Chinese Physics C

Mesonic condensation in isospin matter under rotation

Hui Zhang, Defu Hou, Jin-Feng Liao

2020, 44(11): 111001. doi: 10.1088/1674-1137/abae4d

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Abstract:
We investigate mesonic condensation in isospin matter under rotation. Using the two-flavor NJL effective model in the presence of global rotation, we demonstrate two important effects of rotation on its phase structure: a rotational suppression of t...

Unified interpretation of scalegenesis in conformally extended standard models: a dynamical origin of Higgs portal

Hiroyuki Ishida, Shinya Matsuzaki, Ruiwen Ouyang

2020, 44(11): 111002. doi: 10.1088/1674-1137/abb07f

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Abstract:
We present a universal interpretation of a class of conformal extended standard models that include Higgs portal interactions as realized in low-energy effective theories. The scale generation mechanism in this class (scalegenesis) arises along the (...

Recent progress in multiple chiral doublet bands

Shou-Yu Wang

2020, 44(11): 112001. doi: 10.1088/1674-1137/abaed2

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Abstract:
Recent progress regarding multiple chiral doublet bands (

$\begin{document}$ {\rm{M}}\chi{\rm{D}}$\end{document}$

) is reviewed from the experimental and theoretical perspectives. In particular, the experimental findings, theoretical predictions, selecti...

Probing electroweak dark matter at 14 TeV LHC

Shuai Xu, Si-Bo Zheng

2020, 44(11): 113101. doi: 10.1088/1674-1137/abae4c

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Abstract:
Well-motivated electroweak dark matter is often hosted by an extended electroweak sector that also contains new lepton pairs with masses near the weak scale. In this study, we explore such electroweak dark matter by combining dark matter direct detec...

Gauge dependence of the perturbative QCD predictions under the momentum-space subtraction scheme

Jun Zeng, Xing-Gang Wu, Xu-Chang Zheng, Jian-Ming Shen

2020, 44(11): 113102. doi: 10.1088/1674-1137/abae4e

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The momentum-space subtraction (MOM) scheme is one of the most frequently used renormalization schemes in perturbative QCD (pQCD) theory. In this paper, we discuss in detail the gauge dependence of the pQCD predictions obtained under the MOM scheme. ...

D → P(π, K) helicity form factors within light-cone sum rule approach

Hai-Bing Fu, Wei Cheng, Rui-Yu Zhou, Long Zeng

2020, 44(11): 113103. doi: 10.1088/1674-1137/abae4f

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Abstract:
In this study,

$\begin{document}$D\to P(\pi, K)$\end{document}$

helicity form factors (HFFs) are investigated by applying the QCD light-cone sum rule (LCSR) approach. The calculation accuracy is up to the next-to-leading order (NLO) gluon radiation cor...

Revisiting nonfactorizable contributions to factorization-forbidden decays of B mesons to charmonium

Ya-Qian Li, Meng-Kun Jia, Rui Zhou

2020, 44(11): 113104. doi: 10.1088/1674-1137/abae50

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Motivated by the large rates of

$\begin{document}$B\rightarrow (\chi_{c0}, \chi_{c2}, h_c)K$\end{document}$

decays observed by the

$\begin{document}$BABAR$\end{document}$

and Belle collaborations, we investigate the nonfactorizable contributions to these...

Dark matter search at colliders and neutrino floor

Qing-Hong Cao, An-Kang Wei, Qian-Fei Xiang

2020, 44(11): 113105. doi: 10.1088/1674-1137/abae53

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Abstract:
The sensitivity of the direct detection of dark matter (DM) approaches the so-called neutrino floor, below which it is difficult to disentangle the DM candidate from the neutrino background. In this work, we consider the scenario that no DM signals a...

Tetraquark candidates in LHCb's di-J/ψ mass spectrum

Zhi-Gang Wang

2020, 44(11): 113106. doi: 10.1088/1674-1137/abb080

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In this article, we study the first radial excited states of the scalar, axialvector, vector, and tensor diquark-antidiquark-type

$\begin{document}$cc\bar{c}\bar{c}$\end{document}$

tetraquark states with the QCD sum rules and obtain the masses and pole...

Yield ratio of hypertriton to light nuclei in heavy-ion collisions from

${ \sqrt{{ s}_{{NN}}}}$ = 4.9 GeV to 2.76 TeV

Tian-Hao Shao, Jin-Hui Chen, Che Ming Ko, Kai-Jia Sun, Zhang-Bu Xu

2020, 44(11): 114001. doi: 10.1088/1674-1137/abadf0

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We argue that the difference in the yield ratio

$\begin{document}${{{S}}_{\rm{3}}} = \dfrac{{{{{N}}_{_\Lambda ^3{\rm{H}}}}/{{{N}}_\Lambda }}}{{{{{N}}_{^3{\rm{He}}}}/{{{N}}_{{p}}}}}$\end{document}$

measured in Au+Au collisions at

\begin{document}$\rm \s...

Tianhao Shao, Jinhui Chen, Che Ming Ko, Kai-Jia Sun and Zhangbu Xu. Yield ratio of hypertriton to light nuclei in heavy-ion collisions from

$\begin{document}$ \rm \sqrt{s_{NN}} $\end{document}$

= 4.9 GeV to 2.76 TeV[J]. Chinese Physics C. doi: 10.1088/1674-1137/abadf0.

Cross-sections for

${{(n,2n)},\, {(n,\alpha)},\, {(n,p)},\, {(n,d)}}$ , and

${{(n,t)}}$ reactions on molybdenum isotopes in the neutron energy range of 13 to 15 MeV

Junhua Luo, Li Jiang

2020, 44(11): 114002. doi: 10.1088/1674-1137/abaded

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Given the insufficient cross-sectional data regarding the 14-MeV-neutron experiment of molybdenum, the vital fusion reactor structural material, and the significant heterogeneities among the reported values, this study examined the (n,2n), (n,α), (n,...

Decay properties of the Z_c(3900) through the Fierz rearrangement

Hua-Xing Chen

2020, 44(11): 114003. doi: 10.1088/1674-1137/abae4b

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We systematically construct all the tetraquark currents/operators of

$\begin{document}$J^{PC} = 1^{+-}$\end{document}$

with the quark configurations

$\begin{document}$[cq][\bar c \bar q]$\end{document}$

,

\begin{document}$[\bar c q][\bar q c]$\end{documen...

Hua-Xing Chen. Decay properties of the

$\begin{document}$ Z_c(3900)$\end{document}$

through the Fierz rearrangement[J]. Chinese Physics C. doi: 10.1088/1674-1137/abae4b.

Heavy flavor quenching and flow: the roles of initial condition, pre-equilibrium evolution, and in-medium interaction

Shu-Qing Li, Wen-Jing Xing, Feng-Lei Liu, Shanshan Cao, Guang-You Qin

2020, 44(11): 114101. doi: 10.1088/1674-1137/abadee

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Within an advanced Langevin-hydrodynamics framework coupled to a hybrid fragmentation-coalescence hadronization model, we study heavy flavor quenching and flow in relativistic heavy-ion collisions. We investigate how the initial heavy quark spectrum,...

Cross-section measurements for ^58,60,61Ni(n, α)^55,57,58Fe reactions in the 4.50 – 5.50 MeV neutron energy region

Haoyu Jiang, Zengqi Cui, Yiwei Hu, Jie Liu, Jinxiang Chen, Guohui Zhang, Yu. M. Gledenov, E. Sansarbayar, G. Khuukhenkhuu, L. Krupa, I. Chuprakov

2020, 44(11): 114102. doi: 10.1088/1674-1137/abadf2

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Abstract:
The cross sections at 5 energy points of the ⁵⁸Ni(n, α)⁵⁵Fe reaction were measured in the 4.50 MeV ≤ E_n ≤ 5.50 MeV region while those for the ⁶⁰Ni(n, α)⁵⁷Fe and ⁶¹Ni(n, α)⁵⁸Fe reactions were measured at E_n = 5.00 and 5.50 MeV using the 4.5 MV Van de ...

Orientation dichroism effect of proton scattering on deformed nuclei

Li Ou, Zhi-Gang Xiao

2020, 44(11): 114103. doi: 10.1088/1674-1137/abadf1

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Proton-induced scattering of ²³⁸U nuclei, with spheroidal deformations at beam energies above 100 MeV, is simulated using an improved quantum molecular dynamics model. The angular distribution of the deflected protons is highly sensitive to the orien...

Radiative decays of f₁(1285) as the

${ { K}^*\bar { K}}$ molecular state

Ju-Jun Xie, Gang Li, Xiao-Hai Liu

2020, 44(11): 114104. doi: 10.1088/1674-1137/abae51

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Abstract:
With

$\begin{document}$f_1(1285)$\end{document}$

as a dynamically generated resonance from

$\begin{document}$ K^*\bar K$\end{document}$

interactions, we estimate the rates of the radiative transitions of the

$\begin{document}$f_1(1285)$\end{document}$

meso...

