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Precision Measurement of the Neutron Spin Asymmetry A1n and Spin-Flavor Decomposition in the Valence Quark Region

Publication ,  Journal Article
Zheng, X; Aniol, K; Armstrong, DS; Averett, TD; Bertozzi, W; Binet, S; Burtin, E; Busato, E; Butuceanu, C; Calarco, J; Camsonne, A; Cates, GD ...
Published in: Physical Review Letters
January 9, 2004

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.

Duke Scholars

Published In

Physical Review Letters

ISSN

0031-9007

Publication Date

January 9, 2004

Volume

92

Issue

1

Start / End Page

120041 / 120045

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Zheng, X., Aniol, K., Armstrong, D. S., Averett, T. D., Bertozzi, W., Binet, S., … Zołnierczuk, P. A. (2004). Precision Measurement of the Neutron Spin Asymmetry A1n and Spin-Flavor Decomposition in the Valence Quark Region. Physical Review Letters, 92(1), 120041–120045.
Zheng, X., K. Aniol, D. S. Armstrong, T. D. Averett, W. Bertozzi, S. Binet, E. Burtin, et al. “Precision Measurement of the Neutron Spin Asymmetry A1n and Spin-Flavor Decomposition in the Valence Quark Region.” Physical Review Letters 92, no. 1 (January 9, 2004): 120041–45.
Zheng X, Aniol K, Armstrong DS, Averett TD, Bertozzi W, Binet S, et al. Precision Measurement of the Neutron Spin Asymmetry A1n and Spin-Flavor Decomposition in the Valence Quark Region. Physical Review Letters. 2004 Jan 9;92(1):120041–5.
Zheng, X., et al. “Precision Measurement of the Neutron Spin Asymmetry A1n and Spin-Flavor Decomposition in the Valence Quark Region.” Physical Review Letters, vol. 92, no. 1, Jan. 2004, pp. 120041–45.
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. Precision Measurement of the Neutron Spin Asymmetry A1n and Spin-Flavor Decomposition in the Valence Quark Region. Physical Review Letters. 2004 Jan 9;92(1):120041–120045.

Published In

Physical Review Letters

ISSN

0031-9007

Publication Date

January 9, 2004

Volume

92

Issue

1

Start / End Page

120041 / 120045

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences