$tbW$ Anomalous Couplings in the Two Higgs Doublet Model

Abstract

We make a complete one loop calculation of the $tbW$ couplings in the Two Higgs Doublet Model. We evaluate both the anomalous couplings $g_L$ and $g_R$ as well as left handed and right handed component of $tbW$. The computation is done in the Feynman gauge using the on-shell scheme renormalization for the Standard Model wave functions and parameters. We first show that the relative corrections to these anomalous couplings are rather small in most regions of the parameter space. We then analyze the effects of these anomalous couplings on certain observables such as top quark polarization in single top production through $t-$channel as well as $W^{\pm }$ boson helicity fractions in top decay.

30 pages, 7 figures and 6 tables. Matches published version

References in corpus (15)

• Big-Bang Nucleosynthesis
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
• Search for charged Higgs bosons decaying via H+ -> tau nu in top quark pair events using pp collision data at sqrt(s) = 7 TeV with the ATLAS detector
• Constraining the top-Higgs sector of the Standard Model Effective Field Theory
• Single top quark production at LHC with anomalous Wtb couplings
• Probing anomalous Wtb couplings in top pair decays
• Measurement of the W boson polarization in top quark decays with the ATLAS detector
• ATLAS sensitivity to Wtb anomalous couplings in top quark decays
• The Top Quark Decay Vertex in Standard Model Extensions
• New directions for top quark polarization in the $t$-channel process
• Feynman Diagram Calculations with FeynArts, FormCalc, and LoopTools
• New limits on anomalous contributions to the $Wtb$ vertex
• Probing anomalous $Wtb$ couplings at the LHC in single top quark production through $t$-channel

Cited by in corpus (11)

• Probing anomalous $Wtb$ couplings at the LHC in single top quark production through $t$-channel
• Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature
• Top quark polarization as a probe of charged Higgs bosons
• Top and bottom tensor couplings from a color octet scalar
• The right top coupling in the aligned two-Higgs-doublet model
• Measurement of the polarisation of single top quarks and antiquarks produced in the $t$-channel at $\sqrt{s}=13$ TeV and bounds on the $tWb$ dipole operator from the ATLAS experiment
• Searching for Heavy Charged Higgs Bosons through Top Quark Polarization
• $T$-odd correlations in polarized top quark decays in the sequential decay $t(\uparrow )\to X_b+W^{+}(\to {\ell }^{+}+{\nu }_{\ell })$ and in the quasi three-body decay $t(\uparrow )\to X_b+{\ell }^{+}+{\nu }_{\ell }$
• Positivity bound on the imaginary part of the right-chiral tensor coupling $g_R$ in polarized top quark decay
• Bread and butter physics: NLO electroweak corrections to polarized top quark decays
• NLO and NNLO corrections to polarized top quark decays