Measurement of the lepton forward-backward asymmetry in B →xs+-decays with a sum of exclusive modes

(Belle Collaboration)

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We report the first measurement of the lepton forward-backward asymmetry AFB as a function of the squared four-momentum of the dilepton system, q2, for the electroweak penguin process B→Xs+- with a sum of exclusive final states, where is an electron or a muon and Xs is a hadronic recoil system with an s quark. The results are based on a data sample containing 772×106 BB¯ pairs recorded at the (4S) resonance with the Belle detector at the KEKB e+e- collider. AFB for the inclusive B→Xs+- is extrapolated from the sum of 10 exclusive Xs states whose invariant mass is less than 2 GeV/c2. For q2>10.2 GeV2/c2, AFB

Original languageEnglish
Article number032008
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume93
Issue number3
DOIs
Publication statusPublished - 2016 Feb 22

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leptons
asymmetry
decay
muons
quarks
momentum
detectors
electrons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of the lepton forward-backward asymmetry in B →xs+-decays with a sum of exclusive modes. / (Belle Collaboration).

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 93, No. 3, 032008, 22.02.2016.

Research output: Contribution to journalArticle

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abstract = "We report the first measurement of the lepton forward-backward asymmetry AFB as a function of the squared four-momentum of the dilepton system, q2, for the electroweak penguin process B→Xs+- with a sum of exclusive final states, where is an electron or a muon and Xs is a hadronic recoil system with an s quark. The results are based on a data sample containing 772×106 BB¯ pairs recorded at the (4S) resonance with the Belle detector at the KEKB e+e- collider. AFB for the inclusive B→Xs+- is extrapolated from the sum of 10 exclusive Xs states whose invariant mass is less than 2 GeV/c2. For q2>10.2 GeV2/c2, AFB",
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T1 - Measurement of the lepton forward-backward asymmetry in B →xs+-decays with a sum of exclusive modes

AU - (Belle Collaboration)

AU - Sato, Y.

AU - Ishikawa, A.

AU - Yamamoto, H.

AU - Abdesselam, A.

AU - Adachi, I.

AU - Adamczyk, K.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Bakich, A. M.

AU - Bala, A.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Cho, I. S.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Danilov, M.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, D.

AU - Dutta, K.

AU - Eidelman, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Gaur, V.

AU - Garmash, A.

AU - Gillard, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Won, Eunil

PY - 2016/2/22

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AB - We report the first measurement of the lepton forward-backward asymmetry AFB as a function of the squared four-momentum of the dilepton system, q2, for the electroweak penguin process B→Xs+- with a sum of exclusive final states, where is an electron or a muon and Xs is a hadronic recoil system with an s quark. The results are based on a data sample containing 772×106 BB¯ pairs recorded at the (4S) resonance with the Belle detector at the KEKB e+e- collider. AFB for the inclusive B→Xs+- is extrapolated from the sum of 10 exclusive Xs states whose invariant mass is less than 2 GeV/c2. For q2>10.2 GeV2/c2, AFB

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U2 - 10.1103/PhysRevD.93.032008

DO - 10.1103/PhysRevD.93.032008

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SN - 0556-2821

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