Ju-Jun Xie, Gang Li and Xiao-Hai Liu. Radiative decays of

$\begin{document}$f_1(1285)$\end{document}$

as the

$\begin{document}$ K^*\bar K$\end{document}$

molecular state[J]. Chinese Physics C. doi: 10.1088/1674-1137/abae51.

Pion parton distribution function in light-front holographic QCD

Lei Chang, Khépani Raya, Xiaobin Wang

2020, 44(11): 114105. doi: 10.1088/1674-1137/abae52

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The valence-quark distribution function of the pion has been of interest for decades; particularly, the profile it should adopt when

$\begin{document}$x\to1$\end{document}$

(the large-x behavior) has been the subject of a long-standing debate. In the l...

Near-threshold K^*(892)⁺ meson production in the interaction of π⁻ mesons with nuclei

E. Ya. Paryev

2020, 44(11): 114106. doi: 10.1088/1674-1137/abae55

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We study the inclusive production of strange vector

$\begin{document}$K^*(892)^+$\end{document}$

mesons in

$\begin{document}${\pi^-}A$\end{document}$

reactions at near-threshold laboratory incident pion momenta of 1.4–2.0 GeV/c via a nuclear spectral fu...

E. Ya. Paryev. Near-threshold

$\begin{document}$ K^*(892)^+$\end{document}$

meson production in the interaction of

$\begin{document}$ \pi^-$\end{document}$

mesons with nuclei[J]. Chinese Physics C. doi: 10.1088/1674-1137/abae55.

Prediction of moment of inertia of rotating nuclei

Mohd Kh. M. Abu El Sheikh, A. A. Okhunov, H. Abu Kassim, M. U. Khandaker

2020, 44(11): 114107. doi: 10.1088/1674-1137/abb0dd

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In this study, the mathematical expression formulated by Bohr for the moment of inertia of even-even nuclei based on the hydrodynamical model is modified. The modification pertains to the kinetic energy of the surface oscillations, including the seco...

Modified astrophysical S-factor of ¹²C+¹²C fusion reaction at sub-barrier energies

Y. J. Li, X. Fang, B. Bucher, K. A. Li, L. H. Ru, X. D. Tang

2020, 44(11): 115001. doi: 10.1088/1674-1137/abae56

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The ¹²C+¹²C fusion reaction plays a crucial role in stellar evolution and explosions. Its main open reaction channels include

$\begin{document}$\alpha$\end{document}$

, p, n, and ⁸Be. Despite more than a half century of efforts, large differences remain...

Horizon thermodynamics in

${f(R,R^{\mu\nu}R_{\mu\nu}})$ theory

Haiyuan Feng, Rong-Jia Yang

2020, 44(11): 115101. doi: 10.1088/1674-1137/abadef

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We investigate whether the new horizon first law still holds in

$\begin{document}$f(R,R^{\mu\nu}R_{\mu\nu})$\end{document}$

theory. For this complicated theory, we first determine the entropy of a black hole by using the Wald method, and then derive th...

Haiyuan Feng and Rong-Jia Yang. Horizon thermodynamics in

$\begin{document}$f(R,R^{\mu\nu}R_{\mu\nu})$\end{document}$

theory[J]. Chinese Physics C. doi: 10.1088/1674-1137/abadef.

Cosmic acceleration caused by the extra-dimensional evolution in a generalized Randall-Sundrum model

Guang-Zhen Kang, De-Sheng Zhang, Chao Shi, Long Du, Dan Shan, Hong-Shi Zong

2020, 44(11): 115102. doi: 10.1088/1674-1137/abadec

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We investigate an

$\begin{document}$(n+1) $\end{document}$

-dimensional generalized Randall-Sundrum model with an anisotropic metric which has three different scale factors. One obtains a positive effective cosmological constant

\begin{document}$\Omega_...

Null geodesics, quasinormal modes, and thermodynamic phase transition for charged black holes in asymptotically flat and dS spacetimes

Shao-Wen Wei, Yu-Xiao Liu

2020, 44(11): 115103. doi: 10.1088/1674-1137/abae54

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A numerical study has indicated that there exists a relation between the quasinormal modes and the Davies point for a black hole. In this paper, we analytically study this relation for charged Reissner-Nordström black holes in asymptotically flat and...

2020 Vol. 44, No. 11