Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-06-16
Phys.Rev. D59 (1999) 013008
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, RevTeX, axodraw, 3 figures, comment added
Scientific paper
10.1103/PhysRevD.59.013008
We justify the feasibility of substituting a photon leg by a neutrino current in the Euler-Heisenberg Lagrangian to obtain an effective Lagrangian for the process $\gamma\nu\to\gamma\gamma \nu$ and its crossed reactions. We establish the link between these processes and the four-photon scattering in both the Standard Model and the effective theory. As an application, we compute the processes $\gamma\nu\to\gamma\gamma\nu$ and $\gamma\gamma\to\gamma{\nu}\bar\nu$, give their polarized cross sections, and show how to use the $\gamma\gamma\to\gamma\gamma$ results as a check. We settle the question about the disagreement between two computations in the literature concerning the reaction $\gamma\gamma\to \gamma \nu\bar\nu$.
Abada Abdellatif
Matias Joaquim
Pittau Roberto
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