论文标题
$ \ sqrt {s_ \ textrm {nn}} $ = 200 GEV的AU+AU冲突中的包容性喷气生产的测量
Measurement of inclusive jet production in Au+Au collisions at $\sqrt{s_\textrm{NN}}$ = 200 GeV by the STAR experiment
论文作者
论文摘要
该星团的合作报告了中央（0-10％）和外围（60-80％）au+au碰撞的测量值$ \ sqrt {s_ \ textrm {nn}} $ = 200 GEV，使用带电的固定组和完全固定的喷气机。使用抗$ k_ \ textrm {t} $算法进行分辨率参数$ r $ r $ = 0.2、0.3和0.4进行喷气重建。相对于外围Au+Au碰撞，使用Pythia 6模拟，观察到中央AU+AU碰撞的带电粒子喷气机的屈服抑制。抑制的大小与在LHC上测得的抑制作用相似，可以通过理论计算来描述。基于$ r $不同的喷射光谱的比较，没有观察到中等诱发的喷射拓宽的证据。当表示为与能量损失相对应的射流横向动量移位时，屈服抑制在大小上与基于直接光子和强子触发器的RHIC的巧合测量保持一致。在LHC处观察到较大的能量损失的指示。
The STAR Collaboration reports the measurement of inclusive jet production in central (0-10%) and peripheral (60-80%) Au+Au collisions at $\sqrt{s_\textrm{NN}}$ = 200 GeV, using both charged-particle and fully-reconstructed jets. Jet reconstruction is carried out using the anti-$k_\textrm{T}$ algorithm with resolution parameters $R$ = 0.2, 0.3 and 0.4. Yield suppression of charged-particle jets is observed for central Au+Au collisions relative to both peripheral Au+Au collisions and a vacuum baseline utilizing PYTHIA 6 simulations. The magnitude of the suppression is similar to that measured at the LHC and can be described by theoretical calculations. No evidence of significant medium-induced jet broadening is observed, based on comparison of jet spectra at varying $R$. The yield suppression, when expressed as the jet transverse momentum shift corresponding to energy loss, is consistent in magnitude with coincidence measurements at RHIC based on direct-photon and hadron triggers. There is an indication of larger energy loss observed at the LHC.
