$τ ν$ Decay Signature for Detecting $F^{\pm}$ and $B^{\pm}$ Mesons in $e^{+} e^{-}$ Collisions

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Publisher website

14 July 1980

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 45 (2) , 83-85
DOI:10.1103/physrevlett.45.83

Abstract

The decay modes

F (c \bar{s})

,

B (b \bar{u}, b \bar{c}) \to τ ν

are proposed as triggers for

e^{+} e^{-} \to F \bar{F}

,

B \bar{B}

production. Decay branching fractions of order

B (F) ≃ 15 %

and

B (B) ≃ (1 to 2) %

are estimated. The sequential

τ \to e ν \bar{ν}

,

μ ν \bar{ν}

decays provide clear signatures, with the hadronic decay of the associated

F

,

B

carrying exactly half the energy. These triggers can be extended to study

F^{*}

and

B^{*}

resonance production and also to exploit the

τ \to π ν

,

ρ ν

,

A_{1} ν

decays.

Keywords

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