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Related papers: Parton distributions for the LHC Run II

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We present LO, NLO and NNLO sets of parton distribution functions (PDFs) of the proton determined from global analyses of the available hard scattering data. These MMHT2014 PDFs supersede the `MSTW2008' parton sets, but are obtained within…

High Energy Physics - Phenomenology · Physics 2015-06-11 L. A. Harland-Lang , A. D. Martin , P. Motylinski , R. S. Thorne

We present a first determination of the nuclear parton distribution functions (nPDF) based on the NNPDF methodology: nNNPDF1.0. This analysis is based on neutral-current deep-inelastic structure function data and is performed up to NNLO in…

High Energy Physics - Phenomenology · Physics 2019-07-23 Rabah Abdul Khalek , Jacob J. Ethier , Juan Rojo

We present a new set of parton distribution functions (PDFs) based on a fully global dataset and machine learning techniques: NNPDF4.0. We expand the NNPDF3.1 determination with 44 new datasets, mostly from the LHC. We derive a novel…

We present new sets of nuclear parton distribution functions (nPDFs) at next-to-leading order and next-to-next-to-leading order in perturbative QCD. Our analyses are based on deeply inelastic scattering data with charged-lepton and neutrino…

High Energy Physics - Phenomenology · Physics 2022-06-09 Ilkka Helenius , Marina Walt , Werner Vogelsang

Recently a new set of Parton Distribution Functions (NNPDF1.2) has been produced and released by the NNPDF Collaboration. The inclusion of dimuon data in the analysis allows a determination of the strange content of the proton with faithful…

High Energy Physics - Phenomenology · Physics 2009-07-28 Alberto Guffanti , Juan Rojo , Maria Ubiali

I review recent progress in the NNPDF global analyses of parton distributions (PDFs) focusing on developments contributing to its new upcoming release: NNPDF4.0. The NNPDF4.0 determination represents unprecedented progress in three main…

High Energy Physics - Phenomenology · Physics 2021-04-20 Juan Rojo

We have presented the results of our next-to-next-to-leading order (NNLO) QCD analysis of nuclear parton distribution functions (nuclear PDFs) [Phys. Rev. D 93 (2016) 014026, arXiv:1601.00939 [hep-ph]] using all available neutral current…

High Energy Physics - Phenomenology · Physics 2020-12-17 S. Atashbar Tehrani

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…

High Energy Physics - Experiment · Physics 2021-12-03 H1 , ZEUS Collaborations , : , I. Abt , R. Aggarwal , V. Andreev , M. Arratia , V. Aushev , A. Baghdasaryan , A. Baty , K. Begzsuren , O. Behnke , A. Belousov , A. Bertolin , I. Bloch , V. Boudry , G. Brandt , I. Brock , N. H. Brook , R. Brugnera , A. Bruni , A. Buniatyan , P. J. Bussey , L. Bystritskaya , A. Caldwell , A. J. Campbell , K. B. Cantun Avila , C. D. Catterall , K. Cerny , V. Chekelian , Z. Chen , J. Chwastowski , J. Ciborowski , R. Ciesielski , J. G. Contreras , A. M. Cooper-Sarkar , M. Corradi , L. Cunqueiro Mendez , J. Currie , J. Cvach , J. B. Dainton , K. Daum , R. K. Dementiev , A. Deshpande , C. Diaconu , S. Dusini , G. Eckerlin , S. Egli , E. Elsen , L. Favart , A. Fedotov , J. Feltesse , J. Ferrando , M. Fleischer , A. Fomenko , B. Foster , C. Gal , E. Gallo , D. Gangadharan , A. Garfagnini , J. Gayler , A. Gehrmann-De Ridder , T. Gehrmann , A. Geiser , L. K. Gladilin , E. W. N. Glover , L. Goerlich , N. Gogitidze , Yu. A. Golubkov , M. Gouzevitch , C. Grab , T. Greenshaw , G. Grindhammer , G. Grzelak , C. Gwenlan , D. Haidt , R. C. W. Henderson , J. Hladký , D. Hochman , D. Hoffmann , R. Horisberger , T. Hreus , F. Huber , A. Huss , P. M. Jacobs , M. Jacquet , T. Janssen , N. Z. Jomhari , A. W. Jung , H. Jung , I. Kadenko , M. Kapichine , U. Karshon , J. Katzy , P. Kaur , C. Kiesling , R. Klanner , M. Klein , U. Klein , C. Kleinwort , H. T. Klest , R. Kogler , I. A. Korzhavina , P. Kostka , N. Kovalchuk , J. Kretzschmar , D. Krücker , K. Krüger , M. Kuze , M. P. J. Landon , W. Lange , P. Laycock , S. H. Lee , B. B. Levchenko , S. Levonian , A. Levy , W. Li , J. Lin , K. Lipka , B. List , J. List , B. Lobodzinski , B. Löhr , E. Lohrmann , O. R. Long , A. Longhin , F. Lorkowski , O. Yu. Lukina , I. Makarenko , E. Malinovski , J. Malka , H. -U. Martyn , S. Masciocchi , S. J. Maxfield , A. Mehta , A. B. Meyer , J. Meyer , S. Mikocki , V. M. Mikuni , M. M. Mondal , T. Morgan , A. Morozov , K. Mueller , B. Nachman , K. Nagano , J. D. Nam , Th. Naumann , P. R. Newman , C. Niebuhr , J. Niehues , G. Nowak , J. E. Olsson , Yu. Onishchuk , D. Ozerov , S. Park , C. Pascaud , G. D. Patel , E. Paul , E. Perez , A. Petrukhin , I. Picuric , I. Pidhurskyi , J. Pires , D. Pitzl , R. Polifka , A. Polini , S. Preins , M. Przybycień , A. Quintero , K. Rabbertz , V. Radescu , N. Raicevic , T. Ravdandorj , P. Reimer , E. Rizvi , P. Robmann , R. Roosen , A. Rostovtsev , M. Rotaru , M. Ruspa , D. P. C. Sankey , M. Sauter , E. Sauvan , S. Schmitt , B. A. Schmookler , U. Schneekloth , L. Schoeffel , A. Schöning , T. Schörner-Sadenius , F. Sefkow , I. Selyuzhenkov , M. Shchedrolosiev , L. M. Shcheglova , S. Shushkevich , I. O. Skillicorn , W. Słomiński , A. Solano , Y. Soloviev , P. Sopicki , D. South , V. Spaskov , A. Specka , L. Stanco , M. Steder , N. Stefaniuk , B. Stella , U. Straumann , C. Sun , B. Surrow , M. R. Sutton , T. Sykora , P. D. Thompson , K. Tokushuku , D. Traynor , B. Tseepeldorj , Z. Tu , O. Turkot , T. Tymieniecka , A. Valkárová , C. Vallée , P. Van Mechelen , A. Verbytskyi , W. A. T. Wan Abdullah , D. Wegener , K. Wichmann , M. Wing , E. Wünsch , S. Yamada , Y. Yamazaki , J. Žáček , A. F. Żarnecki , O. Zenaiev , J. Zhang , Z. Zhang , R. Žlebčík , H. Zohrabyan , F. Zomer

