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2021 Vol. 45, No. 9

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PARTICLES AND FIELDS
Searching for dark matter particles using Compton scattering
Shang Wang, Changbo Fu, De-Chang Dai, Hongwei Wang, Gongtao Fan, Xiguang Cao, Yugang Ma
2021, 45(9): 093001. doi: 10.1088/1674-1137/ac0c0f
Abstract:
The dark matter puzzle is one of the most important fundamental physics questions in the 21st century. There is no doubt that solving the puzzle will be a new milestone for human beings in achieving a deeper understanding of nature. Herein, we propos...
Search for the doubly heavy baryons Ω0bc and Ξ0bc decaying to Λ+cπ and Ξ+cπ
R. Aaij, C. Abellán Beteta, T. Ackernley, B. Adeva, M. Adinolfi, H. Afsharnia, C.A. Aidala, S. Aiola, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, A. Alfonso Albero, Z. Aliouche, G. Alkhazov, P. Alvarez Cartelle, S. Amato, Y. Amhis, L. An, L. Anderlini, A. Andreianov, M. Andreotti, F. Archilli, A. Artamonov, M. Artuso, K. Arzymatov, E. Aslanides, M. Atzeni, B. Audurier, S. Bachmann, M. Bachmayer, J.J. Back, P. Baladron Rodriguez, V. Balagura, W. Baldini, J. Baptista Leite, R.J. Barlow, S. Barsuk, W. Barter, M. Bartolini, F. Baryshnikov, J.M. Basels, G. Bassi, B. Batsukh, A. Battig, A. Bay, M. Becker, F. Bedeschi, I. Bediaga, A. Beiter, V. Belavin, S. Belin, V. Bellee, K. Belous, I. Belov, I. Belyaev, G. Bencivenni, E. Ben-Haim, A. Berezhnoy, R. Bernet, D. Berninghoff, H.C. Bernstein, C. Bertella, A. Bertolin, C. Betancourt, F. Betti, Ia. Bezshyiko, S. Bhasin, J. Bhom, L. Bian, M.S. Bieker, S. Bifani, P. Billoir, M. Birch, F.C.R. Bishop, A. Bitadze, A. Bizzeti, M. Bjørn, M.P. Blago, T. Blake
2021, 45(9): 093002. doi: 10.1088/1674-1137/ac0c70
Abstract:
The first search for the doubly heavy \begin{document}$ {{{{\varOmega}_{bc}^{0}}}} $\end{document} baryon and a search for the \begin{document}$ {{{{\varXi}_{bc}^{0}}}} $\end{document} baryon are performed using \begin{document}$ pp $\end{document} c...
Inclusive production of fully-charmed 1+− tetraquark at B factory
Yingsheng Huang, Feng Feng, Yu Jia, Wen-Long Sang, De-Shan Yang, Jia-Yue Zhang
2021, 45(9): 093101. doi: 10.1088/1674-1137/ac0b38
Abstract:
Inspired by the recent discovery of the \begin{document}$ X(6900) $\end{document} meson in the \begin{document}$ {\mathsf{ LHCb}}$\end{document} experiment, we investigate the inclusive production rate of the \begin{document}$ C $\end{document}-odd f...
Exotic ˉD()sD() molecular states and scˉqˉc tetraquark states with JP=0+, 1+, 2+
Qi-Nan Wang, Wei Chen, Hua-Xing Chen
2021, 45(9): 093102. doi: 10.1088/1674-1137/ac0b3b
Abstract:
We have calculated the mass spectra for the \begin{document}$\bar{D}_s^{(*)}D^{(*)}$\end{document} molecular states and \begin{document}$sc\bar q\bar c$\end{document} tetraquark states with \begin{document}$J^P=0^+, 1^+, 2^+$\end{document}. The masse...
NLO effects for ΩQQQ baryons in QCD Sum Rules
Ren-Hua Wu, Yu-Sheng Zuo, Ce Meng, Yan-Qing Ma, Kuang-Ta Chao
2021, 45(9): 093103. doi: 10.1088/1674-1137/ac0b3c
Abstract:
We study the triply heavy baryons \begin{document}$\Omega_{QQQ}$\end{document} \begin{document}$(Q=c, b)$\end{document} in the QCD sum rules by performing the first calculation of the next-to-leading order (NLO) contribution to the perturbative QCD p...
X(2900) in a chiral quark model
Yue Tan, Jialun Ping
2021, 45(9): 093104. doi: 10.1088/1674-1137/ac0ba4
Abstract:
Recently, the LHCb Collaboration reported their observation of the first two fully open-flavor tetraquark states named \begin{document}$ X_0 $\end{document}(2900) and \begin{document}$ X_1 $\end{document}(2900) with unknown parity. Inspired by the re...
Precise evaluation of hcˉc and axion-like particle production
Shi-Yuan Li, Zhen-Yang Li, Peng-Cheng Lu, Zong-Guo Si
2021, 45(9): 093105. doi: 10.1088/1674-1137/ac0c0d
Abstract:
We study the decay of the SM Higgs boson to a massive charm quark pair at the next-to-next-to-leading order QCD and next-to-leading order electroweak. At the second order of QCD coupling, we consider the exact calculation of flavour-singlet contribut...
Scalar neutrino dark matter in the BLMSSM
Ming-Jie Zhang, Shu-Min Zhao, Xing-Xing Dong, Zhong-Jun Yang, Tai-Fu Feng
2021, 45(9): 093106. doi: 10.1088/1674-1137/ac0c0e
Abstract:
The BLMSSM is an extension of the minimal supersymmetric standard model (MSSM). Its local gauge group is \begin{document}$SU(3)_C \times SU(2)_L \times U(1)_Y \times U(1)_B \times U(1)_L$\end{document}. Supposing the lightest scalar neutrino is a dar...
Probing top-philic new physics via four-top-quark production
Qing-Hong Cao, Jun-Ning Fu, Yandong Liu, Xiao-Hu Wang, Rui Zhang
2021, 45(9): 093107. doi: 10.1088/1674-1137/ac0c6f
Abstract:
We explore constraints on various new physics resonances from four top-quark production based on current experimental data. Both light and heavy resonances are studied in this work. A comparison of the full width effect and narrow width approximation...
Probing magnetic moment operators in Hγ production and Hτ+τγ rare decay
Qing-Hong Cao, Hao-Ran Jiang, Bin Li, Yandong Liu, Guojin Zeng
2021, 45(9): 093108. doi: 10.1088/1674-1137/ac0e88
Abstract:
The magnetic moment (\begin{document}$ a_\gamma $\end{document}) and weak magnetic moment (\begin{document}$ a_W $\end{document}) of charged leptons and quarks are sensitive to quantum effects of new physics heavy resonances. In effective field theor...
New physics and two boosted W-jets plus missing energy
Qing-Hong Cao, Nuo Chen, Hao-Ran Jiang, Bin Li, Yandong Liu
2021, 45(9): 093109. doi: 10.1088/1674-1137/ac0e8a
Abstract:
We show that the signature of two boosted W-jets plus substantial missing energy is very promising for probing heavy charged resonances (\begin{document}$X^\pm$\end{document}) through the process of \begin{document}$pp\to X^+X^-\to W^+W^- X^0 X^0$\en...
Single top quark production with and without a Higgs boson
Qing-Hong Cao, Hao-ran Jiang, Guojin Zeng
2021, 45(9): 093110. doi: 10.1088/1674-1137/ac0e8b
Abstract:
One method of probing new physics beyond the Standard Model is to check the correlation among higher-dimensional operators in the effective field theory. We examine the strong correlation between the processes \begin{document}$ pp\rightarrow tHq $\en...
