Lepton-Flavor-Dependent Angular Analysis of B →k∗ℓ+ℓ-

(Belle Collaboration)

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299 Citations (Scopus)


We present a measurement of angular observables and a test of lepton flavor universality in the B→K∗ℓ+ℓ- decay, where ℓ 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 (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.

Original languageEnglish
Article number111801
JournalPhysical review letters
Issue number11
Publication statusPublished - 2017 Mar 13

Bibliographical note

Funding Information:
We acknowledge support from MEXT, JSPS and Nagoya's TLPRC (Japan); ARC (Australia); FWF (Austria); NSFC and CCEPP (China); MSMT (Czechia); CZF, DFG, EXC153, and VS (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, BK21Plus, WCU and RSRI (Korea); MNiSW and NCN (Poland); MES and RFAAE (Russia); ARRS (Slovenia); IKERBASQUE and UPV/EHU (Spain); SNSF (Switzerland); MOE and MOST (Taiwan); and DOE and NSF (U.S.).

Publisher Copyright:
© 2017 American Physical Society.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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