Radiative Corrections to Decay Processes Mediated by Vector Bosons

1962 ◽  
Vol 128 (3) ◽  
pp. 1452-1457 ◽  
Author(s):  
R. A. Shaffer
1980 ◽  
Vol 166 (3) ◽  
pp. 460-492 ◽  
Author(s):  
David Albert ◽  
William J. Marciano ◽  
Daniel Wyler ◽  
Zohreh Parsa

1995 ◽  
Vol 10 (29) ◽  
pp. 2193-2196 ◽  
Author(s):  
G. CYNOLTER ◽  
E. LENDVAI ◽  
G. PÓCSIK

Oblique radiative corrections are calculated to the parameter S in a version of the standard model where the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. We show that to each momentum scale there exists a domain of the masses of charged and neutral vector bosons where S is compatible with the experiments. At a scale of 1 TeV this requires vector boson masses of at least m0 ≈ 400–550 GeV , m+ ≈ 200–350 GeV .


2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
John Coffey ◽  
Lindsay Forestell ◽  
David E. Morrissey ◽  
Graham White

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Henning Bahl ◽  
Philip Bechtle ◽  
Sven Heinemeyer ◽  
Judith Katzy ◽  
Tobias Klingl ◽  
...  

Abstract The $$ \mathcal{CP} $$ CP structure of the Higgs boson in its coupling to the particles of the Standard Model is amongst the most important Higgs boson properties which have not yet been constrained with high precision. In this study, all relevant inclusive and differential Higgs boson measurements from the ATLAS and CMS experiments are used to constrain the $$ \mathcal{CP} $$ CP -nature of the top-Yukawa interaction. The model dependence of the constraints is studied by successively allowing for new physics contributions to the couplings of the Higgs boson to massive vector bosons, to photons, and to gluons. In the most general case, we find that the current data still permits a significant $$ \mathcal{CP} $$ CP -odd component in the top-Yukawa coupling. Furthermore, we explore the prospects to further constrain the $$ \mathcal{CP} $$ CP properties of this coupling with future LHC data by determining tH production rates independently from possible accompanying variations of the $$ t\overline{t}H $$ t t ¯ H rate. This is achieved via a careful selection of discriminating observables. At the HL-LHC, we find that evidence for tH production at the Standard Model rate can be achieved in the Higgs to diphoton decay channel alone.


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