title: Exact Bremsstrahlung Function in N=2 Superconformal Field Theories.
abstract: We propose an exact formula for the energy radiated by an accelerating quark in N=2 superconformal theories in four dimensions. This formula reproduces the known bremsstrahlung function for N=4 theories and provides a prediction for all the perturbative and instanton corrections in N=2 theories. We perform a perturbative check of our proposal up to three loops.
authors.affiliation: Departament de Física Fonamental, Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain.
authors.forename: Bartomeu
authors.initials: B
authors.lastname: Fiol
authors.affiliation: Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100, Israel.
authors.forename: Efrat
authors.initials: E
authors.lastname: Gerchkovitz
authors.affiliation: Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100, Israel.
authors.forename: Zohar
authors.initials: Z
authors.lastname: Komargodski