Ratio F[subscript K]/F[subscript pi] in QCD
We determine the ratio F[subscript K]/F[subscript pi] in QCD with N[subscript f]=2+1 flavors of sea quarks, based on a series of lattice calculations with three different lattice spacings, large volumes, and a simulated pion mass reaching down to about 190 MeV. We obtain F[subscript K]/F[subscript...
| প্রধান লেখক: | , , , , , , , , , |
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| অন্যান্য লেখক: | |
| বিন্যাস: | প্রবন্ধ |
| ভাষা: | en_US |
| প্রকাশিত: |
American Physical Society
2010
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| অনলাইন ব্যবহার করুন: | http://hdl.handle.net/1721.1/58694 |
| _version_ | 1826211225075187712 |
|---|---|
| author | Krieg, Stefan F. Dürr, S. Fodor, Z. Hoelbling, C. Katz, S. D. Kurth, T. Lellouch, L. Lippert, T. Ramos, A. Szabó, K. K. |
| author2 | Massachusetts Institute of Technology. Center for Theoretical Physics |
| author_facet | Massachusetts Institute of Technology. Center for Theoretical Physics Krieg, Stefan F. Dürr, S. Fodor, Z. Hoelbling, C. Katz, S. D. Kurth, T. Lellouch, L. Lippert, T. Ramos, A. Szabó, K. K. |
| author_sort | Krieg, Stefan F. |
| collection | MIT |
| description | We determine the ratio F[subscript K]/F[subscript pi] in QCD with N[subscript f]=2+1 flavors of sea quarks, based on a series of lattice calculations with three different lattice spacings, large volumes, and a simulated pion mass reaching down to about 190 MeV. We obtain F[subscript K]/F[subscript pi]=1.192(7)[subscript stat](6)[subscript syst]. This result is then used to give an updated value of the Cabibbo-Kobayashi-Maskawa) matrix element |V[subscript us]|. The unitarity relation for the first row of this matrix is found to be well observed. |
| first_indexed | 2024-09-23T15:02:34Z |
| format | Article |
| id | mit-1721.1/58694 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:02:34Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/586942022-10-02T00:12:14Z Ratio F[subscript K]/F[subscript pi] in QCD Ratio FK/Fπ in QCD Krieg, Stefan F. Dürr, S. Fodor, Z. Hoelbling, C. Katz, S. D. Kurth, T. Lellouch, L. Lippert, T. Ramos, A. Szabó, K. K. Massachusetts Institute of Technology. Center for Theoretical Physics Krieg, Stefan F. Krieg, Stefan F. We determine the ratio F[subscript K]/F[subscript pi] in QCD with N[subscript f]=2+1 flavors of sea quarks, based on a series of lattice calculations with three different lattice spacings, large volumes, and a simulated pion mass reaching down to about 190 MeV. We obtain F[subscript K]/F[subscript pi]=1.192(7)[subscript stat](6)[subscript syst]. This result is then used to give an updated value of the Cabibbo-Kobayashi-Maskawa) matrix element |V[subscript us]|. The unitarity relation for the first row of this matrix is found to be well observed. United States. Department of Energy (Grant No. DE-FG02-05ER25681) European Union (grant I3HP) Hungarian Scientific Research Foundation (grant AT049652) Deutsche Forschungsgemeinschaft (grant FO 502/1-2) Deutsche Forschungsgemeinschaft (SFB/TR-55) European Union (RTN contract MRTN-CT-2006-035482 (FLAVIAnet)) Institut National de Physique Nucleaire et Physique des Particules/CNRS (GDR Grant No. 2921) Institut National de Physique Nucleaire et Physique des Particules/CNRS (PICS grant no. 4707) 2010-09-23T21:57:30Z 2010-09-23T21:57:30Z 2010-03 2010-02 Article http://purl.org/eprint/type/JournalArticle 1550-7998 http://hdl.handle.net/1721.1/58694 Dürr, S. et al. “Ratio F[subscript K]/F[subscript pi] in QCD.” Physical Review D 81.5 (2010): 054507. © 2010 The American Physical Society. en_US http://dx.doi.org/10.1103/PhysRevD.81.054507 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Krieg, Stefan F. Dürr, S. Fodor, Z. Hoelbling, C. Katz, S. D. Kurth, T. Lellouch, L. Lippert, T. Ramos, A. Szabó, K. K. Ratio F[subscript K]/F[subscript pi] in QCD |
| title | Ratio F[subscript K]/F[subscript pi] in QCD |
| title_full | Ratio F[subscript K]/F[subscript pi] in QCD |
| title_fullStr | Ratio F[subscript K]/F[subscript pi] in QCD |
| title_full_unstemmed | Ratio F[subscript K]/F[subscript pi] in QCD |
| title_short | Ratio F[subscript K]/F[subscript pi] in QCD |
| title_sort | ratio f subscript k f subscript pi in qcd |
| url | http://hdl.handle.net/1721.1/58694 |
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