Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 tev and combination with 8 tev data
文献类型：期刊论文
| 作者 | Khachatryan, V.1; Sirunyan, A. M.1,199; 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 | Physics letters b
 |
| 出版日期 | 2017-05-10 |
| 卷号 | 768页码:57-80 |
| ISSN号 | 0370-2693 |
| 关键词 | Cms Dileptons Narrow resonances Extra dimensions |
| DOI | 10.1016/j.physletb.2017.02.010 |
| 通讯作者 | Khachatryan, v.() |
| 英文摘要 | A search for narrow resonances in dielectron and dimuon invariant mass spectra has been performed using data obtained from proton-proton collisions at root s = 13 tev collected with the cms detector. the integrated luminosity for the dielectron sample is 2.7 fb(-1) and for the dimuon sample 2.9 fb(-1). the sensitivity of the search is increased by combining these data with a previously analyzed set of data obtained at root s = 8 tev and corresponding to a luminosity of 20 fb(-1). no evidence for non-standard-model physics is found, either in the 13 tev data set alone, or in the combined data set. upper limits on the product of production cross section and branching fraction have also been calculated in a model-independent manner to enable interpretation in models predicting a narrow dielectron or dimuon resonance structure. limits are set on the masses of hypothetical particles that could appear in new-physics scenarios. for the z'(ssm) particle, which arises in the sequential standard model, and for the superstring inspired z'(psi) particle, 95% confidence level lower mass limits for the combined data sets and combined channels are found to be 3.37 and 2.82 tev, respectively. the corresponding limits for the lightest kaluza-klein graviton arising in the randall-sundrum model of extra dimensions with coupling parameters 0.01 and 0.10 are 1.46 and 3.11 tev, respectively. these results significantly exceed the limits based on the 8 tev lhc data. (c) 2017 the author. published by elsevier b.v. |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000400677700010 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177221 |
| 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 Hochenergiephys 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. Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 tev and combination with 8 tev data[J]. Physics letters b,2017,768:57-80. |
| APA | Khachatryan, V..,Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,...&Vazquez Valencia, F..(2017).Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 tev and combination with 8 tev data.Physics letters b,768,57-80. |
| MLA | Khachatryan, V.,et al."Search for narrow resonances in dilepton mass spectra in proton-proton collisions at root s=13 tev and combination with 8 tev data".Physics letters b 768(2017):57-80. |
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