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18 results on '"GABLER F"'

1. NA49 Results on Single Particle and Correlation Measurements in Central Pb+Pb Collisions

Author

Wang, Fuqiang, Appelshauser, H., Bachler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Boimska, B., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Buncic, P., Caines, H.L., Carr, L.D., Cebra, D.A., 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., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, John M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, Arthur M., Prindle, D.J., Puhlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strobele, H., Struck, C., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Voloshin, S., Vranic, D., Weerasundara, D.D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Xu, N., Yates, T.A., Zimanyi, J., Zhu, X.Z., and Zybert, R.

Subjects
Nuclear Theory, Nuclear Experiment, Particle Physics - Phenomenology
Abstract

Single-particle spectra and two-particle correlation functions measured by the NA49 collaboration in central Pb+Pb collisions at 158 GeV/nucleon are presented. These measurements are used to study the kinetic and chemical freeze-out conditions in heavy ion collisions. We conclude that large baryon stopping, high baryon density and strong transverse radial flow are achieved in central Pb+Pb collisions at the SPS. Single-particle spectra and two-particle correlation functions measured by the NA49 collaboration in central Pb+Pb collisions at 158 GeV/nucleon are presented. These measurements are used to study the kinetic and chemical freeze-out conditions in heavy ion collisions. We conclude that large baryon stopping, high baryon density and strong transverse radial flow are achieved in central Pb+Pb collisions at the SPS.

Published
2000

2. Two proton correlations from 158-A/GeV Pb + Pb central collisions

Author

Appelshauser, H., Bachler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, 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., Gazdzicki, M., Geist, W., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Lednicky, R., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, 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., Puhlhofer, F., Šuša, Tatjana, Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sammer, T., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Sikler, F., Skrzypczak, E., Snellings, R., Squier, G.T.A., Stock, R., Strobele, 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, Danilo, Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Wood, L., Xu, N., Yates, T.A., Zimanyi, J., Zhu, X.Z., and Zybert, R.

Subjects
Nuclear Theory, NA49, heavy ion, correlation function, proton, RQMD, VENUS, Nuclear Experiment
Abstract

The two-proton correlation function at midrapidity from Pb+Pb central collisions at 158 AGeV has been measured by the NA49 experiment. The results are compared to model predictions from static thermal Gaussian proton source distributions and transport models RQMD and VENUS. An effective proton source size is determined by minimizing CHI-square/ndf between the correlation functions of the data and those calculated for the Gaussian sources, yielding 3.85 +-0.15(stat.) +0.60-0.25(syst.) fm. Both the RQMD and the VENUS model are consistent with the data within the error in the correlation peak region.

Published
1999

3. Strangeness measurements in NA49 experiment with Pb projectiles

Author

Margetis, S. Appelshäuser, H. Bächler, J. Bailey, S.J. Barna, D. Barnby, L.S. Bartke, J. Barton, R.A. Bialkowska, H. Billmeier, A. Blyth, C.O. Bock, R. Bormann, C. Brady, F.P. Brockmann, R. Brun, R. Buncic, 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. Friese, V. Fuchs, M. Gabler, F. Gal, J. Gazdzicki, M. Gladysz, E. Grebieszkow, J. Günther, J. Harris, J.W. Hegyi, S. Henkel, T. Hill, L.A. Hümmler, H. Irmscher, D. Jacobs, P. Jones, P.G. Kadija, K. Kolesnikov, V.I. Kowalski, M. Lasiuk, B. Lévai, P. Malakhov, A.I. 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. Rauch, W. Reid, J.G. Renfordt, R. Retyk, W. Ritter, H.G. Röhrich, D. Roland, C. Roland, G. Rudolph, H. Rybicki, A. Sandoval, A. Sann, H. Semenov, A.Y. 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, C. Szentpetery, I. Sziklai, J. Trainor, T.A. Trentalange, S. Ullrich, T. Vassiliou, M. Veres, G. Vesztergombi, G. Vranic, D. Wang, F. Weerasundara, D.D. Wenig, S. Whitten, C. Wienold, T. Wood, L. Xu, N. Yates, T.A. Zimanyi, J. Zybert, R.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

Strangeness measurements in NA49 indicate a strangeness enhancement in Pb + Pb interactions, relative to the elementary nucleon-nucleon and nucleon-nucleus collisions. It appears that the magnitude of the enhancement is similar in Pb + Pb and S + nucleus collisions. The enhancement is present in almost every central Pb + Pb collision, the dynamical fluctuations (in strangeness) appear to be minimal. The magnitude of the enhancement increases with the strangeness content of the particle species. The inverse slope systematics indicate the presence of transverse flow in the system. The cascade/lambda ratio is increased relative to elementary collisions.

Published
1999

4. Baryon stopping and charged particle distributions in central Pb+Pb collisions at 158-GeV per nucleon

Author

Appelshauser, H., Bachler, J., Bailey, S.J., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Boimska, B., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Bunčić, P., Caines, H.L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M.I., Fischer, G.H., Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Ganz, R., Gazdzicki, M., Geist, W., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Huang, I., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Sikler, F., Skrzypczak, E., Squier, G.T.A., Stock, R., Strobele, H., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Vesztergombi, G., Vranić, Danilo, 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.

Subjects
High Energy Physics::Phenomenology, Nuclear Theory, Nuclear Experiment, NA49, heavy ion, stopping, transverse momentum, rapidity, baryon, hadron
Abstract

Net proton and negative hadron spectra for central PbPb collisions at 158 GeV per nucleon at the CERN SPS were measured and compared to spectra from lighter systems. Net baryon distributions were derived from those of net protons, utilizing model calculations of isospin contributions as well as data and model calculations of strange baryon distributions. Stopping (rapidity shift with respect to the beam) and mean transverse momentum meanpt of net baryons increase with system size. The rapidity density of negative hadrons scales with the number of participant nucleons for nuclear collisions, whereas their meanpt is independent of system size. The meanpt dependence upon particle mass and system size is consistent with larger transverse flow velocity at midrapidity for PbPb compared to SS central collisions.

Published
1999

5. Reconstruction over a large rapidity interval of lambda, antilambda and K^0_(S) in the NA49 experiment

Author

Appelshauser, H., Bachler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Billmeier, A., Blyth, C.O., Bock, R., 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., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Huang, I., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Squier, G.T.A., Stock, R., Strobele, H., Struck, C., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Vranić, Danilo, Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Yates, T.A., Zimanyi, J., Zhu, X.Z., and Zybert, R.

Subjects
NA49, heavy ion, neutral strange particle, Nuclear Theory, Nuclear Experiment
Abstract

The NA49 experiment is able to measure the production of neutral strange baryons and mesons along with other hadronic species in Pb+Pb collisions at 158 GeV per nucleon. These strange particles are an important piece of evidence in the search for the quark-gluon plasma. They have been reconstructed from their charged products recorded in the experiment-s time projection chambers. A new round of data production has been undertaken with improved software, allowing the reconstruction of neutral strange particles over a rapidity interval covering both sides of mid-rapidity. The procedures used to obtain this sample are outlined and a comparison of the phase space coverage with respect to previous measurements is made.

Published
1999

6. Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon

Author

Appelshauser, H Bachler, J Bailey, SJ Barnby, LS Bartke, J Barton, RA Bialkowska, H Billmeier, A Blyth, CO and Bock, R Boimska, B Bormann, C Brady, FP Brockmann, R and Brun, R Buncic, P Caines, HL Cebra, D Cooper, GE and Cramer, JG Csato, P Dunn, J Eckardt, V Eckhardt, F and Ferguson, MI Fischer, HG Flierl, D Fodor, Z Foka, P and Freund, P Friese, V Fuchs, M Gabler, F Gal, J Ganz, R Gazdzicki, M Geist, W Gladysz, E Grebieszkow, J and Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA and Huang, I Hummler, H Igo, G Irmscher, D Jacobs, P and Jones, PG Kadija, K Kolesnikov, VI Kowalski, M Lasiuk, B and Levai, P Malakhov, AI Margetis, S Markert, C and Melkumov, GL Mock, A Molnar, J Nelson, JM Oldenburg, M and Odyniec, G Palla, G Panagiotou, AD Petridis, A and Piper, A Porter, RJ Poskanzer, AM Poziombka, S Prindle, DJ Puhlhofer, F Reid, JG Renfordt, R Retyk, W and Ritter, HG Rohrich, D Roland, C Roland, G Rudolph, H and Rybicki, A Sandoval, A Sann, H Semenov, AY Schafer, E and Schmischke, D Schmitz, N Schonfelder, S Seyboth, P and Sikler, F Skrzypczak, E Squier, GTA Stock, R Strobele, H and Szentpetery, I Sziklai, J Toy, M Trainor, TA and Trentalange, S Ullrich, T Vassiliou, M Vesztergombi, G and Vranic, D Wang, F Weerasundara, DD Wenig, S Whitten, C and Wienold, T Wood, L Xu, N Yates, TA Zimanyi, J and Zhu, XZ Zybert, R NA49 Collaboration

