Department

Physics

Document Type

Article

Publication Date

3-2017

Embargo Period

7-3-2018

Abstract

We present a measurement of angular observables and a test of lepton flavor universality in the B → K∗ ` +` − decay, where ` is either e or µ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb−1 containing 772 × 106 BB¯ pairs, collected at the Υ(4S) resonance with the Belle detector at the asymmetric-energy e +e − collider KEKB. The result is consistent with Standard Model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of 2.6σ.

Journal

Physical Review Letters

Journal ISSN

0031-9007

Volume

118

Issue

11

Digital Object Identifier (DOI)

10.1103/PhysRevLett.118.111801

Comments

Preprint.

Included in

Physics Commons

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