First Observation of a Baryonic B[superscript +][subscript c] Decay
A baryonic decay of the B[superscript +][subscript c] meson, B[superscript +][subscript c] → J/ψp[bar over p]π[superscript +], is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated lumi...
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| Format: | Article |
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American Physical Society (APS)
2018
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| Online Access: | http://hdl.handle.net/1721.1/117012 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
| _version_ | 1810983520514867200 |
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| author | Counts, Ian Thomas Hunt Ilten, Philip J |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Counts, Ian Thomas Hunt Ilten, Philip J |
| author_sort | Counts, Ian Thomas Hunt |
| collection | MIT |
| description | A baryonic decay of the B[superscript +][subscript c] meson, B[superscript +][subscript c] → J/ψp[bar over p]π[superscript +], is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb[superscript -1] taken at center-of-mass energies of 7 and 8 TeV. With the B[superscript +][subscript c] → J/ψπ[superscript +] decay as the normalization channel, the ratio of branching fractions is measured to be B(B[superscript +][subscript c] → J/ψp[subscript p]π[superscript +])/B(B[superscript +][subscript c] → J/ψπ[superscript +]) = 0.143 +0.039 -0.034 (stat) ± 0.013(syst). The mass of the B[superscript +][subscript c] meson is determined as M(B[superscript +][subscript c]) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c[superscript 2], using the B[superscript +][subscript c] → J/ψp[bar over p]π[superscript +] channel. |
| first_indexed | 2024-09-23T10:47:50Z |
| format | Article |
| id | mit-1721.1/117012 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:47:50Z |
| publishDate | 2018 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/1170122022-09-30T23:07:18Z First Observation of a Baryonic B[superscript +][subscript c] Decay Counts, Ian Thomas Hunt Ilten, Philip J Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Counts, Ian Thomas Hunt Ilten, Philip J A baryonic decay of the B[superscript +][subscript c] meson, B[superscript +][subscript c] → J/ψp[bar over p]π[superscript +], is observed for the first time, with a significance of 7.3 standard deviations, in pp collision data collected with the LHCb detector and corresponding to an integrated luminosity of 3.0 fb[superscript -1] taken at center-of-mass energies of 7 and 8 TeV. With the B[superscript +][subscript c] → J/ψπ[superscript +] decay as the normalization channel, the ratio of branching fractions is measured to be B(B[superscript +][subscript c] → J/ψp[subscript p]π[superscript +])/B(B[superscript +][subscript c] → J/ψπ[superscript +]) = 0.143 +0.039 -0.034 (stat) ± 0.013(syst). The mass of the B[superscript +][subscript c] meson is determined as M(B[superscript +][subscript c]) = 6274.0 ± 1.8(stat) ± 0.4(syst) MeV/c[superscript 2], using the B[superscript +][subscript c] → J/ψp[bar over p]π[superscript +] channel. National Science Foundation (U.S.) 2018-07-19T18:27:01Z 2018-07-19T18:27:01Z 2014-10 2014-07 2018-05-11T18:16:05Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/117012 Aaij, R., et al. “First Observation of a Baryonic B[superscript +][subscript c] Decay.” Physical Review Letters, vol. 113, no. 15, Oct. 2014. © 2014 CERN, for the LHCb Collaboration. https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 http://dx.doi.org/10.1103/PHYSREVLETT.113.152003 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) American Physical Society |
| spellingShingle | Counts, Ian Thomas Hunt Ilten, Philip J First Observation of a Baryonic B[superscript +][subscript c] Decay |
| title | First Observation of a Baryonic B[superscript +][subscript c] Decay |
| title_full | First Observation of a Baryonic B[superscript +][subscript c] Decay |
| title_fullStr | First Observation of a Baryonic B[superscript +][subscript c] Decay |
| title_full_unstemmed | First Observation of a Baryonic B[superscript +][subscript c] Decay |
| title_short | First Observation of a Baryonic B[superscript +][subscript c] Decay |
| title_sort | first observation of a baryonic b superscript subscript c decay |
| url | http://hdl.handle.net/1721.1/117012 https://orcid.org/0000-0002-4670-1334 https://orcid.org/0000-0001-5534-1732 |
| work_keys_str_mv | AT countsianthomashunt firstobservationofabaryonicbsuperscriptsubscriptcdecay AT iltenphilipj firstobservationofabaryonicbsuperscriptsubscriptcdecay |