2018 Vol. 42, No. 3

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PARTICLES AND FIELDS
Event patterns extracted from top quark-related spectra in proton-proton collisions at 8 TeV
Ya-Hui Chen, Fu-Hu Liu, Roy A
2018, 42(3): 033101. doi: 10.1088/1674-1137/42/3/033101
Abstract:
We analyze the transverse momentum (pT) and rapidity (y) spectra of top quark pairs, hadronic top quarks, and top quarks produced in proton-proton (m pp) collisions at center-of-mass energy √s=8 TeV. For pT spectra, we use the superposition of the in...
Optimizing Higgs factories by modifying the recoil mass
Jiayin Gu, Ying-Ying Li
2018, 42(3): 033102. doi: 10.1088/1674-1137/42/3/033102
Abstract:
It is difficult to measure the m WW-fusion Higgs production process (e+e-→ννh) at a lepton collider with a center of mass energy of 240-250GeV due to its small rate and the large background from the Higgsstrahlung process with an invisible Z (e+e-→hZ...
Search for W' signal in single top quark production at the LHC
Fei Huang, Hong-Lei Li, Shi-Yuan Li, Zong-Guo Si, Wei Su, Zhong-Juan Yang
2018, 42(3): 033103. doi: 10.1088/1674-1137/42/3/033103
Abstract:
Heavy charged gauge bosons are proposed in some theories beyond the standard model. We explore the discovery potential for m W'→tb with top quark semi-leptonic decay at the LHC. We concentrate on the new physics signal search with the deviation from ...
Flavor non-universal gauge interactions and anomalies in B-meson decays
Yong Tang, Yue-Liang Wu
2018, 42(3): 033104. doi: 10.1088/1674-1137/42/3/033104
Abstract:
Motivated by flavor non-universality and anomalies in semi-leptonic B-meson decays, we present a general and systematic discussion about how to construct anomaly-free U(1)' gauge theories based on an extended standard model with only three right-hand...
Next-to-leading order QCD corrections to the decay of Higgs to vector meson and Z boson
Qing-Feng Sun, An-Min Wang
2018, 42(3): 033105. doi: 10.1088/1674-1137/42/3/033105
Abstract:
The exclusive decay of the Higgs boson to a vector meson (J/ψ or Υ(1S)) and m Z boson is studied in this work. The decay amplitudes are separated into two parts in a gauge invariant manner. The first part comes from the direct coupling of the Higgs b...
NUCLEAR PHYSICS
Shape coexistence close to N=50 in the neutron-rich isotope 80Ge investigated by IBM-2
Da-Li Zhang, Cheng-Fu Mu
2018, 42(3): 034101. doi: 10.1088/1674-1137/42/3/034101
Abstract:
The properties of the low-lying states, especially the relevant shape coexistence in 80Ge, close to one of most neutron-rich doubly magic nuclei at N=50 and Z=28, have been investigated within the framework of the proton-neutron interacting model (IB...
Pairing-energy coefficients of neutron-rich fragments in spallation reactions
Fei Niu, Chun-Wang Ma
2018, 42(3): 034102. doi: 10.1088/1674-1137/42/3/034102
Abstract:
The ratio of pairing-energy coefficient to temperature (ap/T) of neutron-rich fragments produced in spallation reactions has been investigated by adopting an isobaric yield ratio method deduced in the framework of a modified Fisher model. A series of...
Effects of single particle on shape phase transitions and phase coexistence in odd-even nuclei
Xiang-Ru Yu, Jing Hu, Xiao-Xue Li, Si-Yu An, Yu Zhang
2018, 42(3): 034103. doi: 10.1088/1674-1137/42/3/034103
Abstract:
A classical analysis of shape phase transitions and phase coexistence in odd-even nuclei has been performed in the framework of the interacting boson-fermion model. The results indicate that the effects of a single particle may influence different ty...
Mixing of the lowest-lying qqq configurations with JP=1/2- in different hyperfine interaction models
Jia Chen, Chunsheng An, Hong Chen
2018, 42(3): 034104. doi: 10.1088/1674-1137/42/3/034104
Abstract:
We investigate mixing of the lowest-lying qqq configurations with JP=1/2- caused by the hyperfine interactions between quarks mediated by Goldstone Boson Exchange, One Gluon Exchange, and both Goldstone Boson and One Gluon exchange, respectively. The...
PARTICLE AND NUCLEAR ASTROPHYSICS AND COSMOLOGY
Explaining DAMPE results by dark matter with hierarchical lepton-specific Yukawa interactions
Guoli Liu, Fei Wang, Wenyu Wang, Jin-Min Yang
2018, 42(3): 035101. doi: 10.1088/1674-1137/42/3/035101
Abstract:
We propose to interpret the DAMPE electron excess at 1.5 TeV through scalar or Dirac fermion dark matter (DM) annihilation with doubly charged scalar mediators that have lepton-specific Yukawa couplings. The hierarchy of such lepton-specific Yukawa c...
Conformal invariant cosmological perturbations via the covariant approach: multicomponent universe
Yunlong Zheng, Yicen Mou, Haomin Rao, Mingzhe Li
2018, 42(3): 035102. doi: 10.1088/1674-1137/42/3/035102
Abstract:
In recent years there has been a lot of interest in discussing frame dependences/independences of the cosmological perturbations under the conformal transformations. This problem has previously been investigated in terms of the covariant approach for...
ACCELERATORS
Analytical solution of transverse oscillation in cyclotron using LP method
Kai Zhou, Yun-Tao Song, Kai-Zhong Ding, Jian Ge, Kai Yao
2018, 42(3): 037001. doi: 10.1088/1674-1137/42/3/037001
Abstract:
We have carried out an approximate analytical solution to precisely consider the influence of magnetic field on the transverse oscillation of particles in a cyclotron. The differential equations of transverse oscillation are solved from the Lindstedt...

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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