Precision Measurement of the Neutron Spin Asymmetry A1 n and Spin-Flavor Decomposition in the Valence Quark Region

X. Zheng; K. Aniol; D. S. Armstrong; T. D. Averett; W. Bertozzi; S. Binet; E. Burtin; E. Busato; C. Butuceanu; J. Calarco; A. Camsonne; G. D. Cates; Z. Chai; J. P. Chen; Seonho Choi; E. Chudakov; F. Cusanno; R. De Leo; A. Deur; S. Dieterich; D. Dutta; J. M. Finn; S. Frullani; H. Gao; J. Gao; F. Garibaldi; S. Gilad; R. Gilman; J. Gomez; J. O. Hansen; D. W. Higinbotham; W. Hinton; T. Horn; C. W. De Jager; X. Jiang; L. Kaufman; J. Kelly; W. Korsch; K. Kramer; J. LeRose; D. Lhuillier; N. Liyanage; D. J. Margaziotis; F. Marie; P. Markowitz; K. McCormick; Z. E. Meziani; R. Michaels; B. Moffit; S. Nanda; D. Neyret; S. K. Phillips; A. Powell; T. Pussieux; B. Reitz; J. Roche; R. Roche; M. Roedelbronn; G. Ron; M. Rvachev; A. Saha; N. Savvinov; J. Singh; S. Širca; K. Slifer; P. Solvignon; P. Souder; D. J. Steiner; S. Strauch; V. Sulkosky; A. Tobias; G. Urciuoli; A. Vacheret; B. Wojtsekhowski; H. Xiang; Y. Xiao; F. Xiong; B. Zhang; L. Zhu; X. Zhu; P. A. Zołnierczuk

Precision Measurement of the Neutron Spin Asymmetry A₁ ⁿ and Spin-Flavor Decomposition in the Valence Quark Region

X. Zheng^*, K. Aniol, D. S. Armstrong, T. D. Averett, W. Bertozzi, S. Binet, E. Burtin, E. Busato, C. Butuceanu, J. Calarco, A. Camsonne, G. D. Cates, Z. Chai, J. P. Chen, Seonho Choi, E. Chudakov, F. Cusanno, R. De Leo, A. Deur, S. DieterichD. Dutta, J. M. Finn, S. Frullani, H. Gao, J. Gao, F. Garibaldi, S. Gilad, R. Gilman, J. Gomez, J. O. Hansen, D. W. Higinbotham, W. Hinton, T. Horn, C. W. De Jager, X. Jiang, L. Kaufman, J. Kelly, W. Korsch, K. Kramer, J. LeRose, D. Lhuillier, N. Liyanage, D. J. Margaziotis, F. Marie, P. Markowitz, K. McCormick, Z. E. Meziani, R. Michaels, B. Moffit, S. Nanda, D. Neyret, S. K. Phillips, A. Powell, T. Pussieux, B. Reitz, J. Roche, R. Roche, M. Roedelbronn, G. Ron, M. Rvachev, A. Saha, N. Savvinov, J. Singh, S. Širca, K. Slifer, P. Solvignon, P. Souder, D. J. Steiner, S. Strauch, V. Sulkosky, A. Tobias, G. Urciuoli, A. Vacheret, B. Wojtsekhowski, H. Xiang, Y. Xiao, F. Xiong, B. Zhang, L. Zhu, X. Zhu, P. A. Zołnierczuk

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

The neutron spin asymmetry A₁ⁿ with high precision at three kinematic in the deep inelastic region at x=0.33, 0.47 and Q ²=2.7, 3.5 and 4.8(GeV/c)², respectively was measured. It was shown that A₁ⁿ crosses zero around x=0.47 and becomes significantly positive at x=0.60. The polarized quark distributions, combined with the world proton data were also extracted. The hadron helicity conservation (HHC) mechanism, based on leading-order perturbative quantum chromodynamics (PQCD), where the quark orbital angular momentum (OAM) was assumed to be zero was discussed.

Original language	English
Article number	012004
Pages (from-to)	120041-120045
Number of pages	5
Journal	Physical Review Letters
Volume	92
Issue number	1
State	Published - 9 Jan 2004
Externally published	Yes

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Zheng, X., Aniol, K., Armstrong, D. S., Averett, T. D., Bertozzi, W., Binet, S., Burtin, E., Busato, E., Butuceanu, C., Calarco, J., Camsonne, A., Cates, G. D., Chai, Z., Chen, J. P., Choi, S., Chudakov, E., Cusanno, F., De Leo, R., Deur, A., ... Zołnierczuk, P. A. (2004). Precision Measurement of the Neutron Spin Asymmetry A₁ ⁿ and Spin-Flavor Decomposition in the Valence Quark Region. Physical Review Letters, 92(1), 120041-120045. Article 012004.

