QCD Evolution Workshop 2023

Session

DPS

24 May 2023, 09:00

Auditorium Joliot Curie (IJCLab, Orsay (FRANCE))

Conveners

DPS

• Simone Rodini

73. Pion and kaon fragmentation functions at next-to-next-to-leading order

Emanuele Roberto Nocera

24/05/2023, 09:00

I discuss a determination of unpolarised charged pion and kaon fragmentation functions from a set of single-inclusive electron-positron annihilation and lepton-nucleon semi-inclusive deep-inelastic scattering data. The determination includes next-to-next-to-leading order QCD corrections to both processes, and is carried out in a framework that combines a neural-network parametrisation of...

71. Deducing the correlated spatial structure of the proton from the elastic form factors to double parton distributions

Prof. Simonetta Liuti

24/05/2023, 09:25

Mapping the 3D structure of the proton in terms of its spinning quark and gluon constituents is one of the main goals of current hadronic physics investigations. Generalized parton distributions can provide part of the solution, connecting through Fourier transformation to the single particle spatial density of quarks and gluons with a given longitudinal momentum fraction, x. The physical...

64. Momentum sum rule and factorization of double parton distributions

Krzysztof Golec-Biernat (Institute of Nuclear Physics, Cracow, Poland)

24/05/2023, 09:50

We show that the momentum sum rule is a necessary condition for factorization of double parton distributions into a product of two single parton distributions for small values of the parton momentum fractions $x$ and large enough values of the evolution scale $Q^2$. This is a somewhat surprising result since the momentum sum rule involves integration over all values of the momentum...

49. Double parton scattering in jet production at the LHC

Anna Kulesza (University of Münster)

24/05/2023, 10:15

Precise theoretical predictions at the LHC require a thorough understanding of double parton scattering (DPS), a simplest form of multiparton interactions. Due to high abundance of jet events in pp collisions, multiple jet production plays a special role among various processes where DPS can occur. In this talk we discuss the status of DPS studies for this class of processes, focusing in...