## 2023 Vol. 47, No. 4

Display Method: |

2023, 47(4): 041001. doi: 10.1088/1674-1137/acb0b7

**Abstract:**

In this study, we investigate the two step sequential one pion production mechanism, that is,

2023, 47(4): 041002. doi: 10.1088/1674-1137/acb346

**Abstract:**

The role and implication of binding energy through the accretion-induced collapse (AIC) of accreting white dwarfs (WDs) for the production of millisecond pulsars (MSPs) are investigated. The binding energy model is examined due to the dynamic process in closed binary systems, and the possible mass of the companion sufficient to induce their orbital parameters is investigated. The deterministic nature of this interaction has a strong sensitivity to the equation of state of the binary systems (where the compactness of a neutron star is proportional to the amount of binding energy) associated with their initial conditions. This behavior mimics the commonly assumed mass and amount of accreted matter under the instantaneous mass loss (

2023, 47(4): 043001. doi: 10.1088/1674-1137/acb6eb

**Abstract:**

Using data taken at 29 center-of-mass energies between 4.16 and 4.70 GeV with the BESIII detector at the Beijing Electron Positron Collider corresponding to a total integrated luminosity of approximately 18.8

2023, 47(4): 043002. doi: 10.1088/1674-1137/acaa22

**Abstract:**

This paper presents the prospects of measuring

*Z*decay channels

^{–1}to mimic the data. Extrapolated results to 20 ab

^{–1}are also reported. The expected statistical precision of these measurements after combining three channels of

*Z*boson decay was 7.7%. With some preliminary estimation on the systematical uncertainties, the total precision is 7.9%. The performance of the CEPC electro-magnetic calorimeter (ECAL) was studied by smearing the photon energy resolution in simulated events in the

2023, 47(4): 043101. doi: 10.1088/1674-1137/acb3b3

**Abstract:**

Based on BESIII measurements of the reaction

*S*-wave pseudoscalar-pseudoscalar interaction within the unitary chiral approach and the contributions from the intermediate resonances

*S*-wave pseudoscalar-pseudoscalar interaction, plays an important role in this process, and the contributions from the intermediate resonances

2023, 47(4): 043102. doi: 10.1088/1674-1137/ac9e4c

**Abstract:**

The CDF collaboration recently announced a new measurement result for the

*W*boson mass, and it is in tension with the standard model prediction. In this paper, we explain this anomaly in the vector-like quark (VLQ)

*W*boson mass. Moreover, it may be a solution to the

*T*, and

*B*quarks.

2023, 47(4): 043103. doi: 10.1088/1674-1137/aca95a

**Abstract:**

Magic textures are successful candidates of the correct texture for Majorana neutrinos. In this study, we demonstrate that several types of magic textures of Majorana neutrinos are approximately immanent in the flavor mass matrix of Dirac neutrinos. In addition, the normal mass ordering of Dirac neutrino masses is slightly preferable to inverted mass ordering in the context of magic textures.

2023, 47(4): 043104. doi: 10.1088/1674-1137/acb48c

**Abstract:**

Using the minimal extension of the standard model and considering the charge radius and the anapole moments of a neutrino, we derive analytical expressions for the stellar energy loss rates associated with the production of a neutrino pair

2023, 47(4): 043105. doi: 10.1088/1674-1137/aca95c

**Abstract:**

It is well known that the observed Higgs mass is more naturally explained in the next-to-minimal supersymmetric standard model (NMSSM) than in the minimal supersymmetric standard model. Without any violation of this success, there are variants of the NMSSM that can lead to new phenomenologies. In this study, we propose a new variant of the NMSSM by imposing an unbroken

*R*symmetry. We first identify the minimal structure of such a scenario from the perspective of both simplicity and viability, then compare the model predictions to current experimental limits, and finally highlight the main features that differ from those of well-known scenarios.

2023, 47(4): 043106. doi: 10.1088/1674-1137/acb7d1

**Abstract:**

Within the standard model, we have investigated rare

*Z*-boson decays into double heavy quarkonia,

*V*and

*P*denoting vector and pseudoscalar quarkonia, respectively. It is assumed that the leading-order QCD diagrams would give the dominant contributions to these processes, and the corresponding branching fractions, for instance,

*V*. Interestingly, the smallness of the vector quarkonium mass can give rise to a large factor

2023, 47(4): 043107. doi: 10.1088/1674-1137/acb997

**Abstract:**

A nonzero neutrino mass may be a sign of new physics beyond the standard model (SM). To explain the small neutrino mass, we can extend the SM using right-handed Majorana neutrinos in a low-scale seesaw mechanism, and the

*CP*violation effect can be induced due to the

*CP*phase in the interference of heavy Majorana neutrinos. The existence of heavy Majorana neutrinos may lead to lepton number violation processes, which can be used to search for the signals of heavy Majorana neutrinos. In this paper, we focus on the

*CP*violation effect related to two generations of heavy Majorana neutrinos at

*W*bosons and rare decays. It is valuable to investigate Majorana neutrino production signals and the related

*CP*violation effects in rare

*W*boson decays at future lepton colliders.

