Evidence for light-by-light scattering in heavy-ion collisions with the atlas detector at the lhc
文献类型：期刊论文
| 作者 | Aaboud, M.195,196; Aad, G.125,126; Abbott, B.121,157; Abdallah, J.11; Abdinov, O.15; Abeloos, B.161; Abidi, S. H.227; AbouZeid, O. S.199; Abraham, N. L.216; Abramowicz, H.220 |
| 刊名 | Nature physics
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 13期号:9页码:852-+ |
| ISSN号 | 1745-2473 |
| DOI | 10.1038/nphys4208 |
| 通讯作者 | Aaboud, m.() |
| 英文摘要 | Light-by-light scattering (gamma gamma -> gamma gamma) is a quantum-mechanical process that is forbidden in the classical theory of electrodynamics. this reaction is accessible at the large hadron collider thanks to the large electromagnetic field strengths generated by ultra-relativistic colliding lead ions. using 480 mu b(-1) of lead-lead collision data recorded at a centre-of-mass energy per nucleon pair of 5.02 tev by the atlas detector, here we report evidence for light-by-light scattering. a total of 13 candidate events were observed with an expected background of 2.6 +/- 0.7 events. after background subtraction and analysis corrections, the fiducial cross-section of the process pb + pb (gamma gamma) -> pb-(center dot) + pb-(center dot) gamma gamma, for photon transverse energy e-t > 3 gev, photon absolute pseudorapidity vertical bar eta vertical bar < 2.4, diphoton invariant mass greater than 6 gev, diphoton transverse momentum lower than 2 gev and diphoton acoplanarity below 0.01, is measured to be 70 +/- 24 (stat.) +/- 17 (syst.) nb, which is in agreement with the standard model predictions. |
| WOS关键词 | DELBRUCK SCATTERING ; PERIPHERAL COLLISIONS ; PAIR PRODUCTION ; GAMMA-GAMMA ; COLLIDERS ; POSITRON ; ENERGIES ; PHYSICS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000409235100017 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177012 |
| 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 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 | Aaboud, M.,Aad, G.,Abbott, B.,et al. Evidence for light-by-light scattering in heavy-ion collisions with the atlas detector at the lhc[J]. Nature physics,2017,13(9):852-+. |
| APA | Aaboud, M..,Aad, G..,Abbott, B..,Abdallah, J..,Abdinov, O..,...&Hanagaki, K..(2017).Evidence for light-by-light scattering in heavy-ion collisions with the atlas detector at the lhc.Nature physics,13(9),852-+. |
| MLA | Aaboud, M.,et al."Evidence for light-by-light scattering in heavy-ion collisions with the atlas detector at the lhc".Nature physics 13.9(2017):852-+. |
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