Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ
We report the observation of the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ based on 342 fb[superscript -1] of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e[superscript +]e[superscript -] storage rings at SLAC. A simul...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2011
|
| Online Access: | http://hdl.handle.net/1721.1/67319 https://orcid.org/0000-0002-8667-5660 |
| _version_ | 1811096881936203776 |
|---|---|
| author | Dujmic, Denis Sciolla, Gabriella Zhao, M. Fisher, Peter H Cowan, Ray F |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Dujmic, Denis Sciolla, Gabriella Zhao, M. Fisher, Peter H Cowan, Ray F |
| author_sort | Dujmic, Denis |
| collection | MIT |
| description | We report the observation of the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ based on 342 fb[superscript -1] of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e[superscript +]e[superscript -] storage rings at SLAC. A simultaneous fit to three D[subscript s][superscript +] decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ)=[6.13[subscript -1.03][superscript +1.04](stat)±0.43(syst)±0.51(B(D[subscript s]))]×10[superscript -4], where the last error reflects the limited knowledge of the D[subscript s] branching fractions. |
| first_indexed | 2024-09-23T16:50:30Z |
| format | Article |
| id | mit-1721.1/67319 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:50:30Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/673192023-02-26T10:42:26Z Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ Dujmic, Denis Sciolla, Gabriella Zhao, M. Fisher, Peter H Cowan, Ray F Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Fisher, Peter H. Fisher, Peter H. Cowan, Ray Franklin Dujmic, Denis Sciolla, Gabriella Zhao, M. We report the observation of the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ based on 342 fb[superscript -1] of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e[superscript +]e[superscript -] storage rings at SLAC. A simultaneous fit to three D[subscript s][superscript +] decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B[superscript -]→D[subscript s][superscript (*)+]K[superscript -]ℓ[superscript -]ν̅ ℓ)=[6.13[subscript -1.03][superscript +1.04](stat)±0.43(syst)±0.51(B(D[subscript s]))]×10[superscript -4], where the last error reflects the limited knowledge of the D[subscript s] branching fractions. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2011-11-30T18:35:51Z 2011-11-30T18:35:51Z 2011-01 2010-12 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/67319 del Amo Sanchez, P. et al. “Observation of the Decay B^{-}→D_{s}^{(*)+}K^{-}ℓ^{-}ν[over ¯]_{ℓ}.” Physical Review Letters 107 (2011): n. pag. Web. 30 Nov. 2011. © 2011 American Physical Society https://orcid.org/0000-0002-8667-5660 en_US http://dx.doi.org/10.1103/PhysRevLett.107.041804 Physical Review Letters 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. Fisher, Peter H Cowan, Ray F Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ |
| title | Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ |
| title_full | Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ |
| title_fullStr | Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ |
| title_full_unstemmed | Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ |
| title_short | Observation of the Decay B-→Ds(*)+K-ℓ-ν̅ ℓ |
| title_sort | observation of the decay b ds k l ν̅ l |
| url | http://hdl.handle.net/1721.1/67319 https://orcid.org/0000-0002-8667-5660 |
| work_keys_str_mv | AT dujmicdenis observationofthedecaybdsklnl AT sciollagabriella observationofthedecaybdsklnl AT zhaom observationofthedecaybdsklnl AT fisherpeterh observationofthedecaybdsklnl AT cowanrayf observationofthedecaybdsklnl |