MOCa 2018: Materia Oscura en Colombia

Search for dark matter produced in association with a Higgs boson decaying to pair of bottom quarks using 80fb−1 of proton collisions at s=13 TeV with ATLAS detector

31 Jul 2018, 11:00

30m

Other Institutes

Dark Matter

Speaker

Dilia Maria Portillo Quintero (Centre National de la Recherche Scientifique (FR))

Description

A search for dark matter production in association with a Higgs boson
decaying to $b$-quarks is performed using $pp$ collisions at a centre-of-mass
energy of $\sqrt{s}=13\mathrm{TeV}$. The dataset has an integrated
luminosity of $80{\mathrm{fb}}^{-1}$and was recorded with the ATLAS
detector at the Large Hadron Collider. Selected collision events comprise
large missing transverse momentum and either two $b$-tagged small
radius jets or a single large radius jet containing two $b$-tagged
subjets. The identification of these subjects is based on a jet algorithm
where the radius parameter is shrinked as the transverse momentum
increases. The results are interpreted in the context of a simplified
model ($Z^{\prime }$-2HDM) which describes the interaction of dark matter
and standard model particles via new heavy mediator particles. Also
model independent limits on the fiducial cross-section for Higgs +
missing transverse momentum production are provided.

Presentation materials

MonoH_MOCA_31_7_2018_key.pdf