Title page for ETD etd-070699-205010

Type of Document

Dissertation

Author

Lai, I Chung

Author's Email Address

iclai@lns62.lns.cornell.edu

URN

etd-070699-205010

Title

Measurement of bar{B0} Meson Properties Via Partial Reconstruction of the Decay bar{B0} -> D*+ l- ar{nu}

Degree

PhD

Department

Physics

Advisory Committee

Advisor Name	Title
Kay Kinoshita	Committee Co-Chair
Leo Piilonen	Committee Co-Chair
Laynam Chang	Committee Member
Mark Pitt	Committee Member
Randy Heflin	Committee Member

Keywords

Mixing
Semileptonic Decay
B Meson

Date of Defense

1999-06-18

Availability

restricted

Abstract

Using data recorded by the CLEO II detector operating at the
Upsilon(4S) resonance at the Cornell Electron Storage Ring,
several properties of B mesons are measured using a partially
reconstructed tag of the decay mode bar{B0} ->
D*+ l- bar{nu}. Using 2.38 fb**{-1} of on-resonance
data and the averaged B meson semileptonic branching fraction
through inclusive lepton momentum spectrum obtained by previous
CLEO analysis, we measure the B0 and B- semileptonic
branching fraction to be (10.78 +/- 0.60 +/- 0.69)% and
(10.25 +/- 0.57 +/- 0.65)% respectively, which yields the
lifetime ratio tau_+/tau_0 = 0.950 +0.117-0.080 +0.091-0.068,
assuming the equality of semileptonic partial branching width for
bar{B0} and B-. With a larger dataset of 3.1 fb**{-1}, we measured
the B0-bar{B0} mixing parameter chi_d to be 0.189 +/- 0.019 +/- 0.006.

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	lai-appendix.pdf	113.99 Kb	00:00:31	00:00:16	00:00:14	00:00:07	< 00:00:01
	lai-chapter1.pdf	224.75 Kb	00:01:02	00:00:32	00:00:28	00:00:14	00:00:01
	lai-chapter2.pdf	246.19 Kb	00:01:08	00:00:35	00:00:30	00:00:15	00:00:01
	lai-chapter3.pdf	8.08 Mb	00:37:25	00:19:14	00:16:50	00:08:25	00:00:43
	lai-chapter4.pdf	738.31 Kb	00:03:25	00:01:45	00:01:32	00:00:46	00:00:03
	lai-chapter5.pdf	689.17 Kb	00:03:11	00:01:38	00:01:26	00:00:43	00:00:03
	lai-chapter6.pdf	176.35 Kb	00:00:48	00:00:25	00:00:22	00:00:11	< 00:00:01
	lai-intro.pdf	141.88 Kb	00:00:39	00:00:20	00:00:17	00:00:08	< 00:00:01
	lai-references.pdf	115.87 Kb	00:00:32	00:00:16	00:00:14	00:00:07	< 00:00:01

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