35 papers found.

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Eur. Phys. J. C
Analysis of the Q Q Q¯ Q¯ tetraquark states with QCD sum rules
**Zhi**-**Gang** **Wang** 0
0 Department of Physics, North China Electric Power University , Baoding 071003 , People's Republic of

In this article, we assign \(\Omega _c(3000)\), \(\Omega _c(3050)\), \(\Omega _c(3066)\), \(\Omega _c(3090)\) and \(\Omega _c(3119)\) to the P-wave baryon states with \(J^P={\frac{1}{2}}^-\), \({\frac{1}{2}}^-\), \({\frac{3}{2}}^-\), \({\frac{3}{2}}^-\) and \({\frac{5}{2}}^-\), respectively, and study them with the QCD sum rules by introducing an explicit relative P-wave between ...

In this article, we assign Y(4274) to the color octet–octet type axialvector molecule-like state with \(J^{PC}=1^{++}\) tentatively, and construct the color octet–octet type axialvector current to study its mass and width with the QCD sum rules in details. The predicted mass favors assigning the Y(4274) to a color octet–octet type molecule-like state, but the predicted width ...

In this article, we tentatively assign the X(3915) and X(4500) to be the ground state and the first radial excited state of the axialvector–diquark–axialvector–antidiquark type scalar \(cs\bar{c}\bar{s}\) tetraquark states, respectively, assign the X(4700) to be the ground state vector–diquark–vector–antidiquark type scalar \(cs\bar{c}\bar{s}\) tetraquark state, and study their ...

In this article, we take X(4140) as the diquark–antidiquark type \(cs\bar{c}\bar{s}\) tetraquark state with \(J^{PC}=1^{++}\), and we study the mass and pole residue with the QCD sum rules in detail by constructing two types of interpolating currents. The numerical results \(M_{X_{L,+}}=3.95\pm 0.09\,\mathrm{GeV}\) and \(M_{X_{H,+}}=5.00\pm 0.10\,\mathrm{GeV}\) disfavor assigning ...

In this article, we assume that the nonet scalar mesons below \(1\,\mathrm { GeV}\) are the two-quark–tetraquark mixed states and study their masses and pole residues using the QCD sum rules. In the calculation, we take into account the vacuum condensates up to dimension 10 and the \(\mathcal {O}(\alpha _s)\) corrections to the perturbative terms in the operator product expansion. ...

In this article, we study the ground states and the first radial excited states of the tensor–tensor type scalar hidden-charm tetraquark states with the QCD sum rules. We separate the ground state contributions from the first radial excited state contributions unambiguously, and obtain the QCD sum rules for the ground states and the first radial excited states, respectively. Then ...

In this article, we construct the axialvector-diquark–axialvector-antidiquark type tensor current to interpolate both the vector- and the axialvector-tetraquark states, then calculate the contributions of the vacuum condensates up to dimension 10 in the operator product expansion, and we obtain the QCD sum rules for both the vector- and the axialvector-tetraquark states. The ...

Eur. Phys. J. C
Analysis of the strong decay X (5568) → Bs0π + with QCD sum rules
**Zhi**-**Gang** **Wang** 0
0 Department of Physics, North China Electric Power University , Baoding 071003 , People's Republic

In this article, we construct both the axialvector-diquark–axialvector-diquark–antiquark type and the axialvector-diquark–scalar-diquark–antiquark type interpolating currents, then calculate the contributions of the vacuum condensates up to dimension 10 in the operator product expansion, and we study the masses and pole residues of the \(J^P={\frac{1}{2}}^\pm \) hidden-charm ...

Aluminated mesoporous silica was prepared by multiple post-grafting of alumina onto uniform mesoporous SiO2, which was assembled from monodisperse SiO2 microspheres. Hydrodesulfurization (HDS) catalyst was prepared by loading Ni and Mo active components onto the aluminated uniform mesoporous SiO2, and its HDS catalytic performance was evaluated using hydrodesulfurization of ...

In this article, we construct the diquark–diquark–antiquark type interpolating currents, and we study the masses and pole residues of the \(J^P={\frac{3}{2}}^-\) and \({\frac{5}{2}}^+\) hidden charm pentaquark states in detail with the QCD sum rules by calculating the contributions of the vacuum condensates up to dimension-10 in the operator product expansion. In the calculations, ...

In this article, we present the scalar-diquark–scalar-diquark–antiquark type and scalar-diquark–axialvector-diquark–antiquark type pentaquark configurations in the diquark model, and study the masses and pole residues of the \(J^P={\frac{1}{2}}^\pm \) hidden-charm pentaquark states in detail with the QCD sum rules by extending our previous work on the \(J^P={\frac{3}{2}}^-\) and ...

In this article, we calculate the contributions of the vacuum condensates up to dimension-6 including the \({\mathcal {O}}(\alpha _s)\) corrections to the quark condensates in the operator product expansion, then we study the masses and decay constants of the pseudoscalar, scalar, vector, and axial-vector heavy-light mesons with the QCD sum rules in a systematic way. The masses of ...

Eur. Phys. J. C
Analysis of the
**Zhi**-**Gang** **Wang** 0
0 Department of Physics, North China Electric Power University , Baoding 071003 , People's Republic of China
In this article, we study the charmed

**Zhi**-**Gang** **Wang**
0
0
Department of Physics, North China Electric Power University
,
Baoding 071003
,
People's Republic of China
In the article, we assume the two scalar nonet mesons below and above 1

**Zhi**-**Gang** **Wang**
0
0
Department of Physics, North China Electric Power University
,
Baoding 071003
,
People's Republic of China
In this article, we take the Ds3(2860) and Ds1(2860) as the 13D3 and

**Zhi**-**Gang** **Wang**
0
0
Department of Physics, North China Electric Power University
, Baoding 071003,
People's Republic of China
In the article, we calculate the hadronic coupling
1 Introduction
22.7

In this article, we calculate the contributions of the vacuum condensates up to dimension 10 in the operator product expansion, and study the \(J^{PC}\!=0^{++}\) , \(1^{+-}\) , \(2^{++}\) \(D^*\bar{D}^*\) , \(D_s^*\bar{D}_s^*\) , \(B^*\bar{B}^*\) , \(B_s^*\bar{B}_s^*\) molecular states with the QCD sum rules. In the calculations, we use the formula \(\mu ...

The main purpose of this paper is to derive some criteria for concave conformal mappings. MSC: 30C55.