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

Alberg, Mary; Miller, Gerald A.

doi:10.1103/PhysRevC.110.L042201

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

Journal Article · 04 October 2024 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.110.L042201 · OSTI ID:2455057

^[1];

^[2]

Seattle University, WA (United States); University of Washington, Seattle, WA (United States)
University of Washington, Seattle, WA (United States)

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, 𝜁_𝐻, 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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Research Organization:: Temple University-Of The Commonwealth System Of Higher Education, Philadelphia, PA (United States)

Sponsoring Organization:: U.S. National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG02-97ER41014; SC0023646

OSTI ID:: 2455057

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 110; ISSN 2469-9985; ISSN 2469-9993

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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