Updated determination of from hadronic ¦Ó decays

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• 作者：Diogo Boito^a ; ^* ; ^{diogo.boito@tum.de} ; Maarten Golterman^b ; ^c ; Matthias Jamin^d ; Andisheh Mahdavi^b ; Kim Maltman^e ; ^f ; James Osborne^g ; Santiago Peris^h
• 关键词：¦Ás¦Ás ; tau decay ; duality violations
• 刊名：Nuclear Physics B - Proceedings Supplements
• 出版年：2013
• 出版时间：January, 2013
• 年：2013
• 卷：234
• 期：Complete
• 页码：203-206
• 全文大小：151 K

文摘

Recently we introduced a new framework to extract from the non-strange hadronic ¦Ó-decay spectral functions taking into account duality violations and treating nonperturbative effects self-consistently. Using an updated version of the OPAL 1998 data, we obtain and in fixed-order and contour-improved perturbation theory, respectively. The results from our multi-parameter nonlinear fits were corroborated by a Markov-Chain Monte Carlo investigation of the posterior probability distributions of the model parameters.