TY  - JOUR
AU  - Kalmahalli Guruswamy, Chaitra
AU  - Meißner, Ulf-G.
AU  - Seng, Chien-Yeah
TI  - Contraction diagram analysis in pion-kaon scattering
JO  - Nuclear physics  / B
VL  - 957
SN  - 0550-3213
CY  - Amsterdam
PB  - North-Holland Publ. Co.
M1  - FZJ-2021-00163
SP  - 115091 -
PY  - 2020
AB  - We study the contributions from the connected and disconnected contraction diagrams to the pion-kaon scattering amplitude within the framework of SU partially-quenched chiral perturbation theory. Combining this with a finite-volume analysis, we demonstrate that a lattice calculation of the easier computable connected correlation functions is able to provide valuable information of the noisier disconnected correlation functions, and may serve as a theory guidance for the future refinement of the corresponding lattice techniques.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000554900600017
DO  - DOI:10.1016/j.nuclphysb.2020.115091
UR  - https://juser.fz-juelich.de/record/889258
ER  -