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

(NA49 Collaboration) Anticic, T.; Baatar, B.; Bartke, J.; Beck, H.; Betev, L.; Bialkowska, H.; Blume, C.; Boimska, B.; Book, J.; Botje, M.; Buncic, P.; Christakoglou, P.; Chung, P.; Chvala, O.; Cramer, J.; Eckardt, V.; Fodor, Z.; Foka, P.; Friese, V.; Gazdzicki, M.; Grebieszkow, K.; Hoehne, C.; Kadija, K.; Karev, A.; Kolesnikov, V.; Kowalski, M.; Kresan, D.; Laszlo, A.; Lacey, R.; van Leeuwen, M.; Mackowiak-Pawlowska, M.; Makariev, M.; Malakhov, A.; Melkumov, G.; Mitrovski, M.; Mrowczynski, S.; Palla, G.; Panagiotou, A.; Pluta, J.; Prindle, D.; Puethlhofer, F.; Renfordt, R.; Roland, C.; Roland, G.; Rybczynski, M.; Rybicki, A.; Sandoval, A.; Rustamov, A.; Schmitz, N.; Schuster, T.; Scyboth, P.; Sikler, F.; Skrzypczak, E.; Slodkowski, M.; Stefanek, G.; Stock, R.; Stroebele, H.; Susa, T.; Szuba, M.; Varga, D.; Vassiliou, M.; Veres, G.; Vesztergombi, G.; Vranic, D.; Wlodarczyk, Z.; Wojtaszek-Szwarc, A.; 4 ] . (2015) 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, 94 (4). 044905/1-044905/10. ISSN 0556-2813

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	heavy-ion collisions, critical qcd, energy, model, na49
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Division of Experimental Physics
Projects:	Project title Project leader Project code Project type Experimental physics at LHC energies (Eksperimentalna fizika na LHC energijama)- Krešo Kadija 098-0982887-2878 MZOS
Depositing User:	Tome Antičić
Date Deposited:	11 Apr 2016 11:18
URI:	http://fulir.irb.hr/id/eprint/2693
DOI:	10.1103/PhysRevB.92.044905

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