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Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures Δ[PT,N] and Σ[PT,N] in nucleus-nucleus collisions at the CERN Super Proton Synchrotron (CROSBI ID 226700)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(NA49 Collaboration) Antičić, Tome ; Baatar, B. ; Bartke, J. ; Beck, H. ; Betev, L. ; Białkowska, H. ; Blume, C. ; Boimska, B. ; Book, J. ; Botje, M. et al. Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures Δ[PT,N] and Σ[PT,N] in nucleus-nucleus collisions at the CERN Super Proton Synchrotron // Physical review. C, Nuclear physics, 94 (2015), 4; 044905, 10. doi: 10.1103/PhysRevC.92.044905

Podaci o odgovornosti

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

NA49 Collaboration

engleski

Measurement of event-by-event transverse momentum and multiplicity fluctuations using strongly intensive measures Δ[PT,N] and Σ[PT,N] in nucleus-nucleus collisions at the CERN Super Proton Synchrotron

Results from the NA49 experiment at the CERN Super Proton Synchrotron (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 20A, 30A, 40A, 80A, and 158A GeV/c, as well as in systems of different sizes (p + p, C + C, Si + Si, and Pb Pb) at 158A GeV/c. This publication extends the previous NA49 measurements of the strongly intensive measure Phi(PT) 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 (SPS Heavy Ion and Neutrino Experiment) measurements in p + p collisions, as well as with predictions of The Ultrarelativistic Quantum Molecular Dynamics and EPOS models.

heavy-ion collisions ; critical qcd ; energy ; model ; na49

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Podaci o izdanju

94 (4)

2015.

044905

10

objavljeno

0556-2813

1089-490X

10.1103/PhysRevC.92.044905

Povezanost rada

Fizika

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