@article{8915fbdda4e84940b292b656c996dcf9,

title = "Precision Measurement of the Neutron Spin Asymmetry A1 n and Spin-Flavor Decomposition in the Valence Quark Region",

abstract = "The neutron spin asymmetry A1n with high precision at three kinematic in the deep inelastic region at x=0.33, 0.47 and Q 2=2.7, 3.5 and 4.8(GeV/c)2, respectively was measured. It was shown that A1n crosses zero around x=0.47 and becomes significantly positive at x=0.60. The polarized quark distributions, combined with the world proton data were also extracted. The hadron helicity conservation (HHC) mechanism, based on leading-order perturbative quantum chromodynamics (PQCD), where the quark orbital angular momentum (OAM) was assumed to be zero was discussed.",

author = "X. Zheng and K. Aniol and Armstrong, {D. S.} and Averett, {T. D.} and W. Bertozzi and S. Binet and E. Burtin and E. Busato and C. Butuceanu and J. Calarco and A. Camsonne and Cates, {G. D.} and Z. Chai and Chen, {J. P.} and Seonho Choi and E. Chudakov and F. Cusanno and {De Leo}, R. and A. Deur and S. Dieterich and D. Dutta and Finn, {J. M.} and S. Frullani and H. Gao and J. Gao and F. Garibaldi and S. Gilad and R. Gilman and J. Gomez and Hansen, {J. O.} and Higinbotham, {D. W.} and W. Hinton and T. Horn and {De Jager}, {C. W.} and X. Jiang and L. Kaufman and J. Kelly and W. Korsch and K. Kramer and J. LeRose and D. Lhuillier and N. Liyanage and Margaziotis, {D. J.} and F. Marie and P. Markowitz and K. McCormick and Meziani, {Z. E.} and R. Michaels and B. Moffit and S. Nanda and D. Neyret and Phillips, {S. K.} and A. Powell and T. Pussieux and B. Reitz and J. Roche and R. Roche and M. Roedelbronn and G. Ron and M. Rvachev and A. Saha and N. Savvinov and J. Singh and S. {\v S}irca and K. Slifer and P. Solvignon and P. Souder and Steiner, {D. J.} and S. Strauch and V. Sulkosky and A. Tobias and G. Urciuoli and A. Vacheret and B. Wojtsekhowski and H. Xiang and Y. Xiao and F. Xiong and B. Zhang and L. Zhu and X. Zhu and Zo{\l}nierczuk, {P. A.}",

year = "2004",

month = jan,

day = "9",

language = "אנגלית",

volume = "92",

pages = "120041--120045",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "1",

}

Zheng, X, Aniol, K, Armstrong, DS, Averett, TD, Bertozzi, W, Binet, S, Burtin, E, Busato, E, Butuceanu, C, Calarco, J, Camsonne, A, Cates, GD, Chai, Z, Chen, JP, Choi, S, Chudakov, E, Cusanno, F, De Leo, R, Deur, A, Dieterich, S, Dutta, D, Finn, JM, Frullani, S, Gao, H, Gao, J, Garibaldi, F, Gilad, S, Gilman, R, Gomez, J, Hansen, JO, Higinbotham, DW, Hinton, W, Horn, T, De Jager, CW, Jiang, X, Kaufman, L, Kelly, J, Korsch, W, Kramer, K, LeRose, J, Lhuillier, D, Liyanage, N, Margaziotis, DJ, Marie, F, Markowitz, P, McCormick, K, Meziani, ZE, Michaels, R, Moffit, B, Nanda, S, Neyret, D, Phillips, SK, Powell, A, Pussieux, T, Reitz, B, Roche, J, Roche, R, Roedelbronn, M, Ron, G, Rvachev, M, Saha, A, Savvinov, N, Singh, J, Širca, S, Slifer, K, Solvignon, P, Souder, P, Steiner, DJ, Strauch, S, Sulkosky, V, Tobias, A, Urciuoli, G, Vacheret, A, Wojtsekhowski, B, Xiang, H, Xiao, Y, Xiong, F, Zhang, B, Zhu, L, Zhu, X & Zołnierczuk, PA 2004, 'Precision Measurement of the Neutron Spin Asymmetry A₁ ⁿ and Spin-Flavor Decomposition in the Valence Quark Region', Physical Review Letters, vol. 92, no. 1, 012004, pp. 120041-120045.

