Kaon-nucleon scattering lengths from kaonic deuterium experiments revisited

Döring, M.; Meißner, U.-G.

doi:10.1016/j.physletb.2011.09.099

Journal Article

PreJuSER-18902

Kaon-nucleon scattering lengths from kaonic deuterium experiments revisited

Döring, M.FZJ* ; Meißner, U.-G.FZJ*

2011
North-Holland Publ. Amsterdam

Physics letters / B 704, 663 - 666 (2011) [10.1016/j.physletb.2011.09.099]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10266 doi:10.1016/j.physletb.2011.09.099

Abstract: We analyse the impact of the recent measurement of kaonic hydrogen X rays by the SIDDHARTA collaboration on the allowed ranges for the kaon-deuteron scattering length in the framework of non-relativistic effective field theory. Based on data from (K) over barN scattering only, we predict the kaon-deuteron scattering length A(Kd) = (-1.46 + i1.08) fm, with an estimated uncertainty of about 25% in both the real and the imaginary part. (C) 2011 Elsevier B.V. All rights reserved.

Keyword(s): K nucleon: scattering length ; K deuteron: scattering length ; effective field theory: nonrelativistic ; isoscalar ; isovector ; effective Lagrangian: chiral ; atom: exotic ; ground state ; numerical calculations ; Exotic atoms (auto) ; Effective field theories (auto) ; Kaon-deuteron and kaon-nucleon (auto) ; scattering at low energies (auto) ; Chiral Lagrangians (auto)

Classification:

Physics, Multidisciplinary

Note: We thank Akaki Rusetsky for stimulating discussions. Partial financial support from the EU Integrated Infrastructure Initiative HadronPhysics2 (contract number 227431) and DFG (SFB/TR 16, "Subnuclear Structure of Matter") is gratefully acknowledged.; 8 pages, 4 figures; 8 pages, 4 figures

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