Chinese Physics C

2024-6 Contents

2024, 48(6): 1-3.

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Determination of the resonant parameters of

${ \boldsymbol\chi_{\boldsymbol c \bf 0}\bf (3915)}$ with global fit

Chunhua Li, Xijun Wang, Chen Wu

2024, 48(6): 063001. doi: 10.1088/1674-1137/ad3943

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Particle

$\begin{document}$ \chi_{c0}(3915) $\end{document}$

was first observed by the Belle experiment in the

$\begin{document}$ \omega J/\psi $\end{document}$

invariant mass spectrum in the process

$\begin{document}$ B\to K\omega J/\psi $\end{document}$

...

Chunhua Li, Xijun Wang and Chen Wu. Determination of the resonant parameters of

$\begin{document}$ \chi_{c0}(3915) $\end{document}$

with global fit[J]. Chinese Physics C. doi: 10.1088/1674-1137/ad3943.

Mass suppression effect in QCD radiation and hadron angular distribution in jet

Chuan-Hui Jiang, Hai Tao Li, Shi-Yuan Li, Zong-Guo Si

2024, 48(6): 063101. doi: 10.1088/1674-1137/ad2f22

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The finite mass of the heavy quark suppresses the collimated radiations; this is generally referred to as the dead cone effect. In this paper, we study the distribution of hadron multiplicity over the hadron opening angle with respect to the jet axis...

B − L model with D₄ × Z₄ × Z₂ symmetry for fermion mass hierarchies and mixings

V. V. Vien

2024, 48(6): 063102. doi: 10.1088/1674-1137/ad2f23

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We constructed a gauge

$\begin{document}$ B-L $\end{document}$

model with

$\begin{document}$ D_4\times Z_4\times Z_2 $\end{document}$

symmetry to explain the quark and lepton mass hierarchies and their mixings with realistic CP phases via the type-I sees...

QCD sum rule study of J^P = 1^± exotic states with two heavy quarks in the molecular picture

T.M. Aliev, S. Bilmis, M. Savcı

2024, 48(6): 063103. doi: 10.1088/1674-1137/ad305f

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In this study, the spectroscopic parameters of exotic molecular states composed of mesons containing two heavy quarks (scalar - axial and pseudoscalar - axial meson combinations) are investigated within the QCD sum rules. Our findings reveal that mol...

Analysis of the gluon distribution with next-to-leading order splitting function at small-x

Jingxuan Chen, Xiaopeng Wang, Yanbing Cai, Xurong Chen, Qian Wang

2024, 48(6): 063104. doi: 10.1088/1674-1137/ad305d

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An approximated solution for the gluon distribution from DGLAP evolution equations with the NLO splitting function in the small-x limit is presented. We first obtain simplified forms of the LO and NLO splitting functions in the small-x limit. With th...

Electrodynamics with violations of Lorentz and U(1) gauge symmetries and their Hamiltonian structures

Xiu-Peng Yang, Bao-Fei Li, Tao Zhu

2024, 48(6): 063105. doi: 10.1088/1674-1137/ad33be

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This study aims to investigate Lorentz/U(1) gauge symmetry-breaking electrodynamics in the framework of the standard-model extension and analyze the Hamiltonian structure for the theory with a specific dimension

\begin{document}$ d\leq 4 $\end{docume...

Exploring dark matter-gauge boson effective interactions at current and future colliders

Yu Zhang, Yi-Wei Huang, Wei-Tao Zhang, Mao Song, Ran Ding

2024, 48(6): 063106. doi: 10.1088/1674-1137/ad2362

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In this study, we systematically investigate collider constraints on effective interactions between Dark Matter (DM) particles and electroweak gauge bosons. We consider the simplified models in which scalar or Dirac fermion DM candidates couple only ...

${ \boldsymbol D^{\bf +} \boldsymbol\to \boldsymbol\pi^{\bf +} \boldsymbol\nu\bar{\boldsymbol\nu}}$ decay process within the QCDSR approach

Yu Chen, Hai-Bing Fu, Tao Zhong, Sheng-Bo Wu, Dong Huang

2024, 48(6): 063107. doi: 10.1088/1674-1137/ad30f0

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In this paper, we investigate the charmed meson rare decay process

$\begin{document}$ D^+ \to \pi^+\nu\bar\nu $\end{document}$

using an approach based on QCD sum rules. First, the pion twist-2, 3 distribution amplitude (DA) moments

\begin{document}$ \l...

Yu Chen, Hai-Bing Fu, Tao Zhong, Sheng-Bo Wu and Dong Huang. Investigation for

$\begin{document}$ { \boldsymbol D^{\bf +} \boldsymbol\to \boldsymbol\pi^{\bf +} \boldsymbol\nu\bar{\boldsymbol\nu}} $\end{document}$

decay process within QCDSR approach[J]. Chinese Physics C. doi: 10.1088/1674-1137/ad30f0.

ρ-meson longitudinal leading-twist distribution amplitude revisited and the D→ρ semileptonic decay

Tao Zhong, Ya-Hong Dai, Hai-Bing Fu

2024, 48(6): 063108. doi: 10.1088/1674-1137/ad34be

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Motivated by our previous study [Phys. Rev. D 104(1), 016021 (2021)] on the pionic leading-twist distribution amplitude (DA), we revisit the ρ-meson leading-twist longitudinal DA

$\begin{document}$ \phi_{2;\rho}^\|(x,\mu) $\end{document}$

in this study...

X(3960), X₀(4140), and other compact

${\boldsymbol c \boldsymbol s\bar{\boldsymbol c}\bar{\boldsymbol s}}$ states

Shi-Yuan Li, Yan-Rui Liu, Zi-Long Man, Zong-Guo Si, Jing Wu

2024, 48(6): 063109. doi: 10.1088/1674-1137/ad34c4

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We studied the spectrum and rearrangement decays of S-wave

$\begin{document}$ cs\bar{c}\bar{s} $\end{document}$

tetraquark states in a simplified quark model. The masses and widths were estimated by assuming that

\begin{document}$ X(4140) $\end{documen...

Shi-Yuan Li, Yan-Rui Liu, Zi-Long Man, Zong-Guo Si and Jing Wu. The X(3960), X₀(4140), and other compact

$\begin{document}${\boldsymbol c \boldsymbol s\bar{\boldsymbol c}\bar{\boldsymbol s}} $\end{document}$

states[J]. Chinese Physics C. doi: 10.1088/1674-1137/ad34c4.

TALYS calculation and a short review of the experimental status of proton capture studies on p-nuclei: A guide to future investigation

Indrani Ray, Argha Deb

2024, 48(6): 064001. doi: 10.1088/1674-1137/ad2dc3

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TALYS calculations were performed to obtain the theoretical proton capture cross-sections on the p-nuclei. A short review on the status of related experimental studies was also conducted. Some basic properties such as Q-values, Coulomb barrier, Gamow...

Prompt neutron emission in ²⁵⁰No spontaneous fission associated with ground and isomeric state decays

R.S. Mukhin, A.V. Isaev, A.V. Andreev, M.L. Chelnokov, V.I. Chepigin, H.M. Devaraja, I.N. Izosimov, A.A. Kuznetsova, O.N. Malyshev, A.G. Popeko, Yu.A. Popov, A. Rahmatinejad, B. Sailaubekov, T.M. Shneidman, E.A. Sokol, A.I. Svirikhin, M.S. Tezekbayeva, M.A. Bychkov, A.V. Yeremin, O. Dorvaux, B. Gall, K. Kessaci, K. Hauschild, A. Lopez-Martens

2024, 48(6): 064002. doi: 10.1088/1674-1137/ad361a

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The complete-fusion reaction ²⁰⁴Pb(⁴⁸Ca,2n)²⁵⁰No was used to study two activities of ²⁵⁰No with distinct half-lives. A total of 1357 events were observed in the SFiNx neutron detection system. The average number of neutrons emitted per spontaneous fi...

Systematic study of cluster radioactivity within the generalized liquid drop model

Jun-Gang Deng, Jun-Hao Cheng, Xiao-Jun Bao, Hong-Fei Zhang

2024, 48(6): 064101. doi: 10.1088/1674-1137/ad30ef

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Cluster radioactivity is studied within the generalized liquid drop model (GLDM), in which the shell correction energy, pairing energy, and cluster preformation factor are considered. The calculations show significant improvements and can reproduce t...

A study of U-isotope ground state properties with covariant energy density functional

Junchen Wang, Yuan Tian, Ruirui Xu, Ying Cui, Xi Tao, Xiaodong Sun, Zhi Zhang, Yue Zhang, Yinlu Han, Zhigang Ge, Nengchuan Shu

2024, 48(6): 064102. doi: 10.1088/1674-1137/ad305c

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In this study, we systematically analyzed the ground state of uranium isotopes from 225 to 240. In our calculations, we used the covariant energy density functional of density-dependent meson exchange interaction (DD-ME2) with separable pairing inter...

Isoscaling properties for neutron-rich fragments in highly asymmetric heavy ion collision systems

Dan Peng, Chun-Wang Ma, Chun-Yuan Qiao, Xing-Quan Liu, Hui-Ling Wei

2024, 48(6): 064103. doi: 10.1088/1674-1137/ad33bd

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Traditionally, isoscaling has been interpreted and applied within the framework of the grand canonical ensemble, based on the assumption that fragment production occurs following the attainment of a statistical equilibrium state. However, the influen...

Sequential decay analysis of ²³⁵U(n^th, f ) reaction using fragmentation approach

Nitin Sharma, Ashutosh Kaushik, Manoj K. Sharma

2024, 48(6): 064104. doi: 10.1088/1674-1137/ad2dc1

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Numerous experimental and theoretical observations have concluded that the probability of the three fragment emission (ternary fission) or binary fission increases when one proceeds towards the heavy mass region of nuclear periodic table. Many factor...

Implications of neutron skin measurements on Skyrme equations of state

Da Wei Guan, Jun Chen Pei, Chong Ji Jiang

2024, 48(6): 064105. doi: 10.1088/1674-1137/ad3814

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The recent measurements of neutron skins via parity violation in electron scattering have extracted an abnormally thick neutron skin for

$\begin{document}$ ^{208} $\end{document}$

Pb, which has significant consequences in nuclear equation of state (EoS)...

Transfer learning and neural networks in predicting quadrupole deformation

Yuan Lin, Jia-Xing Li, Hong-Fei Zhang

2024, 48(6): 064106. doi: 10.1088/1674-1137/ad361d

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Accurately determining the quadrupole deformation parameters of atomic nuclei is crucial for understanding their structural and dynamic properties. This study introduces an innovative approach that combines transfer learning techniques with neural ne...

Optimization of performance of the KM2A full array using the Crab Nebula

Zhen Cao, F. Aharonian, Q. An, Y.X. Bai, Y.W. Bao, D. Bastieri, X.J. Bi, Y.J. Bi, J.T. Cai, Q. Cao, W.Y. Cao, Zhe Cao, J. Chang, J.F. Chang, A.M. Chen, E.S. Chen, Liang Chen, Lin Chen, Long Chen, M.J. Chen, M.L. Chen, Q.H. Chen, S.H. Chen, T.L. Chen, Y. Chen, N. Cheng, Y.D. Cheng, M.Y. Cui, S.W. Cui, X.H. Cui, Y.D. Cui, B.Z. Dai, H.L. Dai, Z.G. Dai, , D. della Volpe, X.Q. Dong, K.K. Duan, J.H. Fan, Y.Z. Fan, J. Fang, K. Fang, C.F. Feng, L. Feng, S.H. Feng, X.T. Feng, Y.L. Feng, S. Gabici, B. Gao, C.D. Gao, L.Q. Gao, Q. Gao, W. Gao, W.K. Gao, M.M. Ge, L.S. Geng, G. Giacinti, G.H. Gong, Q.B. Gou, M.H. Gu, F.L. Guo, X.L. Guo, Y.Q. Guo, Y.Y. Guo, Y.A. Han, H.H. He, H.N. He, J.Y. He, X.B. He, Y. He, M. Heller, Y.K. Hor, B.W. Hou, C. Hou, X. Hou, H.B. Hu, Q. Hu, S.C. Hu, D.H. Huang, T.Q. Huang, W.J. Huang, X.T. Huang, X.Y. Huang, Y. Huang, Z.C. Huang, X.L. Ji, H.Y. Jia, K. Jia, K. Jiang, X.W. Jiang, Z.J. Jiang, M. Jin, M.M. Kang, T. Ke, D. Kuleshov, K. Kurinov, B.B. Li, Cheng Li, Cong Li, D. Li, F. Li, H.B. Li, H.C

2024, 48(6): 065001. doi: 10.1088/1674-1137/ad2e82

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The full array of the Large High Altitude Air Shower Observatory (LHAASO) has been in operation since July 2021. For its kilometer-square array (KM2A), we optimized the selection criteria for very high and ultra-high energy γ-rays using data collecte...

