Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the eikonal approach to nuclear diffraction dissociation   The study of nuclear breakup of halo and weakly bound particles has been one
of the key ingredients in the understanding of exotic nuclei during the last
thirty years. One of the most used methods to analyse data, in particular
absolute breakup cross sections, has been the eikonal approximation. Here we
revise critically the formalisms used for calculating the diffraction
dissociation part of nuclear breakup and show that there is a formula that can
be applied to breakup on any target, while a most commonly used formula must be
restricted to light targets as it contains also the effect of Coulomb breakup
calculated to first order in the sudden approximation which is well known for
not being accurate.

33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat