A preliminary measurement of the average B hadron lifetime

Conference · Thu Sep 01 00:00:00 EDT 1994

OSTI ID:10194533

Manly, S L ^[1]

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1. Yale Univ., New Haven, CT (United States)

The average B hadron lifetime was measured using data collected with the SLD detector at the SLC in 1993. From a sample of {approximately}50,000 Z{sup 0} events, a sample enriched in Z{sup 0} {yields} b{bar b} was selected by applying an impact parameter tag. The lifetime was extracted from the decay length distribution of inclusive vertices reconstructed in three dimensions. A binned maximum likelihood method yielded an average B hadron lifetime of {tau}{sub B} = 1.577{plus_minus}0.032(stat.){plus_minus}0.046(syst.) ps.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Science and Engineering Research Council, Swindon (United Kingdom); Istituto Nazionale di Fisica Nucleare, Rome (Italy); US-Japan High Energy Physics Collaboration
• Contributing Organization: SLD Collaboration
• DOE Contract Number: FG02-91ER40676; FG03-92ER40707; FG03-91ER40618; FG03-92ER40689; FG03-93ER40788; FG02-91ER40672; FG02-91ER40677; AC03-76SF00098; FG02-92ER40715; AC02-76ER03069; FG06-85ER40224; AC03-76SF00515; FG05-91ER40627; AC02-; FG02-92ER40704
• OSTI ID: 10194533
• Report Number(s): SLAC-PUB-6668; CONF-9407142-2; ON: DE95003138; BR: 35KA02000/35KS01000; KA0101000; 35KA02000/KA0101000; 35KA02000/35KS01000; 35KA02000/35KS01000; 35KA02000/35KS01000; 35KA02000/35KS01000; KA0101000; 35AB01000/35HK02010; 35KA02000/35KS01000; 35KA02000/35KS01000; TRN: 94:024056
• Resource Relation: Conference: ICHEP `94,Glasgow (United Kingdom),20-27 Jul 1994; Other Information: PBD: Sep 1994
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
LIFETIME
Z NEUTRAL BOSONS
WEAK PARTICLE DECAY
STANFORD LINEAR COLLIDER DETECTOR
MAXIMUM-LIKELIHOOD FIT
BEAUTY PARTICLES
662350
662380
DECAYS OF MESONS
DECAYS OF INTERMEDIATE BOSONS