Untagged B -> X_(s+d) gamma CP asymmetry as a probe for new physics

Abstract

The direct CP asymmetry in the untagged inclusive channel B -> X_(s+d) gamma provides a strict test of the standard model. It has been shown beyond the partonic level that this asymmetry is negligibly small thanks to U-spin relations and to the unitarity of the CKM matrix. In the present paper we investigate this relation beyond the SM; in particular, we analyse to which extent deviations from this prediction are possible in supersymmetric scenarios. We analyse the minimal flavour violation scenario, including tan(beta) enhanced terms and using the complete two-loop renormalization group running. Our analysis fully takes into account also the EDM constraints on the supersymmetric phases. We investigate possible correlations between the tagged and the untagged CP asymmetries and the indirect sensitivity of the latter to the B -> X_d gamma CP asymmetry. Furthermore, we derive general model-independent formulae for the branching ratios and CP asymmetries for the inclusive B -> X_d gamma and B -> X_s gamma modes, and update the corresponding SM predictions.

30 pages, 4 figures, typos in formulae (80), (82), (83) corrected, numerical results unaffected

References in corpus (9)

• Minimal Flavour Violation: an effective field theory approach
• SPheno, a program for calculating supersymmetric spectra, SUSY particle decays and SUSY particle production at e+ e- colliders
• Anomalous Dimension Matrix for Radiative and Rare Semileptonic B Decays up to Three Loops
• Present Status of Inclusive Rare B Decays
• b -> s Transitions: A New Frontier for Indirect SUSY Searches
• The CKM Matrix and the Unitarity Triangle
• Two-loop corrections to Radiative Electroweak Symmetry Breaking in the MSSM
• Effect of supersymmetric phases on lepton dipole moments and rare lepton decays
• Determination of the Branching Fraction for Inclusive Decays B -> X_{s} gamma

Cited by in corpus (85)

