Measurement of e(+)e(-) Momentum and Angular Distributions from Linearly Polarized Photon Collisions
文献类型：期刊论文
| 作者 | Adam, J.19; Adamczyk, L.15; Adams, J. R.52; Adkins, J. K.43; Agakishiev, G.41; Aggarwal, M. M.13; Ahammed, Z.9; Alekseev, I16,48; Anderson, D. M.3; Aparin, A.41 |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2021-07-27 |
| 卷号 | 127期号:5页码:9 |
| ISSN号 | 0031-9007 |
| DOI | 10.1103/PhysRevLett.127.052302 |
| 通讯作者 | Brandenburg, J. D.() |
| 英文摘要 | The Breit-Wheeler process which produces matter and antimatter from photon collisions is experimentally investigated through the observation of 6085 exclusive electron-positron pairs in ultraperipheral Au + Au collisions at root s(NN) = 200 GeV. The measurements reveal a large fourth-order angular modulation of cos4 Delta phi = (16.8 +/- 2.5)% and smooth invariant mass distribution absent of vector mesons (phi, omega, and rho) at the experimental limit of <= 0.2% of the observed yields. The differential cross section as a function of e(+)e(-) pair transverse momentum P-perpendicular to peaks at low value with root < P-perpendicular to(2)> = 38.1 +/- 0.9 MeV and displays a significant centrality dependence. These features are consistent with QED calculations for the collision of linearly polarized photons quantized from the extremely strong electromagnetic fields generated by the highly charged Au nuclei at ultrarelativistic speed. The experimental results have implications for vacuum birefringence and for mapping the magnetic field which is important for emergent QCD phenomena. |
| WOS关键词 | POSITRON PAIR PRODUCTION ; HEAVY-ION COLLISIONS ; PB-PB COLLISIONS ; VACUUM BIREFRINGENCE ; SCATTERING ; PARTICLES ; RADIATION ; SPECTRA |
| 资助项目 | RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the U.S. DOE Office of Science ; U.S. National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science, the Ministry of Science and Technology of China and the Chinese Ministry of Education ; National Research Foundation of Korea, Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Hungarian National Research ; Development and Innovation Office ; New National Excellency Programme of the Hungarian Ministry of Human Capacities ; Department of Atomic Energy ; Department of Science and Technology of the Government of India ; National Science Centre of Poland, the Ministry of Science, ; Education and Sports of the Republic of Croatia ; RosAtom of Russia and German Bundesministerium fur Bildung ; Wissenschaft ; Forschung ; Technologie (BMBF) ; Helmholtz Association |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000679181800007 |
| 资助机构 | RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the U.S. DOE Office of Science ; U.S. National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science, the Ministry of Science and Technology of China and the Chinese Ministry of Education ; National Research Foundation of Korea, Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Hungarian National Research ; Development and Innovation Office ; New National Excellency Programme of the Hungarian Ministry of Human Capacities ; Department of Atomic Energy ; Department of Science and Technology of the Government of India ; National Science Centre of Poland, the Ministry of Science, ; Education and Sports of the Republic of Croatia ; RosAtom of Russia and German Bundesministerium fur Bildung ; Wissenschaft ; Forschung ; Technologie (BMBF) ; Helmholtz Association |
| 源URL | [http://119.78.100.186/handle/113462/136774]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Brandenburg, J. D. |
| 作者单位 | 1.Yale Univ, New Haven, CT 06520 USA 2.Temple Univ, Philadelphia, PA 19122 USA 3.Texas A&M Univ, College Stn, TX 77843 USA 4.Univ Texas Austin, Austin, TX 78712 USA 5.Tsinghua Univ, Beijing 100084, Peoples R China 6.Univ Tsukuba, Tsukuba, Ibaraki 3058571, Japan 7.US Naval Acad, Annapolis, MD 21402 USA 8.Valparaiso Univ, Valparaiso, IN 46383 USA 9.Variable Energy Cyclotron Ctr, Kolkata 700064, India 10.Warsaw Univ Technol, PL-00661 Warsaw, Poland |
| 推荐引用方式 GB/T 7714 | Adam, J.,Adamczyk, L.,Adams, J. R.,et al. Measurement of e(+)e(-) Momentum and Angular Distributions from Linearly Polarized Photon Collisions[J]. PHYSICAL REVIEW LETTERS,2021,127(5):9. |
| APA | Adam, J..,Adamczyk, L..,Adams, J. R..,Adkins, J. K..,Agakishiev, G..,...&Zyzak, M..(2021).Measurement of e(+)e(-) Momentum and Angular Distributions from Linearly Polarized Photon Collisions.PHYSICAL REVIEW LETTERS,127(5),9. |
| MLA | Adam, J.,et al."Measurement of e(+)e(-) Momentum and Angular Distributions from Linearly Polarized Photon Collisions".PHYSICAL REVIEW LETTERS 127.5(2021):9. |
入库方式： OAI收割
来源：近代物理研究所
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