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arXiv 1505.08066hep-ph
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$pp$碰撞中已识别强子的$p_{T}$谱的标度行为

Scaling behaviours of the $p_{T}$ spectra for identified hadrons in $pp$ collisions

W. C. Zhang

摘要:

我们扩展的标度行为中观察到的包容性带电强子横动量($p_{T}$)分布的质子-质子($pp$)碰撞中产生的π介子,K介子和质子的$p_{T}$光谱与质心能量($\sqrt{s}$)在0.9,2.76和7 TeV。当对π介子、K介子或质子$p_{T}$谱进行线性变换($p_{T} \rightarrow p_{T}/K$)时,就会出现这种标度行为。缩放参数$K$取决于$\sqrt{s}$,并由一种新的方法确定,即品质因数方法,该方法不依赖于缩放函数的形状。我们认为π介子、K介子和质子起源于弦重叠形成的不同分布的团簇,这些粒子$p_{T}$谱的标度行为可以同时用色弦逾渗模型定量地理解.

英文摘要:

We extend the scaling behaviour observed in the inclusive charged hadron transverse momentum ($p_{T}$) distributions to the $p_{T}$ spectra of pions, kaons and protons produced in proton-proton ($pp$) collisions with center of mass energies ($\sqrt{s}$ ) at 0.9, 2.76 and 7 TeV. This scaling behaviour arises when a linear transformation, $p_{T} \rightarrow p_{T}/K$, is applied on the pion, kaon or proton $p_{T}$ spectra. The scaling parameter $K$ depends on $\sqrt{s}$ and is determined by a new method, the quality factor method, which does not rely on the shape of the scaling function. We argue that the pions, kaons and protons originate from different distributions of clusters which are formed by strings overlapping, and the scaling behaviours of these identified particles $p_{T}$ spectra could be understood with the colour string percolation model in a quantitative way simultaneously.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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