Two-photon decays of the lightest Higgs boson of supersymmetry at the CERN LHC

Journal Article · Mon Jan 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.213· OSTI ID:256720

Kane, G L; Kribs, G D; Martin, S P; Wells, J D ^[1]

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1. Randall Physics Laboratory, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)

We discuss the production and two-photon decay of the lightest Higgs boson ({ital h}{sup 0}) of the minimal supersymmetric standard model at the CERN Large Hadron Collider (LHC). Since the observability of the signal is quite model dependent, we conduct a thorough scan of the parameter space of minimal supersymmetry, including experimental and theoretical constraints. If kinematically allowed, supersymmetric decay modes of {ital h}{sup 0} may be important, and can even dominate all others. The coupling of {ital h}{sup 0} to {ital bb}{vert_bar} can be different from that of a standard model Higgs boson; this can diminish (or enhance, but only if tan{Beta} is very large) the {ital h}{sup 0}{implies}{gamma}{gamma} signal. We emphasize the importance of a full treatment of radiative corrections in the Higgs sector for obtaining the {ital h}{sup 0}{ital b}{ital b}{vert_bar} coupling. If supersymmetric particles are not too heavy, their contributions in loops can either enhance or suppress both the production cross section and the {ital h}{sup 0}{implies}{gamma}{gamma} branching fraction. We discuss the relative importance of these factors in the context of various scenarios for the discovery of supersymmetry. Even if {ital h}{sup 0} is not detected at the LHC, {ital h}{sup 0} may still exist in its expected mass region. {copyright} {ital 1995 The American Physical Society.}

• OSTI ID: 256720
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 53; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CERN
COUPLING
HIGGS BOSONS
MASS
PHOTONS
RADIATIVE DECAY
STANDARD MODEL
SUPERSYMMETRY