PHYSTAT-Flavour 2020

Session

Session 3

21 Oct 2020, 14:00

Conveners

Session 3

• Matthew William Kenzie (University of Warwick (GB))
• Olaf Behnke (Deutsches Elektronen-Synchrotron (DE))

Session 3

• Louis Lyons (Imperial College (GB))
• Hans Peter Dembinski (Max-Planck-Institute for Nuclear Physics, Heidelberg)

Presentation materials

session3-part1.mp4

session3-part2.mp4

5. Using sWeights to disentangle signal and background

Michael Schmelling (Max-Planck-Gesellschaft (DE))

21/10/2020, 14:00

When an observable density is a superposition of signal and background PDFs that each factorise in a ''discriminant'' and a ''control'' variable, sWeights allow one to determine the signal density in the control variable using information from only the discriminant variable.
After reviewing the basics of the method and casting the formalism into the framework of orthogonal functions, the talk...

6. Fitting weighted events

Christoph Michael Langenbruch (Rheinisch Westfaelische Tech. Hoch. (DE))

21/10/2020, 14:45

Fits of weighted events, for example to correct for acceptance effects or to statistically subtract background events using sWeights, have recently seen increasing use in the flavour physics community. This talk will discuss the determination of parameters and their uncertainties using weighted events, with particular focus on unbinned fits of weighted data.

12. Goodness of Fit for unbinned data

Francois Rene Le Diberder

21/10/2020, 15:45

10. Global Fits

Peter Stangl (University of Bern)

21/10/2020, 16:30

Global fits are an indispensable tool in the search for New Physics (NP). On the one hand, they can provide interpretations of measurements that deviate from Standard Model (SM) predictions, and on the other hand, they allow using the wealth of experimental data for testing the viability of NP models. Being "global" means that these fits include hundreds of observables, whose theoretical...

13. Final remarks and closing of the workshop

Diego Tonelli (INFN Trieste, Italy), Hans Peter Dembinski (Max-Planck-Institute for Nuclear Physics, Heidelberg), Louis Lyons (Imperial College (GB)), Matthew William Kenzie (University of Warwick (GB)), Olaf Behnke (Deutsches Elektronen-Synchrotron (DE))

21/10/2020, 17:15