Model-independent evidence for $J/\psi p$ contributions to ${\Lambda }_b^0\to J/\psi p{K}^{-}$ decays

Abstract

The data sample of ${\Lambda }_b^0\to J/\psi p{K}^{-}$ decays acquired with the LHCb detector from 7 and 8~TeV $pp$ collisions, corresponding to an integrated luminosity of 3 fb${}^{-1}$, is inspected for the presence of $J/\psi p$ or $J/\psi K^{-}$ contributions with minimal assumptions about $K^{-}p$ contributions. It is demonstrated at more than 9 standard deviations that ${\Lambda }_b^0\to J/\psi p{K}^{-}$ decays cannot be described with $K^{-}p$ contributions alone, and that $J/\psi p$ contributions play a dominant role in this incompatibility. These model-independent results support the previously obtained model-dependent evidence for $P_c^{+}\to J/\psi p$ charmonium-pentaquark states in the same data sample.

arXiv comment21 pages, 12 figures (including the supplemental section added at the end)

References in corpus (12)

• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• sPlot: a statistical tool to unfold data distributions
• The light baryon spectrum in a relativistic quark model with instanton-induced quark forces I. The non-strange baryon spectrum and ground-states
• Search for the Z(4430)^- at BABAR
• The light baryon spectrum in a relativistic quark model with instanton-induced quark forces II. The strange baryon spectrum
• Evidence for exotic hadron contributions to ${\Lambda }_b^0\to J/\psi p{\pi }^{-}$ decays
• QCD with Two Light Dynamical Chirally Improved Quarks: Baryons
• Strange and nonstrange baryon spectra in the relativistic interacting quark-diquark model with a Gürsey and Radicati-inspired exchange interaction
• Strange baryon spectroscopy in the relativistic quark model
• Quark-Model Identification of Baryon Ground and Resonant States
• Coupled-Channel Model for $\bar{K}N$ Scattering in the Resonant Region
• A model-independent confirmation of the $Z(4430{)}^{-}$ state

Cited by in corpus (103)

• The $XYZ$ states: experimental and theoretical status and perspectives
• Multiquark Resonances
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• Observation of structure in the $J/\psi$-pair mass spectrum
• Evidence of a $J/\psi \Lambda$ structure and observation of excited ${\Xi }^{-}$ states in the ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ decay
• Multiquark States
• Exotic hadrons: review and perspectives
• Model-independent study of structure in $B^{+}\to D^{+}{D}^{-}{K}^{+}$ decays
• Evidence for exotic hadron contributions to ${\Lambda }_b^0\to J/\psi p{\pi }^{-}$ decays
• Exploring the molecular scenario of $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$
• Heavy-flavored tetraquark states with the $QQ\bar{Q}\bar{Q}$ configuration
• Tetra- and penta-quark structures in the constituent quark model
• QCD Sum Rules Approach to the $X,Y$ and $Z$ States
• Compact pentaquark structures
• Molecular Interpretation of the $P_c(4440)$ and $P_c(4457)$ States
• $P_c(4457{)}^{+}$, $P_c(4440{)}^{+}$, and $P_c(4312{)}^{+}$: molecules or compact pentaquarks?
• Interpretation of the LHCb Pc(4312) Signal
• On LHCb pentaquarks as a baryon-psi(2S) bound state -- prediction of isospin 3/2 pentaquarks with hidden charm
• Remarks on the $P_c$ structures and triangle singularities
• $P_c$ pentaquarks with chiral tensor and quark dynamics
• Magnetic moments of the hidden-charm pentaquark states
• Hadro-quarkonium from Lattice QCD
• Analysis of the ${\frac{1}{2}}^{\pm }$ pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
• Hidden-charm and bottom meson-baryon molecules coupled with five-quark states
• Molecular nature of $P_{cs}(4459)$ and its heavy quark spin partners
• Hidden-charm pentaquarks as a meson-baryon molecule with coupled channels for ${\bar{D}}^{(\ast )}{\Lambda }_{\mathrm{c}}$ and ${\bar{D}}^{(\ast )}{\Sigma }_{\mathrm{c}}^{(\ast )}$
• Some decay properties of hidden-charm pentaquarks as baryon-meson molecules
• Coupled-channel effects of the ${\Sigma }_c^{(\ast )}{\bar{D}}^{(\ast )}$-${\Lambda }_c(2595)\bar{D}$ system and molecular nature of the $P_c$ pentaquark states from one-boson exchange model
• Hidden-charm pentaquarks and their hidden-bottom and $B_c$-like partner states
• Structure and decays of hidden heavy pentaquarks
• The hidden charm pentaquarks are the hidden color-octet $uud$ baryons?
• Hidden charm pentaquarks: mass spectrum, magnetic moments, and photocouplings
• Nucleon-$J/\psi$ and nucleon-${\eta }_c$ scattering in $P_c$ pentaquark channels from LQCD
• Observation of the decays ${\Lambda }_b^0\to {\chi }_{c1}p{K}^{-}$ and ${\Lambda }_b^0\to {\chi }_{c2}p{K}^{-}$
• Fully heavy pentaquarks
• Effective field theory for the nucleon-quarkonium interaction
• Hidden Charm Pentaquark $P_c(4380)$ and Doubly Charmed Baryon ${\Xi }_{cc}^{\ast }(4380)$ as Hadronic Molecule States
• How to reveal the nature of three or more pentaquark states?
• Dalitz-plot decomposition for three-body decays
• Double Polarization Observables in Pentaquark Photoproduction
• Heavy Baryons and their Exotics from Instantons in Holographic QCD
• Triply heavy tetraquark states with the $QQ\bar{Q}\bar{q}$ configuration
• Analysis of the $\bar{D}{\Sigma }_c$, $\bar{D}{\Sigma }_c^{\ast }$, ${\bar{D}}^{\ast }{\Sigma }_c$ and ${\bar{D}}^{\ast }{\Sigma }_c^{\ast }$ pentaquark molecular states with QCD sum rules
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Spectrum of the doubly charmed molecular pentaquarks in chiral effective field theory
• Doubly charmed ${\Xi }_{cc}$ molecular states from meson-baryon interaction
• Production of $P_c$ states in ${\Lambda }_b$ decays
• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Observation of the ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ decay
• Anticharmed strange pentaquarks from the one-boson-exchange model
• Fully heavy pentaquark states in constituent quark model
• Heavy flavor pentaquarks with four heavy quarks
• Heavy and Strange Holographic Baryons
• Heavy Holographic Exotics: Tetraquarks as Efimov States
• $P_c$ Resonances in the Compact Pentaquark Picture
• Heavy baryons in a pion mean-field approach: A brief review
• Production of hidden-charm strange pentaquarks $P_{cs}$ from the $K^{-}p\to J/\psi \Lambda$ reaction
• $P_c$ states and their open-charm decays with the complex scaling method
• Observation of $B_{(s)}^0\to J/\psi p\overline{p}$ decays and precision measurements of the $B_{(s)}^0$ masses
• Where are the hidden-charm hexaquarks?
• Heavy quark spin multiplet structure of $P_c$-like pentaquark as P-wave hadronic molecular state
• Hidden-charm Hexaquarks from Lattice QCD
• Holographic heavy-baryons in the Witten-Sakai-Sugimoto model with the D0-D4 background
• Study of the B${}^{+}$ $\to$ J$/\psi \overline{\Lambda }$p decay in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Determination of $J/\psi$ chromoelectric polarizability from lattice data
• Heavy quark spin multiplet structure of ${\bar{P}}^{(\ast )}{\Sigma }_Q^{(\ast )}$ molecular states
• $T_{bbb}$: a three $B-$meson bound state
• On tetraquarks with hidden charm and strangeness as phi-psi(2S) hadrocharmonium
• Width of a two-body coupled-channel resonance
• $J/\psi N$ interactions revisited and ${\Lambda }_b^0\to J/\psi K^{-}({\pi }^{-})p$ decays
• Hidden strange pentaquark in constituent quark models
• Hidden-charm Pentaquark Production at $e^{+}{e}^{-}$ Colliders
• Hidden-Bottom Pentaquarks: Mass Spectrum, Magnetic Moments and Partial Widths
• Search for prompt production of pentaquarks in charm hadron final states
• Binding of the three-hadron $D{D}^{\ast }K$ system from the lattice effective field theory
• Spectroscopic Analysis of Hidden-Charm Pentaquarks
• Holographic three flavor baryon in the Witten-Sakai-Sugimoto model with the D0-D4 background
• Feasibility study of the $K^{+}d\to K^{0}pp$ reaction for the "${\Theta }^{+}$" pentaquark
• $P_c(4457)$ interpreted as a $J^P=1/2^{+}$ state by ${\bar{D}}^0{\Lambda }_c^{+}(2595)$-${\pi }^0{P}_c(4312)$ interaction
• Hidden-charm pentaquark formation in antiproton - deuterium collisions
• First observation of ${\Lambda }_b^0\to {\Sigma }_c^{(\ast )++}{D}^{(\ast )-}{K}^{-}$ decays
• Thermal production of sexaquarks in heavy-ion collisions
• Investigate the pentaquark resonance in the $NK$ system
• Study of the resonance contributions in the ${\Xi }_b^{-}\to p{K}^{-}{K}^{-}$ decay
• Pentaquarks in semileptonic ${\Lambda }_b$ decays
• Heavy baryon production with an instanton interaction
• Study of the hidden charm pentaquarks ${\Lambda }_{c\bar{c}}$ above $4$ GeV
• Observation of ${\Lambda }_b^0\to {\Lambda }_c^{+}{\bar{D}}^{(\ast )0}{K}^{-}$ and ${\Lambda }_b^0\to {\Lambda }_c^{+}{D}_s^{\ast -}$ decays
• Charmonium and exotics from lattice QCD
• Searches for Exotic Hadrons at GlueX
• First observation of the ${\Lambda }_b^0\to {\Lambda }_c^{+}{D}_s^{-}{K}^{+}{K}^{-}$ decay and search for pentaquarks in the ${\Lambda }_c^{+}{D}_s^{-}$ system
• Lattice QCD Study of the Nucleon-Charmonium Interaction
• Pentaquark photoproduction
• Exotic hadron spectroscopy at the LHCb experiment
• The study of doubly charmed pentaquark $cc\bar{q}qq$ with the SU(3) symmetry
• Pentaquark states with hidden charm
• Study of Fully heavy Pentaquarks using extended Gursey-Radicati formalism
• Hadron Spectroscopy, exotics and $B_c^{+}$ physics at LHCb
• $N^{\ast }$ states with hidden charm and a three-body nature
• Electromagnetic couplings of pentaquarks
• Complete basis for the pentaquark wave function in a group theory approach