Journal Article

PreJuSER-8630

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png A method to measure the antkaon-nucleon scattering length in lattice QCD

Lage, M. ; Meissner, U. G.FZJ* ; Rusetsky, A.

2009
North-Holland Publ. Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/10368  doi:10.1016/j.physletb.2009.10.055

Abstract: We propose a method to determine the isoscalar (K) over barN scattering length on the lattice. Our method represents the generalization of Luscher's approach in the presence of inelastic channels (complex scattering length). In addition, the proposed approach allows one to find the position of the S-matrix pole corresponding the Lambda(1405) resonance. (C) 2009 Elsevier B.V. All rights reserved.

Keyword(s): S-matrix: pole ; anti-K nucleon: interaction: scattering length ; quantum chromodynamics: lattice ; Lambda(1405) ; coupled channel ; isoscalar ; effective field theory: nonrelativistic ; Lippmann-Schwinger equation

Note: Work supported in part by DFG (SFB/TR 16, "Subnuclear Structure of Matter") and by the Helmholtz Association through funds provided to the virtual institute "Spin and strong QCD" (VH-VI-231). We also acknowledge the support of the European Community-Research Infrastructure Integrating Activity "Study of Strongly Interacting Matter" (acronym HadronPhysics2, grant Agreement No. 227431) under the Seventh Framework Programme of ELL A.R. acknowledges financial support of the Georgia National Science Foundation (grant #GNSF/ST08/4-401).

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Contributing Institute(s):

1. Theoretische Kernphysik (IKP-3)

Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2009

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