System-size dependence of particle-ratio fluctuations in Pb + Pb collisions at 158A GeV

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

doi:10.1103/PhysRevC.87.024902

Μονάδα:

Ερευνητικό υλικό ΕΚΠΑ

Τίτλος:

System-size dependence of particle-ratio fluctuations in Pb + Pb collisions at 158A GeV

Γλώσσες Τεκμηρίου:

Αγγλικά

Περίληψη:

New measurements by the NA49 experiment of the centrality dependence of event-by-event fluctuations of the particle yield ratios (K++K -)/(π++π-), (p+p̄) /(π++π-), and (K++K-)/ (p+p̄) are presented for Pb+Pb collisions at 158A GeV. The absolute values of the dynamical fluctuations of these ratios, quantified by the measure σdyn, increase by about a factor of two from central to semiperipheral collisions. Multiplicity scaling scenarios are tested and found to apply for both the centrality and the previously published energy dependence of the (K++K-)/(π++π-) and (p+p̄)/(π++π-) ratio fluctuations. A description of the centrality and energy dependence of (K++K -)/(p+p̄) ratio fluctuations by a common scaling prescription is not possible since there is a sign change in the energy dependence. © 2013 American Physical Society.

Έτος δημοσίευσης:

2013

Συγγραφείς:

Anticic, T.
Baatar, B.
Barna, D.
Bartke, J.
Beck, H.
Betev, L.
Białkowska, H.
Blume, C.
Bogusz, M.
Boimska, B.
Book, J.
Botje, M.
Bunčić, P.
Cetner, T.
Christakoglou, P.
Chung, P.
Chvála, O.
Cramer, J.G.
Eckardt, V.
Fodor, Z.
Foka, P.
Friese, V.
Gaåodzicki, M.
Grebieszkow, K.
Höhne, C.
Kadija, K.
Karev, A.
Kolesnikov, V.I.
Kollegger, T.
Kowalski, M.
Kresan, D.
László, A.
Lacey, R.
Van Leeuwen, M.
MaćKowiak-Pawłowska, M.
Makariev, M.
Malakhov, A.I.
Mateev, M.
Melkumov, G.L.
Mitrovski, M.
Mrówczyński, S.
Nicolic, V.
Pálla, G.
Panagiotou, A.D.
Peryt, W.
Pluta, J.
Prindle, D.
Pühlhofer, F.
Renfordt, R.
Roland, C.
Roland, G.
Rybczyński, M.
Rybicki, A.
Sandoval, A.
Schmitz, N.
Schuster, T.
Seyboth, P.
Siklér, F.
Skrzypczak, E.
Słodkowski, M.
Stefanek, G.
Stock, R.
Ströbele, H.
Susa, T.
Szuba, M.
Utvić, M.
Varga, D.
Vassiliou, M.
Veres, G.I.
Vesztergombi, G.
Vranić, D.
Włodarczyk, Z.
Wojtaszek-Szwarc, A.

Περιοδικό:

PHYSICAL REVIEW C : NUCLEAR PHYSICS

Εκδότης:

American Physical Society

Τόμος:

Αριθμός / τεύχος:

Επίσημο URL (Εκδότης):

https://doi.org/10.1103/PhysRevC.87.024902

DOI:

10.1103/PhysRevC.87.024902

Μόνιμη διεύθυνση:

https://pergamos.lib.uoa.gr/uoa/dl/object/3073335

System-size dependence of particle-ratio fluctuations in Pb + Pb collisions at 158A GeV

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