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Impact of Inclusive Electron Ion Collider Data on Collinear Parton Distributions
/ Armesto, Néstor (Santiago de Compostela U., IGFAE) ; Cridge, Thomas (DESY) ; Giuli, Francesco (CERN) ; Harland-Lang, Lucian (University Coll. London) ; Newman, Paul (Birmingham U.) ; Schmookler, Barak (UC, Riverside) ; Thorne, Robert (University Coll. London) ; Wichmann, Katarzyna (DESY)
A study is presented of the impact of simulated inclusive Electron Ion Collider Deep Inelastic Scattering data on the determination of the proton and nuclear parton distribution functions (PDFs) at next-to-next-to-leading and next-to-leading order in QCD, respectively. The influence on the proton PDFs is evaluated relative to the HERAPDF2.0 set, which uses inclusive HERA data only, and also relative to the global fitting approach of the MSHT20 PDFs. [...]
arXiv:2309.11269; DESY-23-136.-
2024-03-01 - 12 p.
- Published in : Phys. Rev. D 109 (2024) 5
Fulltext: PDF;
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Quantifying the interplay of experimental constraints in analyses of parton distributions
/ Jing, Xiaoxian (Southern Methodist U.) ; Cooper-Sarkar, Amanda (Oxford U.) ; Courtoy, Aurore (Mexico U.) ; Cridge, Thomas (DESY) ; Giuli, Francesco (CERN) ; Harland-Lang, Lucian (University Coll. London) ; Hobbs, T.J. (Argonne) ; Huston, Joey (Michigan State U.) ; Nadolsky, Pavel (Southern Methodist U.) ; Thorne, Robert S. (University Coll. London) et al.
Parton distribution functions (PDFs) play a central role in calculations for the Large Hadron Collider (LHC). To gain a deeper understanding of the emergence and interplay of constraints on the PDFs in the global QCD analyses, it is important to examine the relative significance and mutual compatibility of the experimental data sets included in the PDF fits. [...]
arXiv:2306.03918; ANL-182798; DESY-23-068; FERMILAB-PUB-23-276-T; MSUHEP-23-016; PITT-PACC-2315; SMU-HEP-23-02.-
2023-08-01 - 57 p.
- Published in : Phys. Rev. D 108 (2023) 034029
Fulltext: 2306.03918 - PDF; FERMILAB-PUB-23-276-T - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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The PDF4LHC21 combination of global PDF fits for the LHC Run III
/ PDF4LHC Working Group Collaboration
A precise knowledge of the quark and gluon structure of the proton, encoded by the parton distribution functions (PDFs), is of paramount importance for the interpretation of high-energy processes at present and future lepton-hadron and hadron-hadron colliders. Motivated by recent progress in the PDF determinations carried out by the CT, MSHT, and NNPDF groups, we present an updated combination of global PDF fits: PDF4LHC21. [...]
arXiv:2203.05506; Edinburgh 2021/31; FERMILAB-PUB-22-121-QIS-SCD-T; MSUHEP-22-010,
Nikhef 2021-033; SMU-HEP-22-01.-
2022-07-05 - 94 p.
- Published in : J. Phys. G 49 (2022) 080501
Fulltext: jt - PDF; 2203.05506 - PDF; Publication - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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The Forward Physics Facility at the High-Luminosity LHC
/ Feng, Jonathan L. (UC, Irvine) ; Kling, Felix (DESY) ; Reno, Mary Hall (Iowa U.) ; Rojo, Juan (NIKHEF, Amsterdam ; Vrije U., Amsterdam) ; Soldin, Dennis (Delaware U.) ; Anchordoqui, Luis A. (Lehman Coll.) ; Boyd, Jamie (CERN) ; Ismail, Ahmed (Oklahoma State U.) ; Harland-Lang, Lucian (Oxford U. ; Oxford U., Theor. Phys.) ; Kelly, Kevin J. (CERN) et al.
