Pileup mitigation at CMS in 13 TeV data
Albert M. SirunyanYerevan Physics Institute, Yerevan, ArmeniaA. TumasyanYerevan Physics Institute, Yerevan, ArmeniaW. AdamInstitut für Hochenergiephysik, Wien, AustriaF. AmbrogiInstitut für Hochenergiephysik, Wien, AustriaT. BergauerInstitut für Hochenergiephysik, Wien, AustriaM. DragicevicInstitut für Hochenergiephysik, Wien, AustriaJ. EröInstitut für Hochenergiephysik, Wien, AustriaA. Escalante Del ValleInstitut für Hochenergiephysik, Wien, AustriaM. FlechlInstitut für Hochenergiephysik, Wien, AustriaR. FrühwirthInstitut für Hochenergiephysik, Wien, AustriaM. JeitlerInstitut für Hochenergiephysik, Wien, AustriaNatascha KrammerInstitut für Hochenergiephysik, Wien, AustriaI. KrätschmerInstitut für Hochenergiephysik, Wien, AustriaD. LikoInstitut für Hochenergiephysik, Wien, AustriaT. MadlenerInstitut für Hochenergiephysik, Wien, AustriaI. MikulecInstitut für Hochenergiephysik, Wien, AustriaN. RadInstitut für Hochenergiephysik, Wien, AustriaJ. SchieckInstitut für Hochenergiephysik, Wien, AustriaR. SchöfbeckInstitut für Hochenergiephysik, Wien, AustriaM. SpanringInstitut für Hochenergiephysik, Wien, AustriaW. WaltenbergerInstitut für Hochenergiephysik, Wien, AustriaC.-E. WulzInstitut für Hochenergiephysik, Wien, AustriaM. ZaruckiInstitut für Hochenergiephysik, Wien, AustriaV. DrugakovV. MossolovJ. Suarez GonzalezM. R. DarwishUniversiteit Antwerpen, Antwerpen, BelgiumE.A. De WolfUniversiteit Antwerpen, Antwerpen, BelgiumD. Di CroceUniversiteit Antwerpen, Antwerpen, BelgiumX. JanssenUniversiteit Antwerpen, Antwerpen, BelgiumA. LelekUniversiteit Antwerpen, Antwerpen, BelgiumM. PietersUniversiteit Antwerpen, Antwerpen, BelgiumHaifa Rejeb SfarUniversiteit Antwerpen, Antwerpen, BelgiumH. Van HaevermaetUniversiteit Antwerpen, Antwerpen, BelgiumP. Van MechelenUniversiteit Antwerpen, Antwerpen, BelgiumS. Van PutteUniversiteit Antwerpen, Antwerpen, BelgiumN. Van RemortelUniversiteit Antwerpen, Antwerpen, BelgiumF. BlekmanVrije Universiteit Brussel, Brussel, BelgiumE. S. BolsVrije Universiteit Brussel, Brussel, BelgiumS. S. ChhibraVrije Universiteit Brussel, Brussel, BelgiumJ. D’HondtVrije Universiteit Brussel, Brussel, BelgiumJ. De ClercqVrije Universiteit Brussel, Brussel, BelgiumD. LontkovskyiVrije Universiteit Brussel, Brussel, BelgiumS. LowetteVrije Universiteit Brussel, Brussel, BelgiumI. MarchesiniVrije Universiteit Brussel, Brussel, BelgiumS. MoortgatVrije Universiteit Brussel, Brussel, BelgiumQ. PythonVrije Universiteit Brussel, Brussel, BelgiumK. SkovpenVrije Universiteit Brussel, Brussel, BelgiumS. TavernierVrije Universiteit Brussel, Brussel, BelgiumW. Van DoninckVrije Universiteit Brussel, Brussel, BelgiumP. Van MuldersVrije Universiteit Brussel, Brussel, BelgiumD. BeghinUniversité Libre de Bruxelles, Bruxelles, BelgiumB. BilinUniversité Libre de Bruxelles, Bruxelles, BelgiumB. ClerbauxUniversité Libre de Bruxelles, Bruxelles, BelgiumG. De LentdeckerUniversité Libre de Bruxelles, Bruxelles, BelgiumH. DelannoyUniversité Libre de Bruxelles, Bruxelles, BelgiumB. DorneyUniversité Libre de Bruxelles, Bruxelles, BelgiumL. FavartUniversité Libre de Bruxelles, Bruxelles, BelgiumA. GrebenyukUniversité Libre de Bruxelles, Bruxelles, BelgiumA. K. KalsiUniversité Libre de Bruxelles, Bruxelles, BelgiumL. MoureauxUniversité Libre de Bruxelles, Bruxelles, BelgiumA. PopovUniversité Libre de Bruxelles, Bruxelles, BelgiumN. PostiauUniversité Libre de Bruxelles, Bruxelles, BelgiumE. StarlingUniversité Libre de Bruxelles, Bruxelles, BelgiumL. ThomasUniversité Libre de Bruxelles, Bruxelles, BelgiumC. Vander VeldeUniversité Libre de Bruxelles, Bruxelles, BelgiumP. VanlaerUniversité Libre de Bruxelles, Bruxelles, BelgiumD. VanneromUniversité Libre de Bruxelles, Bruxelles, BelgiumT. CornelisGhent University, Ghent, BelgiumD. DoburGhent University, Ghent, BelgiumI. KhvastunovGhent University, Ghent, BelgiumM. NiedzielaGhent University, Ghent, BelgiumC. RoskasGhent University, Ghent, BelgiumM. TytgatGhent University, Ghent, BelgiumW. VerbekeGhent University, Ghent, BelgiumB. VermassenGhent University, Ghent, BelgiumM. VitGhent University, Ghent, BelgiumO. BonduUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. BrunoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. CaputoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. DavidUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumC. DelaereUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumM. DelcourtUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. GiammancoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumV. LemaitreUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumJ. PrisciandaroUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. SaggioUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumM. Vidal MaronoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. VischiaUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumJ. ZobecUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumF. L. AlvesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilG. A. AlvesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilG. Correia SilvaCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilC. HenselCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilA. MoraesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilP. Rebello TelesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, BrazilE. Belchior Batista Das ChagasUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilW. CarvalhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilJ. ChinellatoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, BrazilE. CoelhoUniversidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
2020en
ABI
Abstract
With increasing instantaneous luminosity at the LHC come additional reconstruction challenges. At high luminosity, many collisions occur simultaneously within one proton-proton bunch crossing. The isolation of an interesting collision from the additional 'pileup' collisions is needed for effective physics performance. In the CMS Collaboration, several techniques capable of mitigating the impact of these pileup collisions have been developed. Such methods include charged-hadron subtraction, pileup jet identification, isospin-based neutral particle '$\delta\beta$' correction, and, most recently, pileup per particle identification. This paper surveys the performance of these techniques for jet and missing transverse momentum reconstruction, as well as muon isolation. The analysis makes use of data corresponding to 35.9 fb$^{-1}$ collected with the CMS experiment in 2016 at a center-of-mass energy of 13 TeV. The performance of each algorithm is discussed for up to 70 simultaneous collisions per bunch crossing. Significant improvements are found in the identification of pileup jets, the jet energy, mass, and angular resolution, missing transverse momentum resolution, and muon isolation when using pileup per particle identification.
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Cited by 90 references