English

$\rm{K}^{*}(\rm{892})^{0}$ and $\phi(1020)$ production at midrapidity in pp collisions at $\sqrt{s}$ = 8 TeV

Nuclear Experiment 2021-02-08 v2 High Energy Physics - Experiment

Abstract

The production of K(892)0\mathrm{K}^{*}(\mathrm{892})^{0} and ϕ(1020)\mathrm{\phi(1020)} in pp collisions at s\sqrt{s} = 8 TeV was measured using Run 1 data collected by the ALICE collaboration at the LHC. The pTp_{\rm{T}}-differential yields d2N^{\rm 2}N/dyydpTp_{\rm{T}} in the range 0<pT<200 < p_{\rm{T}} < 20 GeV/cc for K0\rm{K}^{*0} and 0.4<pT<160.4 < p_{\rm{T}} < 16 GeV/cc for ϕ\phi have been measured at midrapidity, y<0.5|y| < 0.5. Moreover, improved measurements of the K(892)0\rm{K}^{*}(892)^{0} and ϕ(1020)\phi(1020) at s=7\sqrt{s} = 7TeV are presented. The collision energy dependence of pTp_{\rm{T}} distributions, pTp_{\rm{T}}-integrated yields and particle ratios in inelastic pp collisions are examined. The results are also compared with different collision systems. The values of the particle ratios are found to be similar to those measured at other LHC energies. In pp collisions a hardening of the particle spectra is observed with increasing energy, but at the same time it is also observed that the relative particle abundances are independent of the collision energy. The pTp_{\rm{T}}-differential yields of K0\rm{K}^{*0} and ϕ\phi in pp collisions at s=8\sqrt{s} = 8 TeV are compared with the expectations of different Monte Carlo event generators.

Keywords

Cite

@article{arxiv.1910.14410,
  title  = {$\rm{K}^{*}(\rm{892})^{0}$ and $\phi(1020)$ production at midrapidity in pp collisions at $\sqrt{s}$ = 8 TeV},
  author = {ALICE Collaboration},
  journal= {arXiv preprint arXiv:1910.14410},
  year   = {2021}
}

Comments

22 pages, 7 captioned figures, 3 tables, authors from page 17, published, figures at http://alice-publications.web.cern.ch/node/5654