# Measurements of $d_{2}^{n}$ and $A_{1}^{n}$: Probing the neutron spin structure

@article{Flay2016MeasurementsO, title={Measurements of \$d\_\{2\}^\{n\}\$ and \$A\_\{1\}^\{n\}\$: Probing the neutron spin structure}, author={David Flay and Matthew Posik and Diana S. Parno and Kalyan C. Allada and Whitney Armstrong and T. Averett and F. Benmokhtar and William Bertozzi and Alexandre Camsonne and M. Canan and Gordon D. Cates and C. Y. Chen and J-P. Chen and S. Choi and Eugene Chudakov and Francesco Cusanno and Mark Macrae Dalton and Wouter Deconinck and Cornelis de Jager and X. Deng and Alexandre Deur and C. Dutta and L. El Fassi and Gregg B. Franklin and Megan Friend and H. Gao and Franco Garibaldi and Shalev Gilad and Ronald Gilman and O. Glamazdin and Serkan Golge and J. A. Gomez and L . B. Guo and O. Hansen and Douglas W. Higinbotham and Timothy Kenneth Holmstrom and J. Huang and Charles Hyde and Hassan Ibrahim and X. S. Jiang and Ge Jin and Joseph M. Katich and Aidan Kelleher and Ameya Kolarkar and Wolfgang Korsch and Gerfried J. Kumbartzki and John J. Lerose and R. A. Lindgren and Nilanga K. Liyanage and E. Long and A. A. Lukhanin and V. H. Mamyan and Dustin E. McNulty and Zein-Eddine Meziani and Robert Michaels and Miha Mihovilovivc and B. Moffit and N. Muangma and Sirish Nanda and A. Narayan and Vladimir Nelyubin and Blaine E. Norum and Yoon Seok Oh and J. -C. Peng and Xin Qian and Yujie Qiang and Abdurahim Rakhman and S. Riordan and Arijit Saha and B. Sawatzky and Maryam Hashemi Shabestari and Albert Shahinyan and Simon vSirca and Patricia H. Solvignon and Rajesh Subedi and Vincent A. Sulkosky and Al Tobias and W. Troth and D. Wang and Y. Wang and Bogdan Wojtsekhowski and X. Yan and H. Yao and Yun-xiu Ye and Z. H. Ye and L. J. Yuan and X. Zhan and Y. Zhang and Y.-W. Zhang and B. Zhao and X. Zheng}, journal={Physical Review D}, year={2016}, volume={94}, pages={052003} }

We report on the results of the E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement of the twist-3 matrix element d_2 of the neutron (d^n_2) was conducted. The quantity dn_2 represents the average color Lorentz force a struck quark experiences in a deep inelastic electron scattering event off a neutron due to its interaction with the hadronizing remnants. This color force was determined from a linear combination of the third moments of the ^3He spin structure…

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## References

SHOWING 1-10 OF 302 REFERENCES

### Precision measurement of the neutron spin asymmetries and spin-dependent structure functions in the valence quark region

- Physics
- 2004

We report on measurements of the neutron spin asymmetries $A_{1,2}^n$ and polarized structure functions $g_{1,2}^n$ at three kinematics in the deep inelastic region, with $x=0.33$, 0.47 and 0.60 and…

### Precision measurement of the neutron twist-3 matrix element d(2)(n): probing color forces.

- PhysicsPhysical review letters
- 2014

The results are found to be in agreement with lattice QCD calculations and resolve the disagreement found with previous data at ⟨Q(2)⟩=5 GeV(2)/c(2), with an absolute precision of about 10(-5).

### E12-06-112: Measurement of neutron spin asymmetry An1 in the valence quark region using 8.8 GeV and 6.6 GeV beam energies and Bigbite spectrometer in Hall A

- Physics
- 2010

This document provides an update for experiment E12-06-122 [1]: a precision measurement of the virtual photon asymmetry A1 of the neutron in the Deep Inelastic Scattering (DIS) region (W 2 > 4 GeV)…

### Precision measurements of g 1 of the proton and of the deuteron with 6 GeV electrons

- Physics
- 2014

The inclusive polarized structure functions of the proton and deuteron, g(1)(p) and g(1)(d) , were measured with high statistical precision using polarized 6 GeV electrons incident on a polarized…

### The Spin Structure of the Nucleon

- Physics
- 1997

Attempting to understand the origin of the intrinsic spin of the proton and neutron has been an active area of both experimental and theoretical research for the past twenty years. With the…

### Single spin asymmetries in charged pion production from semi-inclusive deep inelastic scattering on a transversely polarized 3He Target at Q2 = 1.4-2.7 GeV2.

- PhysicsPhysical review letters
- 2011

The first measurement of target single spin asymmetries in the semi-inclusive (3)He(e,e'π(±))X reaction on a transversely polarized target is reported, which is largely consistent with the predictions of phenomenological fits and quark model calculations.

### Spin asymmetries A1 and structure functions g1 of the proton and the deuteron from polarized high energy muon scattering

- Physics
- 1998

We present the final results of the spin asymmetries A(1) and the spin structure functions g(1) of the proton and the deuteron in the kinematic range 0.0008 < x < 0.7 and 0.2 < Q(2) < 100 GeV2. For…