Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-local interactions in the $(d,p)$ surrogate method for $(n,\gamma)$
  reactions   Single-neutron transfer reactions populating states in the continuum are
interesting both for structure and astrophysics. In their description often
global optical potentials are used for the nucleon-target interactions, and
these interactions are typically local. In our work, we study the effects of
nonlocality in $(d,p)$ reactions populating continuum states. This work is
similar to that of [1] but now for transfer to the continuum. A theory for
computing cross sections for inclusive processes $A (d,p) X$ was explored in
[2]. Therein, local optical potentials were used to describe the nucleon-target
effective interaction. The goal of the present work is to extend the theory
developed in [2] to investigate the effects of including nonlocality in the
effective interaction on the relevant reaction observables. We implement the
R--matrix method to solve the non--local equations both for the nucleon
wavefunctions and the propagator. We then apply the method to systematically
study the inclusive process of $(d,p)$ on $^{16}$O, $^{40}$Ca, $^{48}$Ca and
$^{208}$Pb at 10, 20 and 50 MeV. We compare the results obtained when
non--local interactions are used with those obtained when local equivalent
interactions are included. We find that nonlocality affects different pieces of
the model in complex ways. Depending on the beam energy and the target, the
non-elastic breakup can either increase or decrease. While the non-elastic
transfer cross section for each final spin state can change considerably, the
main prediction of the model [2], namely the shape of the spin distributions,
remains largely unaltered by nonlocality.
  [1] L. J. Titus and F. M. Nunes. Testing the Perey effect. Phys. Rev. C,
89:034609, Mar 2014.
  [2] G. Potel, F. M. Nunes, and I. J. Thompson. Establishing a theory for
deuteron-induced surrogate reactions. Phys. Rev. C, 92:034611, Sep 2015.

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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: math
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The categories of this paper are: quant-ph
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
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The categories of this paper are: plasm-ph
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: cs
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph