Study of hard double-parton scattering in four-jet events in pp collisions root s=7 tev with the atlas experiment
文献类型：期刊论文
| 作者 | Aaboud, M.191,192; Aad, G.121,122; Abbott, B.153; Abdallah, J.11; Abdinov, O.15; Abeloos, B.157; Aben, R.146,147; AbouZeid, O. S.195; Abraham, N. L.215; Abramowicz, H.219 |
| 刊名 | Journal of high energy physics
 |
| 出版日期 | 2016-11-21 |
| 期号 | 11页码:52 |
| ISSN号 | 1029-8479 |
| 关键词 | Hadron-hadron scattering (experiments) |
| DOI | 10.1007/jhep11(2016)110 |
| 通讯作者 | Aaboud, m.() |
| 英文摘要 | Inclusive four-jet events produced in proton-proton collisions at a centre-of mass energy of root s = 7 tev are analysed for the presence of hard double-parton scattering using data corresponding to an integrated luminosity of 37.3 pb(-1), collected with the atlas detector at the lhc. the contribution of hard double-parton scattering to the production of four -jet events is extracted using an artificial neural network, assuming that hard double-parton scattering can be approximated by an uncorrelated overlaying of dijet events. for events containing at least four jets with transverse momentum pt >= 20 gev and pseudorapidity vertical bar eta vertical bar <= 4.4, and at least one having pt >= 42.5 gev, the contribution of hard double-parton scattering is estimated to be fdps = 0.092(-0.011)(+0.0005) (stat.) (+0.03337)(-0.011) (syst.). after combining this measurement with those of the inclusive dijet and four -jet cross -sections in the appropriate phase space regions, the effective cross-section, sigma(eff,) was determined to be sigma(eff) = 14.9(-1.0)(+1.2) (stat.) (+5.1)(-3.8) (syst.) mb. this result is consistent within the quoted uncertainties with previous measurements of sigma(eff), performed at centre-of-mass energies between 63 gev and 8 tev using various final states, and it corresponds to 21(-6%)(+7) of the total inelastic cross-section measured at root s = 7 tev. the distributions of the observables sensitive to the contribution of hard double-parton scattering, corrected for detector effects, are also provided. |
| WOS关键词 | (P)OVER-BAR-P COLLISIONS ; MULTIPARTON INTERACTIONS ; HADRONIC COLLISIONS ; S=1.8 TEV ; COLLIDER ; QCD ; CALORIMETER ; EQUATIONS ; TESTS |
| 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:000399296300002 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177235 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaboud, M. |
| 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, 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 Mt 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 | Aaboud, M.,Aad, G.,Abbott, B.,et al. Study of hard double-parton scattering in four-jet events in pp collisions root s=7 tev with the atlas experiment[J]. Journal of high energy physics,2016(11):52. |
| APA | Aaboud, M..,Aad, G..,Abbott, B..,Abdallah, J..,Abdinov, O..,...&Hamacher, K..(2016).Study of hard double-parton scattering in four-jet events in pp collisions root s=7 tev with the atlas experiment.Journal of high energy physics(11),52. |
| MLA | Aaboud, M.,et al."Study of hard double-parton scattering in four-jet events in pp collisions root s=7 tev with the atlas experiment".Journal of high energy physics .11(2016):52. |
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