Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at sNN=200 GeV

Adare, A.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Al-Bataineh, H.; Alexander, J.; Alfred, M.; Al-Ta'ani, H.; Angerami, A.; Aoki, K.; Apadula, N.; Aramaki, Y.; Asano, H.; Aschenauer, E. C.; Atomssa, E. T.; Averbeck, R.; Awes, T. C.; Azmoun, B.; Babintsev, V.; Bai, M.; Baksay, G.; Baksay, L.; Bandara, N. S.; Bannier, B.; Barish, K. N.; Bassalleck, B.; Basye, A. T.; Bathe, S.; Baublis, V.; Baumann, C.; Baumgart, S.; Bazilevsky, A.; Beaumier, M.; Beckman, S.; Belikov, S.; Belmont, R.; Bennett, R.; Berdnikov, A.; Berdnikov, Y.; Bickley, A. A.; Blau, D. S.; Bok, J. S.; Boyle, K.; Brooks, M. L.; Bryslawskyj, J.; Buesching, H.; Bumazhnov, V.; Bunce, G.; Butsyk, S.; Camacho, C. M.; Campbell, S.; Castera, P.; Chen, C. -H.; Chi, C. Y.; Chiu, M.; Choi, I. J.; Choi, J. B.; Choi, S.; Choudhury, R. K.; Christiansen, P.; Chujo, T.; Chung, P.; Chvala, O.; Cianciolo, V.; Citron, Z.; Cole, B. 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doi:10.1103/PhysRevC.94.064901

Title: Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at $\sqrt{s_{N N}} = 200$ GeV

Journal Article · Tue Dec 06 00:00:00 EST 2016 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.94.064901· OSTI ID:1341653

Adare, A.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Al-Bataineh, H.; Alexander, J.; Alfred, M.; Al-Ta'ani, H.; Angerami, A.; Aoki, K.; Apadula, N.; Aramaki, Y.; Asano, H.; Aschenauer, E. C.; Atomssa, E. T.; Averbeck, R.; Awes, T. C.; Azmoun, B. more »

The PHENIX experiment at the BNL Relativistic Heavy Ion Collider has measured second- and third-order Fourier coefficients of the azimuthal distributions of direct photons emitted at midrapidity in Au + Au collisions at √ sNN = 200 GeV for various collision centralities. Combining two different analysis techniques, results were obtained in the transverse momentum range of 0.4 < pT < 4.0 GeV/c. At lowpT the second-order coefficients, v2, are similar to the ones observed in hadrons. Third-order coefficients, v3, are nonzero and almost independent of centrality. These new results on v2 and v3, combined with previously published results on yields, are compared to model calculations that provide yields and asymmetries in the same framework. Those models are challenged to explain simultaneously the observed large yield and large azimuthal anisotropies.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Nuclear Science and Security Consortium; Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Contributing Organization:: PHENIX Collaboration

Grant/Contract Number:: SC0012704; NA0003180; AC02-05CH11231

OSTI ID:: 1341653

Alternate ID(s):: OSTI ID: 1334558; OSTI ID: 1407968; OSTI ID: 1423609

Report Number(s):: BNL-113377-2016-JA; TRN: US1701172

Journal Information:: Physical Review C, Vol. 94, Issue 6; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 68 works

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Benchmarking a nonequilibrium approach to photon emission in relativistic heavy-ion collisions Schäfer, Anna; Torres-Rincon, Juan M.; Rothermel, Jonas Physical Review D, Vol. 99, Issue 11 https://doi.org/10.1103/physrevd.99.114021	journal	June 2019
Magnetic field influence on the early time dynamics of heavy-ion collisions Greif, Moritz; Greiner, Carsten; Xu, Zhe arXiv https://doi.org/10.48550/arxiv.1704.06505	text	January 2017
Beam-energy and centrality dependence of direct-photon emission from ultra-relativistic heavy-ion collisions Adare, A.; Afanasiev, S.; Aidala, C. arXiv https://doi.org/10.48550/arxiv.1805.04084	text	January 2018
Benchmarking a Non-Equilibrium Approach to Photon Emission in Relativistic Heavy-Ion Collisions Schäfer, Anna; Torres-Rincon, Juan M.; Rothermel, Jonas arXiv https://doi.org/10.48550/arxiv.1902.07564	text	January 2019

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Collisions at

\sqrt{s_{N N}} = 200 GeV

Journal Article · Fri May 26 00:00:00 EDT 2017 · Physical Review Letters · OSTI ID:1341653

Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; +347 more

Measurement of long-range angular correlations and azimuthal anisotropies in high-multiplicity

p + Au

collisions at

\sqrt{s_{NN}} = 200

GeV

Journal Article · Fri Mar 24 00:00:00 EDT 2017 · Physical Review. C · OSTI ID:1341653

Aidala, C.; Akiba, Y.; Alfred, M.; +307 more

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
photon measurements
azimuthal
collisions
Relativistic Heavy Ion Collider

Title: Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at s N N = 200 GeV

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Title: Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at $\sqrt{s_{N N}} = 200$ GeV