$B_{s,d}-{\bar{B}}_{s,d}$ mixings and $B_{s,d}\to {\ell }^{+}{\ell }^{-}$ decays within the Manohar-Wise model

Abstract

In this paper, we perform a complete one-loop computation of the short-distance Wilson coefficients for $B_{s,d}-{\bar{B}}_{s,d}$ mixings and $B_{s,d}\to {\ell }^{+}{\ell }^{-}$ decays in the Manohar-Wise model, which extends the SM scalar sector by a colour-octet and weak-doublet scalar. Based on these calculations, combined constraints on the model parameters are derived from the current flavour data, including the $B_{s,d}-{\bar{B}}_{s,d}$ mixings, $B_{s,d}\to {\mu }^{+}{\mu }^{-}$, $B\to X_s\gamma$, $B\to K^{\ast }\gamma$, $B\to \rho \gamma$, and $Z\to b\bar{b}$ decays. The future sensitivity to the model is also explored in the observables achievable with $50{\mathrm{fb}}^{-1}$ of LHCb and $50{\mathrm{ab}}^{-1}$ of Belle-II data. We find that the Manohar-Wise model could explain the current data, especially when the couplings of the charged colour-octet scalars to quarks are complex, with the resulting ${\chi }_{\min }^2$ being significantly smaller than that of the SM. Finally, we investigate correlations among the two isospin asymmetries $\Delta (K^{\ast }\gamma )$ and $\Delta (\rho \gamma )$, as well as the averaged time-integrated branching ratios $\bar{\mathcal{B}}(B_{s,d}\to {\mu }^{+}{\mu }^{-})$; some of them are found to be quite strong and could, therefore, provide further insights into the model, once more precise experimental measurements and theoretical predictions for these observables are available in the future.

52 pages, 17 figures and 2 tables; More discussions and references added, final version appeared in JPG

References in corpus (26)

• 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
• FeynRules - Feynman rules made easy
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• Probing New Physics via the $B_s^0\to {\mu }^{+}{\mu }^{-}$ Effective Lifetime
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• B->V gamma Beyond QCD Factorisation
• Flavor Changing Neutral Currents, an Extended Scalar Sector, and the Higgs Production Rate at the LHC
• Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
• Color-octet scalars at the LHC
• Global fits to b -> s ll data and signs for lepton non-universality
• Massive color-octet bosons and pairs of resonances at hadron colliders
• Heavy octets and Tevatron signals with three or four b jets
• Color Octet Scalar Production at the LHC
• Radiative and Electroweak Penguin Decays of B Mesons
• Grand Unification and Light Color-Octet Scalars at the LHC
• The Minimal Flavour Violation benchmark in view of the latest LHCb data
• Automated mass spectrum generation for new physics
• Pair Production of Color-Octet Scalars at the LHC
• Constraints on the mSUGRA parameter space from NLO calculation of isospin asymmetry in B -> K* gamma
• A new signature for color octet pseudoscalars at the LHC
• Lepton Number Violation from Colored States at the LHC
• Electron Electric Dipole Moment induced by Octet-Colored Scalars

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• LHC bounds on coloured scalars
• New theoretical constraints on scalar color octet models
• Two Higgs doublet models augmented by a scalar color octet
• Top and bottom tensor couplings from a color octet scalar
• Color-octet scalar decays to a gluon and an electroweak gauge boson in the Manohar-Wise model
• Constraints on coloured scalars from global fits
• Electric dipole moments from colour-octet scalars
• Validity of two Higgs doublet models with a scalar color octet up to a high energy scale
• Fingerprinting the contribution of colored scalars to the $H^{+}{W}^{-}Z(\gamma )$ vertex
• Colour Octet Extension of 2HDM