QEE: invited Theory speakers

Monday 18 Mar 2019, 14:05 → 14:45 Europe/Zurich

Vidyo only

Carlos Vazquez Sierra (Nikhef National institute for subatomic physics (NL)), Lorenzo Sestini (Universita e INFN, Padova (IT)), Olli Lupton (University of Warwick (GB)), Stephen Farry (University of Liverpool (GB))

Vidyo room link (No PIN):

https://vidyoportal.cern.ch/join/0iVXa0gxeX

14:05 → 14:45 Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications (35'+5')

Paper: https://arxiv.org/abs/1901.07573
Abstract: We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for pp collisions at √s=13 TeV. Predictions are provided for both anti-kT bottom- and charm-jet pairs, which are kept differentially with respect to the invariant mass of the jet pair. It is quantified how data in this region can provide sensitivity to the couplings of the Z boson to heavy quarks, and we investigate what precision is needed to compete with LEP. We also discuss how asymmetry and rate measurements can provide constraints on a particular class of new-physics models, which contains gauge bosons with small/moderate couplings to light/heavy quarks and masses of the order of 100 GeV. Predictions are obtained including all relevant QCD and QED/weak contributions up to next-to-leading order, which have been implemented in a Fortran code which allows to directly compute the asymmetric cross sections. We provide all relevant analytic formulas for our computations.

Speakers: Rhorry Gauld (ETH Zurich), Ulrich Andreas Haisch (University of Oxford (GB))

Gauld_18_04_19.pdf