February 25, 2026 to March 4, 2026
HSE Study Center “Voronovo”
Europe/Moscow timezone

Search for New Physics in CP Violation in b - ccs and b - sss Amplitudes Interference

Feb 26, 2026, 4:30 PM
12m
HSE Study Center “Voronovo”

HSE Study Center “Voronovo”

Voronovskoe, Moscow Russian Federation
Talk (10+2 min) Young Scientist Forum Young Scientist Forum

Speaker

Dmitry Gavrilov

Description

The presence of New Physics contribution to loop diagram-induced $b \to s \bar{s} s$ transitions can lead to a noticeable direct $CP$ violation in $B^+ \to K^+ K^+ K^-$ if not only the weak but also the strong phase of the New Physics are different from the Standard Model phase. We show that by using a resonance in the $K^+ K^-$ system from the tree diagram $b \to c \bar{c} s$, for example $\chi_{c0}(1P)$, we can significantly expand the possibilities of the method for NP searching in this final state. Due to the changing strong phase near the resonance pole, automatic scanning occurs over all possible values ​of the difference between the strong phases of the Standard Model and NP. In addition, the strongly changing resonance amplitude allows for the enhancement of the $CP$ violation effect in separate areas of the phase volume, due to the fact that the amplitudes of the SM and NP will be comparable.

Primary author

Dmitry Gavrilov

Co-authors

Alexander Bondar (Budker INP) Pasha Pakhlov (LPI RAS)

Presentation materials