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Statistical description of the proton spin with a large gluon helicity distribution

Abstract : The quantum statistical parton distributions approach proposed more than one decade ago is revisited by considering a larger set of recent and accurate Deep Inelastic Scattering (DIS) experimental results. It enables us to improve the description of the data by means of a new determination of the parton distributions. We will see that a large gluon polarization emerges, giving a significant contribution to the proton spin.
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Submitted on : Thursday, November 19, 2015 - 12:43:45 PM
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Claude Bourrely, Jacques Soffer. Statistical description of the proton spin with a large gluon helicity distribution. Physics Letters B, Elsevier, 2015, 740, pp.168-171. ⟨10.1016/j.physletb.2014.11.044⟩. ⟨hal-01230963⟩

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