Results 51 to 60 of about 3,464 (222)

DETERMINATION OF PARTON DISTRIBUTION FUNCTIONS IN NUCLEI [PDF]

Non-Perturbative QCD, 2002
Nuclear parton distribution functions are obtained by a chi^2 analysis of lepton deep inelastic experimental data. It is possible to determine valence-quark distributions at medium x and antiquark distributions at small x; however, the distributions in other x regions and gluon distributions cannot be fixed.
openaire   +2 more sources

Supervision as a Dispersed Practice: Exploring the Creation of Supervisory Spaces in Day‐to‐Day Social Work Practice

Child &Family Social Work, EarlyView.
ABSTRACT Supervision is integral to social work practice; however, how it operates in day‐to‐day practice remains poorly understood. Existing research mainly comprises quantitative and qualitative accounts of social workers' and supervisors' experiences of supervision.
Mark Gregory
wiley   +1 more source

Unravelling the skin of the nurse shark: A morphological description of the placoid scales of Ginglymostoma cirratum

Journal of Fish Biology, EarlyView.
Abstract Ginglymostoma cirratum, commonly known as the nurse shark, is a nocturnally active benthic shark, often found in western and eastern Atlantic waters. Although this shark has been well explored in many biological aspects, few studies have thoroughly examined the morphology of its dermal denticles (or placoid scales).
Danilo P. Lima, Aline. N. Poscai, Laura F. Mianutti, Nathalie. M. R. de Abreu, Jade Medeiros, Marcus V. G. Araújo, Frederico. B. de Sousa, João Paulo C. B. da Silva   +7 more
wiley   +1 more source

Parton Distribution Functions

, 2017
Abstract Parton Distribution Functions (PDFs) are a necessary ingredient in the calculation of cross sections at collider experiments with hadron beams. This chapter explores the techniques of determining the PDFs and their uncertainties, based on global analyses of data sets arising from a variety of hard-scattering processes.
S. Forte, J. Huston, R. S. Thorne, S. Carrazza, J. Gao, Z. Kassabov, P. Nadolsky, J. Rojo   +7 more
openaire   +3 more sources

NNLO interpolation grids for jet production at the LHC

European Physical Journal C: Particles and Fields, 2022
Fast interpolation-grid frameworks facilitate an efficient and flexible evaluation of higher-order predictions for any choice of parton distribution functions or value of the strong coupling $$\alpha _{\mathrm {s}}$$ α s .
D. Britzger, A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover, C. Gwenlan, A. Huss, J. Pires, K. Rabbertz, D. Savoiu, M. R. Sutton, J. Stark   +10 more
doaj   +1 more source

Performance, cardioventilatory and perceptual responses to perceived opponent ability during head‐to‐head cycling competition

Experimental Physiology, EarlyView.
Abstract We aimed to investigate whether cycling competition influences performance and pacing compared to an individual time trial. The second aim was to determine whether performance is further influenced by deceptive or accurate augmented feedback, delivered as an opponent riding at 2% higher power outputs than a previous competitive time trial ...
Guilherme Matta, Andrew Edwards, Bart Roelands, Florentina Hettinga, Philip Hurst   +4 more
wiley   +1 more source

Covariant extension of the GPD overlap representation at low Fock states

European Physical Journal C: Particles and Fields, 2017
We present a novel approach to compute generalized parton distributions within the lightfront wave function overlap framework. We show how to systematically extend generalized parton distributions computed within the DGLAP region to the ERBL one ...
N. Chouika, C. Mezrag, H. Moutarde, J. Rodríguez-Quintero   +3 more
doaj   +1 more source

Parton distribution functions and beyond

, 2020
Presentation from 2020 AMBER@CERN ...
openaire   +3 more sources

A Novel Sequential Monte Carlo Algorithm for Parameter Estimation in Eco‐Hydrological Models

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract Bayesian inference offers a flexible framework for parameter estimation and uncertainty quantification in eco‐hydrological models. However, simultaneously achieving robust posterior exploration and high computational efficiency for multimodal, high‐dimensional, and computationally intensive targets remains challenging for the widely used ...
Cong Xu, Kun Zhang, Gaofeng Zhu, Xin Li, Chuang Wei   +4 more
wiley   +1 more source

Perspective on polarised parton distribution functions and proton spin

Physics Letters B, 2023
Supposing there exists an effective charge which defines an evolution scheme for both unpolarised and polarised parton distribution functions (DFs) that is all-orders exact and using Ansätze for hadron-scale proton polarised valence quark DFs ...
P. Cheng, Y. Yu, H.-Y. Xing, C. Chen, Z.-F. Cui, C.D. Roberts   +5 more
doaj   +1 more source