• Corpus ID: 251224195

GTMDs and the factorization of exclusive double Drell-Yan

@inproceedings{Echevarria2022GTMDsAT,
  title={GTMDs and the factorization of exclusive double Drell-Yan},
  author={Miguel G. Echevarria and Patricia A. Gutierrez Garcia and Ignazio Scimemi},
  year={2022}
}

• M. G. Echevarria, P. A. G. Garcia, I. Scimemi
• Published 29 July 2022
• Physics

Di ff erent exclusive processes have been proposed to access the generalized transverse momentum dependent distributions (GTMDs) with no proof of factorization, which allows to rigorously define the GTMDs. Here we obtain for the first time the factorization of the di ff erential cross section for the exclusive double Drell-Yan process π N → N (cid:48) γ ∗ γ ∗ → N (cid:48) ( (cid:96) + (cid:96) − )( (cid:96) + (cid:96) − ), for small transverse momenta of the photons in terms of a perturbatively calculable hard factor, GTMDs and light-cone wave functions (LCWFs). We find that the hard factor of the process can be obtained from single inclusive Drell-Yan production so that one can resum logarithms at high orders in QCD. We also discuss the evolution of the GTMDs and the LCWFs.