Hadron spectroscopy
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Muon <i>g</i> – 2 theory: The hadronic part Open
I present a status report of the hadronic vacuum polarization effects for the muon g –2, to be considered as an update of [1]. The update concerns recent new inclusive R measurements from KEDR in the energy range 1.84 to 3.72 GeV. For the …
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Doubly-hidden scalar heavy molecules and tetraquarks states from QCD at NLO Open
Alerted by the recent LHCb discovery of exotic hadrons in the range (6.2 -- 6.9) GeV, we present new results for the doubly-hidden scalar heavy $(\bar QQ) (Q\bar Q)$ charm and beauty molecules using the inverse Laplace transform sum rule (…
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Mass spectra of doubly heavy tetraquarks in an improved chromomagnetic interaction model Open
Doubly heavy tetraquark states are the prime candidates for tightly bound exotic states. We present a systematic study of the mass spectra of the $S$-wave doubly heavy tetraquark states $QQ\bar{q}\bar{q}$ ($q=u, d, s$ and $Q=c, b$) with di…
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Hadronic spectra from deformed AdS backgrounds * Open
Because of the presence of modified warp factors in metric tensors, we use deformed AdS 5 spaces to apply the AdS/CFT correspondence to calculate the spectra for even and odd glueballs, scalar and vector mesons, and baryons with different …
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Tetraquarks and Pentaquarks from Quark Model Perspective Open
According to the classification of the quark model, the hadrons going beyond three-quark baryon and quark-antiquark meson pictures are called exotic hadrons. Many new hadrons have been observed since 2003, some of which exhibit exotic beha…
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Spectroscopy of exotic hadrons formed from dynamical diquarks Open
The dynamical diquark picture asserts that exotic hadrons can be formed from widely separated colored diquark or triquark components. We use the Born-Oppenheimer (BO) approximation to study the spectrum of states thus constructed, both in …
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Hadronic structure on the light front. I. Instanton effects and quark-antiquark effective potentials Open
This is the first of a sequence of papers that addresses the nonperturbative origin of the central and spin-dependent forces between quarks. Its main thrust is a focus on meson spectroscopy in the center-of-mass frame. We suggest a novel “…
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Hadron Spectroscopy and Resonances : Review Open
I review recent results on hadron spectroscopy using lattice QCD. In light of the discoveries in heavy baryon sector at LHCb over the past few years, lattice calculations in this regard are emphasized. Investigations on light baryon, heavy…
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Highlights of light meson spectroscopy at the BESIII experiment Open
Hadron spectroscopy provides a way to understand the dynamics of the strong interaction. For light hadron systems, only phenomenological models or lattice quantum chromodynamics (QCD) are applicable, because of the failure of perturbation …
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Strange Hadron Spectroscopy with Secondary KL Beam in Hall D Open
We propose to create a secondary beam of neutral kaons in Hall D at Jefferson Lab to be used with the GlueX experimental setup for strange hadron spectroscopy. The superior CEBAF electron beam will enable a flux on the order of $1\times 10…
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Narrow pentaquarks as diquark–diquark–antiquark systems Open
The diquark–diquark–antiquark model describes pentaquark states both in terms of quarks and hadrons. The latest LHCb data for pentaquarks with open charm emphasize the importance of hadron components in the structure of pentaquarks. We dis…
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Heavy-light mesons beyond the ladder approximation Open
The heavy-light mesons are studied within the framework of Dyson-Schwinger equations of QCD. Inspired by the axial-vector Ward-Takahashi identity resulting from the chiral symmetry, we propose a truncation scheme beyond the ladder approxim…
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Hadronic structure on the light front. V. Diquarks, nucleons, and multiquark Fock components Open
This work is a continuation in our series of papers that addresses quark models of hadronic structure on the light front, motivated by the QCD vacuum structure and lattice results. In this paper we focus on the importance of diquark correl…
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Spectroscopy using the Anisotropic Clover Action Open
The calculation of the light-hadron spectrum in the quenched approximation to QCD using an anisotropic clover fermion action is presented. The tuning of the parameters of the action is discussed, using the pion and rho dispersion relation.…
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Identifying spin and parity of charmonia in flight with lattice QCD Open
The spectrum of charmonium resonances contains a number of unanticipated states along with several conventional quark-model excitations. The hadrons of different quantum numbers $J^P$ appear in a fairly narrow energy band, where $J^P$ refe…
