Measurements of the zz production cross sections in the 2l2 nu channel in proton-proton collisions at root s=7 and 8 tev and combined constraints on triple gauge couplings
文献类型：期刊论文
| 作者 | Khachatryan, V.1; Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Bergauer, T.2; Dragicevic, M.2; Eroe, J.2; Friedl, M.2; Fruehwirth, R.2,189; Ghete, V. M.2 |
| 刊名 | European physical journal c
 |
| 出版日期 | 2015-10-29 |
| 卷号 | 75期号:10页码:26 |
| ISSN号 | 1434-6044 |
| DOI | 10.1140/epjc/s10052-015-3706-0 |
| 通讯作者 | Khachatryan, v.() |
| 英文摘要 | Measurements of the zz production cross sections in proton-proton collisions at center-of-mass energies of 7 and 8 tev are presented. candidate events for the leptonic decay mode zz -> 2l2 nu. where l denotes an electron or a muon, are reconstructed and selected from data corresponding to an integrated luminosity of 5.1 (19.6) fb(-1) at 7 (8) tev collected with the cms experiment. the measured cross sections, sigma(pp -> zz) = 5.1(1.4)(+1.5) (stat)(-1.1)(+1.4) (syst) +/- 0.1 (lumi) pb at 7 tev, and 7.2(-0.8)(+0.8) (stat)(1.5)(+1.9) (syst) +/- 0.2 (lumi) pb at 8 tev, are in good agreement with the standard model predictions with next-to-leading-order accuracy. the selected data are analyzed to search for anomalous triple gauge couplings involving the zz final state. in the absence of any deviation from the standard model predictions, limits are set on the relevant parameters. these limits are then combined with the previously published cms results for zz in 4l final states, yielding the most stringent constraints on the anomalous couplings. |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000379515400002 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176599 |
| 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.Inst Hochenergiephy OeAW, 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 La Neuve, 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. Measurements of the zz production cross sections in the 2l2 nu channel in proton-proton collisions at root s=7 and 8 tev and combined constraints on triple gauge couplings[J]. European physical journal c,2015,75(10):26. |
| APA | Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Bergauer, T..,...&Shmatov, S..(2015).Measurements of the zz production cross sections in the 2l2 nu channel in proton-proton collisions at root s=7 and 8 tev and combined constraints on triple gauge couplings.European physical journal c,75(10),26. |
| MLA | Khachatryan, V.,et al."Measurements of the zz production cross sections in the 2l2 nu channel in proton-proton collisions at root s=7 and 8 tev and combined constraints on triple gauge couplings".European physical journal c 75.10(2015):26. |
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