$K^{\ast }(892{)}^0$ meson production in inelastic p+p interactions at 158 GeV/$c$ beam momentum measured by NA61/SHINE at the CERN SPS

Abstract

The measurement of $K^{\ast }(892{)}^0$ resonance production via its $K^{+}{\pi }^{-}$ decay mode in inelastic p+p collisions at beam momentum 158 GeV/$c$ ($\sqrt{s_{NN}}=17.3$ GeV) is presented. The data were recorded by the NA61/SHINE hadron spectrometer at the CERN Super Proton Synchrotron. The \textit{template} method was used to extract the $K^{\ast }(892{)}^0$ signal and double differential transverse momentum and rapidity spectra were obtained. The full phase-space mean multiplicity of $K^{\ast }(892{)}^0$ mesons was found to be $(78.44\pm 0.38(\mathrm{stat})\pm 6.0(\mathrm{sys}))\cdot 10^{-3}$. The NA61/SHINE results are compared with the EPOS1.99 and Hadron Resonance Gas models as well as with world data from p+p and nucleus-nucleus collisions.

arXiv commentversion published in Eur. Phys. J. C

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• Particle yields in pp interactions at $\sqrt{s}=17.3$ GeV interpreted in the statistical hadronization model
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• Measurements of $\Xi {\left(1530\right)}^0$ and $\overline{\Xi }{\left(1530\right)}^0$ production in proton-proton interactions at $\sqrt{s_{NN}}$ = 17.3 GeV in the NA61/SHINE experiment