## Current Issue

Display Method: |

2022, 46(12): 122001. doi: 10.1088/1674-1137/ac89d0

**Abstract:**

Conceptually, radii are amongst the simplest Poincaré-invariant properties that can be associated with hadrons and light nuclei. Accurate values of these quantities are necessary so that one may judge the character of putative solutions to the strong interaction problem within the Standard Model. However, limiting their ability to serve in this role, recent measurements and new analyses of older data have revealed uncertainties and imprecisions in the radii of the proton, pion, kaon, and deuteron. In the context of radius measurement using electron+hadron elastic scattering, the past decade has shown that reliable extraction requires minimisation of bias associated with practitioner-dependent choices of data fitting functions. Different answers to that challenge have been offered; and this perspective describes the statistical Schlessinger point method (SPM), in unifying applications to proton, pion, kaon, and deuteron radii. Grounded in analytic function theory, independent of assumptions about underlying dynamics, free from practitioner-induced bias, and applicable in the same form to diverse systems and observables, the SPM returns an objective expression of the information contained in any data under consideration. Its robust nature and versatility make it suitable for use in many branches of experiment and theory.

2022, 46(12): 122002. doi: 10.1088/1674-1137/ac87f1

**Abstract:**

It is well known that when vacuum polarization emerges in quantum electrodynamics, the non-linear interaction between electromagnetic fields should be considered. Moreover, the corresponding field of non-linear electrodynamics can have important effects on black hole physics. In this work, we focus on the relationship between an observable quantity, that is, the shadow radius, and the first-order phase transition of non-linear charged AdS black holes in the framework of Einstein-power-Yang-Mills gravity. The results show that, under a certain condition, there exists a first-order phase transition from the viewpoint of both the shadow radius and horizon radius, which depend on temperature (or pressure). From the viewpoint of the shadow radius, the phase transition temperature is higher than that from the viewpoint of the horizon radius under the same condition. This may be due to the non-linear Yang Mills charge and the gravitational effect. This indicates that the shadow radius can be regarded as a probe to reveal the thermodynamic phase transition information of black holes. The thermal profiles of coexistent large and small black hole phases when the system is undergoing the phase transition are presented for two different values of the non-linear Yang Mills charge parameter:

2022, 46(12): 123001. doi: 10.1088/1674-1137/ac8bc9

**Abstract:**

JUNO is a multi-purpose neutrino observatory under construction in the south of China. This publication presents new sensitivity estimates for the measurement of the

2022, 46(12): 123101. doi: 10.1088/1674-1137/ac878c

**Abstract:**

Exclusive

2022, 46(12): 123102. doi: 10.1088/1674-1137/ac8789

**Abstract:**

A three Higgs-doublet model exhibiting

2022, 46(12): 123103. doi: 10.1088/1674-1137/ac88bd

**Abstract:**

The perturbative quantum chromodynamics (PQCD) approach based on

*B*decays. By regulating the endpoint divergence by the transverse momentum of quarks in the propagators, one can perform the perturbation calculation for various diagrams, including annihilation type diagrams. In this paper, we review the current status of the PQCD factorization calculation of two-body charmless

*B*decays, which are calculated in the PQCD approach up to NLO. The results are compared with those of the QCD factorization approach, soft-collinear effective theory approach, and current experimental measurements. For most of the considered

*B*meson decays, the PQCD results for branching ratios agree well with those of other approaches and experimental data. The PQCD predictions for the

*CP*asymmetries of penguin-dominated

*B*decay modes. These rare decays are more sensitive to different types of corrections, providing an opportunity to examine the factorization approach with more precise experimental measurements.

2022, 46(12): 123104. doi: 10.1088/1674-1137/ac88bb

**Abstract:**

In the framework of the 3-3-1 model with neutral leptons, we investigate lepton-flavor-violating sources based on the Higgs mass spectrum, which has two neutral Higgs identified with the corresponding ones of the two-Higgs-doublet model. We note that at the

2022, 46(12): 123105. doi: 10.1088/1674-1137/ac89d1

**Abstract:**

In this study, we investigate quasi-two-body

*CP*averaged branching ratios of the

*B*decays in the three-body framework than the two-body framework. We also predict direct

*CP*asymmetries for the considered decay modes and find that

*B*meson experiments.

2022, 46(12): 123106. doi: 10.1088/1674-1137/ac8c21

**Abstract:**

Motivated by the analogous properties of

*A*denotes the axialvector diquark states, and explore

2022, 46(12): 123107. doi: 10.1088/1674-1137/ac8cd5

**Abstract:**

The

*W*mass determination at the Tevatron CDF experiment reported a deviation from the SM expectation at the 7

*σ*level. We discuss a few possible interpretations and their collider implications. We perform electroweak global fits under various frameworks and assumptions. We consider three types of electroweak global fits in the effective-field-theory framework: the

*S*-

*T*,

*S*-

*T*-

2022, 46(12): 123108. doi: 10.1088/1674-1137/ac92d8

**Abstract:**

We study a double covering of modular

*χ*square numerical analysis, we demonstrate that both scenarios produce some predictions in case of normal hierarchy reproducing neutrino oscillation data. However, no solution satisfies the neutrino oscillation data in case of radiative seesaw of inverted hierarchy.

2022, 46(12): 123109. doi: 10.1088/1674-1137/ac92da

**Abstract:**

We conducted a detailed study on the properties of the total decay width of the Higgs decay channel

2022, 46(12): 123110. doi: 10.1088/1674-1137/ac930b

**Abstract:**

We study the dependence of the transverse mass distribution of charged leptons and the missing energy on parton distributions (PDFs) adapted to

*W*boson mass measurements at the CDF and ATLAS experiments. We compare the shape variations of the distribution induced by different PDFs and find that the spread of predictions from different PDF sets can be significantly larger than the PDF uncertainty predicted by a specific PDF set. We suggest analyzing the experimental data using up-to-date PDFs to gain a better understanding of the PDF uncertainties in

*W*boson mass measurements. We also perform a series of Lagrange multiplier scans to identify the constraints on the transverse mass distribution imposed by individual data sets in the CT18 global analysis. In the case of the CDF measurement, the distribution is mostly sensitive to

*d*-quark PDFs in the intermediate

*x*region, which are largely constrained by DIS and Drell-Yan data on deuteron targets and Tevatron lepton charge asymmetry data.

2022, 46(12): 123111. doi: 10.1088/1674-1137/ac8651

**Abstract:**

In this study, the magnetic moments of hidden-charm strange pentaquark states with quantum numbers

2022, 46(12): 124001. doi: 10.1088/1674-1137/ac878a

**Abstract:**

The flux-averaged cross-sections

*γ*-ray spectrometric techniques. Theoretical calculation of the flux-average cross-sections

2022, 46(12): 124101. doi: 10.1088/1674-1137/ac8867

**Abstract:**

The influence of the neck parameter on the fission dynamics at low excitation energy is studied based on the three-dimensional Langevin approach, in which the nuclear shape is described with the two-center shell model (TCSM) parametrization, and the elongation, mass asymmetry, and fragment deformation are set to be the generalized coordinates of the Langevin equation. We first study the influence of the neck parameter on the scission configuration. We find that there is almost no obvious correlation between the neck parameter

*η*at the scission point, indicating that

*η*at the scission point are clearly influenced by the neck parameter

*n*+

*n*+

2022, 46(12): 124102. doi: 10.1088/1674-1137/ac8a8c

**Abstract:**

The level structure of the double-magic nucleus

^{34}Si (

*Z*= 14,

*N*= 20) was investigated by evaluating the available data. On the basis of experimental results from the beta-decay and fusion-evaporation reactions, we established the level scheme by assigning spin-parities up to 6

_{1}

^{+}at 6233 keV. The high energy positions of the excited states are consistent with the magicity at

^{34}Si, such as the 2

_{2}

^{+}state of the spherical ground band at 4.519 MeV and the 3

^{-}, 4

^{-}, and 5

^{-}states of the one-particle one-hole cross-shell states at approximately 4.5 MeV. This nucleus, for a long time, has attracted much attention because of, on one side, a proton bubble structure in the ground state and, on the other side, a deformation in the second 0

^{+}state, 0

_{2}

^{+}. By a comparison of the constructed level scheme with the shell model calculations, we describe the emerging structures in the ground and second 0

^{+}states and the negative-parity 3

^{-}states within the framework of the shell model context. We propose a deformed rotational band with the cascading 6

_{2}

^{+}− 4

_{1}

^{+}− 2

_{1}

^{+}transitions built on the 0

_{2}

^{+}state.

2022, 46(12): 124103. doi: 10.1088/1674-1137/ac8c23

**Abstract:**

We calculate the HBT radius

2022, 46(12): 124104. doi: 10.1088/1674-1137/ac92d9

**Abstract:**

A partial wave scattering matrix for the total effective complex potential of nucleus nucleus collisions is proposed to easily analyze the angular variations of elastic scattering and fusion cross-sections simultaneously with a unique potential. The expectation value of the imaginary part of the potential calculated using the distorted waves from the full potential in the elastic channel accounts for

2022, 46(12): 125101. doi: 10.1088/1674-1137/ac878b

**Abstract:**

We study the dynamical properties of the thermodynamic phase transition (PT) of a charged AdS black hole (BH) with a global monopole via the Gibbs free energy landscape and reveal the effects of the global monopole on the kinetics of thermodynamic PTs. First, we briefly review the thermodynamics of a charged AdS BH with a global monopole. Then, we introduce the Gibbs free energy landscape to investigate the thermodynamic stability of the BH states. Because of thermal fluctuations, the small black hole (SBH) state can transit to a large black hole (LBH) state, and vice versa. Further, we use the Fokker-Planck equation with the reflecting boundary condition to study the probability evolution of the BH state with and without a global monopole separately. It is found that for both the SBH and LBH states, the global monopole could slow down the evolution of the BH state. In addition, we obtain the relationship between the first passage time and the monopole parameter

*η*. The result shows that as the monopole parameter

*η*increases, the mean first passage time becomes longer for both the SBH and LBH states.

2022, 46(12): 125102. doi: 10.1088/1674-1137/ac87f0

**Abstract:**

We investigate generalized Jackiw-Teitelboim gravity, coupling the dilaton field with two scalar matter fields. We obtain the equations of motion for the fields and investigate a linear perturbation of the solutions in general. We study two specific situations that allow for analytic solutions with topological behavior and check how the dilaton field, the warp factor and the Ricci scalar behave. In particular, we show how the parameters can be used to modify the structure of the solutions. Moreover, the perturbations are, in general, described by intricate coupled differential equations, but in some specific cases, we can construct the corresponding zero modes analytically.

2022, 46(12): 125103. doi: 10.1088/1674-1137/ac8868

**Abstract:**

In this study, we investigate the collapsing scenario for the

**k-**essence emergent Vaidya spacetime in the context of massive gravity's rainbow. For this study, we consider that the background metric is Vaidya spacetime in massive gravity's rainbow. We show that the

**k-**essence emergent gravity metric closely resembles the new type of generalized Vaidya massive gravity metric with the rainbow deformations for null fluid collapse, where we consider the

**k-**essence scalar field as a function solely of the advanced or the retarded time. The

**k-**essence emergent Vaidya massive gravity rainbow mass function is also different. This new type

**k-**essence emergent Vaidya massive gravity rainbow metric satisfies the required energy conditions. The existence of a locally naked central singularity and the strength and strongness of the singularities for the rainbow deformations of the

**k-**essence emergent Vaidya massive gravity metric are the interesting outcomes of the present work.

2022, 46(12): 125104. doi: 10.1088/1674-1137/ac8c22

**Abstract:**

In this study, we consider an open system from the thermodynamic perspective for an adiabatic FRW universe model in which particle creation occurs within the system. In this case, the modified continuity equation is obtained, and then, we make it correspond to the continuity equation of

*T*is the torsion scalar. We assume the contents of the universe to be dark matter and dark energy and consider an interaction term between them. An interesting point of this study is that we make the modified continuity equation resulting from particle creation equivalent to the matter continuity equation resulting from

2022, 46(12): 125105. doi: 10.1088/1674-1137/ac8e53

**Abstract:**

In this work, the microstructure of charged AdS black holes under minimal length effects is investigated. We study the thermodynamics of black holes in the extended phase space, where the cosmological constant is regarded as the thermodynamic pressure. The modified Hawking temperature and phase transition are obtained based on the generalized uncertainty principle (GUP). Then, using thermodynamic geometry, the microstructure of black holes can be determined by the ratio of the GUP parameter to charge. For a small ratio, the black hole exhibits the typical RN-AdS microstructure with van der Waals phase transition and repulsive/attractive interactions. As the ratio increases, the reentrant phase transition is observed, and both the repulsion-attraction coexisted and the attraction dominated black holes are noted. For a large ratio, the black hole behaves like a Schwarzchild-AdS black hole in which neither phase transition nor repulsive interaction are observed. These results suggest that the GUP effect will reduce the repulsive interaction presented by the charged AdS black hole.

2022, 46(12): 125106. doi: 10.1088/1674-1137/ac90af

**Abstract:**

In this study, we investigate the influence of the angular momentum of a charged particle around non-extremal and extremal Einstein-Maxwell-Dilaton-Axion black holes on the Lyapunov exponent. The angular momentum's ranges and spatial regions where the bound of the exponent is violated are found for certain values of the rotation parameter and dilatonic constant of the black holes. This violation always exists when the rotation parameter is large enough and the rotation direction of the particle is opposite to that of the black holes. The spatial region outside the extremal black hole of the violation is relatively large. In the near-horizon regions of the extremal black holes, the violation depends on the rotation directions of the black holes and particles and not depend on the value of the angular momentum.

2022, 46(12): 125107. doi: 10.1088/1674-1137/ac917f

**Abstract:**

In this study, we observe that, in the presence of the string cloud parameter

*a*and the quintessence parameter

*γ*, with the equation of state parameter

*a*and

*γ*. Further, we see the effects of

*a*and

*γ*on the rate of emission energy for the Schwarzschild black hole. We notice that the rate of emission energy is higher in the presence of clouds of strings and quintessence. Moreover, we study the weak deflection angle using the Gauss-Bonnet theorem. We show the influence of

*a*and

*γ*on the weak deflection angle. We notice that both

*a*and

*γ*increase the deflection angle

*α*.

**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

Author benefits

- A SCOAP3 participating journal - free Open Access publication for qualifying articles
- Average 24 days to first decision
- Fast-track publication for selected articles
- Subscriptions at over 3000 institutions worldwide
- Free English editing on all accepted articles

News

- 2022 National holiday- office closure
- The 2022 summer holiday-Office closure
- Impact factor of Chinese Physics C is 2.944 in 2021
- The 2022 Labor Day Holiday-Office closure
- The 2022 Chinese New Year-Office closure

Meet Editor