Search for tau- ---> 4pi- 3pi+ (pi0) nu/tau Decays
Conference
·
· Nucl.Phys.Proc.Suppl.144:21-26,2005
OSTI ID:890356
A search for the decay of the {tau} lepton to seven charged pions and at most one {pi}{sup 0} was performed using the BABAR detector at the PEP-II e{sup +}e{sup -} collider. The analysis uses data recorded on and near the {Upsilon}(4S) resonance between 1999 and 2003, a total of 124.3 fb{sup -1}. They observe 7 events with an expected background of 11.9 {+-} 2.2 events and calculate a preliminary upper limit of BR({tau}{sup -} {yields} 4{pi}{sup -} 3{pi}{sup +}({pi}{sup 0}){nu}{sub {tau}}) < 2.7 x 10{sup -7} at 90% CL. This is a significant improvement over the previous limit established by the CLEO Collaboration.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 890356
- Report Number(s):
- SLAC-PUB-11291; TRN: US0604561
- Journal Information:
- Nucl.Phys.Proc.Suppl.144:21-26,2005, Conference: Prepared for 8th International Workshop on Tau Lepton Physics (Tau 04), Nara, Japan, 14-17 Sep 2004
- Country of Publication:
- United States
- Language:
- English
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