Sigma to p mu mu-: Standard Model or New Particle - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: The HyperCP collaboration observed three events for the decay Sigma to p mu+mu-. They suggested that new physics may be required to understand the implieddecay rate and the observed dimuon invariant mass distribution. Motivated bythis result, we re-examine this mode. First within the standard model, and thenassuming there is a new particle. Within the SM we find that this mode islong-distance dominated and its rate falls within the range suggested by theHyperCP measurement. We then examine the conditions under which the observationis consistent with a light Higgs boson and find an explicit example thatsatisfies all the constraints: the light pseudoscalar Higgs boson in thenext-to-minimal supersymmetric standard model NMSSM.



Author: G. Valencia

Source: https://arxiv.org/







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