Effect of the fluctuating proton size on the study of the chiral magnetic effect in proton-nucleus collisions
Abstract
High energy proton-nucleus (pA) collisions provide an important constraint on the study of the chiral magnetic effect in QCD matter. Naively, in pA collisions one expects no correlation between the orientation of event plane as reconstructed from the azimuthal distribution of produced hadrons and the orientation of magnetic field. If this is the case, any charge-dependent hadron correlations can only result from the background. Nevertheless, in this paper we point out that in high multiplicity pA collisions a correlation between the magnetic field and the event plane can appear. This is because triggering on the high hadron multiplicity amounts to selecting Fock components of the incident proton with a large number of partons that are expected to have a transverse size much larger than the average proton size. We introduce the effect of the fluctuating proton size in the Monte Carlo Glauber model and evaluate the resulting correlation between the magnetic field and the second-order event plane in both pA and nucleus-nucleus (AA) collisions. The fluctuating proton size is found to result in a significant correlation between magnetic field and the event plane in pA collisions, even though the magnitude of the correlation is still much smaller than in AAmore »
- Authors:
-
- Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Rice Univ., Houston, TX (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1439312
- Alternate Identifier(s):
- OSTI ID: 1420198
- Report Number(s):
- BNL-205707-2018-JAAM
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US1900600
- Grant/Contract Number:
- SC0012704; FG-88ER40388; AC02-98CH10886; SC0012185
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 97; Journal Issue: 2; 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
Kharzeev, Dmitri, Tu, Zhoudunming, Zhang, Aobo, and Li, Wei. Effect of the fluctuating proton size on the study of the chiral magnetic effect in proton-nucleus collisions. United States: N. p., 2018.
Web. doi:10.1103/PhysRevC.97.024905.
Kharzeev, Dmitri, Tu, Zhoudunming, Zhang, Aobo, & Li, Wei. Effect of the fluctuating proton size on the study of the chiral magnetic effect in proton-nucleus collisions. United States. https://doi.org/10.1103/PhysRevC.97.024905
Kharzeev, Dmitri, Tu, Zhoudunming, Zhang, Aobo, and Li, Wei. Mon .
"Effect of the fluctuating proton size on the study of the chiral magnetic effect in proton-nucleus collisions". United States. https://doi.org/10.1103/PhysRevC.97.024905. https://www.osti.gov/servlets/purl/1439312.
@article{osti_1439312,
title = {Effect of the fluctuating proton size on the study of the chiral magnetic effect in proton-nucleus collisions},
author = {Kharzeev, Dmitri and Tu, Zhoudunming and Zhang, Aobo and Li, Wei},
abstractNote = {High energy proton-nucleus (pA) collisions provide an important constraint on the study of the chiral magnetic effect in QCD matter. Naively, in pA collisions one expects no correlation between the orientation of event plane as reconstructed from the azimuthal distribution of produced hadrons and the orientation of magnetic field. If this is the case, any charge-dependent hadron correlations can only result from the background. Nevertheless, in this paper we point out that in high multiplicity pA collisions a correlation between the magnetic field and the event plane can appear. This is because triggering on the high hadron multiplicity amounts to selecting Fock components of the incident proton with a large number of partons that are expected to have a transverse size much larger than the average proton size. We introduce the effect of the fluctuating proton size in the Monte Carlo Glauber model and evaluate the resulting correlation between the magnetic field and the second-order event plane in both pA and nucleus-nucleus (AA) collisions. The fluctuating proton size is found to result in a significant correlation between magnetic field and the event plane in pA collisions, even though the magnitude of the correlation is still much smaller than in AA collisions. Here, this result opens a possibility of studying the chiral magnetic effect in small systems.},
doi = {10.1103/PhysRevC.97.024905},
journal = {Physical Review C},
number = 2,
volume = 97,
place = {United States},
year = {Mon Feb 12 00:00:00 EST 2018},
month = {Mon Feb 12 00:00:00 EST 2018}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
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Figures / Tables found in this record: