Top quark anomalous electromagnetic couplings in photon-photon scattering at the LHC
نویسندگان
چکیده
منابع مشابه
Studying Possible Anomalous Top-Quark Couplings at Photon Colliders
Search for new-physics through possible anomalous tt̄γ, tbW and γγH couplings which are generated by SU(2)×U(1) gauge-invariant dimension-6 effective operators is discussed, using energy and angular distributions of final charged-lepton/bquark in γγ → tt̄ → lX/bX for various beam polarizations. Optimal beam polarizations that minimize uncertainty in determination of those non-standard couplings a...
متن کاملConstraints on Anomalous Top Quark Couplings at the LHC
Measurements of distributions associated with the pair production of top quarks at the LHC can be used to constrain (or observe) the anomalous chromomagnetic dipole moment(κ) of the top. For example, using either the tt̄ invariant mass or the pt distribution of top we find that sensitivities to |κ| of order 0.05 are obtainable with 100 fb−1 of integrated luminosity. This is similar in magnitude ...
متن کاملCP violating anomalous top-quark couplings at the LHC
The standard Model of particle physics have been a successful theory to describe the observed experimental data till date. However there are theoretical issues such as matter-antimatter asymmetry and experimental issues such as finiteness of electric dipole moment (EDM) and anomalous magnetic moment which hints for beyond standard model physics in the form of CP violation. Though small in natur...
متن کاملSensitivity to Anomalous Quartic Gauge Couplings in Photon-photon Interactions at the Lhc
The exclusive two-photon production at the LHC of pairs of W and Z bosons provides a novel and unique testground for the electroweak gauge boson sector. In particular it offers, thanks to high γγ center-of-mass energies, large and direct sensitivity to the anomalous quartic gauge couplings otherwise very difficult to investigate at the LHC. An initial analysis has been performed assuming lepton...
متن کاملProbing Top-quark Couplings at Lepton and Photon Colliders
The Standard Model (SM) has provided a remarkably successful description of almost all available data involving the strong and electroweak interactions. In particular, the discovery of the top-quark at the Tevatron with a mass mt = 173:5 5:2 GeV, close to that anticipated by ts to precision electroweak data is a great triumph. Nonetheless, the SM leaves many fundamental questions unanswered, an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2015
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.92.014006