Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays

Abstract

Observations of exotic structures in the $J/\psi p$ channel, that we refer to as pentaquark-charmonium states, in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays are presented. The data sample corresponds to an integrated luminosity of 3/fb acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis is performed on the three-body final-state that reproduces the two-body mass and angular distributions. To obtain a satisfactory fit of the structures seen in the $J/\psi p$ mass spectrum, it is necessary to include two Breit-Wigner amplitudes that each describe a resonant state. The significance of each of these resonances is more than 9 standard deviations. One has a mass of $4380\pm 8\pm 29$ MeV and a width of $205\pm 18\pm 86$ MeV, while the second is narrower, with a mass of $4449.8\pm 1.7\pm 2.5$ MeV and a width of $39\pm 5\pm 19$ MeV. The preferred $J^P$ assignments are of opposite parity, with one state having spin 3/2 and the other 5/2.

48 pages, 18 figures including the supplementary material, v2 after referee's comments, now 19 figures

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• The chiral S=-1 meson-baryon interaction with new constrains on the NLO contributions
• Spin-parities of the $P_c(4440)$ and $P_c(4457)$ in the One-Boson-Exchange Model
• Photoproduction of hidden-charm states in the $\gamma p\to {\bar{D}}^{\ast 0}{\Lambda }_c^{+}$ reaction near threshold
• 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
• Correlation of the hidden-charm molecular tetraquarks and the charmoniumlike structures existing in the $B\to XYZ+K$
• Hadronic effects on the $cc\bar{q}\bar{q}$ tetraquark state in relativistic heavy ion collisions
• Heavy flavor molecular states with strangeness
• Selected strong decays of pentaquark State $P_c(4312)$ in a chiral constituent quark model
• Spectrum of the molecular pentaquarks
• Production of exotic hadrons in $pp$ and nuclear collisions
• Study on the strong decays of $\varphi (2170)$ and a grand expectation for the future charm-tau factory
• Hidden Bottom Pentaquark States with Spin 3/2 and 5/2
• Glueballs amass at RHIC and LHC Colliders! - The early quarkless 1st order phase transition at $T=270$ MeV - from pure Yang-Mills glue plasma to GlueBall-Hagedorn states
• Photoproduction of $\Lambda (1405)$ with the $N^{\ast }$ and $t$-channel Regge contributions
• Where is the stable Pentaquark
• Doubly charmed ${\Xi }_{cc}$ molecular states from meson-baryon interaction
• Triangle singularities in $B^{-}\to D^{\ast 0}{\pi }^{-}{\pi }^0\eta$ and $B^{-}\to D^{\ast 0}{\pi }^{-}{\pi }^{+}{\pi }^{-}$
• $P_{\psi s}^{\Lambda }(4459)$ and $P_{\psi s}^{\Lambda }(4338)$ as molecular states in $J/\psi \Lambda$ invariant mass spectra
• Compact $sssc\bar{c}$ pentaquark states predicted by a quark model
• Role of a triangle singularity in the $\pi N(1535)$ contribution to $\gamma p\to p{\pi }^0\eta$
• Role of a triangle singularity in the $\pi \Delta$ decay of the $N(1700)(3/2^{-})$
• Abnormal isospin violation and $a_0-f_0$ mixing in the $D_s^{+}\to {\pi }^{+}{\pi }^0{a}_0(980)(f_0(980))$ reactions
• Strong decay patterns of the hidden-charm pentaquark states $P_c(4380)$ and $P_c(4450)$
• Measurement of $CP$ violation parameters and polarisation fractions in $B_s^0\to J/\psi {\overline{K}}^{\ast 0}$ decays
• The strong decay patterns of $Z_c$ and $Z_b$ states in the relativized quark model
• Mass spectra and decays of open-heavy tetraquark states
• Charmless two-body anti-triplet $b$-baryon decays
• Weinberg operator contribution to the nucleon electric dipole moment in the quark model
• Is $X(7200)$ the heavy anti-quark diquark symmetry partner of $X(3872)$?
