TOTAL CROSS-SECTION OF THE PP-]PP-ETA REACTION NEAR-THRESHOLD

被引：122

作者：

BERGDOLT, AM

BERGDOLT, G

BING, O

BOUCHAKOUR, A

BROCHARD, F

HIBOU, F

MOALEM, A

TALEB, A

COMBESCOMETS, MP

COURTAT, P

GACOUGNOLLE, R

LEBORNEC, Y

LOIRELEUX, E

REIDE, F

TATISCHEFF, B

WILLIS, N

BOIVIN, M

NEFKENS, BMK

PLOUIN, F

机构：

[1] BEN GURION UNIV NEGEV,DEPT PHYS,IL-84105 BEER SHEVA,ISRAEL

[2] INST PHYS NUCL LYON,F-91406 ORSAY,FRANCE

[3] CENS,LAB NATL SATURNE,F-91191 GIF SUR YVETTE,FRANCE

[4] UNIV CALIF LOS ANGELES,DEPT PHYS,LOS ANGELES,CA 90024

来源：

PHYSICAL REVIEW D | 1993年 / 48卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.48.R2969

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The pp --> ppeta reaction is studied at energies near the eta production threshold. The total cross sections at nominal machine energies of 1260, 1265, and 1300 MeV are 90+/-15, 790+/-120, and 3460+/-690 nb, respectively. None of the existing perturbative model calculations reproduces the energy dependence, which deviates strongly from phase space. This suggests that the cross section is enhanced in the near vicinity of the production threshold by a large eta-pp scattering length.

引用

页码：R2969 / R2973

页数：5

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