Výsledky vyhľadávania
Názov The impact of kaon polarization in nuclear matter on the K- production in heavy-ion collisions Aut.údaje Evgeni E. Kolomeitsev, D. N. Voskresensky, B. Kämpfer Autor Kolomeitsev Evgeni E. 1970- (34%) UMBFP06 - Katedra fyziky
Spoluautori Voskresensky Dmitri (33%)
Kämpfer B. (33%)
Zdroj.dok. International Journal of Modern Physics E. Vol. 5, no. 2 (1996), pp. 313-328. - Singapore : World Scientific Publishing, 1996 Kľúč.slová Pion-production Hadronic matter rovnice - equations Jazyk dok. angličtina Krajina Singapur Systematika 53 Anotácia The impact of the kaon polarization in nuclear matter on the K- yield in intermediate-energy heavy-ion collisions is investigated. Our scenario of the strange particle production and dynamics is based on an expanding fireball model. This allows for a proper account of in-medium effects. A relation between observed K+ and K- yields is derived. Differential K- cross-sections are calculated and compared with available experimental data taken at various collision energies. It turns out that in-medium effects can modify the K- yields by factors 2 to 5 at beam energies between 2 and 1 AGeV. Kategória publikačnej činnosti ADE Číslo archívnej kópie 26370 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika 
nerozpoznaný
Názov Direct reactions involving pion production in hot nuclear matter Aut.údaje D. N. Voskresenskii, E. E. Kolomeitsev Autor Voskresensky Dmitri (50%)
Spoluautori Kolomeitsev Evgeni E. 1970- (50%)
Zdroj.dok. Physics of Atomic Nuclei. Vol. 58, no. 1 (1995), pp. 132-136. - New York : Pleiades Publishing, 1995 Kľúč.slová nuclear matter Pion-production Nuclear reactions Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Spojené štáty Anotácia Probabilities and differential cross sections for the production of pi- mesons in NN->NNpi reactions are calculated with allowance for a change in the NN interaction in nuclear matter. THe results obtained in an analytic form for arbitrary temperatures of matter and arbitrary energies and momenta of pions. URL Link do databázy WoS Kategória publikačnej činnosti ADE Číslo archívnej kópie 41850 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika 
článok
Názov Direct reactions with pion production in nucleus-nucleus collisions Aut.údaje D. N. Voskresenskii, E. E. Kolomeitsev Autor Voskresensky Dmitri (50%)
Spoluautori Kolomeitsev Evgeni E. 1970- (50%)
Zdroj.dok. Physics of Atomic Nuclei. Vol. 56, no. 2 (1993), pp. 252-259. - New York : Pleiades Publishing, 1993 Kľúč.slová Pion-production nucleus-nucleus collisions Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Spojené štáty Anotácia Various processes of pion production in nuclear matter at characteristic temperatures T much less than m(pi) are analyzed. It is shown that the pions are produced mainly in NN --> NN(pi) reactions. Taking into account the modification of the NN interaction in nucelar matter, probabilities and differential cross sections of production of pi- mesons in direct NN --> NNpi- reactions are calculated. It is shown that at incident-pion momenta q approximately 2m(pi) processes with pion production via DELTA-resonance intermediate states dominate. From a comparison of the results of the calculation with experimental data on pion production in nucleus-nucleus collisions it is concluded that piN absorption is strong and increases with increasing temperature and density of the nuclear matter. At the initial stage of development of the nuclear fireball the pions are confined inside the system at practically all momenta. Soft (q less-than-or-similar-to m(pi)) pions are emitted at the intermediate stage of expansion of the nuclear fireball, and harder pions are released together with nucleons at the final stage of breakup of the fireball. URL Link do databázy WoS Kategória publikačnej činnosti ADE Číslo archívnej kópie 25471 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika článok