Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quark model predictions for the SU(6)-breaking ratio of the proton
  momentum distributions   The ratio between the anomalous magnetic moments of proton and neutron has
been recently parametrized by the ratio of proton momentum fractions
$M_{2}^{q_{val}}$. This ratio is evaluated using different constituent quark
models, starting from the CQM density distributions and calculating the next-to
leading order distributions. We show that this momentum fractions
$M_{2}^{q_{val}}$ ratio is a sensitive test for SU(6)-breaking effects and
therefore it is useful to distinguish among different CQMs. We investigate also
the possibility of getting constraints on the formulation of quark structure
models.

28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol