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17 results on '"H. Kraner"'

1. How strange is PHOBOS? First RHIC physics results and future prospects

Author

L. P. Remsberg, S. G. Steadman, G. Van Nieuwenhuizen, M. Plesko, P. Sawicki, R. Verdier, Alice Mignerey, M. Strek, C. Halliwell, Christof Roland, F. L. H. Wolfs, R. Bindel, A. Białas, R. S. Hollis, J. Michałowski, W. T. Lin, A. E. Chen, J. Kotuła, J. Ligocki, P. Kulinich, Andrzej Olszewski, J. Ryan, A. Budzanowski, B.F. Wadsworth, A. Straczek, M. Despet, A. Sukhanov, C. Gomes, M. P. Decowski, D. Ross, R. Ganz, A. B. Hayes, Bolek Wyslouch, D. McLeod, E. Griesmayer, Jan Godlewski, H. Kraner, A. S. Carroll, Yuan-Hann Chang, D. S. Barton, M. Patel, J. Halik, Burt Holzman, P. Fita, C. Conner, Z. Stopa, K. Gulbrandsen, Barbara Wosiek, J. Fitch, A. Sanzgiri, C. Law, N. George, W. Skulski, A. H. Wuosmaa, B. B. Back, R. Baum, J. Scaduto, J. Katzy, P. Haridas, M. Neal, R. Holynski, K. Surowiecka, George Stephans, M. Ceglia, M. Friedl, Gunther Roland, B. D. Bates, K. Zalewski, L J Rosenberg, J. L. Kane, W. Czyz, R. Pak, S. Manly, Marek Stodulski, M. Reuter, Peter Steinberg, G. S. F. Stephans, Johannes Mülmenstädt, M. D. Baker, E. Johnson, P. Sarin, Jaw-Luen Tang, C. Reed, Bogdan Dabrowski, J. Shea, C. Vale, Heinz Pernegger, W. Kita, M. Lemler, E. Garcia, S. Gushue, S. Basilev, G. A. Heintzelman, K. Gałuszka, R. Teng, Inkyu Park, Wit Busza, P. Żychowski, T. Coghen, W. Kucewicz, Rachid Nouicer, Adam Trzupek, Krzysztof Woźniak, J. Sinacore, W. Bogucki, Russell Richard Betts, and Conor Henderson

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Pseudorapidity, Strangeness production, Nuclear Experiment, Nucleon, Charged particle, Beam (structure), Semiconductor detector, Rate of increase
Abstract

The early summer of 2000 saw the start of the RHIC experimental programme. The PHOBOS collaboration used data from the beginning of the running period to extract the first physics information about this exciting new regime. This first measurement consisted of pseudorapidity densities of primary charged particles near mid-rapidity in central Au + Au collisions at beam energies which gave centre-of-mass energies per pair of colliding nucleons of √snn = 56 and 130 GeV. The observed densities are higher than those observed previously in any collisions in the laboratory. In addition, the rate of increase in density between the two energies is significantly larger than that for nucleon-nucleon collisions at comparable beam energies. This paper will briefly describe the PHOBOS experiment (including the subset of the full detector installed for the early period of the RHIC beam), discuss the results of the first physics measurement and conclude with the prospects for the future, especially in the area of strangeness production.

Published
2001

2. First results from CERES/NA45 on low-mass electron pair production in PbAu collisions

Author

S. Razin, S. Shimanskiy, A. Drees, P. Braun-Munzinger, F. Ceretto, B. Lenkeit, Johanna Stachel, P. Holl, I. Ravinovich, P. Glässel, Ch. Jung, E. Socol, U. Faschingbauer, Th. Ullrich, Y. Minaev, R. Baur, H. J. Specht, E. Gatti, C.P. de los Heros, Jurgen Schukraft, G. Agakichiev, G. Tel-Zur, Johannes Peter Wessels, J. Rak, Pavel Rehak, V. I. Yurevich, J.P. Wurm, M. Messer, Y. Panebrattsev, H. Kraner, S. Esumi, C. Weber, Ch. Fuchs, I. Tserruya, C. Voigt, Andreas Pfeiffer, and Marco Sampietro

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Electron pair, Pair production, Electron yield, Hadron, Multiplicity (chemistry), Nuclear Experiment, Nucleon, Low Mass, Charged particle
Abstract

We report preliminary results of the first measurement of low-mass electron pairs in 160 GeV/nucleon PbAu collisions at central rapidities in a wide multiplicity range. This work is the continuation of our systematic studies on pair production in p-Be, p-Au and SAu interactions. The motivation for this effort derives from a new source of lowmass dileptons recently observed in SAu and S-W collisions by CERES and HELIOS/3, respectively. The results obtained in the analysis of the PbAu data confirm our previous finding that pair production in the mass range 0.2 < mee < 1.5 GeV/c2 is enhanced over the contributions from hadron decays while no significant excess could be observed for mee ≲ 2mπ. A comparison of the results for different multiplicity bins favours a non-linear dependence of the e+e−-yield on the accompanying charged particle densities.

Published
1996

3. A search for multiplicity fluctuations in high energy nucleus-nucleus collisions

Author

F. Lamarche, M. Kazuno, Kimio Niwa, N. DiGiacomo, W.E. Sondheim, Vincent Hedberg, Serge Smirnov, S. Di Liberto, Sverker Johansson, Ulf Mjörnmark, R. Heifetz, G. Beaudoin, S. Muraviev, N. Armenise, A.C. Breslin, Motoaki Miyanishi, S. Nilsson, M. Sekimoto, Paolo Giubellino, F. Piuz, Piergiorgio Cerello, P. Yepes, Matthias Neubert, Makoto Kobayashi, H. Beker, Kazuhito Tsukagoshi, D. Bettoni, B. Sellden, H. Shibuya, Gilbert Poulard, M. Clemen, M. Murray, H. Sletten, Y. Sirois, D.H. Davis, H. En'yo, G. London, Torsten Paul Ake Åkesson, B. Erlandsson, M. Nomura, B. A. Dolgoshein, Ulrich Goerlach, M. Nakamura, M. T. Muciaccia, Y. Umezawa, D. Lissauer, Göran Jarlskog, Franco Meddi, M. A. Mazzoni, R. C. E. Devenish, Francois Corriveau, P. L. McGaughey, J. R. Dodd, H. Tajima, B. V. Jacak, D.N. Tovee, B. Lörstad, M. J. Price, Richard Wigmans, C. Leroy, C.W. Fabjan, H. Kitamura, G. Romano, G. Rosa, A. L. S. Angelis, Y. M. Park, V. Sidorov, Peter Glassel, P. Aubry, N. Ushida, Venetios Polychronakos, I. Stumer, Hans Henrik Thodberg, J. Sunier, G. Baroni, I. Tserruya, H. Atherton, H. Kraner, A. Holscher, R. Haglund, S. Sartori, B. Collick, I. Blevis, M. J. Esten, M. L. McCubbin, K. Dederichs, L. A. Hamel, Yona Oren, L. Ramello, G. Grella, P. Depommier, Odette Benary, S. Nakanishi, E. Mazzucato, J. M. Beaulieu, W. E. Cleland, S. Dell'Uomo, A. Lounis, A. Gaidot, H. W. Van Hecke, A. Marzari-Chiesa, J. A. Thompson, G. Vasseur, H. W. Bartels, Peter Fischer, L. Šándor, K. Hoshino, Shigeki Aoki, J. P. Pansart, Alevtina Shmeleva, Massimo Masera, Jurgen Schukraft, Kazuma Nakazawa, D.C. Rahm, H. J. Specht, S. Dagan, Koichi Kodama, N. A. McCubbin, S. Almehed, S. Simone, Vladimir Tikhomirov, T. Ishigami, L. Olsen, V. Bisi, M. Seman, Y. Kobayashi, A. Drees, V. Kroh, A. Pfeiffer, H. Bøggild, K. Niu, J. Soltani, Rob Veenhof, Z. Fraenkel, and S. Watanabe

Subjects
Physics, Nuclear and High Energy Physics, High energy, HELIOS, Ioni ultrarelativistici, Heavy Ion Physics, Particle Physics, Nuclear physics, Transverse plane, medicine.anatomical_structure, heavy ions, multiplicity flictuations, medicine, Multiplicity (chemistry), Atomic physics, Nuclear Experiment, Nucleon, Nucleus, Particle Physics - Experiment
Abstract

A search for non-statistical fluctuations was performed in 200 GeV per nucleon oxygen and sulphur ion-emulsion interactions selected by a high transverse energy trigger. No clear signal of dynamical correlations or of unusual fluctuations was found.

Published
1990

4. Inclusive negative particlep ⊥ spectra in p-nucleus and nucleus-nucleus collisions at 200 GeV per nucleon

Author

G. Beaudoin, M. L. McCubbin, K. Dederichs, Venetios Polychronakos, S. Di Liberto, A. Drees, E. Mazzucato, J. M. Beaulieu, A. Marzari-Chiesa, F. Gibrat-Debu, N. Di Giacomo, Sverker Johansson, V. Kroh, B. V. Jacak, Paolo Giubellino, V. Bisi, H. Kraner, Ulf Mjörnmark, H. W. Bartels, A. Pfeiffer, Torsten Paul Ake Åkesson, Franco Meddi, R. Heifetz, Jurgen Schukraft, H. Bøggild, Peter Glassel, P. Aubry, G. Rosa, A. Holscher, B. Sellden, S. Simone, P. Depommier, L. A. Hamel, D.C. Rahm, Peter Fischer, Richard Wigmans, Vladimir Tikhomirov, M. Clemen, S. Nilsson, M. Sekimoto, Hans Henrik Thodberg, H. Beker, Göran Jarlskog, N. A. McCubbin, B. Dogolshein, Vincent Hedberg, D. Bettoni, Odette Benary, C. Leroy, J. Soltani, Serge Smirnov, Massimo Masera, Francois Corriveau, L. Olsen, J. P. Pansart, P. Yepes, A. L. S. Angelis, I. Tserruya, H. J. Specht, H. Atherton, Y. M. Park, V. Sidorov, N. Armenise, P. L. McGaughey, S. Dell'Uomo, J. R. Dodd, R. Haglund, S. Dagan, D. Lissauer, Gilbert Poulard, I. Stumer, H. W. Van Hecke, M. A. Mazzoni, A. Lounis, R. C. E. Devenish, S. Muraviev, W. E. Cleland, M. Murray, Rob Veenhof, Z. Fraenkel, H. Sletten, S. Sunier, G. London, B. Erlandsson, H. En'yo, B. Lörstad, G. Romano, M. Seman, I. Ramello, Matthias Neubert, S. Almehed, B. Collick, I. Blevis, J. A. Thompson, G. Vasseur, Y. Sirois, F. Martelli, V. Tcherniatin, M. J. Esten, A. Gaidot, I. Riccati, Yona Oren, F. Lamarche, M. Prioe, W.E. Sondheim, L. Šándor, Alevtina Shmeleva, C.W. Fabjan, F. Piuz, U. Goerlach, and M. T. Muciaccia

Subjects
heavy ions, HELIOS, pt spectra, Physics, Particle physics, Physics and Astronomy (miscellaneous), Heavy Ion Physics, Particle Physics, Spectral line, Nuclear physics, medicine.anatomical_structure, medicine, Rapidity, Constant (mathematics), Nucleon, Engineering (miscellaneous), Nucleus, Particle Physics - Experiment
Abstract

The HELIOS experiment has measured inclusivep⊥ spectra of negative particles in the rapidity region 1.0 is found to be approximately constant up to the highest accessible values ofE⊥.

Published
1990

6. Charged-particle multiplicity near midrapidity in central Au+Au collisions at sqrt[SNN]=56 and 130 GeV

Author

B B, Back, M D, Baker, D S, Barton, S, Basilev, B D, Bates, R, Baum, R R, Betts, A, Białas, R, Bindel, W, Bogucki, A, Budzanowski, W, Busza, A, Carroll, M, Ceglia, Y H, Chang, A E, Chen, T, Coghen, C, Conner, W, Czyz, B, Dabrowski, M P, Decowski, M, Despet, P, Fita, J, Fitch, M, Friedl, K, Gałuszka, R, Ganz, E, Garcia, N, George, J, Godlewski, C, Gomes, E, Griesmayer, K, Gulbrandsen, S, Gushue, J, Halik, C, Halliwell, P, Haridas, A, Hayes, G A, Heintzelman, C, Henderson, R, Hollis, R, Hołyński, B, Holzman, E, Johnson, J, Kane, J, Katzy, W, Kita, J, Kotuła, H, Kraner, W, Kucewicz, P, Kulinich, C, LawV, M, Lemler, J, Ligocki, W T, Lin, S, Manly, D, McLeod, J, Michałowski, A, Mignerey, J, Mülmenstädt, M, Neal, R, Nouicer, A, Olszewski, R, Pak, I C, Park, M, Patel, H, Pernegger, M, Plesko, C, Reed, L P, Remsberg, M, Reuter, C, Roland, G, Roland, D, Ross, L, Rosenberg, J, Ryan, A, Sanzgiri, P, Sarin, P, Sawicki, J, Scaduto, J, Shea, J, Sinacore, W, Skulski, S G, Steadman, G S, Stephans, P, Steinberg, A, Straczek, M, Stodulski, M, Strek, Z, Stopa, A, Sukhanov, K, Surowiecka, J L, Tang, R, Teng, A, Trzupek, C, Vale, G J, van Nieuwenhuizen, R, Verdier, B, Wadsworth, F L, Wolfs, B, Wosiek, K, Woźniak, A H, Wuosmaa, B, Wysłouch, K, Zalewski, and P, Zychowski

Abstract

We present the first measurement of pseudorapidity densities of primary charged particles near midrapidity in Au+Au collisions at sqrt[s(NN)] = 56 and 130 GeV. For the most central collisions, we find the charged-particle pseudorapidity density to be dN/deta|(|eta|1) = 408+/-12(stat)+/-30(syst) at 56 GeV and 555+/-12(stat)+/-35(syst) at 130 GeV, values that are higher than any previously observed in nuclear collisions. Compared to proton-antiproton collisions, our data show an increase in the pseudorapidity density per participant by more than 40% at the higher energy.

Published
2000

7. Low-mass lepton-pair production in p-Be collisions at 450 GeV/c

Author

F. Gibrat-Debu, Torsten Paul Ake Åkesson, Yona Oren, H. Atherton, R. Haglund, P. Nevski, L. Šándor, Alevtina Shmeleva, Paolo Giubellino, S. Simone, C.W. Fabjan, S. Eidelman, H. En'yo, B. Lörstad, G. Romano, F. Lamarche, V. Tcherniatin, Rob Veenhof, F. Martelli, M. J. Esten, P. Yepes, Peter Glassel, P. Aubry, E. Stern, A. Drees, Francois Corriveau, Ulf Mjörnmark, Jurgen Schukraft, P. L. McGaughey, V. Kroh, J. R. Dodd, M. L. McCubbin, R. Heifetz, D.C. Rahm, Gilbert Poulard, G. Rosa, B. Collick, Gilles Beaudoin, W. E. Sondheim, A. Pfeiffer, M. J. Price, M. T. Muciaccia, K. Dederichs, H. Bøggild, S. DiLiberto, M. Clemen, I. Blevis, M. Seman, M. A. Mazzoni, S. Dagan, Massimo Masera, A. Sumarokov, F. Piuz, M. Murray, A. Marzari-Chiesa, H. Sletten, H. W. Bartels, B. Erlandsson, H. J. Specht, D. Lissauer, J. Sunier, E. Mazzucato, Richard Wigmans, J. M. Beaulieu, C. Leroy, Peter Fischer, Matthias Neubert, A. Gaidot, Y. Sirois, A. Vanyashin, H. Beker, W. J. Willis, A. Holscher, A. L. S. Angelis, L. Riccati, Y. M. Park, V. Sidorov, L. A. Hamel, I. Stumer, S. Muraviev, Vladimir Tikhomirov, S. Johannson, L. Olsen, S. Almehed, J. A. Thompson, G. Vasseur, N. DiGiacomo, Vincent Hedberg, Serge Smirnov, B. V. Jacak, P. Pomianowski, G. London, J. Antos, Ulrich Goerlach, Franco Meddi, N. A. McCubbin, V. Bisi, L. Ramello, S. Nilsson, M. Sekimoto, P. Depommier, J. P. Pansart, Odette Benary, Y. Golubkov, B. A. Dolgoshein, A. Lounis, H. W. Van Hecke, A. Shikonian, Göran Jarlskog, Venetios Polychronakos, W. E. Cleland, H. Kraner, D. Bettoni, 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 Heyd, Yvette

Subjects
Physics, Electron pair, Particle physics, Muon, Large Hadron Collider, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Hadron, Elementary particle, Electron, Nuclear physics, Pair production, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment, Lepton
Abstract

We report on the production of low-mass electron pairs and muon pairs in p-Be collisions at 450 GeV/c at the CERN SPS. For both electron and muon pairs the low-mass spectrum can be explained satisfactorily by lepton pairs from hadronic decays, and there is no need to invoke any “unconventional” source. The normalisation of the major hadronic sources is set by the data. The upper limit, at 90% confidence level, on any new source of lepton pairs is ∼20% of the hadronic decay contribution for muons, and ∼40% for electrons.

Published
1995

8. Transverse energy measurements in proton-nucleus interactions at high energy

Author

M. T. Muciaccia, H. Beker, S. Almehed, W.E. Sondheim, B. Lörstad, G. Romano, L. Riccati, J. A. Thompson, G. Vasseur, I. Tserruya, F. Piuz, H. Atherton, R. Haglund, Francois Corriveau, Paolo Giubellino, Jurgen Schukraft, H. J. Specht, G. London, P. L. McGaughey, J. R. Dodd, C. Leroy, M. Murray, H. Sletten, D.C. Rahm, M. Clemen, M. J. Price, A. L. S. Angelis, M. Stern, P. Depommier, Ulrich Goerlach, Y. M. Park, V. Sidorov, S. Simone, K. Dederichs, F. Gibrat-Debu, Matthias Neubert, Göran Jarlskog, Franco Meddi, I. Stumer, Torsten Paul Ake Åkesson, Odette Benary, J. Sunier, Massimo Masera, H. En'yo, Venetios Polychronakos, Y. Sirois, S. Dell'Uomo, H. W. Bartel, M. A. Mazzoni, G. Beaudoin, N. A. McCubbin, B. Erlandson, D. Lissauer, A. Lounis, R. C. E. Devenish, Peter Glassel, P. Aubry, W. E. Cleland, A. Holscher, Hans Henrik Thodberg, L. A. Hamel, B. Sellden, S. Dagan, V. Tcherniatin, Richard Wigmans, G. Rosa, H. Kraner, M. J. Esten, A. Drees, S. Muraviev, V. Kroh, E. Mazzucato, J. M. Beaulieu, M. Seman, B. A. Dolgoshein, A. Pfeiffer, H. Bøggild, S. DiLiberto, F. Martelli, L. Ramello, Vladimir Tikhomirov, P. Yepes, Gilbert Poulard, L. Olsen, B. Collick, I. Blevis, H. W. Van Hecke, N. DiGiacomo, Vincent Hedberg, D. Bettoni, Serge Smirnov, Sverker Johansson, Ulf Mjörnmark, R. Heifetz, B. V. Jacak, V. Bisi, S. Nilsson, M. Sekimoto, J. P. Pansart, F. Lamarche, A. Gaidot, A. Marzari-Chiesa, Peter Fischer, Rob Veenhof, Z. Fraenkel, C.W. Fabjan, Yona Oren, L. Šándor, Alevtina Shmeleva, 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 Heyd, Yvette

Subjects
Nuclear reaction, Mass number, Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], quark-gluon plasma, Physics and Astronomy (miscellaneous), Scattering, nucleon-nucleus, Spectral line, Nuclear physics, Momentum, Transverse plane, Fragmentation (mass spectrometry), Pseudorapidity, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Atomic physics, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

The results of two sets of transverse energy measurements, performed with incident proton beams of 200 and 450 GeV/c momentum on several nuclear targets, are presented. The transverse energy cross sections dσ/dET are measured in a pseudorapidity range including the target fragmentation region (−0.1

Published
1993

9. Kaon production in 200-GeV/nucleon nucleus-nucleus collisions

Author

A. Holscher, V. Tcherniatin, B. Sellden, L. A. Hamel, M. J. Esten, E. Mazzucato, J. M. Beaulieu, B. V. Jacak, N. Armenise, C. Leroy, S. Dagan, A. L. S. Angelis, Y. M. Park, V. Sidorov, S. Nilsson, F. Gibrat-Debu, B. Lörstad, Venetios Polychronakos, Göran Jarlskog, Paolo Giubellino, G. Romano, I. Tserruya, M. Sekimoto, E. Stern, H. Atherton, Matthias Neubert, W.E. Sondheim, R. Haglund, Yona Oren, H. Kraner, Y. Sirois, Francois Corriveau, H. Bøggild, P. Yepes, N. DiGiacomo, Rob Veenhof, Z. Fraenkel, S. Simone, D. Bettoni, Gilbert Poulard, J. P. Pansart, Vincent Hedberg, Massimo Masera, P. L. McGaughey, J. R. Dodd, M. J. Price, Odette Benary, S. Di Liberto, Serge Smirnov, J. Sunier, Peter Glassel, P. Aubry, B. Erlandsson, Sverker Johansson, M. Clemen, A. Drees, M. L. McCubbin, A. Gaidot, Ulf Mjörnmark, K. Dederichs, V. Bisi, V. Kroh, R. Heifetz, A. Marzari-Chiesa, S. Dell'Uomo, Richard Wigmans, H. W. Bartels, N. A. McCubbin, Hans Henrik Thodberg, A. Pfeiffer, L. Ramello, A. Lounis, I. Stumer, S. Muraviev, Peter Fischer, J. Soltani, H. Beker, W. E. Cleland, L. Riccati, Franco Meddi, H. W. Van Hecke, H. En'yo, L. Šándor, D. Lissauer, M. Murray, H. Sletten, M. T. Muciaccia, Torsten Paul Ake Åkesson, S. Almehed, J. A. Thompson, G. Vasseur, G. Rosa, M. Seman, M. A. Mazzoni, Alevtina Shmeleva, R. C. E. Devenish, H. J. Specht, P. Depommier, C.W. Fabjan, F. Lamarche, Vladimir Tikhomirov, L. Olsen, Jurgen Schukraft, D.C. Rahm, F. Piuz, U. Goerlach, B. A. Dolgoshein, G. London, B. Collick, I. Blevis, Gilles Beaudoin, and F. Martelli

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Strange quark, Spectrometer, Nuclear Theory, Nuclear physics, medicine.anatomical_structure, medicine, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Nucleus, Beam energy, Particle Physics - Experiment
Abstract

Results from the HELIOS External Spectrometer on kaon production in 200 GeV/A S + W and p + W collisions are presented. The Kπ ratios are compared with results from a lower beam energy and are found to be remarkably similar. Evidence for secondary production of K+ by meson-baryon rescattering is reviewed. Our results at y = 1.0–1.5 are compared with neutral strange particle results at midrapidity.

