Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures $\Delta[P_T, N]$ and $\Sigma[P_T, N]$ in nucleus-nucleus collisions at the CERN Super Proton Synchrotron

Anticic, T.; Grebieszkow, K.; Słodkowski, M.; Lacey, R.; Melkumov, G.; Wojtaszek-Szwarc, A.; Siklér, F.; Eckardt, V.; Beck, H.; Laszlo, A.; Baatar, B.; Fodor, Z.; Schmitz, N.; Pluta, J.; Cramer, J.; Höhne, C.; Białkowska, H.; Malakhov, A.; Renfordt, R.; Kowalski, M.; Szuba, M.; Prindle, D.; Pühlhofer, F.; Christakoglou, P.; Schuster, T.; Stefanek, G.; Bartke, J.; Chung, P.; van Leeuwen, M.; Kadija, K.; Friese, V.; Veres, G.; Mrówczyński, S.; Karev, A.; Vranić, D.; Boimska, B.; Chvala, O.; Roland, G.; Gaździcki, M.; Włodarczyk, Z.; Rybczyński, M.; Kresan, D.; Ströbele, H.; Makariev, M.; Stock, R.; Kolesnikov, V.; Bunčić, P.; Foka, P.; Varga, D.; Mitrovski, M.; Skrzypczak, E.; Vassiliou, M.; Panagiotou, A.; Pálla, G.; Seyboth, P.; Betev, L.; Rybicki, A.; Blume, C.; Rustamov, A.; Vesztergombi, G.; Botje, M.; Book, J.; Susa, T.; Maćkowiak-Pawłowska, M.; Sandoval, A.; Roland, C.

doi:10.1103/PhysRevC.92.044905

Article
Report number	arXiv:1509.04633
Title	Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures $\Delta[P_T, N]$ and $\Sigma[P_T, N]$ in nucleus-nucleus collisions at the CERN Super Proton Synchrotron
Author(s)	Anticic, T. (Boskovic Inst., Zagreb) ; Baatar, B. (Dubna, JINR) ; Bartke, J. (Cracow, INP) ; Beck, H. (Frankfurt U.) ; Betev, L. (CERN) ; Białkowska, H. (Warsaw, Inst. Nucl. Studies) ; Blume, C. (Frankfurt U.) ; Boimska, B. (Warsaw, Inst. Nucl. Studies) ; Book, J. (Frankfurt U.) ; Botje, M. (NIKHEF, Amsterdam) ; Bunčić, P. (CERN) ; Christakoglou, P. (NIKHEF, Amsterdam) ; Chung, P. (SUNY, Stony Brook, Chem. Dept.) ; Chvala, O. (Charles U.) ; Cramer, J. (Washington U., Seattle) ; Eckardt, V. (Munich, Max Planck Inst.) ; Fodor, Z. (Wigner RCP, Budapest) ; Foka, P. (Darmstadt, GSI) ; Friese, V. (Darmstadt, GSI) ; Gaździcki, M. (Frankfurt U. ; Jan Kochanowski U.) ; Grebieszkow, K. (Warsaw U. of Tech.) ; Höhne, C. (Darmstadt, GSI) ; Kadija, K. (Boskovic Inst., Zagreb) ; Karev, A. (CERN) ; Kolesnikov, V. (Dubna, JINR) ; Kowalski, M. (Cracow, INP) ; Kresan, D. (Darmstadt, GSI) ; Laszlo, A. (Wigner RCP, Budapest) ; Lacey, R. (SUNY, Stony Brook, Chem. Dept.) ; van Leeuwen, M. (NIKHEF, Amsterdam) ; Maćkowiak-Pawłowska, M. (Frankfurt U. ; Warsaw U. of Tech.) ; Makariev, M. (Sofiya, Inst. Nucl. Res.) ; Malakhov, A. (Dubna, JINR) ; Melkumov, G. (Dubna, JINR) ; Mitrovski, M. (Frankfurt U.) ; Mrówczyński, S. (Jan Kochanowski U.) ; Pálla, G. (Wigner RCP, Budapest) ; Panagiotou, A. (Athens U.) ; Pluta, J. (Warsaw U. of Tech.) ; Prindle, D. (Washington U., Seattle) ; Pühlhofer, F. (Philipps U. Marburg) ; Renfordt, R. (Frankfurt U.) ; Roland, C. (MIT) ; Roland, G. (MIT) ; Rybczyński, M. (Jan Kochanowski U.) ; Rybicki, A. (Cracow, INP) ; Sandoval, A. (Darmstadt, GSI) ; Rustamov, A. (Frankfurt U.) ; Schmitz, N. (Munich, Max Planck Inst.) ; Schuster, T. (Frankfurt U.) ; Seyboth, P. (Munich, Max Planck Inst.) ; Siklér, F. (Wigner RCP, Budapest) ; Skrzypczak, E. (Warsaw U.) ; Słodkowski, M. (Warsaw U. of Tech.) ; Stefanek, G. (Jan Kochanowski U.) ; Stock, R. (Frankfurt U.) ; Ströbele, H. (Frankfurt U.) ; Susa, T. (Boskovic Inst., Zagreb) ; Szuba, M. (Warsaw U. of Tech.) ; Varga, D. (Eotvos U.) ; Vassiliou, M. (Athens U.) ; Veres, G. (Wigner RCP, Budapest) ; Vesztergombi, G. (Wigner RCP, Budapest) ; Vranić, D. (Darmstadt, GSI) ; Włodarczyk, Z. (Jan Kochanowski U.) ; Wojtaszek-Szwarc, A. (Jan Kochanowski U.) NA49 Collaboration Afficher les 66 auteurs
Publication	2015-10-12
Imprint	15 Sep 2015
Number of pages	10
Note	Comments: 12 pages, 14 figures, to be submitted to PRC 12 pages, 14 figures, to be submitted to PRC
In:	Phys. Rev. C 92 (2015) 044905
DOI	10.1103/PhysRevC.92.044905
Subject category	Nuclear Physics - Experiment
Abstract	Results from the NA49 experiment at the CERN SPS are presented on event-by-event transverse momentum and multiplicity fluctuations of charged particles, produced at forward rapidities in central Pb+Pb interactions at beam momenta 20 $A$ , 30 $A$ , 40 $A$ , 80 $A$ , and 158 $A$ GeV/c, as well as in systems of different size ( $p+p$ , C+C, Si+Si, and Pb+Pb) at 158 $A$ GeV/c. This publication extends the previous NA49 measurements of the strongly intensive measure $\Phi_{p_T}$ by a study of the recently proposed strongly intensive measures of fluctuations $\Delta[P_T, N]$ and $\Sigma[P_T, N]$ . In the explored kinematic region transverse momentum and multiplicity fluctuations show no significant energy dependence in the SPS energy range. However, a remarkable system size dependence is observed for both $\Delta[P_T, N]$ and $\Sigma[P_T, N]$ , with the largest values measured in peripheral Pb+Pb interactions. The results are compared with NA61/SHINE measurements in $p+p$ collisions, as well as with predictions of the UrQMD and EPOS models.
Copyright/License	arXiv nonexclusive-distrib. 1.0 Publication: © 2015-2025 American Physical Society

$(Color online) Examples of NA49 ($\phi,p_{T}$) acceptances of charged particles with the azimuthal angle of negatively charged particles reflected (see Ref.~\cite{Anticic:2008aa} for details). The solid lines represent the analytical parametrization of acceptance used for further analysis. Left: acceptance used for the energy scan of $p_T$ and $N$ fluctuations, example for $2.0 < y^{*}_{\pi} <2.2$. Right: acceptance used for the system size dependence of $p_T$ and $N$ fluctuations, examples for $1.2 < y^{*}_{\pi} <1.4$ and $2.4 < y^{*}_{\pi} <2.6$. Additional cut on $y_{p}^{*}$ (see the text) not included. Figure reproduced from Refs.~\cite{Anticic:2003fd, Anticic:2008aa} where parametrizations of the curves can be found.$ $(Color online) Examples of NA49 ($\phi,p_{T}$) acceptances of charged particles with the azimuthal angle of negatively charged particles reflected (see Ref.~\cite{Anticic:2008aa} for details). The solid lines represent the analytical parametrization of acceptance used for further analysis. Left: acceptance used for the energy scan of $p_T$ and $N$ fluctuations, example for $2.0 < y^{*}_{\pi} <2.2$. Right: acceptance used for the system size dependence of $p_T$ and $N$ fluctuations, examples for $1.2 < y^{*}_{\pi} <1.4$ and $2.4 < y^{*}_{\pi} <2.6$. Additional cut on $y_{p}^{*}$ (see the text) not included. Figure reproduced from Refs.~\cite{Anticic:2003fd, Anticic:2008aa} where parametrizations of the curves can be found.$ $(Color online) Additive corrections $\delta\Delta[P_T, N]$ (left) and $\delta\Sigma[P_T, N]$ (right) for limited two track resolution in the 7.2\% most central Pb+Pb events at 20$A$--158$A$ GeV/c. Estimates for positively charged, negatively charged and all charged particles are distinguished by different markers (see legend).$ Show more plots

Corresponding record in: Inspire

Retour à la recherche

Notice créée le 2015-09-16, modifiée le 2024-05-08

Notices similaires

APS Open Access article: