57 citations · 144 across the 7 of their papers we have counts for
3 papers · 1 filter
Electromagnetic low-energy constants in ChPT
Christoph Haefeli, Mikhail A. Ivanov, Martin Schmid
We investigate three-flavour chiral perturbation theory including virtual photons in a limit where the strange quark mass is much larger than the external momenta and the up and do…
Integrating out strange quarks in ChPT
Jurg Gasser, Christoph Haefeli, Mikhail A. Ivanov +1
We study three flavour chiral perturbation theory in a limit where the strange quark mass is much larger than the external momenta and the up and down quark masses, and where the e…
On the mesonic Lagrangian of order p^6 in chiral SU(2)
Christoph Haefeli, Mikhail A. Ivanov, Martin Schmid +1
We show that the number of operators in the presently known mesonic chiral Lagrangian of order p^6 in the two-flavour sector can be reduced by at least one from 57 to 56 by providi…