Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(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 Λ(b)(0) → J/ψΛ, Ξ(b((-) → J/ψΞ(-) and Ω(b)(-) → J/ψΩ(-) signals are observed and the corresponding masses are measured to be M(Λ(b)(0))=5619.53 ± 0.13...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797067759696216064 |
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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 Alves, A Amato, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Appleby, R Aquines 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 Alves, A Amato, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Appleby, R Aquines 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 Λ(b)(0) → J/ψΛ, Ξ(b((-) → J/ψΞ(-) and Ω(b)(-) → J/ψΩ(-) signals are observed and the corresponding masses are measured to be M(Λ(b)(0))=5619.53 ± 0.13(stat.) ± 0.45(syst.) MeV/c(2), M(Ξ(b)(-)) = 5795.8 ± 0.9(stat.) ± 0.4(syst.) MeV/c(2), M(Ω(b)(-)) = 6046.0 ± 2.2(stat.) ± 0.5(syst.) MeV/c(2) , while the differences with respect to the Λ(b)(0) mass are M(Ξ(b)(-))-M(Λ(b)(0))=176.2 ± 0.9(stat.) ± 0.1(syst.) MeV/c(2), M(Ω(b)(-))-M(Λ(b)(0))=426.4 ± 2.2(stat.) ± 0.4(syst.) MeV/c(2). These are the most precise mass measurements of the Λ(b)(0), Ξ(b)(-) and Ω(b)(-) baryons to date. Averaging the above Λ(b)(0) mass measurement with that published by LHCb using 35 pb(-1) of data collected in 2010 yields M(Λ(b)(0)) = 5619.44 ± 0.13(stat.)± 0.38(syst.) MeV/c(2). |
| first_indexed | 2024-03-06T22:00:56Z |
| format | Journal article |
| id | oxford-uuid:4e8dd53d-bfc5-422c-978f-461df7567aae |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:00:56Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:4e8dd53d-bfc5-422c-978f-461df7567aae2022-03-26T16:01:59ZMeasurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4e8dd53d-bfc5-422c-978f-461df7567aaeEnglishSymplectic Elements at Oxford2013Aaij, RAbellan Beteta, CAdametz, AAdeva, BAdinolfi, MAdrover, CAffolder, AAjaltouni, ZAlbrecht, JAlessio, FAlexander, MAli, SAlkhazov, GAlvarez Cartelle, PAlves, AAmato, SAmhis, YAnderlini, LAnderson, JAndreassen, RAppleby, RAquines Gutierrez, 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 Λ(b)(0) → J/ψΛ, Ξ(b((-) → J/ψΞ(-) and Ω(b)(-) → J/ψΩ(-) signals are observed and the corresponding masses are measured to be M(Λ(b)(0))=5619.53 ± 0.13(stat.) ± 0.45(syst.) MeV/c(2), M(Ξ(b)(-)) = 5795.8 ± 0.9(stat.) ± 0.4(syst.) MeV/c(2), M(Ω(b)(-)) = 6046.0 ± 2.2(stat.) ± 0.5(syst.) MeV/c(2) , while the differences with respect to the Λ(b)(0) mass are M(Ξ(b)(-))-M(Λ(b)(0))=176.2 ± 0.9(stat.) ± 0.1(syst.) MeV/c(2), M(Ω(b)(-))-M(Λ(b)(0))=426.4 ± 2.2(stat.) ± 0.4(syst.) MeV/c(2). These are the most precise mass measurements of the Λ(b)(0), Ξ(b)(-) and Ω(b)(-) baryons to date. Averaging the above Λ(b)(0) mass measurement with that published by LHCb using 35 pb(-1) of data collected in 2010 yields M(Λ(b)(0)) = 5619.44 ± 0.13(stat.)± 0.38(syst.) MeV/c(2). |
| 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 Alves, A Amato, S Amhis, Y Anderlini, L Anderson, J Andreassen, R Appleby, R Aquines Gutierrez, O Archilli, F Artamonov, A Artuso, M Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses. |
| title | Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses. |
| title_full | Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses. |
| title_fullStr | Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses. |
| title_full_unstemmed | Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses. |
| title_short | Measurement of the Λ(b)(0), Ξ (b)(-), and Ω(b((-) Baryon masses. |
| title_sort | measurement of the λ b 0 ξ b and ω b baryon masses |
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