Journal Article

PreJuSER-43325

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png How to extract the Lambda N scattering length from production reactions

Gasparyan, A.FZJ* ; Haidenbauer, J.FZJ* ; Hanhart, C.FZJ* ; Speth, J.FZJ*

2004
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/1688  doi:10.1103/PhysRevC.69.034006

Abstract: A dispersion integral is derived that allows one to relate directly (spin-dependent) LambdaN invariant mass spectra, measured in a large-momentum transfer reaction such as pp-->K(+)pLambda or gammad-->K(+)nLambda, to the scattering length for elastic LambdaN scattering. The involved systematic uncertainties are estimated and could be 0.3 fm or even smaller. This estimate is confirmed by comparing results of the proposed formalism with those of microscopic model calculations. We also show, for the specific reaction pp-->K(+)Lambdap, how polarization observables can be used to separate the two spin states of the LambdaN system.

Keyword(s): p p: inelastic scattering ; Lambda: hadroproduction ; photon deuteron: inelastic scattering ; Lambda: photoproduction ; nucleon Lambda: scattering length ; dispersion relation ; final-state interaction ; mass spectrum: (Lambda nucleon) ; polarization ; numerical calculations: interpretation of experiments ; p p --> Lambda p K+ ; photon deuteron --> Lambda n K+

Note: Record converted from VDB: 12.11.2012

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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 2004
Notes: This version is available at the following Publisher URL: http://prc.aps.org

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