Measurement of the B{sub s} meson lifetime at CDF

Technical Report · Wed Jun 01 04:00:00 EDT 1994

DOI:https://doi.org/10.2172/10167655· OSTI ID:10167655

Proton-antiproton collision data corresponding to a total integrated luminosity of {approximately} 21 pb{sup {minus}1} were collected with the CDF detector at the Fermilab Tevatron collider during 1992--1993. The lifetime of the B{sub s} meson is measured using events from the semileptonic decay B{sub s} {yields} {ell}{sup +}{nu}D{sub s}{sup {minus}}X and from the exclusive decay B{sub s} {yields} J/{psi}{phi}. For the semileptonic decay channel, 76 {ell}{sup +}D{sub s}{sup {minus}} signal events are selected where the D{sub s} is identified via the decay D{sub s}{sup {minus}} {yields} {phi}{pi}{sup {minus}}, {phi} {yields} K{sup +}K{sup {minus}}. From this sample the B{sub s} meson lifetime is determined to be {tau}{sub s} = 1.42{sub {minus}0.23}{sup +0.27} (stat.){sub {minus}0.11}{sup +0.11} (syst.) ps. In the J/{psi}{phi} channel, 11 events are used and the lifetime is found to be {tau}{sub s} = 1.74{sub {minus}0.60}{sup +0.90} (stat.){sub {minus}0.07}{sup +0.07} (syst.) ps.

• Research Organization: Fermi National Accelerator Lab., Batavia, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Alexander von Humboldt-Stiftung, Bonn (Germany); Istituto Nazionale di Fisica Nucleare, Rome (Italy); Ministry of Education, Science and Culture (Japan); National Science Council, Taipei (Taiwan, Province of China); Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 10167655
• Report Number(s): FNAL/C--94/138-E; CONF-940722--15; ON: DE94015381; IN: CDF/PUB/BOTTOM/PUBLIC/2613
• Country of Publication: United States
• Language: English

Related Subjects

662350
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
D MESONS
DATA ANALYSIS
DATA COVARIANCES
DECAYS OF MESONS
EXCLUSIVE INTERACTIONS
EXPERIMENTAL DATA
FERMILAB COLLIDER DETECTOR
J PSI-3097 MESONS
LIFETIME
PROTON-ANTIPROTON INTERACTIONS
SEMILEPTONIC DECAY
WEAK HADRONIC DECAY