Measurement of differential cross sections of isolated-photon plus heavy-flavour jet production in pp collisions at root s=8 tev using the atlas detector
文献类型：期刊论文
| 作者 | Aaboudd, M.195,197,198; Aad, G.; Abbott, B.160; Abdinov, O.15; Abeloos, B.164; Abidi, S. H.229; AbouZeid, O. S.201; Abraham, N. L.218; Abramowicz, H.222; Abreu, H.221 |
| 刊名 | Physics letters b
 |
| 出版日期 | 2018-01-10 |
| 卷号 | 776页码:295-317 |
| ISSN号 | 0370-2693 |
| DOI | 10.1016/j.physletb.2017.11.054 |
| 通讯作者 | Aaboudd, m.() |
| 英文摘要 | This letter presents the measurement of differential cross sections of isolated prompt photons produced in association with a b-jet or a c-jet. these final states provide sensitivity to the heavy-flavour content of the proton and aspects related to the modelling of heavy-flavour quarks in perturbative qcd. the measurement uses proton-proton collision data at a centre-of-mass energy of 8 tev recorded by the atlas detector at the lhc in 2012 corresponding to an integrated luminosity of up to 20.2 fb(-1). the differential cross sections are measured for each jet flavour with respect to the transverse energy of the leading photon in two photon pseudorapidity regions: vertical bar eta(gamma)vertical bar < 1.37 and 1.56 < vertical bar eta(gamma)vertical bar < 2.37. the measurement covers photon transverse energies 25 < e-t(gamma) < 400 gev and 25 < e-t(gamma) < 350 gev respectively for the two vertical bar eta(gamma)vertical bar regions. for each jet flavour, the ratio of the cross sections in the two vertical bar eta(gamma)vertical bar regions is also measured. the measurement is corrected for detector effects and compared to leading-order and next-to-leading-order perturbative qcd calculations, based on various treatments and assumptions about the heavy-flavour content of the proton. overall, the predictions agree well with the measurement, but some deviations are observed at high photon transverse energies. the total uncertainty in the measurement ranges between 13% and 66%, while the central gamma+b measurement exhibits the smallest uncertainty, ranging from 13% to 27%, which is comparable to the precision of the theoretical predictions. (c) 2017 the author. published by elsevier b.v. |
| WOS关键词 | INTRINSIC CHARM ; SHOWERS ; PROTON ; LHC |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| WOS类目 | Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields |
| 语种 | 英语 |
| WOS记录号 | WOS:000419641100043 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177923 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Aaboudd, 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 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 | Aaboudd, M.,Aad, G.,Abbott, B.,et al. Measurement of differential cross sections of isolated-photon plus heavy-flavour jet production in pp collisions at root s=8 tev using the atlas detector[J]. Physics letters b,2018,776:295-317. |
| APA | Aaboudd, M..,Aad, G..,Abbott, B..,Abdinov, O..,Abeloos, B..,...&Hamano, K..(2018).Measurement of differential cross sections of isolated-photon plus heavy-flavour jet production in pp collisions at root s=8 tev using the atlas detector.Physics letters b,776,295-317. |
| MLA | Aaboudd, M.,et al."Measurement of differential cross sections of isolated-photon plus heavy-flavour jet production in pp collisions at root s=8 tev using the atlas detector".Physics letters b 776(2018):295-317. |
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