SOLUTION OF THE ORTHOPOSITRONIUM LIFETIME PUZZLE-Reference-Cited by-同舟云学术

SOLUTION OF THE ORTHOPOSITRONIUM LIFETIME PUZZLE

Published:2004-09-20 Issue:23 Volume:19 Page:3927-3938
ISSN:0217-751X
Container-title:International Journal of Modern Physics A
language:en
Short-container-title:Int. J. Mod. Phys. A

Author:

ASAI S.¹,JINNOUCHI O.²,KOBAYASHI T.²

Affiliation:

1. CERN EP-div, CH-1211 Geneva 23, Switzerland

2. International Center for Elementary Particle Physics, University of Tokyo, Faculty of Science, Building 1, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan

Abstract

The intrinsic decay rate of orthopositronium formed in SiO 2 powder is measured using the direct 2γ correction method such that the time dependence of the pick-off annihilation rate is precisely determined. The decay rate of orthopositronium is found to be 7.0396±0.0012(stat.)±0.0011(sys.)μs-1, which is consistent with our previous measurements with about twice the accuracy. Results agree well with the O(α2) QED prediction, and also with a result reported very recently using nanoporous film.

Publisher

World Scientific Pub Co Pte Lt

Subject

Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0217751X0402018X

Reference11 articles.

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