Document Type
Article
Publication Date
1-18-2005
Abstract
We report the first evidence for the decay Σ+→pμ+μ- from data taken by the HyperCP (E871) experiment at Fermilab. Based on three observed events, the branching ratio is B(Σ+→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, Σ+→pP0,P0→μ+μ- with a P0 mass of 214.3±0.5 MeV/c2 and branching ratio B(Σ+→pP0,P0→μ+μ-)=[3.1-1.9+2.4(stat)±1.5(syst)]×10-8.
DOI
10.1103/PhysRevLett.94.021801
Version
Publisher's PDF
Recommended Citation
Park, H. K.; Holmstrom, Timothy; and HyperCP Collaboration, "Evidence for the Decay Σ+→pμ+μ-" (2005). Chemistry & Physics Faculty Publications. 13.
https://digitalcommons.longwood.edu/chemphys_facpubs/13
Original Citation
Phys. Rev. Lett. 94, 021801 (2005)
Comments
© 2005 The American Physical Society. The original publication is available at http://link.aps.org/doi/10.1103/PhysRevLett.94.021801.