2016年12月
sNN=200GeVでの金+金衝突における低運動量直接生成光子の異方的放出の測定
Physical Review C
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- 巻
- 94
- 号
- 6
- 開始ページ
- 064901\_1
- 終了ページ
- 064901\_14
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1103/PhysRevC.94.064901
- 出版者・発行元
- American Physical Society
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 < p< 4.0 GeV/c. At low p_T the second-order coefficients, v_2, are similar to the ones observed in hadrons. Third-order coefficients, v_3, are nonzero and almost independent of centrality. These new results on v_2 and v_3, 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.著者所属: 日本原子力研究開発機構(JAEA)
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevC.94.064901
- ISSN : 2469-9985
- eISSN : 2469-9993
- CiNii Articles ID : 120006502101
- identifiers.cinii_nr_id : 9000397949200
- Web of Science ID : WOS:000389504300004