Search for light pseudoscalar sgoldstino in K- decays

Details Search for light pseudoscalar sgoldstino in K- decays Search for light pseudoscalar sgoldstino in K- decays

2003-08-25

arxiv.org/abs/hep-ex/0308061v2

Phys.Lett.B602:149-156,2004

Physics

High Energy Physics

High Energy Physics - Experiment

10 pages, LATEX, 8 EPS figures, revised version, to be published in Phys.Lett.B

Scientific paper

10.1016/j.physletb.2004.10.002

A search for the light pseudoscalar sgoldstino production in the three body K- decay K-->pipi0P has been performed with the ISTRA+ detector exposed to the 25 GeV negative secondary beam of the U70 proton synchrotron. No signal is seen. An upper limit for the branching ratio Br(K->pipi0P), at 90% confidence level, is found to be around 9*10**-6 in the effective mass m(P) range from 0 till 200 MeV, excluding the region near m(pi0) where it degrades to 3.5*10**-5.

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