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Graviton-induced Bremsstrahlung

Erik Dvergsnes·Per Osland·Nurcan Ozturk
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Abstract

We discuss photon Bremsstrahlung induced by virtual graviton exchange in proton-proton interactions at hadronic colliders, resulting from the exchange of Kaluza-Klein excitations of the graviton. The relevant subprocesses, gg to G to e^+e^-gamma and q barq to e^+e^-gamma are discussed in both the ADD and the RS scenarios. Although two-body final states (or real graviton emission) would presumably be the main discovery channels, a search for three-body final states could be worthwhile since such events have characteristic features that could provide additional confirmation. In particular, the k_perp-distribution of the photon is in both scenarios harder than that of the Standard-model background.

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Erik Dvergsnes, Per Osland, Nurcan Ozturk. 2003-02-10. Graviton-induced Bremsstrahlung. https://doi.org/10.1103/physrevd.67.074003

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