Electroweak radiative correction

We investigate the branching ratio of the radiative decay b → sγ in the 3-4-1-1 model with arbitrary charge parameters p,q. If the spontaneous breaking of the gauge group symmetry down to the electroweak group is around a few TeVs, the predictions for the branching ratio Br(b → sγ) and meson mixing are consistent with experimental constraints.

12p vispiderman 15-06-2023 5 2   Download

The one-loop contribution axion-photon-photon coupling is presented in the framework of the 3-3-1 model, in which the loop diagrams are finite. The decay of axion into two photons is demonstrated. This study shows that it is easy to fulfill dark matter candidate conditions for the axion in the model.

8p meyerowitz 25-12-2021 16 0   Download

This paper calculate full O(α) electroweak radiative corrections and O(α 3 ) initial state radiation (ISR) corrections to e−e + → W−W+ with initial beam polarization effects. In phenomenological results, we study the impact of electroweak and ISR corrections on cross sections as well as their relevant distributions. We find that the corrections are order of 10% contributions. They are sizable contributions and should be taken into account at future lepton colliders.

10p nguyenxuankha_bevandan 14-08-2020 8 1   Download

We explore constraints from positivity of scalar mass spectra in the 3-3-1 model with CKS mechanism. The conditions for positivity of the diagonal elements are most important since other constraints are followed from the first ones.

14p capheny 28-02-2020 11 1   Download

We present full electroweak radiative corrections to ݁e+ e- ZH with the initial beam polarizations at the International Linear Collider (ILC). The calculation is checked numerically by using three consistency tests that are ultraviolet finiteness, infrared finiteness, and gauge parameter independence.

12p danhvi10 22-11-2018 25 1   Download