Electroproduction, photoproduction, and inverse electroproduction of pions in the first resonance region
نویسندگان
چکیده
منابع مشابه
Hard Exclusive Electroproduction of Pions ∗
We investigate the exclusive electroproduction of π mesons from nucleons. To leading twist, leading order αs accuracy the corresponding production amplitude can be decomposed into pseudovector and pseudoscalar parts. Both can be expressed in terms of quark double distribution functions of the nucleon. While the pseudovector contribution is connected to ordinary polarized quark distributions, th...
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We describe the double charge exchange (DCX) reaction of pions with different nuclear targets at incident kinetic energies of 120 − 180 MeV within the GiBUU transport framework. The DCX process is highly sensitive to details of the interactions of pions with the nuclear medium and, therefore, represents a major benchmark for any model of pion scattering off nuclei at low and intermediate energi...
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The cross section for the A(e, eγ)A reaction is calculated, investigating the contribution from the nuclear target with respect to the radiative corrections from the electron. The reaction mechanism is studied for photon emission in the ∆-resonance region, varying the scattering geometry and analyzing the most favourable kinematical conditions to extract information on the nuclear system. PACS ...
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The role played by orbital angular momentum Lz in parton models at P =m is delineated. By postulating similar behavior for parton wave functions of equal L z, we are able to relate the electroexcitation form factors of the low-lying resonances to the elastic form factors of the nucleon.
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A principal motivation for studying exclusive reactions is that they provide a new class of observables, called o -diagonal parton distributions, for the internal structure of the nucleon. The internal structure of the nucleon has been studied through inclusive scattering of high energy leptons in the deep inelastic scattering (DIS) limit. Polarized DIS measurements of g1(x;Q ), or the relevant...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2005
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.71.055205