标题： 直接光子在s_(NN)**(1/2)=200GeV的d+Au碰撞中与STAR 显示英文标题

标题： Direct photons in d+Au collisions at s_(NN)**(1/2)=200GeV with STAR

摘要： 正在进行的分析结果展示了在RHIC的STAR实验中，s_(NN)=200GeV的氘核-金碰撞中直接光子的产生。在中间快速度区域0<y<1附近观察到直接光子的显著过量，并发现与包括碎片化光子贡献在内的次领头阶pQCD计算一致。 显示英文摘要

摘要： Results are presented of an ongoing analysis of direct photon production in s_(NN)=200GeV deuteron-gold collisions with the STAR experiment at RHIC. A significant excess of direct photons is observed near mid-rapidity 0<y<1 and found to be consistent with next-to-leading order pQCD calculations including the contribution from fragmentation photons.