Exotic hadrons associated with $b$-quark

Abstract

Compared to charmonium-like states, exotic hadrons associated with $b$-quark offer distinct advantages for exploring the nature of multiquark phenomena and the dynamics of the strong interaction. Due to the heavier bottom quark mass, theoretical calculations, particularly those based on effective field theories and potential models, tend to be more reliable and under better control in the bottomonium sector. With its clean $e^{+}{e}^{-}$ collision environment and high luminosity, the Belle and Belle II experiments are ideally suited to explore these exotic hadrons associated with $b$-quark, including $Z_b$, $X_b$, and $Y_b$ states, and charmonium-like states in $B$ decays. Utilizing the large proton--proton collision dataset, the LHCb experiment has conducted extensive investigations of heavy-flavor multiquark states through $B$ and ${\Lambda }_b$ decay channels. The relevant phenomenological interpretations are also reviewed.

85 pages, 36 figures. Accepted for publication in Physics Reports

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• X(3872) as a hadronic molecule and its decays to charmonium states and pions
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• Spin-dependent potentials from lattice QCD
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• Doubly Charmed Tetraquark $T_{cc}^{+}$ from Lattice QCD near Physical Point
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• Towards a new paradigm for heavy-light meson spectroscopy
• Study of e+e- => B(*) B(*)-bar pi+- at sqrt(s)=10.866 GeV
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• Deriving the existence of $B{\bar{B}}^{\ast }$ bound states from the X(3872) and Heavy Quark Symmetry
• Analysis of the $Z(4430)$ as the first radial excitation of the $Z_c(3900)$
• Decays of the X(3872) into J/psi and Light Hadrons
• Tetraquark operators in lattice QCD and exotic flavour states in the charm sector
• Observation of a neutral charmoniumlike state $Z_c(4025{)}^0$ in $e^{+}{e}^{-}\to (D^{\ast }{\bar{D}}^{\ast }{)}^0{\pi }^0$
• Charmonium-like resonances with $J^{PC}=0^{++},2^{++}$ in coupled $D\bar{D}$, $D_s{\bar{D}}_s$ scattering on the lattice
• Constructing $J/\psi$ family with updated data of charmoniumlike $Y$ states
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• The $P_{cs}(4459)$ pentaquark from a combined effective field theory and phenomenological perspective
• Remarks on the $P_c$ structures and triangle singularities
• First observation of a doubly charged tetraquark and its neutral partner
• A lattice investigation of exotic tetraquark channels
• Rescattering and chiral dynamics in B\to ρπdecay
• Strange molecular partners of the $Z_c(3900)$ and $Z_c(4020)$
• The LHCb upgrade I
• Possible strange hidden-charm pentaquarks from ${\Sigma }_c^{(\ast )}{\bar{D}}_s^{\ast }$ and ${\Xi }_c^{{(}^{\prime },\ast )}{\bar{D}}^{\ast }$ interactions
• Interplay of quark and meson degrees of freedom in near-threshold states: A practical parametrisation for line shapes
• Strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$
• Higher bottomonium zoo
• One pion exchange and the quantum numbers of the Pc(4440) and Pc(4457) pentaquarks
• Open-charm tetraquark $X_c$ and open-bottom tetraquark $X_b$
• Semitauonic $b$-hadron decays: A lepton flavor universality laboratory
• A Study of the DsJ(2317) and DsJ(2460) Mesons in Inclusive ccbar Production Near sqrt(s) = 10.6 GeV
• Novel coupled channel framework connecting quark model and lattice QCD: an investigation on near-threshold $D_s$ states
• $T_{cc}^{+}(3875)$ relevant $D{D}^{\ast }$ scattering from $N_f=2$ lattice QCD
• X(3872) in the molecular model
• Quarkonium Contribution to Meson Molecules
• A Review on Partial-wave Dynamics with Chiral Effective Field Theory and Dispersion Relation
• Search for tetraquark candidate Z(4430) in meson photoproduction
• $Z_{cs}(3985{)}^{-}$ as the $U$-spin partner of $Z_c(3900{)}^{-}$ and implication of other states in the ${\text{SU(3)}}_F$ symmetry and heavy quark symmetry
• Triangle singularity as the origin of $X_0(2900)$ and $X_1(2900)$ observed in $B^{+}\to D^{+}{D}^{-}{K}^{+}$
• The line shapes of the $Z_b(10610)$ and $Z_b(10650)$ in the elastic and inelastic channels revisited
• Strong decays of ${\bar{D}}^{\ast }{K}^{\ast }$ molecules and the newly observed $X_{0,1}$ states
• Analysis of the $X_0(2900)$ as the scalar tetraquark state via the QCD sum rules
• First exotic hadron with open heavy flavor: $cs\bar{u}\bar{d}$ tetraquark
• A practical parametrization for line shapes of near-threshold states
• Can the newly $P_{cs}(4459)$ be a strange hidden-charm ${\Xi }_c{\bar{D}}^{\ast }$ molecular pentaquarks?
• Hidden-charm pentaquarks as a meson-baryon molecule with coupled channels for ${\bar{D}}^{(\ast )}{\Lambda }_{\mathrm{c}}$ and ${\bar{D}}^{(\ast )}{\Sigma }_{\mathrm{c}}^{(\ast )}$
• Study of $B{\bar{B}}^{\ast }$ and $B^{\ast }{\bar{B}}^{\ast }$ interactions in $I=1$ and relationship to the $Z_b(10610)$, $Z_b(10650)$ states
• Could the $X(3915)$ and the $X(3930)$ Be the Same Tensor State?
• Open charm and bottom tetraquarks in an extended relativized quark model
• Coupled-Channel Effects for the Bottomonium with Realistic Wave Functions
• Long-range properties of $1S$ bottomonium states
• Pionic transitions from X(3872) to chi_{cJ}
• Contribution of constituent quark model $c\bar{s}$ states to the dynamics of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ resonances
• Magnetic dipole moments of the $T_{cc}^{+}$ and $Z_V^{++}$ tetraquark states
• Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
• Tetraquark-based analysis and predictions of the cross sections and distributions for the processes e^+ e^- --> Upsilon(1S) (pi^+ pi^-, K^+ K^-, eta pi^0) near Upsilon(5S)
• Elastic s-wave B pi, D pi, D K and K pi scattering from lattice calculations of scalar form factors in semileptonic decays
• A study of the decays of $S-$wave ${\bar{D}}^{\ast }{K}^{\ast }$ hadronic molecules: the scalar $X_0(2900)$ and its spin partners $X_{J(J=1,2)}$
• The $X_0(2900)$ and its heavy quark spin partners in molecular picture
• Systematic studies of charmonium-, bottomonium-, and $B_c$-like tetraquark states
• $X_{0,1}$(2900) and $(D^{-}{K}^{+})$ invariant mass from QCD Laplace sum rules at NLO
• Observation of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}{\pi }^0{\chi }_{bJ}$ and search for $X_b\to \omega {\rm Y}(1S)$ at $\sqrt{s}\sim 10.867$ GeV
• $P_c(4312{)}^{+}$, $P_c(4380{)}^{+}$, and $P_c(4457{)}^{+}$ as double triangle cusps
• Mass spectrum and strong decays of tetraquark $\bar{c}\bar{s}qq$ states
• Production of the bottom analogues and the spin partner of the X(3872) at hadron colliders
• Searching for the Bottom Counterparts of X(3872) and Y(4260) via ${\pi }^{+}{\pi }^{-}{\rm Y}$
• A new look at the $P_{cs}$ states from a molecular perspective
• Search for a new bottomonium state decaying to Upsilon(1S) pi+ pi- in pp collisions at sqrt(s) = 8 TeV
• Novel approaches in Hadron Spectroscopy
• Charged charmonium-like Z+(4430) from rescattering in conventional B decays
• Study of open-charm decays and radiative transitions of the X(3872)
• Observation of the decay $X(3872)\to {\pi }^0{\chi }_{c1}(1P)$
• Decoding the nature of $Z_{cs}(3985)$ and establishing the spectrum of charged heavy quarkoniumlike states in chiral effective field theory
• Nucleon-$J/\psi$ and nucleon-${\eta }_c$ scattering in $P_c$ pentaquark channels from LQCD
• Observation of ${\rm Y}(4S)decaysto$π^+pi^-Υ(1S)$and$π^+pi^-Υ(2S)
• Some comments on narrow resonances D_{s_1}^* (2.46GeV/c^2) and D_{s0} (2.317GeV/c^2)
