Photon Polarization in the b->s gamma processes in the Left-Right Symmetric Model

Abstract

The circular-polarization of the photon in the radiative B decays is dominantly left-handed in the Standard Model (SM), but the right-handed polarization may be enhanced in some new physics models with right-handed currents, such as the Left-Right Symmetric Model (LRSM). In this article, we investigate how large this wrong polarization could be within the allowed parameter space of the LRSM. We show that in LRSM, the right-handed polarization of the photon in the $b\to s\gamma$ processes could be largely enhanced by the $W_L-W_R$ mixing contributions because of the helicity flip on the internal top quark line of the penguin diagrams and the enhancement by the CKM factor $V_{ts}^R/V_{ts}^L$. We discuss the sensitivity of the proposed methods to determine the $b\to s\gamma$ photon polarization to the LRSM as well as their complementary role compared to the direct search of right-handed charged gauge bosons at LHC.

arXiv comment30pages, 5 figures, published version; references added

References in corpus (30)

• Weak Decays Beyond Leading Logarithms
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond
• Charm-loop effect in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ and $B\to K^{\ast }\gamma$
• Two-Loop QCD Anomalous Dimensions of Flavour-Changing Four-Quark Operators Within and Beyond the Standard Model
• QCD Anatomy of B -> X_s gamma Decays
• NNLO QCD corrections to the B -> X_s gamma matrix elements using interpolation in m_c
• General CP Violation in Minimal Left-Right Symmetric Model and Constraints on the Right-Handed Scale
• Implications from clean observables for the binned analysis of B -> K*ll at large recoil
• On B -> V l l at small dilepton invariant mass, power corrections, and new physics
• Master Formulae for Delta F=2 NLO-QCD Factors in the Standard Model and Beyond
• On epsilon_K beyond lowest order in the Operator Product Expansion
• Mixing-induced CP Asymmetries in Radiative B Decays in and beyond the Standard Model
• B-parameters of the complete set of matrix elements of (Delta B = 2) operators from the lattice
• On transverse asymmetries in B --> K* l+l-
• Anatomy of Mixing-Induced CP Asymmetries in Left-Right-Symmetric Models with Spontaneous CP Violation
• New physics reach of the decay mode $\bar{B}\to {\bar{K}}^{\ast 0}{\ell }^{+}{\ell }^{-}$
• QCD estimate of the long-distance effect in $B\to K^{\ast }\gamma$
• Measuring the Photon Helicity in Radiative B Decays
• Search for leptonic decays of W' bosons in pp collisions at sqrt(s) = 7 TeV
• Delta F = 2 observables and B -> X_q gamma decays in the Left-Right Model: Higgs particles striking back
• Impact of $B\to K_0^{\ast }{\ell }^{+}{\ell }^{-}$ on the New Physics search in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decay
• Time-dependent CP Asymmetry in B->K* gamma as a (Quasi) Null Test of the Standard Model
• Search for W' bosons decaying to an electron and a neutrino with the D0 detector
• Probing right-handed currents in B -> K* l+ l- transitions
• Bayesian Fit of Exclusive $b\to s\bar{\ell }\ell$ Decays: The Standard Model Operator Basis
• Observation of B+ --> K1(1270)+ gamma
• Exclusive radiative B-meson decays within the aligned two-Higgs-doublet model
• ATLAS search for a heavy gauge boson decaying to a charged lepton and a neutrino in pp collisions at sqrt(s) = 7 TeV
• Future prospects for the determination of the Wilson coefficient $C_{7\gamma }^{\prime }$

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• Present and Future K and B Meson Mixing Constraints on TeV Scale Left-Right Symmetry
• Measurement of the photon polarization in ${\Lambda }_b\to \Lambda \gamma$ decays
• Measurement of Time-dependent $CP$ Asymmetries in $B^0\to K_S^0\eta \gamma$ Decays
• Novel method to reliably determine the photon helicity in $b\to s\gamma$
• Implications of the $R_K$ and $R_{K^{\ast }}$ anomalies
• Parity Doubling as a Tool for Right-handed Current Searches
• Probing an intrinsically flavorful ALP via tau-lepton flavor physics
• Measurement of $CP$ asymmetries in $B^0\to K_S^0{\pi }^0\gamma$ decays at Belle II