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
| Autorius: | Márton Vargyas |
| Leidėjas: | LAP Lambert Academic Publishing |
| Išleidimo metai: | 2012 |
| Knygos puslapių skaičius: | 80 |
| ISBN-10: | 3659242306 |
| ISBN-13: | 9783659242304 |
| Formatas: | Knyga minkštu viršeliu |
| Kalba: | Anglų |
| Žanras: | Relativity physics |
Parašykite atsiliepimą apie „Analysis of low-mass dilepton enhancement: In 200 GeV Au+Au collisions“
