Updated measurement of the tau lifetime at SLD

Conference · Tue Jul 23 04:00:00 EDT 1996

OSTI ID:491452

We present an updated measurement of the tau lifetime at SLD. 4316 {tau}-pair events, selected from a 150k Z{sup 0} data sample, are analyzed using three techniques: decay length, impact parameter, and impact parameter difference methods. The measurement benefits from the small and stable interaction region at the SLC and the precision CCD pixel vertex detector of the SLD. The combined result is: {tau}{sub {tau}} = 288.1 {+-} 6.1(stat) {+-} 3.3(syst) fs.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); National Science Foundation, Washington, DC (United States); Istituto Nazionale di Fisica Nucleare, Rome (Italy); Japan-US Cooperative Research Project on High Energy Physics, Nagoya (Japan); United Kingdom Particle Physics and Astronomy Research Council (United Kingdom)
• 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; FG02-95ER40896; FG02-92ER40704; FG05-91ER40627
• OSTI ID: 491452
• Report Number(s): SLAC-PUB--7213; CONF-960765--59; ON: DE97007625; IN: ICHEP-96 PA07-064; CNN: Grant PHY-91-13428; Grant PHY-89-21320; Grant PHY-92-04239; Grant-PHY-88-17930; Grant PHY-88-19316; Grant PHY-92-03212
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
LIFETIME
MEASURING METHODS
STANFORD LINEAR COLLIDER DETECTOR
TAU PARTICLES