1209.5268 (S. Y. Choi et al.)

Theoretical Basis of Higgs-Spin Analysis in $H \to γγ$ and
$Zγ$ Decays    [PDF]

S. Y. Choi, M. M. Muhlleitner, P. M. Zerwas

We chart the theoretical basis of radiative Higgs decays $H \to \gamma\gamma$ and $Z\gamma$ for measuring the spin of the Higgs particle. These decay channels are complementary to other rare modes such as real/virtual $Z$-boson pair-decays. In systematic helicity analyses the angular distribution for zero-spin is confronted with hypothetical spin-$2^\pm$ and higher assignments to quantify the sensitivity.

View original: http://arxiv.org/abs/1209.5268