219 citations · 454 across the 10 of their papers we have counts for
10 papers
Relations between SU(2)- and SU(3)-LECs in chiral perturbation theory
Juerg Gasser, Christoph Haefeli, Mikhail A. Ivanov +1
Chiral perturbation theory in the two--flavour sector allows one to analyse Green functions in QCD in the limit where the strange quark mass is considered to be large in comparison…
Integrating out strange quarks in ChPT: terms at order p^6
Juerg Gasser, Christoph Haefeli, Mikhail A. Ivanov +1
Chiral perturbation theory in the two-flavour sector allows one to analyse Green functions in QCD in a limit where the strange quark mass is considered to be large in comparison to…
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…
Finite volume effects for the pion mass at two loops
Gilberto Colangelo, Christoph Haefeli
We evaluate the pion mass in finite volume to two loops within Chiral Perturbation Theory. The results are compared with a recently proposed extension of the asymptotic formula of…