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What is the mechanism for three-nucleon absorption of pions in 3He? (CROSBI ID 261720)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Backenstoss, G. ; Izycki, M. ; Powers, R. ; Salvisberg, P. ; Steinacher, M. ; Weber, P. ; Weyer, H.J. ; Hoffart, A. ; Rzehorz, B. ; Ullrich, Horst et al. What is the mechanism for three-nucleon absorption of pions in 3He? // Physics letters. B, 222 (1989), 1; 7-11. doi: 10.1016/0370-2693(89)90714-4

Podaci o odgovornosti

Backenstoss, G. ; Izycki, M. ; Powers, R. ; Salvisberg, P. ; Steinacher, M. ; Weber, P. ; Weyer, H.J. ; Hoffart, A. ; Rzehorz, B. ; Ullrich, Horst ; Bosnar, Damir ; Furić, Miroslav ; Petković, Tomislav

engleski

What is the mechanism for three-nucleon absorption of pions in 3He?

Experimental data for 3He(π+, pp)p at Tπ=120 MeV in a kinematical region dominated by three-nucleon absorption, where all three protons have obtained an appreciable amount of energy, are analyzed by means of variables specifically sensitive to different reaction mechanisms. The data are compared with predictions for two-step mechanisms and a genuine three-nucleon absorption mechanism. No evidence is found for such two-step processes as scattering or charge exchange preceding a two-nucleon absorption or as two-nucleon absorption followed by “Hard FSI”. The results, however, agree with a genuine three-nucleon absorption process, consistent with the recently measured phase-space-like behavior of this process.

Mechanisms for Three Nucleon Pion Absorption

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Podaci o izdanju

222 (1)

1989.

7-11

objavljeno

0370-2693

1873-2445

10.1016/0370-2693(89)90714-4

Povezanost rada

Fizika

Poveznice
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