Recent Results on Lepton Flavor Universality Test at Belle

Choudhury, Seema (2022) Recent Results on Lepton Flavor Universality Test at Belle. In: 24th DAE-BRNS High Energy Physics Symposium, 2020, 14 December 2020 through 18 December 2020, Jatni.

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Abstract

Recent searches for lepton flavor universality (LFU) violation in B decays show a possible hint of new physics, especially in decays mediated by the flavor-changing neutral current b→ sℓℓ (ℓ= e or μ ) transition.We report measurements of LFU violating observable RK, the ratio of decay branching fractions of B→ Kμμ to B→ Kee.We also measure the differential branching fraction and CP-averaged isospin asymmetry in B→ Kℓℓ decays.The study is based on the full data sample recorded by the Belle detector at the Υ (4 S) resonance, which contains 772 × 106 BB¯ events from e+e- collisions produced by the KEKB collider. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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IITH Creators:	IITH Creators ORCiD
Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	B physics; e+e- experiments; FCNC interaction; New Physics
Subjects:	Physics
Divisions:	Department of Physics
Depositing User:	. LibTrainee 2021
Date Deposited:	05 Nov 2022 10:58
Last Modified:	05 Nov 2022 10:58
URI:	http://raiithold.iith.ac.in/id/eprint/11173
Publisher URL:	http://doi.org/10.1007/978-981-19-2354-8_42
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