Diogo Boito , Maarten Golterman , Matthias Jamin , Andisheh Mahdavi , Kim Maltman , James Osborne , Santiago Peris
{"title":"来自tau的强耦合会毫无偏见地衰减","authors":"Diogo Boito , Maarten Golterman , Matthias Jamin , Andisheh Mahdavi , Kim Maltman , James Osborne , Santiago Peris","doi":"10.1016/j.nuclphysbps.2014.09.014","DOIUrl":null,"url":null,"abstract":"<div><p>We review our recent determination of the strong coupling <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> from the OPAL data for non-strange hadronic tau decays. We find that <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>(</mo><msubsup><mrow><mi>m</mi></mrow><mrow><mi>τ</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>)</mo><mo>=</mo><mn>0.325</mn><mo>±</mo><mn>0.018</mn></math></span> using fixed-order perturbation theory, and <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>(</mo><msubsup><mrow><mi>m</mi></mrow><mrow><mi>τ</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>)</mo><mo>=</mo><mn>0.347</mn><mo>±</mo><mn>0.025</mn></math></span> using contour-improved perturbation theory. At present, these values supersede any earlier determinations of the strong coupling from hadronic tau decays, including those from ALEPH data.</p></div>","PeriodicalId":93343,"journal":{"name":"Nuclear physics. B, Proceedings, supplements","volume":"253 ","pages":"Pages 56-59"},"PeriodicalIF":0.0000,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.014","citationCount":"1","resultStr":"{\"title\":\"The strong coupling from tau decays without prejudice\",\"authors\":\"Diogo Boito , Maarten Golterman , Matthias Jamin , Andisheh Mahdavi , Kim Maltman , James Osborne , Santiago Peris\",\"doi\":\"10.1016/j.nuclphysbps.2014.09.014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We review our recent determination of the strong coupling <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> from the OPAL data for non-strange hadronic tau decays. We find that <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>(</mo><msubsup><mrow><mi>m</mi></mrow><mrow><mi>τ</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>)</mo><mo>=</mo><mn>0.325</mn><mo>±</mo><mn>0.018</mn></math></span> using fixed-order perturbation theory, and <span><math><msub><mrow><mi>α</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>(</mo><msubsup><mrow><mi>m</mi></mrow><mrow><mi>τ</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>)</mo><mo>=</mo><mn>0.347</mn><mo>±</mo><mn>0.025</mn></math></span> using contour-improved perturbation theory. At present, these values supersede any earlier determinations of the strong coupling from hadronic tau decays, including those from ALEPH data.</p></div>\",\"PeriodicalId\":93343,\"journal\":{\"name\":\"Nuclear physics. B, Proceedings, supplements\",\"volume\":\"253 \",\"pages\":\"Pages 56-59\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.nuclphysbps.2014.09.014\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear physics. B, Proceedings, supplements\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0920563214001455\",\"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/S0920563214001455","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The strong coupling from tau decays without prejudice
We review our recent determination of the strong coupling from the OPAL data for non-strange hadronic tau decays. We find that using fixed-order perturbation theory, and using contour-improved perturbation theory. At present, these values supersede any earlier determinations of the strong coupling from hadronic tau decays, including those from ALEPH data.
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