Karlsruhe 2024 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 125: Flavour physics 6
T 125.4: Vortrag
Freitag, 8. März 2024, 09:45–10:00, Geb. 30.41: HS 4
Charm-Quark Mass in the Heavy Quark Expansion — •Anastasia Boushmelev1, Thomas Mannel1, and K. Keri Vos2 — 1Theoretical Particle Physics, Center for Particle Physics Siegen, University of Siegen — 2Gravitational Waves and Fundamental Physics (GWFP), Maastricht University, Duboisdomein 30, NL-6229 GT Maastricht, the Netherlands and Nikhef, Science Park 105, NL-1098 XG Amsterdam, the Netherlands
The Heavy Quark Expansion is a powerful framework for making predictions for inclusive heavy hadron decays. It is well established for b-decays and for increasing precision several short-distance mass schemes have been invented in the case of the b quark. Though, considering the charm sector, the treatment of the quark mass has to be further investigated as these mass schemes are not suitable in this case. Here we suggest to replace the charm mass, as well as further non-perturbative quantities, directly by q2 moments based on a similar strategy applied on b-decays using e+e− inverse moments [1]. Following this strategy we study the impact on the perturbative series.
[1] A. Boushmelev, T. Mannel and K. K. Vos, JHEP 07 (2023), 175 doi:10.1007/JHEP07(2023)175 [arXiv:2301.05607 [hep-ph]]
Keywords: Mass Scheme; HQE; Heavy Quark; Charm; q^2 moments