Title

ELECTROMAGNETIC EFFECTS IN PSI'-]J-PSI+PI-O AND QUARK MASSES

Publication Date

1985

Journal or Book Title

PHYSICS LETTERS B

Abstract

We investigate the contribution of electromagnetism to the decay ψ′ → J/ψ + π0, and find it to be small compared to the effect of quark masses, calculated via the axial anomaly. The decay rate is then a reliable measure of quark masses, and we extract (md−mu)/ms = 0.033±0.005.

Comments

Published version is located at http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVN-46YCDJX-HF&_user=1516330&_coverDate=12%2F12%2F1985&_alid=1524429328&_rdoc=1&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5539&_sort=r&_st=13&_docanchor=&view=c&_ct=1&_acct=C000053443&_version=1&_urlVersion=0&_userid=1516330&md5=8e2a4d161cae07bc76ce21f4400d84e6&searchtype=a

Volume

164

Pages

401-403

Issue

4-6

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