Jet energy scale and resolution in the cms experiment in pp collisions at 8 tev
文献类型：期刊论文
| 作者 | Khachatryan, V.; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Ero, J.2 |
| 刊名 | Journal of instrumentation
 |
| 出版日期 | 2017-02-01 |
| 卷号 | 12页码:94 |
| 关键词 | Large detector-systems performance Performance of high energy physics detectors |
| ISSN号 | 1748-0221 |
| DOI | 10.1088/1748-0221/12/02/p02014 |
| 通讯作者 | Khachatryan, v.() |
| 英文摘要 | 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) > 30 gev and vertical bar eta vertical bar < 5.0). in the barrel region (vertical bar eta vertical bar < 1.3) an uncertainty below 1% for p(t) > 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 < 0.8. |
| WOS关键词 | HADRON-COLLISIONS ; HERWIG PLUS ; ALGORITHM |
| WOS研究方向 | Instruments & Instrumentation |
| WOS类目 | Instruments & Instrumentation |
| 语种 | 英语 |
| WOS记录号 | WOS:000397826200014 |
| 出版者 | IOP PUBLISHING LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176712 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Khachatryan, V. |
| 作者单位 | 1.Yerevan Phys Inst, Yerevan, Armenia 2.OeAW, Inst Hochenergiephys, Vienna, Austria 3.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 4.Univ Antwerp, Antwerp, Belgium 5.Vrije Univ Brussel, Brussels, Belgium 6.Univ Libre Bruxelles, Brussels, Belgium 7.Univ Ghent, Ghent, Belgium 8.Catholic Univ Louvain, Louvain, Belgium 9.Univ Mons, Mons, Belgium 10.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil |
| 推荐引用方式 GB/T 7714 | Khachatryan, V.,Sirunyan, A. M.,Tumasyan, A.,et al. Jet energy scale and resolution in the cms experiment in pp collisions at 8 tev[J]. Journal of instrumentation,2017,12:94. |
| APA | Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Ryu, G..(2017).Jet energy scale and resolution in the cms experiment in pp collisions at 8 tev.Journal of instrumentation,12,94. |
| MLA | Khachatryan, V.,et al."Jet energy scale and resolution in the cms experiment in pp collisions at 8 tev".Journal of instrumentation 12(2017):94. |
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