• New scalar resonance $X_0(2900)$ as a ${\overline{D}}^{\ast }{K}^{\ast }$ molecule: Mass and width
• The strange partner of the $Z_c$ structures in a coupled-channels model
• A Phenomenological analysis on isospin-violating decay of $X(3872)$
• Emergence of molecular-type characteristic spectrum of hidden-charm pentaquark with strangeness embodied in the $P_{\psi s}^{\Lambda }(4338)$ and $P_{cs}(4459)$
• Heavy-strange meson molecules and possible candidates $D_{s0}^{\ast }(2317)$, $D_{s1}(2460)$, and $X_0(2900)$
• An open charm tetraquark candidate: note on $X_0(2900)$
• Investigation of magnetic moment of $P_{cs}(4338)$ and $P_{cs}(4459)$ pentaquark states
• Note on X(3872) production at hadron colliders and its molecular structure
• Investigation of $P_{cs}(4459{)}^0$ pentaquark via its strong decay to $\Lambda J/\Psi$
• The $Z_{cs}(3985)$ as a threshold effect from the ${\bar{D}}_s^{\ast }D+{\bar{D}}_s{D}^{\ast }$ interaction
• Strange hidden-charm $P_{\psi s}^{\Lambda }(4459)$ and $P_{\psi s}^{\Lambda }(4338)$ pentaquarks and additional $P_{\psi s}^{\Lambda }$, $P_{\psi s}^{\Sigma }$ and $P_{\psi ss}^N$ candidates in a quark model approach
• Exotic to standard bottomonium transitions
• Towards the quark mass dependence of $T_{cc}^{+}$ from lattice QCD
• Discriminating among interpretations for the $X(2900)$ states
• Mass spectra for $qc\bar{q}\bar{c}$, $sc\bar{s}\bar{c}$, $qb\bar{q}\bar{b}$, $sb\bar{s}\bar{b}$ tetraquark states with $J^{PC}=0^{++}$ and $2^{++}$
• The double thresholds distort the lineshapes of the $P_{\psi s}^{\Lambda }(4338{)}^0$ resonance
• Spin partners of the $Z_b(10610)$ and $Z_b(10650)$ revisited
• Effects of $Z_b$ states and bottom meson loops on ${\rm Y}(4S)\to {\rm Y}(1S,2S){\pi }^{+}{\pi }^{-}$ transitions
• Observation of a resonant structure near the $D_s^{+}{D}_s^{-}$ threshold in the $B^{+}\to D_s^{+}{D}_s^{-}{K}^{+}$ decay
• Spin partners $W_{bJ}$ from the line shapes of the $Z_b(10610)$ and $Z_b(10650)$
• Establishing the heavy quark spin and light flavor molecular multiplets of the $X(3872)$, $Z_c(3900)$ and $X(3960)$
• Bottomonium spectrum in the relativistic flux tube model
• Computation of the quarkonium and meson-meson composition of the ${\rm Y}(nS)$ states and of the new ${\rm Y}(10753)$ Belle resonance from lattice QCD static potentials
• Study of Di-Pion Transitions Among Upsilon(3S), Upsilon(2S), and Upsilon(1S) States
• Heavy Quarkonium π^+π^- Transitions and a Possible b\bar{b}q\bar{q} State
• Vector hidden-bottom tetraquark candidate: $Y(10750)$
• LHCb pentaquarks in constituent quark models
• Measurement of the Direct Photon Momentum Spectrum in Upsilon(1S), Upsilon(2S), and Upsilon(3S) Decays
• Predicting the ${\bar{D}}_s^{(\ast )}{D}_s^{(\ast )}$ bound states as the partners of $X(3872)$
• One Born$-$Oppenheimer Effective Theory to rule them all: hybrids, tetraquarks, pentaquarks, doubly heavy baryons and quarkonium
• Where is the lightest charmed scalar meson?
