Journée de la saveur à IJCLab

New physics search via CP observables in Bs0→ϕϕ decays with left- and right-handed Chromomagnetic operators (10'+3')

2 juin 2023, 15:35

13m

200/0-Auditorium - Auditorium P. Lehmann (IJCLab)

Orateur

Tejhas Kapoor (IJC Lab)

Description

In this work, we investigate the time-dependent angular analysis of $B_s^0\to \varphi \varphi$ decay to search for new physics signals via CP-violating observables. We work with a new physics Hamiltonian containing both left- and right-handed Chromomagnetic dipole operators. The hierarchy of the helicity amplitudes in this model gives us a new scheme of experimental search, which is different from the ones LHCb has used in its analysis. To illustrate this new scheme, we perform a sensitivity study using two pseudo datasets generated using LHCb's measured values. We find the sensitivity of CP-violating observables to be of the order of $5-7\mathrm{\%}$ with the current LHCb statistics. Moreover, we show that Belle(II)'s $B_d^0\to \varphi K_s$ and LHCb's $B_s^0\to \varphi \varphi$ measurements could be coupled within our model to obtain the chirality of the new physics.

Documents de présentation

Flavour Day Talk 2 June.pdf