Testing the impact of electromagnetic fields on the directed flow of constituent quarks in heavy-ion collisions

Sheikh, Ashik Ikbal; Keane, Declan; Tribedy, Prithwish

doi:10.1103/physrevc.105.014912

Title: Testing the impact of electromagnetic fields on the directed flow of constituent quarks in heavy-ion collisions

Journal Article · 19 January 2022 · Physical Review C

DOI: https://doi.org/10.1103/physrevc.105.014912 · OSTI ID:1841122

^[1];

^[2]

Kent State Univ., Kent, OH (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States)

It has been proposed that strong electromagnetic fields produced in the early stages of heavy-ion collisions can lead to splitting of the rapidity-odd directed flow of positive and negative hadrons. For light hadrons, the interpretation of such measurements is complicated by the low magnitude of directed flow as well as by ambiguities arising from transported quarks. To overcome these complications, we propose measurements using only hadrons carrying produced quarks (u¯, d¯, s s¯ ). Here, we discuss how to identify the kinematics where such hadrons are produced via the coalescence mechanism and therefore their flow is the sum of the flow of their constituent quarks. With this sum rule verified for certain combinations of hadrons, the expected systematic violation of this rule with increasing electric charge can be measured, which could be a consequence of the electromagnetic fields produced in the collisions. Our approach can be tested with the high statistics data from Phase II of the Beam Energy Scan program at the Relativistic Heavy Ion Collider.

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

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0012704

OSTI ID:: 1841122

Report Number(s):: BNL--222621-2022-JAAM

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 105; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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