Modelling and computational improvements to the simulation of single vector-boson plus jet processes for the ATLAS experiment
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This paper presents updated Monte Carlo configurations used to model the production of single electroweak vector bosons (W, Z/γ$$^{∗}$$) in association with jets in proton-proton collisions for the ATLAS experiment at the Large Hadron Collider. Improvements pertaining to the electroweak input scheme, parton-shower splitting kernels and scale-setting scheme are shown for multi-jet merged configurations accurate to next-to-leading order in the strong and electroweak couplings. The computational resources required for these set-ups are assessed, and approximations are introduced resulting in a factor three reduction of the per-event CPU time without affecting the physics modelling performance. Continuous statistical enhancement techniques are introduced by ATLAS in order to populate low cross-section regions of phase space and are shown to match or exceed the generated effective luminosity. This, together with the lower per-event CPU time, results in a 50% reduction in the required computing resources compared to a legacy set-up previously used by the ATLAS collaboration. The set-ups described in this paper will be used for future ATLAS analyses and lay the foundation for the next generation of Monte Carlo predictions for single vector-boson plus jets production.[graphic not available: see fulltext]
- Research Organization:
- AGH-UST, Cracow; Academia Sinica, Taiwan; Adelaide U., Sch. Chem. Phys.; Aegean U., Chios; Alberta U.; An Najah Natl. U.; Andres Bello Natl. U.; Ankara U.; Annecy, LAPP; Antonio Narino U.; Argonne National Laboratory (ANL), Argonne, IL (United States); Aristotle U., Thessaloniki; Arizona U.; Athens U.; BMCC, New York; Baku, Inst. Phys.; Barcelona, Autonoma U.; Barcelona, IFAE; Beijing, Inst. High Energy Phys.; Belgrade U.; Belgrade, Inst. Phys.; Ben Gurion U. of Negev; Bergen U.; Bern U., LHEP; Birmingham U.; Bogazici U.; Bohr Inst.; Bologna U.; Bonn U.; Boston U.; Brandeis U.; British Columbia U.; Brookhaven National Laboratory (BNL), Upton, NY (United States); Bucharest, IFIN-HH; Bucharest, Polytechnic Inst.; Buenos Aires U.; CERN; Cal State, East Bay; Cal State, Sacramento; Calabria U.; Cambridge U.; Cape Town U.; Carleton U.; Casablanca U.; Charles U.; Chicago U., EFI; Chile U., Catolica; City Coll., N.Y.; Clermont-Ferrand U.; Coimbra U.; Colombia, U. Natl.; Comenius U.; Cracow, INP; DESY; Democritos Nucl. Res. Ctr.; Dortmund U.; Dresden, Tech. U.; Dubna, JINR; Duke U.; Edinburgh U.; Enrico Fermi Ctr., Rome; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Fond. Bruno Kessler, Trento; Frascati; Freiburg U.; Fresno State; Fribourg U.; Gaziantep U.; Geneva U.; Genoa U.; Giessen U.; Glasgow U.; Gottingen U., II. Phys. Inst.; Granada U.; Hamburg U.; Harvard U., Phys. Dept.; Hefei, CUST; Heidelberg U.; Hellenic Open U., Patras; Hong Kong U.; Hong Kong U. Sci. Tech.; Hong Kong, Chinese U.; Humboldt U., Berlin; ICREA, Barcelona; ICTP, Trieste; IJCLab, Orsay; INCDTIM, Cluj