The corresponding propagators are easily found to be ($ r fa)= [24w 2 (^2-m 2 )]~1{ (yp+m) ti'l(yp+m)T s (yp~m)T r 2+2(yp+m)l\ (yp-m)r r (yp+m)} +I72m^~1{yp tr[r s r^]+2 tr[ T^rs r-]+27^r 5 r--2r sT^r -+2r s r^}+[8w]-1 {tr[r ,r']+2r j*}. Similarly, for the spin-(^) field we may write and find for the propagators (rp r $ s ) + = [\2m 2 (p 2~m2 )']~l{ (yp+m) tr[(7^+w)r s (7^-w)r r ]-(yp+m)T s (yp-m)T r (yp+m)} -[36W 2 ]-1 {T^ tr[r s r^]-4 tr[ 7^rs r^+ 7^rs r'*+5r s 7^r'-+r s r^}+[4m]-1 {tr[r s r^-r s r'*}.The explicit evaluation of these propagators is straightforward but the result is not particularly illuminating, and we omit it. We note that the residues at the pole p 2 =m 2 are identical with those of SDS, but that the contact terms are different. The asymptotic behavior for large p is no worse than linear.Low-energy iT~-meson interactions in hydrogen are studied in the following channels:
K~+p-*K-+p, K-+p-*2-+T + ,K~+p -• S+-T-7T-, and cross sections, as a function of momentum, are presented in the region of 60-300 MeV/c K~ laboratory momentum. These cross sections, combined with existing data, are used to fit the zero-effective-range theory of Dalitz and Tuan. Two possible solutions are obtained; the preferred one agrees with previous higher energy data. The favored solution also suggests an S-wave bound state at 1410 MeV, which could be associated with the Fo* at 1405 MeV whose spin is still undetermined. Various properties of the two solutions are presented for K~p interactions and K 2°p interactions.
The differential cross sections for K +d coherent, breakup, and charge-exchange scattering have been measured at several momenta in the interval 25C-600 MeV/c. The data have been fitted using a partial-wave analysis.Assuming an s-wave description of I = 1 scattering and using data from the coherent and charge-exchange channels, a description of I = 0 K ' -N scattering by a combination of s and p waves in a simple singlescattering impulse model has 'been attempted. The phase shifts obtained are unique up to the Fermi-Yang ambiguity, which can be removed by using existing polarization results at 600 MeV/c.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.