Journal Article

PreJuSER-24141

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Isospin violation in charged pion-kaon scattering

Kubis, B.FZJ* ; Meissner, U. G.FZJ*

2002
North-Holland Publ. Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/10727  doi:10.1016/S0370-2693(02)01192-9

Abstract: l We evaluate the isospin breaking corrections to the scattering amplitude pi(-)K(+) --> pi(-)K(+) at threshold in the framework of chiral perturbation theory. This channel is of particular interest for the strong 2S-2P energy level shift in pion-kaon bound states, While a prediction of this level shift is hampered by a large uncertainty in the isoscalar scattering length, we find only a moderate uncertainty of about 3% in the electromagnetic corrections which are relevant for the extraction of the scattering lengths from experiment. (C) 2002 Elsevier Science B.V. All rights reserved.

Keyword(s): pi K: elastic scattering ; isospin: violation ; correction: electromagnetic ; perturbation theory: chiral ; pi K: scattering length ; numerical calculations ; pion-kaon scattering (auto) ; electromagnetic corrections (auto) ; chiral perturbation theory (auto)

Note: Record converted from VDB: 12.11.2012; 9 pp, 2 figs Report-no: FZJ-IKP(TH)-2001-24

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Contributing Institute(s):

1. Institut 3 (Theoretische Kernphysik) (IKP-TH)

Research Program(s):

1. Physik der Hadronen (M01)

Appears in the scientific report 2002

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