000593930 001__ 593930 000593930 005__ 20231023210434.0 000593930 0247_ $$2INSPIRETeX$$aFieg:2023kld 000593930 0247_ $$2inspire$$ainspire:2698221 000593930 0247_ $$2arXiv$$aarXiv:2309.08604 000593930 0247_ $$2datacite_doi$$a10.3204/PUBDB-2023-05595 000593930 037__ $$aPUBDB-2023-05595 000593930 041__ $$aEnglish 000593930 088__ $$2DESY$$aDESY-23-133 000593930 088__ $$2arXiv$$aarXiv:2309.08604 000593930 1001_ $$0P:(DE-HGF)0$$aFieg, Max$$b0$$eCorresponding author 000593930 245__ $$aTuning Pythia for Forward Physics Experiments 000593930 260__ $$c2023 000593930 3367_ $$0PUB:(DE-HGF)25$$2PUB:(DE-HGF)$$aPreprint$$bpreprint$$mpreprint$$s1698050691_232146 000593930 3367_ $$2ORCID$$aWORKING_PAPER 000593930 3367_ $$028$$2EndNote$$aElectronic Article 000593930 3367_ $$2DRIVER$$apreprint 000593930 3367_ $$2BibTeX$$aARTICLE 000593930 3367_ $$2DataCite$$aOutput Types/Working Paper 000593930 500__ $$aWe will first submit to arXiv, and later also to a journal. 000593930 520__ $$aEvent generators like Pythia play an important role in physics studies at the Large Hadron Collider (LHC). While they make accurate predictions in the central region, i.e. at pseudorapidities $\eta<5$, a disagreement between Pythia and measurements in the forward region, $\eta>7$, has been observed. We introduce a dedicated forward physics tune for the Pythia event generator to be used for forward physics studies at the LHC, which uses a more flexible modelling of beam remnant hadronization and is tuned to available particle spectra measured by LHCf. Furthermore, we provide an uncertainty estimate on the new tune in a data-driven way which can be used as a means of flux uncertainty for future forward physics studies. We demonstrate an application of our tune by showing the updated neutrino and dark photon spectra at the FASER experiment. 000593930 536__ $$0G:(DE-HGF)POF4-611$$a611 - Fundamental Particles and Forces (POF4-611)$$cPOF4-611$$fPOF IV$$x0 000593930 536__ $$0G:(GEPRIS)390833306$$aDFG project 390833306 - EXC 2121: Quantum Universe (390833306)$$c390833306$$x1 000593930 588__ $$aDataset connected to INSPIRE 000593930 650_7 $$2INSPIRE$$aparticle, spectrum 000593930 650_7 $$2INSPIRE$$aphoton, spectrum 000593930 650_7 $$2INSPIRE$$aCERN LHC Coll 000593930 650_7 $$2INSPIRE$$aMonte Carlo 000593930 650_7 $$2INSPIRE$$aLHC-F 000593930 650_7 $$2INSPIRE$$aflux 000593930 650_7 $$2INSPIRE$$ahadronization 000593930 650_7 $$2INSPIRE$$arapidity 000593930 650_7 $$2INSPIRE$$acentral region 000593930 693__ $$0EXP:(DE-MLZ)NOSPEC-20140101$$5EXP:(DE-MLZ)NOSPEC-20140101$$eNo specific instrument$$x0 000593930 7001_ $$0P:(DE-H253)PIP1097110$$aKling, Felix$$b1$$udesy 000593930 7001_ $$aSchulz, Holger$$b2 000593930 7001_ $$aSjöstrand, Torbjörn$$b3 000593930 8564_ $$uhttps://bib-pubdb1.desy.de/record/593930/files/HTML-Approval_of_scientific_publication.html 000593930 8564_ $$uhttps://bib-pubdb1.desy.de/record/593930/files/PDF-Approval_of_scientific_publication.pdf 000593930 8564_ $$uhttps://bib-pubdb1.desy.de/record/593930/files/2309.08604v1.pdf$$yOpenAccess 000593930 8564_ $$uhttps://bib-pubdb1.desy.de/record/593930/files/2309.08604v1.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000593930 909CO $$ooai:bib-pubdb1.desy.de:593930$$popenaire$$popen_access$$pVDB$$pdriver$$pdnbdelivery 000593930 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1097110$$aDeutsches Elektronen-Synchrotron$$b1$$kDESY 000593930 9131_ $$0G:(DE-HGF)POF4-611$$1G:(DE-HGF)POF4-610$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMatter and the Universe$$vFundamental Particles and Forces$$x0 000593930 9141_ $$y2023 000593930 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000593930 915__ $$0StatID:(DE-HGF)0580$$2StatID$$aPublished 000593930 915__ $$0LIC:(DE-HGF)CCBY4$$2HGFVOC$$aCreative Commons Attribution CC BY 4.0 000593930 9201_ $$0I:(DE-H253)T-20120731$$kT$$lTheorie-Gruppe$$x0 000593930 980__ $$apreprint 000593930 980__ $$aVDB 000593930 980__ $$aUNRESTRICTED 000593930 980__ $$aI:(DE-H253)T-20120731 000593930 9801_ $$aFullTexts