Search for direct top squark pair production in final states with two leptons in root s=13 tev pp collisions with the atlas detector
文献类型：期刊论文
| 作者 | Aaboud, M.193,194; Aad, G.125,126; Abbott, B.156; Abdinov, O.16; Abeloos, B.160; Abidi, S. H.225; AbouZeid, O. S.197; Abraham, N. L.214; Abramowicz, H.218; Abreu, H.217 |
| 刊名 | European physical journal c
 |
| 出版日期 | 2017-12-21 |
| 卷号 | 77期号:12页码:41 |
| ISSN号 | 1434-6044 |
| DOI | 10.1140/epjc/s10052-017-5445-x |
| 通讯作者 | Aaboud, m.() |
| 英文摘要 | The results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb(-1) of integrated luminosity from proton-proton collisions at root s = 13 tev collected by the atlas detector at the large hadron collider. to cover a range of mass differences between the top squark (t) over tilde and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay (t) over tilde -> b (chi) over tilde (+/-)(1) into a b-quark and the lightest chargino with (chi) over tilde (+/-)(1) w (chi) over tilde (0)(1),the decay (t) over tilde -> t (chi) over tilde (0)(1) into an on-shell top quark and the lightest neutralino, the three-body decay (t) over tilde -> bw (chi) over tilde (0)(1) and the four-body decay (t) over tilde -> bl nu(chi) over tilde (0)(1). no significant excess of events is observed above the standard model background for any selection, and limits on top squarks are set as a function of the (t) over tilde and (chi) over tilde (0)(1) masses. the results exclude at 95% confidence level (t) over tilde masses up to about 720 gev, extending the exclusion region of supersymmetric parameter space covered by previous searches. |
| WOS关键词 | CALCULATING SUPERSYMMETRIC SPECTRA ; PROTON-PROTON COLLISIONS ; HADRON COLLIDERS ; GLUINO PRODUCTION ; MEASURING MASSES ; CROSS-SECTION ; PARTICLE ; PROGRAM ; EXTENSION ; SPHENO |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000418591100004 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2178272 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaboud, M. |
| 作者单位 | 1.CERN, CH-1211 Geneva 23, Switzerland 2.Univ Adelaide, Dept Phys, Adelaide, SA, Australia 3.SUNY Albany, Dept Phys, Albany, NY 12222 USA 4.Univ Alberta, Dept Phys, Edmonton, AB, Canada 5.Ankara Univ, Dept Phys, Ankara, Turkey 6.Istanbul Aydin Univ, Istanbul, Turkey 7.Univ Econ & Technol, TOBB, Div Phys, Ankara, Turkey 8.LAPP, CNRS, IN2P3, GUILL Annecy Le Vieux, France 9.Univ Savoie Mont Blanc, Annecy Le Vieux, France 10.Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA |
| 推荐引用方式 GB/T 7714 | Aaboud, M.,Aad, G.,Abbott, B.,et al. Search for direct top squark pair production in final states with two leptons in root s=13 tev pp collisions with the atlas detector[J]. European physical journal c,2017,77(12):41. |
| APA | Aaboud, M..,Aad, G..,Abbott, B..,Abdinov, O..,Abeloos, B..,...&Halladjian, G..(2017).Search for direct top squark pair production in final states with two leptons in root s=13 tev pp collisions with the atlas detector.European physical journal c,77(12),41. |
| MLA | Aaboud, M.,et al."Search for direct top squark pair production in final states with two leptons in root s=13 tev pp collisions with the atlas detector".European physical journal c 77.12(2017):41. |
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