论文标题
使用半包含$γ_ {\ text {dir}} $+喷气和$π^{0} $ p $+$+$ p $+$ p $+$ p $+au+au collision
Measurement of medium-induced modification of jet yield and acoplanarity using semi-inclusive $γ_{\text{dir}}$+jet and $π^{0}$+jet distributions in $p$+$p$ and central Au+Au collisions at $\sqrt{s_{NN}} = 200$ GeV by STAR
论文作者
论文摘要
星星的合作介绍了从高横向能量（$ e _ {\ text {t}} $）中后退电荷喷气机的半分布的测量，直接光子和$π^{0} $ tiggers $ p $+$ p $+$ p $和中央au+au collisions in $ \ sqrt $ p $ p $使用抗$ k _ {\ text {t}} $算法从带电的粒子从带电的粒子重建的喷气机，带JET分辨率参数$ r = 0.2 $和0.5。使用混合事件技术纠正中央AU+AU碰撞中的大型不相关背景。这使得延伸至低横向动量和大型$ r $具有良好控制的系统不确定性的喷气尺寸。我们介绍了$π^{0} $+jet的抑制作用，射流增长和浮力的抑制作用的依赖性的测量值（$ e _ {\ text {t}}}^{\ text {trig}} $之间的$ 9-20 $ gev。
The STAR collaboration presents measurements of semi-inclusive distributions of charged jets recoiling from high transverse energy ($E_{\text{T}}$) direct photon and $π^{0}$ triggers in $p$+$p$ and central Au+Au collisions at $\sqrt{s_{\text{NN}}} = 200$ GeV. Jets are reconstructed from charged particles using the anti-$k_{\text{T}}$ algorithm with jet resolution parameters $R = 0.2$ and 0.5. The large uncorrelated background in central Au+Au collisions is corrected using a mixed-event technique. This enables a jet measurement extending to low transverse momentum and large $R$ with well-controlled systematic uncertainties. We present measurements of the jet $R$ dependence of suppression, intra-jet broadening, and acoplanarity of $π^{0}$+jet and $γ_{\text{dir}}$+jet for trigger $E_{\text{T}}$ ($E_{\text{T}}^{\text{trig}}$) between $9 - 20$ GeV.
