MEASUREMENT OF THE SLOPE OF THE PI-0 ELECTROMAGNETIC FORM-FACTOR

被引：35

作者：

FARZANPAY, F

GUMPLINGER, P

STETZ, A

POUTISSOU, JM

BLEVIS, I

HASINOFF, M

VIRTUE, CJ

WALTHAM, CE

ROBERTSON, BC

MULERA, T

SHOR, A

LOWE, J

CHEW, SH

机构：

[1] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

[2] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 1Z1,BC,CANADA

[3] QUEENS UNIV,DEPT PHYS,KINGSTON K7L 3N6,ONTARIO,CANADA

[4] UNIV CALIF BERKELEY,BERKELEY,CA 94720

[5] UNIV BIRMINGHAM,DEPT PHYS,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

[6] NUCL PHYS LAB,OXFORD OX1 3RH,ENGLAND

来源：

PHYSICS LETTERS B | 1992年 / 278卷 / 04期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0370-2693(92)90577-Q

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the slope parameter of the pi(0) electromagnetic form factor by measuring the partial branching ratio of the Dalitz decay pi(0) --> gamma-e+e- into high-invariant-mass electron-positron pairs. We obtain a value a = 0.026 with a total (statistical and systematic) error of +/- 0.054, in agreement with vector dominance and quark loop calculations.

引用

页码：413 / 418

页数：6

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