Evidence for the decay ∑+ → pμ+ μ-
Park, H.K.; Burnstein, R.A.; Chakravorty, A.; Chen, Y.C.; Choong, W.S.; Clark, K.; Dukes, E.C.; Durandet, C.; Felix, J.; Fu, Y.; Gidal, G.; Gustafson, H.R.; Holmstrom, T.; Huang, M.; James, C.; Jenkins, C.M.; Jones, T.; Kaplan, D.M.; Lederman, L.M.; Leros, N.; Longo, M.J.; Lopez, F.; Lu, L.C.; Luebke, W.; Luk, K.B.; Nelson, K.S.; Perroud, J.-P.; Rajaram, D.; Rubin, H.A.; Volk, J.; White, C.G.; White, S.L.; Zyla, P.
2005

Abstract

We report the first evidence for the decay ∑+ → pμ+ μ- from data taken by the HyperCP (E871) experiment at Fermilab. Based on three observed events, the branching ratio is B(∑+ → pμ+ μ-) = [8.6 -5.4 +6.6(stat) ± 5.5(syst)] × 10 -8. The narrow range of dimuon masses may indicate that the decay proceeds via a neutral intermediate state, ∑+ rarr; pp0, p0 → μ+ μ- with a P0 mass of 214.3 ± 0.5 MeV/c 2 and branching ratio B(∑+ rarr; pp 0, p0 → μ+ μ-) = [3.1-1.9 -2.4(stat) ± 1.5(syst)] × 10 -8. © 2005 The American Physical Society.

Details

Title Evidence for the decay ∑+ → pμ+ μ-
Author(s) Park, H.K. ; Burnstein, R.A. ; Chakravorty, A. ; Chen, Y.C. ; Choong, W.S. ; Clark, K. ; Dukes, E.C. ; Durandet, C. ; Felix, J. ; Fu, Y. ; Gidal, G. ; Gustafson, H.R. ; Holmstrom, T. ; Huang, M. ; James, C. ; Jenkins, C.M. ; Jones, T. ; Kaplan, D.M. ; Lederman, L.M. ; Leros, N. ; Longo, M.J. ; Lopez, F. ; Lu, L.C. ; Luebke, W. ; Luk, K.B. ; Nelson, K.S. ; Perroud, J.-P. ; Rajaram, D. ; Rubin, H.A. ; Volk, J. ; White, C.G. ; White, S.L. ; Zyla, P.
Published in Physical Review Letters
Volume 94
Issue 2
Pages 021801
Date 2005
DOI https://doi.org/10.1103/PhysRevLett.94.021801
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Laboratories LPHE
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2010-11-05

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