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      First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron

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      Physical Review Letters
      American Physical Society (APS)

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          Abstract

          Measuring deeply virtual Compton scattering (DVCS) on the neutron is one of the necessary steps to understand the structure of the nucleon in terms of generalized parton distributions (GPDs). Neutron targets play a complementary role to transversely polarized proton targets in the determination of the GPD E . This poorly known and poorly constrained GPD is essential to obtain the contribution of the quarks’ angular momentum to the spin of the nucleon. DVCS on the neutron was measured for the first time selecting the exclusive final state by detecting the neutron, using the Jefferson Lab longitudinally polarized electron beam, with energies up to 10.6 GeV, and the CLAS12 detector. The extracted beam-spin asymmetries, combined with DVCS observables measured on the proton, allow a clean quark-flavor separation of the imaginary parts of the Compton form factors H and E .

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          A measurement of the spin asymmetry and determination of the structure function g1 in deep inelastic muon-proton scattering

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            Deeply virtual Compton scattering

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              Nonforward parton distributions

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                Author and article information

                Contributors
                Journal
                PRLTAO
                Physical Review Letters
                Phys. Rev. Lett.
                American Physical Society (APS)
                0031-9007
                1079-7114
                November 2024
                November 20 2024
                : 133
                : 21
                Article
                10.1103/PhysRevLett.133.211903
                cf66dc2f-1fd6-440f-a4c1-f18e91cbc638
                © 2024

                https://creativecommons.org/licenses/by/4.0/

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