Objectif The discovery of a new particle, compatible with the Higgs boson, at the Large Hadron Collider, marked a major triumph of the Standard Model of particle physics. However, many fundamental questions remain and direct or indirect evidence of new physics can be probed with the large number of proton-proton collision data, collected in 2011 and 2012 at 7 and 8 TeV centre-of-mass energy.With this proposal we plan to exploit the large sample of top-quark pair events that is already recorded, and the sample that will be collected from 2015 onwards, at the ultimate energy of 14 TeV. In particular we plan to study the coupling of top quarks to neutral bosons, by measuring the production of associated tt̄γ, tt̄Z and tt̄H. Anomalous electromagnetic or weak couplings could be uncovered by studying kinematic properties of the resulting photon or Z-boson, once the signal is established. By studying the tt̄H production in detail the mechanism of Yukawa coupling of the Higgs boson to fermions will be tested, possibly providing important confidence in the characterisation of the new boson.In all measurements we plan to include the tt̄ dilepton channel, that, despite the smaller branching fraction has typically superior signal-to-noise ratios. An essential part of the programme will be the calibration of the b-tagging algorithms, where we plan to use tt̄ events. For associated Higgs production we will explore the decays H→ bb̄ and H→ γγ. Champ scientifique natural sciencesphysical sciencestheoretical physicsparticle physicsparticle acceleratornatural sciencesphysical sciencestheoretical physicsparticle physicsfermionsnatural sciencesphysical sciencestheoretical physicsparticle physicsz bosonsnatural sciencesphysical sciencestheoretical physicsparticle physicsquarksnatural sciencesphysical sciencestheoretical physicsparticle physicshiggs bosons Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Thème(s) ERC-CG-2013-PE2 - ERC Consolidator Grant - Fundamental Constituents of Matter Appel à propositions ERC-2013-CoG Voir d’autres projets de cet appel Régime de financement ERC-CG - ERC Consolidator Grants Institution d’accueil RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITAT BONN Contribution de l’UE € 1 964 088,00 Adresse REGINA PACIS WEG 3 53113 Bonn Allemagne Voir sur la carte Région Nordrhein-Westfalen Köln Bonn, Kreisfreie Stadt Type d’activité Higher or Secondary Education Establishments Contact administratif Daniela Hasenpusch (Ms.) Chercheur principal Markus Cristinziani (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée Bénéficiaires (1) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire RHEINISCHE FRIEDRICH-WILHELMS-UNIVERSITAT BONN Allemagne Contribution de l’UE € 1 964 088,00 Adresse REGINA PACIS WEG 3 53113 Bonn Voir sur la carte Région Nordrhein-Westfalen Köln Bonn, Kreisfreie Stadt Type d’activité Higher or Secondary Education Establishments Contact administratif Daniela Hasenpusch (Ms.) Chercheur principal Markus Cristinziani (Dr.) Liens Contacter l’organisation Opens in new window Site web Opens in new window Coût total Aucune donnée