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Precision measurements of A1n in the deep inelastic regime

Publication ,  Journal Article
Parno, DS; Flay, D; Posik, M; Allada, K; Armstrong, W; Averett, T; Benmokhtar, F; Bertozzi, W; Camsonne, A; Canan, M; Cates, GD; Chen, C ...
Published in: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
May 1, 2015

We 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 find no evidence of a transition to a positive slope in (δd+δd-)/(d+d-) up to x=0.548.

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Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

May 1, 2015

Volume

744

Start / End Page

309 / 314

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics
 

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Parno, D. S., Flay, D., Posik, M., Allada, K., Armstrong, W., Averett, T., … Zheng, X. (2015). Precision measurements of A1n in the deep inelastic regime. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 744, 309–314. https://doi.org/10.1016/j.physletb.2015.03.067
Parno, D. S., D. Flay, M. Posik, K. Allada, W. Armstrong, T. Averett, F. Benmokhtar, et al. “Precision measurements of A1n in the deep inelastic regime.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 744 (May 1, 2015): 309–14. https://doi.org/10.1016/j.physletb.2015.03.067.
Parno DS, Flay D, Posik M, Allada K, Armstrong W, Averett T, et al. Precision measurements of A1n in the deep inelastic regime. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2015 May 1;744:309–14.
Parno, D. S., et al. “Precision measurements of A1n in the deep inelastic regime.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 744, May 2015, pp. 309–14. Scopus, doi:10.1016/j.physletb.2015.03.067.
Parno DS, Flay D, Posik M, Allada K, Armstrong W, Averett T, Benmokhtar F, Bertozzi W, Camsonne A, Canan M, Cates GD, Chen C, Chen JP, Choi S, Chudakov E, Cusanno F, Dalton MM, Deconinck W, de Jager CW, Deng X, Deur A, Dutta C, El Fassi L, Franklin GB, Friend M, Gao H, Garibaldi F, Gilad S, Gilman R, Glamazdin O, Golge S, Gomez J, Guo L, Hansen O, Higinbotham DW, Holmstrom T, Huang J, Hyde C, Ibrahim HF, Jiang X, Jin G, Katich J, Kelleher A, Kolarkar A, Korsch W, Kumbartzki G, LeRose JJ, Lindgren R, Liyanage N, Long E, Lukhanin A, Mamyan V, McNulty D, Meziani ZE, Michaels R, Mihovilovič M, Moffit B, Muangma N, Nanda S, Narayan A, Nelyubin V, Norum B, Nuruzzaman N, Oh Y, Peng JC, Qian X, Qiang Y, Rakhman A, Riordan S, Saha A, Sawatzky B, Shabestari MH, Shahinyan A, Širca S, Solvignon P, Subedi R, Sulkosky V, Tobias WA, Troth W, Wang D, Wang Y, Wojtsekhowski B, Yan X, Yao H, Ye Y, Ye Z, Yuan L, Zhan X, Zhang Y, Zhang YW, Zhao B, Zheng X. Precision measurements of A1n in the deep inelastic regime. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2015 May 1;744:309–314.
Journal cover image

Published In

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

DOI

ISSN

0370-2693

Publication Date

May 1, 2015

Volume

744

Start / End Page

309 / 314

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics