Constraints on a very light CP-odd Higgs of the NMSSM and other axion-like particles
May, 201021 pages
Published in:
- JHEP 08 (2010) 003
e-Print:
- 1005.3978 [hep-ph]
Report number:
- DESY-10-069
View in:
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Abstract: (arXiv)
In the NMSSM, a light CP-odd Higgs arises due to spontaneous breaking of approximate symmetries such as Peccei-Quinn or R-symmetry and is motivated by string theory. The case when it is heavier than two muons is well studied and constrained. We analyze various meson decay, g-2, beam dump and reactor bounds on the CP-odd Higgs with mass below the muon threshold, in particular, addressing the question how light a CP-odd Higgs can be. We find that it has to be heavier than 210 MeV or have couplings to fermions 4 orders of magnitude below those of the Standard Model Higgs. Our analysis applies more generally to couplings of a light pseudoscalar to matter.Note:
- 21 pages, 4 figures; v2: references added, matches version published in JHEP
- Higgs Physics
- Rare Decays
- Beyond Standard Model
- Supersymmetric Standard Model
- meson: decay
- minimal supersymmetric standard model
- spontaneous symmetry breaking
- muon: magnetic moment
- nuclear reactor
- symmetry: Peccei-Quinn
References(75)
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