Resummation, Evolution, Factorization 2023 (REF2023)

Session

High energy

24 Oct 2023, 14:00

Aula M1 (Facultad de Físicas)

15. Resummation Scales in Collinear and Sudakov Processes at Hadron Colliders

Giuseppe Bozzi (University of Cagliari)

24/10/2023, 14:00

Talk

QCD calculations for collider physics make use of perturbative solutions of renormalisation group equations (RGEs). RGE solutions can contribute significantly to systematic uncertainties of theoretical predictions for physical observables. We propose a method to express these systematic effects in terms of resummation scales, using techniques borrowed from soft-gluon resummation approaches. We...

8. Weak vector boson production at hadron colliders: combined QCD-QED transverse-momentum resummation formalism

Andrea Autieri (Instituto de Física Corpuscular (IFIC), Valencia (Spain))

24/10/2023, 14:30

Talk

The high level of experimental precision achieved at hadron colliders requires competitive theoretical predictions in order to extract fundamental SM parameters, such as the W boson mass.
Theoretical efforts should therefore be directed towards relevant kinematic distributions, such as the transverse momentum (pT) spectrum of the W and Z bosons and their ratio.
In this talk, essentially...

28. Bayesian inference for PDFs

Tommaso Giani (Nikhef)

24/10/2023, 15:00

Talk

The determination of Parton Distribution Functions (PDFs) is an example of inverse problem: a model is sought knowing a finite set of experimental observations. Given the fact that the model is a continuous function, i.e. an element of an infinite dimensional space, its determination from a discrete set of data is notoriously a ill-posed problem. In the currently used methodologies for PDF...

35. Higgs + hadron/jet inclusive production process with full next-to-leading accuracy

Gabriele Gatto

24/10/2023, 16:00

Talk

We investigate the Higgs + hadron/jet inclusive production process at the LHC in the hybrid factorization scheme with full next-to-leading accuracy in the all-order resummation of energy logarithms. We present preliminary results for different key observables, with the aim of probing the impact of high-energy resummation in the Higgs production mechanism.

20. Determining $\alpha_s$ from Thrust with Power Corrections

Miguel Benitez-Rathgeb (Universidad de Salamanca)

24/10/2023, 16:30

Talk

In recent articles, the discussion on the treatment of Power Corrections in the three-jet limit, along with its influence on precision $\alpha_s$ determinations from fits to event shape experimental data, has attracted a lot of attention. On the basis of a factorization formula for the $e^+e-$ thrust distribution, derived within soft-collinear effective theory, we discuss the treatment of...