Measurement of the B{sup +} and B{sup 0} lifetimes with topological vertexing at SLD

Conference · Mon Jul 01 00:00:00 EDT 1996

OSTI ID:491599

Abe, K ^[1]; Abe, K ^[2]; Abt, I ^[3]

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1. Nagoya Univ. (Japan)
2. Tohoku Univ., Sendai (Japan)
3. Univ. of Illinois, Urbana, IL (United States); and others

The lifetimes of the B{sup +} (B{sub u}) and B{sup 0} (B{sub d}) mesons have been measured using a sample of 150,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis reconstructs the decay length and charge of the B meson using a novel topological technique. This method results in a high statistics sample of 6,033 (3,665) charged (neutral) vertices. The ratio of B{sup +}:B{sup 0} decays in the charged (neutral) sample is 1.8:1 (1:2.3).

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States); Boston Univ., MA (United States); California Inst. of Tech., Pasadena, CA (United States); California Univ., Santa Barbara, CA (United States); California Univ., Santa Cruz, CA (United States); Colorado State Univ., Fort Collins, CO (United States); Colorado Univ., Boulder, CO (United States); Illinois Univ., Urbana, IL (United States); Lawrence Berkeley Lab., CA (United States); Massachusetts Univ., Amherst, MA (United States); Massachusetts Inst. of Tech., Cambridge, MA (United States); Oregon Univ., Eugene, OR (United States); Wisconsin Univ., Madison, WI (United States); Yale Univ., New Haven, CT (United States); Tennessee Univ., Knoxville, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Research, 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); Japan-US Cooperative Research Project on High Energy Physics, Nagoya (Japan)
• DOE Contract Number: AC03-76SF00515; FG02-91ER40676; FG03-92ER40701; FG03-91ER40618; FG03-92ER40689; FG03-93ER40788; FG02-91ER40672; FG02-91ER40677; AC03-76SF00098; FG02-92ER40715; AC02-76ER03069; FG06-85ER40224; AC02-76ER00881; FG02-92ER40704; FG05-91ER40627
• OSTI ID: 491599
• Report Number(s): SLAC-PUB--7227; CONF-960765--58; ON: DE97007639; CNN: Grant NSF PHY-91-13428; Grant NSF PHY-89-21320; Grant NSF PHY-92-04239; Grant NSF PHY-17930; Grant NSF PHY-88-19316; Grant NSF PHY-92-03212
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
B NEUTRAL MESONS
B PLUS MESONS
HADRONIC PARTICLE DECAY
LIFETIME
PARTICLE DISCRIMINATION
Z NEUTRAL BOSONS