The Preliminary Result from ($K^0_s\pi^{\pm}$) Spectra in p+a Reaction at 10 Gev/C

TL;DR

This study analyzes $K^0_s o ext{pion}$ spectra from p+A collisions at 10 GeV/c to identify scalar mesons, revealing resonant structures including a known $K^*$ resonance and potential signals of $ ext{kappa}(800)$.

Contribution

First analysis of $K^0_s o ext{pion}$ spectra in p+A reactions at 10 GeV/c showing resonant structures, including known and potential new scalar mesons.

Findings

Resonant peaks at 720, 780, and 890 MeV/$c^2$ in $K^0_s o ext{pion}$ spectra.

Identification of the 890 MeV/$c^2$ peak as the known $K^*$ resonance.

Observation of structures possibly indicating the $ ext{kappa}(800)$ meson.

Abstract

The experimental data from 2m propane bubble chamber have been analyzed to search of scalar meson $\kappa$(800) in $K^0_s\pi^{\pm}$ spectra for the reaction p+A at 10 GeV/c. The $K^0_s\pi^{\pm}$ invariant mass spectra has shown similarly resonant structures with $M_{K^0_s\pi}$=720,780 and 890 MeV/$c^2$. The M(890) peak is identified as the well known resonance $K^*$ from PDG.