Würzburg 2018 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 76: Suche nach Physik jenseits des Standardmodels IV

T 76.4: Vortrag

Donnerstag, 22. März 2018, 17:15–17:30, Philo-HS4

Search for singly produced lepto-quarks decaying into a quark and a charged lepton of the first or second generation with ATLAS — •Holger Herr and Stefan Tapprogge — Universität Mainz

Recent anomalies observed in flavour physics challenge the very successful standard model. The introduction of new particles which carry lepton and baryon number - the so called lepto-quarks (LQ) - could explain these in a convenient way.

The ATLAS experiment collects data of proton-proton collisions at a center of mass energy of 13 TeV since 2015. The single production channel allows to extend the mass reach probed compared to the search for pair produced lepto-quarks. This comes at the cost of introducing an additional dependency on the quark-lepton-LQ coupling. The quark emitting the LQ transitions into a charged lepton. This leads to a final state containing a charged lepton and anti-lepton as well as a quark. So far only charged leptons of the first and second generation are considered.

In this talk signal kinematics, expected backgrounds, the selection strategy as well as first sensitivity estimates will be presented.