Novel measurements of anomalous triple gauge couplings for the LHC

Abstract

Finding better ways to prove the Standard Model Effective Field Theory is a very important direction of research. This paper focuses on measurements of Electroweak triple gauge couplings, paying special attention on the regime of validity of the Effective Field Theory (EFT). In this regard, one of our goals is to find measurements leading to a large increase of the interference between the SM amplitude and the contribution of irrelevant operators in the EFT. We propose two such distributions that will lead to a better accuracy. Improvements compared to the traditional methods as well as LHC high luminosity prospects are discussed.

Anomalous triple gauge couplings in the effective field theory approach at the LHC

“…This is in fact confirmed by preliminary results shown in ref. [43,44]. Therefore, the result of the linear fit in figure 4 should be taken with caution, but the main message (large sensitivity to quadratic corrections) is not affected by this caveat.…”

Resolving the tensor structure of the Higgs coupling to Z bosons via Higgs-strahlung

“…This is analogous to the case of double gauge boson production where a similar situation arises for certain triple gauge boson deformations that contribute to helicity amplitudes that are subdominant in the SM[41][42][43][44].…”

Probing the anomalous triple gauge boson couplings in e+e−→W+W− using WRahaman1, Singh2 2020Phys. Rev. D170100View full textAdd to dashboardCite

“…The anomalous W W V couplings have been studied in the effective operator approach as well as in the effective vertex formalism subjected to SU (2) × U (1) invariance for e + -e − collider [12,[14][15][16][17][18][19][20][21][22][23][24], Large Hadron electron collider (LHeC) [25][26][27], e-γ collider [28] and hadron collider (LHC) [21,22,[29][30][31][32][33][34][35][36][37]. Some CP -odd W W V couplings have been studied in Refs.…”