Physics Reach of Rare Charm Baryon Decays

25 Aug 2021, 17:00
20m
ZR5

ZR5

Flavor Physics and CP Violation Flavor Physics and CP Violation

Speaker

Marcel Golz (TU Dortmund)

Description

Rare $\vert \Delta c \vert=\vert \Delta u \vert=1$ processes constitute unique flavor probes in the up-sector of the Standard Model. Semileptonic FCNC decays of charmed baryons, such as $\Lambda_c\to p \mu^+\mu^-$, offer a large set of clean null test observables such as CP-asymmetries, lepton-universality ratios, missing energy modes, lepton flavor violating modes and angular observables. In these observables any signal cleanly indicates Physics Beyond the Standard Model. A variety of rare charm baryon modes exists ($\Lambda_c\to p \mu^+\mu^-,\,\Xi_c^{0,\,+}\to \Sigma^{0,\,+} \mu^+\mu^-,\,\Xi_c^0\to \Lambda^0 \mu^+\mu^-,\,\Omega_c^0\to \Xi^0 \mu^+\mu^-$) and complements similar analyses of charmed meson decays.
Along with sizable charm production rates at current flavor facilities, null test searches provide a formidable road in the search for New Physics scenarios, such as leptoquarks, $Z^\prime$- or SUSY-models. We present an overview of null test opportunities with rare charm baryon decays and give sensitivities to New Physics contributions.

Primary authors

Prof. Gudrun Hiller (TU Dortmund) Marcel Golz (TU Dortmund) Mr Tom Magorsch (TU Dortmund)

Presentation materials