Reconciling Coulomb breakup and neutron radiative capture
نویسندگان
چکیده
منابع مشابه
Reconciling coulomb dissociation and radiative capture measurements.
We calculate the energy spectrum for 8B dissociation on a Pb target to all orders in the Coulomb and nuclear fields, and show that the slope of S17(E) obtained in previous analyses of Coulomb dissociation data is too steep, due to deficiencies in the conventional first-order analysis that was used. With a more complete theory that avoids the far-field approximation and includes E2, nuclear and ...
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The radiative neutron capture on lithium-7 is calculated model independently using a low energy halo effective field theory. The cross section is expressed in terms of scattering parameters directly related to the S-matrix element. The cross section depends on the poorly known p-wave effective range parameter r1. This constitutes the leading order uncertainty in traditional model calculations. ...
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We formulate scattering theory in the framework of a surface-integral approach utilizing analytically known asymptotic forms of the three-body wave functions. This formulation is valid for both short-range and Coulombic potentials. The post and prior forms of the breakup amplitude are derived without any reference to renormalization procedures.
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The total cross section for radiative neutron capture on a proton, np → dγ, is evaluated at big bang nucleosynthesis (BBN) energies. The electromagnetic transition amplitudes are calculated up to next-to leading order within the framework of pionless effective field theory with dibaryon fields. We also calculate the dγ → np cross section and the photon analyzing power for the d~γ → np process f...
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We calculate the cross-section for the thermal n+ p → d+ γ process in chiral perturbation theory to next-to-next-to-leading order using heavy-fermion formalism. The exchange current correction is found to be (4.5 ± 0.3) % in amplitude and the chiral perturbation at one-loop order gives the cross section σ th = (334 ± 2) mb which is in agreement with the experimental value (334.2 ± 0.5) mb. Toge...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2017
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.96.015801