Event plane dependence of the flow modulated background in dihadron and jet-hadron correlations in heavy ion collisions

Nattrass, Christine; Todoroki, Takahito

doi:10.1103/PhysRevC.97.054911

Title: Event plane dependence of the flow modulated background in dihadron and jet-hadron correlations in heavy ion collisions

Journal Article · 29 May 2018 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.97.054911 · OSTI ID:1496578

Nattrass, Christine ^[1]; Todoroki, Takahito ^[2]

Univ. of Tennessee, Knoxville, TN (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Di-hadron and jet-hadron correlations are commonly used in relativistic heavy ion collisions to study the soft component of jets in a quark gluon plasma. There is a large correlated background which is described by the Fourier decomposition of the azimuthal anisotropy where vn is the nth order coefficient. The path length dependence of partonic energy loss can be studied by varying the angle of the high momentum trigger particle or jet relative to a reconstructed event plane. This modifies the shape of the background correlated with that event plane. The original derivation of the shape of this background only considered correlations relative to the second order event plane, which is correlated to the initial participant plane. We derive the shape of this background for an event plane at an arbitrary order. There is a phase shift in the case of jets restricted to asymmetric regions relative to the event plane. For realistic correlations between event planes, the correlation between the second and fourth order event planes leads to a much smaller effect than the finite event plane resolution at each order. Lastly, we assess the status of the rapidity even v1 term due to low, which has been measured to be comparable to v₂ and v₃ terms.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0012704; FG02-96ER40982

OSTI ID:: 1496578

Alternate ID(s):: OSTI ID: 1439388

Report Number(s):: BNL-211296-2019-JAAM; PRVCAN

Journal Information:: Physical Review C, Vol. 97, Issue 5; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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