Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 36: Higgs

T 36.2: Vortrag

Dienstag, 20. März 2018, 16:50–17:05, Z6 - SR 1.010

Next-to-leading order reweighting method for simulated processes of gluon fusion Higgs boson production — •Artur Gottmann¹, Josry Metwally¹, Andrew Gilbert², René Caspart¹, Roger Wolf¹, and Günter Quast¹ — ¹Karlsruhe Institute of Technology — ²European Organization for Nuclear Research

The precision of the gluon fusion Higgs boson production cross section at next-to-leading order QCD plus parton shower accuracy with Powheg can be improved by treating the calculation as a multiscale problem: The calculation is split into the individual differential distributions from only the top quark, only the bottom quark and the top-bottom interference.

In Two-Higgs-Doublet models like the MSSM, where the distributions themselves in addition depend on the model parameters, this approach can be used to naturally incorporate the dependencies of the differential distributions on the model parameters into the calculation. In the MSSM all contributions to gluon fusion production, which can be associated to the Higgs-bottom quark coupling, like Δ b corrections, have also been taken into account as next-to-leading order SUSY corrections. Non-considered SUSY contributions to the differential cross section have been checked to lie below 5%. This method has been exploited for the first time for the recently published search of CMS for additional neutral MSSM Higgs bosons on the LHC Run II data of 2016.