Very light Higgs bosons in extended models at the LHC

Journal Article · Sat May 01 04:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.095006· OSTI ID:21409970

Belyaev, Alexander; Guedes, Renato; Santos, Rui ^[1]; Moretti, Stefano ^[1]

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1. NExT Institute and School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ (United Kingdom)

The Large Electron-Positron (LEP) collider experiments have constrained the mass of the standard model (SM) Higgs boson to be above 114.4 GeV. This bound applies to all extensions of the SM where the coupling of a Higgs boson to the Z boson and also the Higgs decay profile do not differ much from the SM one. However, in scenarios with extended Higgs sectors, this coupling can be made very small by a suitable choice of the parameters of the model. In such cases, the lightest CP-even Higgs boson mass can in turn be made very small. Such a very light Higgs state, with a mass of the order of the Z boson one or even smaller, could have escaped detection at LEP. In this work we perform a detailed parton level study on the feasibility of the detection of such a very light Higgs particle at the Large Hadron Collider (LHC) in the production process pp{yields}hj{yields}{tau}{sup +{tau}-}j, where j is a resolved jet. We conclude that there are several models where such a Higgs state could be detected at the LHC with early data.

• OSTI ID: 21409970
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BOSONS
CERN LHC
COUPLING
CYCLIC ACCELERATORS
DECAY
DETECTION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
GEV RANGE
GEV RANGE 100-1000
GRAND UNIFIED THEORY
HIGGS BOSONS
HIGGS MODEL
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEP STORAGE RINGS
LEPTONS
MASS
MATHEMATICAL MODELS
MATTER
PARTICLE DECAY
PARTICLE MODELS
POSITRONS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
STANDARD MODEL
STORAGE RINGS
SYNCHROTRONS
UNIFIED GAUGE MODELS
Z NEUTRAL BOSONS