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Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Collaboration, CMS | - |
dc.date.accessioned | 2020-02-14T16:19:27Z | - |
dc.date.available | 2020-02-14T16:19:27Z | - |
dc.date.issued | 2020 | - |
dc.identifier | http://arxiv.org/abs/2001.06533v1 | - |
dc.identifier | http://arxiv.org/abs/2001.06533v1 | - |
dc.identifier.issn | http://arxiv.org/abs/2001.06533v1 | - |
dc.identifier.issn | http://arxiv.org/abs/2001.06533v1 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/20307 | - |
dc.description.abstract | A study of excited $\Lambda_\mathrm{b}^0$ baryons is reported, based on a data sample collected in 2016-2018 with the CMS detector at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of up to 140 fb$^{-1}$. The existence of four excited $\Lambda_\mathrm{b}^0$ states: $\Lambda_\mathrm{b}$(5912)$^0$, $\Lambda_\mathrm{b}$(5920)$^0$, $\Lambda_\mathrm{b}$(6146)$^0$, and $\Lambda_\mathrm{b}$(6152)$^0$ in the $\Lambda_\mathrm{b}^0\pi^+\pi^-$ mass spectrum is confirmed, and their masses are measured. The $\Lambda_\mathrm{b}^0\pi^+\pi^-$ mass distribution exhibits a broad excess of events in the region of 6040-6100 MeV, whose origin cannot be discerned with the present data. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | hep-ex | en_US |
dc.title | Study of excited $Λ_\mathrm{b}^0$ states decaying to $Λ_\mathrm{b}^0π^+π^-$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV | en_US |
dc.type | Article | en_US |
pubs.notes | Submitted to PLB. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/BPH-19-003 (CMS Public Pages) | - |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
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