Dark gauge bosons: LHC signatures of non-abelian kinetic mixing
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Engineering topics
Ovanesyan, Grigory
Publications and source records attributed to Ovanesyan, Grigory.
One-loop correction to heavy dark matter annihilation
In this report, we calculate the one-loop corrections to TeV-scale dark matter annihilation in a model where the dark matter is described by an SU ( 2 ) L triplet of Majorana fermions, such as the wino. We use this framework to determine the high- and low-scale MS ¯ matching coefficients at both the dark matter and weak boson mass scales at one loop. Part of this calculation has previously been performed in the literature numerically; we find our analytic result differs from the earlier work and discuss potential origins of this disagreement. Our finding is used to extend the dark matter annihilation rate to next-to-leading logarithmic + O ( α 2 ) corrections ( NLL ' ), which enables a precise determination of indirect detection signatures in present and upcoming experiments.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