Identification of heavy-flavour jets with the cms detector in pp collisions at 13 tev
文献类型：期刊论文
| 作者 | Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Ambrogi, F.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2 |
| 刊名 | Journal of instrumentation
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 13页码:117 |
| ISSN号 | 1748-0221 |
| 关键词 | Particle identification methods Pattern recognition, cluster finding, calibration and fitting methods Performance of high energy physics detectors |
| DOI | 10.1088/1748-0221/13/05/p05011 |
| 通讯作者 | Sirunyan, a. m.() |
| 英文摘要 | 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). |
| WOS关键词 | GLUON SPLITTING RATE ; HADRONIC Z-DECAYS ; GEANT4 ; PAIRS |
| WOS研究方向 | Instruments & Instrumentation |
| WOS类目 | Instruments & Instrumentation |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000431716900005 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177602 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Sirunyan, A. M. |
| 作者单位 | 1.Yerevan Phys Inst, Yerevan, Armenia 2.Inst Hochenergiephys, Vienna, Austria 3.Inst Nucl Problems, Minsk, BELARUS 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 La Neuve, Belgium 9.Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil 10.Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil |
| 推荐引用方式 GB/T 7714 | Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Identification of heavy-flavour jets with the cms detector in pp collisions at 13 tev[J]. Journal of instrumentation,2018,13:117. |
| APA | Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Ambrogi, F..,Asilar, E..,...&Ramirez-Sanchez, G..(2018).Identification of heavy-flavour jets with the cms detector in pp collisions at 13 tev.Journal of instrumentation,13,117. |
| MLA | Sirunyan, A. M.,et al."Identification of heavy-flavour jets with the cms detector in pp collisions at 13 tev".Journal of instrumentation 13(2018):117. |
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