• The Physics of the B Factories
• Flavor-phenomenology of two-Higgs-doublet models with generic Yukawa structure
• Anatomy and Phenomenology of FCNC and CPV Effects in SUSY Theories
• Flavor Physics in the Quark Sector
• Electroweak Precision Observables in the Minimal Supersymmetric Standard Model
• General Minimal Flavor Violation
• Right-handed charged currents in the era of the Large Hadron Collider
• Rare $B$ Decays as Tests of the Standard Model
• Towards the Identification of New Physics through Quark Flavour Violating Processes
• Constraints on new physics from radiative $B$ decays
• Flavor constraints on the Two Higgs Doublet Models of $Z_2$ symmetric and aligned types
• Cornering New Physics in b --> s Transitions
• Measurement of Inclusive Radiative B-meson Decays with a Photon Energy Threshold of 1.7 GeV
• Measurement of the B --> X_s gamma Branching Fraction and Photon Energy Spectrum using the Recoil Method
• Generic Loop Effects of New Scalars and Fermions in $b\to s{\ell }^{+}{\ell }^{-}$, $(g-2{)}_{\mu }$ and a Vector-like $4^{\mathrm{th}}$ Generation
• SM with four generations: Selected implications for rare B and K decays
• Updated Constraints from B Physics on the MSSM and the NMSSM
• The Supersymmetric Parameter Space in Light of B-physics Observables and Electroweak Precision Data
• Huge right-handed current effects in B->K*(K pi)l+l- in supersymmetry
• Precision Measurement of the B to X_s γPhoton Energy Spectrum, Branching Fraction, and Direct CP Asymmetry A_{CP}(B to X_{s+d}γ
• Long-Distance Dominance of the CP Asymmetry in B->X_{s,d}+gamma Decays
• $b\to s{\ell }^{+}{\ell }^{-}$ Transitions in Two-Higgs-Doublet Models
• Collider aspects of flavour physics at high Q
• Radiative and Electroweak Penguin Decays of B Mesons
• Low Energy Probes of CP Violation in a Flavor Blind MSSM
• Upper Bounds on Rare K and B Decays from Minimal Flavour Violation
• Delta F = 2 observables and B -> X_q gamma decays in the Left-Right Model: Higgs particles striking back
• New Physics at a Super Flavor Factory
• B-decay CP-asymmetries in SUSY with a U(2)^3 flavour symmetry
• Probing the Flavour Structure of Supersymmetry Breaking With Rare B-Processes - A Beyond Leading Order Analysis
• Gluino-mediated electroweak penguin with flavor-violating trilinear couplings
• Measurement of the Branching Fraction and Photon Energy Moments of B->X_s gamma and A_{cp}(B->X_(s+d) gamma)
• Exclusive radiative B-meson decays within the aligned two-Higgs-doublet model
• WMAP Dark Matter Constraints and Yukawa Unification in SUGRA models with CP Phases
• B -> X_d gamma and constraints on new physics
• NNLL QCD Contribution of the Electromagnetic Dipole Operator to Gamma(anti-B -> X(s) gamma)
• Phenomenological Indications of the Scale of Supersymmetry
• The birds and the Bs in RS: the b to s gamma penguin in a warped extra dimension
• Measurement of B(B-->X_s γ), the B-->X_s γ photon energy spectrum, and the direct CP asymmetry in B-->X_{s+d} γ decays
• Footprints of the Beyond in flavor physics: Possible role of the Top Two Higgs Doublet Model
• Flavour violating squark and gluino decays
• Analysis of enhanced tan(beta) corrections in MFV GUT scenarios
• The Minimal Flavour Violation benchmark in view of the latest LHCb data
• The B -> Xs gamma Rate and CP Asymmetry within the Aligned Two-Higgs-Doublet Model
• Phenomenology of flavon fields at the LHC
• Updated Constraints on General Squark Flavor Mixing
• A low-energy perspective on the minimal left-right symmetric model
• Light charged Higgs at the beginning of the LHC era
• Model-independent analysis of $b\to d$ processes
• FCNC and CP Violation Observables in a SU(3)-flavoured MSSM
• Higgs Boson masses and B-Physics Constraints in Non-Minimal Flavor Violating SUSY scenarios
• Invariant approach to flavour-dependent CP-violating phases in the MSSM
• Signatures of bosonic squark decays in non-minimally flavour-violating supersymmetry
• CP Violation in Supersymmetry with Effective Minimal Flavour Violation
• Null tests of the Standard Model at an International Super $B$ Factory
• B Meson Decays
• Measurements of isospin asymmetry and difference of direct $CP$ asymmetries in inclusive $B\to X_s\gamma$ decays
• CP asymmetries of $\overline{B}\to X_s/X_d\gamma$ in models with three Higgs doublets
• Constraints on Supersymmetric Flavour Models from b->s gamma
• Measurements of Direct CP Asymmetries in B to X_s gamma decays using Sum of Exclusive Decays
• Reduction of Charm Quark Mass Scheme Dependence in $\bar{B}\to X_s\gamma$ at the NNLL Level
• Phenomenology of anomaly-mediated supersymmetry breaking scenarios with non-minimal flavour violation
• Exclusive radiative B-meson decays within minimal flavour violating 2HDMs
• A Measurement of CP Asymmetry in b->sgamma using a Sum of Exclusive Final States
• $B_{s,d}^0\to \mu \bar{\mu }$ and $B\to X_s\gamma$ in the R-parity violating MSSM
• Update of the flavour-physics constraints in the NMSSM
• Flavour violating gluino three-body decays at LHC
• Search for new physics via photon polarization of $b\to s\gamma$
• New physics search with flavour in the LHC era
• Status of SM calculations of b > s transitions
• Solving the SUSY CP problem with flavor breaking F-terms
• Full 1-loop calculation of BR$(B_{s,d}^0\to \ell \bar{\ell })$ in models beyond the MSSM with SARAH and SPheno
• Limits on the anomalous $Wtq$ couplings
• Is there a (Pseudo)Scalar at 95 GeV?
• Supersymmetric Flavor-Changing Sum Rules as a Tool for b -> s gamma
• Flavour issues for string-motivated heavy scalar spectra with a low gluino mass: the G2-MSSM case
• Measurement of the direct $CP$ asymmetry in $\bar{B}\to X_{s+d}\gamma$ decays with a lepton tag
• Rare Decays as a Probe for New Physics
• New Physics Search in Flavour Physics
• Supersymmetric contributions to ${\bar{B}}_s\to \varphi {\pi }^0$ and ${\bar{B}}_s\to \varphi {\rho }^0$ decays in SCET
• Imprint of SUSY in radiative B-meson decays
• Recent BABAR Results
• Measurement of Squark Flavor Mixings in Supersymmetric Models at Super B Factory
• Search for $B^0\to K_S^0{K}_S^0\gamma$ decays at Belle
• Electro-Weak Penguin and Leptonic Decays in BaBar