Strange Multibaryon States with \Lambda Hyperon Systems in pa Collision at 10 Gev/c

TL;DR

This paper reports the analysis of experimental data from a propane bubble chamber at 10 GeV/c, revealing potential exotic multibaryon states including light and heavy dibaryons with strange quark content.

Contribution

It presents new experimental evidence and interpretations of exotic baryon states and dibaryons in proton-propane collisions at 10 GeV/c, including possible identification of previously unobserved states.

Findings

Evidence for peculiarities in effective mass spectra of $\Lambda \pi^+$, $\Lambda p$, and $\Lambda p p$ subsystems.

Observation of events interpreted as S=-2 $H^0$ states, both light and heavy.

Detection of a new heavy $H^+(2488)$ dibaryon candidate.

Abstract

Experimental data from the 2m propane bubble chamber have been analyzed for exotic baryon states search. A number of peculiarities were found in the effective mass spectra of: $\Lambda \pi^+$($\Sigma^{*+}$(1382),PDG), $\Lambda p$ and $\Lambda p p$ subsystems. A few events detected on the photographs of the propane bubble chamber exposed to a 10 GeV/c proton beam, were interpreted as S=-2 $H^0$ light($<M_{(\Lambda \Lambda)}$) and heavy $H^{0,+}$. New event, detected on the photographs of the propane bubble chamber was interpreted as heavy $H^+(2488)$ dibaryon by weak decay channels of $K^-pp$ or $ \Sigma^+ p\pi^-$.