2023, 47(4): 043108. doi: 10.1088/1674-1137/acb994

**Abstract:**

Based on a simplified model including a singlet vector-like top quark

*T*with charge |

*Q*|=

*T*via the single

*T*production in the

*Z*decaying to neutrinos at the hadron-hadron colliders. This simplified model only includes two free parameters, the coupling constant

*T*quark mass

*T*production, we perform a detailed background analysis and detector simulation for the collision energies 14 TeV, 27 TeV, and 100 TeV. We scan the

*T*quark with the highest integrated luminosity designed at these colliders. Moreover, the limits from the narrow-width approximation and electroweak precision observables are considered.

2023, 47(4): 043109. doi: 10.1088/1674-1137/acb6de

**Abstract:**

The Dirac neutrino masses could be simply generated by a neutrinophilic scalar doublet with a vacuum being dramatically different from the electroweak one. While the case with an eV-scale vacuum has been widely explored previously, we exploit in this work the desert where the scalar vacuum is of

2023, 47(4): 043111. doi: 10.1088/1674-1137/acb993

**Abstract:**

A series of new physics scenarios predict the existence of the extra charged gauge boson

*μ*) using a Monte-Carlo (MC) simulation. We find that the interference effect plays an important role, and the LHC can strongly constrain

2023, 47(4): 043112. doi: 10.1088/1674-1137/acbaea

**Abstract:**

Within the framework of perturbative QCD factorization, we investigate the nonfactorizable contributions to the factorization-forbidden quasi-two-body decays

2023, 47(4): 043113. doi: 10.1088/1674-1137/acbbc0

**Abstract:**

The axion-like particle (ALP) is a well motivated new particle candidate for beyond the standard model. In this study, we propose to probe the ALP via photon fusion scattering at the upcoming Electron-Ion Collider (EIC) with electron and proton energies of

*Z*-pole measurement at the LEP and light-by-light scattering with pp collisions at the LHC.

2023, 47(4): 043110. doi: 10.1088/1674-1137/acb8a4

**Abstract:**

By means of the nuclear parton distributions determined without the fixed-target Drell-Yan experimental data and the analytic expression of quenching weight based on the BDMPS formalism, next-to-leading order analyses were performed on the Drell-Yan differential cross section ratios from the Fermilab E906 and E866 collaborations. It was found that the results calculated only with the nuclear effects of the parton distribution were not in agreement with the E866 and E906 experimental data. The incoming parton energy loss effect cannot be ignored in the nuclear Drell-Yan reactions. The predicted results indicate that, with the quark transport coefficient as a constant, the suppression due to the target nuclear geometry effect is approximately

2023, 47(4): 044101. doi: 10.1088/1674-1137/acb910

**Abstract:**

Pre-neutron fragment mass yields in the vicinity of the thermal neutron energy are highly important for applications because of the larger fission cross sections of the

*n*,

*f*) and

*n*,

*f*) reactions. In this paper, pre-neutron fragment mass yields at incident energies from thermal up to 20 MeV are systematically studied using an empirical fission potential (EFP) model, the potential parameters of which are obtained from the measured data. The energy dependences of the peaks and valleys of the pre-neutron fragment mass yields are described by exponential and linear functions for the

*n*,

*f*) and

*n*,

*f*) reactions, respectively. The energy dependences of the evaporation neutrons, which play a crucial role in the reasonable description of pre-neutron fragment mass yields, are also obtained from the fission cross sections. The pre-neutron fragment mass yields in this study are not only consistent with the results of previous studies in regions of several MeVs but also agree well with existing measured data at incident energies from thermal up to 20 MeV. The results show that the feasibility of this EFP model is verified in this extended energy region.

2023, 47(4): 044102. doi: 10.1088/1674-1137/acb7cd

**Abstract:**

Using the axially deformed relativistic Hartree-Fock-Bogoliubov (D-RHFB) model, we explore the mechanism behind the parity inversion and halo occurrence in

^{11}Be, which are well reproduced by the RHF Lagrangian PKA1. It is illustrated that evidently enhanced deformation effects by the

*π*-pseudo-vector and

*ρ*-tensor couplings in PKA1 are crucial for correctly describing both the even-parity ground state (GS) and the neutron halo of

^{11}Be. Coupling with the deformation, the intrude

^{11}Be. Moreover, the deformed halo in

^{11}Be is found to be stabilized by the attractive inherent correlations between the

2023, 47(4): 044103. doi: 10.1088/1674-1137/acb7d0

**Abstract:**

In this paper, we examine the hypothesis that the nuclear EMC effect arises merely from the

*N*-

*N*SRC pairs inside the nucleus and that the properties of the

*N*-

*N*SRC pair are universal among the various nuclei, using the conventional

*x*-rescaling model for the EMC effect. With the previously determined effective mass of the short-range correlated nucleon and the number of

*N*-

*N*SRC pairs estimated, we calculated the EMC effect of various nuclei within the

*x*-rescaling approach. According to our calculations, the nuclear EMC effect due to the mass deficits of the SRC nucleons is not sufficient to reproduce the observed EMC effect in experiments. We speculate that the internal structure of the mean-field single nucleon is also clearly modified. Alternatively, there can be more origins of the EMC effect beyond the

*N*-

*N*SRC configuration (such as the

*α*cluster), or the universality of

*N*-

*N*SRC pair is significantly violated from light to heavy nuclei.

2023, 47(4): 044104. doi: 10.1088/1674-1137/acb14a

**Abstract:**

Recently, Jia proposed a formalism to apply the variational principle to a coherent-pair condensate for a two-body Hamiltonian. The present study extends this formalism by including three-body forces. The result is the same as the so-called variation after particle-number projection in the BCS case, but now, the particle number is always conserved, and the time-consuming projection is avoided. Specifically, analytical formulas of the average energy are derived along with its gradient for a three-body Hamiltonian in terms of the coherent-pair structure. Gradient vanishment is required to obtain analytical expressions for the pair structure at the energy minimum. The new algorithm iterates on these pair-structure expressions to minimize energy for a three-body Hamiltonian. The new code is numerically demonstrated when applied to realistic two-body forces and random three-body forces in large model spaces. The average energy can be minimized to practically any arbitrary precision.

2023, 47(4): 044105. doi: 10.1088/1674-1137/acb2bc

**Abstract:**

In the

*T*-matrix form of the transfer reaction, the optical model potentials (OMPs) are used to compute the scattering wave function and transition operator. For most cases, the elastic scattering cross sections, normally used to generate the OMPs, are not directly given in the same experiment. Then, the global OMPs, which fit the experimental data over a broad mass and energy range, are widely used in the theoretical calculations. Different sets of global OMPs with different parameter sets can reproduce the scattering cross section equally well within the uncertainty. Here, we apply different global OMPs to calculate the (differential) cross sections of

2023, 47(4): 044106. doi: 10.1088/1674-1137/acb992

**Abstract:**

In this study, we calculated transport coefficients including the shear viscosity and electrical conductivity relative to the density of dense hadronic and quark matter. By considering the simple massless limit for the quark matter and two different effective models for the hadronic matter, we estimated the transport coefficients of the two phases separately. Accordingly, density profiles of the transport coefficients were depicted in two parts: the phase-space part and the relaxation time part. From calculating the shear viscosity to density ratio, we also explored the nearly perfect fluid domain of the quark and hadronic matter.

2023, 47(4): 045101. doi: 10.1088/1674-1137/aca958

**Abstract:**

Based on the Einstein-Maxwell theory, the Joule-Thomson (J-T) expansion of charged dilatonic black holes (the solutions are neither flat nor AdS) in

*n*and dilaton field

*α*on J-T expansion. An explicit expression for the J-T coefficient is derived, and consequently, a negative heat capacity is found to lead to a cooling process. In contrast to its effect on the dimension, the inversion curve decreases with charge

*Q*at low pressures, whereas the opposite effect is observed at high pressures. We can observe that with an increase in the dimension

*n*or parameter

*α*, both the pressure cut-off point and the minimum inversion temperature

2023, 47(4): 045102. doi: 10.1088/1674-1137/aca8f4

**Abstract:**

In this study, we obtained an exact high dimensional anti-de Sitter (AdS) black hole solution in Einstein-bumblebee gravity theory. This AdS-like black hole can only exist with a linear functional potential of the bumblebee field. We found that the Smarr formula and the first law of black hole thermodynamics can still be constructed in this Lorentz symmetry breaking black hole spacetime, but the conceptions of the black hole horizon area/entropy and the volume inside the horizon should be renewed due to its anisotropy. We also found that two types of phase transition exist: small-large black hole phase transition and Hawking-Page phase transition, like those of the Schwarzschild AdS black hole. After Lorentz symmetry breaking, the black hole mass at the divergent point of heat capacity becomes small, and the Gibbs free energy of the meta-stable large black hole is also smaller, showing that the large stable black hole can be more easily formed.

**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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