CHARGED-PION LIFETIME AND A LIMIT ON A FUNDAMENTAL LENGTH

被引：17

作者：

GREENBERG, AJ

AYRES, DS

CORMACK, AM

KENNEY, RW

CALDWELL, DO

ELINGS, VB

HESSE, WP

MORRISON, RJ

机构：

[1] Lawrence Radiation Laboratory, University of California, Berkeley

[2] Department of Physics, University of California, Santa Barbara

[3] Department of Physics, University of California, Santa Barbara, CA

[4] Argonne National Laboratory, Argonne

[5] Physics Department, Tufts University, Medford

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 23卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.23.1267

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The lifetime of the charged pion has been determined in flight. The agreement of our result, 26.02 ± 0.04 nsec, with experiments of comparable precision made with pions at rest provides the most precise verification of time dilation. In the model of Lundberg and Rédei this comparison sets an upper limit on a fundamental length of 3 × 10-15 cm. Using the measurements of velocity and momentum for both π+ and π-, we also obtain m(π+)m(π-)=1.0002±0.0005. © 1969 The American Physical Society.

引用

页码：1267 / +

页数：1

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