Contraction diagram analysis in pion-kaon scattering

Contraction diagram analysis in pion-kaon scattering

We study the contributions from the connected and disconnected contraction diagrams to the pion-kaon scattering amplitude within the framework of SU(4|1) partially-quenched chiral perturbation theory. Combining this with a finite-volume analysis, we demonstrate that a lattice calculation of the easi...

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Main Authors: Chaitra Kalmahalli Guruswamy, Ulf-G. Meißner, Chien-Yeah Seng
Format: Article
Language:English
Published: Elsevier 2020-08-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321320301772
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spelling doaj-a4d7ee1c3bc74622a044fe9817cf80a02020-11-25T01:18:42ZengElsevierNuclear Physics B0550-32132020-08-01957115091Contraction diagram analysis in pion-kaon scatteringChaitra Kalmahalli Guruswamy0Ulf-G. Meißner1Chien-Yeah Seng2Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, GermanyHelmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany; Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany; Tbilisi State University, 0186 Tbilisi, GeorgiaHelmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany; Corresponding author.We study the contributions from the connected and disconnected contraction diagrams to the pion-kaon scattering amplitude within the framework of SU(4|1) 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.http://www.sciencedirect.com/science/article/pii/S0550321320301772
collection DOAJ
language English
format Article
sources DOAJ
author Chaitra Kalmahalli Guruswamy
Ulf-G. Meißner
Chien-Yeah Seng
spellingShingle Chaitra Kalmahalli Guruswamy
Ulf-G. Meißner
Chien-Yeah Seng
Contraction diagram analysis in pion-kaon scattering
Nuclear Physics B
author_facet Chaitra Kalmahalli Guruswamy
Ulf-G. Meißner
Chien-Yeah Seng
author_sort Chaitra Kalmahalli Guruswamy
title Contraction diagram analysis in pion-kaon scattering
title_short Contraction diagram analysis in pion-kaon scattering
title_full Contraction diagram analysis in pion-kaon scattering
title_fullStr Contraction diagram analysis in pion-kaon scattering
title_full_unstemmed Contraction diagram analysis in pion-kaon scattering
title_sort contraction diagram analysis in pion-kaon scattering
publisher Elsevier
series Nuclear Physics B
issn 0550-3213
publishDate 2020-08-01
description We study the contributions from the connected and disconnected contraction diagrams to the pion-kaon scattering amplitude within the framework of SU(4|1) 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.
url http://www.sciencedirect.com/science/article/pii/S0550321320301772
work_keys_str_mv AT chaitrakalmahalliguruswamy contractiondiagramanalysisinpionkaonscattering
AT ulfgmeißner contractiondiagramanalysisinpionkaonscattering
AT chienyeahseng contractiondiagramanalysisinpionkaonscattering
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