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Measurement of the ratio B(B+→Xeν)/B(B0→Xeν)

  • Author(s): Aubert, B
  • Bona, M
  • Boutigny, D
  • Couderc, F
  • Karyotakis, Y
  • Lees, JP
  • Poireau, V
  • Tisserand, V
  • Zghiche, A
  • Grauges, E
  • Palano, A
  • Chen, JC
  • Qi, ND
  • Rong, G
  • Wang, P
  • Zhu, YS
  • Eigen, G
  • Ofte, I
  • Stugu, B
  • Abrams, GS
  • Battaglia, M
  • Brown, DN
  • Button-Shafer, J
  • Cahn, RN
  • Charles, E
  • Gill, MS
  • Groysman, Y
  • Jacobsen, RG
  • Kadyk, JA
  • Kerth, LT
  • Kolomensky, YG
  • Kukartsev, G
  • Lynch, G
  • Mir, LM
  • Orimoto, TJ
  • Pripstein, M
  • Roe, NA
  • Ronan, MT
  • Wenzel, WA
  • Del Amo Sanchez, P
  • Barrett, M
  • Ford, KE
  • Hart, AJ
  • Harrison, TJ
  • Hawkes, CM
  • Watson, AT
  • Held, T
  • Koch, H
  • Lewandowski, B
  • Pelizaeus, M
  • Peters, K
  • Schroeder, T
  • Steinke, M
  • Boyd, JT
  • Burke, JP
  • Cottingham, WN
  • Walker, D
  • Asgeirsson, DJ
  • Cuhadar-Donszelmann, T
  • Fulsom, BG
  • Hearty, C
  • Knecht, NS
  • Mattison, TS
  • McKenna, JA
  • Khan, A
  • Kyberd, P
  • Saleem, M
  • Sherwood, DJ
  • Teodorescu, L
  • Blinov, VE
  • Bukin, AD
  • Druzhinin, VP
  • Golubev, VB
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Solodov, EP
  • Todyshev, KY
  • Bondioli, M
  • Bruinsma, M
  • Chao, M
  • Curry, S
  • Eschrich, I
  • Kirkby, D
  • Lankford, AJ
  • Lund, P
  • Mandelkern, M
  • Mommsen, RK
  • Roethel, W
  • Stoker, DP
  • Abachi, S
  • Buchanan, C
  • Foulkes, SD
  • Gary, JW
  • Long, O
  • Shen, BC
  • Wang, K
  • Zhang, L
  • Hadavand, HK
  • Hill, EJ
  • et al.

Published Web Location

https://doi.org/10.1103/PhysRevD.74.091105Creative Commons 'BY' version 4.0 license
Abstract

We report measurements of the inclusive electron momentum spectra in decays of charged and neutral B mesons, and of the ratio of semileptonic branching fractions B(B+→Xeν) and B(B0→Xeν). These were performed on a sample of 231×106 BB̄ events recorded with the BABAR detector at the Υ(4S) resonance. Events are selected by fully reconstructing a hadronic decay of one B meson and identifying an electron among the decay products of the recoiling B̄ meson. We obtain B(B+→Xeν)/B(B0→Xeν)=1. 074±0.041(stat)±0.026(syst). © 2006 The American Physical Society.

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