Tau Lepton Mass Measurements
Conference
·
· Nucl.Phys.Proc.Suppl.189:24-29,2009
OSTI ID:962115
The authors present the preliminary results from the precision measurement of the mass of the tau lepton using 423 fb{sup -1} of data collected at BABAR. Using a pseudomass endpoint method, they determine the mass to be 1776.68 {+-} 0.12(stat) {+-} 0.41(syst) MeV. They also measure the mass difference between the T{sup +} and T{sup -}, and obtain M{sub +}-M{sub -}/M{sub AVG} = (-3.5 {+-} 1.3) x 10{sup -4}. This results in a limit of -5.6 x 10{sup -4} < M{sub +}-M{sub -}/M{sub AVG} < -1.4 x 10{sup -4} at 90% CL.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 962115
- Report Number(s):
- SLAC-REPRINT-2009-551
- Conference Information:
- Journal Name: Nucl.Phys.Proc.Suppl.189:24-29,2009
- Country of Publication:
- United States
- Language:
- English
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