Exact quark-mass dependence of the Higgs-photon form factor at three loops in QCD
Marco Niggetiedt
Abstract
A bstract We follow up on our discussion of the exact quark-mass dependence of the Higgs-gluon form factor at three loops in QCD [1] and turn our attention to the closely related Higgs-photon form factor. Similarly to our previous work, we intend to examine the form factor for the decay of a Higgs-boson with variable mass into two photons at the three-loop level in QCD. The set of master integrals is known numerically due to prior work on the Higgs-gluon form factor and is exploited to obtain expansions around the threshold as well as in the high-energy limit. Our results may be utilised to derive the photonic decay rate of the Higgs-boson through next-to-next-to-leading order.
Topics & Concepts
PhysicsForm factor (electronics)Quantum chromodynamicsPhotonWork (physics)Particle physicsQuantum electrodynamicsSet (abstract data type)Infinite setMathematical physicsVariable (mathematics)Theoretical physicsElementary particleQuantum mechanicsFactor (programming language)Exact solutions in general relativityUpper and lower boundsConnection (principal bundle)Loop (graph theory)Branching fractionParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research