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Title: A Measurement of the Charged and Neutral B Meson Lifetimes Using Fully Reconstructed Decays

Abstract

Data collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC are used to study the lifetimes of the B{sup 0} and B{sup +} mesons. The data sample consists of 7.4 fb{sup {minus}1} collected near the Upsilon(4S) resonance. B{sup 0} and B{sup +} mesons are fully reconstructed in several exclusive hadronic decay modes to charm and charmonium final states. The B lifetimes are determined from the flight length difference between the two B mesons which are pair-produced in the Upsilon(4S) decay. The preliminary measurements of the lifetimes are tau{sub B0} = 1.506 {+-} 0.052 (stat) {+-} 0.029 (syst) ps, tau{sub B+} = 1.602 {+-} 0.049 (stat) {+-} 0.035 (syst) ps, and of their ratio is tau{sub B+}/tau{sub B0} = 1.065 {+-} 0.044 (stat) {+-} 0.021 (syst).

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
764972
Report Number(s):
SLAC-PUB-8529
TRN: US0004956
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 30 Aug 2000
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; LIFETIME; B NEUTRAL MESONS; B PLUS MESONS; CHARM PARTICLES; CHARMONIUM; HADRONIC PARTICLE DECAY; EXPERIMENTAL DATA

Citation Formats

Barrera, Barbara. A Measurement of the Charged and Neutral B Meson Lifetimes Using Fully Reconstructed Decays. United States: N. p., 2000. Web. doi:10.2172/764972.
Barrera, Barbara. A Measurement of the Charged and Neutral B Meson Lifetimes Using Fully Reconstructed Decays. United States. doi:10.2172/764972.
Barrera, Barbara. Wed . "A Measurement of the Charged and Neutral B Meson Lifetimes Using Fully Reconstructed Decays". United States. doi:10.2172/764972. https://www.osti.gov/servlets/purl/764972.
@article{osti_764972,
title = {A Measurement of the Charged and Neutral B Meson Lifetimes Using Fully Reconstructed Decays},
author = {Barrera, Barbara},
abstractNote = {Data collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC are used to study the lifetimes of the B{sup 0} and B{sup +} mesons. The data sample consists of 7.4 fb{sup {minus}1} collected near the Upsilon(4S) resonance. B{sup 0} and B{sup +} mesons are fully reconstructed in several exclusive hadronic decay modes to charm and charmonium final states. The B lifetimes are determined from the flight length difference between the two B mesons which are pair-produced in the Upsilon(4S) decay. The preliminary measurements of the lifetimes are tau{sub B0} = 1.506 {+-} 0.052 (stat) {+-} 0.029 (syst) ps, tau{sub B+} = 1.602 {+-} 0.049 (stat) {+-} 0.035 (syst) ps, and of their ratio is tau{sub B+}/tau{sub B0} = 1.065 {+-} 0.044 (stat) {+-} 0.021 (syst).},
doi = {10.2172/764972},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Aug 30 00:00:00 EDT 2000},
month = {Wed Aug 30 00:00:00 EDT 2000}
}

Technical Report:

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