This title appears in the Scientific Report :
2012
Please use the identifier:
http://hdl.handle.net/2128/11093 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.85.015204 in citations.
Scattering lengths of strangeness S=−2 baryon-baryon interactions
Scattering lengths of strangeness S=−2 baryon-baryon interactions
We reconsider a method based on dispersion theory, that allows one to extract the scattering length of any two-baryon system from corresponding final-state interactions in production reactions. The application of the method to baryon-baryon systems with strangeness S=-2 and S=-3 systems is discussed...
Saved in:
Personal Name(s): | Gasparyan, A. (Corresponding author) |
---|---|
Haidenbauer, J. / Hanhart, C. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 Theorie der Starken Wechselwirkung; IAS-4 |
Published in: | Physical Review C Physical review / C, 85 85 (2012 2012) 1 1, S. 015204 015204 |
Imprint: |
Woodbury, NY
Inst.
2012
2012-01-20 2012-01-01 |
DOI: |
10.1103/PhysRevC.85.015204 |
Document Type: |
Journal Article |
Research Program: |
Hadron Structure and Dynamics (HSD) |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevC.85.015204 in citations.
We reconsider a method based on dispersion theory, that allows one to extract the scattering length of any two-baryon system from corresponding final-state interactions in production reactions. The application of the method to baryon-baryon systems with strangeness S=-2 and S=-3 systems is discussed. Theoretical uncertainties due to the presence of inelastic channels with near-by thresholds are examined for the specific situation of the reaction K^- d -> K^0 Lambda Lambda and the coupling of Lambda Lambda to the Xi N channel. The possibility to disentangle spin-triplet and spin-singlet scattering lengths by means of various polarization measurements is demonstrated for several production reactions in K^- d and gamma d scattering. Employing the method to available data on the Lambda Lambda invariant mass from the reaction ^{12}C(K^-,K^+ Lambda Lambda X), a 1S0 scattering length of a(Lambda Lambda)=-1.2\pm 0.6 fm is deduced. |