• Line shapes in Υ(5S) \to B^{(*)} \bar{B}^{(*)}πwith Z(10610) and Z(10650) using effective field theory
• A combined analysis of the $Z_c(3900)$ and the $Z_{cs}(3985)$ exotic states
• Strong decays and dipion transitions of Upsilon(5S)
• Bottomonium dipion transitions
• The $\mathbf{sQ}\bar{\mathbf{q}}\bar{\mathbf{q}}$ $(\mathbf{q}=\mathbf{u},\mathbf{d};\mathbf{Q}=\mathbf{c},\mathbf{b})$ tetraquarks in the chiral quark model
• Structure of the axial-vector meson $D_{s1}(2460)$ and the strong coupling constant $g_{D_{s1}{D}^{\ast }K}$ with the light-cone QCD sum rules
• Radiative decays of the $D_{s0}(2317)$, $D_{s1}(2460)$ and the related strong coupling constants
• Systematic study of $Z_c^{+}$ family from quark model's perspective
• Analysis of the $P_{cs}(4338)$ and related pentaquark molecular states via the QCD sum rules
• Update on strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and their bottom cousins
• Excited $K$ meson, $K_c(4180)$, with hidden charm as a $D\bar{D}K$ bound state
• On the possibility to observe higher $n^3{D}_1$ bottomonium states in the $e^{+}{e}^{-}$ processes
• The $T_{c\bar{s}}(2900)$ as a threshold effect from the interaction of the $D^{\ast }{K}^{\ast }$, $D_s^{\ast }\rho$ channels
• Interpretation of $Y_b(10750)$ as a tetraquark and its production mechanism
• $X(3915)$ as a $D_s{\bar{D}}_s$ bound state
• Bottomonium-like states: physics case for energy scan above the $B\bar{B}$ threshold at Belle-II
• Measurements of the Absolute Branching Fractions of $B^{\pm }\to K^{\pm }{X}_{c\bar{c}}$
• Measurements of the absolute branching fractions of $B^{+}\to X_{c\bar{c}}{K}^{+}$ and $B^{+}\to {\bar{D}}^{(\ast )0}{\pi }^{+}$ at Belle
• Zb tetraquark channel from lattice QCD and Born-Oppenheimer approximation
• Study on Decays of $D_{sJ}^{\ast }(2317)$ and $D_{sJ}(2460)$ in terms of the CQM Model
• Charmed-strange tetraquarks and their decays in a potential quark model
• Observation of the decay Upsilon(4S) -> Upsilon(1S) pi+ pi-
• Shallow Bound States and Hints for Broad Resonances with Quark Content $\bar{b}\bar{c}ud$ in $B$-$\bar{D}$ and $B^{\ast }$-$\bar{D}$ Scattering from Lattice QCD
• Bound isoscalar axial-vector $bc\bar{u}\bar{d}$ tetraquark $T_{bc}$ from lattice QCD using two-meson and diquark-antidiquark variational basis
• Search for the $X_b$ and other hidden-beauty states in the ${\pi }^{+}{\pi }^{-}{\rm Y}(1\mathrm{S})$ channel at ATLAS
• ${\mathrm{Z}}^{+}(4430)$ and Analogous Heavy Flavor States
• ${\rm Y}(nl)$ decay into $B^{(\ast )}{\bar{B}}^{(\ast )}$
• Production of exotic hadrons in $pp$ and nuclear collisions
• The LHCb state $P_{\psi s}^{\Lambda }(4338)$ as a triangle singularity
• Two-pion transitions in quarkonium revisited
• Relativistic model of hidden bottom tetraquarks
• Is $Z_{cs}(3982)$ a molecular partner of $Z_c(3900)$ and $Z_c(4020)$ states?
• Hunting for the X_b via Radiative Decays
• Mass spectra and decays of open-heavy tetraquark states
• Enhanced breaking of heavy quark spin symmetry
• The $X(3960)$ seen in $D_s^{+}{D}_s^{-}$ as the $X(3930)$ state seen in $D^{+}{D}^{-}$
• Light Quark Spin Symmetry in $Z_b$ Resonances?
• Evidence for a neutral near-threshold structure in the $K_{\mathrm{S}}^0$ recoil-mass spectra in $e^{+}{e}^{-}\to K_{\mathrm{S}}^0{D}_s^{+}{D}^{\ast -}$ and $e^{+}{e}^{-}\to K_{\mathrm{S}}^0{D}_s^{\ast +}{D}^{-}$
• K-matrix Analysis of $e^{+}{e}^{-}$ Annihilation in the Bottomonium Region
• Excited and exotic bottomonium spectroscopy from lattice QCD
• X_1(2900) as a D_1 K molecule
• Vector resonance $X_1(2900)$ and its structure
• Observation of $e^{+}{e}^{-}\to \omega {\chi }_{bJ}(1P)$ and search for $X_b\to \omega {\rm Y}(1S)$ at $\sqrt{s}$ near 10.75 GeV
• Understanding the $0^{++}$ and $2^{++}$ charmonium(-like) states near 3.9 GeV
• Possible molecular states of ${\bar{D}}^{\ast }{K}^{\ast }$ ($D^{\ast }{K}^{\ast }$) and the new exotic states $X_0(2900)$ and $X_1(2900)$ ($T_{cs0}^a(2900{)}^0$ and $T_{cs0}^a(2900{)}^{++}$)
• Tetraquark systems $\bar{b}b\bar{d}u$ in the static limit and lattice QCD
• Monte-Carlo Based QCD Sum Rules Analysis of $X_0(2900)$ and $X_1(2900)$
• Comment on `Note on X(3872) production at hadron colliders and its molecular structure'
• Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment
• The decays of the fully open flavor state $T_{c\bar{s}0}^0$ in a $D^{\ast }{K}^{\ast }$ molecule scenario
• Scalar and tensor charmonium resonances in coupled-channel scattering from QCD
• Modeling the resonance $T_{cs0}^a(2900{)}^{++}$ as a hadronic molecule $D^{\ast +}{K}^{\ast +}$
• Near-threshold states in coupled $D{D}^{\ast }-D^{\ast }{D}^{\ast }$ scattering from lattice QCD
• Nucleon-charmonium interactions from lattice QCD
• Spectrum of the molecular tetraquarks: Unraveling the $T_{cs0}(2900)$ and $T_{c\bar{s}0}^a(2900)$
• Implications of chiral symmetry on $S$-wave pionic resonances and the scalar charmed mesons
• The radiative decays of $0^{++}$ and $1^{+-}$ heavy mesons
• Analysis of the $T_{c\bar{s}}(2900)$ and related tetraquark states with the QCD sum rules
• Doubly charm tetraquark channel with isospin $1$ from lattice QCD
• How to identify the structure of near-threshold states from the line shape
• Color flux-tube nature of the states $T_{cs}(2900)$ and $T_{c\bar{s}}^a(2900)$
• X(2900) in a chiral quark model
• Magnetic dipole moment of $Z_b(10610)$ in light-cone QCD
• Predicting isovector charmonium-like states from X(3872) properties
• Remarks on the Heavy-Quark Flavour Symmetry for doubly heavy hadronic molecules
• $Z_c(4430)$ and $Z_c(4200)$ as triangle singularities
• Insights into $Z_b(10610)$ and $Z_b(10650)$ from dipion transitions from ${\rm Y}(10860)$
• Study of isoscalar scalar $bc\bar{u}\bar{d}$ tetraquark $T_{bc}$ from lattice QCD
• Possibility of $T_{c\bar{s}}(2900)$ as the resonance-like structure induced by threshold effects
• Prediction of possible $D{K}_1$ bound states
• Novel implementation of the multipole expansion to quarkonium hadronic transitions
• A quark model suggestion against Ds*(2317) and Ds*(2460) as chiral partners of standard Ds
• Charmonium ${\chi }_{c0}$ and ${\chi }_{c2}$ resonances in coupled-channel scattering from lattice QCD
• Revisiting hidden-charm pentaquarks from QCD sum rules
• Observation of $B_{(s)}^0\to J/\psi p\overline{p}$ decays and precision measurements of the $B_{(s)}^0$ masses
• Light sigma-Meson Production in Excited Upsilon Decay Processes I: Analyses
• Magnetic moment of the $X_1(2900)$ state in the diquark-antidiquark picture
• The Ds(2317) and Ds(2463) Mesons as Scalar and Axial-Vector Chiralons in the Covariant Level-Classification Scheme
• Decays of $X(3872)$ to ${\chi }_{cJ}{\pi }^0$ and $J/\psi {\pi }^{+}{\pi }^{-}$
• Search for $X(3872)$ and $X(3915)$ decay into ${\chi }_{c1}{\pi }^0$ in $B$ decays at Belle
• Studying the ${\bar{D}}_{1}K$ molecule in the Bethe-Salpeter equation approach
• Study of $I=0$ bottomonium bound states and resonances in $S$, $P$, $D$ and $F$ waves with lattice QCD static-static-light-light potentials
• Decay properties of new D-mesons
• Production of the $Z_b^{(\prime )}$ states from the ${\rm Y}(5S,6S)$ decays
• The interplay between compact and molecular structures in tetraquarks
• On the structure of the pi pi invariant mass spectra of the Upsilon(4S)-->Upsilon(1S,2S) pi^+ pi^- decays
• Molecular states of $D^{\ast }{D}^{\ast }{\bar{K}}^{\ast }$ nature
• Scalar Dipion States Produced in Heavy Quarkonium Decays and the Final State Interaction
• The $Z_b$ structures in a constituent quark model coupled-channels calculation
• Can X(3915) be the tensor partner of the X(3872)?
