Measurements of the proton and deuteron spin structure functions g1 and g2

K. Abe; T. Akagi; P. L. Anthony; R. Antonov; R. G. Arnold; T. Averett; H. R. Band; J. M. Bauer; H. Borel; P. E. Bosted; V. Breton; J. Button-Shafer; J. P. Chen; T. E. Chupp; J. Clendenin; C. Comptour; K. P. Coulter; G. Court; D. Crabb; M. Daoudi; D. Day; F. S. Dietrich; J. Dunne; H. Dutz; R. Erbacher; J. Fellbaum; A. Feltham; H. Fonvieille; E. Frlez; D. Garvey; R. Gearhart; J. Gomez; P. Grenier; K. A. Griffioen; S. Hoibraten; E. W. Hughes; C. Hyde-Wright; J. R. Johnson; D. Kawall; A. Klein; S. E. Kuhn; M. Kuriki; R. Lindgren; T. J. Liu; R. M. Lombard-Nelsen; J. Marroncle; T. Maruyama; X. K. Maruyama; J. McCarthy; W. Meyer; Z. E. Meziani; R. Minehart; J. Mitchell; J. Morgenstern; G. G. Petratos; R. Pitthan; D. Pocanic; C. Prescott; R. Prepost; P. Raines; B. Raue; D. Reyna; A. Rijllart; Y. Roblin; L. S. Rochester; S. E. Rock; O. A. Rondon; I. Sick; L. C. Smith; T. B. Smith; M. Spengos; F. Staley; P. Steiner; S. St. Lorant; L. M. Stuart; F. Suekane; Z. M. Szalata; H. Tang; Y. Terrien; T. Usher; D. Walz; F. Wesselmann; J. L. White; K. Witte; C. C. Young; B. Youngman; H. Yuta; G. Zapalac; B. Zihlmann; D. Zimmermann

doi:10.1103/PhysRevD.58.112003

Measurements of the proton and deuteron spin structure functions g₁ and g₂

K. Abe, T. Akagi, P. L. Anthony, R. Antonov, R. G. Arnold, T. Averett, H. R. Band, J. M. Bauer, H. Borel, P. E. Bosted, V. Breton, J. Button-Shafer, J. P. Chen, T. E. Chupp, J. Clendenin, C. Comptour, K. P. Coulter, G. Court, D. Crabb, M. DaoudiD. Day, F. S. Dietrich, J. Dunne, H. Dutz, R. Erbacher, J. Fellbaum, A. Feltham, H. Fonvieille, E. Frlez, D. Garvey, R. Gearhart, J. Gomez, P. Grenier, K. A. Griffioen, S. Hoibraten, E. W. Hughes, C. Hyde-Wright, J. R. Johnson, D. Kawall, A. Klein, S. E. Kuhn, M. Kuriki, R. Lindgren, T. J. Liu, R. M. Lombard-Nelsen, J. Marroncle, T. Maruyama, X. K. Maruyama, J. McCarthy, W. Meyer, Z. E. Meziani, R. Minehart, J. Mitchell, J. Morgenstern, G. G. Petratos, R. Pitthan, D. Pocanic, C. Prescott, R. Prepost, P. Raines, B. Raue, D. Reyna, A. Rijllart, Y. Roblin, L. S. Rochester, S. E. Rock, O. A. Rondon, I. Sick, L. C. Smith, T. B. Smith, M. Spengos, F. Staley, P. Steiner, S. St. Lorant, L. M. Stuart, F. Suekane, Z. M. Szalata, H. Tang, Y. Terrien, T. Usher, D. Walz, F. Wesselmann, J. L. White, K. Witte, C. C. Young, B. Youngman, H. Yuta, G. Zapalac, B. Zihlmann, D. Zimmermann

Research Center for Neutrino Science (RCNS)

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Abstract

Measurements are reported of the proton and deuteron spin structure functions g^p₁ and g^d₁ at beam energies of 29.1, 16.2, and 9.7 GeV, and g^p₂ and g^d₂ at a beam energy of 29.1 GeV. The integrals Γ_p = ∫¹₀g^p₁(x,Q²)dx and Γ_d = ∫¹₀g^d₁(x,Q²)dx were evaluated at fixed Q² = 3(GeV/c)² using the full data set to yield Γ_p = 0.132±0.003(stat)±0.009(syst) and Γ_d = 0.047±0.003±0.006. The Q² dependence of the ratio g₁/F₁ was studied and found to be small for Q² > 1 (GeV/c)². Within experimental precision the g₂ data are well described by the twist-2 contribution, g^WW₂. Twist-3 matrix elements were extracted and compared to theoretical predictions. The asymmetry A₂ was measured and found to be significantly smaller than the positivity limit √R for both proton and deuteron targets. A^p₂ is found to be positive and inconsistent with zero. Measurements of g₁ in the resonance region show strong variations with x and Q², consistent with resonant amplitudes exited from unpolarized data. These data allow us to study the Q² dependence of the integrals Γ_p and Γ_n below the scaling region.

Original language	English
Article number	112003
Pages (from-to)	1120031+11200354
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	58
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.58.112003
Publication status	Published - 1998 Dec 1

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Abe, K., Akagi, T., Anthony, P. L., Antonov, R., Arnold, R. G., Averett, T., Band, H. R., Bauer, J. M., Borel, H., Bosted, P. E., Breton, V., Button-Shafer, J., Chen, J. P., Chupp, T. E., Clendenin, J., Comptour, C., Coulter, K. P., Court, G., Crabb, D., ... Zimmermann, D. (1998). Measurements of the proton and deuteron spin structure functions g₁ and g₂. Physical Review D - Particles, Fields, Gravitation and Cosmology, 58(11), 1120031+11200354. [112003]. https://doi.org/10.1103/PhysRevD.58.112003

Abe, K, Akagi, T, Anthony, PL, Antonov, R, Arnold, RG, Averett, T, Band, HR, Bauer, JM, Borel, H, Bosted, PE, Breton, V, Button-Shafer, J, Chen, JP, Chupp, TE, Clendenin, J, Comptour, C, Coulter, KP, Court, G, Crabb, D, Daoudi, M, Day, D, Dietrich, FS, Dunne, J, Dutz, H, Erbacher, R, Fellbaum, J, Feltham, A, Fonvieille, H, Frlez, E, Garvey, D, Gearhart, R, Gomez, J, Grenier, P, Griffioen, KA, Hoibraten, S, Hughes, EW, Hyde-Wright, C, Johnson, JR, Kawall, D, Klein, A, Kuhn, SE, Kuriki, M, Lindgren, R, Liu, TJ, Lombard-Nelsen, RM, Marroncle, J, Maruyama, T, Maruyama, XK, McCarthy, J, Meyer, W, Meziani, ZE, Minehart, R, Mitchell, J, Morgenstern, J, Petratos, GG, Pitthan, R, Pocanic, D, Prescott, C, Prepost, R, Raines, P, Raue, B, Reyna, D, Rijllart, A, Roblin, Y, Rochester, LS, Rock, SE, Rondon, OA, Sick, I, Smith, LC, Smith, TB, Spengos, M, Staley, F, Steiner, P, St. Lorant, S, Stuart, LM, Suekane, F, Szalata, ZM, Tang, H, Terrien, Y, Usher, T, Walz, D, Wesselmann, F, White, JL, Witte, K, Young, CC, Youngman, B, Yuta, H, Zapalac, G, Zihlmann, B & Zimmermann, D 1998, 'Measurements of the proton and deuteron spin structure functions g₁ and g₂', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 58, no. 11, 112003, pp. 1120031+11200354. https://doi.org/10.1103/PhysRevD.58.112003

@article{b80b2cbe73a74586bcb41a5c4b0d0225,

title = "Measurements of the proton and deuteron spin structure functions g1 and g2",

