Author: "Gladysz E" - Searchworks@Jio Institute Digital Library Search Results

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243 results on '"Gladysz E"'

1. Inclusive production of charged kaons in p+p collisions at 158 GeV/c beam momentum and a new evaluation of the energy dependence of kaon production up to collider energies

Author: The NA49 Collaboration, Anticic, T., Baatar, B., Bartke, J., Betev, L., Białkowska, H., Boimska, B., Bracinik, J., Cerny, V., Chvala, O., Dolejsi, J., Eckardt, V., Fischer, H. G., Fodor, Z., Gładysz, E., Kadija, K., Karev, A., Kolesnikov, V., Kowalski, M., Kreps, M., Makariev, M., Malakhov, A., Mateev, M., Melkumov, G., Rybicki, A., Schmitz, N., Seyboth, P., Susa, T., Szymanski, P., Trubnikov, V., Varga, D., Vesztergombi, G., and Wenig, S.
Subjects: High Energy Physics - Experiment
Abstract: New data on the production of charged kaons in p+p interactions are presented. The data come from a sample of 4.8 million inelastic events obtained with the NA49 detector at the CERN SPS at 158 GeV/c beam momentum. The kaons are identified by energy loss in a large TPC tracking system. Inclusive invariant cross sections are obtained in intervals from 0 to 1.7 GeV/c in transverse momentum and from 0 to 0.5 in Feynman x. Using these data as a reference, a new evaluation of the energy dependence of kaon production, including neutral kaons, is conducted over a range from 3 GeV to p+anti-p collider energies., Comment: 106 pages, 136 figures
Published: 2010
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2. Event-by-event transverse momentum fluctuations in nuclear collisions at CERN SPS

Author: Grebieszkow, K., Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Białkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Bunčić, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csató, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gál, J., Gaździcki, M., Genchev, V., Georgopoulos, G., Gładysz, E., Hegyi, S., Höhne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Lévai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnár, J., Mrówczyński, St., Nicolic, V., Pálla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Pühlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczyński, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Siklér, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Ströbele, H., Susa, T., Szentpétery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Wetzler, A., Włodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimányi, J.
Subjects: Nuclear Experiment
Abstract: The latest NA49 results on event-by-event transverse momentum fluctuations are presented for central Pb+Pb interactions over the whole SPS energy range (20A - 158A GeV). Two different methods are applied: evaluating the $\Phi_{p_{T}}$ fluctuation measure and studying two-particle transverse momentum correlations. The obtained results are compared to predictions of the UrQMD model. The results on the energy dependence are compared to the NA49 data on the system size dependence. The NA61 (SHINE, NA49-future) strategy of searching of the QCD critical end-point is also discussed., Comment: proceedings article from CPOD07 (figure 7 - updated, reference 2 - modified)
Published: 2007

3. Production of phi-mesons in p+p, p+Pb and central Pb+Pb collisions at Ebeam = 158 A GeV

Author: Afanasiev, S.V., Anticic, T., Bachler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Bracinik, J., Brady, F.P., Brun, R., Buncic, P., Carr, L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Eckardt, V., Eckhardt, F., Ferenc, D., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Ftacnik, J., Gal, J., Ganz, R., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Harris, J.W., Hegyi, S., Hlinka, V., Hohne, C., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Mischke, A., Molnar, J., Nelson, J.M., Odyniec, G., Oldenburg, M.D., Palla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strmen, P., Strobele, H., Susa, T., Szarka, I., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., and Varga, D.
Published: 2000

4. Centrality Dependence of Directed and Elliptic Flow at the SPS

Author: Poskanzer, Arthur M., Voloshin, Sergei A., NA49 Collaboration, Bachler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Bracinik, J., Brady, F.P., Brockmann, R., Brun, R., Buncic, P., Carr, L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Eckardt, V., Eckhardt, F., Ferenc, D., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Ftacnik, J., Gal, J., Ganz, R., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Harris, J.W., Hegyi, S., Hlinka, V., Hohne, C., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Molnar, J., Nelson, J.M., Odyniec, G., Oldenburg, M.D., Palla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strmen, P., Stroebele, H., Susa, T., Szarka, I., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., and Ullrich, T.
Subjects: relativistic SPS NA49 flow centrality
Abstract: New data with a minimum bias trigger for 158 GeV/nucleon Pb + Pb have been analyzed. Directed and elliptic flow as a function of rapidity of the particles and centrality of the collision are presented. The centrality dependence of the ratio of elliptic flow to the initial space elliptic anisotropy is compared to models.
Published: 1999

5. Hadronic expansion dynamics in central Pb+Pb collisions at 158 GeV per nucleon

Author: Appelshäuser, H, Bächler, J, Bailey, SJ, Barnby, LS, Bartke, J, Barton, RA, Białkowska, H, Billmeier, A, Blyth, CO, Bock, R, Bormann, C, Brady, FP, Brockmann, R, Brun, R, Bunčić, P, Caines, HL, Cebra, D, Cooper, GE, Cramer, JG, Csato, P, Dunn, J, Eckardt, V, Eckhardt, F, Ferguson, MI, Ferenc, D, Fischer, HG, Flierl, D, Fodor, Z, Foka, P, Freund, P, Friese, V, Fuchs, M, Gabler, F, Gal, J, Gaździcki, M, Gladysz, E, Grebieszkow, J, Günther, J, Harris, JW, Hegyi, S, Henkel, T, Hill, LA, Huang, I, Hümmler, H, Igo, G, Irmscher, D, Jacobs, P, Jones, PG, Kadija, K, Kolesnikov, VI, Kowalski, M, Lasiuk, B, Lévai, P, Malakhov, AI, Margetis, S, Markert, C, Melkumov, GL, Mock, A, Molnár, J, Nelson, JM, Oldenburg, M, Odyniec, G, Palla, G, Panagiotou, AD, Petridis, A, Piper, A, Porter, RJ, Poskanzer, AM, Poziombka, S, Prindle, DJ, Pühlhofer, F, Rauch, W, Reid, JG, Renfordt, R, Retyk, W, Ritter, HG, Röhrich, D, Roland, C, Roland, G, Rudolph, H, Rybicki, A, Sandoval, A, Sann, H, Semenov, AY, Schäfer, E, Schmischke, D, Schmitz, N, Schönfelder, S, Seyboth, P, Seyerlein, J, Sikler, F, Skrzypczak, E, Squier, GTA, Stock, R, Ströbele, H, Struck, C, Szentpetery, I, Sziklai, J, Toy, M, and Trainor, TA
Subjects: Nuclear & Particles Physics, Quantum Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract: Two-particle correlation functions of negative hadrons over wide phase space, and transverse mass spectra of negative hadrons and deuterons near mid-rapidity have been measured in central Pb+Pb collisions at 158 GeV per nucleon by the NA49 experiment at the CERN SPS. A novel Coulomb correction procedure for the negative two-particle correlations is employed making use of the measured oppositely charged particle correlation. Within an expanding source scenario these results are used to extract the dynamic characteristics of the hadronic source, resolving the ambiguities between the temperature and transverse expansion velocity of the source, that are unavoidable when single and two particle spectra are analysed separately. The source shape, the total duration of the source expansion, the duration of particle emission, the freeze-out temperature and the longitudinal and transverse expansion velocities are deduced.
Published: 1998

6. First Results from NA49 on Pb+Pb Collisions at 158 GeV/Nucleon

Author: Margetis, S., Alber, T., Appelshauser, H., Bachler, J., Bartke, J., Bialkowska, H., Bieser, F., Bloomer, M.A., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Buncic, P., Caines, H.L., Cebra, D., Chan, P., Cooper, G., Cramer, J.G., Cramer, P.B., Csato, P., Derado, I., Dunn, J., Eckardt, V., Eckhardt, F., Euler, S., Ferguson, M.I., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Fuchs, M., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Heck, W., Hegyi, S., Hill, L.A., Huang, I., Howe, M.A., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kecskemeti, J., Kosiec, J., Kowalski, M., Kuhmichel, A., Lasiuk, B., Mitchell, J.W., Mock, A., Nelson, J.M., Odyniec, G.J., Palinkas, J., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Rauch, W., Renfordt, R., Retyk, W., Ritter, Hans G., Rohrich, D., Rudolph, H., Runge, K., Sandoval, A., Sann, H., Schaefer, E., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Stefansky, P., Stock, R., Stroebele, H., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Vassiliou, M., Vesztergombi, G., Vranic, D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Zimanyi, J., Zhu, X.-Z., and Zybert, R.
Published: 1995

7. Transverse Energy Production in {sup 208}Pb+Pb Collisions at 158 GeV per Nucleon

Author: Margetis, S., Alber, T., Appelshauser, H., Bachler, J., Bartke, J., Bialkowska, H., Bieser, F., Bloomer, M.A., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Buncic, P., Caines, H.L., Cebra, D., Chan, P., Cooper, G.E., Cramer, J.G., Cramer, P.B., Csato, P., Derado, I., Dunn, J., Eckardt, V., Eckhardt, F., Euler, S., Ferguson, M.I., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Fuchs, M., Gal, J., Gasdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Heck, W., Hegyi, S., Hill, L.A., Huang, I., Howe, M.A., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kecskemeti, J., Kowalski, M., Kuhmichel, A., Lsdiuk, B., Mitchell, J.W., Mock, A., Nelson, J.M., Odyniec, G.J., Palinkas, J., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Poskanzer, A.M., Prindle, D.J., Puhlhofer, F., Rauch, W., Renfordt, R., Retyk, W., Ritter, Hans G., Rohrich, D., Rudolph, H., Runge, K., Sandoval, A., Sann, H., Schafer, E., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Stock, R., Stroebele, H., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Vassiliou, M., Vesztergombi, G., Vranic, D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Zimanyi, J., Zhu, X.-Z., and Zybert, R.
Published: 1994

8. Transverse Momentum Dependence of Bose-Einstein Correlations in 200A GeV/c S+A Collisions

Author: Alber, Th., Bachler, J., Bartke, J., Bialkowska, H., Bloomer, M.A., Bock, R., Braithwaite, W.J., Brinkmann, D., Brockmann, R., Buncic, P., Chan, P., Cramer, P.B., Cramer, J.G., Derado, I., Eckardt, V., Eschke, J., Favuzzi, C., Ferenc, D., Fleischmann, B., Foka, P., Freund, P., Fuchs, M., Gazdzicki, M., Gladysz, E., Harris, J.W., Hoffman, M., Jacobs, P., Kabana, S., Kadija, K., Kosiec, J., Kowalski, M., Kuhmichel, A., Lahanas, M., Lee, J.Y., Ljubicic, A., Margetis, S., Mitchell, J.T., Morse, R.J., Nappi, E., Odyniec, G.J., Paic, G., Panagiotou, A.D., Petridis, A., Piper, A., Posa, F., Poskanzer, A.M., Puhlhofer, F., Rauch, W., Renfordt, R., Retyk, W., Rohrich, D., Roland, G., Rothard, H., Runge, K., Sandoval, A., Schambach, J., Schmitz, N., Schmoetten, E., Schneider, I., Seyboth, P., Seyerlein, J., Skrzypczak, E., Spinelli, P., Stefansky, P., Stock, R., Stroebele, H., Trainor, T.A., Vasileiadis, G., Vassiliou, M., Vranic, D., Wenig, S., and Wosiek, B.
Published: 1994

9. Recent Results from the NA49 Experiment

Author: Blume, C., Botje, M., van Leeuwen, M., Christakoglou, P., Georgopoulos, G., Panagiotou, A. D., Vassiliou, M., Petridis, A., Pikna, M., Cerny, V., Bracinik, J., Kreps, M., Sitar, B., Barna, D., Csato, P., Fodor, Z., Gal, J., Hegyi, S., Levai, P., Molnar, J., Palla, G., Siklér, F., Varga, D., Szentpetery, I., Veres, G. I., Zimanyi, J., Vesztergombi, G., Sziklai, J., Roland, C., Roland, G., Bartke, J., Gladysz, E., Kornas, E., Kowalski, M., Rybicki, A., Kraus, I., Foka, P., Friese, V., Markert, C., Mischke, A., Sandoval, A., Sann, H., Vranic, D., Baatar, B., Malakhov, A. I., Kolesnikov, V. I., Melkumov, G. L., Kollegger, T., Meurer, C., Betev, L., Billmeier, A., Bramm, R., Dinkelaker, P., Flierl, D., Gazdzicki, M., Mitrovski, M., Stock, R., Ströbele, H., Zaranek, J., Wetzler, A., Renfordt, R., Buncic, P., Brun, R., Fischer, H. G., Wenig, S., Mayes, B. W., Pinsky, L., Korus, R., Mrowczynski, St., Rybczynski, M., Stefanek, G., Wlodarczyk, Z., Behler, M., Höhne, C., Pühlhofer, F., Eckardt, V., Filip, P., Freund, P., Karev, A., Schmitz, N., Seyboth, P., Chvala, O., Yoo, I. K., Cramer, J. G., Reid, J. G., Trainor, T. A., Darmenov, N., Dimitrov, A., Litov, L., Makariev, M., Mateev, M., Panayotov, D., Bialkowska, H., Boimska, B., Perl, K., Retyk, W., Skrzypczak, E., Susa, T., Anticic, T., Kadija, K., Greiner, Walter, editor, Itkis, Mikhail G., editor, Reinhardt, Joachim, editor, and Güçlü, Mehmet Cem, editor
Published: 2004
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10. Search for deconfinement in NA49 at the CERN SPS

Author: Seyboth, Peter, Afanasiev, S. V., Anticic, T., Barna, D., Bartke, J., Barton, R. A., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C. O., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Brun, R., Bunci, P., Cerny, V., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Filip, P., Fischer, H. G., Fodor, Z., Foka, P., Freund, P., Friese, V., Gal, J., Gaździcki, M., Georgopoulos, G., Gladysz, E., Hegyi, S., Hohne, C., Jones, P. G., Kadija, K., Karev, A., Kolesnikov, V. I., Kollegger, T., Kowalski, M., Kraus, I., Kreps, M., van Leeuwen, M., Levai, P., Malakhov, A. I., Markert, C., WMayes, B., Melkumov, G. L., Mischke, A., Molnar, J., Nelson, J. M., Palla, G., Panagiotou, A. D., Perl, K., Petridis, A., Pikna, M., Pinsky, L., Puhlhofer, F., Reid, J. G., Renfordt, R., Retyk, W., Roland, C., Roland, G., Rybicki, A., Sandoval, A., Sann, H., Schmitz, N., Seyboth, Peter, Sikler, F., Sitar, B., Skrzypczak, E., Squier, G. T. A., Stock, R., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Trainor, T. A., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranic, D., Wenig, S., Wetzler, A., KYoo, I., Zaranek, J., and Zimanyi, J.
Published: 2003
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11. Search for the Quark-Gluon Plasma (1989): The NA35 Experiment at the CERN SPS

Author: Pugh, H.G., Bartke, J., Bialkowska, H., Bock, R., Brockmann, R., Chase, S.I., Marzo, C. De, Derado, I., Eckardt, V., Eschke, J., Favuzzi, C., Fent, J., Ferenc, D., Fessler, H., Freund, P., Gazdzicki, M., Gebauer, H.J., Gladysz, E., Guerra, C., Harris, J.W., Hartig, E., Heck, W., Humanic, T., Kadija, K., Kuhmichel, A., Lehanas, M., Lee, Y., Margetis, S., Nappie, E., Odyniec, G.J., Paic, G., Panagiotou, A.D., Petridis, A., Pfennig, J., Posa, F., Pretzl, K.P., Puhlhofer, F., Rai, G., Ranieri, A., Raugh, W., Renfordt, R., Rohrich, D., Rothard, H., Schouten, T., Schroeder, L.S., Selvaggi, G., Seyboth, P., Seyerlein, J., Skrzypczak, E., Sinelli, P., Stock, R., Stroebele, H., Thomas, A., Teitelbaum, L.P., Tonse, S.R., Vesztergombi, G., Branic, D., Wenig, S., and Wensveen, M.
Published: 1989

12. Charged particle multiplicities in nuclear collisions at 200 GeV/N

Author: Bächler, J., Bartke, J., Bialkowska, H., Bock, R., Brockmann, R., Buncic, P., Chase, S. I., Derado, I., Eckardt, V., Eschke, J., Favuzzi, C., Ferenc, D., Fleischmann, B., Foka, P., Fuchs, M., Gazdzicki, M., Gebauer, H. J., Gladysz, E., Guerra, C., Harris, J. W., Heck, W., Hoffmann, M., Humanic, T., Kabana, S., Kadija, K., Karabarbounis, A., Keidel, R., Kosiec, J., Kowalski, M., Kühmichel, A., Lahanas, M., Lee, J. Y., LeVine, M., Ljubicic, Jr., A., Margetis, S., Nappi, E., Odyniec, G., Paic, G., Panagiotou, A. D., Petridis, A., Pfennig, J., Piper, A., Posa, F., Pugh, H. G., Pühlhofer, F., Rai, G., Rauch, W., Renfordt, R., Röhrich, D., Roland, G., Rothard, H., Runge, K., Sandoval, A., Schmidt, E., Schmitz, N., Schmoetten, E., Schneider, I., Schroeder, L. S., Seyboth, P., Seyerlein, J., Skrzypczak, E., Spinelli, P., Stock, R., Ströbele, H., Teitelbaum, L., Thomas, A., Tonse, S., Vasileiadis, G., Vesztergombi, G., Vranic, D., Wenig, S., and NA35 Collaboration
Published: 1991
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13. Study of the energy flow in sulphur-and oxygen-nucleus collisions at 60 and 200 GeV/nucleon

Author: Bächler, J., Bartke, J., Bialkowska, H., Bock, R., Brockmann, R., Buncic, P., Chase, S. I., Derado, I., Eckardt, V., Eschke, J., Favuzzi, C., Ferenc, D., Fleischmann, B., Foka, P., Fuchs, M., Gazdzicki, M., Gebauer, H. J., Gladysz, E., Guerra, C., Harris, J. W., Heck, W., Hoffmann, M., Humanic, T., Kabana, S., Kadija, K., Karabarbounis, A., Keidel, R., Kosiec, J., Kowalski, M., Kühmichel, A., Lahanas, M., Lee, J. Y., LeVine, M., Ljubicic, Jr., A., Margetis, S., Nappi, E., Odyniec, G., Paic, G., Panagiotou, A. D., Petridis, A., Pfennig, J., Piper, A., Posa, F., Pugh, H. G., Pühlhofer, F., Rai, G., Rauch, W., Renfordt, R., Röhrich, D., Roland, G., Rothard, H., Runge, K., Sandoval, A., Schmidt, E., Schmitz, N., Schmoetten, E., Schneider, I., Schroeder, L. S., Seyboth, P., Seyerlein, J., Skrzypczak, E., Spinelli, P., Stock, R., Ströbele, H., Teitelbaum, L., Thomas, A., Tincknell, M., Tonse, S., Vasileiadis, G., Vesztergombi, G., Vranic, D., Wenig, S., and NA35 Collaboration
Published: 1991
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14. Neutral strange particle production in sulphur-sulphur and proton-sulphur collisions at 200 GeV/nucleon

Author: Bartke, J., Bialkowska, H., Bock, R., Brockmann, R., Chase, S. I., Derado, I., Eckardt, V., Eschke, J., Favuzzi, C., Ferenc, D., Fleischmann, B., Fuchs, M., Gazdzicki, M., Gebauer, H. J., Gladysz, E., Guerra, C., Hansen, O., Harris, J. W., Heck, W., Humanic, T., Kadija, K., Kabana, S., Karabarbounis, A., Keidel, K., Kosiec, J., Kowalski, M., Kühmichel, A., Lahanas, M., Lee, J. Y., LeVine, M., Ljubicic, A., Margetis, S., Nappi, E., Odyniec, G., Paic, G., Panagiotou, A. D., Petridis, A., Pfennig, J., Piper, A., Posa, F., Pugh, H. G., Fühlhofer, F., Rai, G., Rauch, W., Renfordt, R., Röhrich, D., Rothard, H., Runge, K., Sandoval, A., Schmidt, E., Schmitz, N., Schmoetten, E., Schneider, I., Schroeder, L. S., Seyboth, P., Seyerlein, J., Skrzypczak, E., Spinelli, P., Stock, R., Ströbele, H., Teitelbaum, L., Thomas, A., Tonse, S., Vassileiadis, G., Vesztergombi, G., Vranic, D., Wenig, S., and NA35 Collaboration
Published: 1990
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15. Centrality dependence of directed and elliptic flow at the SPS

Author: Poskanzer, A.M., Voloshin, S.A., Bächler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Białkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Bracinik, J., Brady, F.P., Brockmann, R., Brun, R., Bunčić, P., Carr, L., Cebra, D., Cooper, G.E., Cramer, J.G., Csató, P., Eckardt, V., Eckhardt, F., Ferenc, D., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Ftacnik, J., Gál, J., Ganz, R., Gaździcki, M., Gładysz, E., Grebieszkow, J., Harris, J.W., Hegyi, S., Hlinka, V., Höhne, C., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lévai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Molnár, J., Nelson, J.M., Odyniec, G., Oldenburg, M.D., Pálla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Prindle, D.J., Pühlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Röhrich, D., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schäfer, E., Schmitz, N., Seyboth, P., Siklér, F., Sitar, B., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strmen, P., Ströbele, H., Susa, T., Szarka, I., Szentpétery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Voloshin, S., Vranić, D., Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Xu, N., Yates, T.A., Yoo, I.K., and Zimányi, J.
Published: 1999
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16. Hadron production in nuclear collisions from the NA49 experiment at 158GeV/ c · A

Author: Siklér, F., Bächler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Białkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Bracinik, J., Brady, F.P., Brun, R., Bunc̆ić, P., Carr, L., Cebra, D., Cooper, G.E., Cramer, J.G., Csató, P., Eckardt, V., Eckhardt, F., Ferenc, D., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Ftacnik, J., Gál, J., Ganz, R., Gaździcki, M., Gładysz, E., Grebieszkow, J., Harris, J.W., Hegyi, S., Hlinka, V., Höhne, C., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lednicky, R., Lévai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Molnár, J., Nelson, J.M., Odyniec, G., Oldenburg, M.D., Pálla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Poskanzer, A.M., Prindle, D.J., Pühlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Röhrich, D., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schäfer, E., Schmitz, N., Seyboth, P., Sitar, B., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strmen, P., Ströbele, H., Susa, T., Szarka, I., Szentpétery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Voloshin, S., Vranić, D., Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Xu, N., Yates, T.A., Yoo, I.K., and Zimányi, J.
Published: 1999
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17. Two-proton correlations from 158 A GeV Pb + Pb central collisions

Author: Appelshäuser, H., Bächler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Białkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Boimska, B., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Bunčić, P., Caines, H.L., Carr, L.D., Cebra, D., Cooper, G.E., Cramer, J.G., Cristinziani, M., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M.I., Fischer, H.G., Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Ganz, R., Gaździcki, M., Geist, W., Gładysz, E., Grebieszkow, J., Günther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hümmler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lednicky, R., Lévai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnár, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Prindle, D.J., Pühlhofer, F., Susa, T., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Röhrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schäfer, E., Schmischke, D., Schmitz, N., Schönfelder, S., Seyboth, P., Sikler, F., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Ströbele, H., Struck, Chr., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Voloshin, S., Vranić, D., Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Wood, L., Xu, N., Yates, T.A., Zimanyi, J., Zhu, X.-Z., and Zybert, R.
Published: 1999
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18. Event-by-event fluctuations of average transverse momentum in central Pb+Pb collisions at 158 GeV per nucleon

Author: Appelshäuser, H., Bächler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Białkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Boimska, B., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Bunčić, P., Caines, H.L., Carr, L.D., Cebra, D., Cooper, G.E., Cramer, J.G., Cristinziani, M., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M.I., Fischer, H.G., Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Ganz, R., Gaździcki, M., Geist, W., Gładysz, E., Grebieszkow, J., Günther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hümmler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lévai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnár, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Prindle, D.J., Pühlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Röhrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schäfer, E., Schmischke, D., Schmitz, N., Schönfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Ströbele, H., Struck, Chr., Susa, T., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Voloshin, S., Vranić, D., Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Xu, N., Yates, T.A., Zimanyi, J., Zhu, X.-Z., and Zybert, R.
Published: 1999
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19. The NA49 large acceptance hadron detector

Author: Afanasiev, S., Alber, T., Appelshäuser, H., Bächler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, H., Bieser, F., Billmeier, A., Blyth, C.O., Bock, R., Bormann, C., Bracinik, J., Brady, F.P., Brockmann, R., Brun, R., Buncic, P., Caines, H.L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Cyprian, M., Dunn, J., Eckardt, V., Eckhardt, F., Empl, T., Eschke, J., Ferguson, M.I., Fessler, H., Fischer, H.G., Flierl, D., Fodor, Z., Frankenfeld, U., Foka, P., Freund, P., Friese, V., Ftacnik, J., Fuchs, M., Gabler, F., Gal, J., Ganz, R., Gaździcki, M., Gładysz, E., Grebieszkow, J., Günther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hlinka, V., Huang, I., Hümmler, H., Igo, G., Irmscher, D., Ivanov, M., Janik, R., Jacobs, P., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lévai, P., Liebicher, K., Lynen, U., Malakhov, A.I., Margetis, S., Markert, C., Marks, C., Mayes, B., Melkumov, G.L., Mock, A., Molnár, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Pestov, Y., Petridis, A., Pikna, M., Pimpl, W., Pinsky, L., Piper, A., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Pühlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Röhrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Schäfer, E., Schmidt, R., Schmischke, D., Schmitz, N., Schönfelder, S., Semenov, A.Yu., Seyboth, J., Seyboth, P., Seyerlein, J., Sikler, F., Sitar, B., Skrzypczak, E., Squier, G.T.A., Stelzer, H., Stock, R., Strmen, P., Ströbele, H., Struck, C., Susa, T., Szarka, I., Szentpetery, I., Szymański, P., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Vranic, D., Wang, F.Q., Weerasundara, D.D., Wenig, S., Whitten, C., Wieman, H., Wienold, T., Wood, L., Yates, T.A., Zimanyi, J., Zhu, X.-Z., and Zybert, R.
Published: 1999
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20. System size dependence of strangeness production at 158AGeV

Author: Hohne, C., Afanasiev, S.V., Anticic, T., Baatar, B., Barna, D., Bartke, J., Barton, R.A., Behler, M., Betev, L., Bialkowska, H., Billmeier, A., Blume, C., Blyth, C.O., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Brun, R., Buncic, P., Cerny, V., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Filip, P., Fischer, H.G., Fodor, Z., Foka, P., Freund, P., Friese, V., Gal, J., Gazdzicki, M., Georgopoulos, G., Gladysz, E., Hegyi, S., Igo, G., Jones, P.G., Kadija, K., Karev, A., Kolesnikov, V.I., Kollegger, T., Kowalski, M., Kraus, I., Kreps, M., van Leeuwen, M., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, B.W., Melkumov, G.L., Meurer, C., Mischke, A., Mitrovski, M., Molnar, J., Nelson, John M., Palla, G., Panagiotou, A.D., Perl, K., Petridis, A., Pikna, M., Pinsky, Lawrence S., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Roland, C., Roland, G., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Squier, G.T.A., Stock, R., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Trainor, T.A., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wenig, S., Wetzler, A., Whitten, C., Yoo, I.K., Zaranek, J., and Zimanyi, J.
Subjects: Physics, Nuclear and High Energy Physics, Strange quark, Large Hadron Collider, Nuclear Theory, FOS: Physical sciences, Small systems, Strangeness production, Strangeness, Lambda, Nuclear physics, Pion, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Size dependence
Abstract: Strange particle production in A+A interactions at 158 AGeV is studied by the CERN experiment NA49 as a function of system size and collision geometry. Yields of charged kaons, phi and Lambda are measured and compared to those of pions in central C+C, Si+Si and centrality-selected Pb+Pb reactions. An overall increase of relative strangeness production with the size of the system is observed which does not scale with the number of participants. Arguing that rescattering of secondaries plays a minor role in small systems the observed strangeness enhancement can be related to the space-time density of the primary nucleon-nucleon collisions., Comment: 5 pages, 3 figures, Presented at Quark Matter 2002, Nantes, France
Published: 2003

21. Pion interferometry with ultrarelavistic heavy-ion collisions from the NA35 experiment

Author: Bamberger, A., Bangert, D., Bartke, J., Bialkowska, H., Bock, R., Brockmann, R., Chase, S. I., DeMarzo, C., DePalma, M., Derado, I., Eckardt, V., Favuzzi, C., Fent, J., Ferenc, D., Fessler, H., Freund, P., Gazdzicki, M., Gebauer, H. J., Geissler, K., Gladysz, E., Guerra, C., Harris, J. W., Heck, W., Humanic, T. J., Kadija, K., Karabarbounis, A., Keidel, R., Koisiec, J., Kowalski, M., Margetis, S., Nappi, E., Odyniec, G., Paic, G., Panagiotou, A., Petridis, A., Pfennig, J., Posa, F., Pretzl, K. P., Pugh, H. B., Pühlhofer, F., Rai, G., Ranieri, A., Rauch, W., Renfordt, R., Röhrich, D., Runge, K., Sandoval, A., Schall, D., Schmitz, N., Schroeder, L. S., Selvaggi, G., Seyboth, P., Seyerlein, J., Skrzypczak, E., Spinelli, P., Stock, R., Ströbele, H., Thomas, A., Tincknell, M., Teitelbaum, L., Vesztergombi, G., Vranic, D., Wenig, S., and NA35 Collaboration
Published: 1988
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22. Energy dependence of fluctuations in central Pb+Pb collisions from NA49 at the CERN SPS

Author: Rybczynski, M., Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I.K., and Zimanyi, J.
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, FOS: Physical sciences, Collision, Critical point (mathematics), Nuclear physics, Transverse momentum, Nuclear Physics - Experiment, Multiplicity (chemistry), Nuclear Experiment (nucl-ex), Nuclear Experiment, Multiplicity distribution
Abstract: The latest NA49 results on fluctuations of multiplicity and average transverse-momentum analyzed on an event-by-event basis are presented for central Pb+Pb interactions over the whole SPS energy range (20A - 158A GeV). The scaled variance of the multiplicity distribution decreases with collision energy whereas the $\Phi_{p_{T}}$ measure of $$ fluctuations is small and independent of collision energy. Thus in central Pb+Pb collisions these fluctuations do not show an indication of the critical point of strongly interacting matter., Comment: 5 pages, 4 figures, talk presented at Quark Matter 2008 Reference added and some typos corrected
Published: 2012

23. Three-dimensional two-pion source image from Pb +Pb collisions at √sNN = 17.3 GeV : New constraints for source breakup dynamics

Author: Alt, C., Antičić, Tome, Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bunčić, Predrag, Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kniege, S., Kolesnikov, V. I., Korus, R., Kowalski, M., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mitrovski, M., Molnar, J., Mrowczynski, St., Nikolić, Vedran, Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, Tatjana, Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, Danilo, Wlodarczyk, Z., Wojtaszek, A., Yoo, I. K., Alexanders, J. M., Danielewicz, P., Kisiel, A., and Pratt, S.
Subjects: Physics, Nuclear Theory, Physics::Accelerator Physics, CERN, SPS, NA49, source imaging, pions, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Source imaging methodology is used to provide a three-dimensional two-pion source function for midrapidity pion pairs with pT < 70 MeV/c in central (0–7%) Pb + Pb collisions at √sNN = 17.3 GeV. Prominent non-Gaussian tails are observed in the pion pair transverse momentum (outward) and in the beam (longitudinal) directions. Model calculations reproduce them with the assumption of Bjorken longitudinal boost invariance and transverse flow blast-wave dynamics ; they also yield a proper time for breakup and emission duration for the pion source.
Published: 2010

24. Search for the QCD critical point at SPS energies

Author: Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Mrowczynski, St., Palla, G., Panagiotou, A.D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wlodarczyk, Z., Wojtaszek-Szwarc, A., Yoo, I.K., Abgrall, N., Aduszkiewicz, A., Andrieu, B., Antoniou, N., Argyriades, J., Asryan, A.G., Blondel, A., Blumer, J., Boldizsar, L., Bravar, A., Brzychczyk, J., Bubak, A., Bunyatov, S.A., Choi, K.-U., Cleymans, J., Derkach, D.A., Diakonos, F., Dominik, W., Dumarchez, J., Engel, R., Ereditato, A., Feofilov, G.A., Ferrero, A., Golubeva, M., Grzeszczuk, A., Guber, F., Hasegawa, T., Haungs, A., Igolkin, S., Ivanov, A.S., Ivashkin, A., Katrynska, N., Kielczewska, D., Kisiel, J., Kobayashi, T., Kolev, D., Kolevatov, R.S., Kondratiev, V.P., Kowalski, S., Kurepin, A., Lyubushkin, V.V., Majka, Z., Marchionni, A., Marcinek, A., Maris, I., Matveev, V., Meregaglia, A., Messina, M., Mijakowski, P., Montaruli, T., Murphy, S., Nakadaira, T., Naumenko, P.A., Nikolic, V., Nishikawa, K., Palczewski, T., Planeta, R., Popov, B.A., Posiadala, M., Przewlocki, P., Rauch, W., Ravonel, M., Rohrich, D., Rondio, E., Rossi, B., Roth, M., Rubbia, A., Sadovsky, A., Sakashita, K., Sekiguchi, T., Shibata, M., Sissakian, A.N., Sorin, A.S., Staszel, P., Stepaniak, J., Stroebele, H., Tada, M., Taranenko, A., Tsenov, R., Ulrich, R., Unger, M., Vechernin, V.V., and Zipper, W.
Subjects: Quantum chromodynamics, Physics, Particle physics, High Energy Physics::Lattice, Lattice field theory, High Energy Physics::Phenomenology, Nuclear Theory, High Energy Physics - Experiment, Critical point (thermodynamics), Quantum electrodynamics, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract: Lattice QCD calculations locate the QCD critical point at energies accessible at the CERN Super Proton Synchrotron (SPS). We present average transverse momentum and multiplicity fluctuations, as well as baryon and anti-baryon transverse mass spectra which are expected to be sensitive to effects of the critical point. The future CP search strategy of the NA61/SHINE experiment at the SPS is also discussed., Comment: EPS HEP09 proceedings, July 16-22 2009, Krakow, Poland
Published: 2009

25. System-size dependence of $\Lambda$ and $\Xi$ production in nucleus-nucleus collisions at 40A and 158A GeV measured at the CERN Super Proton Synchrotron

Author: Anticic, T., Baatar, B., Barna, D., Bartke, J., Beck, H., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Book, J., Botje, M., Bracinik, J., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kresan, D., Kolesnikov, V.I., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Meurer, C., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Utvic, M., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wlodarczyk, Z., Wojtaszek, A., and Yoo, I.K.
Subjects: FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Results on Lambda, Anti-lambda, and Xi- production in centrality selected Pb+Pb reactions at 40A and 158A GeV and in near-central C+C and Si+Si reactions at 158A GeV are presented. Transverse mass spectra, rapidity spectra, and multiplicities in dependence of the system size are discussed. Comparisons to transport models (UrQMD2.3 and HSD) and to the core-corona approach are performed. While Lambda and Anti-lambda production can be described by transport models reasonably well, these models do not agree with the Xi- measurements. On the other hand, the core-corona picture fits very well the system-size dependence of Lambda and Xi-, while it agrees less well with the Anti-lambda data., 13 pages, 12 figures. Revised version as accepted by Phys. Rev. C
Published: 2009

26. Energy dependence of particle ratio fluctuations in central Pb+Pb collisions from sqrt(sNN)=6.3 to 17.3 GeV

Author: Alt, C., Antičić, Tome, Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Bunčić, Predrag, Cerny, V., Christakoglou, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Kresan, D., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, S., Nikolić, Vedran, Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Pikna, M., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Stefanek, G., Stock, R., Strobele, H., Šuša, Tatjana, Szentpetery, I., Sziklai, J., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, Danilo, Wetzler, A., Wlodarczyk, Z., and Yoo, I. K.
Subjects: NA49, SPS, fluctuation, particle ratio, energy dependence, Physics, Nuclear Experiment
Abstract: We present measurements of the energy dependence of event-by-event fluctuations in the K/pi and (p+ anti-p)/pi multiplicity ratios in heavy-ion collisions at the CERN SPS. The particle ratio fluctuations were obtained for central Pb+Pb collisions at five collision energies, sqrt(sNN), between 6.3 and 17.3 GeV. After accounting for the effects of finite-number statistics and detector resolution, we extract the strength of nonstatistical fluctuations at each energy. For the K/pi ratio, larger fluctuations than expected for independent particle production are found at all collision energies. The fluctuations in the (p+anti-p)/pi ratio are smaller than expectations from independent particle production, indicating correlated pion and proton production from resonance decays. For both ratios, the deviation from purely statistical fluctuations shows an increase toward lower collision energies. The results are compared to transport model calculations, which fail to describe the energy dependence of the K/pi ratio fluctuations.
Published: 2009

