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Constraining the Higgs valence contribution in the proton

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arxiv 2002.01688 v2 pith:3GSNXLPF submitted 2020-02-05 hep-ph hep-ex

classification hep-phhep-ex
keywords higgsvalencecontributionfunctioninvestigatepartonprocessproton
verification ladder T0 review T1 audit T2 compute T3 formal
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Non-perturbative gauge-invariance under the strong and the weak interactions dictates that the proton contains a non-vanishing valence contribution from the Higgs particle. By introducing an additional parton distribution function (PDF), we investigate the experimental consequences of this prediction. The Herwig 7 event generator and a parametrized CMS detector simulation are used to obtain predictions for a scenario amounting to the LHC Run II data set. We use those to assess the impact of the Higgs PDF on the pp->ttbar process in the single lepton final state. Comparing to nominal simulation we derive expected limits as a function of the shape of the valence Higgs PDF. We also investigate the process pp->ttZ at the parton level to add further constraints.

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    Lattice simulations of an SU(3) gauge theory with a fundamental Higgs reveal new parity-degenerate and charged states that ordinary perturbation theory does not predict.

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