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-wave 
states combining quark model and lattice QCD in the coupled channel frameworkYang, Z.*; Wang, G.-J.*; Wu, J.-J.*; Oka, Makoto; Zhu, S.-L.*
Journal of High Energy Physics (Internet), 2023(1), p.058_1 - 058_19, 2023/01
Times Cited Count：8 Percentile：72.04(Physics, Particles & Fields)Combining the quark model, the quark-pair-creation mechanism and 
interaction, we have investigated the near-threshold -wave states in the framework of the Hamiltonian effective field theory. With the heavy quark flavor symmetry, all the parameters are determined in the 
sector by fitting the lattice data. The masses of the bottom-strange partners of the 
and 
are predicted, which are well consistent with the lattice QCD simulation. The two -wave states are the mixtures of the bare 
core and component. Moreover, we find a crossing point between the energy levels with and without the interaction Hamiltonian in the finite volume spectrum in the 
case, which corresponds to a CDD (Castillejo-Dalitz-Dyson) zero in the 
-matrix of the 
scattering. This CDD zero will help deepen the insights of the near-threshold states and can be examined by future lattice calculation.
statesYang, Z.*; Wang, G.-J.*; Wu, J.-J.*; Oka, Makoto; Zhu, S.-L.*
Physical Review Letters, 128(11), p.112001_1 - 112001_6, 2022/03
Times Cited Count：35 Percentile：95.29(Physics, Multidisciplinary)A novel framework is proposed to extract near-threshold resonant states from finite-volume energy levels of lattice QCD and is applied to elucidate structures of the positive parity . The quark model, the quark-pair-creation mechanism and 
interaction are incorporated into the Hamiltonian effective field theory. The bare 
states are almost purely given by the states with heavy-quark spin bases. The physical 
and 
are the mixtures of bare core and component, while the 
and 
are almost dominated by bare 
. Furthermore, our model well reproduce the clear level crossing of the with the scattering state at a finite volume.
(3872)Meng, L.*; Wang, G.-J.*; Wang, B.*; Zhu, S.-L.*
Physical Review D, 104(9), p.094003_1 - 094003_8, 2021/11
Times Cited Count：27 Percentile：86.05(Astronomy & Astrophysics)The isospin violating decays of 
are revisited in a coupled-channel effective field theory. In a cutoff-independent formalism, we relate the coupling constants of with the two channels to the molecular wave function. The isospin violating decays of are obtained by two equivalent approaches, which amend some deficiencies about this issue in literature. In the quantum field theory approach, the isospin violating decays arise from the coupling constants of to two di-meson channels. In the quantum mechanics approach, the isospin violating is attributed to wave functions at the origin. We bridge the isospin violating decays of to its inner structure. Our results show that the proportion of the neutral channel in is over 80%. As a by-product, we find that the strong decay width and radiative decay width are about 30 keV and 10 keV, respectively, for the binding energy from -300 keV to -50 keV.
(3985) and (4000) as two different statesMeng, L.*; Wang, B.*; Wang, G.-J.*; Zhu, S.-L.*
Science Bulletin, 66(20), p.2065 - 2071, 2021/10
Times Cited Count：27 Percentile：86.05(Multidisciplinary Sciences)Two recently found tetraquark resonances (3985) and (4000) are studied in a solvable nonrelativistic effective field theory. We include the possible violations of heavy quark spin symmetry and SU(3) flavor symmetry in a comprehensive approach. Our results show that the decay rates can be used to judge whether these resonances can be different states or not.
with the strong and electromagnetic decaysMeng, L.*; Wang, G.-J.*; Wang, B.*; Zhu, S.-L.*
Physical Review D, 104(5), p.L051502_1 - L051502_8, 2021/09
Times Cited Count：79 Percentile：98.52(Astronomy & Astrophysics)We investigate the kinetically allowed strong and electromagnetic decays of the recently observed 
. Our results show that the decay width of 
is the largest one, which is just the experimental observation channel. Our theoretical total strong and radiative widths are in favor of the 
as a 
dominated bound state. Our calculation is cutoff-independent and without prior isospin assignment. The absolute partial widths and ratios of the different decay channels can be used to test the structure of state when the updated experimental results are available.
-wave statesWang, G.-J.*; Meng, L.*; Oka, Makoto; Zhu, S.-L.*
Physical Review D, 104(3), p.036016_1 - 036016_15, 2021/08
Times Cited Count：34 Percentile：89.36(Astronomy & Astrophysics)Radial excited states and -wave excited states of the fully charmed tetraquark spectrum was studied in the quark model. In the standard model settings, we find that several states may correspond to the observed X(6900) region. The possible quantum numbers are 
, 
, 
, and 
states.
statesWang, G.-J.*; Meng, L.*; Xiao, L.-Y.*; Oka, Makoto; Zhu, S.-L.*
European Physical Journal C, 81(2), p.188_1 - 188_12, 2021/02
Times Cited Count：36 Percentile：91.37(Physics, Particles & Fields)The mass spectrum and strong decays of the S-wave states are studied in the compact tetraquark scenario with the quark model. The model consists of the Coulomb, the linear confinement, and the hyperfine interactions. We calculate their decay amplitudes into the 
channels using the quark interchange method. The mass and decay width of the 
state are 
MeV and 
MeV, respectively, which indicates that it might be a good candidate for the recently observed 
state. We also obtain an isospin partner state 
with 
MeV and 
MeV, respectively. Future experimental search for 
will be very helpful.
WWang, H. X.*; Zhang, Y. H.*; Zhou, X. H.*; Liu, M. L.*; Ding, B.*; Li, G. S.*; Hua, W.*; Zhou, H. B.*; Guo, S.*; Qiang, Y. H.*; et al.
Physical Review C, 86(4), p.044305_1 - 044305_11, 2012/10
Times Cited Count：5 Percentile：32.09(Physics, Nuclear)Peng, J.; Hao, Y.*; Hu, S.*; Lin, M.; Katsumura, Yosuke
no journal, ,
The thermal stability of 1-allyl-3-methylimidazolium chloride ionic liquid ([Amim]Cl) was studied by using isothermal thermogravimetric analysis and TG/MS. In addition, the radiation stability of [Amim]Cl was investigated by using UV and NMR. During the heating process, the allyl side chain of [Amim]Cl appears to associate with anion Cl and dissociate from imidazole ring with equal probability as the methyl group does. During the 
irradiation, although the darkening of color in irradiated [Amim]Cl was observed, the chemical structure of [Amim]Cl is stable at dose of 500 kGy under nitrogen atmosphere.
Wang, G.-J.*
no journal, ,
Radial excited states and P-wave excited states of the fully-charmed tetraquark spectrum was studied in the quark model. In the standard model settings, we find that several states may correspond to the observed X(6900) region. The possible quantum numbers are , , , and states.
Wang, G.-J.*
no journal, ,
Radial excited states and P-wave excited states of the fully-charmed tetraquark spectrum was studied in the quark model. In the standard model settings, we find that several states may correspond to the observed X(6900) region. The possible quantum numbers are , , , and states.
Wang, G.-J.*
no journal, ,
In this talk, I will discuss a novel framework to extract resonant states from finite-volume energy levels of lattice QCD and apply it to elucidate structures of the positive parity Ds resonant states nearby the DK and D*K thresholds. In the framework, the Hamiltonian effective field theory is extended by combining it with the quark model. The Hamiltonian contains the bare mesons from the quark model, its coupling with the threshold channels described by quark-pair-creation (QPC) model, and the channel-channel interactions induced by exchanging light mesons. A successful fit of the finite-volume energy levels of lattice QCD with the Hamiltonian model is made. The extracted masses and the predication for an additional state, Ds(2573), are well consistent with experimental measurements. The same framework has also be extended to the P-wave states.
Wang, G.-J.*
no journal, ,
Combination of the recent quark model and lattice QCD results for Ds and Bs mesons is achieved and the structures of these mesons are discussed.
