Sivers and Boer-Mulders TMDs of the proton in a light-front quark-diquark model

Gurjar, Bheemsehan; Chakrabarti, Dipankar; Mondal, Chandan

doi:10.1103/physrevd.106.114027

Cited by 3 publications

(2 citation statements)

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“…The nonperturbative gluon rescattering kernel derived in Ref. [52] has been successfully employed to compute T-odd TMDs of the pion [52,69] and the proton [39].…”

Section: Pion Tmdsmentioning

confidence: 99%

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Polarized gluon distribution in the proton from holographic light-front QCD

2023

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We compute the sin(2ϕ − ϕs) azimuthal asymmetry in the pion-nucleon induced Drell-Yan process within transverse momentum dependent factorization. We employ the holographic light-front pion wave functions to calculate its leading-twist transverse momentum dependent parton distributions (TMDs). The Boer-Mulders TMD of the pion is then convoluted with the transversity TMD of the proton evaluated in a light-front quark-diquark model constructed with the wave functions predicted by the soft-wall AdS/QCD to obtain the azimuthal asymmetry in the Drell-Yan process. The gluon rescattering is pivotal to predict nonzero pion Boer-Mulders TMD. We investigate the utility of a nonperturbative SU(3) gluon rescattering kernel going beyond the usual approximation of perturbative U(1) gluons. The holographic light-front QCD approach provides a powerful tool for exploring the role of nonperturbative QCD effects in the Drell-Yan process and may help to guide future experimental measurements.

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“…The nonperturbative gluon rescattering kernel derived in Ref. [52] has been successfully employed to compute T-odd TMDs of the pion [52,69] and the proton [39].…”

Section: Pion Tmdsmentioning

confidence: 99%

“…[30], Gamberg and Schlegel have made a major attempt to overcome this perturbative approximation inside the antiquark spectator framework. The nonperturbative SU(3) gluon rescattering kernel has been further employed to compute the nonzero Boer-Mulders TMD of the pion [52] and both the Sivers and the Boer-Mulders TMDs of the proton [39].…”

Section: Introductionmentioning

confidence: 99%