J-PARC P02 project:"THE Study of Exotic Multiquark States in Systems with $\Lambda $-Hyperons, $K^0_S $-Mesons and $\gamma$ - Quanta

TL;DR

This paper discusses the development and application of a high-precision propane bubble chamber detector at J-PARC for studying exotic multi-strange multiquark states involving hyperons and mesons, aiming to improve detection capabilities and explore new exotic states.

Contribution

It introduces a modernized 4π detector system using digital photographic methods for high-resolution detection of multi-strange events and complex decay modes, enhancing the study of exotic multiquark states.

Findings

Successful detection of known hyperon resonances like Σ0 and Σ*(1385).

High acceptance of beam area for Λ hyperons in p+C reactions at 10 GeV/c.

Potential to discover new exotic multiquark states with improved statistics.

Abstract

The designed 2m propane bubble chambers(PBC) with modern power technologies for PC and high precision digital photographic methods is a unique multi-propose, competitive capable and higher-informative 4$\pi$ detector for study of exotic multi-strange events with $V^0$($\Lambda,K^0_s$ and $\gamma$) particles, light hyper-nucleus, ($V^0, V^0$) interactions and other correlations (P02 J-PARC LOI). First from all of unbeatable privilege for PBC are registration of multi-vertex or complex decay modes(with 10-50$\mu$m space resolution), where is included of the beam area too. The acceptance of beam area for detectors is crucial important for $\Lambda$ hyperon physics, because more than 70% from $\Lambda$ hyperons are emitted in the beam area with azimuth $\beta$ or polar angles $< 15^0$ in p+C reaction at 10 GeV/c. The observed well-known resonances $\Sigma^{0}$, $\Sigma^{*\pm}$(1385) and $K^{*\pm}$(892) from PDG are good tests of this method. The subject of proposed P02 project allow to explore of multi-strangeness in hadronic systems with $V^0$ particles what are also included as P05,P07,P18, p22 and p027 approved experiments by a missing mass method at J-PARC. New developed research complexes NUCLATRON-M at JINR and J-PARC at JAEA(KEK) on base of progress in digital technology for BC experimental method allow to obtain of a necessary statistics in reasonable time, what inspire the optimism for establish exotic states with $\Lambda$ and $K^0_s$ particles, which were observed more than 30 year historical periods from different old experiments with a poor statistics. Only with high statistics or from many similarly old photographs without new necessary acceptance, resolution and methods analysis there will not possible to obtain of new information about these objects.