Heidelberg 2022 – scientific programme
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T: Fachverband Teilchenphysik
T 63: Search for New Particles 4
T 63.4: Talk
Wednesday, March 23, 2022, 17:00–17:15, T-H22
Search for B± → K± a (a → γ γ) with promptly decaying ALPs - A Monte Carlo study — •Lucas Weidemann, Pablo Goldenzweig, and Torben Ferber — Institute of Experimental Particle Physics, Karlsruhe, Germany
Axion-Like-Particles (ALPs) are a well motivated extension to the Standard Model. They are light, pseudoscalar particles which are dominantly interacting with Standard Model gauge bosons. As a result ALPs can be produced in a flavor-changing neutral current transition by its coupling gaWW to W bosons. Subsequently, the ALP dominantly decays into two photons, which makes B± → K± a (a → γ γ) a promising process for measuring gaWW.
We use Monte Carlo simulation for analyzing this process by reconstructing the B meson and examining the invariant di-photon mass distribution. The study is performed with ALPs in mass range 0.1-4.6 GeV/c2 and zero lifetime.
An outline of our analysis as well as our current status are going to be presented in this talk.