Measuring the Spin and Parity of a Resonance in the Diphoton Decay Channel

Abstract

We present a way to determine the spin and parity of a resonance produced through gluon fusion with a decay to a $\gamma \gamma$ pair based on the transverse momentum and Collins-Soper $\varphi$ distribution. This method also allows one to distinguish between various non-minimal coupling spin-2 scenarios and can be used in parallel to the `standard' method based on the polar angle $\theta$.

Comments: 4 pages, to appear in the proceedings of the 49th Rencontres de Moriond, QCD and High Energy Interactions session, La Thuile, Italy, March 22nd - 29th, 2014