Transverse mass, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Nucleon, Astrophysics::Galaxy Astrophysics, Particle Physics - Experiment, Nuclear Physics
Abstract

Strange and multistrange baryon and antibaryon production has been studied in sulphur sulphur interactions at 200 GeV/c per nucleon at central rapidity using the CERN Omega Spectrometer. Particle production ratios and transverse mass spectra are presented for Λ, Ξ−, Λ and Ξ−.

Published
1995

28. A STUDY OF CASCADE AND STRANGE BARYON PRODUCTION IN SULFUR-SULFUR INTERACTIONS AT 200 GEV/C PER NUCLEON

Author

ABATZIS, S ANDERSEN, E ANDRIGHETTO, A ANTINORI, F BAYES, AC BENAYOUN, M BEUSCH, W BOHM, J CARNEY, JN CARRER, N DELACRUZ, B DAVIES, JP DIBARI, D ELIA, D EVANS, D and FANEBUST, K FINI, R FRENCH, BR GHIDINI, B HELSTRUP, H HOLME, AK JACHOLKOWSKI, A KAHANE, J KATCHANOV, VA and KINSON, JB KIRK, A KNUDSON, K KRALIK, I DEGUEVERA, PL and LASSALLE, JC LENTI, V LERUSTE, P LIETAVA, R and LOCONSOLE, RA LOVHOIDEN, G MANZARI, V MORANDO, M NAVACH, F NARJOUX, JL NORMAN, KL PELLEGRINI, F QUERCIGH, E and RICCI, R SANDOR, L SAFARIK, K SEGATO, G SINGOVSKY, AV and SENE, M SENE, R THORSTEINSEN, TF URBAN, J and VASSILIADIS, G VENABLES, M BAILLIE, OV VOLTE, A VOTRUBA, MF ZAVADA, P

Subjects
High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract

Strange and multistrange baryon and antibaryon production has been studied in sulphur sulphur interactions at 200 GeV/c per nucleon at central rapidity using the CERN Omega Spectrometer, Particle production ratios and transverse mass spectra are presented for Lambda, Xi(-), ($) over bar Lambda and ($) over bar Xi(-).

Published
1995

29. New results on strange and multistrange baryon production and charged kaon production in sulphur sulphur interactions at 200 GeV/c per nucleon

Author

V. Lenti, R. A. Loconsole, G.F. Segato, E. Quercigh, Petr Zavada, A. Kirk, Ph Leruste, B. De La Cruz, K. Šafařík, N. Carrer, L. Sandor, J. L. Narjoix, V. A. Katchanov, Haavard Helstrup, M.F. Votruba, R. A. Fini, B. Ghidini, G. Lo, M. Morando, D. Elia, T.F. Thorsteinsen, R. Licci, F. Navach, J. Bohm, M. Venables, K. Knudson, P. Ladron de Guevara, S. Abatzis, A. V. Singovsky, G. Vassiliadis, J. N. Carney, vho, A.K. Holme, J.B. Kinson, J. C. Lassalle, F. Pellegrini, A. Jacholkowski, D. Di Bari, D. Evans, J. Kahane, A. C. Bayes, A. Volte, Vito Manzari, R. Lietava, R. Sené, K. Fanebust, E. Andersen, Federico Antinori, B. R. French, Ivan Kralik, M. Sene, J. Urban, R. P. Barnes, W. Beusch, O. Villalobos Baillie, Alberto Andrighetto, M. Benayoun, J. P. Davies, and iden

Subjects
Physics, Particle physics, Nuclear Theory, chemistry.chemical_element, Sulfur, Omega, Charged particle, Spectral line, Baryon, Nuclear physics, chemistry, Transverse mass, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Nucleon
Abstract

Strange and multistrange baryon and antibaryon production has been studied in sulphur sulphur interactions at 200 GeV/c per nucleon at central rapidity. Particle production ratios and transverse mass spectra are presented for Λ, Ξ−, Ξ and Ξ−. In addition preliminary results on charged kaon production are presented, and the status of identified charged particle track reconstruction using the Omega RICH is reviewed.

Published
1995
Full Text
View/download PDF

30. Production of multistrange baryons and antibaryons in sulphur-tungsten interactions at 200 GeV/c per nucleon

Author

Leonardo Paolo Rossi, J. L. Narjoux, V. Lenti, K. Knudson, J. N. Carney, A. Jacholkowski, David H. Evans, R. A. Loconsole, M. Sené, Federico Antinori, Ph. Leruste, A. Malamant, W. Beusch, E. Quercigh, M. T. Trainor, M. Benayoun, F. Navach, A. Kirk, A. Bravar, R. Fini, A.K. Holme, J. Kahane, K. Šafařík, B. R. French, J. P. Dufey, A. Palano, J. C. Lassalle, D. Di Bari, S. Abatzis, L. Lima Frances, B. Ghidini, A. Volte, R. Sené, M.F. Votruba, R. P. Barnes, I. J. Bloodworth, M. Tamazouzt, J.B. Kinson, A. Penzo, O. Villalobos Baillie, Håvard Helstrup, G. Vassiliadis, and V. Manzari

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, chemistry.chemical_element, Tungsten, Sulfur, Omega, Baryon, Nuclear physics, chemistry, Cascade, Quark–gluon plasma, Rapidity, Nucleon, Particle Physics - Experiment
Abstract

Production of Ξ − and Ξ − has been observed for the first time in heavy ion interactions by the WA85 Experiment. Multistrange baryon and antibaryon production is expected to be a useful probe in the search for quark-gluon plasma formation. We describe the procedure used to select these cascade candidates and show that Ξ − and Ξ − decays can be identified. The ratio of Ξ Ξ production, corrected for geometrical acceptances and reconstruction efficiencies, is 0.39 ± 0.07 for sulphur-tungsten interactions in the central rapidity interval 2.3 Y lab p T >1.1 GeV/ c .

Published
1990

31. Preliminary results from the WA85 experiment on Λ and gL production in 200 a GeV/C sulphur-tungsten interactions

Author

A. Kirk, J. P. Dufey, V. Lenti, K. Knudson, E. Quercigh, A. Malamant, M. T. Trainor, J. N. Carney, A. Bravar, O. Villalobos Baillie, R. Fini, S. Abatzis, Leonardo Paolo Rossi, B. Ghidini, A. Jacholkowski, W. Beusch, J. Kahane, J. L. Narjoux, M. Benayoun, F. Navach, M.F. Votruba, M. Sené, R. A. Loconsole, M. Stassinaki-Spyropoulou, B. R. French, Ph. Leruste, A. Volte, I. J. Bloodworth, R. Sené, J. C. Lassalle, J.B. Kinson, A. Penzo, R. Zitoun, G. Vassiliadis, Michele Arturo Caponero, and R. Falcone

Subjects
Nuclear reaction, Physics, Nuclear and High Energy Physics, Pair production, chemistry, Branching fraction, Hadron, Analytical chemistry, Mass spectrum, chemistry.chemical_element, Tungsten, Nucleon, Lambda baryon
Published
1989
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results