Hadronic decay widths of Higgs bosons in the left-right-symmetric model

1992 ◽  
Vol 45 (1) ◽  
pp. 241-246 ◽  
Author(s):  
M. Frank ◽  
H. Hamidian ◽  
C. S. Kalman
Keyword(s):  
Higgs Bosons ◽  
Hadronic Decay ◽  
Symmetric Model ◽  
Decay Widths

Principle-of-minimal-sensitivity-corrected quantities in heavy quarkonia

1988 ◽  
Vol 66 (2) ◽  
pp. 112-125
Author(s):  
Anthony V. Dentamaro ◽  
Gary R. Goldstein
Keyword(s):  
Electric Dipole Transition ◽  
Dipole Transition ◽  
Hadronic Decay ◽  
Transition Rates ◽  
Single Model ◽  
Potential Models ◽  
Decay Widths ◽  
Phenomenological Potential ◽  
Hyperfine Splittings ◽  
Best Fit

Stevenson's principle of minimal sensitivity is used in renormalizing radiative corrections to hyperfine splittings, leptonic and hadronic decay widths, and electric-dipole transition rates. Numerical values for these quantities are presented for the charmonium and bottomonium systems, enlisting several nonrelativistic phenomenological potential models to determine the best fit to the experimental data. It is shown that good results may be obtained within a single model in which the value of ΛQCD is calculated and kept constant for all predictions within that model.

scholarly journals Two-photon decay widths of Higgs bosons in minimal broken supersymmetry

1986 ◽  
Vol 34 (1) ◽  
pp. 172-181 ◽  
Author(s):  
R. Bates ◽  
John N. Ng ◽  
P. Kalyniak
Keyword(s):  
Higgs Bosons ◽  
Two Photon ◽  
Photon Decay ◽  
Decay Widths

scholarly journals The Higgs boson decays with the lepton flavor violation

2018 ◽  
Vol 33 (17) ◽  
pp. 1850103 ◽  
Author(s):  
O. M. Boyarkin ◽  
G. G. Boyarkina ◽  
D. S. Vasileuskaya
Keyword(s):  
Higgs Boson ◽  
Branching Ratio ◽  
Vacuum Expectation ◽  
Theoretical Expression ◽  
Symmetric Model ◽  
Third Order ◽  
Mixing Angle ◽  
Neutrino Sector ◽  
Lepton Flavor ◽  
Decay Widths

Within the left–right symmetric model (LRM), the decays [Formula: see text] where [Formula: see text] is an analog of the Standard Model Higgs boson, are considered. The widths of this decays are found in the third-order of the perturbation theory. Since the main contribution to the decay widths is caused by the diagram with the light and heavy neutrinos in the virtual state, then investigation of this decays could shed light upon the neutrino sector structure. The obtained decay widths critically depend on the charged gauge bosons mixing angle [Formula: see text] and the heavy–light neutrinos mixing angle [Formula: see text]. The LRM predicts the values of these angles as functions of the vacuum expectation values [Formula: see text] and [Formula: see text]. Using the results of the existing experiments, on looking for the additional charged gauge boson [Formula: see text] and on measuring the electroweak [Formula: see text] parameter, gives [Formula: see text] However, even using the upper bounds on [Formula: see text] and [Formula: see text], one does not manage to get the upper experimental bound on the branching ratio [Formula: see text] being equal to [Formula: see text]. The theoretical expression proves to be on two orders of magnitude less than [Formula: see text].

scholarly journals Atomki anomaly in gauged U(1)R symmetric model

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Osamu Seto ◽  
Takashi Shimomura
Keyword(s):  
Higgs Boson ◽  
Rare Decays ◽  
Gauge Boson ◽  
Electron Scattering ◽  
Higgs Bosons ◽  
Symmetric Model ◽  
Parameter Region ◽  
Stringent Constraint

Abstract The Atomki collaboration has reported that unexpected excesses have been observed in the rare decays of Beryllium nucleus. It is claimed that such excesses can suggest the existence of a new boson, called X, with the mass of about 17 MeV. To solve the Atomki anomaly, we consider a model with gauged U(1)R symmetry and identify the new gauge boson with the X boson. We also introduce two SU(2) doublet Higgs bosons and one singlet Higgs boson, and discuss a very stringent constraint from neutrino-electron scattering. It is found that the U(1)R charges of the doublet scalars are determined to evade the constraint. In the end, we find the parameter region in which the Atomki signal and all experimental constraints can be simultaneously satisfied.

scholarly journals Decay widths of the neutral $\mathcal{CP}$ -even MSSM Higgs bosons in the Feynman-diagrammatic approach

2000 ◽  
Vol 16 (1) ◽  
pp. 139-153 ◽  
Author(s):  
S. Heinemeyer ◽  
W. Hollik ◽  
G. Weiglein
Keyword(s):  
Higgs Bosons ◽  
Decay Widths
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