Probing pretzelosity $h_{1T}^{\perp }$ via the polarized proton-antiproton Drell-Yan process

Abstract

We show that the polarized proton-antiproton Drell-Yan process is ideal to probe the pretzelosity distribution ($h_{1T}^{\perp }$), which is one of the new transverse-momentum-dependent parton distributions of the nucleon. We present predictions of the $\cos (2\varphi +{\varphi }_a-{\varphi }_b)$ asymmetry in the transversely polarized proton-antiproton Drell-Yan process at PAX kinematics and find that the results are significantly larger compared with those of the $\sin (3{\varphi }_h-{\varphi }_S)$ asymmetry in the semi-inclusive deep inelastic scattering process at HERMES, COMPASS, and JLab kinematics. We conclude that the $\cos (2\varphi +{\varphi }_a-{\varphi }_b)$ asymmetry in the PAX experiment can probe the new physical quantity of the pretzelosity distribution.

5 pages, 3 figures, final version in journal publication

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Cited by in corpus (9)

• Quark Wigner distributions in a light-cone spectator model
• Generalized universality of higher transverse moments of quark transverse momentum dependent correlators
• Azimuthal asymmetries in lepton-pair production at a fixed-target experiment using the LHC beams (AFTER)
• Azimuthal asymmetries in single polarized proton-proton Drell-Yan processes
• Generalized form factors of the nucleon in a light-cone spectator-diquark model
• Quark helicity distributions in transverse momentum space and transverse coordinate space
• Three-dimensional parton distribution functions $g_{1T}$ and $h_{1L}^{\perp }$ in the polarized proton-antiproton Drell-Yan process
• Three dimensional imaging of the nucleon --- TMD (theory and phenomenology)
• Six-dimensional light-front Wigner distributions of the proton