MEASUREMENTS OF NN-]D-PI VERY NEAR THRESHOLD .1. THE NP-]D-PI-0 CROSS-SECTION

被引：59

作者：

HUTCHEON, DA

KORKMAZ, E

MOSS, GA

ABEGG, R

DAVISON, NE

EDWARDS, GWR

GREENIAUS, LG

MACK, D

MILLER, CA

OLSEN, WC

VANHEERDEN, IJ

YANLIN, YE

机构：

[1] UNIV ALBERTA,NUCL RES CTR,EDMONTON T6G 2N5,ALBERTA,CANADA

[2] UNIV MANITOBA,DEPT PHYS,WINNIPEG R3T 2N2,MANITOBA,CANADA

[3] UNIV WESTERN CAPE,DEPT PHYS,BELLVILLE 7535,SOUTH AFRICA

来源：

NUCLEAR PHYSICS A | 1991年 / 535卷 / 3-4期

关键词：

H-1(N; PI-0); E; 275-291; MEV; MEASURED SIGMA(E; THETA); LIQUID HYDROGEN TARGETS;

D O I：

10.1016/0375-9474(91)90479-P

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：

We have measured cross sections for the reaction np --> d pi-0 at beam energies very near the pion-production threshold. The yield near threshold is 23% lower than the previously accepted value based on pi+ d --> pp data. P-wave pion production was observed at energies as low as 1.5 MeV (c.m.) above threshold. There was no evidence of narrow pi-NN resonances in the energy range surveyed - 275 to 291 MeV, corresponding to pion c.m. momenta between 2 and 43 MeV/c.

引用

页码：618 / 636

页数：19

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