Measuring B0s oscillations using excellent tracking at LHCb

Date

Tuesday, April 16, 2024
10:00 - 11:00

Abstract

In this talk, I will illustrate some aspects of tracking in a particle physics experiment using the example of Bs0 --> Ds-+ K+- pi+ pi- decays, illustrating the importance of excellent tracking and momentum resolution for this kind of precision measurement. This 2020 measurement of the B0s decays using the full LHCb run 1 and 2 data sets yielded a world-best measurement of the B0s oscillation frequency Delta(ms) (at the time), and a measurement of the CKM angle gamma. Towards the end of the talk, I will spend some time on fast parametrisations I use for studies for LHCb Upgrade 2 using multidimensional Chebyshev fits which are linear in fit parameters, a powerful and fast technique that is applicable and useful throughout particle physics (and indeed beyond).

Organiser

Nikhef

Venue

Veltman Center

Room number

H331

Category

Colloquium

Topics

gravitational and astroparticle physics, high energy physics

Speakers

Manuel Schiller (Glasgow)