K_S⁰ meson production in inelastic p+p interactions at 31, 40 and 80 GeV/c beam momentum measured by NA61/SHINE at the CERN SPS

2024/02/26 by N. Abgrall, H. Adhikary, Abgrall, N. +255
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2402.17025

openalex publication_date 2024/02/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Measurements of K_S⁰ meson production via its π⁺ π^- decay mode in inelastic p+p interactions at incident projectile momenta of 31, 40 and 80 GeV/c (√s_NN=7.7, 8.8 and 12.3 GeV, respectively) are presented. The data were recorded by the NA61/SHINE spectrometer at the CERN Super Proton Synchrotron. Double-differential distributions were obtained in transverse momentum and rapidity. The mean multiplicities of K_S⁰ mesons were determined to be (5.95 ± 0.19 (stat) ± 0.22 (sys)) × 10^-2 at 31 GeV/c, (7.61 ± 0.13 (stat) ± 0.31 (sys)) × 10^-2 at 40 GeV/c and (11.58 ± 0.12 (stat) ± 0.37 (sys)) × 10^-2 at 80 GeV/c. The results on K⁰_S production are compared with model calculations (Epos1.99, SMASH 2.0 and PHSD) as well as with published data from other experiments.

Related

• Measurement of ϕ meson production in p+p interactions at 40, 80 and 158 GeV/c with the NA61/SHINE spectrometer at the CERN SPS
• K*(892)⁰ production in p+p interactions at 158 GeV/c from NA61/SHINE
• K^*(892)⁰ production in p+p interactions from NA61/SHINE
• Measurements of K⁰_\textrmS, Λ and Λ production in 120 GeV/c p + C interactions
• Spectra and mean multiplicities of π^- in central ⁴⁰Ar+⁴⁵Sc collisions at 13A, 19A, 30A, 40A, 75A and 150A GeV/c beam momenta measured by the NA61/SHINE spectrometer at the CERN SPS