2018 Vol. 42, No. 7

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PARTICLES AND FIELDS
A minimal model for two-component FIMP dark matter: A basic search
Peyman Zakeri, Mohammad Moosavi, Mohammadreza Zakeri, Yaser Ayazi
2018, 42(7): 073101. doi: 10.1088/1674-1137/42/7/073101
Abstract:
In the multi-component configurations of dark matter phenomenology, we propose a minimal two-component configuration which is an extension of the Standard Model with only three new fields; one scalar and one fermion interact with the thermal soup thr...
Decay constants of pseudoscalar and vector mesons with improved holographic wavefunction
Qin Chang, Xiao-Nan Li, Xin-Qiang Li, Fang Su
2018, 42(7): 073102. doi: 10.1088/1674-1137/42/7/073102
Abstract:
We calculate the decay constants of light and heavy-light pseudoscalar and vector mesons with improved soft-wall holographic wavefuntions, which take into account the effects of both quark masses and dynamical spins. We find that the predicted decay ...
Pair production of Higgs boson in NMSSM at the LHC with the next-to-lightest CP-even Higgs boson being SM-like
Zhaoxia Heng, Xue Gong, Haijing Zhou
2018, 42(7): 073103. doi: 10.1088/1674-1137/42/7/073103
Abstract:
The next-to-minimal supersymmetric standard model (NMSSM) more naturally accommodates a Higgs boson with a mass of approximately 125 GeV than the minimal supersymmetric standard model (MSSM). In this work, we assume that the next-to-lightest CP-even ...
NUCLEAR PHYSICS
Angular distribution measurement for 12C fragmentation via 12C + 12C scattering at 100 MeV/u
Wei-Wei Qu, Gao-Long Zhang, Guo-Yu Tian, Zhi-Qiang Chen, Shou-Ping Xu, Royichi Wada
2018, 42(7): 074001. doi: 10.1088/1674-1137/42/7/074001
Abstract:
The angular distributions and energy spectra of 11B, 10B, and 9Be fragments of 12C in the angular range from 1.0° to 7.5° at 100 MeV/u were obtained via 12C + 12C scattering. Detailed comparisons are presented between the experimental data and the mo...
Cross-section measurement for the 93Nb(n, 2n)92gNb reaction at the neutron energy of 14.6 MeV by the AMS method
Guo-Zhu He, Bin Shi, Ming He, Zhen-Yu Li, Shi-Long Liu, Xiong-Jun Chen, Xi-Chao Ruan, Qi-Wei Zhang, Qi-Wen Fan, Heng Li, Shao-Yong Wu, Shan Jiang, Zu-Ying Zhou
2018, 42(7): 074002. doi: 10.1088/1674-1137/42/7/074002
Abstract:
The cross-section for the 93Nb(n, 2n)92gNb reaction has been measured at the neutron energy of 14.6 MeV using neutron activation and accelerator mass spectrometry (AMS) determination of the long-lived product nuclide 92gNb. The neutron energy was gen...
Investigation of the near-threshold cluster resonance in 14C
Hong-Liang Zang, Yan-Lin Ye, Zhi-Huan Li, Jian-Song Wang, Jian-Ling Lou, Qi-Te Li, Yu-Cheng Ge, Xiao-Fei Yang, Jing Li, Wei Jiang, Jun Feng, Qiang Liu, Biao Yang, Zhi-Qiang Chen, Yang Liu, Hong-Yi Wu, Chen-Yang Niu, Chen-Guang Li, Chun-Guang Wang, Xiang Wang, Wei Liu, Jian Gao, Han-Zhou Yu, Jun-Bin Ma, Peng Ma, Zhen Bai, Yan-Yun Yang, Shi-Lun Jin, Fei Lu
2018, 42(7): 074003. doi: 10.1088/1674-1137/42/7/074003
Abstract:
An experiment for m p(14C},14C*10Be+α)p inelastic excitation and decay was performed in inverse kinematics at a beam energy of 25.3 MeV/u. A series of 14C excited states, including a new one at 18.3(1) MeV, were observed which decay to various state...
An energy sum constraint of event mixing for Bose-Einstein correlations in reactions with ππX final states around 1 GeV
Qing-Hua He
2018, 42(7): 074004. doi: 10.1088/1674-1137/42/7/074004
Abstract:
We present a new event mixing technique for measuring two-pion Bose-Einstein correlations (BEC) in reactions with only two identical bosons among three final state particles. This new mixing method contains a missing mass consistency (MMC) cut and an...
An analytical formula for fluctuations in nuclear charge density
A. R. Abdulghany
2018, 42(7): 074101. doi: 10.1088/1674-1137/42/7/074101
Abstract:
The experimental charge densities of atomic nuclei show fluctuations in their distributions. This paper investigates the limits of accuracy of two-parameter Fermi and three-parameter Fermi distributions in describing the charge density. An improved a...
Predictions for cross sections of light proton-rich isotopesin the 40Ca + 9Be reaction
Yi-Dan Song, Hui-Ling Wei, Chun-Wang Ma
2018, 42(7): 074102. doi: 10.1088/1674-1137/42/7/074102
Abstract:
The cross sections for Z=10-19 with isotopes Tz=-3/2 to -5 in the 140A MeV 40Ca + 9Be projectile fragmentation reaction have been predicted. An empirical formula based on the correlation between the cross section and average binding energy of an isot...
α particle preformation and shell effect for heavy andsuperheavy nuclei
Yan-Wei Zhao, Shu-Qing Guo, Hong-Fei Zhang
2018, 42(7): 074103. doi: 10.1088/1674-1137/42/7/074103
Abstract:
The α particle preformation factor is extracted within a generalized liquid drop model for Z=84-92 isotopes and N=126, 128, 152, 162, 176, 184 isotones. The calculated results show clearly that the shell effects play a key role in α particle preforma...
Poisson baseline of net-charge fluctuations in relativisticheavy ion collisions
Xue Pan, Yu-Fu Lin, Li-Zhu Chen, Ming-Mei Xu, Yuan-Fang Wu
2018, 42(7): 074104. doi: 10.1088/1674-1137/42/7/074104
Abstract:
Taking doubly charged particles, positive-negative charge pair production and the effects of volume fluctuations into account, the Poisson baseline of the fluctuations of net-charge is studied. Within the Poisson baseline, the cumulants of net-charge...
Possible candidate nuclei for chirality-parity quartet bands
Chen Liu, Shou-Yu Wang, Bin Qi, Hui Jia
2018, 42(7): 074105. doi: 10.1088/1674-1137/42/7/074105
Abstract:
The potential energy surfaces of the even-even 68-92Se, 112-150Ba, and 208-230Ra isotopes are calculated using the macroscopic-microscopic method in a multidimensional space {αλ,μ} including quadrupole (λ=2, μ=0, 2) and octupole (λ=3, μ=0, 1, 2, 3) d...
PARTICLE AND NUCLEAR ASTROPHYSICS AND COSMOLOGY
Cosmic ray electron spectrum due to the dispersion ofinjection spectrum
Tian-Lu Chen, Wei Liu, Qi Gao, Mao-Yuan Liu, Hai-Jin Li, Danzengluobu, Ying Shi
2018, 42(7): 075001. doi: 10.1088/1674-1137/42/7/075001
Abstract:
The cosmic-ray total electron spectrum (electrons plus positrons) has been measured precisely up to TeV energies, with more interesting features found. Exhaustive analyses of the electron spectrum strongly support a spectral hardening above 100 GeV, ...
Doubly coupled matter fields in massive bigravity
Xian Gao, Lavinia Heisenberg
2018, 42(7): 075101. doi: 10.1088/1674-1137/42/7/075101
Abstract:
In the context of massive (bi-)gravity, non-minimal matter couplings have been proposed. These couplings are special in the sense that they are free of the Boulware-Deser ghost below the strong coupling scale and can be used consistently as an effect...
Dynamical interactions of dark energy and dark matter: Yang-Mills condensate and QCD axions
Andrea Addazi, Pietro Donà, Antonino Marcianò
2018, 42(7): 075102. doi: 10.1088/1674-1137/42/7/075102
Abstract:
We analyze a model of cold axion dark matter weakly coupled with a dark gluon condensate, reproducing dark energy. We first review how to recover the dark energy behavior using the functional renormalization group approach, and ground our study in th...
On the knee of Galactic cosmic rays in light of sub-TeV spectral hardenings
Yi-Qing Guo, Qiang Yuan
2018, 42(7): 075103. doi: 10.1088/1674-1137/42/7/075103
Abstract:
More than fifty years after the discovery of the knee in the cosmic ray (CR) spectra, its physical origin remains a mystery. This is partly due to the ambiguity of the energy spectra of individual components. Recently, direct measurements from severa...

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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