Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω
We report updated branching fraction measurements of the color-suppressed decays B̅ 0-->D0π0, D*0π0, D0η, D*0η, D0ω, D*0ω, D0η′, and D*0η′. We measure the branching fractions (×10-4): B(B̅ 0→D0π0)=2.69±0.09±0.13, B(B̅ 0-->D*0π0)=3.05±0.14±0.28, B(B̅ 0→D0η)=2.53±0.09±0.11, B(B̅ 0→D*0η)=2.69±0.1...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/70004 |
| _version_ | 1826211407089106944 |
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| author | Dujmic, Denis Sciolla, Gabriella 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 Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We report updated branching fraction measurements of the color-suppressed decays B̅ 0-->D0π0, D*0π0, D0η, D*0η, D0ω, D*0ω, D0η′, and D*0η′. We measure the branching fractions (×10-4): B(B̅ 0→D0π0)=2.69±0.09±0.13, B(B̅ 0-->D*0π0)=3.05±0.14±0.28, B(B̅ 0→D0η)=2.53±0.09±0.11, B(B̅ 0→D*0η)=2.69±0.14±0.23, B(B̅ 0-->D0ω)=2.57±0.11±0.14, B(B̅ 0-->D*0ω)=4.55±0.24±0.39, B(B̅ 0-->D0η′)=1.48±0.13±0.07, and B(B̅ 0-->D*0η′)=1.49±0.22±0.15. We also present the first measurement of the longitudinal polarization fraction of the decay channel D*0ω, fL=(66.5±4.7±1.5)%. In the above, the first uncertainty is statistical and the second is systematic. The results are based on a sample of (454±5)×106 BB̅ pairs collected at the Υ(4S) resonance, with the BABAR detector at the PEP-II storage rings at SLAC. The measurements are the most precise determinations of these quantities from a single experiment. They are compared to theoretical predictions obtained by factorization, Soft Collinear Effective Theory (SCET) and perturbative QCD (pQCD). We find that the presence of final state interactions is favored and the measurements are in better agreement with SCET than with pQCD. |
| first_indexed | 2024-09-23T15:05:23Z |
| format | Article |
| id | mit-1721.1/70004 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:05:23Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/700042023-02-26T05:29:36Z Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω Branching fraction measurements of the color-suppressed decays B̅ 0 to D(*)0π0, D(*)0η, D(*)0ω, and D(*)0η′ and measurement of the polarization in the decay B̅ 0→D*0ω Dujmic, Denis Sciolla, Gabriella Cowan, Ray F Massachusetts Institute of Technology. Laboratory for Nuclear Science Sciolla, Gabriella Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella We report updated branching fraction measurements of the color-suppressed decays B̅ 0-->D0π0, D*0π0, D0η, D*0η, D0ω, D*0ω, D0η′, and D*0η′. We measure the branching fractions (×10-4): B(B̅ 0→D0π0)=2.69±0.09±0.13, B(B̅ 0-->D*0π0)=3.05±0.14±0.28, B(B̅ 0→D0η)=2.53±0.09±0.11, B(B̅ 0→D*0η)=2.69±0.14±0.23, B(B̅ 0-->D0ω)=2.57±0.11±0.14, B(B̅ 0-->D*0ω)=4.55±0.24±0.39, B(B̅ 0-->D0η′)=1.48±0.13±0.07, and B(B̅ 0-->D*0η′)=1.49±0.22±0.15. We also present the first measurement of the longitudinal polarization fraction of the decay channel D*0ω, fL=(66.5±4.7±1.5)%. In the above, the first uncertainty is statistical and the second is systematic. The results are based on a sample of (454±5)×106 BB̅ pairs collected at the Υ(4S) resonance, with the BABAR detector at the PEP-II storage rings at SLAC. The measurements are the most precise determinations of these quantities from a single experiment. They are compared to theoretical predictions obtained by factorization, Soft Collinear Effective Theory (SCET) and perturbative QCD (pQCD). We find that the presence of final state interactions is favored and the measurements are in better agreement with SCET than with pQCD. Alfred P. Sloan Foundation National Science Foundation (U.S.) United States. Dept. of Energy 2012-04-12T18:45:00Z 2012-04-12T18:45:00Z 2011-12 2011-07 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/70004 Lees, J. et al. “Branching Fraction Measurements of the Color-suppressed Decays B[over ¯]^{0} to D^{(*)0}π^{0}, D^{(*)0}η, D^{(*)0}ω, and D^{(*)0}η^{′} and Measurement of the Polarization in the Decay B[over ¯]^{0}→D^{*0}ω.” Physical Review D 84.11 (2011): [25 pages]. Web. en_US http://dx.doi.org/10.1103/PhysRevD.84.112007 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 Cowan, Ray F Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω |
| title | Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω |
| title_full | Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω |
| title_fullStr | Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω |
| title_full_unstemmed | Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω |
| title_short | Branching fraction measurements of the color-suppressed decays B[over-bar] 0 to D[superscript (*)0π0, D[superscript (*)0]η, D[superscript (*)0]ω, and D[superscript(*)0]η′ and measurement of the polarization in the decay B[over-bar] 0-->D[superscript *0]ω |
| title_sort | branching fraction measurements of the color suppressed decays b over bar 0 to d superscript 0π0 d superscript 0 η d superscript 0 ω and d superscript 0 η and measurement of the polarization in the decay b over bar 0 d superscript 0 ω |
| url | http://hdl.handle.net/1721.1/70004 |
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