Production of light-flavor hadrons in pp collisions at $\sqrt{s}~=~7\text { and }\sqrt{s} = 13 \, \text { TeV} $

The production of <span class="mathjax-tex">\(\pi ^{\pm }\)</span>, <span class="mathjax-tex">\(\mathrm{K}^{\pm }\)</span>, <span class="mathjax-tex">\(\mathrm{K}^{0}_{S}\)</span>, <span class="mathjax-tex">\(\mathrm{K}^{*}(892)^{0}\)</span>, <span class="mathjax-tex">\(\mathrm{p}\)</span>, <span class="mathjax-tex">\(\phi (1020)\)</span>, <span class="mathjax-tex">\(\Lambda \)</span>, <span class="mathjax-tex">\(\Xi ^{-}\)</span>, <span class="mathjax-tex">\(\Omega ^{-}\)</span>, and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of <span class="mathjax-tex">\(\sqrt{s}\)</span> = 13 TeV at midrapidity (<span class="mathjax-tex">\(|y|&lt;0.5\)</span>) as a function of transverse momentum (<span class="mathjax-tex">\(p_{\mathrm{T}}\)</span>) using the ALICE detector at the CERN LHC. Furthermore, the single-particle <span class="mathjax-tex">\(p_{\mathrm{T}}\)</span> distributions of <span class="mathjax-tex">\(\mathrm{K}^{0}_{S}\)</span>, <span class="mathjax-tex">\(\Lambda \)</span>, and <span class="mathjax-tex">\(\overline{\Lambda }\)</span> in inelastic pp collisions at <span class="mathjax-tex">\(\sqrt{s} = 7\)</span> TeV are reported here for the first time. The <span class="mathjax-tex">\(p_{\mathrm{T}}\)</span> distributions are studied at midrapidity within the transverse momentum range <span class="mathjax-tex">\(0\le p_{\mathrm{T}}\le 20\)</span> GeV/<i>c</i>, depending on the particle species. The <span class="mathjax-tex">\(p_{\mathrm{T}}\)</span> spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower <span class="mathjax-tex">\(\sqrt{s}\)</span> and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high <span class="mathjax-tex">\(p_{\mathrm{T}}\)</span> with increasing collision energy is observed, which is similar for all particle species under study. The t. Authors: Acharya, S.; Adamová, D.; Adler, A.; Adolfsson, J.; Aggarwal, M. M.. DOE Contract: AC02-05CH11231; AC05-00OR22725. Subjects: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS