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Published:
, doi: 10.1088/1674-1137/44/1/013102

**Abstract:**

Mass spectra and wave functions of the doubly heavy baryons are computed assuming that the two heavy quarks inside a baryon form a compact heavy ‘diquark core’ in a color anti-triplet, and bind with the remaining light quark into a colorless baryon. The two reduced two-body problems are described by the relativistic Bethe-Salpeter equations (BSEs) with the relevant QCD inspired kernels. We focus on the doubly heavy baryons with

Published:
, doi: 10.1088/1674-1137/44/1/014104

**Abstract:**

The Bayesian neural network (BNN) method is proposed to predict the isotopic cross-sections in proton induced spallation reactions. Learning from more than 4000 data sets of isotopic cross-sections from 19 experimental measurements and 5 theoretical predictions with the SPACS parametrization, in which the mass of the spallation system ranges from 36 to 238, and the incident energy from 200 MeV/u to 1500 MeV/u, it is demonstrated that the BNN method can provide good predictions of the residue fragment cross-sections in spallation reactions.

Published:
, doi: 10.1088/1674-1137/44/2/023103

**Abstract:**

We study the contributions of intermediate bottomonium-like

*BR*

Published:
, doi: 10.1088/1674-1137/44/2/024001

**Abstract:**

Elastic scattering of

^{10}Be on a

^{208}Pb target was measured at

^{10}Be beam was produced at the Radioactive Ion Beam Line in Lanzhou of the Heavy-Ion Research Facility in Lanzhou. The angular distribution of elastic scattering in the

^{10}Be +

^{208}Pb system shows a typical Fresnel diffraction peak. Optical model analysis of the angular distribution was performed using the Woods-Saxon, double-folding and global potentials. With the global potential, different density distributions were used. The results indicate that different density distributions for the projectile induce distinct effects in the angular distribution.

Published:
, doi: 10.1088/1674-1137/44/2/023101

**Abstract:**

The thermalization process of the holographic entanglement entropy (HEE) of an annular domain is investigated in the Vaidya-AdS geometry. We determine numerically the Hubeny-Rangamani-Takayanagi (HRT) surface, which may be a hemi-torus or two disks, depending on the ratio of the inner radius to the outer radius of the annulus. More importantly, for some fixed ratio of the two radii, the annulus undergoes a phase transition, or a double phase transition, during thermalization from a hemi-torus to a two-disk configuration, or vice versa. The occurrence of various phase transitions is determined by the ratio of the two radii of the annulus. The rate of entanglement growth is also investigated during the thermal quench. The local maximal rate of entanglement growth occurs in the region with a double phase transition. Finally, if the quench process is sufficiently slow, which may be controlled by the thickness of the null shell, the region with a double phase transition vanishes.

Published:
, doi: 10.1088/1674-1137/44/2/024102

**Abstract:**

The coupled

Published:
, doi: 10.1088/1674-1137/44/2/024101

**Abstract:**

We investigate the mass spectrum of the

*S-*and

*P-*wave

*P-*wave

Published:
, doi: 10.1088/1674-1137/44/2/023102

**Abstract:**

The constituent quark model is used to compute the ground and excited state masses of

*QQQ*baryons containing either

*c*or

*b*quarks. The quark model parameters previously used to describe the properties of charmonium and bottomonium states were used in this analysis. The non-relativistic three-body bound state problem is solved by means of the Gaussian expansion method which provides sufficient accuracy and simplifies the subsequent evaluation of the matrix elements. Several low-lying states with quantum numbers

Published:
, doi: 10.1088/1674-1137/44/1/015104

**Abstract:**

This study set out to investigate charged vector particles tunneling via horizons of a pair of accelerating rotating charged NUT black holes under the influence of quantum gravity. To this end, we use the modified Proca equation incorporating generalized uncertainty principle. Applying the WKB approximation to the field equation, we obtain a modified tunneling rate and the corresponding corrected Hawking temperature for this black hole. Moreover, we analyze the graphical behavior of the corrected Hawking temperature

*a*and

*k*, and decreases with the increase in electric

*e*and magnetic charges

*g*.

Published:
, doi: 10.1088/1674-1137/44/1/013103

**Abstract:**

Theta-dependent gauge theories can be studied using holographic duality through string theory in certain spacetimes. By this correspondence we consider a stack of

*N*

_{0}dynamical D0-branes as D-instantons in the background sourced by

*N*

_{c}coincident non-extreme black D4-branes. According to the gauge-gravity duality, this D0-D4 brane system corresponds to Yang-Mills theory with a theta angle at finite temperature. We solve the IIA supergravity action by taking account into a sufficiently small backreaction of the Dinstantons and obtain an analytical solution for our D0-D4-brane configuration. Subsequently, the dual theory in the large

*N*

_{c}limit can be holographically investigated with the gravity solution. In the dual field theory, we find that the coupling constant exhibits asymptotic freedom, as is expected in QCD. The contribution of the theta-dependence to the free energy gets suppressed at high temperatures, which is basically consistent with the calculation using the Yang-Mills instanton. The topological susceptibility in the large

*N*

_{c}limit vanishes, and this behavior remarkably agrees with the implications from the simulation results at finite temperature. Moreover, we finally find a geometrical interpretation of the theta-dependence in this holographic system.

