Studies of tau- to h- h- h+ nu and tau- to K- pi0 nu Decays at BaBar
Conference
·
· Nucl.Phys.Proc.Suppl.169:98-104,2007
OSTI ID:918526
We present preliminary inclusive branching fraction measurements of {tau}{sup -} {yields} h{sup -}h{sup -}h{sup +}{nu} (h = {pi} or K) and {tau}{sup -} K{sup -}{pi}{sup 0}{nu} decay modes using a sample of {tau}-pair events collected by the BABAR detector at the SLAC PEP-II asymmetric e{sup +}e{sup -} storage ring. The branching fractions of {tau}{sup -} {yields} {pi}{sup -}{pi}{sup -}{pi}{sup +}, {tau}{sup -} {yields} K{sup -}{pi}{sup -}{pi}{sup +}{nu}, and {tau}{sup -} {yields} K{sup -}{pi}{sup -}K{sup +}{nu} are measured with higher precision than previously published results and the inclusive branching fraction {tau}{sup -} {yields} K{sup -}K{sup -}K{sup +}{nu} is measured for the first time. In addition, the first measurement of the branching fraction {tau}{sup -} {yields} {pi}{sup -}{phi}{nu} and the measurement of the branching fraction {tau}{sup -} {yields} K{sup -}{phi}{nu} are determined by means of a binned maximum likelihood fit to the K{sup +}K{sup -} invariant mass distribution. These branching fractions are extracted by means of a migration matrix that accounts for the cross contamination between the {tau}{sup -} {yields} h{sup -}h{sup -}h{sup +}{nu} modes. The preliminary {tau}{sup -} {yields} K{sup -}{pi}{sup 0}{nu} branching fraction and invariant mass distributions are also presented in this paper.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515;
- OSTI ID:
- 918526
- Report Number(s):
- SLAC-PUB-12920
- Conference Information:
- Journal Name: Nucl.Phys.Proc.Suppl.169:98-104,2007
- Country of Publication:
- United States
- Language:
- English
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