Electromagnetic dipole moments of the top quark
نویسندگان
چکیده
منابع مشابه
Probing the chromoelectric and chromomagnetic dipole moments of the top quark at hadronic colliders.
We study the effects of the anomalous chromoelectric and chromomagnetic dipole moments of the top quark on top-pair production, on top-pair plus one jet production, and on their ratios, as well as their dependence on the transverse momenta of the top quark and the jet. We also construct CP-odd and T̂-odd observables to probe the dispersive part of the chromoelectric form factor of the top quark,...
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We show how to determine the electric and weak dipole moments of the top quark simultaneously and independently from ee → tt̄ at √ s = 500 GeV NLC. To obtain the best accuracies with which the dipole moments can be measured, we apply the optimal observables to extract the CP violating effects and consider only purely hadronic, hadronic-leptonic final state events. Results with leftand righthande...
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The Tevatron and the Next Linear Collider(NLC) will be excellent tools for probing the detailed nature of the top quark. We perform a preliminary examination of the influence of an anomalous chromomagnetic moment for the top, κ, on the characteristics of tt̄ production at the Tevatron and on the spectrum of gluon radiation associated with tt̄ production at the NLC. In particular, we analyze the s...
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Using electroweak data and an effective Lagrangian approach we obtain stringent bounds on the tau anomalous magnetic moment, −0.004 ≤ aτ ≤ 0.006, and on its electric dipole moment, |dτ | ≤ 1.1× 10 e cm. This significantly improves our previous bounds. With the same method, we obtain limits on the dipole moments of other fermions. ∗Laboratoire associé au C.N.R.S. — URA D0063.
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2013
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.87.074015