Scholars@Duke publication: Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC

Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC

Publication , Journal Article

Abdulhamid, MI; Aboona, BE; Adam, J; Adamczyk, L; Adams, JR; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Anderson, DM; Aschenauer, EC; Aslam, S ...

Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

September 10, 2023

Published version (DOI)

We report on new measurements of elliptic flow (v2) of electrons from heavy-flavor hadron decays at mid-rapidity (|y|<0.8) in Au+Au collisions at sNN = 27 and 54.4 GeV from the STAR experiment. Heavy-flavor decay electrons (e^HF) in Au+Au collisions at sNN = 54.4 GeV exhibit a non-zero v2 in the transverse momentum (pT) region of pT< 2 GeV/c with the magnitude comparable to that at sNN=200 GeV. The measured e^HF v2 at 54.4 GeV is also consistent with the expectation of their parent charm hadron v2 following number-of-constituent-quark scaling as other light and strange flavor hadrons at this energy. These suggest that charm quarks gain significant collectivity through the evolution of the QCD medium and may reach local thermal equilibrium in Au+Au collisions at sNN=54.4 GeV. The measured e^HF v2 in Au+Au collisions at sNN= 27 GeV is consistent with zero within large uncertainties. The energy dependence of v2 for different flavor particles (π,ϕ,D⁰/e^HF) shows an indication of quark mass hierarchy in reaching thermalization in high-energy nuclear collisions.

Duke Scholars

Author Seog Oh Physics

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2023.138071

ISSN

0370-2693

Publication Date

September 10, 2023

Volume

844

Related Subject Headings

Nuclear & Particles Physics
51 Physical sciences
49 Mathematical sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0201 Astronomical and Space Sciences
0105 Mathematical Physics

Citation

APA

Chicago

ICMJE

MLA

NLM

Abdulhamid, M. I., Aboona, B. E., Adam, J., Adamczyk, L., Adams, J. R., Aggarwal, I., … Huang, Y. (2023). Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 844. https://doi.org/10.1016/j.physletb.2023.138071

Abdulhamid, M. I., B. E. Aboona, J. Adam, L. Adamczyk, J. R. Adams, I. Aggarwal, M. M. Aggarwal, et al. “Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 844 (September 10, 2023). https://doi.org/10.1016/j.physletb.2023.138071.

Abdulhamid MI, Aboona BE, Adam J, Adamczyk L, Adams JR, Aggarwal I, et al. Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2023 Sep 10;844.

Abdulhamid, M. I., et al. “Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 844, Sept. 2023. Scopus, doi:10.1016/j.physletb.2023.138071.

Abdulhamid MI, Aboona BE, Adam J, Adamczyk L, Adams JR, Aggarwal I, Aggarwal MM, Ahammed Z, Anderson DM, Aschenauer EC, Aslam S, Atchison J, Bairathi V, Baker W, Ball Cap JG, Barish K, Bellwied R, Bhagat P, Bhasin A, Bhatta S, Bielcik J, Bielcikova J, Brandenburg JD, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Cebra D, Ceska J, Chakaberia I, Chaloupka P, Chan BK, Chang Z, Chatterjee A, Chen D, Chen J, Chen JH, Chen Z, Cheng J, Cheng Y, Choudhury S, Christie W, Chu X, Crawford HJ, Csanád M, Dale-Gau G, Das A, Daugherity M, Deppner IM, Dhamija A, Di Carlo L, Didenko L, Dixit P, Dong X, Drachenberg JL, Duckworth E, Dunlop JC, Engelage J, Eppley G, Esumi S, Evdokimov O, Ewigleben A, Eyser O, Fatemi R, Fazio S, Feng CJ, Feng Y, Finch E, Fisyak Y, Flor FA, Fu C, Gagliardi CA, Galatyuk T, Geurts F, Ghimire N, Gibson A, Gopal K, Gou X, Grosnick D, Gupta A, Guryn W, Hamed A, Han Y, Harabasz S, Harasty MD, Harris JW, Harrison-Smith H, He W, He XH, He Y, Herrmann N, Holub L, Hu C, Hu Q, Hu Y, Huang H, Huang HZ, Huang SL, Huang T, Huang X, Huang Y. Elliptic flow of heavy-flavor decay electrons in Au+Au collisions at sNN = 27 and 54.4 GeV at RHIC. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2023 Sep 10;844.

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2023.138071

ISSN

0370-2693

Publication Date

September 10, 2023

Volume

844

Related Subject Headings

Nuclear & Particles Physics
51 Physical sciences
49 Mathematical sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0201 Astronomical and Space Sciences
0105 Mathematical Physics