<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math>Evolution of the Neutron Spin Structure Moments using a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">H</mml:mi><mml:mi mathvariant="normal">e</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mn>3</mml:mn></mml:mmultiscripts></mml:math>Target

Amarian, M.; Auerbach, L.; Averett, T.; Berthot, J.; Bertin, P.Y.; Bertozzi, B.; Black, T.; Brash, E. J.; Brown, D. S.; Burtin, E.; Calarco, J. R.; Cates, G. D.; Chai, Z.; Chen, J. P.; Choi, S.; Chudakov, E.; Cisbani, E.; Jager, C. W. de; Deur, A.; DiSalvo, R.; Dieterich, Sonja; Djawotho, P.; Finn, Michael R.; Fissum, Kevin; Fonvieille, H.; Frullani, S.; H, Gao; Gao, J.; Garibaldi, F.; Gasparian, A.; Gilad, S.; Gilman, R.; Glamazdin, A.; Glashausser, C.; Goldberg, Eugene P.; Gómez, J.; Gorbenko, V.; Hansen, J. O.; Hersman, B.; Holmes, R.; Huber, G. M.; Hughes, E. W.; Humensky, Brian; Incerti, S.; Iodice, M.; Jensen, Svend J. Knak; Jiang, X.; Jones, C. E.; Jones, G.; Jones, M.; Jutier, C.; Ketikyan, A.; Kominis, I. K.; Korsch, W.; Kramer, K.; Kumar, Krishna; Kumbartzki, G.; Kuss, M.; Lakuriqi, E.; Laveissière, G.; LeRose, J.; Liang, M.; Liyanage, N.; Lolos, G. J.; Malov, S.; Marroncle, J.; McCormick, K.; McKeown, R. D.; Meziani, Z. E.; Michaels, R.; Mitchell, J.; Papandreou, Z.; Pavlin, Tina; Petratos, G. G.; Pripstein, D.; Prout, D. L.; Ransome, R. D.; Roblin, Y.; Rowntree, D.; Rvachev, M.; Sabatié, F.; Saha, A.; Slifer, K.; Souder, P. A.; Saito, T.; Strauch, S.; Suleiman, R.; Takahashi, Kazunori; Teijiro, S.; Todor, L.; Tsubota, H.; Ueno, Hiroaki; Urciuoli, G. M.; Meer, Robert van der; Vernin, P.; Voskanian, H.; Wojtsekhowski, B.; Xiong, Feng; Xü, Wei-Jiang; Yang, J. C.; Zhang, B.; Zolnierczuk, Piotr

doi:10.1103/physrevlett.92.022301

Cited by 78 publications

(49 citation statements)

References 46 publications

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“…A comparable data set to the one presented here, covering a wide kinematic range, was collected for the neutron, using polarized 3 He as an effective neutron target and the spectrometers in Jefferson Laboratory's Hall A [20,21]. A more restricted data set on the proton and deuteron at an average Q 2 of 1.3 GeV 2 , covering the resonance region with both transversely and longitudinally polarized targets, was acquired in Jefferson Lab's Hall C [22].…”

Section: Introductionmentioning

confidence: 99%

Determination of the proton spin structure functions for 0.05<Q2<5GeV2 using CLAS

Fersch¹,

Guler²,

Bosted³

et al. 2017

Phys. Rev. C

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We present the results of our final analysis of the full data set of g p 1 (Q 2 ), the spin structure function of the proton, collected using CLAS at Jefferson Laboratory in [2000][2001] We compare our final results with various theoretical models and expectations, as well as with parametrizations of the world data. Our data, with their precision and dense kinematic coverage, are able to constrain fits of polarized parton distributions, test pQCD predictions for quark polarizations at large x, offer a better understanding of quark-hadron duality, and provide more precise values of higher twist matrix elements in the framework of the operator product expansion.

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Section: Introductionmentioning

confidence: 99%

Determination of the proton spin structure functions for 0.05<Q2<5GeV2 using CLAS

Fersch¹,

Guler²,

Bosted³

et al. 2017

Phys. Rev. C

Self Cite

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show abstract

“…Optical pumping is typically performed with ≈90 W of laser light from three fiber-coupled diode laser systems. The typical 3 He polarization achieved was 30% to 40% in the first experiments on electromagnetic form factors (Xiong et al , 2001; Xu et al , 2000) and neutron spin structure functions (Amarian et al , 2004, 2002; Zheng et al , 2004a,b). With the use of hybrid SEOP, the 3 He polarization was increased to ~45% for a more recent measurement of the neutron’s electric form factor (Riordan et al , 2010).…”

Section: Charged Particle and Photon Scattering Targetsmentioning

confidence: 99%

Optically polarizedHe3

et al. 2017

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This article reviews the physics and technology of producing large quantities of highly spin-polarized 3He nuclei using spin-exchange (SEOP) and metastability-exchange (MEOP) optical pumping. Both technical developments and deeper understanding of the physical processes involved have led to substantial improvements in the capabilities of both methods. For SEOP, the use of spectrally narrowed lasers and K-Rb mixtures has substantially increased the achievable polarization and polarizing rate. For MEOP nearly lossless compression allows for rapid production of polarized 3He and operation in high magnetic fields has likewise significantly increased the pressure at which this method can be performed, and revealed new phenomena. Both methods have benefitted from development of storage methods that allow for spin-relaxation times of hundreds of hours, and specialized precision methods for polarimetry. SEOP and MEOP are now widely applied for spin-polarized targets, neutron spin filters, magnetic resonance imaging, and precision measurements.

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“…Eq. 2 is predicted to vanish according to the Burkhardt-Cottingham (BC) sum rule [1], and was studied by the E155 collaboration [2], as well as the RSS [3] and E94-010 [4] collaborations. The BC sum rule rests on a similar theoretical foundation as the more famous Bjorken and GDH sum rules so a violation -as suggested by the E155 data -would pose a serious challenge to well established theory.…”

Section: Spin Structure Function Momentsmentioning

confidence: 99%