Observation of the doubly charmed baryon Ξcc++.
A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is reconstructed in the decay mode pK−π+. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ++cc. The difference between the masses of...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2017
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| _version_ | 1797081143454990336 |
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| author | Aaij, R Adeva, B Adinolfi, M Bjoern, M Evans, T Gandini, P Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Pullen, H Rollings, A Topp-Joergensen, S Veneziano, G Vesterinen, M Wilkinson, G LHCb Collaboration (786 Others) |
| author_facet | Aaij, R Adeva, B Adinolfi, M Bjoern, M Evans, T Gandini, P Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Pullen, H Rollings, A Topp-Joergensen, S Veneziano, G Vesterinen, M Wilkinson, G LHCb Collaboration (786 Others) |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is reconstructed in the decay mode pK−π+. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ++cc. The difference between the masses of the Ξ++cc and Λ+c states is measured to be 1334.94±0.72(stat.)±0.27(syst.) MeV/c^2, and the Ξ++cc mass is then determined to be 3621.40±0.72(stat.)±0.27(syst.)±0.14(Λ+c) MeV/c^2, where the last uncertainty is due to the limited knowledge of the Λ+c mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb^−1, and confirmed in an additional sample of data collected at 8 TeV. |
| first_indexed | 2024-03-07T01:10:21Z |
| format | Journal article |
| id | oxford-uuid:8cca1044-e487-4bd7-9ade-7c5ff917f1af |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:10:21Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:8cca1044-e487-4bd7-9ade-7c5ff917f1af2022-03-26T22:46:58ZObservation of the doubly charmed baryon Ξcc++.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8cca1044-e487-4bd7-9ade-7c5ff917f1afEnglishSymplectic Elements at OxfordAmerican Physical Society2017Aaij, RAdeva, BAdinolfi, MBjoern, MEvans, TGandini, PGruberg Cazon, BHadavizadeh, THancock, THarnew, NHill, DJalocha, PJohn, MJurik, NMalde, SNandi, APullen, HRollings, ATopp-Joergensen, SVeneziano, GVesterinen, MWilkinson, GLHCb Collaboration (786 Others)A highly significant structure is observed in the Λ+cK−π+π+ mass spectrum, where the Λ+c baryon is reconstructed in the decay mode pK−π+. The structure is consistent with originating from a weakly decaying particle, identified as the doubly charmed baryon Ξ++cc. The difference between the masses of the Ξ++cc and Λ+c states is measured to be 1334.94±0.72(stat.)±0.27(syst.) MeV/c^2, and the Ξ++cc mass is then determined to be 3621.40±0.72(stat.)±0.27(syst.)±0.14(Λ+c) MeV/c^2, where the last uncertainty is due to the limited knowledge of the Λ+c mass. The state is observed in a sample of proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.7 fb^−1, and confirmed in an additional sample of data collected at 8 TeV. |
| spellingShingle | Aaij, R Adeva, B Adinolfi, M Bjoern, M Evans, T Gandini, P Gruberg Cazon, B Hadavizadeh, T Hancock, T Harnew, N Hill, D Jalocha, P John, M Jurik, N Malde, S Nandi, A Pullen, H Rollings, A Topp-Joergensen, S Veneziano, G Vesterinen, M Wilkinson, G LHCb Collaboration (786 Others) Observation of the doubly charmed baryon Ξcc++. |
| title | Observation of the doubly charmed baryon Ξcc++. |
| title_full | Observation of the doubly charmed baryon Ξcc++. |
| title_fullStr | Observation of the doubly charmed baryon Ξcc++. |
| title_full_unstemmed | Observation of the doubly charmed baryon Ξcc++. |
| title_short | Observation of the doubly charmed baryon Ξcc++. |
| title_sort | observation of the doubly charmed baryon ξcc |
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