Scholars@Duke publication: Precision measurements of A1n in the deep inelastic regime

Precision measurements of A1n in the deep inelastic regime

Journal articles - 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

Published version (DOI)

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.

Duke Scholars

Author Haiyan Gao Physics

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Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2015.03.067

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

Citation

APA

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NLM

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.

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2015.03.067

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