Zhen Cao, F. Aharonian, Q. An, Axikegu, Y.X. Bai, Y.W. Bao, D. Bastieri, X.J. Bi, Y.J. Bi, J.T. Cai, Q. Cao, W.Y. Cao, Zhe Cao, J. Chang, J.F. Chang, A.M. Chen, E.S. Chen, Liang Chen, Lin Chen, Long Chen, M.J. Chen, M.L. Chen, Q.H. Chen, S.H. Chen, T.L. Chen, Y. Chen, N. Cheng, Y.D. Cheng, M.Y. Cui, S.W. Cui, X.H. Cui, Y.D. Cui, B.Z. Dai, H.L. Dai, Z.G. Dai, Danzengluobu, D. della Volpe, X.Q. Dong, K.K. Duan, J.H. Fan, Y.Z. Fan, J. Fang, K. Fang, C.F. Feng, L. Feng, S.H. Feng, X.T. Feng, Y.L. Feng, S. Gabici, B. Gao, C.D. Gao, L.Q. Gao, Q. Gao, W. Gao, W.K. Gao, M.M. Ge, L.S. Geng, G. Giacinti, G.H. Gong, Q.B. Gou, M.H. Gu, F.L. Guo, X.L. Guo, Y.Q. Guo, Y.Y. Guo, Y.A. Han, H.H. He, H.N. He, J.Y. He, X.B. He, Y. He, M. Heller, Y.K. Hor, B.W. Hou, C. Hou, X. Hou, H.B. Hu, Q. Hu, S.C. Hu, D.H. Huang, T.Q. Huang, W.J. Huang, X.T. Huang, X.Y. Huang, Y. Huang, Z.C. Huang, X.L. Ji, H.Y. Jia, K. Jia, K. Jiang, X.W. Jiang, Z.J. Jiang, M. Jin, M.M. Kang, T. Ke, D. Kuleshov, K. Kurinov, B.B. Li, Cheng Li, Cong Li, D. Li, F. Li, H.B. Li, H.C. Li, H.Y. Li, J. Li, Jian Li, Jie Li, K. Li, W.L. Li, W.L. Li, X.R. Li, Xin Li, Y.Z. Li, Zhe Li, Zhuo Li, E.W. Liang, Y.F. Liang, S.J. Lin, B. Liu, C. Liu, D. Liu, H. Liu, H.D. Liu, J. Liu, J.L. Liu, J.Y. Liu, M.Y. Liu, R.Y. Liu, S.M. Liu, W. Liu, Y. Liu, Y.N. Liu, R. Lu, Q. Luo, H.K. Lv, B.Q. Ma, L.L. Ma, X.H. Ma, J.R. Mao, Z. Min, W. Mitthumsiri, H.J. Mu, Y.C. Nan, A. Neronov, Z.W. Ou, B.Y. Pang, P. Pattarakijwanich, Z.Y. Pei, M.Y. Qi, Y.Q. Qi, B.Q. Qiao, J.J. Qin, D. Ruffolo, A. S\'aiz, D. Semikoz, C.Y. Shao, L. Shao, O. Shchegolev, X.D. Sheng, F.W. Shu, H.C. Song, Yu.V. Stenkin, V. Stepanov, Y. Su, Q.N. Sun, X.N. Sun, Z.B. Sun, P.H.T. Tam, Q.W. Tang, Z.B. Tang, W.W. Tian, C. Wang, C.B. Wang, G.W. Wang, H.G. Wang, H.H. Wang, J.C. Wang, K. Wang, L.P. Wang, L.Y. Wang, P.H. Wang, R. Wang, W. Wang, X.G. Wang, X.Y. Wang, Y. Wang, Y.D. Wang, Y.J. Wang, Z.H. Wang, Z.X. Wang, Zhen Wang, Zheng Wang, D.M. Wei, J.J. Wei, Y.J. Wei, T. Wen, C.Y. Wu, H.R. Wu, S. Wu, X.F. Wu, Y.S. Wu, S.Q. Xi, J. Xia, J.J. Xia, G.M. Xiang, D.X. Xiao, G. Xiao, G.G. Xin, Y.L. Xin, Y. Xing, Z. Xiong, D.L. Xu, R.F. Xu, R.X. Xu, W.L. Xu, L. Xue, D.H. Yan, J.Z. Yan, T. Yan, C.W. Yang, F. Yang, F.F. Yang, H.W. Yang, J.Y. Yang, L.L. Yang, M.J. Yang, R.Z. Yang, S.B. Yang, Y.H. Yao, Z.G. Yao, Y.M. Ye, L.Q. Yin, N. Yin, X.H. You, Z.Y. You, Y.H. Yu, Q. Yuan, H. Yue, H.D. Zeng, T.X. Zeng, W. Zeng, M. Zha, B.B. Zhang, F. Zhang, H.M. Zhang, H.Y. Zhang, J.L. Zhang, L.X. Zhang, Li Zhang, P.F. Zhang, P.P. Zhang, R. Zhang, S.B. Zhang, S.R. Zhang, S.S. Zhang, X. Zhang, X.P. Zhang, Y.F. Zhang, Yi Zhang, Yong Zhang, B. Zhao, J. Zhao, L. Zhao, L.Z. Zhao, S.P. Zhao, F. Zheng, B. Zhou, H. Zhou, J.N. Zhou, M. Zhou, P. Zhou, R. Zhou, X.X. Zhou, C.G. Zhu, F.R. Zhu, H. Zhu, K.J. Zhu, X. Zuo and (LHAASO Collaboration). Optimization of performance of the KM2A full array using the Crab Nebula[J]. Chinese Physics C. doi: 10.1088/1674-1137/ad2e82.

Critical behavior and Joule-Thomson expansion of charged AdS black holes surrounded by exotic fluid with modified Chaplygin equation of state

Meng-Yao Zhang, Hao Chen, Hassan Hassanabad, Zheng-Wen Long, Hui Yang

2024, 48(6): 065101. doi: 10.1088/1674-1137/ad32c0

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By considering the concept of a unified single fluid model, referred to as modified Chaplygin gas (MCG), which amalgamates dark energy and dark matter, we explore the thermodynamic characteristics of charged anti-de Sitter (AdS) black holes existing ...

