Measurement of the tau lepton mass by the Beijing Spectrometer (BES) Collaboration
The mass of the {tau} lepton has been measured at the Beijing Electron Positron Collider using the Beijing Spectrometer. A search near threshold for e{sup +}e{sup {minus}} {yields} {tau}{sup +}{tau}{sup {minus}} was performed. Candidate events were identified by requiring that one {tau} decay via {tau} {yields} e{nu}{bar {nu}}, and the other via {tau} {yields} {mu}{nu}{bar {nu}}. The mass value, obtained from a fit to the energy dependence of the {tau}{sup +}{tau}{sup {minus}} cross section, is m{sub {tau}} = 1776.9{sub -0.5}{sup +0.4} {plus_minus} 0.2 MeV.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 10105275
- Report Number(s):
- SLAC-PUB-6002; CONF-9207140-2; ON: DE93004628
- Resource Relation:
- Conference: Stanford Linear Accelerator Center (SLAC) summer institute on particle accelerators: third family and the physics of flavor,Stanford, CA (United States),13-24 Jul 1992; Other Information: PBD: Nov 1992
- Country of Publication:
- United States
- Language:
- English
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