Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay
We perform the two-loop matching calculation for heavy-to-light currents from QCD onto soft-collinear effective theory for the complete set of Dirac structures. The newly obtained matching coefficients enter several phenomenological applications, of which we discuss heavy-to-light form factor ratios...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1797098513513840640 |
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| author | Bell, G Beneke, M Huber, T Li, X |
| author_facet | Bell, G Beneke, M Huber, T Li, X |
| author_sort | Bell, G |
| collection | OXFORD |
| description | We perform the two-loop matching calculation for heavy-to-light currents from QCD onto soft-collinear effective theory for the complete set of Dirac structures. The newly obtained matching coefficients enter several phenomenological applications, of which we discuss heavy-to-light form factor ratios and exclusive radiative decays, as well as the semi-inclusive decay B̄→Xsℓ+ℓ-. For this decay, we observe a significant shift of the forward-backward asymmetry zero and find q02=(3.34-0.25+0.22)GeV2 for an invariant mass cut mXcut=2.0GeV. © 2010 Elsevier B.V. |
| first_indexed | 2024-03-07T05:10:39Z |
| format | Journal article |
| id | oxford-uuid:db6da14d-b242-4b92-b2d1-f7f6d67acee2 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:10:39Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:db6da14d-b242-4b92-b2d1-f7f6d67acee22022-03-27T09:10:31ZHeavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decayJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:db6da14d-b242-4b92-b2d1-f7f6d67acee2EnglishSymplectic Elements at Oxford2011Bell, GBeneke, MHuber, TLi, XWe perform the two-loop matching calculation for heavy-to-light currents from QCD onto soft-collinear effective theory for the complete set of Dirac structures. The newly obtained matching coefficients enter several phenomenological applications, of which we discuss heavy-to-light form factor ratios and exclusive radiative decays, as well as the semi-inclusive decay B̄→Xsℓ+ℓ-. For this decay, we observe a significant shift of the forward-backward asymmetry zero and find q02=(3.34-0.25+0.22)GeV2 for an invariant mass cut mXcut=2.0GeV. © 2010 Elsevier B.V. |
| spellingShingle | Bell, G Beneke, M Huber, T Li, X Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay |
| title | Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay |
| title_full | Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay |
| title_fullStr | Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay |
| title_full_unstemmed | Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay |
| title_short | Heavy-to-light currents at NNLO in SCET and semi-inclusive (B)over-bar -> X(s)l(+)l(-) decay |
| title_sort | heavy to light currents at nnlo in scet and semi inclusive b over bar gt x s l l decay |
| work_keys_str_mv | AT bellg heavytolightcurrentsatnnloinscetandsemiinclusiveboverbargtxslldecay AT benekem heavytolightcurrentsatnnloinscetandsemiinclusiveboverbargtxslldecay AT hubert heavytolightcurrentsatnnloinscetandsemiinclusiveboverbargtxslldecay AT lix heavytolightcurrentsatnnloinscetandsemiinclusiveboverbargtxslldecay |