Measurement of the B+ ->eta l+ nu and B+ -> eta' l+ nu Branching Fractions using Upsilon(4S) -> B Bbar Events Tagged by a Fully Reconstructed B Meson Metadata

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Title

  • Main Title Measurement of the B+ ->eta l+ nu and B+ -> eta' l+ nu Branching Fractions using Upsilon(4S) -> B Bbar Events Tagged by a Fully Reconstructed B Meson

Creator

  • Author: D'Orazio, A
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Stanford Linear Accelerator Center
    Place of Publication: [Menlo Park, California]
    Additional Info: SLAC

Date

  • Creation: 2006-08-18

Language

  • English

Description

  • Content Description: We report preliminary measurements of the exclusive charmless semileptonic branching fractions of the B{sup +} {yields} {eta}{ell}{sup +}{nu} and B{sup +} {yields} {eta}'{ell}{sup +}{nu} decays. These measurements are based on 316 fb{sup -1} of data collected at the {Upsilon}(4S) resonance by the BABAR detector. In events in which the decay of one B meson to a hadronic final state is fully reconstructed, the semileptonic decay of the recoiling B meson is identified by the detection of a charged lepton and an {eta} or {eta}'. We measure the branching fraction {Beta}(B{sup +} {yields} {eta}{ell}{sup +}{nu}) = (0.84 {+-} 0.27 {+-} 0.21) x 10{sup -4}, where the first error is statistical and the second one systematic. We also set an upper limit on the branching fraction of {Beta}(B{sup +} {yields} {eta}{ell}{sup +}{nu}) < 1.4 x 10{sup -4} and {Beta}(B{sup +} {yields} {eta}'{ell}{sup +}{nu}) < 1.3 x 10{sup -4} at the 90% confidence level.

Subject

  • Keyword: Decay
  • Keyword: B Mesons
  • Keyword: Detection
  • Keyword: Semileptonic Decay Hepex
  • Keyword: Hepex
  • Keyword: Physics
  • STI Subject Categories: 72 Physics Of Elementary Particles And Fields
  • Keyword: Leptons
  • Keyword: Resonance

Source

  • Conference: Contributed to33rd International Conference On High-Energy Physics (ICHEP), Moscow, Russia, 7/26/2006-8/2/2006

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: SLAC-PUB-11996
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 889669
  • Archival Resource Key: ark:/67531/metadc884874

Note

  • Display Note: http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-11996.html
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