Joint Annual Meeting of the Swiss and Austrian Physical Society 2023

【309】Search for $K_S\to\pi^+\pi^-\mu^+\mu^-$ with the Run II LHCb data

5 Sept 2023, 15:45

15m

Room 118

Talk Nuclear, Particle- and Astrophysics (TASK) Nuclear, Particle- & Astrophysics (TASK - FAKT)

Speaker

Dr Luis Miguel Garcia Martin (EPFL - Ecole Polytechnique Federale Lausanne (CH))

Description

Rare kaon decays are among the most sensitive probes of both heavy and light New Physics. In particular, the Ks->pipimumu process is of O($10^{-14}$) in the SM, and can be enhanced by up to a 100 times by exotic BSM models. Unlike the challenges faced by feasibility studies of $K_S\to\pi^+\pi^- e^+e^-$ decays due to the presence of electrons, $K_S\to\pi^+\pi^-\mu^+\mu^-$ is expected to be very clean given the LHCb performance on pion and muon reconstruction. Additionally, this decay presents an opportunity to test for CP violation. We report the status of the first Ks->mumupipi decay search using Run 2 LHCb data.

Presentation materials

Ks2pipimumu.pdf