Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev
文献类型：期刊论文
| 作者 | Sirunyan, A. M.1; Tumasyan, A.1; Adam, W.2; Asilar, E.2; Bergauer, T.2; Brandstetter, J.2; Brondolin, E.2; Dragicevic, M.2; Eroe, J.2; Flechl, M.2 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2017-10-26 |
| 期号 | 10页码:48 |
| 关键词 | Dark matter Hadron-hadron scattering (experiments) Higgs physics Beyond standard model Supersymmetry |
| ISSN号 | 1029-8479 |
| DOI | 10.1007/jhep10(2017)180 |
| 通讯作者 | Sirunyan, a. m.() |
| 英文摘要 | A search for dark matter is performed looking for events with large missing transverse momentum and a higgs boson decaying either to a pair of bottom quarks or to a pair of photons. the data from proton-proton collisions at a center-of-mass energy of 13tev, collected in 2015 with the cms detector at the lhc, correspond to an integrated luminosity of 2.3 fb(-1). results are interpreted in the context of a z'-two-higgs-doublet model, where the gauge symmetry of the standard model is extended by a u(1) z' group, with a new massive z' gauge boson, and the higgs sector is extended with four additional higgs bosons. in this model, a high-mass resonance z' decays into a pseudoscalar boson a and a light sm-like scalar higgs boson, and the a decays to a pair of dark matter particles. no signi fi cant excesses are observed over the background prediction. combining results from the two decay channels yields exclusion limits in the signal cross section in the m(z')-m(a) phase space. for example, the observed data exclude the z' mass range from 600 to 1860 gev, for z' coupling strength gz' = 0: 8, the coupling of a with dark matter particles g(x) = 1, the ratio of the vacuum expectation values tan beta = 1, and m(a) = 300gev. the results of this analysis are valid for any dark matter particle mass below 100 gev. |
| WOS关键词 | ATLAS DETECTOR ; LHC ; PARTICLE |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000414813100001 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2176920 |
| 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.Catholic Univ Louvain, Louvain La Neuve, Belgium 10.Univ Mons, Mons, Belgium |
| 推荐引用方式 GB/T 7714 | Sirunyan, A. M.,Tumasyan, A.,Adam, W.,et al. Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev[J]. Journal of high energy physics,2017(10):48. |
| APA | Sirunyan, A. M..,Tumasyan, A..,Adam, W..,Asilar, E..,Bergauer, T..,...&Hassan, Q..(2017).Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev.Journal of high energy physics(10),48. |
| MLA | Sirunyan, A. M.,et al."Search for associated production of dark matter with a higgs boson decaying to b(b)over-bar or gamma gamma at root s=13 tev".Journal of high energy physics .10(2017):48. |
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