https://doi.org/10.1140/epja/i2011-11149-5
Regular Article - Theoretical Physics
Chiral extrapolation of nucleon wave function normalization constants
Universität Regensburg, Regensburg, Germany
* e-mail: philipp.wein@physik.uni-regensburg.de
Received:
24
August
2011
Revised:
24
August
2011
Accepted:
9
November
2011
Published online:
30
November
2011
Within the framework of two-flavor covariant baryon chiral perturbation theory we have expressed the Chernyak-Zhitnitsky, Ioffe and Dosch currents in terms of chiral fields to provide leading one-loop extrapolation formulae for the leading and next-to-leading twist normalization constants f N , λ1 and λ2. Finite-volume effects due to pion loops have been taken into account. The occurring low-energy constants are fitted to data obtained from recent lattice QCD simulations in order to extract the values at the physical point.
© SIF, Springer-Verlag Berlin Heidelberg, 2011
