Abt, I;
Cooper-Sarkar, AM;
Foster, B;
Myronenko, V;
Wichmann, K;
Wing, M;
(2016)
Study of HERA ep data at low Q(2) and low x(Bj) and the need for higher-twist corrections to standard perturbative QCD fits.
Physical Review D
, 94
(3)
, Article 034032. 10.1103/PhysRevD.94.034032.
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Abstract
A detailed comparison of HERA data at low Bjorken-x and low four-momentum-transfer squared, Q2, with predictions based on ln Q2 evolution (DGLAP) in perturbative quantum chromodynamics suggests inadequacies of this framework. The standard DGLAP evolution was augmented by including an additional higher-twist term in the description of the longitudinal structure function, FL. This additional term, FLAHTL =Q2, improves the description of the reduced cross sections significantly. The resulting predictions for FL suggest that further corrections are required for Q2 less than about 2 GeV2.
| Type: | Article |
|---|---|
| Title: | Study of HERA ep data at low Q(2) and low x(Bj) and the need for higher-twist corrections to standard perturbative QCD fits |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevD.94.034032 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevD.94.034032 |
| Language: | English |
| Additional information: | © 2016 American Physical Society |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Particles & Fields, Physics, Deep-inelastic Scattering, Parton Distributions, Heavy Quarks, Model, Lhc |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1514928 |
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