Belle II Document Server 7 records found  Search took 0.01 seconds. 
1. Rare decays at Belle and Belle II / Seema Choudhury [BELLE2-CONF-PROC-2023-050]
30 December 2023

We present the recent results of the rare decays from the Belle and Belle II experiments, collected at the Y(4S) resonance. [...]
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2. Rare decays at Belle and Belle II / Seema Choudhury [BELLE2-TALK-DRAFT-2023-177] [BELLE2-TALK-CONF-2023-185]
28 November 2023
/ 6th International Conference on Heavy Quarks and Leptons
:This talk summarizes the recent results from Belle and Belle II focusing on the b->s(d) quark
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3. Lepton flavor universality at Belle and Belle II / Seema Choudhury [BELLE2-CONF-PROC-2022-020]
12 November 2022

We report the test of lepton flavor universality at Belle and Belle II experiments considering b -> c and b -> s transitions. [...]
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4. Measurement of the branching fraction for the decay $B \to K^{\ast}(892)\ell^+\ell^-$ at Belle II / Seema Choudhury [BELLE2-CONF-PH-2022-009]
20 September 2022

We report a measurement of the branching fraction of $B \to K^{\ast}(892)\ell^+\ell^-$ decays, where $\ell^+\ell^- = \mu^+\mu^-$ or $e^+e^-$, using electron-positron collisions recorded at an energy at or near the $\Upsilon(4S)$ mass and corresponding to an integrated luminosity of $189$ fb$^{-1}$ [...]
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5. Lepton flavor universality at Belle and Belle II / Seema Choudhury [BELLE2-TALK-DRAFT-2022-128] [BELLE2-TALK-CONF-2022-088]
29 September 2022
/ 8th International Symposium on Symmetries in Subatomic Physics
The rate of semitauonic and electroweak penguin decays in the B sector show hints of lepton-flavor universality violation. [...]
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6. Measurement of branching fraction for B → K∗ℓℓ at Belle II / Seema Choudhury ; Soumen Halder ; Lopamudra Nayak ; Saurabh Sandilya ; et al [BELLE2-CONF-PROC-2022-007]
01 March 2022

This paper report the BR measurement of B → K∗ℓℓ decays using 189.26/fb of data collected during 2019–2021 by the Belle II experiment at the SuperKEKB e+e− asymmetric-energy collider, corresponding to (197.2±5.7)×106 BB ̄ events. [...]
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7. b->sll at Belle II / Seema Choudhury [BELLE2-TALK-DRAFT-2021-128] [BELLE2-TALK-CONF-2021-092]
06 September 2021
/ Anomalies and Precision in the Belle II era workshop
This talk summarises the lepton-flavor-universality ratio (RK & RK*) and angular observable (P5`) results from Belle and prospects at Belle II [...]
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