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

(Belle Collaboration)

Research output: Contribution to journalArticle

139 Citations (Scopus)

Abstract

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
Volume118
Issue number11
DOIs
Publication statusPublished - 2017 Mar 13

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leptons
muons
luminosity
detectors
decay
predictions
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

(Belle Collaboration). / Lepton-Flavor-Dependent Angular Analysis of B →k∗ℓ+ℓ-. In: Physical Review Letters. 2017 ; Vol. 118, No. 11.
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abstract = "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.",
author = "{(Belle Collaboration)} and S. Wehle and C. Niebuhr and S. Yashchenko and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and T. Aziz and V. Babu and Bakich, {A. M.} and V. Bansal and E. Barberio and W. Bartel and P. Behera and B. Bhuyan and J. Biswal and A. Bobrov and A. Bondar and G. Bonvicini and A. Bozek and M. Bračko and Browder, {T. E.} and D. Červenkov and P. Chang and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and R. Chistov and K. Cho and Y. Choi and D. Cinabro and N. Dash and J. Dingfelder and Z. DoleŽal and Z. Dr{\'a}sal and D. Dutta and S. Eidelman and D. Epifanov and H. Farhat and Fast, {J. E.} and T. Ferber and Fulsom, {B. G.} and V. Gaur and N. Gabyshev and A. Garmash and R. Gillard",
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Lepton-Flavor-Dependent Angular Analysis of B →k∗ℓ+ℓ-. / (Belle Collaboration).

In: Physical Review Letters, Vol. 118, No. 11, 111801, 13.03.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Lepton-Flavor-Dependent Angular Analysis of B →k∗ℓ+ℓ-

AU - (Belle Collaboration)

AU - Wehle, S.

AU - Niebuhr, C.

AU - Yashchenko, S.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Aziz, T.

AU - Babu, V.

AU - Bakich, A. M.

AU - Bansal, V.

AU - Barberio, E.

AU - Bartel, W.

AU - Behera, P.

AU - Bhuyan, B.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Chistov, R.

AU - Cho, K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dash, N.

AU - Dingfelder, J.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Dutta, D.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Gillard, R.

PY - 2017/3/13

Y1 - 2017/3/13

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevLett.118.111801

DO - 10.1103/PhysRevLett.118.111801

M3 - Article

AN - SCOPUS:85015862638

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 11

M1 - 111801

ER -