Napoca; INFN, Bologna; INFN, Cosenza; INFN, Genoa; INFN, Lecce; INFN, Milan; INFN, Naples; INFN, Pavia; INFN, Pisa; INFN, Rome; INFN, Udine; IPP, Canada; IRFU, Saclay; Ibn Tofail U.; Illinois U., Urbana; Indiana U.; Innsbruck U.; Iowa State U.; Iowa U.; Istanbul U.; Jagiellonian U.; Johannesburg U.; Juiz de Fora U.; KEK, Tsukuba; King's Coll. London; Kirchhoff Inst. Phys.; Kobe U.; Kosice, IEF; Kyoto U.; Kyoto U. of Education; Kyushu U.; LIP, Lisbon; LPSC, Grenoble; La Plata U.; La Serena U.; Lancaster U.; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lebedev Inst.; Lisbon U., CFNUL; Liverpool U.; Lomonosov Moscow State U.; Louisiana Tech. U.; Louisville U.; Lund U.; Madrid, Autonoma U.; Mainz U.; Manchester U.; Marseille, CPPM; Massachusetts U., Amherst; McGill U.; Melbourne U.; Michigan State U.; Michigan U.; Milan U.; Minho U.; Minsk, High Energy Phys. Ctr.; Minsk, Inst. Phys.; Montreal U.; Moscow Phys. Eng. Inst.; Moscow State U.; Moscow, ITEP; Moscow, MIPT; Munich U.; Munich, Max Planck Inst.; Nagoya U.; Nanjing U.; Naples U.; Natl. Tech. U., Athens; Nevis Labs, Columbia U.; New Mexico U.; New York U.; Nijmegen U.; Nikhef, Amsterdam; Northern Illinois U.; Novosibirsk State U.; Novosibirsk, IYF; Ochanomizu U.; Ohio State U.; Oklahoma State U.; Oklahoma U.; Oregon U.; Osaka U.; Oslo U.; Oujda U.; Oxford U.; Palacky U.; Paris U., VI-VII; Pavia U.; Peking U., CHEP; Pennsylvania U.; Philippines U., Quezon City; Pisa U.; Pittsburgh U.; Prague, Inst. Phys.; Prague, Tech. U.; Queen Mary, U. of London; Rio de Janeiro Federal U.; Rome III U.; Rome U.; Rome U., Tor Vergata; Royal Holloway, U. of London; Royal Inst. Tech., Stockholm; Rutherford; SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); SUNY, Stony Brook; Salento U.; Santa Maria U., Valparaiso; Sao Joao del-Rei Fed. U.; Sao Paulo U.; Serpukhov, IHEP; Shandong U.; Shanghai Jiao Tong U.; Sheffield U.; Shinshu U.; Siegen U.; Simon Fraser U.; Southern Methodist U.; St. Petersburg, INP; Stefan Inst., Ljubljana; Stockholm U.; Stockholm U., OKC; Sussex U.; Sydney U.; TIFPA-INFN, Trento; TOBB ETU, Ankara; TRIUMF; Taiwan, Inst. Phys.; Taiwan, Natl. Tsing Hua U.; Tarapaca U.; Tbilisi State U.; Technion; Tel Aviv U.; Texas U.; Texas U., Arlington; Texas U., Dallas; Tokyo Inst. Tech.; Tokyo U., ICEPP; Tomsk State U.; Toronto U.; Transilvania U., Brasov; Trento U.; Tsinghua U., Beijing; Tsukuba U.; Tsung-Dao Lee Inst., Shanghai; Tufts U.; U. Witwatersrand, Johannesburg, Sch. Phys.; UC, Irvine; UC, Santa Cruz; Udine U.; University Coll. London; Uppsala U., Inst. Theor. Phys.; Valencia U., IFIC; Victoria U.; Warwick U.; Waseda U.; Washington U., Seattle; Weizmann Inst.; West Timisoara U.; Wisconsin U., Madison; Witwatersrand U.; Wuppertal U.; Wurzburg U.; Yale U.; Yeditepe U.
- Sponsoring Organization:
- US Department of Energy; USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- ATLAS Collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC02-07CH11359
- OSTI ID:
- 1836571
- Report Number(s):
- CERN-EP-2021-231; FERMILAB-PUB-21-740-T; oai:inspirehep.net:1992958; arXiv:2112.09588
- Journal Information:
- JHEP, Journal Name: JHEP Vol. 08
- Country of Publication:
- United States
- Language:
- English
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