English

The Observation of Exotic Resonances for $\Lambda \gamma $,$\Lambda\pi^{\pm}$,$\Lambda \pi^+\pi^-$, $\Lambda p$, $\Lambda pp$ and $p \gamma$ Spectra in p + a Collision at 10 Gev/c

High Energy Physics - Experiment 2009-02-04 v2

Abstract

Strange multi-baryonic clusters are an exiting possibility to explore the properties of cold dense baryonic matter. Recent results on searches for exotic narrow resonances with Λ\Lambda hyperon subsystems are reviewed. The observation of Σ0\Sigma^0, Σ+\Sigma^{*+}(1385) and K±K^{*\pm}(892) well known resonances from PDG are a good tests of this method. The mean value of mass for Σ(1385)\Sigma^{*-}(1385) resonance is shifted till mass of 1370 MeV/c2c^2 and width is two times larger than same value from PDG. Such of behavior for width and mass of Σ(1385)\Sigma^{*-}(1385) resonance interpreted as extensive contribution from stopping ΞΛπ\Xi^-\to\Lambda\pi^- and medium effect with mass of Σ(1385)\Sigma^{*-}(1385) resonance.In (Λπ+π\Lambda\pi^+ \pi^-) spectrum there are observed enhancement signals from Λ(1600)\Lambda ^*(1600), Λ(1750)\Lambda ^*(1750) and Λ(1850)\Lambda ^*(1850) resonances. A number of significant signals were found in the effective mass spectra of: 1)Λγ\Lambda \gamma,pγp \gamma Λπ±\Lambda \pi^{\pm},Λππ\Lambda \pi \pi, Λp\Lambda p and Λpp\Lambda p p subsystems.

Keywords

Cite

@article{arxiv.0811.1273,
  title  = {The Observation of Exotic Resonances for $\Lambda \gamma $,$\Lambda\pi^{\pm}$,$\Lambda \pi^+\pi^-$, $\Lambda p$, $\Lambda pp$ and $p \gamma$ Spectra in p + a Collision at 10 Gev/c},
  author = {Aslanyan P. Zh},
  journal= {arXiv preprint arXiv:0811.1273},
  year   = {2009}
}

Comments

6 pages, 9 figures, Proc. LEAP/EXA-08 conferences,September 15-19, Wien

R2 v1 2026-06-21T11:39:32.293Z