Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation
A search for CP violation in the decay Λb0 → pK−μ+μ− is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with t...
| Main Authors: | , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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Springer
2017
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| _version_ | 1826306991780265984 |
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| author | Aaij, R Adeva, B Adinolfi, M Evans, T Gandini, P Cazon, BR Hadavizadeh, T Harnew, N Hill, DRF Jalocha, PG John, MJJ Jurik, NP Malde, S Nandi, AK Rollings, A Topp-Joergensen, S Veneziano, G Wilkinson, GR LHCb Collaboration (748 Others) |
| author_facet | Aaij, R Adeva, B Adinolfi, M Evans, T Gandini, P Cazon, BR Hadavizadeh, T Harnew, N Hill, DRF Jalocha, PG John, MJJ Jurik, NP Malde, S Nandi, AK Rollings, A Topp-Joergensen, S Veneziano, G Wilkinson, GR LHCb Collaboration (748 Others) |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | A search for CP violation in the decay Λb0 → pK−μ+μ− is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb^−1. The Λb0 → pK−μ+μ− decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, ΔACP ≡ ACP(Λ0b→pK−μ+μ−) − ACP(Λ0b→pK−J/ψ) and a aT-odd/CP, where the latter is based on asymmetries in the angle between the μ+μ− and pK− decay planes. These are measured to be ΔACP = (−3.5 ±5.0(stat) ±0.2(syst))×10^−2, aT-odd/CP = (1.2 ±5.0 (stat) ±0.7 (syst))×10^−2,and no evidence for CP violation is found. |
| first_indexed | 2024-03-07T06:56:18Z |
| format | Journal article |
| id | oxford-uuid:fe41638f-99e1-4a64-af53-aa932b36ab6d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:56:18Z |
| publishDate | 2017 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:fe41638f-99e1-4a64-af53-aa932b36ab6d2022-03-27T13:35:10ZObservation of the decay Λb0 → pK−μ+μ− and a search for CP violationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fe41638f-99e1-4a64-af53-aa932b36ab6dSymplectic Elements at OxfordSpringer2017Aaij, RAdeva, BAdinolfi, MEvans, TGandini, PCazon, BRHadavizadeh, THarnew, NHill, DRFJalocha, PGJohn, MJJJurik, NPMalde, SNandi, AKRollings, ATopp-Joergensen, SVeneziano, GWilkinson, GRLHCb Collaboration (748 Others)A search for CP violation in the decay Λb0 → pK−μ+μ− is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb^−1. The Λb0 → pK−μ+μ− decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, ΔACP ≡ ACP(Λ0b→pK−μ+μ−) − ACP(Λ0b→pK−J/ψ) and a aT-odd/CP, where the latter is based on asymmetries in the angle between the μ+μ− and pK− decay planes. These are measured to be ΔACP = (−3.5 ±5.0(stat) ±0.2(syst))×10^−2, aT-odd/CP = (1.2 ±5.0 (stat) ±0.7 (syst))×10^−2,and no evidence for CP violation is found. |
| spellingShingle | Aaij, R Adeva, B Adinolfi, M Evans, T Gandini, P Cazon, BR Hadavizadeh, T Harnew, N Hill, DRF Jalocha, PG John, MJJ Jurik, NP Malde, S Nandi, AK Rollings, A Topp-Joergensen, S Veneziano, G Wilkinson, GR LHCb Collaboration (748 Others) Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation |
| title | Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation |
| title_full | Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation |
| title_fullStr | Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation |
| title_full_unstemmed | Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation |
| title_short | Observation of the decay Λb0 → pK−μ+μ− and a search for CP violation |
| title_sort | observation of the decay λb0 pk μ μ and a search for cp violation |
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