Transverse structure of a proton in a light-front quark-diquark model

Tanmay Maji and Dipankar Chakrabarti
Phys. Rev. D 95, 074009 – Published 7 April 2017

Abstract

We present all the leading twist T-even transverse momentum dependent parton distributions (TMDs) in the light-front quark-diquark model (LFQDM) and study the relations among them. The model contains both the scalar and vector diquark with the light front wave functions modeled from the soft-wall AdS/QCD prediction. The xp2 factorization used in phenomenological extraction for TMDs is observed in this model. We present the results for the quark densities and the transverse shape of proton. The shape of the transversely polarized proton is shown to be nonspherical for nonzero transverse momentum. The scale evolution of both integrated and unintegrated TMDs are also presented in this paper.

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  • Received 15 February 2017

DOI:https://doi.org/10.1103/PhysRevD.95.074009

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsNuclear Physics

Authors & Affiliations

Tanmay Maji and Dipankar Chakrabarti

  • Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016, India

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Issue

Vol. 95, Iss. 7 — 1 April 2017

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