ENERGY-DEPENDENCE OF 2-NUCLEON PION ABSORPTION ON O-16

被引：13

作者：

HYMAN, SD

MACK, DJ

ROOS, PG

BREUER, H

CHANT, NS

KHAZAIE, F

RITCHIE, BG

SILK, JD

KYLE, GS

AMAUDRUZ, PA

BAUER, TS

INGRAM, CHQ

RENKER, D

SCHUMACHER, RA

SENNHAUSER, U

BURGER, WJ

机构：

[1] UNIV MARYLAND, DEPT PHYS, College Pk, MD 20742 USA

[2] NEW MEXICO STATE UNIV, DEPT PHYS, LAS CRUCES, NM 88003 USA

[3] PAUL SCHERRER INST, CH-5234 VILLIGEN, SWITZERLAND

[4] MIT, BATES LAB, MIDDLETON, MA 01949 USA

来源：

PHYSICAL REVIEW C | 1993年 / 47卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.47.1184

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Inclusive O-16(pi+, p) and exclusive O-16(pi+, 2p) data are presented for 115 MeV and 165 MeV pions. Using a combination of distorted-wave impulse approximation (DWIA) calculations for two-nucleon absorption and phase space simulations for more complicated processes, the data are fit and the total direct two-nucleon absorption cross sections are extracted. These cross sections fall faster with energy than pi+d --> pp. The DWIA calculations were used to calculate the effects of final state interactions (FSI). After correcting for FSI, the two-nucleon absorption process is found to dominate at 115 MeV, becoming less important as the incident energy increases to 165 MeV. The decrease with energy in the two-nucleon fraction of the total absorption cross section is found to be in remarkably good agreement with theoretical predictions.

引用

页码：1184 / 1199

页数：16

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