کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5495540 | 1528794 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Emission of neutron-proton and proton-proton pairs in neutrino scattering
ترجمه فارسی عنوان
انتشار نوترون-پروتون و جفت پروتون-پروتون در پراکندگی نوترونی
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
چکیده انگلیسی
We use a recently developed model of relativistic meson-exchange currents to compute the neutron-proton and proton-proton yields in (νμ,μâ) scattering from 12C in the 2p-2h channel. We compute the response functions and cross sections with the relativistic Fermi gas model for different kinematics from intermediate to high momentum transfers. We find a large contribution of neutron-proton configurations in the initial state, as compared to proton-proton pairs. In the case of charge-changing neutrino scattering the 2p-2h cross section of proton-proton emission (i.e., np in the initial state) is much larger than for neutron-proton emission (i.e., two neutrons in the initial state) by a (Ï,q)-dependent factor. The different emission probabilities of distinct species of nucleon pairs are produced in our model only by meson-exchange currents, mainly by the Î isobar current. We also analyze other effects including exchange contributions and the effect of the axial and vector currents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 762, 10 November 2016, Pages 124-130
Journal: Physics Letters B - Volume 762, 10 November 2016, Pages 124-130
نویسندگان
I. Ruiz Simo, J.E. Amaro, M.B. Barbaro, A. De Pace, J.A. Caballero, G.D. Megias, T.W. Donnelly,