Production of light-flavor hadrons in pp collisions at √s=7 and √s=13 TeV
The production of $$\pi ^{\pm }$$, $$\mathrm{K}^{\pm }$$, $$\mathrm{K}^{0}_{S}$$, $$\mathrm{K}^{*}(892)^{0}$$, $$\mathrm{p}$$, $$\phi (1020)$$, $$\Lambda $$, $$\Xi ^{-}$$, $$\Omega ^{-}$$, and their antiparticles was measured in inelastic proton-proton (pp) collisions at a center-of-mass energy of $...
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| Hauptverfasser: | , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
24 March 2021
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| In: |
The European physical journal. C, Particles and fields
Year: 2021, Jahrgang: 81, Heft: 3, Pages: 1-41 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-020-08690-5 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-020-08690-5
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| Verfasserangaben: | ALICE Collaboration |
MARC
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| 245 | 1 | 0 | |a Production of light-flavor hadrons in pp collisions at √s=7 and √s=13 TeV |c ALICE Collaboration |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Production of light-flavor hadrons in pp collisions at square root = 7 and square root = 13 TeV |
| 264 | 1 | |c 24 March 2021 | |
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| 518 | |a ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, B. Windelband, A. Yuncu [und weitere] | ||
| 520 | |a The production of $$\pi ^{\pm }$$, $$\mathrm{K}^{\pm }$$, $$\mathrm{K}^{0}_{S}$$, $$\mathrm{K}^{*}(892)^{0}$$, $$\mathrm{p}$$, $$\phi (1020)$$, $$\Lambda $$, $$\Xi ^{-}$$, $$\Omega ^{-}$$, 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 ($$p_{\mathrm{T}}$$) using the ALICE detector at the CERN LHC. Furthermore, the single-particle $$p_{\mathrm{T}}$$distributions of $$\mathrm{K}^{0}_{S}$$, $$\Lambda $$, and $$\overline{\Lambda }$$in inelastic pp collisions at $$\sqrt{s} = 7$$ TeV are reported here for the first time. The $$p_{\mathrm{T}}$$distributions are studied at midrapidity within the transverse momentum range $$0\le p_{\mathrm{T}}\le 20$$GeV/c, depending on the particle species. The $$p_{\mathrm{T}}$$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 $$p_{\mathrm{T}}$$with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and $$x_{\mathrm{T}}\equiv 2p_{\mathrm{T}}/\sqrt{s}$$scaling properties of hadron production are also studied. As the collision energy increases from $$\sqrt{s}$$= 7-13 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 $$p_\mathrm{{T}}$$-differential cross sections of $$\pi ^{\pm }$$, $$\mathrm {K}^{\pm }$$and $$\mathrm {p}$$($$\overline{\mathrm{p}}$$) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for $$\pi ^{\pm }$$and $$\mathrm{p}$$($$\overline{\mathrm{p}}$$) at high $$p_\mathrm{{T}}$$. | ||
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