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Publication Information
| Title | Measurement of the Target-Normal Single-Spin Asymmetry in Deep-Inelastic Scattering from the Reaction 3He{uparrow}(e,e')X | ||||
| Abstract | We report the first measurement of the target single-spin asymmetry in deep-inelastic scattering from the inclusive reaction 3He{uparrow}(e,e')X on a 3He gas target polarized normal to the lepton plane. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of 1.7<W<2.9 GeV, 1.0<Q2<4.0 GeV2 and 0.16<x<0.65. Neutron asymmetries were extracted using the effective nucleon polarization and measured proton-to-3He cross section ratios. The measured neutron asymmetries are negative with an average value of (?1.04+/-0.38)×10?2 for invariant mass W>2 GeV, which is non-zero at the 2.75sigma level. Theoretical calculations, which assume two-photon exchange with quasi-free quarks, predict a neutron asymmetry of O(10?4) when both photons couple to one quark, and O(10?2) for the photons coupling to different quarks. Our measured asymmetry agrees both in sign and magnitude | ||||
| Author(s) | Joe Katich, Xin Qian, Yuxiang Zhao, Kalyan Allada, Konrad Aniol, John Annand, Todd Averett, Fatiha Benmokhtar, William Bertozzi, Elliott Bradshaw, Peter Bosted, Alexandre Camsonne, Mustafa Canan, Gordon Cates, Chunhua Chen, Jian-Ping Chen, Wei Chen, Khem Chirapatpimol, Eugene Chudakov, Evaristo Cisbani, Juan Carlos Cornejo, Francesco Cusanno, Mark Macrae Dalton, Wouter Deconinck, Kees De Jager, Raffaele De Leo, Xiaoyan Deng, Alexandre Deur, Huaibo Ding, Peter Dolph, Chiranjib Dutta, Dipangkar Dutta, Lamiaa El Fassi, Salvatore Frullani, Haiyan Gao, Franco Garibaldi, Dave Gaskell, Ronald Gilman, Oleksandr Glamazdin, Serkan Golge, Lei Guo, David Hamilton, Ole Hansen, Douglas Higinbotham, Tim Holmstrom, Jijun Huang, Min Huang, Hassan Abdalla, Mauro Iodice, Ge Jin, Mark Kevin Jones, Aidan Kelleher, Wooyoung Kim, Ameya Kolarkar, Wolfgang Korsch, John LeRose, Xiaomei Li, Y. Li, Richard Lindgren, Nilanga Liyanage, Elena Long, Hai-jiang Lu, Dimitri Margaziotis, Pete Markowitz, Stefano Marrone, Dustin McNulty, Zein-Eddine Meziani, Robert Michaels, Bryan Moffit, Carlos Munoz Camacho, Sirish Nanda, Amrendra Narayan, Vladimir Nelyubin, Blaine Norum, Yoomin Oh, Mikhail Osipenko, Diana Parno, Jen-chieh Peng, Sarah Phillips, Matthew Posik, Andrew Puckett, Yi Qiang, Abdurahim Rakhman, Ron Ransome, Seamus Riordan, Arun Saha, Brad Sawatzky, Elaine Schulte, Albert Shahinyan, Mitra Hashemi Shabestari, Simon Sirca, Stepan Stepanyan, Ramesh Subedi, Vincent Sulkosky, Liguang Tang, Al Tobias, Guido Urciuoli, Ignazio Vilardi, Kebin Wang, Y. Wang, Bogdan Wojtsekhowski, Huan Yao, Yunxiu Ye, Z. Ye, Lulin Yuan, Xiaohui Zhan, Yi Zhang, Y.-W. Zhang, Bo Zhao, Xiaochao Zheng, Lingyan Zhu, Xiaofeng Zhu, Xing Zong | ||||
| Publication Date | July 2014 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall A | ||||
| Funding Source | |||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review Letters |
| Refereed | Yes |
| Volume | 113 |
| Issue | 02 |
| Page(s) | 022502 |
Attachments/Datasets/DOI Link
| Document(s) |
1311.0197v3.pdf
(STI Document)
|
| DOI Link | |
| Dataset(s) | (none) |
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