Event-by-Event Fluctuations and the Search for the Critical Point within the NA49 Experiment

Anticic, T.; Grebieszkow, K.; Yoo, I.K.; Peryt, W.; Eckardt, V.; Lungwitz, B.; Fodor, Z.; Schmitz, N.; Sziklai, J.; Bartke, J.; Chung, P.; Kadija, K.; Friese, V.; Sikler, F.; Csato, P.; Utvic, M.; Slodkowski, M.; Wlodarczyk, Z.; Vassiliou, M.; Bialkowska, H.; Strabel, C.; Laszlo, A.; Melkumov, G.L.; Kolesnikov, V.I.; Book, J.; Blume, C.; Cramer, J.G.; Panagiotou, A.D.; Pluta, J.; Szuba, M.; Stefanek, G.; Barna, D.; van Leeuwen, M.; Vranic, D.; Kraus, I.; Chvala, O.; Roland, G.; Hohne, C.; Gal, J.; Hegyi, S.; Kresan, D.; Makariev, M.; Mischke, A.; Petridis, A.; Palla, G.; Betev, L.; Botje, M.; Mitrovski, M.; Mrowczynski, St.; Beck, H.; Dinkelaker, P.; Baatar, B.; Kowalski, M.; Christakoglou, P.; Litov, L.; Susa, T.; Levai, P.; Skrzypczak, E.; Gazdzicki, M.; Sitar, B.; Lacey, R.; Rybicki, A.; Stock, R.; Strobele, H.; Pikna, M.; Genchev, V.; Molnar, J.; Szentpetery, I.; Mateev, M.; Puhlhofer, F.; Szymanski, P.; Malakhov, A.I.; Kreps, M.; Renfordt, R.; Prindle, D.; Buncic, P.; Schuster, T.; Cerny, V.; Karev, A.; Boimska, B.; Foka, P.; Varga, D.; Wojtaszek, A.; Seyboth, P.; Rybczynski, M.; Nicolic, V.; Meurer, C.; Veres, G.I.; Vesztergombi, G.; Bracinik, J.; Panayotov, D.; Sandoval, A.; Roland, C.