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Heavy Baryon Spectroscopy in the Relativistic Quark Model Open
Masses of heavy baryons are calculated in the framework of the relativistic quark-diquark picture and QCD. The obtained results are in good agreement with available experimental data including recent measurements by the LHCb Collaboration.…
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Optimizing creation operators for charmonium spectroscopy on the lattice Open
Smearing the bare quantum fields in lattice calculations before applying composite hadron creation operators has a long record of substantially improving overlaps onto low-lying energy eigenstates. A technique called distillation which def…
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Light-Front Holography and Supersymmetric Conformal Algebra: A Novel Approach to Hadron Spectroscopy, Structure, and Dynamics Open
We give an overview of recent progress into the infrared structure of QCD based on the gauge/gravity correspondence and light-front quantization, where the color confining interaction for mesons and baryons is determined by an underlying s…
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Charmed baryons on the lattice Open
We discuss the significance of charm baryon spectroscopy in hadron physics and review the recent developments of the spectra of charmed baryons in lattice calculations. Special emphasis is given on the recent studies of highly excited char…
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Meson spectroscopy from spectral densities in lattice gauge theories Open
Spectral densities encode nonperturbative information that enters the calculation of a plethora of physical observables in strongly coupled field theories. Phenomenological applications encompass aspects of standard-model hadronic physics,…
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Physics Program of the Super Tau-Charm Factory Open
In this talk, I present the potential physics program of the super $\tau$-charm factory (STCF). The STCF is an electron-positron collider with a center-of-mass energy ranging from 2 to 7 GeV and an instantaneous luminosity greater than $0.…
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Hadron Spectroscopy with Lattice QCD Open
The status and prospects for investigations of exotic and conventional hadrons with lattice QCD are discussed. The majority of hadrons decay strongly via one or multiple decay-channels, including most of the experimentally discovered exoti…
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P-wave dynamical generated state and LHCb hidden-charmed pentaquarks Open
The P-wave dynamical generated state, as well as S-wave state, from hadron-hadron interactions through exchanging light hadron is investigated explicitly to understand the properties, especially spin-parities, of the hidden-charmed exotic …
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Status of charmed meson spectroscopy Open
The discovery of the ground state positive-parity charm-strange and charm-nonstrange mesons $ D_{s0}^* $(2317), D s 1 (2460), $ D_0^* $(2400) and D 1 (2430) in 2003 and 2004 brought up several mysteries related to their masses. Here I brie…
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Strange Hadron Spectroscopy with a Secondary KL Beam at GlueX Open
We propose to create a secondary beam of neutral kaons in Hall D at Jefferson Lab to be used with the GlueX experimental setup for strange hadron spectroscopy. A flux on the order of 3 x 10^4 KL/s will allow a broad range of measurements t…
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Workshop on High-Intensity Photon Sources (HIPS2017) Mini-Proceedings Open
This workshop aimed at producing an optimized photon source concept with potential increase of scientific output at Jefferson Lab, and at refining the science for hadron physics experiments benefitting from such a high-intensity photon sou…
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Review on Hadron Spectroscopy Open
I review some of the lattice results on spectroscopy and resonances in the past years. For the conventional hadron spectrum computations, focus has been put on the isospin breaking effects, QED effects, and simulations near the physical pi…
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The experiment PANDA: physics with antiprotons at FAIR Open
\nPANDA is an experiment that will run at the future facility FAIR, Darmstadt, Germany. A high intensity and cooled antiproton beam will collide on a fixed hydrogen or nuclear target covering center-of-mass energies between 2.2 and 5.5 GeV…
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Models and potentials in hadron spectroscopy Open
In the past twenty years, hadron spectroscopy has made immense progress. Experimental facilities have observed different multiquark states during these years. There are different models and phenomenological potentials to study the nature o…
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GGI Lectures on Exotic Hadrons Open
It is well known that M. Gell-Mann, introducing quarks in 1964 to describe the known mesons and baryons, hinted at the existence of further $qq\bar q\bar q$ mesons (tetraquarks) and $qqqq\bar q$ baryons (pentaquarks). In 1977, R. Jaffe pro…