New constraints on a light CP-odd Higgs boson and related NMSSM ideal Higgs scenarios
- Department of Physics, Indiana University, Bloomington, Indiana 47405 (United States)
Recent BABAR limits on BR({Upsilon}(3S){yields}{gamma}a{yields}{gamma}{tau}{sup +{tau}-}) and BR({Upsilon}(3S){yields}{gamma}a{yields}{gamma}{mu}{sup +{mu}-}) provide increased constraints on the abb coupling of a CP-odd Higgs boson, a, with m{sub a}<M{sub {Upsilon}(3S)}. We extract these limits from the BABAR data and compare to the limits previously obtained using other data sets, especially the CLEO-III BR({Upsilon}(1S){yields}{gamma}{yields}{tau}{sup +{tau}-}) limits. Comparisons are made to predictions in the context of ''ideal''-Higgs NMSSM scenarios, in which the lightest CP-even Higgs boson, h{sub 1}, can have mass below 105 GeV (as preferred by precision electroweak data) and yet can escape old LEP limits by virtue of decays to a pair of the lightest CP-odd Higgs bosons, h{sub 1{yields}}a{sub 1}a{sub 1}, with m{sub a{sub 1}}<2m{sub B}. Most such scenarios with m{sub a{sub 1}}<2m{sub {tau}}are eliminated, but the bulk of the m{sub a{sub 1}}>7.5 GeV scenarios, which are theoretically the most favored, survive. We also outline the impact of the new ALEPH LEP results in the e{sup +}e{sup -{yields}}Z+4{tau} channel. For tan{beta}{>=}3, only NMSSM ideal Higgs scenarios with m{sub h{sub 1}} > or approx. 98 GeV and m{sub a{sub 1}} close to 2m{sub B} satisfy the ALEPH limits. For tan{beta} < or approx. 2, the ALEPH limits are easily satisfied for the most theoretically preferred NMSSM scenarios, which are those with m{sub a{sub 1}} close to 2m{sub B} and m{sub h{sub 1{approx}}}90-100 GeV.
- OSTI ID:
- 21409505
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 81, Issue 7; Other Information: DOI: 10.1103/PhysRevD.81.075003; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Probing next-to-minimal-supersymmetric models with minimal fine tuning by searching for decays of the {upsilon} to a light CP-odd Higgs boson
Many light Higgs bosons in the next-to-minimal supersymmetric model
Related Subjects
ACCURACY
CESR STORAGE RING
COMPARATIVE EVALUATIONS
COUPLING
CP INVARIANCE
ELECTRONS
FORECASTING
GEV RANGE 10-100
HIGGS BOSONS
HIGGS MODEL
LEP STORAGE RINGS
MASS
MULTIPARTICLE SPECTROMETERS
MUONS MINUS
PARTICLE DECAY
PARTICLE IDENTIFICATION
POSITRONS
STANDARD MODEL
WEINBERG-SALAM GAUGE MODEL
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BOSONS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EVALUATION
FERMIONS
FIELD THEORIES
GEV RANGE
GRAND UNIFIED THEORY
INVARIANCE PRINCIPLES
LEPTONS
MATHEMATICAL MODELS
MATTER
MEASURING INSTRUMENTS
MUONS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SPECTROMETERS
STORAGE RINGS
SYNCHROTRONS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES