On t-quark decay
An extended electroweak model with second-rank antisymmetric tensor fields was proposed. The effective interactions resulting from the exchange of these fields have a specific dependence on the momentum transfer. This leads to the introduction of new model-independent muon decay parameters (M.V. Chi...
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Published in | Physics letters. B Vol. 383; no. 1; pp. 105 - 108 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
22.08.1996
|
Online Access | Get full text |
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Summary: | An extended electroweak model with second-rank antisymmetric tensor fields was proposed. The effective interactions resulting from the exchange of these fields have a specific dependence on the momentum transfer. This leads to the introduction of new model-independent muon decay parameters (M.V. Chizhov, Mod. Phys. Lett. A 9 (1994) 2979), which can be measured experimentally in SLAC and TRIUMF. The new tensor interactions can affect the three-particle semileptonic meson decays (M.V. Chizhov, Mod. Phys. Lett. A 8 (1993) 2753). In this connection it will be interesting to carry out new experiments on
K
+ →
l
+
νγ,
K
+ →
π
0
l
+
ν decays at DAφNE. The
K
L-K
S
mass difference sets constraints to the tensor particles masses. The mass of the lightest tensor particle could be less than the
t-quark mass. Therefore, the lightest tensor particle may give an additional
W-boson contribution to the
t-quark decay with the same signature. In this Letter we have calculated the contribution of the new tensor particles to the
t-quark decay. |
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ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/0370-2693(96)00698-3 |