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Proton-Lambda correlations in central Pb+Pb collisions at √sNN = 17.3 GeV

(NA49 Collaboration) Anticic, T.; Baatar, B.; Barna, D.; Bartke, J.; Beck, H.; Betev, L.; Bialkowska, H.; Blume, C.; Bogusz, M.; Boimska, B.; Book, J.; Botje, M.; Buncic, P.; Cetner, T.; Christakoglou, P.; Chung, P.; Chvala, O.; Cramer, J. G.; Eckardt, V.; Fodor, Z.; Foka, P.; Friese, V.; Gazdzicki, M.; Grebieszkow, K.; Hoehne, C.; Kadija, K.; Karev, A.; Kolesnikov, V. I.; Kowalski, M.; Kresan, D.; Laszlo, A.; Lacey, R.; van Leeuwen, M.; Mackowiak, M.; Makariev, M.; Malakhov, A. I.; Mateev, M.; Melkumov, G. L.; Mitrovski, M.; Mrowczynski, St.; Nicolic, V.; Palla, G.; Panagiotou, A. D.; Peryt, W.; Pluta, J.; Prindle, D.; Puehlhofer, F.; Renfordt, R.; Roland, C.; Roland, G.; Rybczynski, M.; Rybicki, A.; Sandoval, A.; Schmitz, N.; Schuster, T.; Seyboth, P.; Sikler, F.; Skrzypczak, E.; Slodkowski, M.; Stefanek, G.; Stock, R.; Stroebele, H.; Susa, T.; Szuba, M.; Utvic, M.; Varga, D.; Vassiliou, M.; Veres, G. I.; Vesztergombi, G.; Vranic, D.; Wlodarczyk, Z.; Wojtaszek-Szwarc, A.; 1 ] (2011) Proton-Lambda correlations in central Pb+Pb collisions at √sNN = 17.3 GeV. Physical Review C, 83 (5). 054906/1-054906/7. ISSN 0556-2813

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Abstract

The momentum correlation between protons and Lambda particles emitted from central Pb+Pb collisions at √sNN = 17.3 GeV was studied by the NA49 experiment at the CERN Super Proton Synchrotron. A clear enhancement is observed for small relative momenta (qinv < 0.2 GeV). By fitting a theoretical model, which uses the strong interaction between the proton and the Lambda in a given pair, to the measured data, a value for the effective source size is deduced. Assuming a static Gaussian source distribution, we derive an effective radius parameter of RG = 3.02 ± 0.20(stat.)+0.44 −0.16(syst.) fm.

Item Type: Article
Uncontrolled Keywords: NA49; CERN; SPS; Pb+Pb; lambda; proton, correlation
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Experimental physics at LHC energies (Eksperimentalna fizika na LHC energijama)-Krešo Kadija098-0982887-2878MZOS
Depositing User: Tome Antičić
Date Deposited: 26 Feb 2016 15:09
Last Modified: 20 Feb 2017 12:00
URI: http://fulir.irb.hr/id/eprint/2552
DOI: 10.1103/PhysRevC.83.054906

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