Subjects
Nuclear Theory, Nuclear Physics - Experiment, Nuclear Experiment
Abstract

Net proton and negative hadron spectra for central Pb + Pb collisions at 158 GeV per nucleon at the CERN Super Proton Synchrotron were measured and compared to spectra from lighter systems. Net baryon distributions were derived from those of net protons. Stopping (rapidity shift with respect to the beam) and mean transverse momentum [p(T)] of net baryons increase with system size. The rapidity density of negative hadrons scales with the number of participant nucleons for nuclear collisions, whereas their [p(T)] is independent of system size. The [p(T)] dependence upon particle mass and system size is consistent with larger transverse flow velocity at midrapidity for Pb + Pb compared to S + S central collisions.

Published
1999

7. Two-proton correlations from 158 A GeV Pb+Pb central collisions

Author

Appelshauser, H Bachler, J Bailey, SJ Barna, D Barnby, LS Bartke, J Barton, RA Betev, L Bialkowska, H and Billmeier, A Blyth, CO Bock, R Boimska, B Bormann, C and Brady, FP Brockmann, R Brun, R Buncic, P Caines, HL and Carr, LD Cebra, D Cooper, GE Cramer, JG Cristinziani, M and Csata, P Dunn, J Eckardt, V Eckhardt, F Ferguson, MI and Fischer, HG Flierl, D Fodor, Z Foka, P Freund, P and Friese, V Fuchs, M Gabler, F Gal, J Ganz, R and Gazdzicki, M Geist, W Gladysz, E Grebieszkow, J Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA Hummler, H and Igo, G Irmscher, D Jacobs, P Jones, PG Kadija, K and Kolesnikov, VI Kowalski, M Lasiuk, B Lednicky, R Levai, P Malakhov, AI Margetis, S Markert, C Melkumov, GL and Mock, A Molnar, J Nelson, JM Oldenburg, M Odyniec, G and Palla, G Panagiotou, AD Petridis, A Piper, A Porter, RJ and Poskanzer, AM Prindle, DJ Puhlhofer, F Susa, T Reid, JG Renfordt, R Retyk, W Ritter, HG Rohrich, D and Roland, C Roland, G Rudolph, H Rybicki, A Sammer, T and Sandoval, A Sann, H Semenov, AY Schafer, E Schmischke, D and Schmitz, N Schonfelder, S Seyboth, P Sikler, F and Skrzypczak, E Snellings, R Squier, GTA Stock, R and Strobele, H Struck, C Szentpetery, I Sziklai, J Toy, M and Trainor, TA Trentalange, S Ullrich, T Vassiliou, M and Veres, G Vesztergombi, G Voloshin, S Vranic, D Wang, F and Weerasundara, DD Wenig, S Whitten, C Wood, L Xu, N and Yates, TA Zimanyi, J Zhu, XZ Zybert, R

Subjects
Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract

The two-proton correlation function at midrapidity from Pb + Pb central collisions at 158 A GeV has been measured by the NA49 experiment. The results are compared to model predictions from static thermal Gaussian proton source distributions and transport models rqmd and venus. An effective proton source size is determined by minimizing chi(2)/ndf between the correlation functions of the data and those calculated for the Gaussian sources, yielding sigma(eff) = 3.85 +/- 0.15(stat.)(-0.25)(+0.60)(syst.) fm. Both the rqmd and the venus model are consistent with the data within the error in the correlation peak region. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

Published
1999

8. Xi- and antiXi+ production in Pb + Pb collisions at 158-GeV per nucleon

Author

Bachler, J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Betev, L., Bialkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Boimska, B., Bormann, C., Bracinik, J., Brockmann, R., Brun, R., Bunčić, P., Caines, H.L., Cooper, G.E., Cramer, J.G., Cristinziani, M., Csato, P., Eckardt, V., Eckhardt, F., Fischer, H.G., Ftacnik, J., Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Gabler, F., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Hill, L.A., Hlinka, V., Huang, I., Igo, G., Ivanov, M., Jacobs, P., Janik, R., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Konashenok, A., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Mayes, W., Melkumov, G.L., Molnar, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Pikna, M., Pinsky, L., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rybicki, A., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmischke, D., Schmitz, N., Seyboth, P., Sikler, F., Sitar, B., Skrzypczak, E., Squier, G.T.A., Stock, R., Strmen, P., Strobele, H., Struck, C., Szarka, I., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Vranić, Danilo, Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Yates, T.A., Zimanyi, J., and Zybert, R.

Subjects
NA49, heavy ion, multistrange particle, MTPC, VTPC2, Nuclear Theory, Nuclear Experiment
Abstract

Preliminary results on multistrange particle production in central Pb+Pb collisions at 158 GeV per nucleon are presented. The NA49 experiment provides the capability of performing measurements of multistrange particles in two independent methods. The complementary acceptance of the methods in the MTPC and the VTPC2 detector cover a wide range of rapidity. Transverse mass spectra and rapidity distributions are presented. Preliminary particle ratios are shown and a first estimation of full phase-space multiplicity is completed.

Published
1999

9. Strangeness measurements in NA49 experiment with Pb projectiles

Author

Margetis, S., Appelshauser, H., Bachler, J., Bailey, Sj, Barna, D., Barnby, Ls, Bartke, J., Baton, Ra, Bialkowska, H., Billmeier, A., Blyth, Co, Bock, R., Bormann, C., Brady, Fp, Brockmann, R., Brun, R., Buncic, P., Caines, Hl, Lincoln Carr, Cebra, D., Cooper, Ge, Cramer, Jg, Cristinziani, M., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, Mi, Fischer, Hg, Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, Jw, Hegyi, S., Henkel, T., Hill, La, Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, Pg, Kadija, K., Kolesnikov, Vi, Kowalski, M., Lasiuk, B., Levai, P., Malakhov, Ai, Markert, C., Melkumov, Gl, Mock, A., Molnar, J., Nelson, Jm, Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, Ad, Petridis, A., Piper, A., Porter, Rj, Poskanzer, Am, Prindle, Dj, Puhlhofer, F., Rauch, W., Reid, Jg, Renfordt, R., Retyk, W., Ritter, Hg, Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sandoval, A., Sann, H., Semenov, Ay, Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Snellings, R., Squier, Gta, Stock, R., Strobele, H., Struck, C., Szentpetery, I., Sziklai, J., Toy, M., Trainor, Ta, Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Vranic, D., Wang, F., Weerasundara, Dd, Wenig, S., Whitten, C., Wienold, T., Wood, L., Xu, N., Yates, Ta, Zimanyi, J., Zhu, Xz, and Zybert, R.

Subjects
NA49, heavy ion, charge strange particle, neutral strange particle, Nuclear Theory, Nuclear Experiment
Abstract

Charged and neutral strange particle production was studied by the NA49 experiment at CERN. Preliminary inclusive spectra are presented for K^+/-, K^0_S, Phi, Lamda, Antilamda and ksi^+/- particles, measured in a region close to mid-rapidity, for central Pb+Pb collisions at 158 GeV per nucleon. An enhanced strange particle production relative to properly scaled nucleon-nucleon collisions is observed, but its strength is similar to lighter S + nucleus system. The enhancement is stronger for multistrange particles.

Published
1999

10. 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, and Sikler, F

Subjects
Nuclear Theory, Nuclear Experiment
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

11. HBT correlation in 158 AGeV Pb + Pb collisions

Author

Ganz, R., Appelshauser, H., Bachler, J., Bailey, S.J., Barna, D., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Buncic, P., Caines, H.L., Cebra, D.A., 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., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Huang, I., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, K., Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, John M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, Arthur M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., Rudolph, H., Rybicki, A., Sandoval, A., Sann, H., Semenov, A.Yu., Schafer, E., Schmischke, D., Schmitz, N., Schonfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Squier, G.T.A., Stock, R., Strobele, H., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T.A., Trentalange, S., Ullrich, T., Vassiliou, M., Veres, G., Vesztergombi, G., Vranic, D., Wang, F., Weerasundara, D.D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Yates, T.A., Zimanyi, J., Zhu, X.Z., and Zybert, R.

Subjects
Nuclear Theory, Nuclear Physics - Experiment, Nuclear Experiment
Abstract

The large acceptance TPCs of the NA49 spectrometer allow for a systematic multidimensional study of two-particle correlations in different part of phase space. Results from Bertsch-Pratt and Yano-Koonin-Podgoretskii parametrizations are presented differentially in transverse pair momentum and pair rapidity. These studies give an insight into the dynamical space-time evolution of relativistic Pb+Pb collisions, which is dominated by longitudinal expansion.

Published
1998

12. Spectator nucleons in Pb + Pb collisions at 158-a-GeV

Author

Appelshauser, H., Baechler, J., Bailey, S.J., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Bunčić, N., Bunčić, P., Caines, H.L., Cebra, D., Chan, P., Cooper, G.E., Cramer, J.G., Cramer, P.B., 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., Gazdzicki, M., Gladysz, E., Gorodetzky, P., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Huang, I., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, J.M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., and Roland

Subjects
Nuclear Theory, Target fragmentation. Ultrarelativistic energies. Multifragmentation, Nuclear Experiment
Abstract

The composition of forward-going projectile spectator matter in fixed-target Pb+Pb collisions at 158 A ˇ GeV at the CERN SPS has been studied as a function of centrality. The data were measured with the NA49 veto calorimeter. We observe that forward-going spectator matter in central collisions consists of 9 neutrons, 7 protons, and half a deuteron on average. At large impact parameters most spectator nucleons are bound in fragments. The relative resolution of the average impact parameter derived from the measurement of spectator neutrons is roughly 19 percent in the range from zero to half maximum impact parameters.

Published
1998

13. Directed and elliptic flow in 158GeV/nucleon Pb+Pb collisions

Author

Appelshauser, H Bachler, J Bailey, SJ Barnby, LS Bartke, J Barton, RA Bialkowska, H Blyth, CO Bock, R and Bormann, C Brady, FP Brockmann, R Buncic, N Buncic, P and Caines, HL Cebra, D Cooper, GE Cramer, JG Csato, P and Dunn, J Eckardt, V Eckhardt, F Ferguson, MI Fischer, HG Flierl, D Fodor, Z Foka, P Freund, P Friese, V and Fuchs, M Gabler, F Gal, J Gazdzicki, M Gladysz, E and Grebieszkow, J Gunther, J Harris, JW Hegyi, S and Henkel, T Hill, LA Huang, I Hummler, H Igo, G and Irmscher, D Jacobs, P Jones, PG Kadija, K Kolesnikov, VI and Kowalski, M Lasiuk, B Levai, P Malakhov, AI and Margetis, S Markert, C Melkumov, GL Mock, A Molnar, J and Nelson, JM Odyniec, G Palla, G Panagiotou, AD and Petridis, A Piper, A Porter, RJ Poskanzer, AM Poziombka, S Prindle, DJ Puhlhofer, F Rauch, W Reid, JG and Renfordt, R Retyk, W Ritter, HG Rohrich, D Roland, C and Roland, G Rudolph, H Rybicki, A Sandoval, A Sann, H and Semenov, AY Schafer, E Schmischke, D Schmitz, N and Schonfelder, S Seyboth, P Seyerlein, J Sikler, F and Skrzypczak, E Squier, GTA Stock, R Strobele, H and Szentpetery, I Sziklai, J Toy, M Trainor, TA and Trentalange, S Ullrich, T Vassiliou, M Vesztergombi, G and Voloshin, S Vranic, D Wang, F Weerasundara, DD Wenig, S and Whitten, C Wienold, T Wood, L Yates, TA Zimanyi, J and Zybert, R NA49 Collaboration

Subjects
Physics::Fluid Dynamics, Nuclear Theory, Nuclear Experiment
Abstract

The directed and elliptic flow of protons and charged pions has been observed from the semicentral collisions of a 158 GeV/nucleon Ph beam with a Pb target. The rapidity and transverse momentum dependence of the flow has been measured. The directed flow of the pions is opposite to that of the protons but both exhibit negative flow at low p(t). The elliptic flow of both is fairly independent of rapidity but rises with p(t).

Published
1998

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

Author

Appelshauser, H., Baechler, J., Bailey, S.J., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Billmeier, A., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Brunn, R., Bunčić, P., Caines, H.L., Cebra, D., Cooper, G.E., Cramer, J.G., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M.I., Ferenc, D., Fischer, H.G., Flierl, D., Fodor, Z., Foka, P., Freund, P., Friese, V., Fuchs, M., Gabler, F., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Huang, I., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, J.M., Odyniec, G., Oldenberg, M., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., and Roland

Subjects
Physics, Particle physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), Hadron, Nuclear Theory, Charged particle, Nuclear physics, Transverse plane, Coulomb, Transverse mass, heavy-ion collisions, multistring model venus, source parameters, energy-flow, equilibration, Nucleon, Nuclear Experiment, Engineering (miscellaneous), NA49 experiment
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

15. Directed and elliptic flow in 158-GeV/nucleon Pb + Pb collisions

Author

Appelshauser, H., Baechler, J., Bailey, S.J., Barnby, L.S., Bartke, J., Barton, R.A., Bialkowska, H., Blyth, C.O., Bock, R., Bormann, C., Brady, F.P., Brockmann, R., Brun, R., Bunčić, P., Caines, H.L., Cebra, D., Cooper, G.E., Cramer, J.G., 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., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Gunther, J., Harris, J.W., Hegyi, S., Henkel, T., Hill, L.A., Hummler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P.G., Kadija, Krešo, Kolesnikov, V.I., Kowalski, M., Lasiuk, B., Levai, P., Liu, F., Malakhov, A.I., Margetis, S., Markert, C., Melkumov, G.L., Mock, A., Molnar, J., Nelson, J.M., Oldenburg, M., Odyniec, G., Palla, G., Panagiotou, A.D., Petridis, A., Piper, A., Porter, R.J., Poskanzer, A.M., Poziombka, S., Prindle, D.J., Puhlhofer, F., Rauch, W., Reid, J.G., Renfordt, R., Retyk, W., Ritter, H.G., Rohrich, D., Roland, C., Roland, G., and Rudolph, H.

Subjects
Physics::Fluid Dynamics, Nuclear Theory, Nuclear Experiment
Abstract

The directed and elliptic flow of protons and charged pions has been observed from the semi-central collisions of a 158 GeV/nucleon Pb beam with a Pb target. The rapidity and transverse momentum dependence of the flow has been measured. The directed flow of the pions is opposite to that of the protons but both exhibit negative flow at low pt. The elliptic flow of both is fairly independent of rapidity but rises with pt.

Published
1998

16. Spectator nucleons in Pb+Pb collisions at 158 A center dot GeV

Author

Appelshauser, H Bachler, J Bailey, SJ Barnby, LS Bartke, J Barton, RA Bialkowska, H Blyth, CO Bock, R and Bormann, C Brady, FP Brockmann, R Buncic, N Buncic, P and Caines, HL Cebra, D Chan, P Cooper, GE Cramer, JG and Cramer, PB Csato, P Dunn, J Eckardt, V Eckhardt, F and Ferguson, MI Fischer, HG Flierl, D Fodor, Z Foka, P and Freund, P Friese, V Fuchs, M Gabler, F Gal, J and Gazdzicki, M Gladysz, E Gorodetsky, P Grebieszkow, J and Gunther, J Harris, JW Hegyi, S Henkel, T Hill, LA and Huang, I Hummler, H Igo, G Irmscher, D Jacobs, P and Jones, PG Kadija, K Kolesnikov, VI Kowalski, M Lasiuk, B and Levai, P Malakhov, AI Margetis, S Markert, C and Melkumov, GL Mock, A Molnar, J Nelson, JM Odyniec, G and Palla, G Panagiotou, AD Petridis, A Piper, A Porter, RJ and Poskanzer, AM Poziombka, S Prindle, DJ Puhlhofer, F and Rauch, W Reid, JG Renfordt, R Retyk, W Ritter, HG and Rohrich, D Roland, C Roland, G Rudolph, H Rybicki, A and Sakrejda, I Sandoval, A Sann, H Semenov, AY Schafer, E and Schmischke, D Schmitz, N Schonfelder, S Seyboth, P and Seyerlein, J Sikler, F Skrzypczak, E Squier, GTA Stock, R Strobele, H Szentpetery, I Sziklai, J Toy, M and Trainor, TA Trentalange, S Ullrich, T Vassiliou, M and Vesztergombi, G Vranic, D Wang, F Weerasundara, DD and Wenig, S White, S Whitten, C Wienold, T Wood, L and Yates, TA Zimanyi, J Zhu, XZ Zybert, R NA49 Collaboration

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

The composition of forward-going projectile spectator matter in fixed-target Pb+Pb collisions at 158 A.GeV at the CERN SPS has been studied as a function of centrality. The data were measured with the NA49 veto calorimeter. We observe that forward-going spectator matter in central collisions consists of 9 neutrons, 7 protons, and half a deuteron on average. At large impact parameters most spectator nucleons are bound in fragments. The relative resolution of the average impact parameter derived from the measurement of spectator neutrons is roughly 19% in the range from zero to half maximum impact parameters.

Published
1998

17. Phi Production in 158 GeV/u Pb+Pb-Collisions

Author

Friese, V., Afanasiev, S. V., Alber, T., Appelshäuser, H., Bächler, J., Bailey, S. J., Barnby, L. S., Bartke, J., Biakowska, H., Blyth, C. O., Bock, R., Bormann, C., Brady, F. P., Brockmann, R., Bunčić, N., Bunčić, P., Caines, H. L., Cebra, D., Chan, P., Cooper, G. E., Cramer, J. G., Cramer, P. B., Csato, P., Dietz, O., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M. I., Fischer, H. G., Flierl, D., Fodor, Z., Foka, P., Freund, P., Fuchs, M., Gabler, F., Gal, J., Gazdzicki, M., Gladysz, E., Grebieszkow, J., Günther, J., Harris, J. W., Hegyi, S., Henkel, T., Hill, L. A., Huang, I., Howe, M. A., Hümmler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P. G., Kadija, Krešo, 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., Odyniec, G., Palla, G., Panagiotou, A. D., Petridis, A., 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., and Sakrejda, I.

Subjects
NA49, heavy ion, phi, TPC, time projection chamber, Pb+Pb, Nuclear Theory, High Energy Physics::Experiment, Nuclear Experiment
Abstract

Preliminary data on phi production in central Pb+Pb collisions at 158 GeV per nucleon are presented, measured by the NA49 experiment in the hadronic decay channel phi->K+K-. At midrapidity, the kaons were seperated from pions and protons by combining dE/dx and TOF information ; in the forward rapidity range only dE/dx identification was used to obtain the rapidity distribution and a rapidity-integrated mt-spectrum. The midrapidity yield obtained is dN/dy=1.85 +- 0.3 per event, the total phi yield is estimated to be 5.0 +-0.7 per event. Comparison with published pp-data shows a slight but not very significant strangeness enhancement.

Published
1997

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

Author

Appelshäuser, H., Bächler, J., Bailey, S. J., Barnby, L. S., Bartke, J., Barton, R. A., Białkowska, H., Billmeier, A., Blyth, C. O., Bock, R., Bormann, C., Brady, F. P., Brockmann, R., Brun, R., Bunčić, P., Caines, H. L., Cebra, D., Cooper, G. E., Cramer, J. G., Csato, P., Dunn, J., Eckardt, V., Eckhardt, F., Ferguson, M. I., Ferenc, D., Fischer, H. G., 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, J. W., Hegyi, S., Henkel, T., Hill, L. A., Huang, I., Hümmler, H., Igo, G., Irmscher, D., Jacobs, P., Jones, P. G., Kadija, K., Kolesnikov, V. I., Marek Kowalski, 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., 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., Sandoval, A., Sann, H., Semenov, A. Y., Schäfer, E., Schmischke, D., Schmitz, N., Schönfelder, S., Seyboth, P., Seyerlein, J., Sikler, F., Skrzypczak, E., Squier, G. T. A., Stock, R., Ströbele, H., Struck, C., Szentpetery, I., Sziklai, J., Toy, M., Trainor, T. A., Trentalange, S., Ullrich, T., Vassiliou, M., Vesztergombi, G., Vranic, D., Wang, F., Weerasundara, D. D., Wenig, S., Whitten, C., Wienold, T., Wood, L., Yates, T. A., Xu, N., Zimanyi, J., Zhu, X. -Z, and Zybert, R.

Subjects
Nuclear Theory, Nuclear Experiment, Particle Physics - Experiment
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.

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