Journal article
Measurement of the properties of the Ξ∗0b baryon
- Abstract:
- We perform a search for near-threshold Ξb0 resonances decaying to Ξb−π+ in a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected by the LHCb experiment. We observe one resonant state, with the following properties: m(Ξ∗0b) − m(Ξ−b) − m(π+) = 15.727 ± 0.068(stat) ± 0.023(syst) MeV/c2 Γ(Ξ∗0b) = 0.90 ± 0.16(stat) ± 0.08(syst) MeV. This confirms the previous observation by the CMS collaboration. The state is consistent with the JP = 3/2+ Ξb∗ 0 resonance expected in the quark model. This is the most precise determination of the mass and the first measurement of the natural width of this state. We have also measured the ratio σ(pp→Ξ∗0bX)B(Ξ∗0b→Ξ−bπ+)/σ(pp → Ξ−bX) =0.28 ± 0.03(stat.) ± 0.01(syst.).
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 498.7KB, Terms of use)
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- Publisher copy:
- 10.1007/JHEP05(2016)161
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2016
- Issue:
- 5
- Pages:
- 161
- Publication date:
- 2016-05-01
- Acceptance date:
- 2016-05-10
- DOI:
- Keywords:
- Pubs id:
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pubs:661681
- UUID:
-
uuid:5a7008b4-e720-4c29-b85d-41b0b9a39512
- Local pid:
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pubs:661681
- Source identifiers:
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661681
- Deposit date:
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2016-11-24
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2016
- Notes:
- Copyright CERN, for the benefit of the LHCb Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
- Licence:
- CC Attribution (CC BY)
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