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

Abstract

We discuss the production and two-photon decay of the lightest Higgs boson (h) of the minimal supersymmetric standard model at the CERN Large Hadron Collider. 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 h may be important, and can even dominate all others. The coupling of h to $b\overline{b}$ 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 h -> $\gamma \gamma$ signal. We emphasize the importance of a full treatment of radiative corrections in the Higgs sector for obtaining the h $b\overline{b}$ coupling. If supersymmetric particles are not too heavy, their contributions in loops can either enhance or suppress both the production cross-section and the h -> $\gamma \gamma$ branching fraction. We discuss the relative importance of these factors in the context of various scenarios for the discovery of supersymmetry. Even if h is not detected at the LHC, h may still exist in its expected mass region.

arXiv comment15 pages plain TeX plus 7 uuencoded figures included

References in corpus (17)

• Study of Constrained Minimal Supersymmetry
• The Neutralino Relic Density in Minimal N=1 Supergravity
• One-Loop Analysis of the Electroweak Breaking in Supersymmetric Models and the Fine-Tuning Problems
• Measures of fine tuning
• Low-Energy Effective Lagrangian in Unified Theories with Non-Universal Supersymmetry Breaking Terms
• Testing the Higgs Sector of the Minimal Supersymmetric Standard Model at Large Hadron Colliders
• Calculable Upper Limit on the Mass of the Lightest Higgs Boson in Any Perturbatively Valid Supersymmetric Theory
• Upper Bounds on the Lightest Higgs Boson Mass in General Supersymmetric Standard Models
• Probing Symmetry-Breaking Pattern Using Sfermion Masses
• Naturalness and superpartner masses or when to give up on weak scale supersymmetry
• Low-energy supersymmetry with D-term contributions to scalar masses
• Associated Production of Higgs and Weak Bosons, with H -> b\bar b, at Hadron Colliders
• Detecting an Invisibly Decaying Higgs Boson at a Hadron Supercollider
• Detecting Higgs Boson Decay to Neutralinos at Hadron Supercolliders
• Standard Model Higgs Physics at a 4 TeV Upgraded Tevatron
• Effects of scalar mixing in ${g}{g} \rightarrow \mbox{Higgs} \rightarrow \ga\ga$
• THE DECAY $H_2^0\to gg$\ WITHIN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

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