Journal Article

PreJuSER-8528

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The Role of nucleon recoil in low-energy antikaon-deuteron scattering

Baru, V.FZJ* ; Epelbaum, E.FZJ* ; Rusetsky, A.

2009
Springer Berlin

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Please use a persistent id in citations: doi:10.1007/s10751-009-0065-y

Abstract: The effect of the nucleon recoil for the antikaon-deuteron scattering is investigated in the framework of the effective field theory. In particular, we concentrate on the calculation of the nucleon recoil effect for the double-scattering process. It is shown that the leading correction to the static term that emerges at order xi(1/2) with xi = M-K/m(N) vanishes due to a complete cancellation of individually large contributions. The resulting recoil effect in this process is found to be of the order of 10-15% as compared to the static term. We also briefly discuss the application of the method in the calculations of the multiple-scattering diagrams.

Keyword(s): J

Note: We would like to thank A. Gal, A. Kudryavtsev, U.-G. Meianer for interesting discussions. One of the authors ( A. R.) would like to thank B. Borasoy and U. Raha for collaboration at the early stage of the project. The work of E. E. and V. B. was supported in parts by funds provided from the Helmholtz Association to the young investigator group "Few-Nucleon Systems in Chiral Effective Field Theory" ( grant VH-NG-222). This research is part of the EU HadronPhysics2 project "Study of strongly interacting matter" under the Seventh Framework Programme of EU ( Grant agreement n. 227431). Work supported in part by DFG (SFB/TR 16, "Subnuclear Structure of Matter"), by the DFG-RFBR grant (436 RUS 113/991/0-1) and by the Helmholtz Association through funds provided to the virtual institute "Spin and strong QCD" (VH-VI-231). V. B. acknowledges the support of the Federal Agency of Atomic Research of the Russian Federation. A. R. acknowledges the financial support of 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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