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pmid: 34241504
handle: 10486/702511 , 10261/260392 , 10651/61707 , 11588/986883 , 10281/475840 , 10446/186584 , 10679/8233 , 10067/1798230151162165141 , 11449/233210 , 11492/5087 , 10831/110974 , 11486/5494 , 11577/3400577 , 11573/1627631 , 11584/420566 , 11567/1058094 , 11568/1105958 , 11589/257782 , 11384/141503 , 11585/859925 , 20.500.11769/526767 , 2158/1297779 , 1854/LU-8754166 , 2318/1846138 , 11571/1477976 , 11563/158993 , 11586/376645 , 11579/135074 , 10044/1/90286
pmid: 34241504
handle: 10486/702511 , 10261/260392 , 10651/61707 , 11588/986883 , 10281/475840 , 10446/186584 , 10679/8233 , 10067/1798230151162165141 , 11449/233210 , 11492/5087 , 10831/110974 , 11486/5494 , 11577/3400577 , 11573/1627631 , 11584/420566 , 11567/1058094 , 11568/1105958 , 11589/257782 , 11384/141503 , 11585/859925 , 20.500.11769/526767 , 2158/1297779 , 1854/LU-8754166 , 2318/1846138 , 11571/1477976 , 11563/158993 , 11586/376645 , 11579/135074 , 10044/1/90286
The Ξ$\substack{-\\b}$π$^{+}$π$^{-}$ invariant mass spectrum is investigated with an event sample of proton-proton collisions at √s=13 TeV, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 140 fb$^{-1}$. The ground state Ξ$\substack{-\\b}$ is reconstructed via its decays to J/ψΞ$^{-}$ and J/ψΛK$^{-}$. A narrow resonance, labeled Ξ$_{b}$ (6100) $^{-}$, is observed at a Ξ$\substack{-\\b}$ π$^{+}$π$^{-}$ invariant mass of 6100.3±0.2(stat)±0.1(syst)±0.6(Ξ$\substack{-\\b}$) MeV, where the last uncertainty reflects the precision of the Ξ$\substack{-\\b}$ baryon mass. The upper limit on the Ξ$_{b}$(6100)$^{-}$ natural width is determined to be 1.9 MeV at 95% confidence level. The low Ξ$_{b}$(6100)$^{-}$ signal yield observed in data does not allow a measurement of the quantum numbers of the new state. However, following analogies with the established excited Ξ$_{c}$ baryon states, the new Ξ$_{b}$ (6100)$^{-}$ resonance and its decay sequence are consistent with the orbitally excited Ξ$\substack{-\\b}$ baryon, with spin and parity quantum numbers JP=3/2$^{-}$.
top: single production, 09 Engineering, high energy physics, Ground state; Hadrons; Mass spectrometry, Universal Monte-Carlo, Integrated Luminosity, UNIVERSAL MONTE-CARLO, Hadron-Hadron scattering (experiments), tracking detector, Qed Radiative-Corrections, LHC, CMS, pp interactions, info:eu-repo/classification/ddc/530, Confidence Levels, radiation: damage, Photos, 02 Physical Sciences, hadron colliders, Heavy Baryons, CMS, Physics, ddc:530, Si microstrip and pad detectors, LHC CMS, bottom baryons, Top physics, Particle tracking detectors (Solid-state detectors), High energy physics ; Experimental particle physics ; LHC ; CMS ; Radiation-hard detectors ; Si microstrip and pad detectors ; Radiation damage to detector materials (solid state) ; Particle tracking detectors (Solid-state detectors) ; radiation: damage ; CMS: upgrade ; tracking detector ; semiconductor detector: design ; semiconductor detector: microstrip ; performance ; Hadron-Hadron scattering (experiments) ; Top physics ; p p: scattering ; p p: colliding beams ; top: single production, HEAVY BARYONS, CMS Collaboration, semiconductor detector: microstrip, LHC, PHOTOS, performance, Radiation-hard detectors, General Physics, p p: scattering, Narrow Resonances, 530, Bottom baryons; Hadron colliders; Particles & Fields, Onia, High Energy Physics Experiments; CMS; b quark resonance, High energy physics, Invariant Mass, QED RADIATIVE-CORRECTIONS, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, 01 Mathematical Sciences, Radiation damage to detector materials (solid state), hep-ex, Signal Yields, Física, MODEL, Physics and Astronomy, Proton Proton Collisions, Quantum Numbers, Invariant-Mass Spectra, Experimental particle physics, p p: colliding beams, Hadron - hadron collision, Model, CMS: upgrade, semiconductor detector: design
top: single production, 09 Engineering, high energy physics, Ground state; Hadrons; Mass spectrometry, Universal Monte-Carlo, Integrated Luminosity, UNIVERSAL MONTE-CARLO, Hadron-Hadron scattering (experiments), tracking detector, Qed Radiative-Corrections, LHC, CMS, pp interactions, info:eu-repo/classification/ddc/530, Confidence Levels, radiation: damage, Photos, 02 Physical Sciences, hadron colliders, Heavy Baryons, CMS, Physics, ddc:530, Si microstrip and pad detectors, LHC CMS, bottom baryons, Top physics, Particle tracking detectors (Solid-state detectors), High energy physics ; Experimental particle physics ; LHC ; CMS ; Radiation-hard detectors ; Si microstrip and pad detectors ; Radiation damage to detector materials (solid state) ; Particle tracking detectors (Solid-state detectors) ; radiation: damage ; CMS: upgrade ; tracking detector ; semiconductor detector: design ; semiconductor detector: microstrip ; performance ; Hadron-Hadron scattering (experiments) ; Top physics ; p p: scattering ; p p: colliding beams ; top: single production, HEAVY BARYONS, CMS Collaboration, semiconductor detector: microstrip, LHC, PHOTOS, performance, Radiation-hard detectors, General Physics, p p: scattering, Narrow Resonances, 530, Bottom baryons; Hadron colliders; Particles & Fields, Onia, High Energy Physics Experiments; CMS; b quark resonance, High energy physics, Invariant Mass, QED RADIATIVE-CORRECTIONS, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, 01 Mathematical Sciences, Radiation damage to detector materials (solid state), hep-ex, Signal Yields, Física, MODEL, Physics and Astronomy, Proton Proton Collisions, Quantum Numbers, Invariant-Mass Spectra, Experimental particle physics, p p: colliding beams, Hadron - hadron collision, Model, CMS: upgrade, semiconductor detector: design
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