Книга: Marton Vargyas «Analysis of low-mass dilepton enhancement»
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Производитель: "LAP Lambert Academic Publishing" This book, an M. Sc. thesis in experimental nuclear physics, reports on a difficult and unresolved puzzle of relativistic heavy ion collisions: the enhanced production of low-mass lepton pairs in 200 GeV Au+Au collisions, as observed by the PHENIX experiment at Brookhaven National Laboratory`s Relativistic Heavy Ion Collider. Two partial explanations are given: The first is a possible in-medium mass modification of the eta` mesons, a signal of a symmetry restoration in hot and dense hadronic matter, inspired by theoretical models and a recent indirect measurement. These in-medium modified eta` mesons leave behind a fingerprint, their enhanced production in vacuum, that lead to enhanced dilepton production via the Dalitz-decay of eta` ->(e+ e- photon). As the enhancement is restricted to the soft transverse momentum region of pT ... ISBN:9783659242304 Издательство: "LAP Lambert Academic Publishing" (2012)
ISBN: 9783659242304 |
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