Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub|
We report the results of a study of the exclusive charmless semileptonic decays, B[superscript +]→η[superscript (′)]ℓ[superscript +]ν and B[superscript 0]→π[superscript -]ℓ[superscript +]ν, undertaken with approximately 464×10[superscript 6] BB̅ pairs collected at the Υ(4S) resonance with the BABAR...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/67482 |
| _version_ | 1811089330349801472 |
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| author | Dujmic, Denis Sciolla, Gabriella Zhao, M. Cowan, Ray F |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Dujmic, Denis Sciolla, Gabriella Zhao, M. Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We report the results of a study of the exclusive charmless semileptonic decays, B[superscript +]→η[superscript (′)]ℓ[superscript +]ν and B[superscript 0]→π[superscript -]ℓ[superscript +]ν, undertaken with approximately 464×10[superscript 6] BB̅ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B[superscript +]→ηℓ[superscript +]ν and B[superscript 0]→π-ℓ[superscript +]ν decays in three and 12 bins of q[superscript 2], respectively, from which we extract the f+(q[superscript 2]) form-factor shapes and the total branching fractions B(B[superscript +]→ηℓ[superscript +]ν)=(0.36±0.05[subscript stat]±0.04[subscript syst])×10[superscript -4] and B(B[superscript 0]→π[superscript -]ℓ[superscript +]ν)=(1.42±0.05[subscript stat]±0.07[subscript syst])×10[superscript -4]. We also measure B(B[superscript +]→η[superscript ′]ℓ[superscript +]ν)=(0.24±0.08[subscript stat]±0.03[subscript syst])×10[superscript -4]. We obtain values for the magnitude of the CKM matrix element |V[subscript ub]| using three different QCD calculations. |
| first_indexed | 2024-09-23T14:17:30Z |
| format | Article |
| id | mit-1721.1/67482 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:17:30Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/674822023-02-26T09:55:42Z Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| Dujmic, Denis Sciolla, Gabriella Zhao, M. Cowan, Ray F Massachusetts Institute of Technology. Laboratory for Nuclear Science Cowan, Ray Franklin Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella Zhao, M. We report the results of a study of the exclusive charmless semileptonic decays, B[superscript +]→η[superscript (′)]ℓ[superscript +]ν and B[superscript 0]→π[superscript -]ℓ[superscript +]ν, undertaken with approximately 464×10[superscript 6] BB̅ pairs collected at the Υ(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with a loose neutrino reconstruction technique. We obtain partial branching fractions for B[superscript +]→ηℓ[superscript +]ν and B[superscript 0]→π-ℓ[superscript +]ν decays in three and 12 bins of q[superscript 2], respectively, from which we extract the f+(q[superscript 2]) form-factor shapes and the total branching fractions B(B[superscript +]→ηℓ[superscript +]ν)=(0.36±0.05[subscript stat]±0.04[subscript syst])×10[superscript -4] and B(B[superscript 0]→π[superscript -]ℓ[superscript +]ν)=(1.42±0.05[subscript stat]±0.07[subscript syst])×10[superscript -4]. We also measure B(B[superscript +]→η[superscript ′]ℓ[superscript +]ν)=(0.24±0.08[subscript stat]±0.03[subscript syst])×10[superscript -4]. We obtain values for the magnitude of the CKM matrix element |V[subscript ub]| using three different QCD calculations. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2011-12-08T18:44:59Z 2011-12-08T18:44:59Z 2011-03 2010-10 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/67482 del Amo Sanchez, P. et al. “Measurement of the B^{0}→π^{-}ℓ^{+}ν and B^{+}→η^{(′)}ℓ^{+}ν branching fractions, the B^{0}→π^{-}ℓ^{+}ν and B^{+}→ηℓ^{+}ν form-factor shapes, and determination of |V_{ub}|.” Physical Review D 83 (2011): n. pag. Web. 8 Dec. 2011. © 2011 American Physical Society en_US http://dx.doi.org/10.1103/PhysRevD.83.052011 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 | Dujmic, Denis Sciolla, Gabriella Zhao, M. Cowan, Ray F Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| |
| title | Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| |
| title_full | Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| |
| title_fullStr | Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| |
| title_full_unstemmed | Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| |
| title_short | Measurement of the B0→π-ℓ+ν and B+→η(′)ℓ+ν branching fractions, the B0→π-ℓ+ν and B+→ηℓ+ν form-factor shapes, and determination of |Vub| |
| title_sort | measurement of the b0 π l ν and b η l ν branching fractions the b0 π l ν and b ηl ν form factor shapes and determination of vub |
| url | http://hdl.handle.net/1721.1/67482 |
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