We provide an assessment of the impact of parton distributions on the determination of LHC processes, and of the accuracy with which parton distributions (PDFs) can be extracted from data, in particular from current and forthcoming HERA…

We review the present status of the determination of parton distribution functions (PDFs) in the light of the precision requirements for the LHC in Run 2 and other future hadron colliders. We provide brief reviews of all currently available…

High Energy Physics - Phenomenology · Physics 2016-09-21 A. Accardi , S. Alekhin , J. Blümlein , M. V. Garzelli , K. Lipka , W. Melnitchouk , S. Moch , R. Placakyte , J. F. Owens , E. Reya , N. Sato , A. Vogt , O. Zenaiev

A thorough understanding of PDFs and their uncertainties is important for the LHC and for future collider experiments. The recently released NNPDF3.0 set was presented alongside results from closure tests, where PDF fits were performed on…

High Energy Physics - Phenomenology · Physics 2015-06-25 Christopher S. Deans

We present the first global analysis of parton distribution functions (PDFs) at approximate N$^{3}$LO in the strong coupling constant $\alpha_{s}$, extending beyond the current highest NNLO achieved in PDF fits. To achieve this, we present…

High Energy Physics - Phenomenology · Physics 2023-03-14 J. McGowan , T. Cridge , L. A. Harland-Lang , R. S. Thorne

We provide an assessment of the state of the art in various issues related to experimental measurements, phenomenological methods and theoretical results relevant for the determination of parton distribution functions (PDFs) and their…

We present new parton distribution functions (PDFs) at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) in perturbative QCD, derived from a comprehensive global QCD analysis of high-precision data sets from combined HERA…

High Energy Physics - Phenomenology · Physics 2024-12-17 Majid Azizi , Maryam Soleymaninia , Hadi Hashamipour , Maral Salajegheh , Hamzeh Khanpour , Ulf-G. Meißner

Nuclear parton distribution functions (nPDFs) can be determined in a global QCD analysis using a wide range of experimental data. In addition to older fixed-target deep inelastic scattering and Drell-Yan (DY) dilepton production data,…

High Energy Physics - Phenomenology · Physics 2022-07-12 Ilkka Helenius , Marina Walt , Werner Vogelsang

We discuss the main features of the recent NNPDF2.1 NLO set, a determination of parton distributions from a global set of hard scattering data using the NNPDF methodology including heavy quark mass effects. We present the implications for…

High Energy Physics - Phenomenology · Physics 2011-07-07 Francesco Cerutti

Study of parton distribution functions (PDFs) has led to a finer cognisance of the structure of partons in hadrons and the proton structure functions in deep inelastic scattering (DIS). PDFs are instrumental in predicting results for most…

High Energy Physics - Phenomenology · Physics 2025-10-02 Akbari Jahan , Diptimonta Neog

The accurate determination of the Parton Distribution Functions (PDFs) of the proton is an essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact a wide range of processes, from Higgs boson…

We present a determination of the parton distributions of the nucleon from a global set of hard scattering data using the NNPDF methodology at LO and NNLO in perturbative QCD, thereby generalizing to these orders the NNPDF2.1 NLO parton…

We present recent results of the NNPDF collaboration on a full DIS analysis of Parton Distribution Functions (PDFs). Our method is based on the idea of combining a Monte Carlo sampling of the probability measure in the space of PDFs with…

High Energy Physics - Phenomenology · Physics 2008-05-21 NNPDF Collaboration , M. Ubiali , R. D. Ball , L. Del Debbio , S. Forte , A. Guffanti , J. I. Latorre , A. Piccione , J. Rojo