Estimate of the Delta(1232) Component in the C-12 Nucleus

Authors
Bystritsky, VM Glavanakov, IV Grabmayr, P Krechetov, YF Saigushkin, OK Tabachenko, AN Fix, AI Schuvalov, EN
Citation
Vm. Bystritsky et al., Estimate of the Delta(1232) Component in the C-12 Nucleus, JETP LETTER, 73(9), 2001, pp. 453-456
Citations number
17
Categorie Soggetti
Physics
Journal title
JETP LETTERS
ISSN journal
00213640 → ACNP
Volume
73
Issue
9
Year of publication
2001
Pages
453 - 456
Database
ISI
SICI code
0021-3640(2001)73:9<453:EOTDCI>2.0.ZU;2-C
Abstract
The cross section for the C-12(gamma, pi (+)p) reaction was measured in the range of the Delta (1232) isobar. The data were analyzed using the models taking into account the nucleon and isobaric degrees of freedom of the C-12 nucleus. The conclusion is drawn that in the large-momentum transfer range the pi (+)p pairs are produced in the course of the direct knocking-out of Delta (++) isobar from the nucleus. The probability of finding the Delta i sobar in the ground-state C-12 nucleus is estimated at 0.018 +/- 0.005 Delt a isobars per nucleon. (C) 2001 MAIK "Nauka/Interperiodica".