Improved limit on the branching ratio of mu->e conversion on lead

被引：118

作者：

Honecker, W

Dohmen, C

Haan, H

Junker, D

Otter, G

Starlinger, M

Wintz, P

Hofmann, J

Bertl, W

Egger, J

Krause, B

Eggli, S

Engfer, R

Findeisen, C

Hermes, EA

Kozlowski, T

Niebuhr, CB

Pruys, HS

vanderSchaaf, A

机构：

[1] ETH ZURICH,INST TEILCHENPHYS,CH-5232 VILLIGEN PSI,SWITZERLAND

[2] PAUL SCHERRER INST,CH-5232 VILLIGEN PSI,SWITZERLAND

[3] UNIV ZURICH,INST PHYS,CH-8057 ZURICH,SWITZERLAND

[4] INST NUCL STUDIES,PL-05400 OTWOCK,POLAND

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.76.200

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The SINDRUM II spectrometer at Paul Scherrer Institute is used in a search for coherent mu --> e conversion in muonic atoms. We report on a measurement on lead, which resulted in Gamma(mu(-)Pb --> e(-)Pb(g.s.))/Gamma(mu(-)Pb capture) < 4.6 X 10(-11) (90% C.L.). This upper limit improves on the previous value by an order of magnitude. Combined with the limit on titanium, it is interpreted in terms of phenomenological couplings between the lepton current and the isoscalar and isovector quark currents.

引用

页码：200 / 203

页数：4

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