Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Quark Mass Dependence of Two Nucleon Observables   We study the implications of lattice QCD determinations of the S-wave
nucleon-nucleon scattering lengths at unphysical light quark masses. It is
found that with the help of nuclear effective field theory (NEFT), not only the
quark mass dependence of the effective range parameters, but also the leading
quark mass dependence of all the low energy deuteron matrix elements can be
obtained. The quark mass dependence of deuteron charge radius, magnetic moment,
polarizability and the deuteron photodisintegration cross section are shown
based on the NPLQCD lattice calculation of the scattering lengths at 354 MeV
pion mass and the NEFT power counting scheme of Beane, Kaplan and Vuorinen.
Further improvement can be obtained by performing the lattice calculation at
smaller quark masses. Our result can be used to constrain the time variation of
isoscalar combination of u and d quark mass m_q, to help the anthropic
principle study to find the m_q range which allows the existence of life, and
to provide a weak test of the multiverse conjecture.

13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys