Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses
Bottom baryons decaying to a J/ψ meson and a hyperon are reconstructed using 1.0 fb-1 of data collected in 2011 with the LHCb detector. Significant Λb0→J/ψΛ, Ξb-→J/ψΞ- and Ωb-→J/ψΩ- signals are observed and the corresponding masses are measured to be M(Λb0)=5619.53±0.13(stat.) ±0.45(syst.) MeV/c2, M...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1826301164938854400 |
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| author | Aaij, R Abellan Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_facet | Aaij, R Abellan Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | Bottom baryons decaying to a J/ψ meson and a hyperon are reconstructed using 1.0 fb-1 of data collected in 2011 with the LHCb detector. Significant Λb0→J/ψΛ, Ξb-→J/ψΞ- and Ωb-→J/ψΩ- signals are observed and the corresponding masses are measured to be M(Λb0)=5619.53±0.13(stat.) ±0.45(syst.) MeV/c2, M(Ξb-)=5795.8±0.9(stat.)±0.4(syst.) MeV/c2, M(Ωb-)=6046.0±2.2(stat.)±0.5(syst.) MeV/c2, while the differences with respect to the Λb0 mass are M(Ξb-)-M(Λb0)= 176.2±0.9(stat.)±0.1(syst.) MeV/c2, M(Ωb-)-M(Λb0)= 426.4±2.2(stat.)±0.4(syst.) MeV/c2. These are the most precise mass measurements of the Λb0, Ξb- and Ωb- baryons to date. Averaging the above Λb0 mass measurement with that published by LHCb using 35 pb-1 of data collected in 2010 yields M(Λb0)=5619. 44±0.13(stat.)±0.38(syst.) MeV/c2. © 2013 CERN. Published by the American Physical Society under the terms of the. |
| first_indexed | 2024-03-07T05:28:15Z |
| format | Journal article |
| id | oxford-uuid:e14b8ca6-f37b-473c-97dc-fabd8d1f0044 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:28:15Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:e14b8ca6-f37b-473c-97dc-fabd8d1f00442022-03-27T09:53:32ZMeasurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon MassesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e14b8ca6-f37b-473c-97dc-fabd8d1f0044EnglishSymplectic Elements at Oxford2013Aaij, RAbellan Beteta, CAdametz, AAdeva, BAdinolfi, MAdrover, CAffolder, AAjaltouni, ZAlbrecht, JAlessio, FAlexander, MAli, SAlkhazov, GAlvarez Cartelle, PJr, AAmato, SAmhis, YAnderlini, LAnderson, JAndreassen, RAppleby, RGutierrez, OArchilli, FArtamonov, AArtuso, MBottom baryons decaying to a J/ψ meson and a hyperon are reconstructed using 1.0 fb-1 of data collected in 2011 with the LHCb detector. Significant Λb0→J/ψΛ, Ξb-→J/ψΞ- and Ωb-→J/ψΩ- signals are observed and the corresponding masses are measured to be M(Λb0)=5619.53±0.13(stat.) ±0.45(syst.) MeV/c2, M(Ξb-)=5795.8±0.9(stat.)±0.4(syst.) MeV/c2, M(Ωb-)=6046.0±2.2(stat.)±0.5(syst.) MeV/c2, while the differences with respect to the Λb0 mass are M(Ξb-)-M(Λb0)= 176.2±0.9(stat.)±0.1(syst.) MeV/c2, M(Ωb-)-M(Λb0)= 426.4±2.2(stat.)±0.4(syst.) MeV/c2. These are the most precise mass measurements of the Λb0, Ξb- and Ωb- baryons to date. Averaging the above Λb0 mass measurement with that published by LHCb using 35 pb-1 of data collected in 2010 yields M(Λb0)=5619. 44±0.13(stat.)±0.38(syst.) MeV/c2. © 2013 CERN. Published by the American Physical Society under the terms of the. |
| spellingShingle | Aaij, R Abellan Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Alvarez Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses |
| title | Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses |
| title_full | Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses |
| title_fullStr | Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses |
| title_full_unstemmed | Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses |
| title_short | Measurement of the Lambda(0)(b), Xi(-)(b), and Omega(-)(b) Baryon Masses |
| title_sort | measurement of the lambda 0 b xi b and omega b baryon masses |
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