Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays

Abstract

The decays $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ are studied using a data set corresponding to an integrated luminosity of 9fb${}^{-1}$, collected with the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13TeV. The decays $B_s^0\to J/\psi K^{\ast 0}{\bar{K}}^{\ast 0}$ and $B_s^0\to {\chi }_{c1}(3872)K^{+}{K}^{-}$, where the $K^{+}{K}^{-}$ pair does not originate from a $\varphi$ meson, are observed for the first time. Precise measurements of the ratios of branching fractions between intermediate ${\chi }_{c1}(3872)\varphi$, $J/\psi K^{\ast 0}{\bar{K}}^{\ast 0}$, $\psi (2S)\varphi$ and ${\chi }_{c1}(3872)K^{+}{K}^{-}$ states are reported. A structure, denoted as $X(4740)$, is observed in the $J/\psi \varphi$ mass spectrum and, assuming a Breit-Wigner parameterisation, its mass and width are determined to be \begin{eqnarray*} m_{X(4740)} & = & 4741 \pm 6 \pm 6\,{\mathrm{MeV}}/c^2 \,, \\ Γ_{X(4740)} & = & 53 \pm 15 \pm 11\,{\mathrm{MeV}} \,, \end{eqnarray*} where the first uncertainty is statistical and the second is systematic. In addition, the most precise single measurement of the mass of the $B_s^0$ meson is performed and gives a value of $$m_{B_s^0}=5366.98\pm 0.07\pm 0.13\mathrm{MeV}/c^2.$$

arXiv comment32 pages, 10 figures; All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-035.html (LHCb public pages)"

References in corpus (56)

• A Brief Introduction to PYTHIA 8.1
• Observation of a narrow charmonium-like state in exclusive B+ -> K+ pi+pi- J/psi decays
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• 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
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• The LHCb Trigger and its Performance in 2011
• Performance of the LHCb RICH detector at the LHC
• Observation of a resonance-like structure in the pi^+- psi' mass distribution in exclusive B-->K pi^+- psi' decays
• Decay Chain Fitting with a Kalman Filter
• Observation of the resonant character of the $Z(4430{)}^{-}$ state
• Performance of the LHCb Vertex Locator
• Performance of the LHCb Outer Tracker
• Performance of the LHCb muon system
• Resonances in $J/\psi \to \varphi {\pi }^{+}{\pi }^{-}$ and $\varphi K^{+}{K}^{-}$
• Measurement of the track reconstruction efficiency at LHCb
• Observation of $J/\psi \varphi$ structures consistent with exotic states from amplitude analysis of $B^{+}\to J/\psi \varphi K^{+}$ decays
• Branching Ratio Measurements of $B_s$ Decays
• Selection and processing of calibration samples to measure the particle identification performance of the LHCb experiment in Run 2
• Experimental constraints on the spin and parity of the Z(4430)+
• Reconciling the X(3872) with the near-threshold enhancement in the D^0\bar{D}^{*0} final state
• Improved performance of the LHCb Outer Tracker in LHC Run 2
• Observation of $J/\psi$ pair production in pp collisions at $\sqrt{s}=7TeV$
• Model-independent evidence for $J/\psi p$ contributions to ${\Lambda }_b^0\to J/\psi p{K}^{-}$ decays
• Evidence for exotic hadron contributions to ${\Lambda }_b^0\to J/\psi p{\pi }^{-}$ decays
• Dalitz analysis of B --> K pi psi' decays and the Z(4430)+
• Excited heavy tetraquarks with hidden charm
• Study of the lineshape of the ${\chi }_{c1}(3872)$ state
• Amplitude analysis of $B^{+}\to J/\psi \varphi K^{+}$ decays
• Quantum numbers of the $X(3872)$ state and orbital angular momentum in its ${\rho }^{0}J\psi$ decay
• A Theory of X and Z Multiquark Resonances
• Interplay of quark and meson degrees of freedom in a near-threshold resonance: multi-channel case
• Measurement of the Λ_b^0, Ξ_b^- and Ω_b^- baryon masses
• Evidence of a new narrow resonance decaying to ${\chi }_{c1}\gamma$ in $B\to {\chi }_{c1}\gamma K$
• Precision measurement of D meson mass differences
• First observation of Bs -> J/psi f0(980) decays
• Nature of X(3872) from data
• Measurement of b-hadron masses
• Analysis of J/psi pi+ pi- and D0 D0-bar pi0 Decays of the X(3872)
• Amplitude analysis and branching fraction measurement of Bs->J/ψK+K-
• Study of beauty hadron decays into pairs of charm hadrons
• Using Line Shapes to Discriminate between Binding Mechanisms for the X(3872)
• A model-independent confirmation of the $Z(4430{)}^{-}$ state
• Resonances and $CP$ violation in $B_s^0$ and ${\overline{B}}_s^0\to J/\psi K^{+}{K}^{-}$ decays in the mass region above the $\varphi (1020)$
• Observation of the decay $B_c\to J/\psi K^{+}{K}^{-}{\pi }^{+}$
• Model-independent observation of exotic contributions to $B^0\to J/\psi K^{+}{\pi }^{-}$ decays
• Measurement of relative branching fractions of B decays to $\psi (2S)$ and $J/\psi$ mesons
• Observation of ${\Lambda }_b^0\to \psi (2S)p{K}^{-}$ and ${\Lambda }_b^0\to J/\psi {\pi }^{+}{\pi }^{-}p{K}^{-}$ decays and a measurement of the ${\Lambda }_b^0$ baryon mass
• Calibration and performance of the LHCb calorimeters in Run 1 and 2 at the LHC
• Production of $X(3872)$ Accompanied by a Pion in $B$ Meson Decay
• The X(3872) tetraquarks in B and B_s decays
• Observation of $B_{(s)}^0\to J/\psi p\overline{p}$ decays and precision measurements of the $B_{(s)}^0$ masses
• Observation of the ${\Lambda }_b^0\to {\chi }_{c1}(3872)p{K}^{-}$ decay
• Observation of the decay $\overline{B_s^0}\to {\chi }_{c2}{K}^{+}{K}^{-}$ in the $\phi$ mass region

Cited by in corpus (8)

• Observation of an exotic narrow doubly charmed tetraquark
• Heavy tetraquarks in the relativistic quark model
• Measurement of ${\chi }_{c1}(3872)$ production in proton-proton collisions at $\sqrt{s}=8$ and $13$ TeV
• Study of the $B_c^{+}$ decays into charmonia and three light hadrons
• Study of charmonium and charmonium-like contributions in $B^{+}\to J/\psi \eta K^{+}$ decays
• Bottomonium-like tetraquarks in a chiral quark model
• Study of $e^{+}{e}^{-}\to \omega X(3872)$ and $\gamma X(3872)$ from 4.66 to 4.95 GeV
• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations