Speaker
Prof.
Yuri Sinyukov
(Bogolyubov Institute for Theoretical Physics)
Description
The femtoscopic scales for identical pions and kaons are presented at different centralities for the top energy RHIC and LHC A+A collisions in comparison with ones for p+p collisions. The later results are obtained in hydrokinetic model (HKM) in view of the quantum uncertainty principle. The three-dimensional pion and kaon emission source functions are extracted from the HKM model simulations for A+A collisions. The model describes well the experimental data, previously obtained by the PHENIX and STAR collaborations using the imaging technique. In particular, the HKM reproduces the non-Gaussian heavy tails of the source function in the pair transverse momentum (out ) and beam (long) directions, observed in the pion case and practically absent for kaons. The role of the rescatterings and long-lived resonances decays in forming of the long range tails is investigated. The prediction is made for the source functions in the LHC Pb+Pb collisions at √s= 2.76 TeV.
As for the baryon-baryon correlations, the source functions of pp, pΛ and p ̅Λ pairs are found in Au+Au collisions and used by means of FSI correlation technique for an extraction of the scattering lengths in two-baryon systems. The role of residual correlations in formation of the total baryon-baryon correlation function is analyzed.
The talk is based on the results of the following works:
1. Iu.A. Karpenko, Yu.M. Sinyukov. Uniform description of bulk observables in the hydrokinetic model of A+A collisions at RHIC and LHC, Phys. Rev. C 87, 024914 (2013).
2. V.M. Shapoval, P. Braun-Munzinger, Iu.A. Karpenko, Yu.M. Sinyukov. Femtoscopic scales in p+p and p+Pb collisions in view of the uncertainty principle. Phys. Lett. B 725, 139 (2013).
3. V.M. Shapoval, Yu.M. Sinyukov, Iu.A. Karpenko. Emission source functions in heavy ion collisions, Phys. Rev C 88 064904 (2013).
4. V. M. Shapoval, B. Erazmus, R. Lednicky, and Yu. M. Sinyukov. Extracting pΛ and p ̅Λ scattering lengths from heavy ion collisions. Proceedings of the International School-Seminar “New Physics and Quantum Chromodynamics at External Conditions", pp. 115-119 , 2013, Dnipropetrovsk, Ukraine.
(Publication in preparation).
5. V.M. Shapoval, P. Braun-Munzinger, Iu.A. Karpenko, Yu.M. Sinyukov. Femtoscopic correlations of kaons in Pb+Pb and p+p collisions at LHC within hydrokinetic model.
(Publication in preparation).
Primary author
Prof.
Yuri Sinyukov
(Bogolyubov Institute for Theoretical Physics)
Co-authors
Prof.
Peter Braun-Munzinger
(EMMI/GSI)
Prof.
Richard Lednicky
(JINR)
Mr
Volodymyr Shapoval
(Bogolyubov Institute for Theoretical Physics)
