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Radiative Leptonic B Decays


Chen, Edward Tann (2007) Radiative Leptonic B Decays. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/KNQF-1R30.


We present the results of a search for B+ meson decays into gamma l+ nu, where l = e, mu. We use a sample of 232 million B Bbar meson pairs recorded at the Y(4S) resonance with the BaBar detector at the PEP-II B factory. We measure a partial branching fraction DeltaBF in a restricted region of phase space that reduces the effect of theoretical uncertainties, requiring the lepton energy to be in the range 1.875 and 2.850 GeV, the photon energy to be in the range 0.45 and 2.35 GeV, and the cosine of the angle between the lepton and photon momenta to be less than -0.36, with all quantities computed in the Y(4S) center-of-mass frame.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:experiment; high energy; particle physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Hitlin, David G.
Thesis Committee:
  • Hitlin, David G. (chair)
  • Porter, Frank C.
  • Wise, Mark B.
  • Golwala, Sunil
Defense Date:25 September 2006
Record Number:CaltechETD:etd-01302007-083640
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:408
Deposited By: Imported from ETD-db
Deposited On:12 Feb 2007
Last Modified:26 Feb 2020 19:08

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