Improved limit on the branching ratio of μ-→e+ conversion on titanium

被引：95

作者：

Kaulard, J ^{[1
]}

Dohmen, C

Haan, H

Honecker, W

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

Rutsche, M

Pruys, HS

van der Schaaf, A

机构：

[1] RWTH Aachen, Phys Inst B 3, D-52056 Aachen, Germany

[2] ETH Zurich, Inst Teilchenphys, CH-5232 Villigen, Switzerland

[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[4] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

来源：

PHYSICS LETTERS B | 1998年 / 422卷 / 1-4期

关键词：

D O I：

10.1016/S0370-2693(97)01423-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The SINDRUM II spectrometer at PSI is used in searches for mu --> e conversion in muonic atoms. Here we report on a search for the charge-changing mu(-) --> e(+) conversion on titanium. The measurements yielded the new upper limits Gamma(mu(-)Ti --> e(+)Ca(GS))/Gamma(mu(-)Ti capture) < 1.7 x 10(-12) (90% CL) for the ground state transition and Gamma(mu(-)Ti --> e(+)Ca(GDR))/Gamma (mu(-)Ti capture)< 3.6 x 10(-11) (90% CL) for a giant dipole resonance excitation with both a mean energy and a width of 20 MeV. These results Improve on our previous best limits by a factor tar of 2.5. (C) 1998 Elsevier Science B.V.

引用

页码：334 / 338

页数：5

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