Naslov
Production of the Δ++ in the reaction pp→pπ+n at 800 MeV

Autori
Hudomalj-Gabitzsch, J., Duck, I. M. ; Furić, Miroslav ; Mutchler, G. S. ; Clement, J. M. ; Felder, R. D. ; Dragoset, W. H. ; Phillips, G. C. ; Allred, J. C. ; Hungerford, E. V. ; Mayes, B. W. ; Pinsky, L. S. ; Williams, T. M.

Izvornik
Physical review. C, Nuclear physics (0556-2813) 18 (1978), 6; 2666-2677

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Delta++ production ; kinematical completness

Sažetak
Kinematically complete data for the reaction pp→pπ+n at 800 MeV have been accumulated at four proton lab angles (15°, 20°, 25°, and 30°) where the cross section d5σdp1dΩ1dΩ2 is dominated by Δ++ production. The data, spanning four momentum transfers tΔ++ between 0.07 and 0.3 (GeV/c)2, have been compared to the predictions of a pion and ρ exchange model with various baryonic intermediate states. The best agreement between the theoretical and experimental cross sections was obtained with the form factor range parameters Λπ=0.78 GeV/c and Λρ=1.8 GeV/c. The integrated pp→nΔ++ cross section was calculated to be 13.4 mb, which, in agreement with isospin predictions of the isobar model, accounts for 75% of the estimated experimental pp→NΔ cross section of 19±3 mb.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA