NEGATIVE PION-PRODUCTION IN SUBTHRESHOLD HEAVY-ION COLLISIONS

被引：15

作者：

SUZUKI, T

FUKUDA, M

ICHIHARA, T

INABE, N

KUBO, T

NAKAGAWA, T

YOSHIDA, K

TANIAHATA, I

KOBAYASHI, T

SUDA, T

SHIMOURA, S

FUJIWARA, M

机构：

[1] KEK NAT LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

[2] TOHOKU UNIV,COLL GEN EDUC,SENDAI,MIYAGI 980,JAPAN

[3] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

[4] OSAKA UNIV,NUCL PHYS RES CTR,SUITA,OSAKA 567,JAPAN

来源：

PHYSICS LETTERS B | 1991年 / 257卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90852-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Inclusive pi- spectra have been measured for N-14 + C collisions at 41A, 67A, 80A and 135A MeV, the lowest energies measured for the charged pion. The cross sections fall exponentially with T-pi and the exponential slope factors at 90-degrees in the nucleon-nucleon center of mass frame are determined. Energy distributions below a beam energy of 100A MeV are less steep than expected from the monotonic decrease of the slope factor down to 100A MeV. The production mechanism of energetic pions far below threshold is discussed for several models.

引用

页码：27 / 31

页数：5

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