Differential cross sections and polarizations in elastic p-d scattering at medium energies

Bunker, S.N.; Cameron, J.M.; Carlson, R.F.; Richardson, J. Reginald; Tomaš, P.; Oers, W. T. H. van; Verba, J.W.

doi:10.1016/0375-9474(68)90418-1

Cited by 98 publications

(8 citation statements)

References 52 publications

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“…( 8), we take the experimental data from Refs. [23][24][25][26][27][28][29][30][31][32][33][34] with the Lagrange interpolation with respect to the scattering angle and energy. The kinematics of all the particles are treated relativistically.…”

Section: A Numerical Inputsmentioning

confidence: 99%

Proton induced deuteron knockout reaction as a probe of an isoscalar proton-neutron pair in nuclei

Chazono,

Yoshida,

Yoshida

et al. 2020

Preprint

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Background:The isoscalar pn pair is expected to emerge in nuclei having the similar proton and neutron numbers but there is no clear experimental evidence for it. Purpose: We aim to clarify the correspondence between the pn pairing strength in many-body calculation and the triple differential cross section (TDX) of proton-induced deuteron knockout (p, pd) reaction on 16 O. Methods: The radial wave function of the isoscalar pn pair with respect to the center of 16 O is calculated with the energy density functional (EDF) approach and is implemented in the distorted wave impulse approximation (DWIA) framework. The pn pairing strength V0 in the EDF calculation is varied and the corresponding change in the TDX is investigated. Results: A clear V0 dependence of the TDX is found for the 16 O(p, pd) 14 N(1 + 2 ) at 101.3 MeV. The nuclear distortion is found to make the V0 dependence stronger. Conclusions: Because of the clear V0-TDX correspondence, the (p, pd) reaction will be a promising probe for the isoscalar pn pair in nuclei. For quantitative discussion, further modification of the description of the reaction process will be necessary.

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Section: A Numerical Inputsmentioning

confidence: 99%

Proton induced deuteron knockout reaction as a probe of an isoscalar proton-neutron pair in nuclei

Chazono,

Yoshida,

Yoshida

et al. 2020

Preprint

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“…This means that we need to know the d + p elastic scattering cross sections at T p = 114.3 and 116.0 MeV, the equivalent laboratory proton beam energies. Bunker [47] has reviewed a number of early experiments [48][49][50][51] in addition to reporting their own measurements at 3 energies below 50 MeV. In particular, a widely spaced angular distribution is available at 93.6 MeV from Chamberlain and Stern [48].…”

Section: Reference Cross Sectionsmentioning

confidence: 99%

Measurement of the charge symmetry breaking d+d→He4+π0 reaction near threshold

et al. 2019

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We describe the observation of the isospin violating and charge symmetry breaking reaction dd → απ 0 just above threshold. Measurements using a magnetic channel (gated by two photons) of the 4 He scattering angle and momentum (from time of flight) permitted reconstruction of the π 0 "missing mass," the quantity used to separate distributions of 4 He + π 0 events from a continuum containing 4 He + γ + γ and 4 He + π 0 + γ events. A review has been completed of the apparatus, relevant GEANT simulations, various corrections, and the d + p scattering cross section used as a luminosity calibration. The new values of the total cross section for neutral pion production are 14.3 ± 2.2 (stat) ± 1.6 (sys) pb at 228.5 MeV and 17.3 ± 3.4 (stat) ± 2.4 (sys) pb at 231.8 MeV. The uncertainty remains dominated by statistical errors. These cross sections arise from the down-up quark mass difference and quark electromagnetic effects.

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“…In this section, we demonstrate a high efficiency of using a graphics processor in numerical solution of the above matrix equation for the three-body scattering problem. (deg) Figure 3: (Color online) The neutron vector analyzing power Ay for the elastic nd scattering at 35 MeV obtained within WP approach (solid line) compared to the result from [11] (dashed line) and the experimental pd data [17].…”

Section: Solution Of the Faddeev Matrix Equation Using Gpumentioning

confidence: 99%

New general approach in few-body scattering calculations: Solving discretized Faddeev equations on a graphics processing unit

2014

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Background: The numerical solution of few-body scattering problems with realistic interactions is a difficult problem that normally must be solved on powerful supercomputers, taking a lot of computer time. This strongly limits the possibility of accurate treatments for many important few-particle problems in different branches of quantum physics.Purpose: To develop a new general highly effective approach for the practical solution of few-body scattering equations that can be implemented on a graphics processing unit.Methods: The general approach is realized in three steps: (i) the reformulation of the scattering equations using a convenient analytical form for the channel resolvent operator; (ii) a complete few-body continuum discretization and projection of all operators and wave functions onto a L2 basis constructed from stationary wave packets and (iii) the ultra-fast solution of the resulting matrix equations using graphics processor. Results:The whole approach is illustrated by a calculation of the neutron-deuteron elastic scattering cross section below and above the three-body breakup threshold with a realistic N N potential which is performed on a standard PC using a graphics processor with an extremely short runtime. Conclusions:The general technique proposed in this paper opens a new way for a fast practical solution of quantum few-body scattering problems both in non-relativistic and relativistic formulations in hadronic, nuclear and atomic physics.

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Differential cross sections and polarizations in elastic p-d scattering at medium energies

Cited by 98 publications

References 52 publications

Proton induced deuteron knockout reaction as a probe of an isoscalar proton-neutron pair in nuclei

Proton induced deuteron knockout reaction as a probe of an isoscalar proton-neutron pair in nuclei

Measurement of the charge symmetry breaking d+d→He4+π0 reaction near threshold

New general approach in few-body scattering calculations: Solving discretized Faddeev equations on a graphics processing unit

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