doi:10.22323/1.071.0029

Article
Report number	arXiv:0910.0558
Title	Event-by-Event Fluctuations and the Search for the Critical Point within the NA49 Experiment
Related title	NA49: Search for the critical point and fluctuations
Author(s)	Anticic, T. (Boskovic Inst., Zagreb) ; Baatar, B. (Dubna, JINR) ; Barna, D. (Budapest, RMKI) ; Bartke, J. (Cracow, INP) ; Beck, H. (Frankfurt U.) ; Betev, L. (CERN) ; Bialkowska, H. (Warsaw, Inst. Nucl. Studies) ; Blume, C. (Frankfurt U.) ; Boimska, B. (Warsaw, Inst. Nucl. Studies) ; Book, J. (Frankfurt U.) ; Botje, M. (NIKHEF, Amsterdam) ; Bracinik, J. (Comenius U.) ; Buncic, P. (CERN) ; Cerny, V. (Comenius U.) ; Christakoglou, P. (Athens U.) ; Chung, P. (SUNY, Stony Brook, Chem. Dept.) ; Chvala, O. (Charles U.) ; Cramer, J.G. (CENPA, Seattle) ; Csato, P. (Budapest, RMKI) ; Dinkelaker, P. (Frankfurt U.) ; Eckardt, V. (Munich, Max Planck Inst.) ; Fodor, Z. (Budapest, RMKI) ; Foka, P. (Darmstadt, GSI) ; Friese, V. (Darmstadt, GSI) ; Gal, J. (Budapest, RMKI) ; Gazdzicki, M. (Frankfurt U. ; Jan Kochanowski U.) ; Genchev, V. (Sofiya, Inst. Nucl. Res.) ; Grebieszkow, K. (Warsaw U. of Tech.) ; Hegyi, S. (Budapest, RMKI) ; Hohne, C. (Darmstadt, GSI) ; Kadija, K. (Boskovic Inst., Zagreb) ; Karev, A. (Munich, Max Planck Inst.) ; Kresan, D. (Darmstadt, GSI) ; Kolesnikov, V.I. (Dubna, JINR) ; Kowalski, M. (Cracow, INP) ; Kraus, I. (Darmstadt, GSI) ; Kreps, M. (Comenius U.) ; Laszlo, A. (Budapest, RMKI) ; Lacey, R. (SUNY, Stony Brook, Chem. Dept.) ; van Leeuwen, M. (NIKHEF, Amsterdam) ; Levai, P. (Budapest, RMKI) ; Litov, L. (Sofiya U.) ; Lungwitz, B. (Frankfurt U.) ; Makariev, M. (Sofiya U.) ; Malakhov, A.I. (Dubna, JINR) ; Mateev, M. (Sofiya U.) ; Melkumov, G.L. (Dubna, JINR) ; Meurer, C. (Frankfurt U.) ; Mischke, A. (NIKHEF, Amsterdam) ; Mitrovski, M. (Frankfurt U.) ; Molnar, J. (Budapest, RMKI) ; Mrowczynski, St. (Jan Kochanowski U.) ; Nicolic, V. (Boskovic Inst., Zagreb) ; Palla, G. (Budapest, RMKI) ; Panagiotou, A.D. (Athens U.) ; Panayotov, D. (Sofiya U.) ; Petridis, A. (Athens U.) ; Peryt, W. (Warsaw U. of Tech.) ; Pikna, M. (Comenius U.) ; Pluta, J. (Warsaw U. of Tech.) ; Prindle, D. (CENPA, Seattle) ; Puhlhofer, F. (Marburg U., ITP) ; Renfordt, R. (Frankfurt U.) ; Roland, C. (MIT) ; Roland, G. (MIT) ; Rybczynski, M. (Jan Kochanowski U.) ; Rybicki, A. (Cracow, INP) ; Sandoval, A. (Darmstadt, GSI) ; Schmitz, N. (Munich, Max Planck Inst.) ; Schuster, T. (Frankfurt U.) ; Seyboth, P. (Munich, Max Planck Inst.) ; Sikler, F. (Budapest, RMKI) ; Sitar, B. (Comenius U.) ; Skrzypczak, E. (Warsaw U.) ; Slodkowski, M. (Warsaw U. of Tech.) ; Stefanek, G. (Jan Kochanowski U.) ; Stock, R. (Frankfurt U.) ; Strabel, C. (Frankfurt U.) ; Strobele, H. (Frankfurt U.) ; Susa, T. (Boskovic Inst., Zagreb) ; Szentpetery, I. (Budapest, RMKI) ; Sziklai, J. (Budapest, RMKI) ; Szuba, M. (Warsaw U. of Tech.) ; Szymanski, P. (Warsaw, Inst. Nucl. Studies) ; Utvic, M. (Frankfurt U.) ; Varga, D. (Budapest, RMKI ; CERN) ; Vassiliou, M. (Athens U.) ; Veres, G.I. (Budapest, RMKI ; MIT) ; Vesztergombi, G. (Budapest, RMKI) ; Vranic, D. (Darmstadt, GSI) ; Wlodarczyk, Z. (Jan Kochanowski U.) ; Wojtaszek, A. (Jan Kochanowski U.) ; Yoo, I.K. (Pusan Natl. U.)
Publication	2009
Imprint	06 Oct 2009
Number of pages	18
Note	Comments: prepared for the proceedings of the 5th International Workshop on Critical Point and Onset of Deconfinement (CPOD 2009) June 08 - 12 2009 Brookhaven National Laboratory, Long Island, New York, USA (18 pages, 12 figures)
In:	PoS CPOD 2009 (2009) 029
In:	5th International Workshop on Critical Point and Onset of Deconfinement, Long Island, NY, USA, 8 - 12 Jun 2009, pp.029
DOI	10.22323/1.071.0029
Subject category	Nuclear Physics - Experiment
Accelerator/Facility, Experiment	CERN SPS ; NA49
Abstract	In heavy-ion collisions in the energy regime probed at the CERN SPS, experimental hints for the deconfinement phase transition have been seen in numerous inclusive hadronic observables. In order to further characterize this transition, and in the pursuit of indications for the expected critical point of strongly interacting matter, the NA49 collaboration has conducted analyses of the event-by-event fluctuations of various hadronic observables. A selection of these results will be presented and discussed in the light of theoretical predictions. Among these are new results on hadron ratio fluctuations, in particular K/p fluctuations and their potential connection to the correlation between strangeness and baryon number, thus revealing the basic degrees of freedom produced in heavy-ion collisions.
Copyright/License	CC-BY-NC-SA-3.0

$Sketch of the phase diagram of strongly interacting matter in the plane temperature ($T$) vs.\ baryonic chemical potential (\mub). Symbols denote the chemical freeze-out parameters of heavy-ion collisions at different energies as extracted by statistical model fits~\cite{Becattini:2005xt}. The line indicates the conjectured phase transition, changing from first order (full line) to a cross-over (dashed line) at the critical endpoint \emph{E}~\cite{Fodor:2004nz}.$ $The baryon-strangeness correlation coefficient \cbs~\cite{Koch:2005vg}. Left: The expected \cbs\ for a quark gluon plasma, a grand canonical hadron-resonance gas (taken from~\cite{Koch:2005vg}) compared to calculations performed in the transport model UrQMD (see also~\cite{Haussler:2006mq}). Right: \cbs\ from a lattice QCD calculation at \mub\ = 0~\cite{Cheng:2008zh}.$ $The baryon-strangeness correlation coefficient \cbs~\cite{Koch:2005vg}. Left: The expected \cbs\ for a quark gluon plasma, a grand canonical hadron-resonance gas (taken from~\cite{Koch:2005vg}) compared to calculations performed in the transport model UrQMD (see also~\cite{Haussler:2006mq}). Right: \cbs\ from a lattice QCD calculation at \mub\ = 0~\cite{Cheng:2008zh}.$ Show more plots

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