Precision measurements of A1n in the deep inelastic regime
- Parno, D.S.
- Flay, D.
- Posik, M.
- Allada, K.
- Armstrong, W.
- Averett, T.
- Benmokhtar, F.
- Bertozzi, W.
- Camsonne, A.
- Canan, M.
- Cates, G.D.
- Chen, C.
- Chen, J.-P.
- Choi, S.
- Chudakov, E.
- Cusanno, F.
- Dalton, M.M.
- Deconinck, W.
- de Jager, C.W.
- Deng, X.
- Deur, A.
- Dutta, C.
- El Fassi, L.
- Franklin, G.B.
- Friend, M.
- Gao, H.
- Garibaldi, F.
- Gilad, S.
- Gilman, R.
- Glamazdin, O.
- Golge, S.
- Gomez, J.
- Guo, L.
- Hansen, O.
- Higinbotham, D.W.
- Holmstrom, T.
- Huang, J.
- Hyde, C.
- Ibrahim, H.F.
- Jiang, X.
- Jin, G.
- Katich, J.
- Kelleher, A.
- Kolarkar, A.
- Korsch, W.
- Kumbartzki, G.
- LeRose, J.J.
- Lindgren, R.
- Liyanage, N.
- Long, E.
- Lukhanin, A.
- Mamyan, V.
- McNulty, D.
- Meziani, Z.-E.
- Michaels, R.
- Mihovilovič, M.
- Moffit, B.
- Muangma, N.
- Nanda, S.
- Narayan, A.
- Nelyubin, V.
- Norum, B.
- Nuruzzaman,
- Oh, Y.
- Peng, J.C.
- Qian, X.
- Qiang, Y.
- Rakhman, A.
- Riordan, S.
- Saha, A.
- Sawatzky, B.
- Shabestari, M.H.
- Shahinyan, A.
- Širca, S.
- Solvignon, P.
- Subedi, R.
- Sulkosky, V.
- Tobias, W.A.
- Troth, W.
- Wang, D.
- Wang, Y.
- Wojtsekhowski, B.
- Yan, X.
- Yao, H.
- Ye, Y.
- Ye, Z.
- Yuan, L.
- Zhan, X.
- Zhang, Y.
- Zhang, Y.-W.
- Zhao, B.
- Zheng, X.
DOIAbstract
AbstractWe have performed precision measurements of the double-spin virtual-photon asymmetry A1 on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer and a longitudinally and transversely polarized 3He target. Our data cover a wide kinematic range 0.277≤x≤0.548 at an average Q2 value of 3.078 (GeV/c)2, doubling the available high-precision neutron data in this x range. We have combined our results with world data on proton targets to make a leading-order extraction of the ratio of polarized-to-unpolarized parton distribution functions for up quarks and for down quarks in the same kinematic range. Our data are consistent with a previous observation of an A1n zero crossing near x=0.5. We...
Add to ORKG