Rare B decay analyses at Belle

Choudhury, Seema (2021) Rare B decay analyses at Belle. In: 19th International Conference on B-Physics at Frontier Machines, BEAUTY 2020, 21 September 2020 through 24 September 2020, Virtual, Kashiwa.

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Abstract

We report on the measurement of ratios of branching ratio of decays B → Kμμ and B → Kee, dubbed as RK, using a data sample of 711 fb−1 at Υ(4S) resonance recorded by the Belle detector. In addition, we have measured the CP-averaged isospin asymmetry and differential branching ratio of these decays. These observables are calculated in the bins of di-lepton invariant mass squared, q2. We have also searched for lepton-flavor-violating B → Kμ±E∓ decays. The upperlimits on the branching ratio are O(10−8). We improve the existing upper limit on B0 → KS0 μ±E∓ by an order of magnitude, B(B0 → Ks0 μ±E∓) < 3.8 × 10−8 at 90% confidence level. © 2021 Sissa Medialab Srl. All rights reserved.

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IITH Creators:

IITH Creators	ORCiD

Item Type:

Conference or Workshop Item (Paper)

Uncontrolled Keywords:

B-decays; Belle detectors; Branching ratio; Data sample; Invariant mass; Isospin asymmetries; Lepton-flavor; Measurements of; Orders of magnitude; Upper limits

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

21 Sep 2022 13:23

Last Modified:

21 Sep 2022 13:23

URI:

http://raiithold.iith.ac.in/id/eprint/10645