Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev
文献类型：期刊论文
| 作者 | Sirunyan, A. M.1; Sirunyan, A. M.; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2 |
| 刊名 | Physical review d
 |
| 出版日期 | 2017-08-22 |
| 卷号 | 96期号:3页码:31 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/physrevd.96.032002 |
| 通讯作者 | Sirunyan, a. m.() |
| 英文摘要 | A measurement of the top quark mass (m-t) in the dileptonic t (t) over bar decay channel is performed using data from proton-proton collisions at a center-of-mass energy of 8 tev. the data was recorded by the cms experiment at the lhc and corresponds to an integrated luminosity of 19.7 +/- 0.5 fb(-1). events are selected with two oppositely charged leptons (l = e, mu) and two jets identified as originating from b quarks. the analysis is based on three kinematic observables whose distributions are sensitive to the value of mt. an invariant mass observable, m-bl, and a "stransverse mass" observable, m-t2, are employed in a simultaneous fit to determine the value of m-t and an overall jet energy scale factor (jsf). a complementary approach is used to construct an invariant mass observable, m-blv, that is combined with m-t2 to measure m-t. the shapes of the observables, along with their evolutions in m-t and jsf, are modeled by a nonparametric gaussian process regression technique. the sensitivity of the observables to the value of m-t is investigated using a fisher information density method. the top quark mass is measured to be 172.22 +/- 0.18(stat)(-0.93)(+0.89) (syst) gev. |
| WOS关键词 | TEVATRON |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000408116900001 |
| 出版者 | AMER PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177008 |
| 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, Byelarus 4.Natl Ctr Particle & High Energy Phys, Minsk, Byelarus 5.Univ Antwerp, Antwerp, Belgium 6.Vrije Univ Brussel, Brussels, Belgium 7.Univ Libre Bruxelles, Brussels, Belgium 8.Univ Ghent, Ghent, Belgium 9.Univ Catholic Louvain, Louvain La Neuve, Belgium 10.Univ Mons, Mons, Belgium |
| 推荐引用方式 GB/T 7714 | Sirunyan, A. M.,Sirunyan, A. M.,Tumasyan, A.,et al. Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev[J]. Physical review d,2017,96(3):31. |
| APA | Sirunyan, A. M..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Ahmad, A..(2017).Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev.Physical review d,96(3),31. |
| MLA | Sirunyan, A. M.,et al."Measurement of the top quark mass in the dileptonic t(t)over-bar decay channel using the mass observables m-bl, m-t2, and m-blv in pp collisions at root=8 tev".Physical review d 96.3(2017):31. |
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