A new calibration method for charm jet identification validated with proton-proton collision events at √s = 13 TeV
A. TumasyanYerevan Physics Institute, Yerevan, ArmeniaW. AdamInstitut für Hochenergiephysik, Vienna, AustriaJanik Walter AndrejkovicInstitut für Hochenergiephysik, Vienna, AustriaT. BergauerInstitut für Hochenergiephysik, Vienna, AustriaS. ChatterjeeInstitut für Hochenergiephysik, Vienna, AustriaM. DragicevicInstitut für Hochenergiephysik, Vienna, AustriaA. Escalante Del ValleInstitut für Hochenergiephysik, Vienna, AustriaRudolf FruehwirthTU Wien, Wien, AustriaM. JeitlerInstitute for Nuclear Problems, Minsk, BelarusNatascha KrammerInstitut für Hochenergiephysik, Vienna, AustriaL. LechnerInstitut für Hochenergiephysik, Vienna, AustriaD. LikoInstitut für Hochenergiephysik, Vienna, AustriaI. MikulecInstitut für Hochenergiephysik, Vienna, AustriaP. PaulitschInstitut für Hochenergiephysik, Vienna, AustriaF. M. PittersInstitut für Hochenergiephysik, Vienna, AustriaJ. SchieckInstitute for Nuclear Problems, Minsk, BelarusR. SchöfbeckInstitut für Hochenergiephysik, Vienna, AustriaMarkus SpanringInstitut für Hochenergiephysik, Vienna, AustriaS. TemplInstitut für Hochenergiephysik, Vienna, AustriaW. WaltenbergerInstitut für Hochenergiephysik, Vienna, AustriaC.-E. WulzTU Wien, Wien, AustriaV. ChekhovskyA. LitominV. MakarenkoM. R. DarwishInfinis de Lyon (IP2I ), Villeurbanne, FranceE. A. De WolfUniversiteit Antwerpen, Antwerpen, BelgiumX. JanssenUniversiteit Antwerpen, Antwerpen, BelgiumT. KelloUniversiteit Antwerpen, Antwerpen, BelgiumA. LelekUniversiteit Antwerpen, Antwerpen, BelgiumHaifa Rejeb SfarUniversiteit 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, BelgiumJ. D’HondtVrije Universiteit Brussel, Brussel, BelgiumJ. De ClercqVrije Universiteit Brussel, Brussel, BelgiumM. DelcourtVrije Universiteit Brussel, Brussel, BelgiumH. El FahamVrije Universiteit Brussel, Brussel, BelgiumS. LowetteVrije Universiteit Brussel, Brussel, BelgiumS. MoortgatVrije Universiteit Brussel, Brussel, BelgiumA. MortonVrije Universiteit Brussel, Brussel, BelgiumD. MüllerVrije Universiteit Brussel, Brussel, BelgiumA. R. SahasransuVrije Universiteit Brussel, Brussel, BelgiumS. TavernierVrije Universiteit Brussel, Brussel, BelgiumWalter Van DoninckVrije Universiteit Brussel, Brussel, BelgiumP. Van MuldersVrije Universiteit Brussel, Brussel, BelgiumDiego BeghinUniversité Libre de Bruxelles, Bruxelles, BelgiumB. BilinUniversité Libre de Bruxelles, Bruxelles, BelgiumB. ClerbauxUniversité Libre de Bruxelles, Bruxelles, BelgiumG. De LentdeckerUniversité Libre de Bruxelles, Bruxelles, BelgiumL. FavartUniversité Libre de Bruxelles, Bruxelles, BelgiumA. GrebenyukUniversité Libre de Bruxelles, Bruxelles, BelgiumA. K. KalsiUniversité Libre de Bruxelles, Bruxelles, BelgiumK. LeeUniversité Libre de Bruxelles, Bruxelles, BelgiumM. MahdavikhorramiUniversité Libre de Bruxelles, Bruxelles, BelgiumI. MakarenkoUniversité Libre de Bruxelles, Bruxelles, BelgiumL. MoureauxUniversité Libre de Bruxelles, Bruxelles, BelgiumL. PétréUniversité Libre de Bruxelles, Bruxelles, BelgiumA. PopovUniversité Libre de Bruxelles, Bruxelles, BelgiumNicolas PostiauUniversité Libre de Bruxelles, Bruxelles, BelgiumE. StarlingUniversité Libre de Bruxelles, Bruxelles, BelgiumLaurent ThomasUniversité Libre de Bruxelles, Bruxelles, BelgiumM. Vanden BemdenUniversité Libre de Bruxelles, Bruxelles, BelgiumC. Vander VeldeUniversité Libre de Bruxelles, Bruxelles, BelgiumP. VanlaerUniversité Libre de Bruxelles, Bruxelles, BelgiumD. VanneromUniversité Libre de Bruxelles, Bruxelles, BelgiumLiam WezenbeekUniversité Libre de Bruxelles, Bruxelles, BelgiumT. CornelisGhent University, Ghent, BelgiumD. DoburGhent University, Ghent, BelgiumJ. KnolleGhent University, Ghent, BelgiumLuka LambrechtGhent University, Ghent, BelgiumGianny MestdachGhent University, Ghent, BelgiumM. NiedzielaGhent University, Ghent, BelgiumC. RoskasGhent University, Ghent, BelgiumAmrutha SamalanGhent University, Ghent, BelgiumK. SkovpenGhent University, Ghent, BelgiumM. TytgatGhent University, Ghent, BelgiumWillem VerbekeGhent University, Ghent, BelgiumB. VermassenGhent University, Ghent, BelgiumMartina VitGhent University, Ghent, BelgiumA. BethaniUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. BrunoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumF. BuryUniversité 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, BelgiumI. S. DonertasUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. GiammancoUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. JaffelUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumSa. JainUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumV. LemaitreUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumK. MondalUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumJessica PrisciandaroUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumA. TaliercioUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumM. TeklishynUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumT. T. TranUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumP. VischiaUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumS. WertzUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumG. A. AlvesCentro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil
ABI
Abstract
Abstract Many measurements at the LHC require efficient identification of heavy-flavour jets, i.e. jets originating from bottom (b) or charm (c) quarks. An overview of the algorithms used to identify c jets is described and a novel method to calibrate them is presented. This new method adjusts the entire distributions of the outputs obtained when the algorithms are applied to jets of different flavours. It is based on an iterative approach exploiting three distinct control regions that are enriched with either b jets, c jets, or light-flavour and gluon jets. Results are presented in the form of correction factors evaluated using proton-proton collision data with an integrated luminosity of 41.5 fb -1 at √s = 13 TeV, collected by the CMS experiment in 2017. The closure of the method is tested by applying the measured correction factors on simulated data sets and checking the agreement between the adjusted simulation and collision data. Furthermore, a validation is performed by testing the method on pseudodata, which emulate various mismodelling conditions. The calibrated results enable the use of the full distributions of heavy-flavour identification algorithm outputs, e.g. as inputs to machine-learning models. Thus, they are expected to increase the sensitivity of future physics analyses.
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