22-29 July 2015
Europe/Vienna timezone

Constraining new physics in the Higgs sector using differential and fiducial cross section measurements from the LHC

Jul 23, 2015, 10:25 AM
15m
Großer Festsaal

Großer Festsaal

talk Higgs and New Physics Higgs and New Physics

Speakers

Andrew Pilkington (University Of Manchester) Bob Kowalewski (University of Victoria (CA)) Dag Gillberg (CERN) Dr Florian Urs Bernlochner (Universitaet Bonn (DE)) Holger Schulz (Humboldt-Universitaet zu Berlin (DE)) Michaela Queitsch-Maitland (University of Manchester (GB)) Yanping Huang (Deutsches Elektronen-Synchrotron (DE))

Description

In 2014 ATLAS published a first set of $H \to \gamma\gamma$ and $H \to 4 \ell$ differential fiducial cross sections and CMS is finalizing similar results. These measurements are carried out close to the experimental fiducial region and have minimal underlying model dependencies and can be used to constrain beyond the Standard Model physics scenarios coupling to the Higgs sector. Using these published measurements and associated covariances, we characterize possible deviations from the SM with the so-called kappa framework and compare the sensitivity to the official ATLAS results. We then present limits on a range of Spin 2 Higgs impostor scenarios and carry out a reinterpretation of the measured cross sections as production mechanism coupling strengths.

Primary authors

Andrew Pilkington (University Of Manchester) Bob Kowalewski (University of Victoria (CA)) Dag Gillberg (CERN) Dr Florian Urs Bernlochner (Universitaet Bonn (DE)) Holger Schulz (Humboldt-Universitaet zu Berlin (DE)) Michaela Queitsch-Maitland (University of Manchester (GB)) Yanping Huang (Deutsches Elektronen-Synchrotron (DE))

Presentation materials