Transverse-momentum resummation for the signal-background interference in the $H\to \gamma \gamma$ channel at the LHC

Abstract

We present an upgraded calculation of the effects of resonance-continuum interference for the Higgs boson decaying to two photons at the Large Hadron Collider, at next-to-leading order in the strong coupling ${\alpha }_S$, $O({\alpha }_S^3)$, and including transverse-momentum ($q_T$) resummation at next-to-leading logarithmic accuracy. We study the importance of the interference contribution in different transverse-momentum regions, with a particular focus on the low $q_T$ region $q_T^2<<Q^2$ (with $Q^2$ being the invariant diphoton mass) where resummation becomes essential for a reliable calculation.

9 pages, 7 fiugres

References in corpus (8)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Parton distributions for the LHC
• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• Drell-Yan production at small q_T, transverse parton distributions and the collinear anomaly
• Higgs boson production at the LHC: transverse-momentum resummation and rapidity dependence
• Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy