𝐽/𝜓 photoproduction and polarization in 𝑒 + 𝑝 collisions in the improved color evaporation model

Cheung, Vincent; Vogt, Ramona

doi:10.1103/PhysRevD.110.094026

𝐽/𝜓 photoproduction and polarization in 𝑒 + 𝑝 collisions in the improved color evaporation model

Journal Article · Wed Nov 13 00:00:00 EST 2024 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.110.094026· OSTI ID:2928810

^[1]; Vogt, Ramona ^[2]

Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); University of California, Davis, CA (United States)

We calculate the production and polarization of direct 𝐽/𝜓 in the improved color evaporation model in 𝑒 + 𝑝 photoproduction. We present the production as functions of transverse momentum, mass of the hadronic final state, and inelasticity. We also present the polarization parameters 𝜆_𝜗, 𝜆_𝜑, and 𝜆_𝜗⁢𝜑 in the helicity and the Collins-Soper frames, as well as the frame-invariant polarization parameter $$\tilde{𝜆}$$ as a function of transverse momentum and inelasticity. We find agreement with both 𝐽/𝜓 unpolarized cross sections and the invariant polarization parameters as a function of 𝑝𝑇.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: Nuclear Physics; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC52-07NA27344; SC0023547

OSTI ID:: 2928810

Alternate ID(s):: OSTI ID: 2477897

Report Number(s):: LLNL--JRNL-864888; e-print arXiv: https://arxiv.org/abs/2406.00070

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 9 Vol. 110; ISSN 2470-0010; ISSN 2470-0029

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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