Hidden asymmetry and long range rapidity correlations |
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| Authors: | A. Bialas A. Bzdak K. Zalewski |
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| Affiliation: | 1. H. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, Poland;2. M. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, 30-059 Krakow, Poland;3. RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, USA |
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| Abstract: | Interpretation of long-range rapidity correlations in terms of the fluctuating rapidity density distribution of the system created in high-energy collisions is proposed. When applied to recent data of the STAR Collaboration, it shows a substantial asymmetric component in the shape of this system in central Au–Au collisions, implying that boost invariance is violated on the event-by-event basis even at central rapidity. This effect may seriously influence the hydrodynamic expansion of the system. |
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| Keywords: | Long-range correlations Particle production |
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