Diffraction and Low-x 2022

Session

Discussion: Low x, PDFs, hadronic final state

Discussion: Low x

Not scheduled

Corigliano Calabro, Italy

80. News from MSHT

Low x, PDFs and hadronic final states

The latest developments from MSHT including N3LO predictions, which have strong impact at low-x, will be reviewed.

87. The parton distributions at small momentum fractions

Low x, PDFs and hadronic final states

When parton momentum faction 𝑥 of hadron becomes small, an enhancement from small-𝑥 logarithms shows up, and eventually, we enter into a partonic saturation region. A consistent treatment of the small-𝑥 logarithms requires an all-order resummation which can be achieved with the BFKL formalism. However, a boundary to delineate the small-𝑥 resummation region from saturation one is ambiguous. In...

85. Theoretical, parametrization, and sampling uncertainties in parton distributions: a view from CT

Low x, PDFs and hadronic final states

I summarize recent studies of various types of uncertainties in the global analysis of parton distribution functions (PDFs) by the CTEQ-TEA group. Sampling of the multivariate PDF parameter space introduces an important source of uncertainty that has implications for critical collider applications such as W boson mass measurement and Higgs physics. Parametrization and sampling uncertainties...