Dipole model at Next-to-Leading Order meets HERA data
Beuf, G., Hänninen, H., Lappi, T., & Mäntysaari, H. (2021). Dipole model at Next-to-Leading Order meets HERA data. In HardProbes2020 : 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Article 101). Sissa Medialab. POS Proceedings of Science, 387. https://doi.org/10.22323/1.387.0101
Published inPOS Proceedings of Science
© Copyright owned by the author(s)
Deep inelastic scattering (DIS) total cross section data at small-x as measured by the HERA experiments is well described by Balitsky-Kovchegov (BK) evolution in the leading order dipole picture. Recently the full Next-to-Leading Order (NLO) dipole picture total cross sections have become available for DIS, and a working factorization scheme has been devised which subtracts the soft gluon divergence present at NLO. We report our recently published work in which we make the first comparisons of the NLO DIS total cross sections to HERA data. The non-perturbative initial condition to BK evolution is fixed by fitting the HERA reduced cross section data. As the NLO results for the DIS total cross section are currently available only in the massless quark limit, we also fit a light-quark-only cross section constructed with a parametrization of published total and heavy quark data. We find an excellent description of the HERA data. Since the full NLO BK equation is computationally expensive, we use a number of beyond LO prescriptions for the evolution that include most important higher order corrections enhanced by large transverse logarithms, including the recent version of the equation formulated in terms of the target momentum fraction. ...
ConferenceInternational Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions
Is part of publicationHardProbes2020 : 10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland; European Commission
Funding program(s)Postdoctoral Researcher, AoF; Academy Project, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis work was supported by the Academy of Finland, projects 314764 (H.M) and 321840 (T.L). G.B, H.H and T.L are supported by the European Research Council grant ERC-2015-CoG-681707. Computing resources from CSC – IT Center for Science in Espoo, Finland and from the FGCI (persistent identifier urn:nbn:fi:research-infras-2016072533) were used.
Showing items with similar title or keywords.
Factorization of the soft gluon divergence from the dipole picture deep inelastic scattering cross sections at next-to-leading order Ducloue, B.; Hänninen, H.; Lappi, T.; Zhu, Y. (Sissa, 2019)We use a factorization scheme, analogous to the one proposed for single inclusive forward hadron production in hadronic collisions, to regularize the soft gluon divergence present in the deep inelastic scattering (DIS) ...
Next-to-leading order corrections to deep inelastic scattering structure functions at small Bjorken-x Hänninen, Henri (2017)Syvän epäelastisen sironnan kokeellisia tuloksia on kuvattu onnistuneesti pie- nillä Bjorkenin x:n arvoilla käyttämällä sironnan dipolimallia ja johtavan kerta- luvun valokartiohäiriöteoriaa. On tärkeää selvittää, paraneeko ...
First global next-to-leading order determination of diffractive parton distribution functions and their uncertainties within the xFitter framework Goharipour, Muhammad; Khanpour, Hamzeh; Guzey, Vadim (Springer, 2018)We present GKG18-DPDFs, a next-to-leading order (NLO) QCD analysis of diffractive parton distribution functions (diffractive PDFs) and their uncertainties. This is the first global set of diffractive PDFs determined ...
Inclusive dijet photoproduction in ultraperipheral heavy ion collisions at the CERN Large Hadron Collider in next-to-leading order QCD Guzey, V.; Klasen, M. (American Physical Society, 2019)We compute the cross section of inclusive dijet photoproduction in ultraperipheral Pb-Pb collisions at the CERN Large Hadron Collider using next-to-leading order perturbative QCD. We demonstrate that our theoretical ...
On the use of a running coupling in the calculation of forward hadron production at next-to-leading order Ducloué, B.; Iancu, E.; Lappi, Tuomas; Mueller, A.H.; Soyez, G.; Triantafyllopoulos, D.N. (Elsevier BV, 2019)