Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
Autori
Khachatryan, V.Adžić, Petar
Milošević, Jovan
Reković, Vladimir
Đorđević, Miloš
Milenović, Predrag
CMS Collaboration (ukupan broj autora: 2306)
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 fb(-1) collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are presented. The corrections as a function of pseudorapidity eta and transverse momentum (pT) are extracted from data and simulated events combining several channels and methods. They account successively for the effects of pileup, uniformity of the detector response, and residual data-simulation jet energy scale differences. Further corrections, depending on the jet flavor and distance parameter (jet size) R, are also presented. The jet energy resolution is measured in data and simulated events and is studied as a function of pileup, jet size, and jet flavor. Typical jet energy resolutions at the central rapidities are 15-20% at 30 GeV, about 10% at 100 GeV, and 5% at 1 TeV. The studies exploit events with dijet topology, as well as photon+jet, Z+jet and multijet events.... Several new techniques are used to account for the various sources of jet energy scale corrections, and a full set of uncertainties, and their correlations, are provided. The final uncertainties on the jet energy scale are below 3% across the phase space considered by most analyses (p(T) GT 30 GeV and vertical bar eta vertical bar LT 5.0). In the barrel region (vertical bar eta vertical bar LT 1.3) an uncertainty below 1% for p(T) GT 30 GeV is reached, when excluding the jet flavor uncertainties, which are provided separately for different jet flavors. A new benchmark for jet energy scale determination at hadron colliders is achieved with 0.32% uncertainty for jets with p(T) of the order of 165-330 GeV, and vertical bar eta vertical bar LT 0.8.
Ključne reči:
Large detector-systems performance / Performance of High Energy Physics DetectorsIzvor:
Journal of Instrumentation, 2017, 12
DOI: 10.1088/1748-0221/12/02/P02014
ISSN: 1748-0221
WoS: 000397826200014
Scopus: 2-s2.0-85034950246
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Khachatryan, V. AU - Adžić, Petar AU - Milošević, Jovan AU - Reković, Vladimir AU - Đorđević, Miloš AU - Milenović, Predrag PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1488 AB - Improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 fb(-1) collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are presented. The corrections as a function of pseudorapidity eta and transverse momentum (pT) are extracted from data and simulated events combining several channels and methods. They account successively for the effects of pileup, uniformity of the detector response, and residual data-simulation jet energy scale differences. Further corrections, depending on the jet flavor and distance parameter (jet size) R, are also presented. The jet energy resolution is measured in data and simulated events and is studied as a function of pileup, jet size, and jet flavor. Typical jet energy resolutions at the central rapidities are 15-20% at 30 GeV, about 10% at 100 GeV, and 5% at 1 TeV. The studies exploit events with dijet topology, as well as photon+jet, Z+jet and multijet events. Several new techniques are used to account for the various sources of jet energy scale corrections, and a full set of uncertainties, and their correlations, are provided. The final uncertainties on the jet energy scale are below 3% across the phase space considered by most analyses (p(T) GT 30 GeV and vertical bar eta vertical bar LT 5.0). In the barrel region (vertical bar eta vertical bar LT 1.3) an uncertainty below 1% for p(T) GT 30 GeV is reached, when excluding the jet flavor uncertainties, which are provided separately for different jet flavors. A new benchmark for jet energy scale determination at hadron colliders is achieved with 0.32% uncertainty for jets with p(T) of the order of 165-330 GeV, and vertical bar eta vertical bar LT 0.8. T2 - Journal of Instrumentation T1 - Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV VL - 12 DO - 10.1088/1748-0221/12/02/P02014 ER -
@article{ author = "Khachatryan, V. and Adžić, Petar and Milošević, Jovan and Reković, Vladimir and Đorđević, Miloš and Milenović, Predrag", year = "2017", abstract = "Improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 fb(-1) collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are presented. The corrections as a function of pseudorapidity eta and transverse momentum (pT) are extracted from data and simulated events combining several channels and methods. They account successively for the effects of pileup, uniformity of the detector response, and residual data-simulation jet energy scale differences. Further corrections, depending on the jet flavor and distance parameter (jet size) R, are also presented. The jet energy resolution is measured in data and simulated events and is studied as a function of pileup, jet size, and jet flavor. Typical jet energy resolutions at the central rapidities are 15-20% at 30 GeV, about 10% at 100 GeV, and 5% at 1 TeV. The studies exploit events with dijet topology, as well as photon+jet, Z+jet and multijet events. Several new techniques are used to account for the various sources of jet energy scale corrections, and a full set of uncertainties, and their correlations, are provided. The final uncertainties on the jet energy scale are below 3% across the phase space considered by most analyses (p(T) GT 30 GeV and vertical bar eta vertical bar LT 5.0). In the barrel region (vertical bar eta vertical bar LT 1.3) an uncertainty below 1% for p(T) GT 30 GeV is reached, when excluding the jet flavor uncertainties, which are provided separately for different jet flavors. A new benchmark for jet energy scale determination at hadron colliders is achieved with 0.32% uncertainty for jets with p(T) of the order of 165-330 GeV, and vertical bar eta vertical bar LT 0.8.", journal = "Journal of Instrumentation", title = "Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV", volume = "12", doi = "10.1088/1748-0221/12/02/P02014" }
Khachatryan, V., Adžić, P., Milošević, J., Reković, V., Đorđević, M.,& Milenović, P.. (2017). Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV. in Journal of Instrumentation, 12. https://doi.org/10.1088/1748-0221/12/02/P02014
Khachatryan V, Adžić P, Milošević J, Reković V, Đorđević M, Milenović P. Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV. in Journal of Instrumentation. 2017;12. doi:10.1088/1748-0221/12/02/P02014 .
Khachatryan, V., Adžić, Petar, Milošević, Jovan, Reković, Vladimir, Đorđević, Miloš, Milenović, Predrag, "Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV" in Journal of Instrumentation, 12 (2017), https://doi.org/10.1088/1748-0221/12/02/P02014 . .