The preliminary result from spectra of $K^0_s π^-$ in reaction p+propane at 10 GeV/c

Details The preliminary result from spectra of $K^0_s π^-$ in reaction p+propane at 10 GeV/c The preliminary result from spectra of $K^0_s π^-$ in reaction p+propane at 10 GeV/c

2006-04-29

arxiv.org/abs/hep-ex/0605002v2

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 4 figures, LVE and LPP seminar(JINR)

Scientific paper

The experimental data from 2m propane bubble chamber have been analyzed to search for scalar meson $\kappa(800)$ in a $K^0_s\pi$ decay mode for the reaction p+$C_3H_8$ at 10 GeV/c. The $K^0_s\pi^-$ invariant mass spectrum has shown resonant structures with $M_{K^0_s\pi^-}$=730, 900 and $\Gamma$=143, 48 MeV/$c^2$, respectively. The statistical significance are estimated to be of 14.2$\sigma$ and 4.2$\sigma$, respectively. The peak in M(900) is identified as reflection from the well known resonance with mass of 892 MeV/c$^2$.

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