Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-03-10
Phys.Rev. D60 (1999) 075016
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 2 figures, RevTeX
Scientific paper
10.1103/PhysRevD.60.075016
If a heavy Dirac monopole exists, the light-to-light scattering below the monopole production threshold is enhanced due to strong coupling of monopoles to photons. At the next Linear Collider with electron beam energy 250 GeV this photon pair production could be observable at monopole masses less than 2.5-6.4 TeV in the $e^+e^-$ mode or 3.7-10 TeV in the $\gamma\gamma$ mode, depending on the monopole spin. At the upgraded Tevatron such an effect is expected to be visible at monopole masses below 1-2.5 TeV. The strong dependence on the initial photon polarizations allows to find the monopole spin in experiments at $e^+e^-$ and $\gamma\gamma$ colliders. We consider the $Z\gamma$ production and the $3\gamma$ production at $e^+e^-$ and $pp$ or $p\bar{p}$ colliders via the same monopole loop. The possibility to discover these processes is significantly lower than that of the $\gamma\gamma$ case.
Ginzburg Ilya F.
Schiller Avraham
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