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HEJ 2: High Energy Resummation for Hadron Colliders

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arxiv 1902.08430 v1 pith:3X2S3EXQ submitted 2019-02-22 hep-ph

HEJ 2: High Energy Resummation for Hadron Colliders

classification hep-ph
keywords bosonenergyeventgeneratorhiggshighjetsprocesses
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present HEJ 2, a new implementation of the High Energy Jets formalism for high-energy resummation in hadron-collider processes as a flexible Monte Carlo event generator. In combination with a conventional fixed-order event generator, HEJ 2 can be used to obtain greatly improved predictions for a number of phenomenologically important processes by adding all-order logarithmic corrections in $\hat{s}/p_\perp^2$. A prime example for such a process is the gluon-fusion production of a Higgs boson in association with widely separated jets, which constitutes the dominant background to Higgs boson production in weak-boson fusion.

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