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001     642926
005     20251221050245.0
024 7 _ |a John:2025qlm
|2 INSPIRETeX
024 7 _ |a inspire:2943419
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024 7 _ |a arXiv:2507.06022
|2 arXiv
024 7 _ |a 10.3204/PUBDB-2025-05722
|2 datacite_doi
037 _ _ |a PUBDB-2025-05722
041 _ _ |a English
082 _ _ |a 530
088 _ _ |a arXiv:2507.06022
|2 arXiv
088 _ _ |a UCI-TR-2025-14
|2 Other
100 1 _ |a John, Jukka
|0 0009-0000-1343-3460
|b 0
245 _ _ |a A first determination of the LHC neutrino fluxes from FASER data
260 _ _ |c 2025
336 7 _ |a Preprint
|b preprint
|m preprint
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|s 1766069401_1297604
|2 PUB:(DE-HGF)
336 7 _ |a WORKING_PAPER
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336 7 _ |a Electronic Article
|0 28
|2 EndNote
336 7 _ |a preprint
|2 DRIVER
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a Output Types/Working Paper
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500 _ _ |a 32 pages, 12 figures, code available from https://github.com/LHCfitNikhef/nnfluxnu and https://github.com/LHCfitNikhef/powheg-dis/tree/fktable
520 _ _ |a The detection of TeV neutrinos from the LHC by the far-forward detectors FASER and SND@LHC enables a plethora of novel physics opportunities. Among these, the measurement of the flavour, energy, and rapidity dependence of the LHC forward neutrino fluxes provides unique constraints on theoretical predictions of forward particle production in hadronic collisions. We demonstrate that neutrino event yield measurements at FASER from Run 3 and at its HL-LHC upgrades enable a theory-agnostic extraction of the LHC forward neutrino fluxes. We exploit the equivalence of the problem with the determination of parton distributions from deep-inelastic structure functions to apply the NNPDF approach, based on machine learning regression and the Monte Carlo replica method, to LHC neutrino fluxes. The resulting NNνflux methodology is validated through closure tests and applied to a first extraction of the LHC muon neutrino flux from the FASER 2024 data. We show how NNνflux can discriminate between event generators of forward hadron production; scrutinize a possible intrinsic charm component in the proton; and constrain BSM scenarios with enhanced decays of neutral hadrons into neutrinos.
536 _ _ |a 611 - Fundamental Particles and Forces (POF4-611)
|0 G:(DE-HGF)POF4-611
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588 _ _ |a Dataset connected to CrossRef, INSPIRE, Journals: bib-pubdb1.desy.de
650 _ 7 |a Deep Inelastic Scattering or Small-x Physics
|2 autogen
650 _ 7 |a Neutrino Interactions
|2 autogen
650 _ 7 |a Parton Distributions
|2 autogen
693 _ _ |0 EXP:(DE-MLZ)NOSPEC-20140101
|5 EXP:(DE-MLZ)NOSPEC-20140101
|e No specific instrument
|x 0
700 1 _ |a Kling, Felix
|0 P:(DE-H253)PIP1097110
|b 1
700 1 _ |a Koorn, Jelle
|0 0009-0003-5572-6618
|b 2
700 1 _ |a Krack, Peter
|0 P:(DE-HGF)0
|b 3
|e Corresponding author
700 1 _ |a Rojo, Juan
|0 0000-0003-4279-2192
|b 4
856 4 _ |y OpenAccess
|u https://bib-pubdb1.desy.de/record/642926/files/2507.06022v1.pdf
856 4 _ |y OpenAccess
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909 C O |o oai:bib-pubdb1.desy.de:642926
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910 1 _ |a Deutsches Elektronen-Synchrotron
|0 I:(DE-588b)2008985-5
|k DESY
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|6 P:(DE-H253)PIP1097110
913 1 _ |a DE-HGF
|b Forschungsbereich Materie
|l Matter and the Universe
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|v Fundamental Particles and Forces
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915 _ _ |a OpenAccess
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915 _ _ |a Creative Commons Attribution CC BY 4.0
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915 _ _ |a Published
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920 1 _ |0 I:(DE-H253)T-20120731
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980 _ _ |a preprint
980 _ _ |a VDB
980 _ _ |a UNRESTRICTED
980 _ _ |a I:(DE-H253)T-20120731
980 1 _ |a FullTexts

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