Novel approaches in Hadron Spectroscopy

Abstract

The last two decades have witnessed the discovery of a myriad of new and unexpected hadrons. The future holds more surprises for us, thanks to new-generation experiments. Understanding the signals and determining the properties of the states requires a parallel theoretical effort. To make full use of available and forthcoming data, a careful amplitude modeling is required, together with a sound treatment of the statistical uncertainties, and a systematic survey of the model dependencies. We review the contributions made by the Joint Physics Analysis Center to the field of hadron spectroscopy.

98 pages, 58 figures. To appear in Progress in Particle and Nuclear Physics

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• Parton distributions in the LHC era: MMHT 2014 PDFs
• Multiquark Resonances
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• Ab initio calculation of the neutron-proton mass difference
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• The Physics of Glueballs
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• A relativistic, model-independent, three-particle quantization condition
• Effective Kbar N interaction based on chiral SU(3) dynamics
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• Hybrid Mesons
• Mesonic low-energy constants
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• Study of $P_c(4457)$, $P_c(4440)$, and $P_c(4312)$ in a quasipotential Bethe-Salpeter equation approach
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• A Discussion on Triangle Singularities in the ${\Lambda }_b\to J/\psi K^{-}p$ Reaction
• Three-body Unitarity in the Finite Volume
• Interpretation of the LHCb $P_c$ States as Hadronic Molecules and Hints of a Narrow $P_c(4380)$
• The K^*_0(800) scalar resonance from Roy-Steiner representations of pi K scattering
• Scalar mesons in a finite volume
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• Three-particle quantization condition in a finite volume: 1. The role of the three-particle force
• Identification of a Scalar Glueball
• Study of the electromagnetic transition form-factors in η-> μ^+μ^-γand ω-> μ^+μ^-π^0 decays with NA60
• Anatomy of the newly observed hidden-charm pentaquark states: $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$
• Dispersive analysis of omega --> 3pi and phi --> 3pi decays
• Isospin breaking decays as a diagnosis of the hadronic molecular structure of the $P_c(4457)$
• $\eta \to 3\pi$ at Two Loops In Chiral Perturbation Theory
• Scalar mesons moving in a finite volume and the role of partial wave mixing
• Is f0(1710) a glueball?
• Parton Distributions in Nucleons and Nuclei
• Interpretation of the Narrow $J/\psi p$ Peaks in ${\Lambda }_b\to J/\psi p{K}^{-}$ Decay in the Compact Diquark Model
• On the nature of $a_1(1420)$
• Implementing the three-particle quantization condition including higher partial waves
• Roy-Steiner equations for pion-nucleon scattering
• Three-body Unitarity with Isobars Revisited
• Odd and Even Partial Waves of $\eta {\pi }^{-}$ and ${\eta }^{\prime }{\pi }^{-}$ in ${\pi }^{-}p\to {\eta }^{(\prime )}{\pi }^{-}p$ at $191\text{GeV}/c$
• Quark-Model Identification of Baryon Ground and Resonant States
• Scalar isoscalar mesons and the scalar glueball from radiative $J/\psi$ decays
• The "$a_1(1420)$" peak as the $\pi f_0(980)$ decay mode of the $a_1(1260)$
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• Estimating the Production Rate of Loosely-bound Hadronic Molecules using Event Generators
• The decay $\eta \to 3\pi$: study of the Dalitz plot and extraction of the quark mass ratio $Q$
• Dispersion relations for ${\gamma }^{\ast }{\gamma }^{\ast }\to \pi \pi$: helicity amplitudes, subtractions, and anomalous thresholds
• Confirmation of a pi_1^0 Exotic Meson in the ηπ^0 System
• Relevance of complex branch points for partial wave analysis
• Strong QCD Insights from Excited Nucleon Structure Studies with CLAS and CLAS12
• Note on X(3872) production at hadron colliders and its molecular structure
• Production of $X(3872)$ at High Multiplicity
• A dispersive analysis of the pion vector form factor and ${\tau }^{-}\to K^{-}{K}_S{\nu }_{\tau }$ decay
• The Kl3 scalar form factors in the standard model
• Precise determination of resonance pole parameters through Padé approximants
• Evidence for the $N^{\prime }(1720)3/2^{+}$ Nucleon Resonance from Combined Studies of CLAS ${\pi }^{+}{\pi }^{-}p$ Photo- and Electroproduction Data
• Dalitz-plot decomposition for three-body decays
• Model Selection for Pion Photoproduction
• Baryonic mass formula in large $N_c$ QCD versus quark model
• Dispersive Approach to Chiral Perturbation Theory
• Pole positions and residues from pion photoproduction using the Laurent+Pietarinen expansion method
• The Hydrogen Bond of QCD
• eta(1405) in a chiral approach based on mixing of the pseudoscalar glueball with the first radial excitations of eta and eta'
• Central exclusive diffractive production of $K^{+}{K}^{-}{K}^{+}{K}^{-}$ via the intermediate $\varphi \varphi$ state in proton-proton collisions
• Properties of Nucleon Resonances by means of a Genetic Algorithm
• Small- and large-x nucleon spin structure from a global QCD analysis of polarized Parton Distribution Functions
• Constraints on the $\omega \pi$ form factor from analyticity and unitarity
• Constraints on a possible dineutron state from pionless EFT
• Chiral extrapolation and determination of low-energy constants from lattice data
• A New Approach to the 3D Faddeev Equation for Three-Body Scattering
• Precision measurement of the branching fractions of J/psi -> pi+pi-pi0 and psi' -> pi+pi-pi0
• Exclusive tensor meson photoproduction
• Pole structure from energy-dependent and single-energy fits to $\pi N$ elastic scattering data
• Flavor structure of $\Lambda$ baryons from lattice QCD: From strange to charm quarks
• What does kinematical target mass sensitivity in DIS reveal about hadron structure?
• On the Spin of the X(3872)
• Semi-inclusive lepto-production of hidden-charm exotic hadrons
• Analysis of DIS structure functions of the nucleon within truncated Mellin moments approach
• Photoproduction of the $f_2(1270)$ meson using the CLAS detector

