Towards order alpha(s)**4 accuracy in tau decaysстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science
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Дата последнего поиска статьи во внешних источниках: 31 октября 2012 г.
Аннотация:Recently computed terms of order O(α4sn2f) in the perturbative series for the τ decay rate, and similar (new) strange quark mass corrections, are used to discuss the validity of various optimization schemes. The results are then employed to arrive at improved predictions for the complete terms of order O(α4s) and O(α5s) in the massless limit as well as for terms due to the strange quark mass. The phenomenological implications are presented.