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

Abstract

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 tomore » be comparable to v 2 and v 3 terms.« less

Authors:
 [1];  [2]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1496578
Alternate Identifier(s):
OSTI ID: 1439388
Report Number(s):
BNL-211296-2019-JAAM
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:  
SC0012704; FG02-96ER40982
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 5; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Nattrass, Christine, and Todoroki, Takahito. Event plane dependence of the flow modulated background in dihadron and jet-hadron correlations in heavy ion collisions. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.054911.
Nattrass, Christine, & Todoroki, Takahito. Event plane dependence of the flow modulated background in dihadron and jet-hadron correlations in heavy ion collisions. United States. doi:10.1103/PhysRevC.97.054911.
Nattrass, Christine, and Todoroki, Takahito. Tue . "Event plane dependence of the flow modulated background in dihadron and jet-hadron correlations in heavy ion collisions". United States. doi:10.1103/PhysRevC.97.054911. https://www.osti.gov/servlets/purl/1496578.
@article{osti_1496578,
title = {Event plane dependence of the flow modulated background in dihadron and jet-hadron correlations in heavy ion collisions},
author = {Nattrass, Christine and Todoroki, Takahito},
abstractNote = {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.},
doi = {10.1103/PhysRevC.97.054911},
journal = {Physical Review C},
number = 5,
volume = 97,
place = {United States},
year = {2018},
month = {5}
}

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