Measurement of the Target-Normal Single-Spin Asymmetry in Deep-Inelastic Scattering from the ReactionHe3↑(e,e′)X Academic Article uri icon

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abstract

  • We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction 3)He(↑)(e,e')X on a polarized (3)He gas target. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation but can be nonzero if two-photon-exchange contributions are included. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of 1.72  GeV, which is nonzero at the 2.89σ level. Our measured asymmetry agrees both in sign and magnitude with a two-photon-exchange model prediction that uses input from the Sivers transverse momentum distribution obtained from semi-inclusive deep-inelastic scattering.

authors

  • Katich, J
  • Qian, X
  • Zhao, YX
  • Allada, K
  • Aniol, K
  • Annand, JRM
  • Averett, T
  • Benmokhtar, F
  • Bertozzi, W
  • Bradshaw, PC
  • Bosted, P
  • Camsonne, A
  • Canan, M
  • Cates, GD
  • Chen, C
  • Chen, J-P
  • Chen, W
  • Chirapatpimol, K
  • Chudakov, E
  • Cisbani, E
  • Cornejo, JC
  • Cusanno, F
  • Dalton, MM
  • Deconinck, W
  • de Jager, CW
  • De Leo, R
  • Deng, X
  • Deur, A
  • Ding, H
  • Dolph, PAM
  • Dutta, C
  • Dutta, D
  • El Fassi, L
  • Frullani, S
  • Gao, H
  • Garibaldi, F
  • Gaskell, D
  • Gilad, S
  • Gilman, R
  • Glamazdin, O
  • Golge, S
  • Guo, L
  • Hamilton, D
  • Hansen, O
  • Higinbotham, DW
  • Holmstrom, T
  • Huang, J
  • Huang, M
  • Ibrahim, HF
  • Iodice, M
  • Jiang, X
  • Jin, G
  • Jones, MK
  • Kelleher, A
  • Kim, W
  • Kolarkar, A
  • Korsch, W
  • LeRose, JJ
  • Li, X
  • Li, Y
  • Lindgren, R
  • Liyanage, N
  • Long, E
  • Lu, H-J
  • Margaziotis, DJ
  • Markowitz, P
  • Marrone, S
  • McNulty, D
  • Meziani, Z-E
  • Michaels, R
  • Moffit, B
  • Muñoz Camacho, C
  • Nanda, S
  • Narayan, A
  • Nelyubin, V
  • Norum, B
  • Oh, Y
  • Osipenko, M
  • Parno, D
  • Peng, JC
  • Phillips, SK
  • Posik, M
  • Puckett, AJR
  • Qiang, Y
  • Rakhman, A
  • Ransome, RD
  • Riordan, S
  • Saha, A
  • Sawatzky, B
  • Schulte, E
  • Shahinyan, A
  • Shabestari, MH
  • Širca, S
  • Stepanyan, S
  • Subedi, R
  • Sulkosky, V
  • Tang, L-G
  • Tobias, A
  • Urciuoli, GM
  • Vilardi, I
  • Wang, K
  • Wang, Y
  • Wojtsekhowski, B
  • Yan, X
  • Yao, H
  • Ye, Y
  • Ye, Z
  • Yuan, L
  • Zhan, X
  • Zhang, Y
  • Zhang, Y-W
  • Zhao, Benzhong
  • Zheng, X
  • Zhu, L
  • Zhu, X
  • Zong, X

publication date

  • July 11, 2014