Friday, April 12, 2013

1304.2654 (Daniel Boer et al.)

Determining the Higgs spin and parity in the diphoton decay channel    [PDF]

Daniel Boer, Wilco J. den Dunnen, Cristian Pisano, Marc Schlegel
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.
View original: http://arxiv.org/abs/1304.2654

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