This title appears in the Scientific Report : 2013 

Varying the light quark mass: Impact on the nuclear force and big bang nucleosynthesis
Berengut, J. C. (Corresponding author)
Epelbaum, E. / Flambaum, V. V. / Hanhart, C. / Meißner, Ulf-G. / Nebreda, J. / Peláez, J. R.
Theorie der Starken Wechselwirkung; IAS-4
Theorie der starken Wechselwirkung; IKP-3
Physical Review D Physical review / D, 87 87 (2013 2013) 8 8, S. 085018 085018
[S.l.] Soc. 2013
Journal Article
Hadron Structure and Dynamics (HSD)
Please use the identifier: in citations.
Please use the identifier: in citations.
The quark mass dependences of light element binding energies and nuclear scattering lengths are derived using chiral perturbation theory in combination with non-perturbative methods. In particular, we present new, improved values for the quark mass dependence of meson resonances that enter the nuclear force. A detailed analysis of the theoretical uncertainties arising in this determination is presented. As an application we derive from a comparison of observed and calculated primordial deuterium and helium abundances a stringent limit on the variation of the light quark mass, $\delta m_q/m_q = 0.02 \pm 0.04$. Inclusion of the neutron lifetime modification under the assumption of a variation of the Higgs vacuum expectation value that translates into changing quark, electron, and weak gauge boson masses, leads to a stronger limit, $|\delta m_q/m_q| < 0.009$.