论文标题
沉重离子的超外外碰撞中光子诱导的二重产生的方位角去相关
Azimuthal decorrelation for photon induced dijet production in ultra-peripheral collisions of heavy ions
论文作者
论文摘要
我们研究了超长重离子碰撞中的光子融合，研究了硫酸菌产生的方位角角度。使用等效的光子近似来得出夸克 - 易夸克对的影响参数依赖性横截面，并在软共线有效理论中计算了最终状态QCD辐射对方位角角度分布的贡献。我们在近代领先的对数精度下进行了方位角的大对数以及射流半径的QCD重新调整。最后，我们介绍了Dijet对方位角去相关的归一化差分截面，发现我们的结果与Atlas协作报告的测量结果一致。
We study the azimuthal angular decorrelation of the dijet production via photon fusion in ultra-peripheral heavy ion collisions. The impact parameter dependent cross section of quark-antiquark pairs production is derived using the equivalent photon approximation, and the contribution from final-state QCD radiations to the azimuthal angular distribution are calculated within Soft-Collinear Effective Theory. We carry out the QCD resummation of large logarithms of the azimuthal angle as well as the jet radius at next-to-leading logarithmic accuracy. In the end we present the normalized differential cross section for azimuthal decorrelation of the dijet pair and find that our results are consistent with the measurements reported by the ATLAS collaboration.
