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

PHENIX Collaboration

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

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 low pT 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.

Original languageEnglish
Article number064901
JournalPhysical Review C
Volume94
Issue number6
DOIs
Publication statusPublished - 2016 Dec 6

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Azimuthally anisotropic emission of low-momentum direct photons in Au + Au collisions at sNN =200 GeV'. Together they form a unique fingerprint.

Cite this