منابع مشابه
Hyperon resonances and K− production at SIS
In a recent work Hartnack, Oeschler and Aichelin [1] studied the possible importance of in-medium modified πY → K̄N cross sections in subthreshold K− production at SIS. Within their scenario, which does not consider a momentum dependence of the antikaon mean field nor a proper treatment of the spectral distributions of hadrons, they observe an enhancement of the K− yield by a factor 2 if the πY ...
متن کاملThe Role of Resonances in Rare K Decays
The decays K → πl+l−, K → πγγ and K → πνν̄ are investigated using the higher order terms of the chiral perturbation theory. The counterterms induced by strong, weak and electromagnetic interactions are determined assuming the resonance exchange. The chiral perturbation theory (CHPT) offers an useful framework to describe K decays1−15). The role of resonances in CHPT has been much better understo...
متن کاملVector and Scalar Meson Resonances in K → πππ Decays
Corrections to K → πππ decays induced by vector and scalar meson exchange are investigated within chiral perturbation theory. The widths of scalar mesons are analyzed and their influence on K → πππ parameters were examined. The overall corrections were found to be parameter dependent, but contributing in some cases as much as 10%.
متن کاملNucleon and resonances in K (1385) photoproduction from nucleons
The reaction mechanisms for K (1385) photoproduction from the reaction γp → K+ 0(1385) in the resonance energy region are investigated in a hadronic model. Both contributions from N and resonances of masses around 2 GeV as given in the Review of Particle Data Group and by the quark model predictions are included. The Lagrangians for describing the decays of these resonances into K (1385) are co...
متن کاملDecays of Baryon Resonances into ΛK + , Σ 0 K + and Σ + K 0
Cross sections, beam asymmetries, and recoil polarisations for the reactions γp → K + Λ; γp → K + Σ 0 , and γp → K 0 Σ + have been measured by the SAPHIR, CLAS, and LEPS collaborations with high statistics and good angular coverage for centre-of-mass energies between 1.6 and 2.3 GeV. The combined analysis of these data with data from π and η photoproduction reveals evidence for new baryon reson...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review C
سال: 2015
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.91.065208