High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles along the beam collision axis, outside of the acceptance of existing LHC experiments. The proposed Forward Physics Facility (FPF), to be located several hundred meters from the ATLAS interaction point and shielded by concrete and rock, will host a suite of experiments to probe Standard Model (SM) processes and search for physics beyond the Standard Model (BSM) [...]
arXiv:2203.05090; UCI-TR-2022-01; CERN-PBC-Notes-2022-001; INT-PUB-22-006; BONN-TH-2022-04; FERMILAB-PUB-22-094-ND-SCD-T.-
Geneva : CERN, 2023-01-20 - 413 p.
- Published in : J. Phys. G 50 (2023) 030501
Fulltext: FERMILAB-PUB-22-094-ND-SCD-T - PDF; 2203.05090 - PDF; blank - PDF; Fulltext from Publisher: PDF; External links: Fermilab Library Server; eConf
In : 2021 Snowmass Summer Study, Seattle, WA, United States, 11 - 20 July 2021, pp.030501
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New opportunities at the photon energy frontier
/ Klein, Spencer (LBNL, NSD) ; Tapia Takaki, Daniel (Kansas U.) ; Adam, Jaroslav (Brookhaven) ; Aidala, Christine (Michigan U.) ; Angerami, Aaron (LLNL, Livermore) ; Audurier, Benjamin (Ecole Polytechnique) ; Bertulani, Carlos (Texas A-M, Commerce) ; Bierlich, Christian (Lund U., Dept. Theor. Phys.) ; Blok, Boris (Technion) ; Brandenburg, James Daniel (Brookhaven) et al.
Ultra-peripheral collisions (UPCs) involving heavy ions and protons are the energy frontier for photon-mediated interactions. [...]
arXiv:2009.03838.
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10 p.
eConf - Fulltext
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Photon-Photon Collisions with SuperChic
/ Harland-Lang, Lucian A. (University Coll. London) ; Khoze, V.A. (Durham U., IPPP ; St. Petersburg, INP) ; Ryskin, M.G. (St. Petersburg, INP)
The SuperChic Monte Carlo generator provides a common platform for QCD-mediated, photoproduction and photon-induced Central Exclusive Production (CEP), with a fully differential treatment of soft survival effects. In these proceedings we summarise the processes generated, before discussing in more detail those due to photon-photon collisions, paying special attention to the correct treatment of the survival factor. [...]
arXiv:1709.00176; IPPP-17-63.-
2018-12-20 - 6 p.
- Published in : CERN Conf. Proc. 1 (2018) 59
Fulltext: fulltext1621274 - PDF; 564-3759-1-PB - PDF; arXiv:1709.00176 - PDF;
In : Proceedings of the PHOTON-2017 Conference, pp.59
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New physics searches with heavy-ion collisions at the LHC
/ Bruce, Roderik (CERN) ; d'Enterria, David (CERN) ; de Roeck, Albert (CERN) ; Drewes, Marco (Louvain U., CP3) ; Farrar, Glennys R. (New York U., CCPP) ; Giammanco, Andrea (Louvain U., CP3) ; Gould, Oliver (Helsinki U.) ; Hajer, Jan (Louvain U., CP3) ; Harland-Lang, Lucian (Oxford U.) ; Heisig, Jan (Louvain U., CP3) et al.
This document summarises proposed searches for new physics accessible in the heavy-ion mode at the CERN Large Hadron Collider (LHC), both through hadronic and ultraperipheral $\gamma\gamma$ interactions, and that have a competitive or, even, unique discovery potential compared to standard proton-proton collision studies. Illustrative examples include searches for new particles -- such as axion-like pseudoscalars, radions, magnetic monopoles, new long-lived particles, dark photons, and sexaquarks as dark matter candidates -- as well as new interactions, such as non-linear or non-commutative QED extensions. [...]
arXiv:1812.07688.-
2020-05-19 - 20 p.
- Published in : J. Phys. G 47 (2020) 060501
Fulltext: fulltext1709994 - PDF; 1812.07688 - PDF; Fulltext from publisher: PDF;
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