Observation of a new excited $D_s^{+}$ meson in $B^0\to D^{-}{D}^{+}{K}^{+}{\pi }^{-}$ decays

Abstract

Using $pp$ collision data corresponding to an integrated luminosity of $5.4{\mathrm{fb}}^{-1}$ collected with the LHCb detector at a center-of-mass energy of $13\mathrm{TeV}$, the $B^0\to D^{-}{D}^{+}{K}^{+}{\pi }^{-}$ decay is studied. A new excited $D_s^{+}$ meson is observed decaying into the $D^{+}{K}^{+}{\pi }^{-}$ final state with large statistical significance. The pole mass and width, and the spin-parity of the new state are measured with an amplitude analysis to be $m_R=2591\pm 6\pm 7\mathrm{MeV}$, ${\Gamma }_R=89\pm 16\pm 12\mathrm{MeV}$ and $J^P=0^{-}$, where the first uncertainty is statistical and the second systematic. Fit fractions for all components in the amplitude analysis are also reported. The new resonance, denoted as $D_{s0}(2590{)}^{+}$, is a strong candidate to be the $D_s(2^1{S}_0{)}^{+}$ state, the radial excitation of the pseudoscalar ground-state $D_s^{+}$ meson.

arXiv commentAll figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-034.html (LHCb public pages)

References in corpus (29)

• A Brief Introduction to PYTHIA 8.1
• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• LHCb Detector Performance
• PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
• sPlot: a statistical tool to unfold data distributions
• Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)
• Observation of a Narrow Meson Decaying to Ds+pi0 at a Mass of 2.32 GeV/c^2
• The LHCb Trigger and its Performance in 2011
• Observation of a Narrow Resonance of Mass 2.46 GeV/c^2 Decaying to D_s^*+ pi^0 and Confirmation of the D_sJ^* (2317) State
• Implications of a DK Molecule at 2.32 GeV
• Observed D_s(2317) and tentative D(2100-2300) as the charmed cousins of the light scalar nonet
• Amplitude analysis of the $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decay
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• Properties of Excited Charm and Charm-Strange Mesons
• Observation of a new D_sJ meson in B+->D0BD0K+ decays
• Comment on the new $D_s^{(\ast )+}{\pi }^0$ resonances
• Amplitude analysis of $B^{+}\to J/\psi \varphi K^{+}$ decays
• Dalitz plot analysis of $B_s^0\to {\bar{D}}^0{K}^{-}{\pi }^{+}$ decays
• Measurement of b-hadron fractions in 13 TeV pp collisions
• LHCb Topological Trigger Reoptimization
• Measurement of the Λ_b^0, Ξ_b^- and Ω_b^- baryon masses
• Observation of overlapping spin-1 and spin-3 ${\bar{D}}^0{K}^{-}$ resonances at mass $2.86\mathrm{GeV}/c^2$
• Precision measurement of D meson mass differences
• Observation of a new baryon state in the ${\Lambda }_b^0{\pi }^{+}{\pi }^{-}$ mass spectrum
• Dalitz plot analyses of $B^0\to D^{-}{D}^0{K}^{+}$ and $B^{+}\to {\overline{D}}^0{D}^0{K}^{+}$ decays
• Observation of Ds1(2536)+ -> D+pi-K+ and angular decomposition of Ds1(2536)+ -> D*+K0S
• Measurement of $f_s/f_u$ variation with proton-proton collision energy and $B$-meson kinematics
• Measurement of the mass and width of the Ds1(2536)+ meson
• Experimental status of excited $D_s^{+}$ mesons

Cited by in corpus (13)

• An updated review of the new hadron states
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Novel coupled channel framework connecting quark model and lattice QCD: an investigation on near-threshold $D_s$ states
• Mass spectra and strong decays of charmed and charmed-strange mesons
• Mixing effects on 1S and 2S state heavy mesons in the light-front quark model
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• The $D_{s0}(2590{)}^{+}$ as the dressed $c\bar{s}(2^1{S}_0)$ meson in a coupled-channels calculation
• $D_{s0}(2590)$ as a dominant $c\bar{s}$ state with a small $D^{\ast }K$ component
• First observation of the $B^{+}\to D_s^{+}{D}_s^{-}{K}^{+}$ decay
• Placing of the recently observed bottom strange state $B_{sJ}(6063)$ and $B_{sJ}(6114)$ in bottom spectra
• Radially excited (n=3)charm mesons in heavy quark effective theory
• Strong and electromagnetic decays of the radially excited $D_s$ and $B_s$ mesons in light cone QCD sum rules
• Heavy flavour production and spectroscopy