Extraction of the distribution function h1T from experimental data

Christopher Lefky, Alexei Prokudin

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Abstract

We attempt an extraction of the pretzelosity distribution (h1T) from preliminary COMPASS, HERMES, and JLAB experimental data on sin(3φh-φS) asymmetry on proton, and effective deuteron and neutron targets. The resulting distributions, albeit with big errors, for the first time show tendency for up-quark pretzelosity to be positive and down-quark pretzelosity to be negative. A model relation of pretzelosity distribution and orbital angular momentum of quarks is used to estimate contributions of up and down quarks.

Original languageEnglish (US)
Article number034010
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number3
DOIs
Publication statusPublished - Dec 13 2015

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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