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Title

Search for dark matter in association with a Higgs boson decaying to b -quarks in pp collisions at √s = 13 TeV with the ATLAS detector

CollaborationWith : Ancu, Lucian Stefan / Bilbao De Mendizabal, Javier / Calace, Noemi / Chatterjee, Avishek / Clark, Allan Geoffrey / Coccaro, Andrea / Delitzsch, Chris Malena / Della Volpe, Domenico / Ferrere, Didier / Gadomski, Szymon / Golling, Tobias / Gonzalez Sevilla, Sergio / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / Khoo, Teng Jian / Lionti, Anthony Eric / March Ruiz, Luis / Mermod, Philippe / Miucci, Antonio / Nackenhorst, Olaf / Paolozzi, Lorenzo / Ristic, Branislav / Schramm, Steven / Sfyrla, Anna / Vallecorsa, Sofia / Wu, Xin
Published in Physics Letters. B. 2016
Collection SCOAP3
Abstract A search for dark matter pair production in association with a Higgs boson decaying to a pair of bottom quarks is presented, using 3.2 fb −1 of pp collisions at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC. The decay of the Higgs boson is reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets, or a single large-radius jet with substructure. The observed data are found to be consistent with the expected backgrounds. Results are interpreted using a simplified model with a Z′ gauge boson mediating the interaction between dark matter and the Standard Model as well as a two-Higgs-doublet model containing an additional Z′ boson which decays to a Standard Model Higgs boson and a new pseudoscalar Higgs boson, the latter decaying into a pair of dark matter particles.
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ATLAS COLLABORATION. Search for dark matter in association with a Higgs boson decaying to b -quarks in pp collisions at √s = 13 TeV with the ATLAS detector. In: Physics Letters. B, 2016. https://archive-ouverte.unige.ch/unige:89831

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Deposited on : 2016-12-05

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