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Three-dimensional two-pion source image from Pb +Pb collisions at √sNN = 17.3 GeV : New constraints for source breakup dynamics

Authors :
Alt, C.
Antičić, Tome
Baatar, B.
Barna, D.
Bartke, J.
Betev, L.
Bialkowska, H.
Blume, C.
Boimska, B.
Botje, M.
Bracinik, J.
Bunčić, Predrag
Cerny, V.
Christakoglou, P.
Chung, P.
Chvala, O.
Cramer, J.G.
Csato, P.
Dinkelaker, P.
Eckardt, V.
Flierl, D.
Fodor, Z.
Foka, P.
Friese, V.
Gal, J.
Gazdzicki, M.
Genchev, V.
Gladysz, E.
Grebieszkow, K.
Hegyi, S.
Hohne, C.
Kadija, Krešo
Karev, A.
Kniege, S.
Kolesnikov, V. I.
Korus, R.
Kowalski, M.
Kreps, M.
Laszlo, A.
Lacey, R.
van Leeuwen, M.
Levai, P.
Litov, L.
Lungwitz, B.
Makariev, M.
Malakhov, A. I.
Mateev, M.
Melkumov, G. L.
Mitrovski, M.
Molnar, J.
Mrowczynski, St.
Nikolić, Vedran
Palla, G.
Panagiotou, A. D.
Panayotov, D.
Petridis, A.
Peryt, W
Pikna, M.
Pluta, J.
Prindle, D.
Puhlhofer, F.
Renfordt, R.
Roland, C.
Roland, G.
Rybczynski, M.
Rybicki, A.
Sandoval, A.
Schmitz, N.
Schuster, T.
Seyboth, P.
Sikler, F.
Sitar, B.
Skrzypczak, E.
Slodkowski, M.
Stefanek, G.
Stock, R.
Strabel, C.
Strobele, H.
Šuša, Tatjana
Szentpetery, I.
Sziklai, J.
Szuba, M.
Szymanski, P.
Trubnikov, V.
Varga, D.
Vassiliou, M.
Veres, G. I.
Vesztergombi, G.
Vranić, Danilo
Wlodarczyk, Z.
Wojtaszek, A.
Yoo, I. K.
Alexanders, J. M.
Danielewicz, P.
Kisiel, A.
Pratt, S.
Source :
Physics Letters B
Publication Year :
2010
Publisher :
Elsevier: SCOAP3, 2010.

Abstract

Source imaging methodology is used to provide a three-dimensional two-pion source function for midrapidity pion pairs with pT < 70 MeV/c in central (0–7%) Pb + Pb collisions at √sNN = 17.3 GeV. Prominent non-Gaussian tails are observed in the pion pair transverse momentum (outward) and in the beam (longitudinal) directions. Model calculations reproduce them with the assumption of Bjorken longitudinal boost invariance and transverse flow blast-wave dynamics ; they also yield a proper time for breakup and emission duration for the pion source.

Subjects

Subjects :
Physics
Nuclear Theory
Physics::Accelerator Physics
CERN
SPS
NA49
source imaging
pions
High Energy Physics::Experiment
Nuclear Experiment

Details

Language :
Croatian
Database :
OpenAIRE
Journal :
Physics Letters B
Accession number :
edsair.dedup.wf.001..9924e991f052dc84dbb06d13401175c4

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