“School of Particles And Accelerator”

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Paper   IPM / Particles And Accelerator / 17487
School of Particles and Accelerator
  Title:   Impact of recent MINERvA measurement of the antineutrino-proton scattering cross section on the generalized parton distributions
1.  Fatemeh Irani
2.  Muhammad Goharipour
3.  Hadi Hashamipour
4.  K Azizi
  Status:   Published
  Journal: Phys. Rev. D
  No.:  074018
  Vol.:  108
  Year:  2023
  Pages:   14
  Supported by:  IPM
We investigate the impact of the new measurement of the antineutrino-proton scattering cross section from the MINERvA Collaboration on generalized parton distributions (GPDs), particularly the polarized GPDs denoted as H q. To achieve this, we perform some QCD analyses of the MINERvA data, in addition to all available data of the proton's axial form factors. We demonstrate that MINERvA data lead to consistent results with other related experimental data, confirming the universality of GPDs. Our results indicate that MINERvA data can impose new constraints on GPDs, particularly on H q. Our predictions for the proton's axial charge radius, WACS cross section, and axial form factor show good consistency with those of other studies and measurements. This leads us to conclude that the result of a more comprehensive analysis, considering all related experimental data, is not only reasonable but also more reliable, even in light of existing tensions among the data. The present study can be considered as a guideline for performing a new and comprehensive QCD global analysis of GPDs including the MINERvA measurements like that presented in Hashamipour et al. [Generalized parton distributions at zero skewness, Phys. Rev. D 107, 096005 (2023).].

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