In-medium pion valence distributions in a light-front model by J.P.B.C. de Melo, K. Tsushima, I. Ahmed

“…Pion valence distributions in nuclear medium and vacuum are studied in a light-front constituent quark model. The in-medium input for studying the pion properties is calculated by the quark-meson coupling model. …”
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NON-STRANGE VECTOR-MESON PRODUCTION IN K-P INTERACTIONS AT 4.2 GEV-C by Losty, M, Holmgren, S, Aguilarbenitez, M, Barreiro, F, Hemingway, R, Worden, R, Massaro, G, Blokzijl, R, Kluyver, J, Wolters, G, Timmermans, J, Vergeest, J, Vandewalle, R, Wells, J, Foster, B, Grossmann, P, Lyons, L

“…The results are compared with duality and quark model predictions, as well as used to test current ideas in two-body phenomenology. © 1978.…”

Baryon magnetic moments in a simultaneous expansion in 1/N and ms. by Luty, M, March-Russell, J, White, M

“…At leading order in this expansion, the magnetic moments obey the non-relativistic quark-model relations. We compute corrections to these relations using an effective lagrangian formalism which respects chiral symmetry to all orders in the $1/N$ expansion. …”

Exploring the internal structure of exotic resonances with ALICE by Padhan Sonali

“…In the last decade, several resonances in the mass range 1000-2000 MeV/c2 have emerged that cannot be explained by the quark model. The internal structure of exotic resonances such as f0, f1, and f2 is currently unknown. …”
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K0Λ photoproduction off the neutron with nucleon resonances by Sang-Ho Kim, Hyun-Chul Kim

“…The strong couplings of nucleon resonances with KΛ vertices are constrained by quark model predictions. The numerical results of the total and differential cross sections are found to be in qualitative agreement with the recent CLAS and FOREST experimental data. …”
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Quasi-fractionalization of edge spin in chirality-assisted cluster-based Haldane state on triangular spin tube by Takanori Sugimoto, Takami Tohyama

“…Abstract Fractionalization of quantum degrees of freedom holds the key to finding new phenomena in physics, e.g., the quark model in hadron physics and the spin-charge separation in strongly-correlated electron systems. …”
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A Multiquark Approach to Excited Hadrons and Regge Trajectories by S. S. Afonin

“…The resulting classification of light mesons turns out to be in a better agreement with the experimental observations than the standard quark model classification. It is argued that the total energy of quark components should be proportional to the hadron mass squared rather than the linear mass. …”
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Spectroscopic behavior of fully heavy tetraquarks by Hong-Tao An, Si-Qiang Luo, Zhan-Wei Liu, Xiang Liu

“…Abstract Stimulated by the observation of the X(6900) from LHCb in 2020 and the recent results from CMS and ATLAS in the di- $$J/\psi $$ J / ψ invariant mass spectrum, in this work we systematically study all possible configurations for the ground states of fully heavy tetraquark in the constituent quark model. By our calculation, we present their spectroscopic behaviors including binding energy, lowest meson–meson thresholds, specific wave function, magnetic moment, transition magnetic moment, radiative decay width, rearrangement strong width ratio, internal mass contributions, relative lengths between (anti)quarks, and the spatial distribution of four valence (anti)quarks. …”
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Search for long-lived massive charged particles in 1.96 TeV pp collisions. by Aaltonen, T, Adelman, J, Akimoto, T, Alvarez González, B, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Apresyan, A, Arisawa, T, Artikov, A, Ashmanskas, W, Attal, A, Aurisano, A, Azfar, F, Badgett, W, Barbaro-Galtieri, A, Barnes, V, Barnett, B, Barria, P, Bartsch, V, Bauer, G, Beauchemin, P

“…We set an upper bound on the production cross section and, interpreting this result within the context of a stable scalar top-quark model, set a lower limit on the particle mass of 249 GeV/c2 at 95% C.L.…”

Doubly charmed multibaryon systems by H. Garcilazo, A. Valcarce

“…All two-baryon interactions are consistently derived from a constituent quark model tuned in the light-flavor hadron phenomenology: spectra and interactions. …”
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Spin-1 quarkonia in a rotating frame and their spin contents by HyungJoo Kim, Sungtae Cho, Su Houng Lee

“…Specifically, we find the spin contents of J/ψ, χc1, ϒ(1S), and χb1 are slightly different from the naive quark model picture. For example, the J/ψ is traditionally considered as an S-wave particle, but we find quarks do not carry all of the total spin.…”
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Branching fractions and polarizations of D→Vℓν_{ℓ} within QCD light-cone sum rule by Hai-Bing Fu, Wei Cheng, Long Zeng, Dan-Dan Hu, Tao Zhong

“…Our predictions are consistent with covariant confining quark model results within errors. Thus, we think the LCSR approach for HFFs is applicable for dealing with the D-meson semileptonic decays.…”
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Pseudoscalar mesons from a PNJL model at zero temperature by R. M. Aguirre, O. Lourenço

“…We use a recently proposed phenomenological quark model, known as the PNJL0, which takes into account the confinement/deconfinement phase transition by means of the traced Polyakov loop ( $$\varPhi $$ Φ ) which serves as an order parameter at zero temperature. …”
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Study of the spectra and decay widths of singly heavy baryons by García-Tecocoatzi H., Giachino A., Ramirez-Morales A., Rivero-Acosta A., Santopinto E., Vaquera-Araujo C.A.

“…The masses of singly heavy baryons up to the D-wave are calculated within a constituent quark model, employing the three-quark and quarkdiquark schemes. …”
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Off-shell generalized parton distributions and form factors of the pion by Wojciech Broniowski, Vanamali Shastry, Enrique Ruiz Arriola

“…We provide an explicit realization in terms of a chiral quark model, where we show that the off-shell effects in GPDs are potentially significant in modeling physical processes and should not be neglected.…”
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The newly observed $$\Lambda _b(6072)^0$$ Λb(6072)0 structure and its $$\rho $$ ρ -mode nonstrange partners by Wei Liang, Qi-Fang Lü

“…These two states have good potentials to be observed in future experiments, which may help us to distinguish the three-quark model and diquark model.…”
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Does the JPC = 1+− counterpart of the X(3872) exist? by Pablo G. Ortega, David R. Entem, Francisco Fernández

“…We explore the possible existence of the JPC=1+− counterpart of the X(3872) state in a coupled-channels calculation within a constituent quark model, with the aim of confirming the existence of the so-called X˜(3872) state observed by the COMPASS Collaboration. …”
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Intriguing aspects of light baryon resonances by Khemchandani K. P., Martínez Torres A., Kim Sang-Ho, Nam Seung-il, Hosaka A., Nagahiro H.

“…Besides pointing out the hadron resonances which clearly require description beyond the quark model, we focus on the third s11, N∗ state and its decay to final states consisting of the lightest hyperon resonances which have a partial width comparable to that for the decay to πN. …”
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Search for radiative penguin decays B+ → ρ+γ,B0 → ρ0γ, and B0 → ωγ by Aubert, B, Barate, R, Boutigny, D, Couderc, F, Gaillard, J, Hicheur, A, Karyotakis, Y, Lees, J, Tisserand, V, Zghiche, A, Palano, A, Pompili, A, Chen, J, Qi, N, Rong, G, Wang, P, Zhu, Y, Eigen, G, Ofte, I, Stugu, B, Abrams, G, Borgland, A, Breon, AB, Brown, D, Button-Shafer, J

“…We set the following limits on the individual branching fractions: ℬ(B+ → rho;+γ] < 1.8 × 10-6, ℬ(B0 → ρ0γ < 0.4 × 10-6, and Bscr;(B0 → ωγ) < 1.0 × 10-6 at the 90% confidence level. We use the quark model to limit the combined branching fraction Bscr;̄[B → (ρ/ω) γ] < 1.2 × 10-6, from which we determine a constraint on the ratio of Cabibbo-Kobayashi-Maskawa matrix elements |Vtd|/ |Vts|. © 2005 The American Physical Society.…”

Highly excited B, B s and B c meson spectroscopy from lattice QCD by Luke Gayer, Sinéad M. Ryan, David J. Wilson, for the Hadron Spectrum collaboration

“…Working with a large basis of carefully constructed, approximately-local q q ¯ $$ q\overline{q} $$ -like operators we determine a rich spectrum of states up to J = 4 in B, B s and B c , that can be grouped into patterns matching those of the quark model. In addition, hybrid-like states are identified at approximately 1500 MeV above the ground states in each of B, B s and B c , in a multiplet pattern already found in similar computations at a range of quark masses spanning light to bottom. …”
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