CPT violation and triple-product correlations in B decays

Abstract

The T-odd triple product (TP) asymmetries in B decays to a pair of vector mesons are treated as a good probe of CP violation because of the CPT symmetry. If CPT is no longer a good symmetry, such correlations between T-odd and CP-odd observables do not exist, and one might get unexpected nonzero TP asymmetries as a signal for CPT violation. We give a general formalism of TP asymmetries in the presence of CPT violation, either in decay or in neutral meson mixing. We also discuss how the observables depending on the transversity amplitudes are modified, and compare our expressions with the LHCb results, showing that the study of TP asymmetries might turn out to be one of the best probes for CPT violation.

a couple of references added, version accepted for publication in Phys. Rev. D

References in corpus (5)

• Branching fractions, polarisation and asymmetries of B -> VV decays
• Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays
• Measurement of the polarization amplitudes and triple product asymmetries in the B_s^0 -> phi phi decay
• $B_s\to D_{s}K$ as a Probe of CPT Violation
• Testing CPT Invariance in B^0_d-\bar{B}^0_d and B^0_s-\bar{B}^0_s Oscillations

Cited by in corpus (8)

• Four-body decays $B_{(s)}\to (K\pi {)}_{S/P}(K\pi {)}_{S/P}$ in the perturbative QCD approach
• Observation of the ${\Lambda }_b^0\to \Lambda \varphi$ decay
• Study of $B_{(s)}\to (\pi \pi )(K\pi )$ decays in the perturbative QCD approach
• Testing CPT violation with correlated neutral mesons
• Behaviour of observables for neutral meson decaying to two vectors in the presence of $T$, $CP$ and $CPT$ violation in mixing only
• $CP$-violating observables in four-body $B\to \varphi (\to K\bar{K})K^{\ast }(\to K\pi )$ decays
• Dealing with T and CPT violations in mixing as well as direct and indirect CP violations for neutral mesons decaying to two vectors
• T-odd Observables in Elastic Scattering, in Deep Inelastic Processes and in Weak Decays