Resummation, Evolution, Factorization 2021

Session

ep processes

17 Nov 2021, 16:10

Conveners

ep processes

• Armando Bermudez Martinez (CMS (CMS Fachgruppe QCD))

38. HERAPDF2.0Jets and prospects for parton-branching PDFs with HERA jets data.

Katarzyna Wichmann (DESY)

17/11/2021, 16:10

HERA inclusive and jet data has been used in collinear HERAPDF2.0Jets fits at NLO and NNLO. The addition of the jet data allows a simultaneous fit of parton distribution functions of the proton and determination of the strong coupling alpha_s(M2_Z). In the parton branching (PB) approach, Collinear and TMD parton densities have been determined by fits to inclusive deep inelastic scattering HERA...

35. Transverse momentum dependent distributions in dijet and heavy hadron pair production at EIC

Rafael F. del Castillo (Universidad Complutense de Madrid)

17/11/2021, 16:30

We discuss the measurement of gluon transverse momentum distribution (TMD) in dijet and heavy hadron pair (HHP) production in semi-inclusive deep inelastic scattering. The factorization of these processes in impact parameter space shows the appearance of a specific new soft factor matrix element on top of angular a complex valued anomalous dimensions. We show in detail how these features can...

24. Probing gluon number density with electron-dijet correlations at EIC

Krzysztof Kutak (Institute of Nuclear Physics Polish Academy of Sciences)

17/11/2021, 16:50

We propose a novel way of studying the gluon number density (the so-called Weizsäcker-Williams gluon distribution) using the planned Electron Ion Collider. Namely, with the help of the azimuthal correlations between the total transverse momentum of the dijet system and the scattered electron, we examine an interplay between the effect of the soft gluon emissions (the Sudakov form factor) and...

13. Forward dijet production at the EIC: beyond the TMD factorization

Farid Salazar (UCLA)

17/11/2021, 17:10

Measurements of azimuthal correlations in the production of forward dijets in deep inelastic scattering provide the opportunity to probe the Weizsäcker-Williams gluon transverse momentum dependent (TMD) parton distribution, and the possibility for the discovery of gluon saturation at the future Electron-Ion Collider (EIC). While the TMD factorization is expected to hold near back-to-back...

4. Jet-based TMD measurements with H1 data and machine-learning unfolding

Miguel Arratia (University of California, Riverside)

17/11/2021, 17:30

Recently, jet measurements in deep-inelastic scattering (DIS) events close to Born kinematics have been proposed as a new probe to study transverse-momentum-dependent (TMD) PDFs, TMD fragmentation functions, and TMD evolution. In this talk, I will report measurements of lepton-jet momentum imbalance in high-Q2 DIS events collected with the H1 detector at HERA.  These data bridge DIS...