论文标题
$ p_t $ p_t $ collisions $ \ sqrt {s} $ = 0.9和2.36 TEV
Pseudorapidity dependence of the $p_T$ spectra of charged hadrons in $pp$ collisions at $\sqrt{s}$ = 0.9 and 2.36 TeV
论文作者
论文摘要
我们报告了不同的蒙特卡洛事件发生器的预测，包括Hijing，Pythia和QGSJetii，与由CMS协作在Proton-Proton（$ pp $）碰撞的CMS协作中测量的实验数据相比，在质量中心的Energy $ \ sqrt $ \ sqrt {s} $ = 0.9 $ = 0.9和2.36 TEV中。 CMS实验性横向动量（$ p_t $或$ p _ {\ perp} $）的充电Hadron的光谱是针对伪型范围0 $ \ le $ $ $ $ $ $ $ $ $ $ $ $ $ \ $ $ \ $ $ \ $ 2.4 $ $ \ $ $ $ \ $ $ $ $ $ $ = 0.2 $ \ lvert $$η$$ \ rvert $ $ <$ <$ <$ 2.4（$ p_t $从0.1到4 GEV/$ C $）。 Pythia在$ P_T $范围的大部分时间内复制了$ p_t $ spectra。在$ |η| <$ 2.4的情况下，它比hijing和qgsjetii的结果更好，这可以在有限的$ p_t $范围内复制光谱。此外，为了分析通过CMS协作测量的充电Hadron的$ P_T $光谱，我们使用了三个组件函数（从玻尔兹曼分布构成）和$ q $ dual功能（从$ q $ $ dual统计量）（从$ q $ dual统计量）来提取与Hadronic Matter of Hedronic Matter的Bult terporties相关的参数值相关的参数值。我们还在模型预测上应用了两个分析函数。与QGSJETII模型相比，从Hijing和Pythia模型中提取的函数提取的值更接近实验数据。尽管这些型号可以在$ p_t $范围的某些电荷粒子中重现所有带电粒子的$ p_t $ spectra，但它们都无法在整个$ p_t $范围内以及在所有伪造区域中重现分布。
We report the predictions of different Monte Carlo event generators including HIJING, Pythia, and QGSJETII in comparison with the experimental data measured by the CMS Collaboration at CERN in proton-proton ($pp$) collisions at center-of-mass energy $\sqrt{s}$ = 0.9 and 2.36 TeV. The CMS experimental transverse momentum ($p_T$ or $p_{\perp}$) spectra of charged hadrons were measured for pseudorapidity range 0 $\le$ $η$ $\le$ 2.4 with bin width of $η$ = 0.2 (for $p_T$ from 0.1 to 2 GeV/$c$) and a single bin of $η$ for $\lvert$$η$$\rvert$ $<$ 2.4 (for $p_T$ from 0.1 to 4 GeV/$c$). Pythia reproduced the $p_T$ spectra with reasonable agreement for most of the $p_T$ range. It depicts better results in the case of the $|η|<$ 2.4 than HIJING and QGSJETII which could reproduce the spectra in a limited $p_T$ range. Furthermore, to analyze the $p_T$ spectra of charged hadrons measured by the CMS Collaboration, we used a three component function (structured from the Boltzmann distribution) and the $q$-dual function (from the $q$-dual statistics) to extract parameter values relevant for the study of bulk properties of hadronic matter at high energy. We have also applied the two analytic functions over the model predictions. The values extracted by the functions from the HIJING and Pythia models are closer to the experimental data than the QGSJETII model. Although the models could reproduce the $p_T$ spectra of all charged particles in some of the $p_T$ range but none of them could reproduce the distributions over the entire $p_T$ range and in all the pseudorapidity regions.
