Results 71 to 80 of about 780 (180)

New physics off the Z-pole: e + e − → f f ¯ $$ f\overline{f} $$ at Future Lepton Colliders

Journal of High Energy Physics
We explore the prospects for probing new physics (NP) beyond the Standard Model (SM) at the future lepton colliders through precision measurements of e + e − → f f ¯ $$ f\overline{f} $$ observables off the Z resonance.
Shao-Feng Ge, Zhuoni Qian, Michael J. Ramsey-Musolf, Jia Zhou   +3 more
doaj   +1 more source

Precision Electroweak Physics at the Tevatron

, 2007
An overview of Tevatron electroweak measurements performed by the CDF and D0 experiments is presented. The current status and future prospects for high precision measurements of electroweak parameters and detailed studies of boson production are highlighted.
openaire   +2 more sources

Tracing the bottom electroweak dipole operators at future lepton colliders

Journal of High Energy Physics
While often omitted in the SMEFT analyses of electroweak measurements, the electroweak dipole operators of the bottom quark have been found to be important in some cases and are also related to processes involving the top quark. In this paper, we further
Jiayin Gu, Jiayu Guo, Xiao-Ze Tan
doaj   +1 more source

Constraining four-heavy-quark operators with top-quark, Higgs, and electroweak precision data

Journal of High Energy Physics
We establish constraints on the dimension-six four-heavy-quark operators in the Standard Model Effective Field Theory (SMEFT) by synthesising LHC measurements of top-quark and single-Higgs production with electroweak precision observables.
Stefano Di Noi, Hesham El Faham, Ramona Gröber, Marco Vitti, Eleni Vryonidou   +4 more
doaj   +1 more source

Effective field theory of precision electroweak physics at one loop

Physics Letters B, 2013
The one loop effects of two dimension-six operators on gauge boson self energies are computed within an effective field theory framework. These self energies are translated into effects on precision electroweak observables, and bounds are obtained on the operator coefficients.
Mebane, Harrison, Greiner, Nicolas, Zhang, Cen, Willenbrock, Scott   +3 more
openaire   +2 more sources

Future collider constraints on top-quark operators

Journal of High Energy Physics
In this paper we present updated constraints on the top-quark sector of the Standard Model Effective Field Theory using data available from Tevatron, LEP and the LHC.
Fernando Cornet-Gomez, Víctor Miralles, Marcos Miralles López, María Moreno Llácer, Marcel Vos   +4 more
doaj   +1 more source

Looking beyond the Standard Model through Precision Electroweak Physics [PDF]

Progress of Theoretical Physics Supplement, 1996
The most important hint of physics beyond the Standard Model (SM) from the 1995 precision electroweak data is that the most precisely measured quantities, the total, leptonic and hadronic decay widths of the $Z$ and the effective weak mixing angle, $\sin^2θ_W$, measured at LEP and SLC, and the quark-lepton universality of the weak charged currents ...
openaire   +2 more sources

From optimal observables to machine learning: an effective-field-theory analysis of e+e − → W+W − at future lepton colliders

Journal of High Energy Physics
We apply machine-learning techniques to the effective-field-theory analysis of the e + e − → W + W − processes at future lepton colliders, and demonstrate their advantages in comparison with conventional methods, such as optimal observables.
Shengdu Chai, Jiayin Gu, Lingfeng Li
doaj   +1 more source

Atomic parity violation and precision electroweak physics — An updated analysis [PDF]

Physical Review D, 1999
8 pages, LaTeX, 3 figures, Submitted to Physical Review D.
openaire   +2 more sources

New Developments in Precision Electroweak Physics

, 1997
15 pages, latex, 3 ...
openaire   +2 more sources