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Observation of B → K⁰ₛ π⁺ π⁻ and B → K*(892)⁺⁻π⁻⁺ and Measurement of the Charge Asymmetry in B → K*(892)⁺⁻π⁻⁺

Citation

Sun, Werner Man-Li (2003) Observation of B → K⁰ₛ π⁺ π⁻ and B → K*(892)⁺⁻π⁻⁺ and Measurement of the Charge Asymmetry in B → K*(892)⁺⁻π⁻⁺. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/B515-7D62. https://resolver.caltech.edu/CaltechETD:etd-05202003-230218

Abstract

We report on a search for charmless hadronic B decays to the three-body final states K 0 S h +- pi -+ , K +- h -+ pi 0 , and K 0 S h +- pi 0 (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 -> K 0 pi + 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 A CP (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
Non-Caltech Author Email: wms8 (AT) cornell.edu
Record Number: CaltechETD:etd-05202003-230218
Persistent URL: https://resolver.caltech.edu/CaltechETD:etd-05202003-230218
DOI: 10.7907/B515-7D62
ORCID:
Author ORCID
Sun, Werner Man-Li 0000-0003-0649-5086
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 Oct 2021 18:56

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