Abstract
A complete one-loop prediction for the single production of the neutral Higgs bosons in association with a photon in electron-positron collisions is presented in the framework the minimal supersymmetric standard model (MSSM), paying special attention to the individual contribution from each type of diagram. This process has no amplitude at tree level and is hence directly sensitive to one-loop impacts and the underlying dynamics of Higgs. To investigate the effect of the new physics, four different scenarios, which include a Higgs boson with mass and couplings consistent with those of the discovered Higgs boson and a considerable part of parameter space allowed by the bounds from the searches for additional Higgs bosons and sparticles, are chosen in the MSSM. The dependence of the cross section in both the standard model(SM) and MSSM on the center-of-mass energy is examined by considering the polarizations of the initial electron and positron beams. The effect of individual contributions from each type of one-loop diagram on the total cross section is also investigated in detail. Furthermore, the total cross sections of $e^- e^+ \rightarrow \gamma h^0$ as well as $e^- e^+ \rightarrow \gamma A^0$ are scanned over the plane $m_A-\tan\beta$ for each scenario. The full one-loop contributions are crucial for the analysis of beyond the SM physics at a future electron-positron collider.
Highlights
Despite its many successes, the standard model (SM) leaves us with a lot of questions to be answered, such as the hierarchy problem, the origin of flavor, etc
Higgs boson and a considerable part of their parameter space is allowed by the bounds from the searches for additional Higgs bosons and supersymmetric particles, are chosen
Note that all of the considered scenarios include a CP-even Higgs boson with mass about 125 GeV and couplings consistent with those of the discovered Higgs boson, and a considerable part of their parameter space is allowed by the bounds from the searches for additional Higgs bosons and supersymmetric particles
Summary
The standard model (SM) leaves us with a lot of questions to be answered, such as the hierarchy problem, the origin of flavor, etc. The single production of the neutral Higgs bosons in association with a photon in electron-positron collisions is reinvestigated in the framework MSSM, paying special attention to the individual contribution from each type of diagram In this aim, it is examined that how and how much the individual contributions from each type of diagram could amplify or lessen the h0γ signal at a future e−eþ collider. It is examined that how and how much the individual contributions from each type of diagram could amplify or lessen the h0γ signal at a future e−eþ collider For this aim, four different benchmark scenarios, which have a Higgs boson with mass and couplings consistent with those of the discovered.
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