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

C. Alt, T. Anticic, B. Baatar, D. Barna, J. Bartke, L. Betev, H. Białkowska, C. Blume, B. Boimska, M. Botje, J. Bracinik, P. Bunćić, V. Cerny, P. Christakoglou, P. Chung, O. Chvala, J. G. Cramer, P. Csató, P. Dinkelaker, V. EckardtD. Flierl, Z. Fodor, P. Foka, V. Friese, J. Gál, M. Gaździcki, V. Genchev, E. Gładysz, K. Grebieszkow, S. Hegyi, C. Höhne, K. Kadija, A. Karev, S. Kniege, V. I. Kolesnikov, R. Korus, M. Kowalski, M. Kreps, A. Laszlo, R. Lacey, M. van Leeuwen, P. Lévai, L. Litov, B. Lungwitz, M. Makariev, A. I. Malakhov, M. Mateev, G. L. Melkumov, M. Mitrovski, J. Molnár, St Mrówczyński, V. Nicolic, G. Pálla, A. D. Panagiotou, D. Panayotov, A. Petridis, W. Peryt, M. Pikna, J. Pluta, D. Prindle, F. Pühlhofer, R. Renfordt, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, T. Schuster, P. Seyboth, F. Siklér, B. Sitar, E. Skrzypczak, M. Slodkowski, G. Stefanek, R. Stock, H. Ströbele, T. Susa, I. Szentpétery, J. Sziklai, M. Szuba, P. Szymanski, V. Trubnikov, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranić, Z. Włodarczyk, A. Wojtaszek, I. K. Yoo, J. M. Alexander, P. Danielewicz, A. Kisiel, S. Pratt

Research output: Article

4 Citations (Scopus)

Abstract

Source imaging methodology is used to provide a three-dimensional two-pion source function for mid-rapidity pion pairs with pT < 70 MeV / c in central (0-7%) Pb + Pb collisions at sqrt(s)NN = 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.

Original languageEnglish
Pages (from-to)41-46
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume685
Issue number1
DOIs
Publication statusPublished - febr. 22 2010

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Alt, C., Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Białkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bunćić, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Csató, P., Dinkelaker, P., ... Pratt, S. (2010). Three-dimensional two-pion source image from Pb + Pb collisions at sqrt(sNN) = 17.3 GeV: New constraints for source breakup dynamics. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 685(1), 41-46. https://doi.org/10.1016/j.physletb.2010.01.029