Dimuon CP asymmetry in B decays and collider signals in two Higgs doublet models

2011/04/27 by Bhaskar Dutta, Shaaban Khalil, Yukihiro Mimura +1 · 1 citation
Physics and Astronomy · #Asymmetry #CP violation #Collider #Dark Matter and Cosmic Phenomena #Higgs boson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Two-Higgs-doublet model #hep-ph

paper · pdf · doi:10.1007/jhep05(2012)131

13 pages, 3 figures

arxiv created 2011/04/27 · openalex publication_date 2012/05/01 · arxiv updated 2015/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We analyze the puzzle of the dimuon CP asymmetry in B_s decays in two Higgs doublet models. We show that the flavor changing neutral current (FCNC) induced by the Higgs coupling in a type III two Higgs doublet model provides a solution to the dimuon charge asymmetry puzzle by enhancing the absorbtive part of the mixing amplitude Γ₁₂^s. We investigate different experimental constraints and show that it is possible to enhance Γ₁₂^s in order to explain the dimuon asymmetry observed by D0. This enhancement requires large Higgs couplings to the first and second generations of quarks which may also explain the recent 3.2 σWjj excess observed by CDF.

Citations

• Axigluon on like-sign charge asymmetry Asℓb, FCNCs and CP asymmetries in B decays
• New color-octet vector boson revisited
• Bounds on an anomalous dijet resonance in W+jets production in ppbar collisions at sqrts =1.96 TeV
• Measurement of the anomalous like-sign dimuon charge asymmetry with9 fb−1ofpp¯collisions
• More model-independent analysis ofb→sprocesses

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