Study of narrow baryon resonance decaying into $K^0_s p$ in $pA$-interactions at $70 GeV/c$ with SVD-2

TL;DR

This study reports the observation of a narrow baryon resonance at approximately 1523 MeV/c^2 in proton-nucleus interactions at 70 GeV, using the SVD-2 detector, indicating potential new baryonic states.

Contribution

First observation of a narrow baryon resonance at 1523 MeV/c^2 in pA interactions at 70 GeV with independent phase space analyses.

Findings

Resonance mass measured at 1523 MeV/c^2

Resonance observed in two independent data samples

Results support existence of a new baryonic state

Abstract

The inclusive reaction $p A \to pK^0_s + X$ was studied at IHEP accelerator with $70 GeV$ proton beam using SVD-2 detector. Two different samples of $K^0_s$, statistically independent and belonging to different phase space regions were used in the analyses and a narrow baryon resonance with the mass $M=1523\pm 2(stat.)\pm 3(syst.) MeV/c^2$ was observed in both samples of the data