scholarly journals Effective field theory for a heavy Higgs boson: A manifestly gauge-invariant approach

1996 ◽  
Vol 53 (3) ◽  
pp. 1494-1507 ◽  
Author(s):  
A. Nyffeler ◽  
A. Schenk
Keyword(s):  
Field Theory ◽  
Higgs Boson ◽  
Effective Field Theory ◽  
Effective Field ◽  
Gauge Invariant ◽  
Invariant Approach ◽  
Heavy Higgs Boson

scholarly journals The light MSSM Higgs boson mass for large $$\tan \beta $$ and complex input parameters

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
Henning Bahl ◽  
Ivan Sobolev ◽  
Georg Weiglein
Keyword(s):  
Field Theory ◽  
Higgs Boson ◽  
Effective Field Theory ◽  
Higgs Mass ◽  
Effective Field ◽  
Boson Mass ◽  
Higgs Boson Mass ◽  
The Public ◽  
Hybrid Framework ◽  
Fixed Order

AbstractWe discuss various improvements of the prediction for the light MSSM Higgs boson mass in the hybrid framework of the public code $$\texttt {FeynHiggs}$$ FeynHiggs , which combines fixed-order and effective field theory results. First, we discuss the resummation of logarithmic contributions proportional to the bottom-Yukawa coupling including two-loop $$\Delta _b$$ Δ b resummation. For large $$\tan \beta $$ tan β , these improvements can lead to large upward shifts of the Higgs mass compared to the existing fixed-order calculations. Second, we improve the implemented EFT calculation by fully taking into account the effect of $$\mathcal{CP}$$ CP -violating phases. As a third improvement, we discuss the inclusion of partial $$\hbox {N}^3$$ N 3 LL resummation. The presented improvements will be implemented into $$\texttt {FeynHiggs}$$ FeynHiggs .

scholarly journals Note on anomalous Higgs-boson couplings in effective field theory

2015 ◽  
Vol 750 ◽  
pp. 298-301 ◽  
Author(s):  
G. Buchalla ◽  
O. Catà ◽  
A. Celis ◽  
C. Krause
Keyword(s):  
Field Theory ◽  
Higgs Boson ◽  
Effective Field Theory ◽  
Effective Field

scholarly journals On the one-loop calculations with Reggeized quarks

2017 ◽  
Vol 32 (40) ◽  
pp. 1750207 ◽  
Author(s):  
Maxim Nefedov ◽  
Vladimir Saleev
Keyword(s):  
Field Theory ◽  
Renormalization Group ◽  
Effective Field Theory ◽  
Effective Action ◽  
Gauge Invariance ◽  
Effective Field ◽  
Loop Correction ◽  
Gauge Invariant ◽  
The One ◽  
Regge Limit

The technique of one-loop calculations for the processes involving Reggeized quarks is described in the framework of gauge invariant effective field theory for the Multi-Regge limit of QCD, which has been introduced by Lipatov and Vyazovsky. The rapidity divergences, associated with the terms enhanced by log(s), appear in the loop corrections in this formalism. The covariant procedure of regularization of rapidity divergences, preserving the gauge invariance of effective action is described. As an example application, the one-loop correction to the propagator of Reggeized quark and [Formula: see text]-scattering vertex are computed. Obtained results are used to construct the Regge limit of one-loop [Formula: see text] amplitude. The cancellation of rapidity divergences and consistency of the EFT prediction with the full QCD result is demonstrated. The rapidity renormalization group within the EFT is discussed.

scholarly journals Extended Higgs boson sectors, effective field theory, and Higgs boson phenomenology

2021 ◽  
Vol 103 (9) ◽  
Author(s):  
Anisha ◽  
Upalaparna Banerjee ◽  
Joydeep Chakrabortty ◽  
Christoph Englert ◽  
Michael Spannowsky
Keyword(s):  
Field Theory ◽  
Higgs Boson ◽  
Effective Field Theory ◽  
Effective Field
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