The European Physical Journal C | |
Origins of the di-jet asymmetry in heavy-ion collisions | |
José Guilherme Milhano1  Korinna Christine Zapp1  | |
[1] CENTRA, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisbon, Portugal;Physics Department, Theory Unit, CERN, 1211, Geneva 23, Switzerland; | |
关键词: Parton Shower; Monte Carlo Event Generator; Initial Asymmetry; Initial State Parton Shower; Initial State Emission; | |
DOI : 10.1140/epjc/s10052-016-4130-9 | |
来源: Springer | |
【 摘 要 】
The di-jet asymmetry—the measure of the momentum imbalance in a di-jet system—is a key jet quenching observable. Using the event generator Jewel we show that the di-jet asymmetry is dominated by fluctuations both in proton–proton and in heavy-ion collisions. We discuss how in proton–proton collisions the asymmetry is generated through recoil and out-of-cone radiation. In heavy-ion collisions two additional sources can contribute to the asymmetry, namely energy loss fluctuations and differences in path length. The latter is shown to be a sub-leading effect. We discuss the implications of our results for the interpretation of this observable.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO202112172486651ZK.pdf | 1726KB | download |