SUSY and Higgs Signatures Implied by Cancellations in $b\to s\gamma$

Abstract

Recent re-evaluations of the Standard Model (SM) contribution to ${\mathcal Br(b\to sγ)$ hint at a positive correction from new physics. Since a charged Higgs boson exchange always gives a positive contribution to this branching ratio, the constraint points to the possibility of a relatively light charged Higgs. It is found that under the HFAG constraints and with re-evaluated SM results large cancellations between the charged Higgs and the chargino contributions in supersymmetric models occur. Such cancellations then correlate the charged Higgs and the chargino masses often implying both are light. Inclusion of the more recent evaluation of $g_{\mu }-2$ is also considered. The combined constraints imply the existence of several light sparticles. Signatures arising from these light sparticles are investigated and the analysis indicates the possibility of their early discovery at the LHC in a significant part of the parameter space. We also show that for certain restricted regions of the parameter space, such as for very large $\tan \beta$ under the $1\sigma$ HFAG constraints, the signatures from Higgs production supersede those from sparticle production and may become the primary signatures for the discovery of supersymmetry.

Published version. 17 pages, 11 figures. One reference added.

References in corpus (14)

• PYTHIA 6.4 Physics and Manual
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• micrOMEGAs2.0: a program to calculate the relic density of dark matter in a generic model
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Gluino NLSP, Dark Matter via Gluino Coannihilation, and LHC Signatures
• The Landscape of Sparticle Mass Hierarchies and Their Signature Space at the LHC
• Light Higgses at the Tevatron and at the LHC and Observable Dark Matter in SUGRA and D Branes
• Explaining PAMELA and WMAP data through Coannihilations in Extended SUGRA with Collider Implications
• Collider signals and neutralino dark matter detection in relic-density-consistent models without universality
• Non-zero trilinear parameter in the mSUGRA model - dark matter and collider signals at Tevatron and LHC
• Light charged Higgs at the beginning of the LHC era
• Decoding the Mechanism for the Origin of Dark Matter in the Early Universe Using LHC Data
• Signature of heavy Charged Higgs Boson at LHC in the 1 and 3 prong Hadronic Tau Decay channels
• Discovering the Higgs Bosons of Minimal Supersymmetry with Tau Leptons and a Bottom Quark

Cited by in corpus (23)

• Multicomponent Dark Matter in Supersymmetric Hidden Sector Extensions
• Discovering Higgs Bosons of the MSSM using Jet Substructure
• Testing SUSY at the LHC: Electroweak and Dark matter fine tuning at two-loop order
• Low Mass Gluino within the Sparticle Landscape, Implications for Dark Matter, and Early Discovery Prospects at LHC-7
• Interpreting the First CMS and ATLAS SUSY Results
• New Constraints on Dark Matter from CMS and ATLAS Data
• Exploring MSSM for Charge and Color Breaking and Other Constraints in the Context of Higgs@125 GeV
• Dark Matter as a Guide Toward a Light Gluino at the LHC
• Predictive Signatures of Supersymmetry: Measuring the Dark Matter Mass and Gluino Mass with Early LHC data
• SUSY Discovery Potential and Benchmarks for Early Runs at $\sqrt{s}=7$ TeV at the LHC
• Connecting the Direct Detection of Dark Matter with Observation of Sparticles at the LHC
• Probing Non-holomorphic MSSM via precision constraints, dark matter and LHC data
• Higgsino Dark Matter in Nonuniversal Gaugino Mass Models
• Sgoldstino-Higgs mixing in models with low-scale supersymmetry breaking
• MSSM Dark Matter in Light of Higgs and LUX Results
• Left-right supersymmetry after the Higgs boson discovery
• The decay $b\to s\gamma$ in the presence of a constant antisymmetric tensor field
• Higgsino dark matter model consistent with galactic cosmic ray data and possibility of discovery at LHC-7
• SUSY darkmatter at the LHC - 7 TeV
• Bounding the B_s -> gamma gamma decay from Higgs mediated FCNC transitions
• Analysis of the TeV-scale mirage mediation with heavy superparticles
• Naturalness of electroweak physics within minimal supergravity
• Heavy Higgs Bosons at the LHC Upgrade