• Electromagnetic properties of doubly heavy pentaquark states
• Production of $P_c$ states in ${\Lambda }_b$ decays
• Compact hidden charm pentaquark states and QCD isomers
• $A_k\bar{F}$ Chiral Gauge Theories
• Study of $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays
• Heavy pentaquark states and a novel color structure
• Fully-heavy pentaquark states
• Fully-heavy tetraquarks: $bb\bar{c}\bar{c}$ and $bc\bar{b}\bar{c}$
• Triangle singularity in ${\tau }^{-}\to {\nu }_{\tau }{\pi }^{-}{f}_0(980)$ ($a_0(980)$) decays
• Data-driven dispersive analysis of the $\pi \pi$ and $\pi K$ scattering
• Fully heavy pentaquarks in quark models
• Pentaquarks from intrinsic charms in ${\Lambda }_b$ decays
• Partial decay widths of $P_c(4312)$ as a $\bar{D}{\Sigma }_c$ molecular state
• Heavy pentaquark states $P_c(4380)$ and $P_c(4450)$ in the $J/\psi$ production induced by pion beams off the nucleon
• Roles of $a_0(980)$, $\Lambda (1670)$, and $\Sigma (1385)$ in the ${\Lambda }_c^{+}\to \eta \Lambda {\pi }^{+}$ decay
• Exotic fully-heavy $Q\bar{Q}Q\bar{Q}$ tetraquark states in $8_{[Q\bar{Q}]}\otimes 8_{[Q\bar{Q}]}$ color configuration
• Hidden-charm pentaquark states through the current algebra: From their productions to decays
• Observation of the ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ decay
• Reproducibility and Replication of Experimental Particle Physics Results
• Triple-charm molecular states composed of $D^{\ast }{D}^{\ast }D$ and $D^{\ast }{D}^{\ast }{D}^{\ast }$
• Fully-charm and -bottom pentaquarks in a Lattice-QCD inspired quark model
• $X(3872)$ and $T_{cc}$: structures and productions in heavy ion collisions
• Anticharmed strange pentaquarks from the one-boson-exchange model
• Effective field theories for van der Waals interactions
• Hadron spectroscopy and interactions from lattice QCD
• $\Xi (1690)$ as a $\bar{K}\Sigma$ molecular state
• A new group of doubly charmed molecule with $T$-doublet charmed meson pair
• Peaks within peaks and the possible two-peak structure of the Pc(4457): the effective field theory perspective
• The exotic meson ${\pi }_1(1600)$ with $J^{PC}=1^{-+}$ and its decay into $\rho (770)\pi$
• Kaon and strangeonium spectrum in Regge phenomenology
• Analysis of the fully-heavy pentaquark states via the QCD sum rules
• $f_2(1810)$ as a triangle singularity
• The resonances $X(4140)$, $X(4160)$, and $P_{cs}(4459)$ in the decay of ${\Lambda }_b\to J/\psi \Lambda \varphi$
• Triply heavy tetraquark states
• Role of the $N^{\ast }(1535)$ in the ${\Lambda }_c^{+}\to {\bar{K}}^0\eta p$ decay
• Search for ${\Lambda }_c^{+}\to \varphi p{\pi }^0$ and branching fraction measurement of ${\Lambda }_c^{+}\to K^{-}{\pi }^{+}p{\pi }^0$
• Properties of open and hidden charm mesons in light quark matter
• Study of isospin eigenstates of the pentaquark molecular states with strangeness
• Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays
• Fully heavy pentaquark states in constituent quark model
• Nucleon-charmonium interactions from lattice QCD
• Analysis of $T_{cc}$ and $T_{bb}$ based on the hadronic molecular model and their spin multiplets
• Beautiful mathematics for beauty-full and other multi-heavy hadronic systems
• Possible Molecular Pentaquark States with Different Spin and Quark Configurations
• Heavy flavor pentaquarks with four heavy quarks
• The role of the triangle singularity in $\Lambda (1405)$ production in the ${\pi }^{-}p\to K^0\pi \Sigma$ and $pp\to p{K}^{+}\pi \Sigma$ processes
• Heavy and Strange Holographic Baryons
• Potential higher radial excitations in the light pseudoscalar meson family
• Triply-charmed dibaryon states or two-baryon scattering states from the QCD sum rules?
• Enhanced production of ${\Lambda }_b^0$ baryons in high-multiplicity $pp$ collisions at $\sqrt{s}=13$ TeV
• Heavy Holographic Exotics: Tetraquarks as Efimov States
• On the hidden charm pentaquark-s in ${\Lambda }_b\to J/\psi K^{-}p$ decay
• Mass Calculations of Light Quarkonium, Exotic $J^{PC}=0^{+-}$ Hybrid Mesons from Gaussian Sum-Rules
• Higher molecular $P_{\psi s}^{\Lambda /\Sigma }$ pentaquarks arising from the ${\Xi }_c^{(\prime ,\ast )}{\bar{D}}_1/{\Xi }_c^{(\prime ,\ast )}{\bar{D}}_2^{\ast }$ interactions
• Interference effect between $\varphi$ and $\Lambda (1520)$ production channels in the $\gamma p\to K^{+}{K}^{-}p$ reaction near threshold
• Double strangeness molecular-type pentaquarks from coupled channel dynamics
• Possible hadronic molecules composed of the doubly charmed baryon and nucleon
• Double-charm heptaquark states composed of two charmed mesons and one nucleon
• Hidden-charm pentaquark states in a mass splitting model
• $P_c$-like pentaquarks in hidden strange sector
• ${\chi }_{c0}(1P)$ decay into $\bar{\Sigma }\Sigma \pi$ in search of an $I=1$, $1/2^{-}$ baryon state around $\bar{K}N$ threshold
• The hadronic coupling constants of the lowest hidden-charm pentaquark state with the QCD sum rules in rigorous quark-hadron duality
• Molecular ${\Omega }_{cc}$ , ${\Omega }_{bb}$ and ${\Omega }_{bc}$ states
• Tetraquark mixing framework for isoscalar resonances in light mesons
• Fully Heavy Tetraquark $bb\bar{c}\bar{c}$: Lifetimes and Weak Decays
• Properties of $P_c(4312)$ pentaquark and its bottom partner
• Large production rate of new $B_s^0{\pi }^{\pm }$ and $D_s^{\pm }{\pi }^{\pm }$ states in high energy multi-production process
• Isospin eigenstates of the color singlet-singlet type pentaquark states
• Heavy baryons in a pion mean-field approach: A brief review
• Dibaryons with two strange quarks and one heavy flavor in a constituent quark model
• Search for $CP$ violation in ${\Xi }_b^{-}\to p{K}^{-}{K}^{-}$ decays
• Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab
• Manifestation of the $P$-wave diproton resonance in single-pion production in $pp$ collisions
• Gauged Aloof Baby Skyrme Model
• A Detailed Analysis of Flavour-changing Decays of Top Quarks as a Probe of New Physics at the LHC
• The ${\Lambda }_b\to {\Lambda }^{\ast }(1520)(\to N\bar{K}){\ell }^{+}{\ell }^{-}$ decay at low-recoil in HQET
• Triangle mechanisms in the build up and decay of the $N^{\ast }(1875)$
• $P_c$ Resonances in the Compact Pentaquark Picture
• Production of hidden-charm strange pentaquarks $P_{cs}$ from the $K^{-}p\to J/\psi \Lambda$ reaction
• Transport coefficients of heavy baryons
• Relativistic description of asymmetric fully heavy tetraquarks in the diquark-antidiquark model
• Constituent-counting rule in photoproduction of hyperon resonances
• Triply charmed dibaryons in the one boson exchange model
• Observation of a cusp-like structure in the $\gamma p\to K^{+}{\Sigma }^0$ cross section at forward angles and low momentum transfer
• Mass Predictions of Vector ($1^{--}$) Double-gluon Heavy Quarkonium Hybrids from QCD Sum Rules
• Lattice QCD static potentials of the meson-meson and tetraquark systems computed with both quenched and full QCD
• Narrow pentaquarks as diquark-diquark-antiquark systems
• $P_c$ states and their open-charm decays with the complex scaling method
• Systematic study on production of hidden-bottom pentaquark via $\gamma p$ and ${\pi }^{-}p$ scatterings
• Revisiting hidden-charm pentaquarks from QCD sum rules
• The role of hidden-charm pentaquark resonance $P_c^{+}(4450)$ in $J/\psi$ photoproduction on nuclei near threshold
• Study of three-flavored heavy dibaryons using lattice QCD
• Phenomenological predictions for pentaquark masses from fits to baryon masses
• Three-body molecules $\bar{D}{\bar{D}}^{\ast }{\Sigma }_c$- understanding the nature of $T_{cc}$, $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$
• The ${\Lambda }_c(2595)$ resonance as a dynamically generated state: the compositeness condition and the large $N_c$ evolution
• Isospin amplitudes in ${\Lambda }_b^0\to J/\psi \Lambda ({\Sigma }^0)$ and ${\Xi }_b^0\to J/\psi {\Xi }^0(\Lambda )$ decays
• Observation of $B_{(s)}^0\to J/\psi p\overline{p}$ decays and precision measurements of the $B_{(s)}^0$ masses
• The $D^{\ast }{D}^{\ast }\bar{D}$ and $D^{\ast }{D}^{\ast }{\bar{D}}^{\ast }$ Three-Body Systems
• $a_1(1260),a_1(1420)$ and the production in heavy meson decays
• Unveiling the Structure of Hidden-Bottom Strange Pentaquarks via Magnetic Moments
• Where are the hidden-charm hexaquarks?
• Fully-heavy hexaquark states via the QCD sum rules
• Degeneracy of doubly heavy baryons from heavy quark symmetry
• First Observation of the Semileptonic Decay ${\Lambda }_c^{+}\to p{K}^{-}{e}^{+}{\nu }_e$
• Hidden-charm Hexaquarks from Lattice QCD
• The ${\Xi }^{\ast }\bar{K}$ and $\Omega \eta$ interaction within a chiral unitary approach
• Heavy quark spin multiplet structure of $P_c$-like pentaquark as P-wave hadronic molecular state
• Masses and magnetic moments of exotic fully heavy pentaquarks
• Observation of the decay ${\Lambda }_b^0\to {\Lambda }_c^{+}p\overline{p}{\pi }^{-}$
• Light-Meson Spectroscopy at GlueX
• Charmonium-nucleon interactions from the time-dependent HAL QCD method
• Features of $\pi \Delta$ Photoproduction at High Energies
• Further signatures to support the tetraquark mixing framework for the two light-meson nonets
• Weak Decays of Stable Open-bottom Tetraquark by SU(3) Symmetry Analysis
• Searching for hidden-charm baryonium signals in QCD sum rules
• Flavor-singlet charm pentaquark
• Semileptonic ${\Lambda }_c$ decay to $\nu l^{+}$ and $\Lambda (1405)$
• Heavy hadron molecules in effective field theory: the emergence of exotic nuclear landscapes
• The interplay between compact and molecular structures in tetraquarks
• Virtual states in the coupled-channel problems with an improved complex scaling method
• Nature of the $X(6900)$ in partial wave decomposition of $J/\psi J/\psi$ scattering
• Study on possible molecular states composed of ${\Lambda }_c\bar{D}$ (${\Lambda }_{b}B$) and ${\Sigma }_c\bar{D}$ (${\Sigma }_{b}B$) within the Bethe-Salpeter framework
• Holographic charm and bottom pentaquarks II: Open and hidden decay widths
• Holographic heavy-baryons in the Witten-Sakai-Sugimoto model with the D0-D4 background
• $I=2$ $\pi \pi$ potential in the HAL QCD method with all-to-all propagators
• Semi-inclusive lepto-production of hidden-charm exotic hadrons
• Identify the hidden charm pentaquark signal from non-resonant background in electron-proton scattering
• Exotic pentaquark states with the $qqQQ\bar{Q}$ configuration
• SUSY with R-symmetry: confronting EW precision observables and LHC constraints
• Observation of the ${\Lambda }_b^0\to {\chi }_{c1}(3872)p{K}^{-}$ decay
• Doubly charmed pentaquark states in QCD sum rules
• Possible Molecular States Composed of Doubly Charmed Baryons with Couple-channel Effect
• A search for weakly decaying b-flavored pentaquarks
• Study of the B${}^{+}$ $\to$ J$/\psi \overline{\Lambda }$p decay in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• Instanton effects on the heavy-quark static potential
• Photoproduction of the $f_2^{\prime }(1525)$ and $K_2^{\ast }(1430)$
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• One way to verify the molecular picture of exotic hadrons --from $DK$ to $DDK/D{\bar{D}}^{(\ast )}K$
• Chiral effective Lagrangian for doubly charmed baryons up to $\mathcal{O}(q^4)$
• Towards the decay properties of deuteron-like state $d_{N\Omega }$
• Determination of $J/\psi$ chromoelectric polarizability from lattice data
• A novel method to test particle ordering and final state alignment in helicity formalism
• 70 Years of Hyperon Spectroscopy: A review of strange $\Xi$, $\Omega$ baryons, and the spectrum of charmed and bottom baryons
• Hadronic molecules with a $\bar{D}$ meson in a medium
• Hidden-strange molecular states and the $N\varphi$ bound state via a QCD van der Waals force
• Flavor Physics at the CEPC: a General Perspective
• The $X(4140)$ and $X(4160)$ resonances in the $e^{+}{e}^{-}\to \gamma J/\psi \varphi$ reaction
• Coherent helicity amplitude for sequential decays
• A View of Neutrino Studies with the Next Generation Facilities
• Possible bound states with hidden bottom from ${\bar{K}}^{(\ast )}{B}^{(\ast )}{\bar{B}}^{(\ast )}$ systems
• Simple estimates of the masses of pentaquarks with hidden beauty or strangeness
• $T_{bbb}$: a three $B-$meson bound state
• Restudy of the color-allowed two-body nonleptonic decay of bottom baryons ${\Xi }_b$ and ${\Omega }_b$ supported by hadron spectroscopy
• Searching for tetraquark through weak decays of b-baryons
• How much do charm sea quarks affect the charmonium spectrum?
• Holographic charm and bottom pentaquarks I: Mass spectra with spin effects
• Hidden charm pentaquark and $\Lambda (1405)$ in the ${\Lambda }_b^0\to {\eta }_c{K}^{-}p(\pi \Sigma )$ reaction
• Heavy quark spin multiplet structure of ${\bar{P}}^{(\ast )}{\Sigma }_Q^{(\ast )}$ molecular states
• Pentaquarks and strange tetraquark mesons
• Production of hidden-charm and hidden-bottom pentaquark states in electron-proton collisions
• Observation of the decay ${\Xi }_b^{-}\to p{K}^{-}{K}^{-}$
• Hadronic Molecular States Composed of Spin-$\frac{3}{2}$ Singly Charmed Baryons
• Pomeron, nucleon-resonance, and $(0^{+},0^{-},1^{+})$-meson contributions in $\varphi$-meson photoproduction
• Baryogenesis from leptomesons
• On tetraquarks with hidden charm and strangeness as phi-psi(2S) hadrocharmonium
• Prediction of new states from $D^{(\ast )}{B}^{(\ast )}{\bar{B}}^{(\ast )}$ three-body interactions
• Width of a two-body coupled-channel resonance
• New $X_{0,1}(2900)$-like exotic states in $b$-baryon decays
• Observation of ${\Lambda }_c^{+}\to \Lambda a_0(980{)}^{+}$ and Evidence for $\Sigma (1380{)}^{+}$ in ${\Lambda }_c^{+}\to \Lambda {\pi }^{+}\eta$
• Charm-baryon semileptonic decays and the strange ${\Lambda }^{\ast }$ resonances: New insights from lattice QCD
• Hidden-flavor pentaquarks
• Evidence supporting the existence of $P_c(4380{)}^{\pm }$ from the recent measurements of $B_s\to J/\psi p\bar{p}$
• XYZ States: Theory Overview
• Diquark Substructure in $\varphi$ Photoproduction
• Covalent hadronic molecules induced by shared light quarks
• Ordinary and exotic mesons in the extended Linear Sigma Model
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$
• Investigating the M1 radiative decay behaviors and the magnetic moments of the predicted triple-charm molecular-type pentaquarks
• Observation of the ${\Lambda }_{\mathrm{b}}^0$ $\to$ J/$\psi \Lambda \varphi$ decay in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Hyperon production in ${\Lambda }_c^{+}\to K^{-}p{\pi }^{+}$ and ${\Lambda }_c^{+}\to K_S^{0}p{\pi }^0$
• Investigations on the light hadron decays of $Z_b(10610)$ and $Z_b(10650)$
• Heavy Baryons with Strangeness in a Soliton Model
• Semileptonic ${\Lambda }_b\to {\bar{\nu }}_{l}l{\Lambda }_c(2595)$ and ${\Lambda }_b\to {\bar{\nu }}_{l}l{\Lambda }_c(2625)$ decays in the molecular picture of ${\Lambda }_c(2595)$ and ${\Lambda }_c(2625)$
• $J/\psi N$ interactions revisited and ${\Lambda }_b^0\to J/\psi K^{-}({\pi }^{-})p$ decays
• Hidden strange pentaquark in constituent quark models
• Helicity amplitudes for generic multi-body particle decays featuring multiple decay chains
• Structure of the $\mathbf{\Lambda }(1670)$ resonance
• Analysis of the triply-charmed pentaquark states with QCD sum rules
• Unwinding the rare $\Omega$ sector: Fragmentation of fully charmed baryons from HL-LHC to FCC
• Strange pentaquarks and excited $\Xi$ hyperons in ${\Xi }_b^{-}\to J/\psi \Lambda K^{-}$ final states
• Heavy baryons in holographic QCD with higher dimensional degrees of freedom
• Observation of the ${\Lambda }_{\text{b}}^0$ $\to$ J/$\psi {\Xi }^{-}$K${}^{+}$ decay
• MESON2016 -- Concluding Remarks
• Prospects for New Physics searches with ${\Lambda }_b\to \Lambda (1520){\ell }^{+}{\ell }^{-}$ decays
• Decays of Pentaquarks in Hadrocharmonium and Molecular Pictures
• Pole trajectories of the $\Lambda (1405)$ helps establish its dynamical nature
• Bottomonium-like tetraquarks in a chiral quark model
• Determination of Spin-parity Quantum Numbers for the Narrow Structure Near the $p\bar{\Lambda }$ Threshold in $e^{+}{e}^{-}\to p{K}^{-}\bar{\Lambda }+c.c.$
• Physics Goals and Experimental Challenges of the Proton-Proton High-Luminosity Operation of the LHC
• The strong vertices of charmed mesons $D$, $D^{\ast }$ and charmonia $J/\psi$, ${\eta }_c$
• Holographic charm and bottom pentaquarks III: Excitations through photo-production of heavy mesons
• Unravelling Pentaquarks with Born--Oppenheimer effective theory
• Hidden-charm Pentaquark Production at $e^{+}{e}^{-}$ Colliders
• Probing double hadron resonances by the complex scaling method
• Hidden-Bottom Pentaquarks: Mass Spectrum, Magnetic Moments and Partial Widths
• The role of electromagnetic interaction in the $X(3872)$ and its analogs
• Investigating the transition form factors of ${\Lambda }_b\to {\Lambda }_c(2625)$ and ${\Xi }_b\to {\Xi }_c(2815)$ and the corresponding weak decays with support from baryon spectroscopy
• Measurement of the ${\Lambda }_b^0\to \Lambda (1520){\mu }^{+}{\mu }^{-}$ differential branching fraction
• Compositeness of hadrons, nuclei, and atomic systems
• Hidden-charm Pentaquark States in Heavy Ion Collisions at the Large Hadron Collider
• Production of $P_c$(4312) state in electron-proton collisions
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• Binding of the three-hadron $D{D}^{\ast }K$ system from the lattice effective field theory
• The $X(6900)$ peak could be a molecular state
• Spectroscopic Analysis of Hidden-Charm Pentaquarks
• Doubly charmed hexaquarks in the diquark picture
• Detecting the pure triangle sigularity effect through the $\psi (2S)\to p\bar{p}\eta /p\bar{p}{\pi }^0$ process
• The Production of Singly Charmed Pentaquark $\bar{c}qqqq$ from Bottom Baryon
• Heavy-light hybrid mesons with different spin-parities
• Search for prompt production of pentaquarks in charm hadron final states
• Doubly-Charm and Doubly-Bottom Pentaquark molecular States via the QCD sum rules
• Models and Potentials in Hadron Spectroscopy
• Molecular pentaquark states with open charm and bottom flavors
• Photoproduction of $a_2(1320)$ in a Regge model
• Magnetic Moments of Hidden-Charm Pentaquarks in the Diquark-Diquark-Antiquark Scheme
• Photo- and electroproduction of $\Lambda (1405)$ via ${\gamma }^{(\ast )}p\to K^{+}{\pi }^{+}{\Sigma }^{-}$
• Production mechanism of hidden-charm pentaquark states $P_{c\bar{c}s}$ with strangeness $S=-1$
• Masses of the doubly heavy tetraquarks in a constituent quark model
• Analytic Map of Three-Channel S Matrix -Generalized Uniformization and Mittag-Leffler Expansion-
• Molecular states in $D_s^{(\ast )+}{\Xi }_c^{{(}^{\prime },\ast )}$ systems
• Production of pentaquarks in $pA$-collisions
• Holographic three flavor baryon in the Witten-Sakai-Sugimoto model with the D0-D4 background
• Production of vector mesons in pentaquark states resonance channel in $p$-$A$ ultraperipheral collisions
• Production of pentaquarks with hidden charm and double strangeness in ${\Xi }_b$ and ${\Omega }_b$ decays
• Interaction and Identification of the Meson-Baryon molecules
• Observation of the open-charm tetraquark candidate $T_{cs0}^{\ast }(2870{)}^0$ in the $B^{-}\to D^{-}{D}^0{K}_{\mathrm{S}}^0$ decay
• Data-based analysis of Forward-Backward Asymmetry in $B^{\pm }\to K^{\pm }{K}^{\mp }{K}^{\pm }$
• The possibility to study in-medium modification of $J/\psi$ mesons from their photoproduction on nuclei near threshold in the case of presence of the LHCb pentaquark states $P_c^{+}$ in this photoproduction
• A New Dynamical Picture for the Production and Decay of the $XYZ$ Mesons
• The electromagnetic multipole moments of the possible charm-strange pentaquarks in light-cone QCD
• The production of neutral $N^{\ast }(11052)$ resonance with hidden beauty from ${\pi }^{-}p$ scattering
• Heptaquarks with two heavy antiquarks in a simple chromomagnetic model
• Search for $XYZ$ states in ${\Lambda }_b$ decays at the LHCb
• Spectroscopy of $cc\bar{c}\bar{c}$ and $ss\bar{c}\bar{c}$ Tetraquarks within the Framework of Regge Phenomenology
• QCD sum rule study for hidden-strange pentaquarks
• The Standard Model: How far can it go and how can we tell?
• Feasibility study of the $K^{+}d\to K^{0}pp$ reaction for the "${\Theta }^{+}$" pentaquark
• Interpretation of near-threshold peaks using the method of independent S-matrix poles
• Studying the Pc(4450) resonance in J/psi photoproduction off protons
• Triply Heavy $\Omega$ Baryons with JETHAD: A High-Energy Viewpoint
• Prospects for detecting the hidden-strange pentaquarklike state $N^{\ast }(2080)$ in the ${\pi }^{-}p\to \varphi n$ reaction
• Role of the short-range dynamics in the formation of $D^{(\ast )}{\bar{D}}^{(\ast )}/B^{(\ast )}{\bar{B}}^{(\ast )}$ hadronic molecules
• Are there near-threshold Coulomb-like Baryonia?
• Phenomenological Analysis of Triply Heavy Pentaquarks with configurations $q\Bar{q}QQQ$ and $qqQQ\Bar{Q}$
• $P_c(4457)$ interpreted as a $J^P=1/2^{+}$ state by ${\bar{D}}^0{\Lambda }_c^{+}(2595)$-${\pi }^0{P}_c(4312)$ interaction
• The ${\Omega }_{cc}$ resonances with negative parity in the chiral constituent quark model
• Hidden-charm pentaquark formation in antiproton - deuterium collisions
• Hadronic resonances enhanced by thresholds
• Towards modeling the short-range interactions of hidden/open charm pentaquark molecular states
• Search for narrow resonances in $\pi p$ elastic scattering from the EPECUR experiment
• First observation of the decay ${\Lambda }_b^0\to {\eta }_c(1S)p{K}^{-}$
• Analytical dispersive parameterization for elastic scattering of spinless particles
• Masses and Magnetic Moments of Singly Heavy Pentaquarks
• The $\varphi NN,J/\psi NN,{\eta }_{c}NN$ systems based on HAL QCD interactions
• Spectroscopic study of $ss\bar{b}\bar{b}$ and $bb\bar{b}\bar{b}$ Tetraquarks using Regge phenomenology
• Constituent counting rule for exclusive production of heavy quarkoniumlike exotic resonance and a light hadron
• Investigate the pentaquark resonance in the $NK$ system
• Pentaquarks in semileptonic ${\Lambda }_b$ decays
• Gluino Meets Flavored Naturalness
• First observation of ${\Lambda }_b^0\to {\Sigma }_c^{(\ast )++}{D}^{(\ast )-}{K}^{-}$ decays
• Thermal production of sexaquarks in heavy-ion collisions
• Towards an amplitude analysis of the decay ${\Lambda }_b^0\to p{K}^{-}\gamma$
• Exclusive Charmonium Production at the Electron-ion collider in China
• DeepQuark: A Deep-Neural-Network Approach to Multiquark Bound States
• Study of the resonance contributions in the ${\Xi }_b^{-}\to p{K}^{-}{K}^{-}$ decay
• Heavy baryon production with an instanton interaction
• Production potential of hidden-strange molecular pentaquarks through the ${\pi }^{-}p\to K^{\ast }\Sigma$ process
• Double strangeness pentaquarks and other exotic hadrons in the ${\Xi }_b\to \Xi J/\Psi \varphi$ decay
• Deciphering the mechanism of $J/\psi$-nucleon scattering
• Traps in hadron spectroscopy: Thresholds, triangle singularities, etc
• Possible molecules of triple-heavy pentaquarks within the extended local hidden gauge formalism
• Study of the hidden charm pentaquarks ${\Lambda }_{c\bar{c}}$ above $4$ GeV
• A Simple Model of Pentaquarks
• Charmonium and exotics from lattice QCD
• LQCD: Flavor Physics and Spectroscopy
• Roles of scalar mesons in charmless ${\Lambda }_b$ decays
• Electromagnetic properties of possible triple-charm molecular hexaquarks
• Observation of $D^{+}\to f_0(500){\mu }^{+}{\nu }_{\mu }$ and study of $D^{+}\to {\pi }^{+}{\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ decay dynamics
• Observation of ${\Lambda }_b^0\to {\Lambda }_c^{+}{\bar{D}}^{(\ast )0}{K}^{-}$ and ${\Lambda }_b^0\to {\Lambda }_c^{+}{D}_s^{\ast -}$ decays
• First observation of $\gamma \gamma \to p\bar{p}{K}^{+}{K}^{-}$ and search for exotic baryons in $pK$ systems
• Semileptonic decay of $B_c^{-}$ into $X(3930)$, $X(3940)$, $X(4160)$
• Production of the (predicted) $K^{\ast }(4307)$ in $B$ decays
• Regge Trajectories of Tetraquarks and Pentaquarks with Massive Quarks in the Flux Tube Model
• $\bar{K}\bar{D}N$ molecular state as a "$uuds\bar{c}$ pentaquark" in a three-body calculation
• The ${\bar{D}}^{\ast }{\bar{D}}^{\ast }{\Sigma }_c$ Three-Body System
• Exotic Hadrons in the ${\Lambda }_b\to J/\psi \varphi \Lambda$ Decay
• The axial charges of the hidden-charm pentaquark states
• Schottky Anomaly and Hadronic Spectrum
• The odd-parity strange baryons $\Sigma ({\frac{1}{2}}^{-})$ below 1.8 GeV with Hamiltonian effective field theory
• Finding Interaction Mechanism between Exotic Molecule and Conventional Hadron
• Radiative decay and axial-vector decay behaviors of octet pentaquark states
• Searches for Exotic Hadrons at GlueX
• Analysis of bound and resonant states of doubly heavy tetraquarks with spin $J\le 2$
• R-Matrix Calculations for Few-Quark Bound States
• Triple-strangeness hidden-charm pentaquarks
• Sum rules for strong decays of 10 and 27 dibaryon multiplets in broken SU(3) symmetry
• Decay behavior of hidden-strange hadronic molecular state $N(2270)$
• Discovering an Unquenched Dynamics Mechanism for Charmonium Scattering
• Observation of the ${\Lambda }_b^0\to J/\psi {\Xi }^{-}{K}^{+}$ and ${\Xi }_b^0\to J/\psi {\Xi }^{-}{\pi }^{+}$ decays
• Hadrons and Few-Body Physics
• Subthreshold production of $J/\psi$ mesons from the deuteron with SoLID
• Role of pentaquark components in $\varphi$ meson production proton-antiproton annihilation reactions
• Spectrum of Light Hexaquark States in Triquark-antitriquark Configuration
• b decays: a factory for hidden charm multiquark states
• Heavy-meson chiral Lagrangians, effective flavored couplings, SU(4) flavor breaking and their consequences
• Nature of $X(2370)$
• 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
• Doubly-charmed pentaquark states in a mass splitting model
• Coalescence production of sexaquark with three diquarks in high-energy nuclear collisions
• Hidden charm ${\mathcal{P}}_{cs}(4338{)}^0$ production in baryonic $B^{-}\to J/\psi \Lambda \bar{p}$ decay
• Strong decays of the $P_{cs}(4338)$ and its high isospin cousin via the QCD sum rules
• Dynamically generated states from the $\eta K^{\ast }{\bar{K}}^{\ast }$, $\pi K^{\ast }{\bar{K}}^{\ast }$, and $K{K}^{\ast }{\bar{K}}^{\ast }$ systems within the fixed-center approximation
• Strong decays of the $P_c(4312)$ and its isospin cousin via the QCD sum rules
• Production of $X_{cs\bar{c}\bar{s}}$ in heavy ion collisions
• Observation of $e^{+}{e}^{-}\to pp\bar{p}\bar{n}{\pi }^{-}+c.c.$
• Predicting the Masses of Exotic Hadrons with Data Augmentation Using Multilayer Perceptron
• $D$-wave excited $cs\bar{c}\bar{s}$ tetraquark states with $J^{PC}=1^{++}$ and $1^{+-}$
• A note on blind technique for new physics searches in particle physics
• Singly heavy baryons in nuclear matter from an SU(3) chiral soliton model
• Multimodal Fragmentation of All-Heavy Pentaquarks: Uncertainty-Aware Predictions for Hadron Colliders
• Exotic Heavy Hadrons
• Search for the $N$(1685) in $\eta \pi$-Photoproduction
• Towards a theory of baryon resonances
• Application of the Thomas Fermi Quark Model to Multiquark Mesons
• Weinberg operator contribution to the CP-odd nuclear force in the quark model
• Lattice QCD Study of the Nucleon-Charmonium Interaction
• Multiquark States in the Thomas-Fermi Quark Model and on the Lattice
• $\omega \to 3\pi$ and $\omega {\pi }^0$ transition form factor revisited
• Pentaquark photoproduction
• The GlueX Experiment: Recent Results and Future Plans
• Amplitude analysis of $\bar{K}N$ scattering
• Physics Opportunities with a Secondary K0_L Beam at JLab
• $N^{\ast }$ Production from $e^{+}{e}^{-}$ Annihilations
• Summary and Outlook: 2015 Lepton-Photon Symposium
• Exotic hadron spectroscopy at the LHCb experiment
• Stability of pentaquarks with a two- plus three-body chromoelectric interaction
• Five-flavor molecular pentaquarks in the ${\Xi }_b^{(\prime ,\ast )}{\bar{D}}^{(\ast )}$ and ${\Xi }_c^{(\prime ,\ast )}{B}^{(\ast )}$ systems
• Heavy quark expansion of ${\Lambda }_b\to {\Lambda }^{\ast }(1520)$ form factors beyond leading order
• Hadron Spectroscopy, exotics and $B_c^{+}$ physics at LHCb
• Quantum Numbers of the Pentaquark States $P_c^{+}$ via Symmetry Analysis
• Quark-model search for compact $c\bar{c}uds$ pentaquark states
• Meson Spectroscopy at COMPASS
• Baryons and baryoniums in the perspective of QCD sum rules
• Decay behaviors of the $P_c$ hadronic molecules
• Production of hidden-heavy and double-heavy hadronic molecules at the $Z$ factory of CEPC
• $N^{\ast }$ states with hidden charm and a three-body nature
• The study of doubly charmed pentaquark $cc\bar{q}qq$ with the SU(3) symmetry
• Differential technique for the covariant orbital angular momentum operators
• Prospects for rare B decays at Belle II
• Study of Fully heavy Pentaquarks using extended Gursey-Radicati formalism
• Hadronic molecules and multiquark states
• Strangeness photoproduction at extremely forward angles at the BGO-OD experiment
• Partial Wave Analysis of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ and Cross Section Measurement of $e^{+}{e}^{-}\to {\pi }^{\pm }{Z}_c(3900{)}^{\mp }$ from 4.1271 to 4.3583 GeV
• Diquark correlations in baryons: the Interacting Quark Diquark Model
• Efficient description of experimental effects in amplitude analyses
• $\bar{D}{\Sigma }_c^{\ast }$ and ${\bar{D}}^{\ast }{\Sigma }_c$ interactions and LHCb pentaquarks
• Learning Pole Structures of Hadronic States using Predictive Uncertainty Estimation
• The Joint Physics Analysis Center: Recent results
• Spectrum of Hidden-Charm, Open-Strange Exotics in the Dynamical Diquark Model
• Pentaquark states with hidden charm
• Molecular pentaquarks composed of a ground-state octet baryon and a $P-$wave anticharmed meson
• Flavour Physics at LHCb -- 50 years of the KM paradigm
• Wigner rotations for cascade reactions
• Heavy-flavor multimodal fragmentation to $S$-wave pentacharms at next-generation hadron colliders
• The ccbar Pentaquarks by a Quark Model
• Meson scattering and tetraquarks in two-dimensional QCD
• Role of the short-range dynamics in simultaneous interpretation of $P_{cs}$ pentaqurks via ${\Xi }_c^{(\prime ,\ast )}{\bar{D}}^{(\ast )}$ molecules
• Observation and investigation of the $T_{c\bar{c}1}(4430{)}^{+}$ structure in $B^{+}\to \psi (2S)K_{\text{S}}^0{\pi }^{+}$ decays
• Compositness and wave function of shallow bound states in relation to scattering observables
• Correlation function for the $n{\bar{D}}_{s0}^{\ast }(2317)$ interaction and the issue of elastic unitarity
• Diquark-diquark-antiquark model for pentaquarks with hidden charm: current status and problems
• Heavy baryons with Strangeness in Soliton Models
• Compact Tetraquark Interpretation of the XYZ States
• Penta-quark States with Strangeness, Hidden Charm and Beauty
• Compositeness of Hadrons and Near-Threshold Dynamics
• Combined heavy-quark symmetry and large-$N_c$ operator analysis for 2-body counterterms in the chiral Lagrangian with $D$ mesons and charmed baryons
• Propagators of resonances and rescatterings of the decay products
• Baryon resonances in the strangeness production
• Multiquark Hadrons
• Excited lepton baryogenesis
• Rescaling of quantized skyrmions: from nucleon to baryons with heavy flavor
• The scalar and pseudoscalar hidden-charm tetraquark states with QCD sum rules
• Symmetries in subatomic multi-quark systems
• Electromagnetic couplings of pentaquarks
• Non-mesonic decay of the $\eta$-mesic $^{3}\hspace{-0.03cm}\mbox{He}$ via $pd\rightarrow(^{3}\hspace{-0.03cm}\mbox{He}$-$\eta {)}_{bound}\to$ $^{3}\hspace{-0.03cm}\mbox{He} 2γ(6γ$) reaction
• Complete basis for the pentaquark wave function in a group theory approach
• Identification of deuteron at BESIII
• Prospects for compact hexaquarks under the limitation imposed by quark confinement
• Exotic Hadrons and Underlying Z_{2,3} Symmetries
• Multivariate amplitude analysis of the cascade particle decays based on the Nearest Neighbors fitting
• Systematic study of fully heavy-flavored tetraquarks $Q_1{Q}_2{\bar{Q}}_1{\bar{Q}}_2(Q_{1;2}\in \left\{b;c\right\})$: Mass spectra, threshold analysis, and confrontation with LHC data
• Analytic electromagnetic signatures of compact pentaquark structure: A multi-current QCD light-cone sum rules analysis of the $P_{\psi s}^{\Lambda }$ states
• Qualitative analysis of proton inelastic scattering for diquark searching
• Strange pentaquark molecules in QCD sum rules
• Possible ${\bar{D}}^{(\ast )}{\Xi }_{cc}^{(\ast )}$ and ${\Xi }_{cc}^{(\ast )}{\Xi }_{cc}^{(\ast )}$ molecules as superflavor partners of $T_{cc}$
• Systematic exploration of triply heavy tetraquarks: spectroscopic and decay characteristics
• Exotic hadrons associated with $b$-quark
• Study of $e^{+}{e}^{-}\to h^{+}{h}^{-}J/\psi (h=\pi ,K,p)$ via initial-state radiation at Belle~II