Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

(H1 and ZEUS collaborations)

doi:10.1140/epjc/s10052-022-10083-9

Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

(H1 and ZEUS collaborations)

Physics and Astronomy

Max Planck Institute for Physics (Werner Heisenberg Institute)
Savitribai Phule Pune University
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
University of California at Riverside
Kyiv National Taras Shevchenko University
A. Alikhanian Yerevan Institute of Physics
Rice University
Mongolian Academy of Sciences
German Electron Synchrotron
National Institute for Nuclear Physics
CNRS-IN2P3
University of Göttingen
University of Bonn
University of Bath
University College London
University of Padua
University of Birmingham
University of Glasgow
Alikhanov Institute for Theoretical and Experimental Physics
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
York University Toronto
Palacký University Olomouc
Shandong University
Institute of Nuclear Physics
University of Lodz
University of Warsaw
Rockefeller University
University of Oxford
Oak Ridge National Laboratory
Durham University
Czech Academy of Sciences
University of Liverpool
University of Wuppertal
Lomonosov Moscow State University
Aix-Marseille Université
Paul Scherrer Institute
Inter-University Institute for High Energies ULB-VUB
Centre d'Etudes de Saclay

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of αs(MZ2) and the PDFs, was performed with the result αs(MZ2)=0.1156±0.0011(exp)-0.0002+0.0001(model+parameterisation)±0.0029(scale). The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of αs(MZ2), αs(MZ2)=0.1155 and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input.

Original language	English
Article number	243
Journal	European Physical Journal C
Volume	82
Issue number	3
DOIs	https://doi.org/10.1140/epjc/s10052-022-10083-9
State	Published - Mar 2022

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@article{8f6f427854f84b7093d9a714a81e2540,

title = "Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions",

abstract = "The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of αs(MZ2) and the PDFs, was performed with the result αs(MZ2)=0.1156±0.0011(exp)-0.0002+0.0001(model+parameterisation)±0.0029(scale). The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of αs(MZ2), αs(MZ2)=0.1155 and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input.",

author = "(H1 and ZEUS collaborations) and I. Abt and R. Aggarwal and V. Andreev and M. Arratia and V. Aushev and A. Baghdasaryan and A. Baty and K. Begzsuren and O. Behnke and A. Belousov and A. Bertolin and I. Bloch and V. Boudry and G. Brandt and I. Brock and Brook, \{N. H.\} and R. Brugnera and A. Bruni and A. Buniatyan and Bussey, \{P. J.\} and L. Bystritskaya and A. Caldwell and Campbell, \{A. J.\} and \{Cantun Avila\}, \{K. B.\} and Catterall, \{C. D.\} and K. Cerny and V. Chekelian and Z. Chen and J. Chwastowski and J. Ciborowski and R. Ciesielski and Contreras, \{J. G.\} and Cooper-Sarkar, \{A. M.\} and M. Corradi and \{Cunqueiro Mendez\}, L. and J. Currie and J. Cvach and Dainton, \{J. B.\} and K. Daum and Dementiev, \{R. K.\} and A. Deshpande and C. Diaconu and S. Dusini and G. Eckerlin and S. Egli and E. Elsen and L. Favart and A. Fedotov and J. Feltesse and J. Ferrando",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = mar,

doi = "10.1140/epjc/s10052-022-10083-9",

language = "English",

volume = "82",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "3",

}

TY - JOUR

T1 - Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

AU - (H1 and ZEUS collaborations)

AU - Abt, I.

AU - Aggarwal, R.

AU - Andreev, V.

AU - Arratia, M.

AU - Aushev, V.

AU - Baghdasaryan, A.

AU - Baty, A.

AU - Begzsuren, K.

AU - Behnke, O.

AU - Belousov, A.

AU - Bertolin, A.

AU - Bloch, I.

AU - Boudry, V.

AU - Brandt, G.

AU - Brock, I.

AU - Brook, N. H.

AU - Brugnera, R.

AU - Bruni, A.

AU - Buniatyan, A.

AU - Bussey, P. J.

AU - Bystritskaya, L.

AU - Caldwell, A.

AU - Campbell, A. J.

AU - Cantun Avila, K. B.

AU - Catterall, C. D.

AU - Cerny, K.

AU - Chekelian, V.

AU - Chen, Z.

AU - Chwastowski, J.

AU - Ciborowski, J.

AU - Ciesielski, R.

AU - Contreras, J. G.

AU - Cooper-Sarkar, A. M.

AU - Corradi, M.

AU - Cunqueiro Mendez, L.

AU - Currie, J.

AU - Cvach, J.

AU - Dainton, J. B.

AU - Daum, K.

AU - Dementiev, R. K.

AU - Deshpande, A.

AU - Diaconu, C.

AU - Dusini, S.

AU - Eckerlin, G.

AU - Egli, S.

AU - Elsen, E.

AU - Favart, L.

AU - Fedotov, A.

AU - Feltesse, J.

AU - Ferrando, J.

PY - 2022/3

Y1 - 2022/3

N2 - The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of αs(MZ2) and the PDFs, was performed with the result αs(MZ2)=0.1156±0.0011(exp)-0.0002+0.0001(model+parameterisation)±0.0029(scale). The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of αs(MZ2), αs(MZ2)=0.1155 and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input.

AB - The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of αs(MZ2) and the PDFs, was performed with the result αs(MZ2)=0.1156±0.0011(exp)-0.0002+0.0001(model+parameterisation)±0.0029(scale). The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of αs(MZ2), αs(MZ2)=0.1155 and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input.

UR - https://www.scopus.com/pages/publications/85131587859

U2 - 10.1140/epjc/s10052-022-10083-9

DO - 10.1140/epjc/s10052-022-10083-9

M3 - Article

AN - SCOPUS:85131587859

SN - 1434-6044

VL - 82

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

M1 - 243

ER -

Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

Abstract

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