Densities, Parton Distributions, and Measuring the Non-Spherical Shape of the Nucleon

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dc.creatorMiller, Gerald A.
dc.date2007-08-16
dc.date.accessioned2026-07-07T11:41:54Z
dc.date.available2026-07-07T11:41:54Z
dc.descriptionSpin-dependent quark densities, matrix elements of specific density operators in proton states of definite spin-polarization, indicate that the nucleon may harbor an infinite variety of non-spherical shapes. We show that these matrix elements are closely related to specific transverse momentum dependent parton distributions accessible in the angular dependence of the semi-inclusive processes electron plus proton goes to electron plus pion plus anything, and the Drell-Yan reaction proton plus proton goes to a lepton anti-lepton pair plus anything. New measurements or analyses would allow the direct exhibition of the non-spherical nature of the proton.
dc.description7 pages, two figures
dc.identifierhttps://arxiv.org/abs/0708.2297
dc.identifierhttp://arxiv.org/abs/0708.2297
dc.identifierPhys.Rev.C76:065209,2007
dc.identifierdoi:10.1103/PhysRevC.76.065209
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200700
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Experiment
dc.titleDensities, Parton Distributions, and Measuring the Non-Spherical Shape of the Nucleon
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