Published:
, doi: 10.1088/1674-1137/44/1/014002

**Abstract:**

We propose the transverse velocity (

Published:
, doi: 10.1088/1674-1137/44/1/015103

**Abstract:**

We study reheating in some one and two field realizations of fibre inflation. We find that reheating begins with a phase of preheating in which long wavelength fluctuation modes are excited. In two field models there is a danger that the parametric amplification of infrared fluctuations in the second scalar field - associated with an entropy mode - might induce an instability of the curvature fluctuations. We show that, at least in the models we consider, the entropy mode has a sufficiently large mass to prevent this instability. Hence, from the point of view of reheating the models we consider are well-behaved.

Published:
, doi: 10.1088/1674-1137/44/1/014103

**Abstract:**

The skyrmion stability at finite isospin chemical potential

Published:
, doi: 10.1088/1674-1137/44/1/013101

**Abstract:**

The heavy quark effective field theory (HQEFT) provides an effective way to deal with heavy meson decays. In this paper, we adopt two different correlators to derive the light-cone sum rules (LCSR) for the

*B*meson decays. Moreover, by using the right-handed correlator, the twist-2 terms are dominant in TFF

Published:
, doi: 10.1088/1674-1137/44/1/013001

**Abstract:**

The high-precision measurement of Higgs boson properties is one of the primary goals of the Circular Electron Positron Collider (CEPC). The measurements of

^{-1}

*e*

^{+}

*e*

^{-}collision data with the center-of-mass energy of 250 GeV. In this study the Higgs bosons are produced in association with a pair of leptons, dominantly mediated by the

*ZH*production process. The statistical uncertainty of the signal cross section is estimated to be about 1% in the

Published:
, doi: 10.1088/1674-1137/44/1/014101

**Abstract:**

We show that the

Published:
, doi: 10.1088/1674-1137/44/1/015102

**Abstract:**

In this paper, we investigate the quantum scalar fields in a massive BTZ black hole background. We study the entropy of the system by evaluating the entanglement entropy using a discretized approach. Specifically, we fit the results with a log -modified formula of the black hole entropy, which is introduced by quantum correction. The coefficients of leading and sub-leading terms affected by the mass of graviton are numerically analyzed.

Published:
, doi: 10.1088/1674-1137/44/1/013002

**Abstract:**

Measurements of decay asymmetry parameters of charmed baryons, e.g.,

*W*-emission and

*W*-exchange mechanisms controlled by strong and weak interactions. Taking advantage of the spin polarization in charmed baryon decays, we investigate the possibility to measure weak decay asymmetry parameters in the

Published:
, doi: 10.1088/1674-1137/44/1/014001

**Abstract:**

We use the latest results of the ultra-high accuracy 1

*S*-2

*S*

Published:
, doi: 10.1088/1674-1137/44/1/014102

**Abstract:**

Within the framework of the Lanzhou quantum molecular dynamics model, the deep subthreshold antiproton production in heavy-ion collisions has been investigated thoroughly. The elastic scattering, annihilation and charge exchange reactions associated with antiproton channels are implemented in the model. The attractive antiproton potential extracted from the

*G*-parity transformation of nucleon selfenergies reduces the threshold energies in meson-baryon and baryon-baryon collisions, and consequently enhances the antiproton yields to some extent. The calculated invariant spectra are consistent with the available experimental data. The primordial antiproton yields increase with the mass number of the colliding system. However, annihilation reactions reduce the antiproton production which becomes independent of the colliding partners. Anti-flow phenomena of antiprotons correlated with the mean field potential and annihilation mechanism is found by comparing them with the proton flows. Possible experiments at the high-intensity heavy-ion accelerator facility (HIAF) in China are discussed.

Published:
, doi: 10.1088/1674-1137/44/1/015101

**Abstract:**

The weak cosmic censorship conjecture in the near-extremal BTZ black hole has been tested using test particles and fields. It has been claimed that such a black hole can be overspun. In this paper, we review the thermodynamics and weak cosmic censorship conjecture in BTZ black holes using the scattering of a scalar field. The first law of thermodynamics in the non-extremal BTZ black hole is recovered. For the extremal and near-extremal black holes, due to the divergence of the variation of entropy, we test the weak cosmic censorship conjecture by evaluating the minimum of the function

*f*, and find that both the extremal and near-extremal black holes cannot be overspun.

**ISSN** 1674-1137 **CN** 11-5641/O4

Original research articles, Ietters and reviews Covering theory and experiments in the fieids of

- Particle physics
- Nuclear physics
- Particle and nuclear astrophysics
- Cosmology

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