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arXiv · 1304.2654

Determining the Higgs spin and parity in the diphoton decay channel

Daniel Boer·Wilco J. den Dunnen·Cristian Pisano·Marc Schlegel
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Abstract

We calculate the diphoton distribution in the decay of arbitrary spin-0 and spin-2 bosons produced from gluon fusion, taking into account the fact that gluons inside an unpolarized proton are generally linearly polarized. The gluon polarization brings about a difference in the transverse momentum distribution of positive and negative parity states. At the same time, it causes the azimuthal distribution of the photon pair to be non-isotropic for several spin-2 coupling hypotheses, allowing one to distinguish these from the isotropic scalar and pseudoscalar distributions.

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Daniel Boer, Wilco J. den Dunnen, Cristian Pisano, Marc Schlegel. 2013-04-09. Determining the Higgs spin and parity in the diphoton decay channel. https://doi.org/10.1103/physrevlett.111.032002

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