膨胀QGP的热双轻子产生(英文)

Thermal Dilepton Production in the Expanding QGP

摘要: 研究了QGP中次级热双轻子的产生。在RHIC能区，次级热双轻子的产生在低质量范围0.2 GeV<M<0.8 GeV内加强了热双轻子谱。次级热双轻子产生机制能够较好地解释PHENIX Au-Au 200AGeV碰撞实验的双轻子增强现象。对于LHC能区的Pb-Pb 5.5ATeV碰撞，理论计算结果表明，在低质量区域双轻子增强现象会更加明显，增强区域在1.0 GeV<M<2.5 GeV范围内。The secondary thermal dileptons produced from the quark-gluon plasma are investigated. The secondary thermal dileptons produced at RHIC energy were concentrated in the low mass region of 0.2 GeV

Abstract: The secondary thermal dileptons produced from the quarkgluon plasma are investigated. The secondary thermal dileptons produced at RHIC energy were concentrated in the low mass region of 0.2 GeV<M<0.8 GeV. The mechanism of the secondary thermal dileptons could be properly explained the enhancement of the dilepton yield in PHENIX experiments for Au-Au 200 AGeV collisions. For Pb-Pb 5.5 ATeV collisions at LHC, the enhancement is more evident in the low mass region of 0.3 GeV