A Caltech Library Service

Measurement of Branching Fractions and Mass Spectra in B → Kππγ Decays


Samuel, Alexander (2006) Measurement of Branching Fractions and Mass Spectra in B → Kππγ Decays. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/JNY6-XG69.


We present a measurement of the branching fractions of the exclusive radiative penguin processes B to K pi pi gamma in a sample of 232 million e+ e- to B Bbar decays recorded by the BaBar detector at the PEP-II asymmetric-energy storage ring. We reconstruct four final states: K+ pi- pi+, K+ pi- pi0, Ks pi+ pi-, and Ks pi+ pi0, where Ks to pi+ pi-, in the range m(K pi pi) < 1.8 GeV/c^2. We measure the branching fractions BR(B+ to K+ pi- pi+ gamma) = (2.95 +- 0.13 (stat.) +- 0.19 (syst.)) x 10^-5, BR(B0 to K+ pi- pi0 gamma) = (4.07 +- 0.22 (stat.) +- 0.31 (syst.)) x 10^-5, BR(B0 to K0 pi+ pi- gamma) = (1.85 +- 0.21 (stat.) +- 0.12 (syst.)) x 10^-5, and BR(B+ to K0 pi+ pi0 gamma) = (4.56 +- 0.42 (stat.) +- 0.30 (syst.)) x 10^-5.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:BaBar; radiative penguin decays; rare B decays
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Porter, Frank C. (chair)
  • Weinstein, Alan Jay
  • Hitlin, David G.
  • Wise, Mark B.
Defense Date:13 June 2005
Record Number:CaltechETD:etd-05292006-225405
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:2243
Deposited By: Imported from ETD-db
Deposited On:01 Jun 2006
Last Modified:08 Apr 2020 18:57

Thesis Files

PDF - Final Version
See Usage Policy.


Repository Staff Only: item control page