Elementary-particle approach to some nuclear pion reactions
نویسندگان
چکیده
منابع مشابه
An Elementary Approach to Some Analytic Asymptotics
Fredman and Knuth have treated certain recurrences, such as M(O) 1 and M(n + 1) min (aM(k) + 3M(nk)) O 1, by means of auxiliary recurrences such as J" 0 if 0 _< x < 1, h(x) l+h(x/cz)+h(x//) ifl_<x< The asymptotic behavior of h(x) as x oo with a and 3 fixed depends on whether log a/logf is rational or irrational. The solution of Fredman and Knuth used analytic methods in bo...
متن کاملDiffusion - Limited Aggregation Processes with 3 - Particle Elementary Reactions
A diffusion-limited aggregation process, in which clusters coalesce by means of 3-particle reaction, A + A + A → A, is investigated. In one dimension we give a heuristic argument that predicts logarithmic corrections to the mean-field asymptotic behavior for the concentration of clusters of mass m at time t, C m (t) ∼ m −1/2 (log(t)/t) 3/4 , for 1 ≪ m ≪ t/ log(t). The total concentration of clu...
متن کاملIn-Medium Properties of Vector Mesons in Elementary Nuclear Reactions
While the vacuum properties of most hadrons are known to reasonable accuracy today, it is a much-debated question how these properties change in nuclear matter. In particular for the light vector mesons there have been various theoretical predictions regarding their in-medium properties. One of the expected in-medium effects is the so-called ’collisinal broadening’ of the meson spectral functio...
متن کاملDouble Pion Production Reactions
We report on reactions producing two pions induced by real and virtual photons or nucleons. The role of different resonances in these reactions is emphasized. Novel results on coherent 2π photoproduction in nuclei are also reported. 1 Double pion photoproduction on the nucleon. The γN → π+π−N reaction is attracting attentions of both theoretical and experimental groups and is bound to play a si...
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: Il Nuovo Cimento A
سال: 1970
ISSN: 0369-3546,1826-9869
DOI: 10.1007/bf02824909