Determining the Higgs spin and parity in the di-photon decay channel using gluon polarization

TL;DR

This paper explores how the linear polarization of gluons within unpolarized protons can be utilized to determine the spin and parity of the Higgs-like boson observed at the LHC, focusing on calculating the polarization degree.

Contribution

It introduces a method to use gluon polarization measurements to infer the Higgs boson's quantum numbers, providing a novel approach in particle physics analysis.

Findings

Calculated the degree of gluon polarization inside unpolarized protons.

Proposed a new technique for determining Higgs spin and parity.

Highlighted the potential of gluon polarization as a diagnostic tool.

Abstract

Gluons inside an unpolarized proton are in general linearly polarized. This polarization can, in principle, be used to determine the spin and parity of the newly found Higgs-like boson at the LHC. We focus here on the calculation of the degree of polarization.