TY - JOUR

T1 - Precision Measurement of the Neutron Spin Asymmetry A1 n and Spin-Flavor Decomposition in the Valence Quark Region

AU - Zheng, X.

AU - Aniol, K.

AU - Armstrong, D. S.

AU - Averett, T. D.

AU - Bertozzi, W.

AU - Binet, S.

AU - Burtin, E.

AU - Busato, E.

AU - Butuceanu, C.

AU - Calarco, J.

AU - Camsonne, A.

AU - Cates, G. D.

AU - Chai, Z.

AU - Chen, J. P.

AU - Choi, Seonho

AU - Chudakov, E.

AU - Cusanno, F.

AU - De Leo, R.

AU - Deur, A.

AU - Dieterich, S.

AU - Dutta, D.

AU - Finn, J. M.

AU - Frullani, S.

AU - Gao, H.

AU - Gao, J.

AU - Garibaldi, F.

AU - Gilad, S.

AU - Gilman, R.

AU - Gomez, J.

AU - Hansen, J. O.

AU - Higinbotham, D. W.

AU - Hinton, W.

AU - Horn, T.

AU - De Jager, C. W.

AU - Jiang, X.

AU - Kaufman, L.

AU - Kelly, J.

AU - Korsch, W.

AU - Kramer, K.

AU - LeRose, J.

AU - Lhuillier, D.

AU - Liyanage, N.

AU - Margaziotis, D. J.

AU - Marie, F.

AU - Markowitz, P.

AU - McCormick, K.

AU - Meziani, Z. E.

AU - Michaels, R.

AU - Moffit, B.

AU - Nanda, S.

AU - Neyret, D.

AU - Phillips, S. K.

AU - Powell, A.

AU - Pussieux, T.

AU - Reitz, B.

AU - Roche, J.

AU - Roche, R.

AU - Roedelbronn, M.

AU - Ron, G.

AU - Rvachev, M.

AU - Saha, A.

AU - Savvinov, N.

AU - Singh, J.

AU - Širca, S.

AU - Slifer, K.

AU - Solvignon, P.

AU - Souder, P.

AU - Steiner, D. J.

AU - Strauch, S.

AU - Sulkosky, V.

AU - Tobias, A.

AU - Urciuoli, G.

AU - Vacheret, A.

AU - Wojtsekhowski, B.

AU - Xiang, H.

AU - Xiao, Y.

AU - Xiong, F.

AU - Zhang, B.

AU - Zhu, L.

AU - Zhu, X.

AU - Zołnierczuk, P. A.

PY - 2004/1/9

Y1 - 2004/1/9

N2 - The neutron spin asymmetry A1n with high precision at three kinematic in the deep inelastic region at x=0.33, 0.47 and Q 2=2.7, 3.5 and 4.8(GeV/c)2, respectively was measured. It was shown that A1n crosses zero around x=0.47 and becomes significantly positive at x=0.60. The polarized quark distributions, combined with the world proton data were also extracted. The hadron helicity conservation (HHC) mechanism, based on leading-order perturbative quantum chromodynamics (PQCD), where the quark orbital angular momentum (OAM) was assumed to be zero was discussed.

AB - The neutron spin asymmetry A1n with high precision at three kinematic in the deep inelastic region at x=0.33, 0.47 and Q 2=2.7, 3.5 and 4.8(GeV/c)2, respectively was measured. It was shown that A1n crosses zero around x=0.47 and becomes significantly positive at x=0.60. The polarized quark distributions, combined with the world proton data were also extracted. The hadron helicity conservation (HHC) mechanism, based on leading-order perturbative quantum chromodynamics (PQCD), where the quark orbital angular momentum (OAM) was assumed to be zero was discussed.

UR - http://www.scopus.com/inward/record.url?scp=8844270301&partnerID=8YFLogxK

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:8844270301

SN - 0031-9007

VL - 92

SP - 120041

EP - 120045

JO - Physical Review Letters

JF - Physical Review Letters

IS - 1

M1 - 012004

ER -

Precision Measurement of the Neutron Spin Asymmetry A₁ ⁿ and Spin-Flavor Decomposition in the Valence Quark Region

Abstract

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