TY - JOUR
T1 - Measurement of the 3He spin-structure functions and of neutron (3He) spin-dependent sum rules at 0.035 ≤ Q2 ≤ 0.24 GeV2
AU - Sulkosky, V.
AU - Singh, J. T.
AU - Peng, C.
AU - Chen, J. P.
AU - Deur, A.
AU - Abrahamyan, S.
AU - Aniol, K. A.
AU - Armstrong, D. S.
AU - Averett, T.
AU - Bailey, S. L.
AU - Beck, A.
AU - Bertin, P.
AU - Butaru, F.
AU - Boeglin, W.
AU - Camsonne, A.
AU - Cates, G. D.
AU - Chang, C. C.
AU - Choi, Seonho
AU - Chudakov, E.
AU - Coman, L.
AU - Cornejo, J. C.
AU - Craver, B.
AU - Cusanno, F.
AU - De Leo, R.
AU - de Jager, C. W.
AU - Denton, J. D.
AU - Dhamija, S.
AU - Feuerbach, R.
AU - Finn, J. M.
AU - Frullani, S.
AU - Fuoti, K.
AU - Gao, H.
AU - Garibaldi, F.
AU - Gayou, O.
AU - Gilman, R.
AU - Glamazdin, A.
AU - Glashausser, C.
AU - Gomez, J.
AU - Hansen, J. O.
AU - Hayes, D.
AU - Hersman, B.
AU - Higinbotham, D. W.
AU - Holmstrom, T.
AU - Humensky, T. B.
AU - Hyde, C. E.
AU - Ibrahim, H.
AU - Iodice, M.
AU - Jiang, X.
AU - Kaufman, L. J.
AU - Korsch, W.
N1 - Publisher Copyright:
© 2020 The Author(s)
PY - 2020/6/10
Y1 - 2020/6/10
N2 - The spin-structure functions g1 and g2, and the spin-dependent partial cross-section σTT have been extracted from the polarized cross-sections differences, Δσ∥(ν,Q2) and Δσ⊥(ν,Q2) measured for the He3→(e→,e′)X reaction, in the E97-110 experiment at Jefferson Lab. Polarized electrons with energies from 1.147 to 4.404 GeV were scattered at angles of 6∘ and 9∘ from a longitudinally or transversely polarized 3He target. The data cover the kinematic regions of the quasi-elastic, resonance production and beyond. From the extracted spin-structure functions, the first moments Γ1‾(Q2), Γ2(Q2) and ITT(Q2) are evaluated with high precision for the neutron in the Q2 range from 0.035 to 0.24GeV2. The comparison of the data and the chiral effective field theory predictions reveals the importance of proper treatment of the Δ degree of freedom for spin observables.
AB - The spin-structure functions g1 and g2, and the spin-dependent partial cross-section σTT have been extracted from the polarized cross-sections differences, Δσ∥(ν,Q2) and Δσ⊥(ν,Q2) measured for the He3→(e→,e′)X reaction, in the E97-110 experiment at Jefferson Lab. Polarized electrons with energies from 1.147 to 4.404 GeV were scattered at angles of 6∘ and 9∘ from a longitudinally or transversely polarized 3He target. The data cover the kinematic regions of the quasi-elastic, resonance production and beyond. From the extracted spin-structure functions, the first moments Γ1‾(Q2), Γ2(Q2) and ITT(Q2) are evaluated with high precision for the neutron in the Q2 range from 0.035 to 0.24GeV2. The comparison of the data and the chiral effective field theory predictions reveals the importance of proper treatment of the Δ degree of freedom for spin observables.
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U2 - 10.1016/j.physletb.2020.135428
DO - 10.1016/j.physletb.2020.135428
M3 - Article
AN - SCOPUS:85083864072
SN - 0370-2693
VL - 805
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 135428
ER -