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Measurement of the branching fraction for the Cabibbo-suppressed decay tau/sup -/. -->. K*/sup -/(892). nu. /sub tau/

Journal Article · · Phys. Rev. Lett.; (United States)
This Letter presents a measurement of the branching fraction for the Cabibbo-suppressed decay tau/sup -/..-->..K*/sup -/(892)..nu../sub tau/ using data obtained with the Mark-II detector at SPEAR. Eleven events containing a K*/sup + -/(892) in coincidence with a muon or an electron of opposite charge were found in data which span the center-of-mass energy region 4.2..K*/sup -/(892)..nu../sub tau/)1.7=(plus-or-minus0.7)%. The absence of events at the K*/sup + -/(1430) yields a 2sigma upper limit B(tau/sup -/..-->..K*/sup -/(1430)..nu../sub tau/)<0.9%.
Research Organization:
Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305
DOE Contract Number:
W-7405-ENG-48; AC03-76SF00515
OSTI ID:
6596481
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 46:4; ISSN PRLTA
Country of Publication:
United States
Language:
English

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