Has HyperCP Observed a Light Higgs Boson?

Abstract

The HyperCP collaboration has observed three events for the decay Sigma^+ -> p mu^+ mu^- which may be interpreted as a new particle of mass 214.3 MeV. However, existing data from kaon and B-meson decays severely constrain this interpretation, and it is nontrivial to construct a model consistent with all the data. In this letter we show that the ``HyperCP particle'' can be identified with the light pseudoscalar Higgs boson in the next-to-minimal supersymmetric standard model, the A_1^0. In this model there are regions of parameter space where the A_1^0 can satisfy all the existing constraints from kaon and B-meson decays and mediate Sigma^+ -> p mu^+ mu^- at a level consistent with the HyperCP observation.

7 pages, 2 figures

References in corpus (1)

• Light Higgs Production in Hyperon Decay

Cited by in corpus (13)

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• R-axion detection at LHC
• Radiative quarkonium decays and the NMSSM Higgs interpretation of the HyperCP Sigma+ --> p mu+mu- events
• U-boson and the HyperCP exotic events
• Contributions from SUSY-FCNC couplings to the interpretation of the HyperCP events for the decay Σ^+ \to p μ^+ μ^-
• Rare Decays with a Light CP-Odd Higgs Boson in the NMSSM
• Search for TeV Scale Physics in Heavy Flavour Decays
• Search for Low Mass Exotic mesonic structures. Part I: experimental results
• Radiative and leptonic decays of the pseudoscalar charmonium state ${\eta }_c$
• Sigma to p mu+ mu-: Standard Model or New Particle?
• Implication of the HyperCP boson $X^0$ (214 MeV) in the flavour changing neutral current processes