K. Maltman , P.A. Boyle , L. DelDebbio , R.J. Hudspith , N. Garron , E. Kerrane , J.M. Zanotti
{"title":"点阵输入tau V-us谜题","authors":"K. Maltman , P.A. Boyle , L. DelDebbio , R.J. Hudspith , N. Garron , E. Kerrane , J.M. Zanotti","doi":"10.1016/j.nuclphysbps.2014.09.013","DOIUrl":null,"url":null,"abstract":"<div><p>|<span><math><msub><mrow><mi>V</mi></mrow><mrow><mi>u</mi><mi>s</mi></mrow></msub></math></span>| values obtained from recent hadronic-<em>τ</em>-decay-based flavor-breaking sum rule analyses are significantly lower than expectations based on 3-family unitarity and results obtained from other sources. We use lattice data to investigate the accuracy/reliability of the OPE representation of the flavor-breaking correlator combination entering these analyses. The behavior of an alternate combination, chosen to reduce problems associated with the slow convergence of the <span><math><mi>D</mi><mo>=</mo><mn>2</mn></math></span> OPE series, and entering an alternate mixed <em>τ</em>-electroproduction sum rule, is also investigated. Preliminary updates of both analyses, predicated on lessons learned from the lattice data, are also presented.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":"253 ","pages":"Pages 52-55"},"PeriodicalIF":0.0000,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.013","citationCount":"0","resultStr":"{\"title\":\"Lattice Input on the τ Vus Puzzle\",\"authors\":\"K. Maltman , P.A. Boyle , L. DelDebbio , R.J. Hudspith , N. Garron , E. Kerrane , J.M. Zanotti\",\"doi\":\"10.1016/j.nuclphysbps.2014.09.013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>|<span><math><msub><mrow><mi>V</mi></mrow><mrow><mi>u</mi><mi>s</mi></mrow></msub></math></span>| values obtained from recent hadronic-<em>τ</em>-decay-based flavor-breaking sum rule analyses are significantly lower than expectations based on 3-family unitarity and results obtained from other sources. We use lattice data to investigate the accuracy/reliability of the OPE representation of the flavor-breaking correlator combination entering these analyses. The behavior of an alternate combination, chosen to reduce problems associated with the slow convergence of the <span><math><mi>D</mi><mo>=</mo><mn>2</mn></math></span> OPE series, and entering an alternate mixed <em>τ</em>-electroproduction sum rule, is also investigated. Preliminary updates of both analyses, predicated on lessons learned from the lattice data, are also presented.</p></div>\",\"PeriodicalId\":93343,\"journal\":{\"name\":\"Nuclear physics. B, Proceedings, supplements\",\"volume\":\"253 \",\"pages\":\"Pages 52-55\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.013\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear physics. B, Proceedings, supplements\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0920563214001443\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear physics. B, Proceedings, supplements","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0920563214001443","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
|| values obtained from recent hadronic-τ-decay-based flavor-breaking sum rule analyses are significantly lower than expectations based on 3-family unitarity and results obtained from other sources. We use lattice data to investigate the accuracy/reliability of the OPE representation of the flavor-breaking correlator combination entering these analyses. The behavior of an alternate combination, chosen to reduce problems associated with the slow convergence of the OPE series, and entering an alternate mixed τ-electroproduction sum rule, is also investigated. Preliminary updates of both analyses, predicated on lessons learned from the lattice data, are also presented.