Cosmological constraints on neutrino mass within consistent cosmological models

Ye-Huang Pang, Xue Zhang, Qing-Guo Huang

2024, 48(6): 065102. doi: 10.1088/1674-1137/ad34c0

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Recently, the emergence of cosmological tension has raised doubts about the consistency of the ΛCDM model. To constrain the neutrino mass within a consistent cosmological framework, we investigate three massive neutrinos with normal hierarchy (NH) an...

Impacts of gravitational-wave background from supermassive black hole binaries on the detection of compact binaries by LISA

Fan Huang, Yan-Chen Bi, Zhoujian Cao, Qing-Guo Huang

2024, 48(6): 065103. doi: 10.1088/1674-1137/ad34c2

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In the frequency band of the Laser Interferometer Space Antenna (LISA), extensive research has been conducted on the impact of foreground confusion noise generated by galactic binaries within the Milky Way Galaxy. Additionally, recent evidence of a s...

New results on the dynamics of critical collapse

Jun-Qi Guo, Yu Hu, Pan-Pan Wang, Cheng-Gang Shao

2024, 48(6): 065104. doi: 10.1088/1674-1137/ad361c

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We study the dynamics of the critical collapse of a spherically symmetric scalar field. Approximate analytic expressions for the metric functions and matter field in the large-radius region are obtained. In the central region, owing to the boundary c...

Observational appearance and extra photon rings of an asymmetric thin-shell wormhole with a Bardeen profile

Ke-Jian He, Zhi Luo, Sen Guo, Guo-Ping Li

2024, 48(6): 065105. doi: 10.1088/1674-1137/ad34bf

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In this work, the optical appearance of an asymmetric thin-shell wormhole with a Bardeen profile is studied. To initiate the process, we need to construct an asymmetric thin-shell wormhole utilizing the cut-and-paste technique proposed by Visser and ...

Surface growth approach for bulk reconstruction in the AdS/BCFT correspondence

Xi-Hao Fang, Fang-Zhong Chen, Jia-Rui Sun

2024, 48(6): 065106. doi: 10.1088/1674-1137/ad32be

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In this study, we extend the surface growth approach for bulk reconstruction into the AdS spacetime with a boundary in the AdS/BCFT correspondence. We show that the geometry in the entanglement wedge with a boundary can be constructed from the direct...

Constraints on axion-like particles from the observation of Galactic sources by the LHAASO

Jun Li, Xiao-Jun Bi, Lin-Qing Gao, Xiaoyuan Huang, Run-Min Yao, Peng-Fei Yin

2024, 48(6): 065107. doi: 10.1088/1674-1137/ad361e

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High-energy photons may oscillate with axion-like particles (ALPs) when they propagate through the Milky Way's magnetic field, resulting in an alteration in the observed photon energy spectrum. Ultra-high energy gamma-ray spectra, measured by the Lar...

Constraints on real scalar inflation from preheating using LATTICEEASY

Wei Cheng, Tong Qin, Jiujiang Jiang, Ruiyu Zhou

2024, 48(6): 065108. doi: 10.1088/1674-1137/ad34bd

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In this paper, we undertake a detailed study of real scalar inflation using LATTICEEASY simulations to investigate preheating phenomena. Generally, the scalar inflation potential with non-minimal coupling can be approximated using a quartic potential...

Photon orbits and phase transition for Letelier AdS black holes immersed in perfect fluid dark matter

Ashima Sood, Md Sabir Ali, J. K. Singh, Sushant G. Ghosh

2024, 48(6): 065109. doi: 10.1088/1674-1137/ad361f

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We obtain an exact solution for spherically symmetric Letelier AdS black holes immersed in perfect fluid dark matter (PFDM). Considering the cosmological constant as the positive pressure of the system and volume as its conjugate variable, we analyze...

2024 Vol. 48, No. 6