Duality violation in QCD Sum Rules with the LR correlator

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• 作者：Martí ; n Gonzá ; lez-Alonso ; Antonio Pich ; Joaquim Prades
• 刊名：Nuclear Physics B - Proceedings Supplements
• 出版年：2010
• 出版时间：October-November 2010
• 年：2010
• 卷：207-208
• 期：Complete
• 页码：285-289
• 全文大小：834 K

文摘

We analyse the so-called violations of quark-hadron duality in Finite Energy Sum Rules (FESRs) with the LR correlator, through the study of the possible high-energy behavior of the LR spectral function, taking into account all known short-distance constraints and the experimental tau-decay data. In particular we show that the use of pinched weights (PWs) allows to determine with high accuracy the dimension six and eight contributions in the Operator-Product Expansion, and [M. González-Alonso, A. Pich, and J. Prades, Phys. Rev. D81 (2010) 074007, <lk key=""1001.2269-arXiv:1001.2269 [hep-ph]"" type=""arxiv"" mimetype=""preprint"">arXiv:1001.2269 [hep-ph]; M. González-Alonso, A. Pich, and J. Prades, Phys. Rev. D82 (2010) 014019, <lk key=""1004.4987-arXiv:1004.4987 [hep-ph]"" type=""arxiv"" mimetype=""preprint"">arXiv:1004.4987 [hep-ph]].