(p)over-bar-p low energy parameters from annihilation cross section data

被引：92

作者：

Carbonell, J

Protasov, KV

Zenoni, A

机构：

[1] UNIV BRESCIA,DIPARTIMENTO CHIM & FIS INGN & MAT,I-25133 BRESCIA,ITALY

[2] IST NAZL FIS NUCL,I-25133 BRESCIA,ITALY

来源：

PHYSICS LETTERS B | 1997年 / 397卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(97)00190-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The recent experimental data obtained by the OBELIX group on total <(p)over bar p> annihilation cross section are analysed; the low energy spin averaged parameters of the <(p)over bar p> scattering amplitude (the imaginary parts of the S-wave scattering length and P-wave scattering volume) are extracted from the data. Their values are found to be equal to Im a(sc) = -0.69 +/- 0.01(stat) +/- 0.03(sys) fm, Im A(sc) = -0.76 +/- 0.05(stat) +/- 0.04(sys) fm(3). The results are in very good agreement with existing atomic data. (C) 1997 Elsevier Science B.V.

引用

页码：345 / 349

页数：5

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