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Results on b hadron lifetimes from ALEPH

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Abstract

Measurements of the inclusive b hadron lifetime and of the lifetime of B{sup 0}, B{sup {+-}}, B{sub s} and b baryons are presented. The inclusive b hadron lifetime is determined from the lepton impact parameter, with b events decaying to J/{psi}, and using a dipole method. The mean lifetime is: 1.49{+-}0.04 ps. ALEPH has also made measurements of the B{sup (0)({+-})} lifetimes using lepton D{sup (}*{sup )({+-})} correlations and from complete reconstruction of B{sup 0} and B{sup {+-}} events. The ratio of the B{sup 0}/B{sup {+-}} lifetimes is: 1.03{+-}0.21. The B{sub s} lifetime is 1.90{+-}{sub 0.36}{sup 0.46}{+-}0.05 ps. The mean b baryon lietime is: 1.14{+-}0.25 ps. (orig.)
Authors:
Publication Date:
Oct 01, 1993
Product Type:
Technical Report
Report Number:
MPI-PhE-93-22
Reference Number:
SCA: 662350; 662360; 662380; PA: DEN-94:0F2964; EDB-94:048306; ERA-19:013621; NTS-94:020438; SN: 94001169540
Resource Relation:
Other Information: PBD: Oct 1993
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BEAUTY MESONS; WEAK PARTICLE DECAY; LAMBDA B NEUTRAL BARYONS; SEMILEPTONIC DECAY; Z NEUTRAL BOSONS; WEAK HADRONIC DECAY; ELECTRON-POSITRON INTERACTIONS; ANNIHILATION; GEV RANGE 10-100; HADRONS; IMPACT PARAMETER; INCLUSIVE INTERACTIONS; J PSI-3097 MESONS; ELECTRONS; LIFETIME; PARTICLE PRODUCTION; B NEUTRAL MESONS; B PLUS MESONS; B MINUS MESONS; D PLUS MESONS; D MINUS MESONS; D -2010 MESONS; CORRELATIONS; NEUTRAL-CURRENT INTERACTIONS; ELECTRON SPECTRA; EXPERIMENTAL DATA; EFFECTIVE MASS; MASS SPECTRA; PIONS PLUS; RHO-770 MESONS; A1-1270 MESONS; KAONS NEUTRAL; PSI-3685 MESONS; PHI-1020 MESONS; KAONS PLUS; KAONS MINUS; PAIR PRODUCTION; D S MESO...; 662350; 662360; 662380; DECAYS OF MESONS; DECAYS OF BARYONS; DECAYS OF INTERMEDIATE BOSONS
OSTI ID:
10135103
Research Organizations:
Max-Planck-Institut fuer Physik, Muenchen (Germany). Werner-Heisenberg-Institut
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ON: DE94752164; TRN: DE94F2964
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
12 p.
Announcement Date:
Jul 04, 2005

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Citation Formats

Seywerd, H, and ALEPH Collaboration. Results on b hadron lifetimes from ALEPH. Germany: N. p., 1993. Web.
Seywerd, H, & ALEPH Collaboration. Results on b hadron lifetimes from ALEPH. Germany.
Seywerd, H, and ALEPH Collaboration. 1993. "Results on b hadron lifetimes from ALEPH." Germany.
@misc{etde_10135103,
title = {Results on b hadron lifetimes from ALEPH}
 author = {Seywerd, H, and ALEPH Collaboration}
 abstractNote = {Measurements of the inclusive b hadron lifetime and of the lifetime of B{sup 0}, B{sup {+-}}, B{sub s} and b baryons are presented. The inclusive b hadron lifetime is determined from the lepton impact parameter, with b events decaying to J/{psi}, and using a dipole method. The mean lifetime is: 1.49{+-}0.04 ps. ALEPH has also made measurements of the B{sup (0)({+-})} lifetimes using lepton D{sup (}*{sup )({+-})} correlations and from complete reconstruction of B{sup 0} and B{sup {+-}} events. The ratio of the B{sup 0}/B{sup {+-}} lifetimes is: 1.03{+-}0.21. The B{sub s} lifetime is 1.90{+-}{sub 0.36}{sup 0.46}{+-}0.05 ps. The mean b baryon lietime is: 1.14{+-}0.25 ps. (orig.)}
 place = {Germany}
 year = {1993}
 month = {Oct}
 }