Title page for ETD etd-09012000-14080013


Type of Document Dissertation
Author Godang, Romulus
Author's Email Address rg52@cornell.edu
URN etd-09012000-14080013
Title

Measurement of the Ratio of Charged and Neutral B Mesons in Y(4S) Events via Partial Reconstruction of the Semileptonic Decays and

Degree PhD
Department Physics
Advisory Committee
Advisor Name Title
Kinoshita, Kay Committee Chair
Piilonen, Leo E. Committee Co-Chair
Abashian, Alexander Committee Member
Blecher, Marvin Committee Member
Chang, Lay Nam Committee Member
Indebetouw, Guy J. Committee Member
Keywords
  • Partial Reconstruction
  • Semileptonic Decay
  • B Meson
Date of Defense 2000-08-23
Availability unrestricted
Abstract

The decays and are studied using data collected at the CLEO II detector at the Cornell Electron Storage Ring. Both decays are identified using a partial reconstruction method where the D* is detected only through a pion daughter from the decay v. Because of the similarities in the analyses of the two modes, the ratio of the rates is measured in a way that is independent of the decay model, limited mainly by the uncertainty in the relative efficiency for detecting neutral and charged pions. This ratio is equivalent to the ratio of the product of production fraction and lifetime for charged and neutral B mesons, . It is combined with measurements of the lifetime ratio to obtain the ratio of charged and neutral B meson production at the Y(4S) resonance, .

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