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

(Belle Collaboration)

Research output: Contribution to journalArticle

14 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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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