Charged kaon production in tau decays at LEP
Collaboration
17 pages
Published in:
- Phys.Lett.B 334 (1994) 435-449
Report number:
- CERN-PPE-94-088,
- CERN-PPE-94-88
Experiments:
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Abstract: (Elsevier)
Kaon production in one prong tau decays has been studied using data collected with the DELPHI detector at the LEP collider. Charged kaons were identified over a large momentum range by the DELPHI barrel Ring Imaging Cherenkov detector. The following branching ratios have been determined: BR( τ → Kν τ )=(0.85±0.18)%, BR( τ → Kν τ ≥0 neutrals)=(1.54±0.24)%, BR( τ → Kν τ ≥1 neutrals)=(0.69±0.25)%. The result for the exclusive branching ratio is consistent with the Standard Model prediction based on τ - μ - e universality. In addition, tau decay into K ∗− was studied in the channel K ∗− →K − π 0 . The result BR (τ→K ∗− ν τ )× BR (K ∗− →K − π 0 )=(0.57±0.23)% was obtained.- electron positron: colliding beams
- colliding beams: electron positron
- electron positron: annihilation
- annihilation: electron positron
- Z0: electroproduction
- electroproduction: Z0
- tau: pair production
- pair production: tau
- tau: semileptonic decay
- semileptonic decay: tau
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