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 (15)

• Light Axion within the Next-to-Minimal Supersymmetric Standard Model
• Improved Measurement of the Electroweak Penguin Process B->Xsll
• Measurement of the B -> Xs l+ l- branching fraction with a sum over exclusive modes
• b-physics signals of the lightest CP-odd Higgs in the NMSSM at large tan beta
• Evidence for the Decay Sigma+ -> p mu+ mu-
• Observation of the rare decay K_S -> pi^0mu^+mu^-
• Kaon Physics with Light Sgoldstinos and Parity Conservation
• Implications of a new particle from the HyperCP data on Σ^+ \to p μ^+ μ^-
• Observation of the Decay K- -> pi- mu+ mu- and Measurements of the Branching Ratios for K+/- -> pi+/- mu+ mu-
• A New Measurement of the Rare Decay $K^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$
• On sgoldstino interpretation of HyperCP events
• On the Possibility of a New Boson X^0 (214 MeV) in Sigma^+ -> p mu^+ mu^-
• The Decay Sigma^+ -> p l^+ l^- within the Standard Model
• Light Higgs Production in Hyperon Decay
• Constraints on the new particle in ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$

Cited by in corpus (39)

• The Next-to-Minimal Supersymmetric Standard Model
• Secluded U(1) below the weak scale
• Implications of LHCb measurements and future prospects
• Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon -> gamma A0
• Search for Light CP-odd Higgs in Radiative Decays of Upsilon(1S)
• Constraints on a very light CP-odd Higgs of the NMSSM and other axion-like particles
• Experiments with K-Meson Decays
• ${\Sigma }_b\to {\Sigma }_c$ and ${\Omega }_b\to {\Omega }_c$ weak decays in the light-front quark model
• Anomaly of Zbb coupling revisited in MSSM and NMSSM
• Extended MSSM Neutralinos as the Source of the PAMELA Positron Excess
• B meson Dileptonic Decays in NMSSM with a Light CP-odd Higgs Boson
• Constraining Light Bosons with Radiative ${\rm Y}(1S)$ Decays
• Search for a light exotic particle in J/psi radiative decays
• Evidence for the rare decay ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$
• R-axion detection at LHC
• Radiative quarkonium decays and the NMSSM Higgs interpretation of the HyperCP Sigma+ --> p mu+mu- events
• Search for a Low Mass Particle Decaying into mu^+ mu^- in B0-> K*0 X and B0-> rho0 X at Belle
• A Brief Review on Dark Matter Annihilation Explanation for $e^{\pm }$ Excesses in Cosmic Ray
• Muon Signals of Very Light CP-odd Higgs states of the NMSSM at the LHC
• Search for a light pseudoscalar particle in the decay $K_L^0\to {\pi }^0{\pi }^{0}X$
• U-boson and the HyperCP exotic events
• Rare decay ${\pi }^0\to e^{+}{e}^{-}$ constraints on the light CP-odd Higgs in NMSSM
• Rare Z-decay into light CP-odd Higgs bosons: a comparative study in different new physics models
• Studying ${\mathcal{B}}_1({\frac{1}{2}}^{+})\to {\mathcal{B}}_2({\frac{1}{2}}^{+}){\ell }^{+}{\ell }^{-}$ Semi-leptonic Weak Baryon Decays with the SU(3) Flavor Symmetry
• Rare B Decays with a HyperCP Particle of Spin One
• 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 the Rare Decays KL->pi0pi0mu+mu- and KL->pi0pi0X0->pi0pi0mu+mu-
• Search for Low Mass Exotic mesonic structures. Part I: experimental results
• Search for TeV Scale Physics in Heavy Flavour Decays
• Radiative and leptonic decays of the pseudoscalar charmonium state ${\eta }_c$
• Probing light pseudoscalar, axial vector states through ${\eta }_b\to {\tau }^{+}{\tau }^{-}$
• Decay rate and asymmetries of ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$
• Yangian description for decays and possible explanation of $X$ in the decay $K_L^0\to {\pi }^0{\pi }^{0}X$
• A New Experiment to Study Hyperon CP Violation and the Charmonium System
• Sigma to p mu+ mu-: Standard Model or New Particle?
• Study on the effects of the light CP-odd Higgs via the leptonic decays of pseudoscalar mesons
• Observation of the very rare ${\Sigma }^{+}\to p{\mu }^{+}{\mu }^{-}$ decay
• Implication of the HyperCP boson $X^0$ (214 MeV) in the flavour changing neutral current processes