Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV
dc.WoS.categories | Instruments & Instrumentation | en_US |
dc.authorid | 0000-0002-9007-8260 | en_US |
dc.contributor.author | Yetkin, Elif Aslı | |
dc.date.accessioned | 2020-11-03T13:21:13Z | |
dc.date.available | 2020-11-03T13:21:13Z | |
dc.date.issued | 2018-05 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
dc.description.abstract | Many measurements and searches for physics beyond the standard model at the LHC rely on the efficient identification of heavy-flavour jets, i.e. jets originating from bottom or charm quarks. In this paper, the discriminating variables and the algorithms used for heavy-flavour jet identification during the first years of operation of the CMS experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, are presented. Heavy-flavour jet identification algorithms have been improved compared to those used previously at centre-of-mass energies of 7 and 8 TeV. For jets with transverse momenta in the range expected in simulated t (t) over bar events, these new developments result in an efficiency of 68% for the correct identification of a b jet for a probability of 1% of misidentifying a light-flavour jet. The improvement in relative efficiency at this misidentification probability is about 15%, compared to previous CMS algorithms. In addition, for the first time algorithms have been developed to identify jets containing two b hadrons in Lorentz-boosted event topologies, as well as to tag c jets. The large data sample recorded in 2016 at a centre-of-mass energy of 13 TeV has also allowed the development of new methods to measure the efficiency and misidentification probability of heavy-flavour jet identification algorithms. The b jet identification efficiency is measured with a precision of a few per cent at moderate jet transverse momenta (between 30 and 300 GeV) and about 5% at the highest jet transverse momenta (between 500 and 1000 GeV). | en_US |
dc.fullTextLevel | Full Text | en_US |
dc.identifier.doi | 10.1088/1748-0221/13/05/P05011 | en_US |
dc.identifier.issn | 1748-0221 | |
dc.identifier.uri | https://hdl.handle.net/11411/2411 | |
dc.identifier.uri | https://doi.org/10.1088/1748-0221/13/05/P05011 | |
dc.identifier.wos | WOS:000431716900005 | en_US |
dc.identifier.wosquality | Q3 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.language.iso | en | en_US |
dc.national | National | en_US |
dc.numberofauthors | 200+ | en_US |
dc.relation.ispartof | JOURNAL OF INSTRUMENTATION | en_US |
dc.relation.publicationcategory | Makale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Particle identification methods | en_US |
dc.subject | Pattern recognition, cluster finding, calibration and fitting methods | en_US |
dc.subject | Performance of High Energy Physics Detectors | en_US |
dc.title | Identification of heavy-flavour jets with the CMS detector in pp collisions at 13 TeV | en_US |
dc.type | Article | en_US |
dc.volume | 13 | en_US |