abstract = "Measurements are reported of the proton and deuteron spin structure functions gp1 and gd1 at beam energies of 29.1, 16.2, and 9.7 GeV, and gp2 and gd2 at a beam energy of 29.1 GeV. The integrals Γp = ∫10gp1(x,Q2)dx and Γd = ∫10gd1(x,Q2)dx were evaluated at fixed Q2 = 3(GeV/c)2 using the full data set to yield Γp = 0.132±0.003(stat)±0.009(syst) and Γd = 0.047±0.003±0.006. The Q2 dependence of the ratio g1/F1 was studied and found to be small for Q2 > 1 (GeV/c)2. Within experimental precision the g2 data are well described by the twist-2 contribution, gWW2. Twist-3 matrix elements were extracted and compared to theoretical predictions. The asymmetry A2 was measured and found to be significantly smaller than the positivity limit √R for both proton and deuteron targets. Ap2 is found to be positive and inconsistent with zero. Measurements of g1 in the resonance region show strong variations with x and Q2, consistent with resonant amplitudes exited from unpolarized data. These data allow us to study the Q2 dependence of the integrals Γp and Γn below the scaling region.",

author = "K. Abe and T. Akagi and Anthony, {P. L.} and R. Antonov and Arnold, {R. G.} and T. Averett and Band, {H. R.} and Bauer, {J. M.} and H. Borel and Bosted, {P. E.} and V. Breton and J. Button-Shafer and Chen, {J. P.} and Chupp, {T. E.} and J. Clendenin and C. Comptour and Coulter, {K. P.} and G. Court and D. Crabb and M. Daoudi and D. Day and Dietrich, {F. S.} and J. Dunne and H. Dutz and R. Erbacher and J. Fellbaum and A. Feltham and H. Fonvieille and E. Frlez and D. Garvey and R. Gearhart and J. Gomez and P. Grenier and Griffioen, {K. A.} and S. Hoibraten and Hughes, {E. W.} and C. Hyde-Wright and Johnson, {J. R.} and D. Kawall and A. Klein and Kuhn, {S. E.} and M. Kuriki and R. Lindgren and Liu, {T. J.} and Lombard-Nelsen, {R. M.} and J. Marroncle and T. Maruyama and Maruyama, {X. K.} and J. McCarthy and W. Meyer and Meziani, {Z. E.} and R. Minehart and J. Mitchell and J. Morgenstern and Petratos, {G. G.} and R. Pitthan and D. Pocanic and C. Prescott and R. Prepost and P. Raines and B. Raue and D. Reyna and A. Rijllart and Y. Roblin and Rochester, {L. S.} and Rock, {S. E.} and Rondon, {O. A.} and I. Sick and Smith, {L. C.} and Smith, {T. B.} and M. Spengos and F. Staley and P. Steiner and {St. Lorant}, S. and Stuart, {L. M.} and F. Suekane and Szalata, {Z. M.} and H. Tang and Y. Terrien and T. Usher and D. Walz and F. Wesselmann and White, {J. L.} and K. Witte and Young, {C. C.} and B. Youngman and H. Yuta and G. Zapalac and B. Zihlmann and D. Zimmermann",

year = "1998",

month = dec,

day = "1",

doi = "10.1103/PhysRevD.58.112003",

language = "English",

volume = "58",

pages = "1120031+11200354",

journal = "Physical review D: Particles and fields",

issn = "0556-2821",

publisher = "American Institute of Physics",

number = "11",

}

TY - JOUR

T1 - Measurements of the proton and deuteron spin structure functions g1 and g2

AU - Abe, K.

AU - Akagi, T.

AU - Anthony, P. L.

AU - Antonov, R.

AU - Arnold, R. G.

AU - Averett, T.

AU - Band, H. R.

AU - Bauer, J. M.

AU - Borel, H.

AU - Bosted, P. E.

AU - Breton, V.

AU - Button-Shafer, J.

AU - Chen, J. P.

AU - Chupp, T. E.

AU - Clendenin, J.

AU - Comptour, C.

AU - Coulter, K. P.

AU - Court, G.

AU - Crabb, D.

AU - Daoudi, M.

AU - Day, D.

AU - Dietrich, F. S.

AU - Dunne, J.

AU - Dutz, H.

AU - Erbacher, R.

AU - Fellbaum, J.

AU - Feltham, A.

AU - Fonvieille, H.

AU - Frlez, E.

AU - Garvey, D.

AU - Gearhart, R.

AU - Gomez, J.

AU - Grenier, P.

AU - Griffioen, K. A.

AU - Hoibraten, S.

AU - Hughes, E. W.

AU - Hyde-Wright, C.

AU - Johnson, J. R.

AU - Kawall, D.

AU - Klein, A.

AU - Kuhn, S. E.

AU - Kuriki, M.

AU - Lindgren, R.

AU - Liu, T. J.

AU - Lombard-Nelsen, R. M.

AU - Marroncle, J.

AU - Maruyama, T.

AU - Maruyama, X. K.

AU - McCarthy, J.

AU - Meyer, W.

AU - Meziani, Z. E.

AU - Minehart, R.

AU - Mitchell, J.

AU - Morgenstern, J.

AU - Petratos, G. G.

AU - Pitthan, R.

AU - Pocanic, D.

AU - Prescott, C.

AU - Prepost, R.

AU - Raines, P.

AU - Raue, B.

AU - Reyna, D.

AU - Rijllart, A.

AU - Roblin, Y.

AU - Rochester, L. S.

AU - Rock, S. E.

AU - Rondon, O. A.

AU - Sick, I.

AU - Smith, L. C.

AU - Smith, T. B.

AU - Spengos, M.

AU - Staley, F.

AU - Steiner, P.

AU - St. Lorant, S.

AU - Stuart, L. M.

AU - Suekane, F.

AU - Szalata, Z. M.

AU - Tang, H.

AU - Terrien, Y.

AU - Usher, T.

AU - Walz, D.

AU - Wesselmann, F.

AU - White, J. L.

AU - Witte, K.

AU - Young, C. C.

AU - Youngman, B.

AU - Yuta, H.

AU - Zapalac, G.

AU - Zihlmann, B.

AU - Zimmermann, D.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - Measurements are reported of the proton and deuteron spin structure functions gp1 and gd1 at beam energies of 29.1, 16.2, and 9.7 GeV, and gp2 and gd2 at a beam energy of 29.1 GeV. The integrals Γp = ∫10gp1(x,Q2)dx and Γd = ∫10gd1(x,Q2)dx were evaluated at fixed Q2 = 3(GeV/c)2 using the full data set to yield Γp = 0.132±0.003(stat)±0.009(syst) and Γd = 0.047±0.003±0.006. The Q2 dependence of the ratio g1/F1 was studied and found to be small for Q2 > 1 (GeV/c)2. Within experimental precision the g2 data are well described by the twist-2 contribution, gWW2. Twist-3 matrix elements were extracted and compared to theoretical predictions. The asymmetry A2 was measured and found to be significantly smaller than the positivity limit √R for both proton and deuteron targets. Ap2 is found to be positive and inconsistent with zero. Measurements of g1 in the resonance region show strong variations with x and Q2, consistent with resonant amplitudes exited from unpolarized data. These data allow us to study the Q2 dependence of the integrals Γp and Γn below the scaling region.

AB - Measurements are reported of the proton and deuteron spin structure functions gp1 and gd1 at beam energies of 29.1, 16.2, and 9.7 GeV, and gp2 and gd2 at a beam energy of 29.1 GeV. The integrals Γp = ∫10gp1(x,Q2)dx and Γd = ∫10gd1(x,Q2)dx were evaluated at fixed Q2 = 3(GeV/c)2 using the full data set to yield Γp = 0.132±0.003(stat)±0.009(syst) and Γd = 0.047±0.003±0.006. The Q2 dependence of the ratio g1/F1 was studied and found to be small for Q2 > 1 (GeV/c)2. Within experimental precision the g2 data are well described by the twist-2 contribution, gWW2. Twist-3 matrix elements were extracted and compared to theoretical predictions. The asymmetry A2 was measured and found to be significantly smaller than the positivity limit √R for both proton and deuteron targets. Ap2 is found to be positive and inconsistent with zero. Measurements of g1 in the resonance region show strong variations with x and Q2, consistent with resonant amplitudes exited from unpolarized data. These data allow us to study the Q2 dependence of the integrals Γp and Γn below the scaling region.

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U2 - 10.1103/PhysRevD.58.112003

DO - 10.1103/PhysRevD.58.112003

M3 - Article

AN - SCOPUS:0542445127

SN - 0556-2821

VL - 58

SP - 1120031+11200354

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

IS - 11

M1 - 112003

ER -

Measurements of the proton and deuteron spin structure functions g₁ and g₂

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