Eviction of a 125 GeV "heavy"-Higgs from the MSSM

Abstract

We prove that the present experimental constraints are already enough to rule out the possibility of the ~125 GeV Higgs found at LHC being the second lightest Higgs in a general MSSM context, even with explicit CP violation in the Higgs potential. Contrary to previous studies, we are able to eliminate this possibility analytically, using simple expressions for a relatively small number of observables. We show that the present LHC constraints on the diphoton signal strength, tau-tau production through Higgs and BR(B -> X_s gamma) are enough to preclude the possibility of H_2 being the observed Higgs with m_H~125 GeV within an MSSM context, without leaving room for finely tuned cancellations. As a by-product, we also comment on the difficulties of an MSSM interpretation of the excess in the gamma-gamma production cross section recently found at CMS that could correspond to a second Higgs resonance at m_H~136 GeV.

38 pages, 9 figures. Final version accepted at JHEP. Sections 2, 3 and appendices simplified. Experimental results updated, several references added. Small typos corrected and a new comparison of approximate formulas with full expressions included

References in corpus (25)

• 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
• Parton distributions for the LHC
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• Flavour physics of leptons and dipole moments
• Measurement of the B(s) to mu+ mu- branching fraction and search for B0 to mu+ mu- with the CMS Experiment
• Measurement of the $B_s^0\to {\mu }^{+}{\mu }^{-}$ branching fraction and search for $B^0\to {\mu }^{+}{\mu }^{-}$ decays at the LHCb experiment
• Search for top-squark pair production in the single-lepton final state in pp collisions at sqrt(s) = 8 TeV
• Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in sqrt{s}=8 TeV pp collisions with the ATLAS detector
• Electric Dipole Moments in the MSSM Reloaded
• Search for charged Higgs bosons decaying via H+ -> tau nu in top quark pair events using pp collision data at sqrt(s) = 7 TeV with the ATLAS detector
• The Higgs sector of the phenomenological MSSM in the light of the Higgs boson discovery
• Search for new physics in events with same-sign dileptons and jets in pp collisions at sqrt(s) = 8 TeV
• An update of the constraints on the phenomenological MSSM from the new LHC Higgs results
• Search for gluino mediated bottom- and top-squark production in multijet final states in pp collisions at 8 TeV
• Search for new physics in events with same-sign dileptons and b-tagged jets in pp collisions at sqrt(s) = 7 TeV
• Varying the Universality of Supersymmetry-Breaking Contributions to MSSM Higgs Boson Masses
• Precise predictions for h_a --> h_b h_c decays in the complex MSSM
• Embedding the 125 GeV Higgs boson measured at the LHC in an effective MSSM: possible implications for neutralino dark matter
• 125 GeV Higgs Boson signal within the complex NMSSM
• Flavour Physics and Grand Unification
• Precision Higgs Masses with FeynHiggs 2.2
• What if bb does not dominate the decay of the Higgs-like boson?

Cited by in corpus (8)

• Exotic Decays of the 125 GeV Higgs Boson
• Study of the heavy CP-even Higgs with mass 125 GeV in two-Higgs-doublet models at the LHC and ILC
• Rare top decay $t\to c\gamma$ with flavor changing neutral scalar interactions in two Higgs doublet model
• SM Higgs boson and $t\to cZ$ decays in the 2HDM type III with CP violation
• LFV and g-2 in non-universal SUSY models with light higgsinos
• Flavour-changing Higgs decays into bottom and strange quarks in supersymmetry
• Improved $\tau$-weapons for Higgs hunting
• Higgs Precision Measurements and Flavor Physics: A Supersymmetric Example