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T: Fachverband Teilchenphysik

T 83: Elektroschwache Wechselwirkung II

T 83.6: Vortrag

Donnerstag, 22. März 2018, 17:45–18:00, Z6 - SR 1.005

Study of Unfolding with Low Statistics in the Leptonic WZ Final State with Simulations of the ATLAS Detector at the LHC — •Tim Herrmann, Carsten Bittrich, Franziska Iltzsche, Michael Kobel, Joany Manjarres, and Stefanie Todt — TU Dresden, Germany

In this talk the unfolding approach will be analyzed for low statistics in order to determine if it is the best suited for the P-value resp. CLs calculation in statistical tests. The unfolding approach is studied on the example of the triple gauge coupling in the fully leptonic WZ final state. The triple gauge coupling from the Standard Model is sensitive to the presence of new physics. New physics can manifest as modified cross section and kinematics distributions. For this study the sensitive kinematic distribution of the transverse mass of the WZ system is used.

The study show that for comparisons between data and theory predictions detector effects need to be considered, to do so two alternatives are possible either the theory has to be folded or the data unfolded. In this study, no significant advantage of using the unfolding approach instead of the folding approach have been found for computer based statistical tests using P-values resp. CLs.