Multiple b-jets Reveal Top Super-partners and the 125 GeV Higgs

Abstract

We demonstrate that in supersymmetry (SUSY) with relatively light top superpartners, h -> bb can be a very promising channel to discover the SM-like Higgs resonance at the Large Hadron Collider (LHC), although in general contexts it is thought to be challenging because of its huge QCD background. In this scenario, the SM-like Higgs boson is mainly produced via cascade decays initiated by pair-produced stop or sbottom squarks. The good sensitivity to h -> bb owes a great deal to the application of multiple (>= 4) b-jet tagging in removing the QCD background, and color-flow variables for reconstructing the Higgs resonance. We show in two benchmark points that a SM-like Higgs resonance can be discovered at the 14 TeV LHC (with a signal-to-background ratio as high as 0.35), with ~< 40/fb of data. Potentially, this strategy can be also applied to non-SUSY theories with cascade decays of top partners for the SM-like Higgs search, such as little Higgs, composite Higgs, and Randall-Sundrum models.

6 pages, 8 figures, 2 tables; final version for Phys. Rev. D

References in corpus (15)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Jet substructure as a new Higgs search channel at the LHC
• Light custodians in natural composite Higgs models
• General Composite Higgs Models
• NLO QCD corrections to pp -> t anti-t b anti-b + X at the LHC
• On the Tuning and the Mass of the Composite Higgs
• Implications of a Light Higgs in Composite Models
• Multivariate discrimination and the Higgs + W/Z search
• A Fermionic Top Partner: Naturalness and the LHC
• 125 GeV Higgs Boson, Enhanced Di-photon Rate, and Gauged U(1)_PQ-Extended MSSM
• Discovering Higgs Bosons of the MSSM using Jet Substructure
• Search for Higgs Bosons in SUSY Cascades in CMS and Dark Matter with Non-universal Gaugino Masses
• Light Higgs boson discovery from fermion mixing
• Signatures of gaugino mass non-universality in cascade Higgs production at the LHC

Cited by in corpus (6)

• Probing the CP-even Higgs Sector via $H_3\to H_2{H}_1$ in the Natural NMSSM
• Towards the fate of natural composite Higgs model through single $t^{\prime }$ search at the 8 TeV LHC
• Simultaneous enhancement in gamma.gamma, b.b-bar and tau+.tau- rates in the NMSSM with nearly degenerate scalar and pseudoscalar Higgs bosons
• Probing the flavor violating scalar top quark signal at the LHC
• Boosted di-boson from a mixed heavy stop
• Top Partner Probes of Extended Higgs Sectors