Published
1992

10. A Search for weakly interacting neutral particles in missing energy events in 450-GeV/c p N collisions

Author

Venetios Polychronakos, H. Kraner, Paolo Giubellino, N. DiGiacomo, Franco Meddi, M. Clemen, Vincent Hedberg, Serge Smirnov, S. Nilsson, M. Sekimoto, L. Šándor, Torsten Paul Ake Åkesson, A. Shmeloeva, S. Muraviev, A. Drees, P. Nevski, C. Leroy, J. P. Pansart, M. Seman, V. Kroh, F. Lamarche, A. Pfeiffer, A. L. S. Angelis, Y. M. Park, E. Stern, B. V. Jacak, H. Bøggild, V. Bisi, Richard Wigmans, V. Sidorov, D. Lissauer, Francois Corriveau, Vladimir Tikhomirov, S. Johannson, S. DiLiberto, Ulf Mjörnmark, C.W. Fabjan, P. L. McGaughey, R. Heifetz, J. R. Dodd, A. Gaidot, L. Olsen, P. Yepes, M. J. Price, I. Stumer, Rob Veenhof, H. Atherton, H. Beker, V. Tcherniatin, A. Kalinovski, R. Haglund, S. Dagan, Peter Glassel, P. Aubry, A. Marzari-Chiesa, P. Pomianowski, H. En'yo, Gilbert Poulard, S. Almehed, G. Beaudoin, H. W. Bartels, L. Riccati, J. A. Thompson, M. J. Esten, G. Vasseur, Yona Oren, Peter Fischer, B. Erlandsson, N. A. McCubbin, F. Martelli, B. Lörstad, S. Simone, H. J. Specht, G. Romano, W.E. Sondheim, D. Bettoni, Matthias Neubert, M. A. Mazzoni, Y. Sirois, Jurgen Schukraft, G. Rosa, D.C. Rahm, Y. Murray, I. Blevis, H. Sletten, P. Depommier, Massimo Masera, J. Sunier, F. Gibrat-Debu, Odette Benary, W. J. Willis, A. Holscher, S. Dell'Uomo, A. Lounis, L. A. Hamel, F. Piuz, Göran Jarlskog, W. E. Cleland, B. A. Dolgoshein, M. T. Muciaccia, A. Nikitin, L. Ramello, H. W. Van Hecke, G. London, M. L. McCubbin, K. Dederichs, Ulrich Goerlach, E. Mazzucato, and J. M. Beaulieu

Subjects
Physics, Particle physics, Missing energy, Physics and Astronomy (miscellaneous), particle physics, weak interactions, Function (mathematics), Nuclear physics, Subatomic particle, Neutrino, Nuclear Experiment, Engineering (miscellaneous), Event (particle physics), Particle Physics - Experiment, Energy (signal processing)
Abstract

We have measured the inclusive cross-section as a function of missing energy, due to the production of neutrinos or new weakly interacting neutral particles in 450 GeV/c proton-nucleus collisions, using calorimetric measurements of visible event energy. Upper limits are placed on the production of new particles as a function of their energy. These upper limits are typically an order

Published
1991

11. Measurement of the transverse energy flow in nucleus-nucleus collisions at 200-GeV per nucleon

Author

B. V. Jacak, Torsten Paul Ake Åkesson, V. Kroh, A. Pfeiffer, H. Bøggild, G. Beaudoin, M. A. Mazzoni, L. Ramello, R. C. E. Devenish, W. E. Cleland, H. Beker, B. Sellden, E. Mazzucato, J. M. Beaulieu, Jurgen Schukraft, L. Riccati, Richard Wigmans, G. London, Ulrich Goerlach, C. Leroy, D.C. Rahm, H. W. Van Hecke, Rob Veenhof, Z. Fraenkel, A. L. S. Angelis, Y. M. Park, V. Sidorov, A. Marzari-Chiesa, H. W. Bartels, I. Stumer, Göran Jarlskog, G. Rosa, Venetios Polychronakos, Peter Fischer, J. Sunier, H. Kraner, K. Dederichs, M. Clemen, S. Simone, Peter Glassel, P. Aubry, W.E. Sondheim, A. Dress, Hans Henrik Thodberg, N. DiGiacomo, S. Dagan, V. Bisi, L. Šándor, A. Gaidot, P. Yepes, P. Depommier, S. Almehed, Paolo Giubellino, Vincent Hedberg, S. Nilsson, M. Sekimoto, Gilbert Poulard, J. A. Thompson, G. Vasseur, Serge Smirnov, S. Di Liberto, Odette Benary, Franco Meddi, Sverker Johansson, B. Erlandsson, Massimo Masera, H. J. Specht, J. P. Pansart, Francois Corriveau, Ulf Mjörnmark, R. Heifetz, S. Dell'Uomo, D. Lissauer, P. L. McGaughey, Alevtina Shmeleva, J. R. Dodd, A. Lounis, F. Lamarche, M. J. Price, N. A. McCubbin, B. Lörstad, M. Murray, H. Sletten, G. Romano, C.W. Fabjan, D. Bettoni, I. Tserruya, N. Armenise, H. Atherton, B. Collick, I. Blevis, R. Haglund, Matthias Neubert, F. Martelli, Y. Sirois, F. Gibrat-Debu, V. Tcherniatin, M. J. Esten, S. Muraviev, Yona Oren, W. J. Willis, A. Holscher, H. En'yo, L. A. Hamel, F. Piuz, B. A. Dolgoshein, M. T. Muciaccia, Vladimir Tikhomirov, L. Olsen, and M. Seman

Subjects
Physics, Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Heavy Ion Physics, Nuclear Theory, Nuclear matter, transverse energy flow, Spectral line, Nuclear physics, Transverse plane, medicine.anatomical_structure, heavy-ions, Energy flow, multiplicity, medicine, Stopping power (particle radiation), High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Particle Physics, Nucleus, Particle Physics - Experiment
Abstract

Measurement of the transverse energy flow in nucleus-nucleus collisions at 200 GeV per nucleon

Published
1991

12. Diffraction dissociation of nuclei in 450 GeV/c proton-nucleus collisions

Author

M. Faessler, M. Clemen, W.E. Sondheim, H. En'yo, Matthias Neubert, P. Yepes, Gilbert Poulard, N. DiGiacomo, B. Erlandsson, L. Šándor, P. Depommier, Y. Sirois, Vincent Hedberg, Serge Smirnov, F. Gibrat-Debu, C. Leroy, Alevtina Shmeleva, Yona Oren, Göran Jarlskog, F. Lamarche, M. Sekimoto, A. Marzari-Chiesa, S. Almehed, H. W. Bartels, H. Beker, W. J. Willis, J. A. Thompson, G. Vasseur, A. L. S. Angelis, A. Gaidot, Y. M. Park, V. Sidorov, Peter Fischer, B. Lörstad, G. Romano, L. Riccati, A. Holscher, I. Stumer, N. A. McCubbin, S. Muraviev, Vladimir Tikhomirov, L. A. Hamel, Odette Benary, J. P. Pansart, C.W. Fabjan, G. Beaudoin, S. Johanson, F. Piuz, W. E. Cleland, B. V. Jacak, V. Tcherniatin, L. Olsen, Rob Veenhof, Z. Fraenkel, V. Bisi, M. Murray, S. Dell'Uomo, Francois Corriveau, M. J. Esten, H. Sletten, H. J. Specht, P. L. McGaughey, A. Lounis, Sven Gösta Nilsson, J. Sunier, J. R. Dodd, M. J. Price, Peter Glassel, P. Aubry, M. T. Muciaccia, Hans Henrik Thodberg, G. Rosa, D. Lisauer, M. Seman, Torsten Paul Ake Åkesson, B. A. Dolgoshein, S. Simone, G. London, Ulrich Goerlach, S. Dagan, A. Drees, V. Kroh, A. Pfeiffer, H. Bøggild, S. DiLiberto, I. Tserruya, H. Atherton, R. Haglund, F. Martelli, M. A. Mazzoni, R. C. E. Devenish, L. Ramello, H. W. Van Hecke, Paolo Giubellino, Venetios Polychronakos, H. Kraner, B. Collick, Richard Wigmans, I. Blevis, D. Bettoni, Ulf Mjörnmark, R. Heifetz, Massimo Masera, Jurgen Schukraft, D.C. Rahm, E. Mazzucato, J. M. Beaulieu, K. Dederichs, and Franco Meddi

Subjects
Physics, education.field_of_study, Physics and Astronomy (miscellaneous), Proton, Population, Nuclear dissociation, diffractive proton nucleus collisions, Elementary particle, Super Proton Synchrotron, Dissociation (chemistry), Nuclear physics, Rapidity, Atomic physics, Nuclear Experiment, education, Nucleon, Engineering (miscellaneous), Excitation, Particle Physics - Experiment
Abstract

Diffractive dissociation of nuclei (Be, Al, W) in collisions with 450 GeV/c protons,pA→pX, has been measured with the HELIOS spectrometer at the CERN Super Proton synchrotron. The dependence of the single-diffraction cross-section on the nuclear massA can be parametrized as σSD mb×A0.35±0.02, showing the peripheral nature of the process. The differential cross-section dσSD=(3.8±0.3)mb ×A0.35±0.02, is exponential with the slope parameter, increasing from 6.2±0.4 (GeV/c)−2 for beryllium to 7.9±0.5 (GeV/c)−2 for tungsten. The slope parameter also increases with increasing massMX of the diffractively produced state. The rapidity, multiplicity, and transverse-momentum distributions of the particles of the diffractively produced stateX show a longitudinal phase-space population and are remarkably insensitive to the nuclear mass. This, together with theA1/3 dependence of σSD, suggests that the dominant process of nuclear diffractive excitation is the dissociation of single nucleons.

Published
1990

13. Charged-particle multiplicity distributions in oxygen-nucleus collisions at 60 and 200 GeV per nucleon

Author

Peter Glassel, P. Aubry, S. Dell'Uomo, I. Tserruya, H. Atherton, Hans Henrik Thodberg, G. Beaudoin, A. Lounis, A. Gaidot, N. DiGiacomo, B. Lörstad, G. Romano, R. Haglund, F. Corriveau, Vincent Hedberg, Boris Dolgoshein, B. Sellden, G. Rosa, M. T. Muciaccia, A. Marzari-Chiesa, Venetios Polychronakos, H. W. Bartels, S. Muraviev, E. Mazzucato, H. Beker, J. M. Beaulieu, K. Dederichs, Peter Fischer, L. Riccati, C. Leroy, M. Clemen, S. Dagan, Paolo Giubellino, H. J. Specht, A. Holscher, B. V. Jacak, J. Soltani, H. Kraner, L. Olsen, V. Bisi, A. L. S. Angelis, P. Depommier, Sergei Smirnov, Y. M. Park, V. Sidorov, J. Sunier, D. Bettoni, D. Lissauer, F. Lamarche, M. A. Mazzoni, F. Piuz, N. Armenise, I. Stumer, Franco Meddi, L. A. Hamel, M. L. McCubbin, G. Vasseur, R. C. E. Devenish, Massimo Masera, W.E. Sondheim, S. Nilsson, Z. Fraenkel, Matthias Neubert, V. Tikhomirov, L. Ramello, M. Sekimoto, Y. Sirois, P. Yepes, M. Murray, H. Sletten, Gilbert Poulard, Richard Wigmans, Jurgen Schukraft, J. P. Pansart, B. Erlandsson, D.C. Rahm, F. Gibrat-Debu, V. Tcherniatin, S. Simone, M. J. Esten, G. London, H. W. Van Hecke, P. L. McGaughey, Ulrich Goerlach, J. R. Dodd, M. Seman, H. En'yo, M. J. Price, V. Kroh, R. Veenhof, A. Pfeiffer, H. Bøggild, S. DiLiberto, Torsten Paul Ake Åkesson, A. Shmeleva, Sverker Johansson, S. Almehed, Ulf Mjörnmark, J. A. Thompson, R. Heifetz, F. Martelli, B. Collick, I. Blevis, Yona Oren, W. E. Cleland, L. Šándor, C.W. Fabjan, Göran Jarlskog, A. Dress, and Odette Benary

Subjects
Nuclear and High Energy Physics, Particle physics, HELIOS, Nuclear Theory, chemistry.chemical_element, Oxygen, Nuclear physics, medicine, multiplicity, Physics::Chemical Physics, Multiplicity (chemistry), Nuclear Experiment, heavy ions, Particle Physics, Physics, Heavy Ion Physics, Charged particle, medicine.anatomical_structure, Monte Carlo comparison, chemistry, High Energy Physics::Experiment, Nucleon, Nucleus, Particle Physics - Experiment
Abstract

Charged-particle multiplicity distributions in oxygen-nucleus collisions at 60 and 200 GeV per nucleon

Published
1990

14. Inclusive Photon Production in P a and A-a Collisions at 200-{GeV}/u

Author

C.W. Fabjan, I. Tserruya, H. Atherton, R. Haglund, G. Beaudoin, U. Goerlach, S. Nilsson, M. Sekimoto, A. Marzari-Chiesa, H. W. Bartels, L. Šándor, Sergei Smirnov, B. Sellden, M. J. Esten, J. P. Pansart, S. Muraviev, F. Lamarche, Yona Oren, Gilbert Poulard, V. Toherniatin, S. Dagan, M. A. Mazzoni, C. Leroy, Paolo Giubellino, E. Mazzucato, Peter Fischer, J. M. Beaulieu, Franco Meddi, R. C. E. Devenish, V. Sidoroy, B. Erlandsson, A. Holscher, Torsten Paul Ake Åkesson, M. T. Muciaccia, W. E. Cleland, A. L. S. Angelis, N. A. McCubbin, J. Soltani, Y. M. Park, S. Almehed, V. Kroth, I. Stumer, L. Ramello, V. Bisi, N. Armenise, Jurgen Schukraft, S. Simone, D.C. Rahm, Richard Wigmans, G. Vasseur, Odette Benary, J. A. Thompson, A. Shmeleva, L. A. Hamel, Z. Fraenkel, Matthias Neubert, A. Gaidot, L. Olsen, H. En'yo, F. Martelli, Göran Jarlskog, Y. Sirois, S. Di Liberto, V. Tikhomirov, A. Drees, B. Dogolshein, M. L. McCubbin, G. Rosa, R. Veenhoff, M. Murray, K. Dederichs, A. Pfeiffer, Sverker Johansson, S. Dell'Uomo, P. McGaughey, H. Bøggild, H. Sletten, A. Lounis, Francois Corriveau, J. R. Dodd, Ulf Mjörnmark, B. Collick, I. Blevis, F. Gibrat-Debu, R. Heifetz, M. J. Price, M. Seman, Peter Glassel, P. Aubry, H. J. Specht, J. Sunier, Hans Henrik Thodberg, H. W. Van Hecke, Massimo Masera, H. Beker, P. Depommier, P. Yepes, L. Riccati, W. Sondheim, Venetios Polychronakos, G. London, H. Kraner, B. Lörstad, G. Romano, M. Clemen, D. Bettoni, D. Lissauer, B. V. Jacak, N. DiGiacomo, Vincent Hedberg, and F. Piuz

Subjects
Nuclear reaction, Physics, Particle physics, Physics and Astronomy (miscellaneous), Proton, Meson, HELIOS, Heavy Ion Physics, Branching fraction, Hadron, photon spectra, Particle Physics, Charged particle, Nuclear physics, Particle decay, Pion, heavy ions, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Inclusive photonp⊥ spectra were measured with 200 GeV/u proton,16O and32S beams on W and Pt targets, using a conversion method. The measurement of charged pions in the same apparatus allows a comparison of the γ data with the expected γ's from hadronic decays π0, η, η', ω). In all data sets, no deviation from the expected shape is observed in the range of 0.1 0.1 GeV/c andp⊥>0.6 GeV/c.

Published
1990

15. An emulsion study of 16O and 32S interactions at 200 GeV per nucleon selected by transverse energy

Author

A. Gaidot, W.E. Sondheim, Sergei Smirnov, F. Lamarche, M. Kazuno, H. Tajima, Paolo Giubellino, B. V. Jacak, Richard Wigmans, G. Beaudoin, M. L. McCubbin, K. Dederichs, V.A. Sidorov, P. Yepes, V. Bisi, Y. Kobayashi, V. Kroh, Boris Dolgoshein, Kazuhito Tsukagoshi, S. Nakanishi, Yona Oren, G. Rosa, A. Marzari-Chiesa, L. Ramello, N. DiGiacomo, H. W. Bartels, Gilbert Poulard, S. Nilsson, M. Sekimoto, H. J. Specht, A.C. Breslin, A. Pfeiffer, Franco Meddi, Vincent Hedberg, Peter Fischer, E. Mazzucato, J. M. Beaulieu, D. Bettoni, J. Soltani, Makoto Kobayashi, H. Beker, Jurgen Schukraft, B. Erlandsson, Kazuma Nakazawa, H. Bøggild, J. P. Pansart, B. Sellden, B. Collick, D.C. Rahm, I. Blevis, S. Di Liberto, L. Riccati, I. Tserruya, K. Niu, H. Atherton, Sverker Johansson, R. Haglund, K. Nakamura, S. Almehed, S. Sartori, Rob Veenhof, Z. Fraenkel, Massimo Masera, J. A. Thompson, G. Vasseur, C.W. Fabjan, S. Watanabe, Ulf Mjörnmark, S. Muraviev, F. Piuz, Odette Benary, M. Clemen, R. Heifetz, H. W. Van Hecke, C. Leroy, M. A. Mazzoni, S. Dagan, C. Sgarbi, A. Drees, R. C. E. Devenish, H. Kitamura, M. Nomura, Peter Glassel, P. Aubry, Koichi Kodama, Venetios Polychronakos, Motoaki Miyanishi, Francois Corriveau, A. L. S. Angelis, S. Dell'Uomo, Y. M. Park, D. Lissauer, Hans Henrik Thodberg, L. Šándor, A. Lounis, P. L. McGaughey, N. Ushida, I. Stumer, J. Sunier, G. Baroni, H. Shibuya, S. Simone, M. J. Price, B. Lörstad, H. Kraner, Shigeki Aoki, G. Romano, Kimio Niwa, M. Seman, Alevtina Shmeleva, Torsten Paul Ake Åkesson, J.R. Dodd, D.H. Davis, H. En'yo, G. London, G. Grella, Göran Jarlskog, D.N. Tovee, N. Armenise, K. Hoshino, P. Depommier, Ulrich Goerlach, Matthias Neubert, Vladimir Tikhomirov, T. Ishigami, Y. Sirois, L. Olsen, V. Tcherniatin, M. J. Esten, A. Holscher, L. A. Hamel, F. Gibrat-Debu, M. Murray, H. Sletten, M. T. Muciaccia, Y. Umezawa, and W. E. Cleland

Subjects
Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Nuclear Theory, Hadron, Elementary particle, Nuclear emulsions, Nuclear physics, multiplicity, heavy ions, Nuclear Experiment, Physics, Ioni ultrarelativistici, Heavy Ion Physics, Multiplicity (mathematics), Charged particle, hybrid experiment, transverse energy, Condensed Matter::Soft Condensed Matter, Transverse plane, Emulsion, High Energy Physics::Experiment, Nucleon, Particle Physics - Experiment
Abstract

An emulsion study of 16O and 32S interactions at 200 GeV per nucleon selected by transverse energy

Published
1990

16. The transverse energy distribution in16O-nucleus collisions at 60 and 200 GeV per nucleon

Author

M. Clemen, M. J. Esten, D. Bettoni, Franco Meddi, D. Lissauer, M. Faessler, C. Leroy, Paolo Giubellino, S. Dell'Uomo, M. A. Mazzoni, P. Shotton, V. Bisi, R.C.E. Devenish, A. L. S. Angelis, Y. M. Park, V. Sidorov, F.F. Heymann, R. Chechik, J. M. Beaulieu, Torsten Paul Ake Åkesson, I. Stumer, P. Depommier, A. Gaidot, G. Jarslkog, H. Beker, Venetios Polychronakos, W. J. Willis, A. Holscher, H. En'yo, Odette Benary, B. Lörstad, C.W. Fabjan, A. Sumarokov, L. Riccati, Richard Wigmans, V. Kroh, V. Tcherniatin, L. A. Hamel, A. Marzari-Chiesa, G. Beaudoin, K. Dederichs, S. Nilsson, M. Sekimoto, I. Tserruya, A. Pfeiffer, H. Atherton, F. Piuz, Massimo Masera, A. Lounis, N. Armenise, R. Haglund, H. Kraner, H. W. Bartels, Gilbert Poulard, P. McGaughey, H. Bøggild, G. Romano, Francois Corriveau, I. Gavrilenko, Matthias Neubert, Yona Oren, Sergei Smirnov, B. Erlandsson, T. Ludlam, S. Almehed, Y. Sirois, N. Di Giacomo, J. P. Pansart, B. Sellden, F. Lamarche, G. Rosa, S. Dagan, J. R. Dodd, U. Goerlach, Peter Fischer, J. A. Thompson, Jurgen Schukraft, S. Mayburov, D.C. Rahm, M. J. Price, J. Russ, J. Sunier, J. Soltani, S. Simone, P. Nevski, M. L. McCubbin, M. Seman, N. A. McCubbin, L. Ramello, H. J. Specht, Z. Fraenkel, H. W. Van Hecke, L. Olsen, Amos Breskin, V. Tikhomirov, G. London, Boris Dolgoshein, M. Murray, H. Sletten, F. Gibrat-Debu, A. Shmeleva, R. Roosen, S. Di Liberto, Sverker Johansson, Ulf Mjörnmark, Stephan J. Huber, R. Heifetz, A. Kantserov, W. E. Cleland, W. Sondheim, A. Dress, B. Collick, I. Blevis, B. V. Jacak, J. H. Bartley, M. T. Muciaccia, Vincent Hedberg, P. T. Trent, H. Ries, A. Kalinovski, Peter Glassel, P. Aubry, and Hans Henrik Thodberg

Subjects
Physics, Nuclear reaction, Particle physics, Physics and Astronomy (miscellaneous), Heavy Ion Physics, Nuclear Theory, Carbon-12, Parton, Alpha particle, Charged particle, Nuclear physics, Orders of magnitude (time), Pseudorapidity, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

Transverse-energy distributions have been measured in the pseudorapidity region −0.12.9 decreases with increasingA. The distributions are compared with the predictions of a dual parton model. Finally the question of the energy density is addressed.

Published
1988

17. Charged-particle multiplicity near midrapidity in central Au+Au collisions at sqrt[SNN]=56 and 130 GeV.

Author

Back BB, Baker MD, Barton DS, Basilev S, Bates BD, Baum R, Betts RR, Białas A, Bindel R, Bogucki W, Budzanowski A, Busza W, Carroll A, Ceglia M, Chang YH, Chen AE, Coghen T, Conner C, Czyz W, Dabrowski B, Decowski MP, Despet M, Fita P, Fitch J, Friedl M, Gałuszka K, Ganz R, Garcia E, George N, Godlewski J, Gomes C, Griesmayer E, Gulbrandsen K, Gushue S, Halik J, Halliwell C, Haridas P, Hayes A, Heintzelman GA, Henderson C, Hollis R, Hołyński R, Holzman B, Johnson E, Kane J, Katzy J, Kita W, Kotuła J, Kraner H, Kucewicz W, Kulinich P, LawV C, Lemler M, Ligocki J, Lin WT, Manly S, McLeod D, Michałowski J, Mignerey A, Mülmenstädt J, Neal M, Nouicer R, Olszewski A, Pak R, Park IC, Patel M, Pernegger H, Plesko M, Reed C, Remsberg LP, Reuter M, Roland C, Roland G, Ross D, Rosenberg L, Ryan J, Sanzgiri A, Sarin P, Sawicki P, Scaduto J, Shea J, Sinacore J, Skulski W, Steadman SG, Stephans GS, Steinberg P, Straczek A, Stodulski M, Strek M, Stopa Z, Sukhanov A, Surowiecka K, Tang JL, Teng R, Trzupek A, Vale C, van Nieuwenhuizen GJ, Verdier R, Wadsworth B, Wolfs FL, Wosiek B, Woźniak K, Wuosmaa AH, Wysłouch B, Zalewski K, and Zychowski P

Abstract

We present the first measurement of pseudorapidity densities of primary charged particles near midrapidity in Au+Au collisions at sqrt[s(NN)] = 56 and 130 GeV. For the most central collisions, we find the charged-particle pseudorapidity density to be dN/deta|(|eta|<1) = 408+/-12(stat)+/-30(syst) at 56 GeV and 555+/-12(stat)+/-35(syst) at 130 GeV, values that are higher than any previously observed in nuclear collisions. Compared to proton-antiproton collisions, our data show an increase in the pseudorapidity density per participant by more than 40% at the higher energy.

Published
2000
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