Results 1 to 10 of about 49,890 (211)

Rapidity-only TMD factorization at one loop

open access: yesJournal of High Energy Physics, 2023
Typically, a production of a particle with a small transverse momentum in hadron-hadron collisions is described by CSS-based TMD factorization at moderate Bjorken x B ~ 1 and by k T -factorization at small x B . A uniform description valid for all x B is
Ian Balitsky
doaj   +1 more source

Quark and gluon helicity evolution at small x: revised and updated

open access: yesJournal of High Energy Physics, 2022
We revisit the problem of small Bjorken-x evolution of the gluon and flavor-singlet quark helicity distributions in the shock wave (s-channel) formalism.
Florian Cougoulic   +3 more
doaj   +1 more source

Gluon-mediated inclusive Deep Inelastic Scattering from Regge to Bjorken kinematics

open access: yesJournal of High Energy Physics, 2022
We revisit high energy factorization for gluon mediated inclusive Deep Inelastic Scattering (DIS) for which we propose a new semi-classical approach that accounts systematically for the longitudinal extent of the target in contrast with the shockwave ...
Renaud Boussarie, Yacine Mehtar-Tani
doaj   +1 more source

Machine learning of log-likelihood functions in global analysis of parton distributions

open access: yesJournal of High Energy Physics, 2022
Modern analysis on parton distribution functions (PDFs) requires calculations of the log-likelihood functions from thousands of experimental data points, and scans of multi-dimensional parameter space with tens of degrees of freedom.
DianYu Liu, ChuanLe Sun, Jun Gao
doaj   +1 more source

The ultra-high-energy neutrino-nucleon cross section: measurement forecasts for an era of cosmic EeV-neutrino discovery

open access: yesJournal of High Energy Physics, 2022
Neutrino interactions with protons and neutrons probe their deep structure and may reveal new physics. The higher the neutrino energy, the sharper the probe.
VĂ­ctor B. Valera   +2 more
doaj   +1 more source

New tool for kinematic regime estimation in semi-inclusive deep-inelastic scattering

open access: yesJournal of High Energy Physics, 2022
We introduce a new phenomenological tool based on momentum region indicators to guide the analysis and interpretation of semi-inclusive deep-inelastic scattering measurements.
The Jefferson Lab Angular Momentum (JAM) collaboration   +9 more
doaj   +1 more source

Dijet azimuthal correlations in p-p and p-Pb collisions at forward LHC calorimeters

open access: yesJournal of High Energy Physics, 2022
We present a state-of-the-art computation for the production of dijets in proton-proton and proton-lead collisions at the LHC, in forward rapidity domains covered by the ATLAS calorimeter and the planned FoCal extension of the ALICE detector.
M. Abdullah Al-Mashad   +6 more
doaj   +1 more source

NLO JIMWLK evolution with massive quarks

open access: yesJournal of High Energy Physics, 2022
NLO evolution of the Jalilian-Marian-Iancu-McLerran-Weigert-Leonidov-Kovner (JIMWLK) equation with massless quarks was derived a few years ago. We make a step further to compute the evolution kernels focusing on the effects due to finite quark masses. To
Lin Dai, Michael Lublinsky
doaj   +1 more source

T-odd leading-twist quark TMDs at small x

open access: yesJournal of High Energy Physics, 2022
We study the small-x asymptotics of the flavor non-singlet T-odd leading-twist quark transverse momentum dependent parton distributions (TMDs), the Sivers and Boer-Mulders functions.
Yuri V. Kovchegov, M. Gabriel Santiago
doaj   +1 more source

A multi-channel U-Matrix model of hadron interaction at high energy

open access: yesJournal of High Energy Physics, 2023
The present phenomenological study investigates a multi-channel model of high-energy hadron interactions by considering a full parton configurations space and the U-matrix unitarisation scheme of the elastic amplitude, comparing it to the two-channel ...
Rami Oueslati
doaj   +1 more source

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