论文标题
在$ \ sqrt {s} $ = 7和$ \ sqrt {s} $ = 13 tev中的PP碰撞中生产光味的HADRON
Production of light-flavor hadrons in pp collisions at $\sqrt{s}$ = 7 and $\sqrt{s}$ = 13 TeV
论文作者
论文摘要
$π^{\ pm} $的产生，$ \ rm {k}^{\ pm} $，$ \ rm {k}^{0} _ {s} $，$ \ rm {k} $ξ^{ - } $，$ω^{ - } $，它们的抗粒子在非弹性质子 - 蛋白质（PP）碰撞中测量$ \ sqrt {s} $ = 13 tev的质量中心（$ | y | <0.5 $）的质量（$ | <0.5 $）作为跨度动量（$ p p _） Cern LHC的检测器。此外，单粒子$ p _ {\ rm {t}} $分布的$ \ rm {k}^{0} _ {0} _ {s} $，$λ$，$ \ \ \ \ \\Overlineλ$ in弹性pp碰撞at $ \ sqrt {s} $ = 7 tev in te t tev in the te t tev in tereptime。 $ p _ {\ rm {t}} $分布在横向动量范围内以中等范围进行研究$ 0 \ leq p _ {\ rm {t}} \ leq20 $ gev/$ gev/$ c $，具体取决于粒子物种。 $ p _ {\ rm {t}} $光谱，集成产量和颗粒产量比是碰撞能量的函数，与较低$ \ sqrt {s} $的测量结果进行了比较，并与各种通用QCD QCD QCD QCD QCD启发的Monte Carlo Carlo Carlo Models相比。观察到碰撞能量增加，在高$ p _ {\ rm {t}} $上的光谱的硬化被观察到碰撞能量的增加，这对于所研究的所有粒子物种都相似。还研究了横向质量和$ x _ {\ rm {t}} \ equiv2p _ {\ rm {t}}}/\ sqrt {s} $缩放属性生产的缩放属性。随着碰撞能量从$ \ sqrt {s} $ = 7到13 tev，非标准化与触发的单晶型载体的产率随着$ \ sqrt {s} $的函数的函数，而多震子的比率则保持恒定。 $ p _ {\ rm {t}} $ - $π^{\ pm} $，$ \ rm {k}^{\ pm} $和$ \ rm {p} $（$ \ + edline Lineelline {\ rm {p} $）的proct prowit prot prott prott prott prott prott prott prott protit prott protity的pertuct protty protition prowity的perculation prowts protit protitials protit protitials prowitiation，$ p _ {\ rm {\ rm {\ rm { $π^{\ pm} $和$ \ rm {p} $（$ \ overline {\ rm {p}} $）的交叉部分在高$ p _ {\ rm {t}} $上。
The production of $π^{\pm}$, $\rm{K}^{\pm}$, $\rm{K}^{0}_{S}$, $\rm{K}^{*}(892)^{0}$, $\rm{p}$, $ϕ(1020)$, $Λ$, $Ξ^{-}$, $Ω^{-}$, and their antiparticles was measured in inelastic proton-proton (pp) collisions at a center-of-mass energy of $\sqrt{s}$ = 13 TeV at midrapidity ($|y|<0.5$) as a function of transverse momentum ($p_{\rm{T}}$) using the ALICE detector at the CERN LHC. Furthermore, the single-particle $p_{\rm{T}}$ distributions of $\rm{K}^{0}_{S}$, $Λ$, and $\overlineΛ$ in inelastic pp collisions at $\sqrt{s}$ = 7 TeV are reported here for the first time. The $p_{\rm{T}}$ distributions are studied at midrapidity within the transverse momentum range $0\leq p_{\rm{T}}\leq20$ GeV/$c$, depending on the particle species. The $p_{\rm{T}}$ spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower $\sqrt{s}$ and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high $p_{\rm{T}}$ with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and $x_{\rm{T}}\equiv2p_{\rm{T}}/\sqrt{s}$ scaling properties of hadron production are also studied. As the collision energy increases from $\sqrt{s}$ = 7 to 13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of $\sqrt{s}$, while ratios for multi-strange hadrons indicate enhancements. The $p_{\rm{T}}$-differential cross sections of $π^{\pm}$, $\rm{K}^{\pm}$ and $\rm{p}$ ($\overline{\rm{p}}$) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for $π^{\pm}$ and $\rm{p}$ ($\overline{\rm{p}}$) at high $p_{\rm{T}}$.