• The nature of ${\chi }_{c1}\left(3872\right)$ and $T_{cc}^{+}\left(3875\right)$
• Mass spectrum of $1^{--}$ heavy quarkonium
• Charmonium: Conventional and $XYZ$ States in a Relativistic Screened Potential Model
• $P$-wave charmonium contribution to hidden-charm states from reanalysis of lattice QCD data
• Hidden-bottom hadronic transitions of ${\rm Y}(10753)$
• Charged charmonium-like states as rescattering effects in B -> D_sJ D^(*) decays
• Is the resonance $X_0(2900)$ a ground-state or radially excited scalar tetraquark $[ud][\overline{c}\overline{s}]$?
• Isospin-conserving hadronic decay of the $D_{s1}(2460)$ into $D_s{\pi }^{+}{\pi }^{-}$
• Evidence of a $J/\psi K_S^0$ structure in $B^0\to J/\psi \varphi K_S^0$ decays
• Chromopolarizabilities of bottomonia from the ${\rm Y}(2S,3S,4S)\to {\rm Y}(1S,2S)\pi \pi$ transitions
• Shedding light on the $X(3930)$ and $X(3960)$ states with the $B^{-}\to K^{-}J/\psi \omega$ reaction
• Does the bottomonium counterpart of $X(3872)$ exist?
• Covalent hadronic molecules induced by shared light quarks
• Study of $D_{s1}(2460{)}^{+}\to D_s^{+}{\pi }^{+}{\pi }^{-}$ in $B\to {\bar{D}}^{(\ast )}{D}_s^{+}{\pi }^{+}{\pi }^{-}$ decays
• Unravelling Pentaquarks with Born--Oppenheimer effective theory
• Born-Oppenheimer Potentials for $SU(3)$ Gauge Theory
• $bb\bar{u}\bar{d}$ and $bs\bar{u}\bar{d}$ tetraquarks from lattice QCD using two-meson and diquark-antidiquark variational basis
• Lattice study of $cc\bar{u}\bar{s}$ tetraquark channel in $D^{(\ast )}{D}_s^{(\ast )}$ scattering
• Contribution of $Z_b$ resonances to ${\rm Y}(5S)\to \pi \pi \pi {\chi }_b$
• Masses and radiative decay widths of the $D_{s0}^{\ast }(2317)$ and $D_{s1}^{\prime }(2460)$ and their bottom analogs
• Observation of the open-charm tetraquark candidate $T_{cs0}^{\ast }(2870{)}^0$ in the $B^{-}\to D^{-}{D}^0{K}_{\mathrm{S}}^0$ decay
• Search for $X(3872)\to {\pi }^0{\chi }_{c0}$ and $X(3872)\to \pi \pi {\chi }_{c0}$ at BESIII
• Bottomonia in an unquenched quark model
• On the emergence of heavy quark spin symmetry breaking in heavy quarkonium decays
• A short review on the compositeness of the $X(3872)$
• First observation of ${\Lambda }_b^0\to {\Sigma }_c^{(\ast )++}{D}^{(\ast )-}{K}^{-}$ decays
• Role of multichannel pi pi scattering in decays of bottomia
• Decays of ${\rm Y}(10860)$ and ${\rm Y}(10753)$ into $\omega {\chi }_{bJ}$
• Phenomenology of $D_{s1}$ mesons radiative transitions
• 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
• Beauty Hadron Spectrum in a Screened Potential Model