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Title: Measurement of the B+ and B0 Lifetimes using Topological Vertexing at SLD

Abstract

The lifetimes of B{sup +} and B{sup 0} mesons have been measured using a sample of 200,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC between 1993 and 1996. The analysis is an improvement of the inclusive topological measurement recently reported and includes the 50,000 hadronic Z{sup 0} decays collected in 1996 with the SLD upgrade vertex detector. A high statistics sample of 12841 (7942) charged (neutral) vertices with good charge purity is obtained. The charge purity is enhanced by using the vertex mass, the SLC electron beam polarization (63% for 1993 and 77% for 1994-6) and an opposite hemisphere jet charge technique. Lifetime fits for the full data sample yield: {tau}{sub B{sup +}} = 1.698 {+-} 0.040(stat) {+-} 0.046(syst) ps, {tau}{sub B{sup 0}} = 1.581 {+-} 0.043(stat) {+-} 0.061(syst) ps, {tau}{sub B{sup +}}/{tau}{sub B{sup 0}} = 1.072 {+-} {sub 0.049}{sup 0.052}(stat) {+-} 0.038(syst).

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (US)
OSTI Identifier:
826631
Report Number(s):
SLAC-PUB-7635
TRN: US0403487
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 29 Jan 2004
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON BEAMS; LIFETIME; MESONS; POLARIZATION; STATISTICS

Citation Formats

Abe, K. Measurement of the B+ and B0 Lifetimes using Topological Vertexing at SLD. United States: N. p., 2004. Web. doi:10.2172/826631.
Abe, K. Measurement of the B+ and B0 Lifetimes using Topological Vertexing at SLD. United States. https://doi.org/10.2172/826631
Abe, K. 2004. "Measurement of the B+ and B0 Lifetimes using Topological Vertexing at SLD". United States. https://doi.org/10.2172/826631. https://www.osti.gov/servlets/purl/826631.
@article{osti_826631,
title = {Measurement of the B+ and B0 Lifetimes using Topological Vertexing at SLD},
author = {Abe, K},
abstractNote = {The lifetimes of B{sup +} and B{sup 0} mesons have been measured using a sample of 200,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC between 1993 and 1996. The analysis is an improvement of the inclusive topological measurement recently reported and includes the 50,000 hadronic Z{sup 0} decays collected in 1996 with the SLD upgrade vertex detector. A high statistics sample of 12841 (7942) charged (neutral) vertices with good charge purity is obtained. The charge purity is enhanced by using the vertex mass, the SLC electron beam polarization (63% for 1993 and 77% for 1994-6) and an opposite hemisphere jet charge technique. Lifetime fits for the full data sample yield: {tau}{sub B{sup +}} = 1.698 {+-} 0.040(stat) {+-} 0.046(syst) ps, {tau}{sub B{sup 0}} = 1.581 {+-} 0.043(stat) {+-} 0.061(syst) ps, {tau}{sub B{sup +}}/{tau}{sub B{sup 0}} = 1.072 {+-} {sub 0.049}{sup 0.052}(stat) {+-} 0.038(syst).},
doi = {10.2172/826631},
url = {https://www.osti.gov/biblio/826631}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 29 00:00:00 EST 2004},
month = {Thu Jan 29 00:00:00 EST 2004}
}