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  • Letter
  • Open Access

Quark counting, Drell-Yan West, and the pion wave function

Mary Alberg1,2 and Gerald A. Miller2

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Phys. Rev. C 110, L042201 – Published 4 October, 2024

DOI: https://doi.org/10.1103/PhysRevC.110.L042201

Abstract

The relation between the pion's quark distribution function, q(x), its light-front wave function, and the elastic charge form factor, F(Δ2), is explored. The square of the leading-twist pion wave function at a special probe scale, ζH, is determined using models and Poincaré covariance from realistic results for q(x). This wave function is then used to compute form factors with the result that the Drell-Yan-West and quark counting relationships are not satisfied. A new relationship between q(x) and F(Δ2) is proposed.

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Phys. Rev. C 110, L042201– Published 4 October, 2024
  • Received 18 March 2024
  • Accepted 19 September 2024
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

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