Exotic strange multibaryon states searches with $\Lambda$- hyperon and $K^0_s$- meson systems in p+A collisions at momentum 10 GeV/c

TL;DR

This paper reviews evidence for exotic strange multibaryon states in p+A collisions at 10 GeV/c, including resonance observations, width anomalies, and potential dibaryon detections, contributing to understanding strange multibaryon phenomena.

Contribution

It presents new experimental observations of strange multibaryon states, resonance widths, and dibaryon candidates in p+A collisions at 10 GeV/c, expanding knowledge of strange multibaryon systems.

Findings

Observation of well-known resonances $\Sigma^{*+}(1385)$ and $K^{*\pm}(892)$ in invariant mass spectra.

Width of $\Sigma^{*-}(1385)$ is twice the value listed in PDG.

Enhanced cross section for $\Xi^- o \Lambda \pi^-$ decay, 7-8 times larger than expected.

Abstract

Review for exotic strange multibaryon states were obseved in the effective mass spectra of: 1)$\Lambda \pi^+$, $\Lambda \pi^-$, $\Lambda p$, $\Lambda p p$, and $\Lambda K^0_S$, $K^0_S\pi^{\pm}$ and $K^0_Sp$ subsystems.The invariant mass of $\Lambda \pi^+$ and $K^0_S\pi^{\pm}$ spectra has observed well known $\Sigma^{*+}$(1385) and $K^{*\pm}$(892) resonances. The width of $\Sigma^{*-}(1385)$ for p+A reaction is two time larger than that presented in PDG. The cross section of $\Xi^-\to \Lambda \pi^-$ is 7-8 times larger than expected geometrical cross section in p+propane interaction. A few events detected on the photographs of the propane bubble chamber, were interpreted as S=-2 light and heavy $H^{0,+}$ dibaryons.