Measurement of the decay tau. -->. rho. nu

Journal Article · Mon Oct 05 00:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.1527· OSTI ID:5858846

Adler, J; Becker, J J; Blaylock, G T; Bolton, T; Brown, J S; Bunnell, K O; Burnett, T H; Cassell, R E; Coffman, D; Cook, V

The decay tau..-->..rho..nu.. is studied in tau pair production by e/sup +/e/sup -/ annihilation at ..sqrt..s = 3.77 GeV, 0.20 GeV above tautau threshold. The branching fraction is measured to be B(tau..-->..rho..nu..) = (23.0 +- 1.3 +- 1.7)%. The measured distribution of the helicity angle of the charged pion from the rho decay agrees with the theoretical prediction.

• Research Organization: California Institute of Technology, Pasadena, California 91125; University of California at Santa Cruz, Santa Cruz, California 95064; University of Illinois at Urbana-Champaign, Urbana, Illinois 61801; Stanford Linear Accelerator Center, Stanford, California 94305; Univ. of Washington, Seattle, WA (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 5858846
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 59:14
• Country of Publication: United States
• Language: English

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645102* - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties