2005/09/23 by SVD Collaboration
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0509033
7 pages, 11 figures, author's list corrected
arxiv created 2005/10/17 · arxiv updated 2012/08/27
The inclusive reaction p A → pK0s + X was studied at IHEP accelerator with 70 GeV proton beam using SVD-2 detector. Two different samples of K0s, statistically independent and belonging to different phase space regions were used in the analyses and a narrow baryon resonance with the mass M=1523± 2(stat.)± 3(syst.) MeV/c2 was observed in both samples of the data. The statistical significance was estimated to be of 8.0 σ (392 signal over 1990 background events). Using the part of events reconstructed with better accuracy the width of resonance was estimated to be Γ< 14 MeV/c2 at 95% C.L.