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Münster 2017 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 39: Higgs-Physik (Theorie) 1

T 39.4: Vortrag

Dienstag, 28. März 2017, 11:45–12:00, VSH 06

Constraining the Higgs trilinear coupling from single-Higgs processes in the SMEFTStefano Di Vita1, Christophe Grojean1,2, Giuliano Panico3, Marc Riembau1,3, and •Thibaud Vantalon1,31DESY, Notkestrasse 85, D-22607 Hamburg, Germany — 2Institut für Physik, Humboldt-Universität zu Berlin, D-12489 Berlin, Germany — 3IFAE, Barcelona Institute of Science and Technology (BIST) Campus UAB, E-08193 Bellaterra, Spain

In scenarios where the only anomalous contribution to single-Higgs observables originates from the Higgs cubic self coupling, it has been recently noticed that the bounds on the Higgs trilinear from those observables might complement and compete with the constraints coming from double Higgs production. We study to what extent this statement holds true when one considers a general deviation on Higgs couplings in the EFT framework. We show that inclusive observables are not enough to isolate the Higgs trilinear effect from the other deviations. However, we present a strategy to disentangle this flat direction using the kinematic information in the differential cross sections.

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