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Observation of B -> K<sup>0</sup><sub>S</sub>pi<sup>+</sup>pi<sup>-</sup> and B -> K<sup>*</sup>(892)<sup>+-</sup>pi<sup>-+</sup> and measurement of the charge asymmetry in B -> K<sup>*</sup>(892)<sup>+-</sup>pi<sup>-+</sup>

Citation

Sun, Werner Man-Li (2003) Observation of B -> K<sup>0</sup><sub>S</sub>pi<sup>+</sup>pi<sup>-</sup> and B -> K<sup>*</sup>(892)<sup>+-</sup>pi<sup>-+</sup> and measurement of the charge asymmetry in B -> K<sup>*</sup>(892)<sup>+-</sup>pi<sup>-+</sup>. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-05202003-230218

Abstract

We report on a search for charmless hadronic B decays to the three-body final states K0Sh+-pi-+, K+-h-+pi0, and K0Sh+-pi0 (h+- denotes a charged pion or kaon), using 9.12 fb-1 of integrated luminosity produced at sqrt{s}=10.58 GeV and collected with the CLEO detector. We observe the decay B -> K0pi+pi- with a branching fraction (50+10-9+-7)x10-6 and the decay B -> K*(892)+-pi-+ with a branching fraction (16+6-5+-2)x10-6, where the uncertainties are statistical and systematic, respectively. Both branching fractions are averages over CP-conjugate states. We also search for a CP-violating asymmetry in the decay B -> K*(892)+-pi-+. We find ACP(B -> K*(892)+-pi-+)=0.26+0.33-0.34+0.10-0.08, giving an allowed interval of [-0.31,0.78] at the 90% confidence level. These measurements are used to constrain fundamental parameters of the Standard Model.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:CP violation; maximum likelihood; 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):
  • Weinstein, Alan Jay
Thesis Committee:
  • Weinstein, Alan Jay (chair)
  • Hughes, Emlyn Willard
  • Porter, Frank C.
  • Wise, Mark B.
Defense Date:19 May 2003
Author Email:wsun (AT) post.harvard.edu
Record Number:CaltechETD:etd-05202003-230218
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-05202003-230218
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1889
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:21 May 2003
Last Modified:26 Dec 2012 02:43

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