Test of Lepton-Flavor Universality in  B → K ∗ ℓ + ℓ −  Decays at Belle

Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/5189

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DC Field	Value	Language
dc.contributor.author	Bhardwaj, Vishal	-
dc.date.accessioned	2023-08-26T17:38:55Z	-
dc.date.available	2023-08-26T17:38:55Z	-
dc.date.issued	2021	-
dc.identifier.citation	Physical Review Letters, 126(16).	en_US
dc.identifier.uri	https://doi.org/10.1103/PhysRevLett.126.161801	-
dc.identifier.uri	http://hdl.handle.net/123456789/5189	-
dc.description	Only IISER Mohali authors are available in the record.	en_US
dc.description.abstract	We present a measurement of RK , the branching fraction ratio BðB → K μþμ−Þ=BðB → K eþe−Þ, for both charged and neutral B mesons. The ratio for the charged case RK þ is the first measurement ever performed. In addition, we report absolute branching fractions for the individual modes in bins of the squared dilepton invariant mass q2. The analysis is based on a data sample of 711 fb−1, containing 772 × 106 BB¯ events, recorded at the ϒð4SÞ resonance with the Belle detector at the KEKB asymmetricenergy eþe− collider. The obtained results are consistent with standard model expectations.	en_US
dc.language.iso	en_US	en_US
dc.publisher	American Physical Society	en_US
dc.subject	Branching fraction	en_US
dc.subject	Flavor changing	en_US
dc.subject	Particle decays	en_US
dc.subject	neutral currents	en_US
dc.title	Test of Lepton-Flavor Universality in B → K ∗ ℓ + ℓ − Decays at Belle	en_US
dc.type	Article	en_US
Appears in Collections:	Research Articles

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