journal article
oaidoi:10.1016/j.physletb.2004.04.075

Optimal-observable analysis of possible new physics using the b-quark in γγ→tt̄→bX

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Publication date
22 July 2004
Publisher
Elsevier B.V.
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    Abstract

    AbstractWe study possible anomalous top-quark couplings generated by SU(2)×U(1) gauge-invariant dimension-6 effective operators, using the final b-quark momentum distribution in γγ→tt̄→bX. Taking into account non-standard tt̄γ, tbW and γγH couplings, we perform an optimal-observable analysis in order to estimate the precision for the determination of all relevant non-standard couplings

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