Study of K* production in tau decay

• Main Authors: GOLDBERG, M.; et al., THULASIDAS, M.
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 1990
• Subjects: Databases and Information Systems
• Online Access: https://ink.library.smu.edu.sg/sis_research/5810
• Institution: Singapore Management University

We report on a study of charged and neutral K ∗ production in tau decay. We obtain a branching ratio value BR (τ − → K ∗- ν τ X 0 ) = (1.43±0.11±0.13)% where X 0 designates possible unobserved neutral particles (charge conjugate modes are implicit). We observe the first signals for inclusive K ∗0 and K̄ ∗0 production in τ − decay, and determine the inclusive branching ratios τ − →K ∗0 K − ν τ X 0 and τ − K ̄ ∗0 π − ν τ X 0 to be (0.32±0.08±0.12)% and (0.38±0.11±0.13)%, respectively. We have searched for the decay τ − → K 0 K − ν τ X 0 and set a limit of 8 × 10 −3 at 90% confidence level.