Dispersion Relations for Kaon-Nucleon Scattering andKKππ Interaction
نویسندگان
چکیده
منابع مشابه
Chiral corrections to kaon-nucleon scattering lengths
We calculate the threshold T-matrices of kaon-nucleon and antikaon-nucleon scattering to one loop order in SU(3) heavy baryon chiral perturbation theory. To that order the complex-valued isospin-1 KN threshold T-matrix can be successfully predicted from the isospin-0 and 1 KN threshold T-matrices. As expected perturbation theory fails to explain the isospin-0 KN threshold T-matrix which is comp...
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The s-waveKN scattering amplitude is computed up to one-loop order corresponding to next-to-next-to-leading order (or N2LO in short) with a heavy-baryon effective chiral Lagrangian. Constraining the low-energy constants by on-shell scattering lengths, we obtain contributions of each chiral order up to N2LO and find that the chiral corrections are “natural” in the sense of viable effective field...
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Recent experimental results on the proton and neutron polarizabilities are examined from the point of view of backward dispersion relations. Results are found to be in reasonable agreement with the measured values. A rigorous relationship between the nucleon and pion polarizabilities is derived and shown to be in excellent agreement with several models. Research supported in part by the Nationa...
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The pion-nucleon and kaon-nucleon scattering lengths are studied in the QCD sum rule. We show that the leading and next-to-leading order terms of the OPE give rise to the Tomozawa-Weinberg and sigma terms, respectively. We also show that in the kaon-nucleon system the Λ(1405) contribution has to be subtracted from the OPE side in order to obtain the scattering length. The odd components of the ...
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Abstract. Interactions of charmed and strange mesons with baryonic matter can be calculated in the nonrelativistic quark potential model. For KN scattering data exists, and the theoretical results for S-waves are in approximate agreement with experiment. Here we apply the same model to the scattering of open-charm (D) mesons by nucleons, and give quark model predictions for DN scattering amplit...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1961
ISSN: 0033-068X
DOI: 10.1143/ptp.25.753