27. Energy dependence of transverse momentum fluctuations in Pb+Pb collisions at the CERN Super Proton Synchrotron (SPS) at 20A to 158A GeV

Author: Antičić, Tome, Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bunčić, Predrag, Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kikola, D, Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, S., Nikolić, Vedran, Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, Tatjana, Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, Danilo, Wlodarczyk, Z., Wojtaszek, A., and Yoo, I. K.
Subjects: NA49, SPS, QGP, fluctuation, transverse momenta, Physics, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Particle Physics - Experiment
Abstract: Results are presented on event-by-event fluctuations of transverse momenta $p_T$ in central Pb+Pb interactions at 20$A$, 30$A$, 40$A$, 80$A$, and 158$A$ GeV. The analysis was performed for charged particles at forward center-of-mass rapidity ($1.1 < y^{*}_�� < 2.6$). Three fluctuation measures were studied: the distribution of average transverse momentum - $M(p_T)$ - in the event, the $��_{p_{T}}$ fluctuation measure and two-particle transverse momentum correlations. Fluctuations of $p_T$ are small and show no significant energy dependence in the energy range of the CERN Super Proton Synchrotron. Results are compared with QCD-inspired predictions for the critical point, and with the UrQMD model. Transverse momentum fluctuations, similar to multiplicity fluctuations, do not show the increase expected for freeze-out near the critical point of QCD., Published in Phys. Rev. C
Published: 2008

28. Energy dependence of phi meson production in central Pb+Pb collisions sqrt(sNN) = 6 to 17 GeV

Author: Alt, C., Antičić, Tome, Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Bunčić, Predrag, Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V. I., Kollegger, T., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Kresan, D., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nikolić, V., Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, Tatjana, Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, Danilo, Wetzler, A., Wlodarczyk, Z., Yoo, I. K., and Zimanyi, J.
Subjects: CERN, SPS, QGP, Pb+Pb, strange particle, phi, energy dependence, Physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Phi meson production is studied by the NA49 Collaboration in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV beam energy. The data are compared with measurements at lower and higher energies and with microscopic and thermal models. The energy dependence of yields and spectral distributions is compatible with the assumption that partonic degrees of freedom set in at low SPS energies.
Published: 2008

29. Energy dependence of Lambda and Xi production in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV measured at the CERN Super Proton Synchrotron

Author: Alt, C., Antičić, Tome, Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Bunčić, Predrag, Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kikola, D, Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Meurer, C., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nikolić, Vedran, Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, Danilo, Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimanyi, J.
Subjects: CERN, SPS, QGP, Pb+Pb, strange particle, Lambda, Xi, energy dependence, Physics, Nuclear Theory, Nuclear Experiment
Abstract: Results on Lambda, anti-Lambda, Xi-, and antiXi+ production in central Pb+Pb reactions at 20A, 30A, 40A, 80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) and statistical hadron gas models are shown. Although the latter provide a reasonable description of all particle yields, the first class of models fails to match the Xi- and anti-Xi+ multiplicities.
Published: 2008

30. Energy dependence of multiplicity fluctuations in heavy ion collisions at 20A to 158A GeV

Author: Alt, C., Antičić, Tome, Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Bunčić, Predrag, Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nikolić, Vedran, Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, Tatjana, Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, Danilo, Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimanyi, J.
Subjects: Physics, NA49, CERN, SPS, QGP, fluctuations, multiplicity, energy dependence, Nuclear Experiment
Abstract: Multiplicity fluctuations of positively, negatively, and all charged hadrons in the forward hemisphere were studied in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV. The multiplicity distributions and their scaled variances omega are presented as functions of their dependence on collision energy as well as on rapidity and transverse momentum. The distributions have bell-like shapes and their scaled variances are in the range from 0.8 to 1.2 without any significant structure in their energy dependence. No indication of the critical point in fluctuations are observed. The string-hadronic ultrarelativistic quantum molecular dynamics (UrQMD) model significantly overpredicts the mean, but it approximately reproduces the scaled variance of the multiplicity distributions. The predictions of the statistical hadron-resonance gas model obtained within the grand-canonical and canonical ensembles disagree with the measured scaled variances. The narrower than Poissonian multiplicity fluctuations measured in numerous cases may be explained by the impact of conservation laws on fluctuations in relativistic systems.
Published: 2008

31. Three-Dimensional two-pion source image from Pb+Pb Collisions at Sqrts_NN=17.3 GeV: New constraints for source breakup dynamics

Author: Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I.K., Zimanyi, J., Alexander, J.M., Danielewicz, P., Kisiel, A., and Pratt, S.
Subjects: Nuclear Theory, FOS: Physical sciences, Nuclear Physics - Experiment, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Source imaging methodology is used to provide a three-dimensional two-pion source function for mid-rapidity pion pairs with $p_T, Six pages 4 figs. Submitted for publication
Published: 2008

32. Energy dependence of particle ratio fluctuations in central Pb+Pb collisions from $\sqrt{s_{_{NN}}} =$~6.3 to 17.3 GeV

Author: Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Kresan, D., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Pikna, M., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Stefanek, G., Stock, R., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Yoo, I.K., and Zimanyi, J.
Subjects: FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: We present measurements of the energy dependence of event-by-event fluctuations in the K/pi and (p + \bar{p})/pi multiplicity ratios in heavy ion collisions at the CERN SPS. The particle ratio fluctuations were obtained for central Pb+Pb collisions at five collision energies, \sqrt{s_{_{NN}}}, between 6.3 and 17.3 GeV. After accounting for the effects of finite-number statistics and detector resolution, we extract the strength of non-statistical fluctuations at each energy. For the K/pi ratio, larger fluctuations than expected for independent particle production are found at all collision energies. The fluctuations in the (p + \bar{p})/pi ratio are smaller than expectations from independent particle production, indicating correlated pion and proton production from resonance decays. For both ratios, the deviation from purely statistical fluctuations shows an increase towards lower collision energies. The results are compared to transport model calculations, which fail to describe the energy dependence of the K/pi ratio fluctuations., Comment: 11 pages, 10 figures, update to published version
Published: 2008

33. Energy dependence of $\Lambda$ and $\Xi$ production in central Pb+Pb collisions at 20A,30A,40A,80A, and 158A GeV measured at the CERN Super Proton

Author: Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Meurer, C., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Richard, A., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I.K., and Zimanyi, J.
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Results on $\Lambda$, $\bar{\Lambda}}$, $\Xi^{-}$, and $\bar{\Xi}^{+}$ production in central Pb+Pb reactions at 20A, 30A, 40A, 80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) and statistical hadron gas models are shown. While the latter provide a reasonable description of all particle yields, the first class of models fails to match the $\Xi^{-}$, and $\bar{\Xi}^{+}$ multiplicities., Comment: 16 pages, 16 figures. Finally published version after editorial revision
Published: 2008

34. High transverse momentum hadron spectra at sqrt(sNN)=17.3 GeV in Pb+Pb and p+p collisions

Author: Alt, C., Antičić, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D, Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, S., Nikolić, V., Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimanyi, J.
Subjects: Physics, Nuclear Experiment, NA49, SPS, Pb+Pb, p+p, high transverse momentum, hadron
Abstract: Transverse momentum spectra up to 4.5 GeV/c around midrapidity of pi+-, p, anti-p, and K+- in Pb+Pb reactions were measured at sqrt(sNN)=17.3 GeV by the CERN-NA49 experiment. The nuclear modification factors RAA for pi+- and RCP for pi+-, p, anti-p, K+- were extracted and compared with results obtained at the BNL Relativistic Heavy Ion Collider (RHIC) at sqrt(sNN)=200 GeV. The modification factor RAA shows a rapid increase with transverse momentum in the covered region. This indicates that the Cronin effect is the dominating effect in our energy range. The modification factor RCP, in which the contribution of the Cronin effect is reduced, shows a saturation well below unity in the pi+- channel. The extracted RCP values follow the 200 GeV RHIC results closely in the available transverse momentum range, except for pi+- above 2.5 GeV/c transverse momentum. There the measured suppression is smaller than that observed at RHIC.
Published: 2008

35. Pion and kaon production in central Pb plus Pb collisions at 20A and 30A GeV: Evidence for the onset of deconfinement

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gal, J. Gazdzicki, M. G. and Genchev, V. Gladysz, E. Grebieszkow, K. Hegyi, S. and Hoehne, C. Kadija, K. Karev, A. Kikola, D. Kliemant, M. and Kniege, S. Kolesnikov, V. I. Kollegger, T. Kornas, E. and Kowalski, M. Kraus, I. Kreps, M. Laszlo, A. Lacey, R. van Leeuwen, M. Levai, P. Litov, L. Lungwitz, B. and Makariev, M. Malakhov, A. I. Mateev, M. Melkumov, G. L. and Mischke, A. Mitrovski, M. Molnar, J. Mrowczynski, St and Nicolic, V. Palla, G. Panagiotou, A. D. Panayotov, D. and Petridis, A. Peryt, W. Pikna, M. Pluta, J. Prindle, D. and Uhlhofer, F. P. Renfordt, R. Roland, C. Roland, G. and Rybczynski, M. Rybicki, A. Sandoval, A. Schmitz, N. and Schuster, T. Seyboth, P. Sikler, F. Sitar, B. and Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. and Strabel, C. Obele, H. Str Susa, T. Szentpetery, I. and Sziklai, J. Szuba, M. Szymanski, P. Trubnikov, V. Varga, D. Vassiliou, M. Veres, G. I. Vesztergombi, G. Vranic, D. Wetzler, A. Wlodarczyk, Z. Yoo, I. K. Zimanyi, J. and NA49 Collaboration
Subjects: Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Results on charged pion and kaon production in central Pb+Pb collisions at 20A and 30A GeV are presented and compared to data at lower and higher energies. Around 30A GeV a rapid change of the energy dependence for the yields of pions and kaons as well as for the shape of the transverse mass spectra is observed. The change is compatible with the prediction that the threshold for production of a state of deconfined matter at the early stage of the collisions is located at low CERN Super Proton Synchroton energies.
Published: 2008

36. High transverse momentum hadron spectra at root s(NN)=17.3 GeV in Pb+Pb and p+p collisions

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gal, J. Gazdzicki, M. and Genchev, V. Georgopoulos, G. Gladysz, E. Grebieszkow, K. and Hegyi, S. Hoehne, C. Kadija, K. Karev, A. Kikola, D. and Kliemant, M. Kniege, S. Kolesnikov, V. I. Kornas, E. and Korus, R. Kowalski, M. Kraus, I. Kreps, M. Laszlo, A. and Lacey, R. van Leeuwen, M. Levai, P. Litov, L. and Lungwitz, B. Makariev, M. Malakhov, A. I. Mateev, M. and Melkumov, G. L. Mischke, A. Mitrovski, M. Molnar, J. and Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A. D. and Panayotov, D. Petridis, A. Peryt, W. Pikna, M. Pluta, J. and Prindle, D. Puehlhofer, F. Renfordt, R. Roland, C. and Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. and Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. and Strabel, C. Stroeble, H. Susa, T. Szentpetery, I. and Sziklai, J. Szuba, M. Szymanski, P. Trubnikov, V. Varga, D. Vassiliou, M. Veres, G. I. Vesztergombi, G. Vranic, D. Wetzler, A. Wlodarczyk, Z. Wojtaszek, A. Yoo, I. K. and Zimanyi, J. NA49 Collaboration
Subjects: High Energy Physics::Experiment, Nuclear Experiment
Abstract: Transverse momentum spectra up to 4.5 GeV/c around midrapidity of pi(+/-), p, (p) over bar, and K-+/- in Pb+Pb reactions were measured at root s(NN) = 17.3 GeV by the CERN-NA49 experiment. The nuclear modification factors R-AA for pi(+/-) and R-CP for pi(+/-), p, (p) over bar, K-+/- were extracted and compared with results obtained at the BNL Relativistic Heavy Ion Collider (RHIC) at root s(NN) = 200 GeV. The modification factor R-AA shows a rapid increase with transverse momentum in the covered region. This indicates that the Cronin effect is the dominating effect in our energy range. The modification factor R-CP, in which the contribution of the Cronin effect is reduced, shows a saturation well below unity in the pi(+/-) channel. The extracted R-CP values follow the 200 GeV RHIC results closely in the available transverse momentum range, except for pi(+/-) above 2.5 GeV/c transverse momentum. There the measured suppression is smaller than that observed at RHIC.
Published: 2008

37. Bose-Einstein correlations of pi(-)pi(-) pairs in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gal, J. Gazdzicki, M. and Genchev, V. Georgopoulos, G. Gladysz, E. Grebieszkow, K. and Hegyi, S. Hoehne, C. Kadija, K. Karev, A. Kikola, D. and Kliemant, M. Kniege, S. Kolesnikov, V. I. Kornas, E. and Korus, R. Kowalski, M. Kraus, I. Kreps, M. Laszlo, A. and Lacey, R. van Leeuwen, M. Levai, P. Litov, L. and Lungwitz, B. Makariev, M. Malakhov, A. I. Mateev, M. and Melkumov, G. L. Mischke, A. Mitrovski, M. Molnar, J. and Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A. D. and Panayotov, D. Petridis, A. Peryt, W. Pikna, M. Pluta, J. and Prindle, D. Puehlhofer, F. Renfordt, R. Roland, C. and Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. and Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. and Strabel, C. Stroebele, H. Susa, T. Szentpetery, I. and Sziklai, J. Szuba, M. Szymanski, P. Trubnikov, V. Varga, D. Vassiliou, M. Veres, G. I. Vesztergombi, G. Vranic, D. Wetzler, A. Wlodarczyk, Z. Wojtaszek, A. Yoo, I. K. and Zimanyi, J.
Subjects: Nuclear Experiment
Abstract: Measurements of Bose-Einstein correlations of pi(-)pi(-) pairs in central Pb+Pb collisions were performed with the NA49 detector at the CERN Super Proton Synchroton for beam energies of 20A,30A,40A,80A, and 158A GeV. Correlation functions were measured in the longitudinally comoving “out-side-long” reference frame as a function of rapidity and transverse momentum in the forward hemisphere of the reaction. Radius and correlation strength parameters were obtained from fits of a Gaussian parametrization. The results show a decrease of the radius parameters with increasing transverse-momentum characteristic of strong radial flow in the pion source. No striking dependence on pion-pair rapidity or beam energy is observed. Static and dynamic properties of the pion source are obtained from simultaneous fits with a blast-wave model to radius parameters and midrapidity transverse-momentum spectra. Predictions of hydrodynamic and microscopic models of Pb+Pb collisions are discussed.
Published: 2008

38. Energy dependence of Lambda and Xi production in central Pb plus Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV measured at the CERN Super Proton Synchrotron

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gal, J. Gazdzicki, M. and Genchev, V. Gladysz, E. Grebieszkow, K. Hegyi, S. and Hoehne, C. Kadija, K. Karev, A. Kikola, D. Kliemant, M. and Kniege, S. Kolesnikov, V. I. Kornas, E. Kowalski, M. and Kraus, I. Kreps, M. Laszlo, A. Lacey, R. van Leeuwen, M. and Levai, P. Litov, L. Lungwitz, B. Makariev, M. and Malakhov, A. I. Mateev, M. Melkumov, G. L. Meurer, C. and Mischke, A. Mitrovski, M. Molnar, J. Mrowczynski, St. and Nicolic, V. Palla, G. Panagiotou, A. D. Panayotov, D. and Petridis, A. Peryt, W. Pikna, M. Pluta, J. Prindle, D. and Puehlhofer, F. Renfordt, R. Richard, A. Roland, C. and Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. and Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. and Strabel, C. Stroebele, H. Susa, T. Szentpetery, I. and Sziklai, J. Szuba, M. Szymanski, P. Trubnikov, V. Utvic, M. Varga, D. Vassiliou, M. Veres, G. I. Vesztergombi, G. and Vranic, D. Wetzler, A. Wlodarczyk, Z. Wojtaszek, A. and Yoo, I. K. Zimanyi, J. NA49 Collaboration
Subjects: Nuclear Theory, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Results on Lambda, (Lambda) over bar, Xi(-), and (Xi) over bar (+) production in central Pb+Pb reactions at 20A, 30A, 40A, 80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) and statistical hadron gas models are shown. Although the latter provide a reasonable description of all particle yields, the first class of models fails to match the Xi(-) and (Xi) over bar (+) multiplicities.
Published: 2008

39. Energy dependence of multiplicity fluctuations in heavy ion collisions at 20A to 158A GeV

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gal, J. Gazdzicki, M. and Genchev, V. Georgopoulos, G. Gladysz, E. Grebieszkow, K. and Hegyi, S. Hoehne, C. Kadija, K. Karev, A. Kikola, D. and Kliemant, M. Kniege, S. Kolesnikov, V. I. Kornas, E. and Korus, R. Kowalski, M. Kraus, I. Kreps, M. Laszlo, A. and Lacey, R. van Leeuwen, M. Levai, P. Litov, L. and Lungwitz, B. Makariev, M. Malakhov, A. I. Mateev, M. and Melkumov, G. L. Mischke, A. Mitrovski, M. Molnar, J. and Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A. D. and Panayotov, D. Petridis, A. Peryt, W. Pikna, M. Pluta, J. and Prindle, D. Puehlhofer, F. Renfordt, R. Roland, C. and Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. and Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. and Strabel, C. Stroebele, H. Susa, T. Szentpetery, I. and Sziklai, J. Szuba, M. Szymanski, P. Trubnikov, V. Utvic, M. Varga, D. Vassiliou, M. Veres, G. I. Vesztergombi, G. and Vranic, D. Wetzler, A. Wlodarczyk, Z. Wojtaszek, A. and Yoo, I. K. Zimanyi, J.
Subjects: Nuclear Experiment
Abstract: Multiplicity fluctuations of positively, negatively, and all charged hadrons in the forward hemisphere were studied in central Pb+ Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV. The multiplicity distributions and their scaled variances. are presented as functions of their dependence on collision energy as well as on rapidity and transverse momentum. The distributions have bell-like shapes and their scaled variances are in the range from 0.8 to 1.2 without any significant structure in their energy dependence. No indication of the critical point in fluctuations are observed. The string-hadronic ultrarelativistic quantum molecular dynamics (UrQMD) model significantly overpredicts the mean, but it approximately reproduces the scaled variance of the multiplicity distributions. The predictions of the statistical hadron-resonance gas model obtained within the grand-canonical and canonical ensembles disagree with the measured scaled variances. The narrower than Poissonian multiplicity fluctuations measured in numerous cases may be explained by the impact of conservation laws on fluctuations in relativistic systems.
Published: 2008

40. Pion and kaon production in central Pb plus Pb collisions at 20A and 30A GeV: evidence for the onset of deconfinement

Author: Antičić, Tome, Alt, C., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, Krešo, Karev, A., Kikola, D, Kliemant, M., Kniege, S., Kolesnikov, V. I., Kollegger, T., Kornas, E., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, S., Nikolić, V., Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, Tatjana, Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimanyi, J.
Subjects: CERN, NA49, Pb+Pb, pion, kaon, deconfinement, Physics, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Results on charged pion and kaon production in central Pb+Pb collisions at 20A and 30A GeV are presented and compared to data at lower and higher energies. Around 30A GeV a rapid change of the energy dependence for the yields of pions and kaons as well as for the shape of the transverse mass spectra is observed. The change is compatible with the prediction that the threshold for production of a state of deconfined matter at the early stage of the collisions is located at low CERN Super Proton Synchroton energies.
Published: 2008

41. Energy dependence of multiplicity fluctuations in heavy ion collisions at 20A to 158A GeV

Author: Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, Helena, Blume, Christoph, Boimska, B., Botje, Michiel, Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Zoltan, Foka, P., Friese, Volker, Gal, J., Gazdzicki, Marek, Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, Roy A., van Leeuwen, M., Levai, P., Litov, Leandar, Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, Apostolos D., Panayotov, D., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, Gunther, Rybczynski, M., Rybicki, A., Sandoval, Andres, Schmitz, Norbert, Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, Grzegorz, Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Utvic, M., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., and Yoo, I.K.
Subjects: Nuclear Physics - Experiment, Nuclear Experiment
Abstract: Multiplicity fluctuations of positively, negatively and all charged hadrons in the forward hemisphere were studied in central Pb+Pb collisions at 20A, 30A, 40A, 80A and 158A GeV. The multiplicity distributions and their scaled variances $\omega$ are presented in dependence of collision energy as well as of rapidity and transverse momentum. The distributions have bell-like shape and their scaled variances are in the range from 0.8 to 1.2 without any significant structure in their energy dependence. No indication of the critical point fluctuations are observed. The string-hadronic model UrQMD significantly overpredicts the mean, but approximately reproduces the scaled variance of the multiplicity distributions. The predictions of the statistical hadron-resonance gas model obtained within the grand-canonical and canonical ensembles disagree with the measured scaled variances. The narrower than Poissonian multiplicity fluctuations measured in numerous cases may be explained by the impact of conservation laws on fluctuations in relativistic gases. Multiplicity fluctuations of positively, negatively and all charged hadrons in the forward hemisphere were studied in central Pb+Pb collisions at 20A, 30A, 40A, 80A and 158A GeV. The multiplicity distributions and their scaled variances are presented in dependence of collision energy as well as of rapidity and transverse momentum. The distributions have bell-like shape and their scaled variances are in the range from 0.8 to 1.2 without any significant structure in their energy dependence. No indication of the critical point in fluctuations are observed. The string-hadronic model UrQMD significantly overpredicts the mean, but approximately reproduces the scaled variance of the multiplicity distributions. The predictions of the statistical hadron-resonance gas model obtained within the grand-canonical and canonical ensembles disagree with the measured scaled variances. The narrower than Poissonian multiplicity fluctuations measured in numerous cases may be explained by the impact of conservation laws on fluctuations in relativistic systems.
Published: 2007

42. Bose-Einstein correlations of $\pi^{-}\pi^{-}$ pairs in central Pb+Pb collisions at 20A,30A,40A,80A, and 158A GeV

Author: Alt, C., Antičić, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D, Kliemant, M., Kniege, S., Kolesnikov, V. I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A. I., Mateev, M., Melkumov, G. L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, S., Nikolić, V., Palla, G., Panagiotou, A. D., Panayotov, D., Petridis, A., Peryt, W, Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Šuša, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G. I., Vesztergombi, G., Vranić, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I. K., and Zimanyi, J.
Subjects: Physics, Nuclear Theory, Nuclear Physics - Experiment, SPS, pion, bose-einstein, correlations, QGP, Pb+Pb, Nuclear Experiment
Abstract: Measurements of Bose-Einstein correlations of pi-pi- pairs in central Pb+Pb collisions were performed with the NA49 detector at the CERN Super Proton Synchroton for beam energies of 20A, 30A, 40A, 80A, and 158A GeV. Correlation functions were measured in the longitudinally co-moving ``out-side-long'' reference frame as a function of rapidity and transverse momentum in the forward hemisphere of the reaction. Radius and correlation strength parameters were obtained from fits of a Gaussian parametrization. The results show a decrease of the radius parameters with increasing transverse momentum characteristic of strong radial flow in the pion source. No striking dependence on pion-pair rapidity or beam energy is observed. Static and dynamic properties of the pion source are obtained from simultaneous fits with a blast-wave model to radius parameters and midrapidity transverse momentum spectra. Predictions of hydrodynamic and microscopic models of Pb+Pb collisions are discussed.
Published: 2007

43. Elliptic flow of Lambda hyperons in Pb+Pb collisions at 158A GeV

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gal, J. Gazdzicki, M. and Georgopoulos, G. Gladysz, E. Grebieszkow, K. Hegyi, S. and Hoehne, C. Kadija, K. Karev, A. Kliemant, M. Kniege, S. and Kolesnikov, V. I. Kornas, E. Korus, R. Kowalski, M. and Kraus, I. Kreps, M. Lacey, R. Laszlo, A. van Leeuwen, M. and Levai, P. Litov, L. Lungwitz, B. Makariev, M. and Malakhov, A. I. Mateev, M. Melkumov, G. L. Mischke, A. and Mitrovski, M. Molnar, J. Mrowczynski, St. Nicolic, V. and Palla, G. Panagiotou, A. D. Panayotov, D. Petridis, A. and Pikna, M. Prindle, D. Puehlhofer, F. Renfordt, R. and Roland, C. Roland, G. Rybczynski, M. Rybicki, A. and Sandoval, A. Schmitz, N. Schuster, T. Seyboth, P. and Sikler, F. Sitar, B. Skrzypczak, E. Stefanek, G. Stock, R. Strabel, C. Stroebele, H. Susa, T. Szentpetery, I. and Sziklai, J. Szymanski, P. Trubnikov, V. Varga, D. and Vassiliou, M. Veres, G. I. Vesztergombi, G. Vranic, D. and Wetzler, A. Wlodarczyk, Z. Wojtaszek, A. Yoo, I. K. and Zimanyi, J. NA49 Collaboration
Subjects: Nuclear Theory, Nuclear Experiment
Abstract: The elliptic flow of Lambda hyperons has been measured by the NA49 Collaboration at the CERN-SPS in semicentral Pb+Pb collisions at 158A GeV. The standard method of correlating particles with the event plane was used. Measurements of v(2) near midrapidity are reported as a function of rapidity, centrality and transverse momentum. Elliptic flow of Lambda particles increases both with the impact parameter and with the transverse momentum. It is compared with v(2) for pions and protons as well as with model calculations. The observation of significant elliptic flow and its mass dependence suggest strong collective behavior of the matter produced in collisions of heavy nuclei already at the SPS. Scaling properties of elliptic flow of different particle species have been tested at 158A GeV. The limited p(T) range of the data does not allow for a decisive test of the coalescence model.
Published: 2007

44. Centrality and system size dependence of multiplicity fluctuations in nuclear collisions at 158A GeV

Author: Alt, C. Anticic, T. Baatar, B. Barna, D. Bartke, J. and Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. and Bracinik, J. Bramm, R. Buncic, P. Cerny, V. and Christakoglou, P. Chung, P. Chvala, O. Cramer, J. G. and Csato, P. Dinkelaker, P. Eckardt, V. Flierl, D. Fodor, Z. Foka, P. Friese, V. Gl, J. Gazdzicki, M. Genchev, V. Georgopoulos, G. Gladysz, E. Grebieszkow, K. Hegyi, S. Hoehne, C. Kadija, K. Karev, A. Kikola, D. and Kliemant, M. Kniege, S. Kolesnikov, V. I. Kornas, E. and Korus, R. Kowalski, M. Kraus, I. Kreps, M. Laszlo, A. and Lacey, R. van Leeuwen, M. Levai, P. Litov, L. and Lungwitz, B. Makariev, M. Malakhov, A. I. Mateev, M. and Melkumov, G. L. Mischke, A. Mitrovski, M. Molnar, J. and Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A. D. and Panayotov, D. Peryt, W. Petridis, A. Pikna, M. Pluta, J. and Prindle, D. Puehlhofer, F. Renfordt, R. Roland, C. and Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. and Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. and Strabel, C. Stroebele, H. Susa, T. Szentpetery, I. and Sziklai, J. Szuba, M. Szymanski, P. Trubnikov, V. Varga, D. Vassiliou, M. Veres, G. I. Vesztergombi, G. Vranic, D. Wetzler, A. Wlodarczyk, Z. Wojtaszek, A. Yoo, I. K. and Zimnyi, J. NA49 Collaboration
Subjects: Nuclear Experiment
Abstract: The centrality and system size dependence of multiplicity fluctuations of charged particles produced in nuclear collisions at 158A GeV was studied by the NA49 Collaboration. Centrality selected Pb+Pb collisions, semicentral C+C and Si+Si collisions as well as inelastic p+p interactions were analyzed. The number of projectile participants determined on an event-by-event basis was used to characterize the collision centrality. The scaled variance of the multiplicity distribution obtained in the forward rapidity region (1.1 < y(c.m.)< 2.6) shows a significant increase toward peripheral collisions. The results are similar for negatively and positively charged particles and about 50% larger for all charged particles. String-hadronic models of nuclear reactions without the fusion process do not reproduce the rise of fluctuations from central toward peripheral collisions. The measured centrality dependence can be reproduced in superposition models with the assumption of contributions from target participants to particle production in the forward hemisphere or in string models with fusion.
Published: 2007

45. Pion and kaon production in central Pb+Pb collisions at 20A and 30A GeV: Evidence for the onset of deconfinement

Author: Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kollegger, T., Kornas, E., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Yoo, I.K., and Zimanyi, J.
Subjects: Nuclear Theory, FOS: Physical sciences, Nuclear Physics - Experiment, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Results on charged pion and kaon production in central Pb+Pb collisions at 20A and 30A GeV are presented and compared to data at lower and higher energies. A rapid change of the energy dependence is observed around 30A GeV for the yields of pions and kaons as well as for the shape of the transverse mass spectra. The change is compatible with the prediction that the threshold for production of a state of deconfined matter at the early stage of the collisions is located at low SPS energies., Comment: 12 pages, 8 figures
Published: 2007
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46. Rapidity and energy dependence of the electric charge correlations in A+A collisions at the SPS energies

Author: Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I.K., and Zimanyi, J.
Subjects: FOS: Physical sciences, Nuclear Physics - Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract: Results from electric charge correlations studied with the Balance Function method in A+A collisions from 20\emph{A} to 158\emph{A} GeV are presented in two different rapidity intervals: In the mid-rapidity region we observe a decrease of the width of the Balance Function distribution with increasing centrality of the collision, whereas this effect vanishes in the forward rapidity region. Results from the energy dependence study in central Pb+Pb collisions show that the narrowing of the Balance Function expressed by the normalised width parameter \textit{W} increases with energy towards the highest SPS and RHIC energies. Finally we compare our experimental data points with predictions of several models. The hadronic string models UrQMD and HIJING do not reproduce the observed narrowing of the Balance Function. However, AMPT which contains a quark-parton transport phase before hadronization can reproduce the narrowing of the BF's width with centrality. This confirms the proposed sensitivity of the Balance Function analysis to the time of hadronization., Comment: Submitted in Phys. Rev. C
Published: 2007
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47. Energy, Rapidity and Transverse Momentum Dependence of Multiplicity Fluctuations in Heavy Ion Collisions at CERN SPS

Author: Lungwitz, Benjamin, Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Wojtaszek, A., Yoo, I.K., and Zimanyi, J.
Subjects: FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment, Nuclear Physics
Abstract: Multiplicity fluctuations in the forward hemisphere were studied for positively, negatively and all charged hadrons produced in central Pb+Pb collisions at 20A, 30A, 40A, 80A and 158A GeV. The multiplicity distributions and their scaled variances are presented as a function of collision energy, rapidity and transverse momentum. The distributions have a bell-like shape and the scaled variance changes monotonously with energy in the range from 0.8 to 1.2. No indication of the critical point is observed. The string-hadronic model UrQMD reproduces results on the scaled variance. The predictions of the hadron-resonance gas model obtained within the grand-canonical and canonical ensembles for the scaled variance disagree with the data., Comment: presented at Critical Point and Onset of Deconfinement, 4th International Workshop, July 9-13 2007, GSI Darmstadt, Germany, updated version including referee comments
Published: 2007
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48. High p_T Spectra of Identified Particles Produced in Pb+Pb Collisions at 158A GeV Beam Energy

Author: Schuster, T., Laszlo, Andras, Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Meurer, C., Mischke, A., Mitrovski, M., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Yoo, I.K., and Zimanyi, J.
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Meson, Hadron, Nuclear Theory, FOS: Physical sciences, Modification factor, Spectral line, Baryon, Nuclear physics, Transverse momentum, Nuclear Physics - Experiment, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Nuclear Experiment, Beam energy
Abstract: Results of the NA49 collaboration on the production of hadrons with large transverse momentum in Pb+Pb collisions at 158A GeV beam energy are presented. A range up to p_T = 4 GeV/c is covered. The nuclear modification factor R_CP is extracted for pions, kaons and protons, and the baryon to meson ratios p/pi+, pbar/pi- and Lambda/K^0_s are studied. All results are compared to other measurements at SPS and RHIC and to theoretical calculations., Submitted to J. Phys. G (Proceedings of the 9th International Conference on Strangeness in Quark Matter, Los Angeles, USA, March 26-31, 2006). 5 pages, 3 figures
Published: 2006

49. Strangeness production at SPS energies

Author: Mitrovski, Michael K., Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Bialkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bramm, R., Buncic, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J.G., Csato, P., Dinkelaker, P., Eckardt, V., Flierl, D., Fodor, Z., Foka, P., Friese, V., Gal, J., Gazdzicki, M., Genchev, V., Georgopoulos, G., Gladysz, E., Grebieszkow, K., Hegyi, S., Hohne, C., Kadija, K., Karev, A., Kikola, D., Kliemant, M., Kniege, S., Kolesnikov, V.I., Kornas, E., Korus, R., Kowalski, M., Kraus, I., Kreps, M., Laszlo, A., Lacey, R., van Leeuwen, M., Levai, P., Litov, L., Lungwitz, B., Makariev, M., Malakhov, A.I., Mateev, M., Melkumov, G.L., Meurer, C., Mischke, A., Molnar, J., Mrowczynski, St., Nicolic, V., Palla, G., Panagiotou, A.D., Panayotov, D., Petridis, A., Peryt, W., Pikna, M., Pluta, J., Prindle, D., Puhlhofer, F., Renfordt, R., Roland, C., Roland, G., Rybczynski, M., Rybicki, A., Sandoval, A., Schmitz, N., Schuster, T., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Slodkowski, M., Stefanek, G., Stock, R., Strabel, C., Strobele, H., Susa, T., Szentpetery, I., Sziklai, J., Szuba, M., Szymanski, P., Trubnikov, V., Varga, D., Vassiliou, M., Veres, G.I., Vesztergombi, G., Vranic, D., Wetzler, A., Wlodarczyk, Z., Yoo, I.K., and Zimanyi, J.
Subjects: Nuclear Experiment, Nuclear Physics
Abstract: We present a summary of measurements of strange particles performed by the experiment NA49 in central and minimum bias Pb+Pb collisions in the beam energy range 20A - 158A GeV. New results on $\Xi$ production in central Pb+Pb collisions and on $\Lambda, \Xi$ production in minimum bias collisions are shown. Transverse mass spectra and rapidity distributions of strange particles at different energies are compared. The energy dependence of the particle yields and ratios is discussed. NA49 measurements of the $\Lambda$ and $\Xi$ enhancement factors are shown for the first time.
Published: 2006

50. Upper limit of D-0 production in central Pb-Pb collisions at 158A GeV

Author: Alt, C Anticic, T Baatar, B Barna, D Bartke, J and Betev, L Bialkowska, H Blume, C Boimska, B Botje, M and Bracinik, J Bramm, R Buncic, P Cerny, V Christakoglou, P and Chvala, O Cramer, JG Csato, P Dinkelaker, P Eckardt, V Flierl, D Fodor, Z Foka, P Friese, V Gal, J and Gazdzicki, M Genchev, V Georgopoulos, G Gladysz, E and Grebieszkow, K Hegyi, S Hohne, C Kadija, K Karev, A and Kliemant, M Kniege, S Kolesnikov, VI Kornas, E Korus, R and Kowalski, M Kraus, I Kreps, M van Leeuwen, M Levai, P Litov, L Lungwitz, B Makariev, M Malakhov, AI and Markert, C Mateev, M Melkumov, GL Mischke, A Mitrovski, M Molnar, J Mrowczynski, S Nicolic, V Palla, G and Panagiotou, AD Panayotov, D Petridis, A Pikna, M and Prindle, D Puhlhofer, F Renfordt, R Roland, C Roland, G and Rybczynski, M Rybicki, A Sandoval, A Schmitz, N and Schuster, T Seyboth, P Sikler, F Sitar, B Skrzypczak, E and Stefanek, G Stock, R Strobele, H Susa, T and Szentpetery, I Sziklai, J Szymanski, P Trubnikov, V and Varga, D Vassiliou, M Veres, GI Vesztergombi, G Vranic, D Wetzler, A Wlodarczyk, Z Yoo, IK Zimanyi, J NA49 Collaborat
Abstract: Results are presented from a search for the decays D-0-> K(-)pi(+) and (D) over bar (0)-> K(+)pi(-) in a sample of 3.8x10(6) central Pb-Pb events collected with a beam energy of 158A GeV by NA49 at the CERN SPS. No signal is observed. An upper limit on D-0 production is derived and compared to predictions from several models.
Published: 2006

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