Cited by in corpus (28)

• An updated review of the new hadron states
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• Towards a theory of hadron resonances
• Precision Studies of QCD in the Low Energy Domain of the EIC
• Physics-Driven Learning for Inverse Problems in Quantum Chromodynamics
• A combined analysis of the $Z_c(3900)$ and the $Z_{cs}(3985)$ exotic states
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• Strongly Bound Dibaryon with Maximal Beauty Flavor from Lattice QCD
• Revealing the nature of hidden charm pentaquarks with machine learning
• Quarkonium spectroscopy of the linear plus modified Yukawa potential
• Scalar and tensor charmonium resonances in coupled-channel scattering from QCD
• Decay behaviors of the fully-bottom and fully-charm tetraquark states
• Charmonium ${\chi }_{c0}$ and ${\chi }_{c2}$ resonances in coupled-channel scattering from lattice QCD
• Precise determination of the pole position of the exotic $Z_c(3900)$
• Study for a model-independent pole determination of overlapping resonances
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• XYZ spectroscopy at electron-hadron facilities II: Semi-inclusive processes with pion exchange
• Hadronic molecular states with the quark contents $bc\bar{s}\bar{q}$, $b\bar{c}s\bar{q}$, and $b\bar{c}\bar{s}q$
• Interpretation of near-threshold peaks using the method of independent S-matrix poles
• Khuri-Treiman analysis of $J/\psi \to {\pi }^{+}{\pi }^{-}{\pi }^0$
• Analytical dispersive parameterization for elastic scattering of spinless particles
• XYZ spectroscopy at electron-hadron facilities III: Semi-inclusive processes with vector exchanges
• Doubly-charmed pentaquark states in a mass splitting model
• $Z_c(3900)$ in a hadronic molecule and a triangle singularity approach at finite temperature
• Multimodal Fragmentation of All-Heavy Pentaquarks: Uncertainty-Aware Predictions for Hadron Colliders
• Phenomenological description of the ${\pi }^{-}{\pi }^{+}$ $S$-waves in $D^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$ and $D_s^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$ decays: The problem of phases
• Dalitz-plot decomposition for the $e^{+}{e}^{-}\to J/\psi \pi \pi (K\bar{K})$ and $e^{+}{e}^{-}\to h_c\pi \pi$ processes
• Exotic hadrons associated with $b$-quark