| Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at root s=8 tev using the atlas experiment | |
| Aad, G.122,123; Abbott, B.155; Abdallah, J.217; Abdinov, O.14; Aben, R.148,149; Abolins, M.128; AbouZeid, O. S.225; Abramowicz, H.219; Abreu, H.218; Abreu, R.45 | |
| 刊名 | European physical journal c
 |
| 2015-09-03 | |
| 卷号 | 75期号:9页码:25 |
| ISSN号 | 1434-6044 |
| DOI | 10.1140/epjc/s10052-015-3609-0 |
| 通讯作者 | Aad, g.() |
| 英文摘要 | Many extensions of the standard model predict the existence of charged heavy long-lived particles, such as r-hadrons or charginos. these particles, if produced at the large hadron collider, should bemoving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the atlas pixel detector. measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. a search for such particles with the atlas detector at the large hadron collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb(-1) of pp collisions at root s = 8 tev. no significant deviation from the standard model background expectation is observed, and lifetime-dependent upper limits on r-hadrons and chargino production are set. gluino r-hadrons with 10 ns lifetime and masses up to 1185 gev are excluded at 95 % confidence level, and so are charginos with 15 ns lifetime and masses up to 482 gev. |
| WOS关键词 | HADRON COLLIDERS ; SUPERSYMMETRY BREAKING ; SPLIT SUPERSYMMETRY ; SLEPTONS ; DETECTOR ; SQUARK |
| 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:000363330800007 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2176476 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aad, G. |
| 作者单位 | 1.Univ Adelaide, Dept Phys, Adelaide, SA, Australia 2.SUNY Albany, Dept Phys, Albany, NY 12222 USA 3.Univ Alberta, Dept Phys, Edmonton, AB, Canada 4.Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey 5.Istanbul Aydin Univ, Istanbul, Turkey 6.TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey 7.CNRS, IN2P3, LAPP, Annecy Le Vieux, France 8.Univ Savoie Mont Blanc, Annecy Le Vieux, France 9.Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA 10.Univ Arizona, Dept Phys, Tucson, AZ 85721 USA |
| 推荐引用方式 GB/T 7714 | Aad, G.,Abbott, B.,Abdallah, J.,et al. Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at root s=8 tev using the atlas experiment[J]. European physical journal c,2015,75(9):25. |
| APA | Aad, G..,Abbott, B..,Abdallah, J..,Abdinov, O..,Aben, R..,...&Harrington, R. D..(2015).Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at root s=8 tev using the atlas experiment.European physical journal c,75(9),25. |
| MLA | Aad, G.,et al."Search for metastable heavy charged particles with large ionisation energy loss in pp collisions at root s=8 tev using the atlas experiment".European physical journal c 75.9(2015):25. |
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