Color halo scenario of charmonium-like hybrids
Yunheng Ma, Wei Sun, Ying Chen, Ming Gong, Zhaofeng Liu
2021, 45(9): 093111. doi: 10.1088/1674-1137/ac0ee2
Abstract:
The internal structures of \begin{document}$J^{PC} = 1^{--}, (0,1,2)^{-+}$\end{document} charmonium-like hybrids are investigated under lattice QCD in the quenched approximation. We define the Bethe-Salpeter wave function (\begin{document}$ \Phi_n(r)...
Lax connections in TˉT-deformed integrable field theories
Bin Chen, Jue Hou, Jia Tian
2021, 45(9): 093112. doi: 10.1088/1674-1137/ac0ee4
Abstract:
In this work, we attempt to construct the Lax connections of \begin{document}$ T\bar{T} $\end{document}-deformed integrable field theories in two different ways. With reasonable assumptions, we make an ansatz and find the Lax pairs in the \begin{docu...
NUCLEAR PHYSICS
Effect of pairing correlation on low-lying quadrupole states in Sn isotopes
Shuai Sun, Shi-Sheng Zhang, Zhen-Hua Zhang, Li-Gang Cao
2021, 45(9): 094101. doi: 10.1088/1674-1137/ac0b39
Abstract:
We examined the low-lying quadrupole states in Sn isotopes in the framework of fully self-consistent Hartree-Fock+BCS plus QRPA. We focus on the effect of the density-dependence of pairing interaction on the properties of the low-lying quadrupole sta...
Cross section of the Coulomb excitation of 229mTh by low energy muons
E. V. Tkalya
2021, 45(9): 094102. doi: 10.1088/1674-1137/ac0b3a
Abstract:
The inelastic scattering cross section for muons, \begin{document}$ \mu^- $\end{document}, with energies \begin{document}$ E $\end{document} = 9–100 eV from the \begin{document}$ ^{229} $\end{document}Th nuclei is calculated in the framework of the s...
Symmetric and asymmetric structural evolutions of Te isotopes across the N = 82 shell closure
Hui Jiang, Yi-jie Zhou, Yang Lei, Jia-Jie Shen, Man Bao
2021, 45(9): 094103. doi: 10.1088/1674-1137/ac0ce1
Abstract:
Systematic calculations of low-lying energy levels, \begin{document}$B(E2)$\end{document} transitions, and g factors of even-even tellurium isotopes with mass numbers from 128 to 140 are performed via the nucleon-pair approximation (NPA) of the shell...
On the structure in the ΛN cross section at the ΣN threshold
Johann Haidenbauer, Ulf-G. Meißner
2021, 45(9): 094104. doi: 10.1088/1674-1137/ac0e89
Abstract:
The complexity of threshold phenomena is exemplified on a prominent and long-known case - the structure in the \begin{document}$\Lambda p$\end{document} cross section (invariant mass spectrum) at the opening of the \begin{document}$\Sigma N$\end{docu...
The entrance channel effect on the synthesis of a superheavy element 296119
D. Naderi, B. Sharifi
2021, 45(9): 094105. doi: 10.1088/1674-1137/ac0ee3
Abstract:
In this study, we investigated the entrance channel effect on the evaporation residue cross section of a superheavy element 296119. Using 29 projectile-target combinations, we investigated the role of the entrance channel on the 3n and 4n evaporation...
Core breaking and possible magnetic rotation in the semimagic nucleus 90Zr
Hao Wang, Ke-Yan Ma, Si-Ying Liu, Jing-Bin Lu
2021, 45(9): 094106. doi: 10.1088/1674-1137/ac0fd2
Abstract:
The semimagic nucleus 90Zr, with Z = 40 and N = 50, is investigated in terms of large scale shell model calculations. A logical agreement is obtained between the available experimental data and predicted values. The calculated results indicate that t...
PARTICLE AND NUCLEAR ASTROPHYSICS AND COSMOLOGY
Note on gauge invariance of second order cosmological perturbations
Zhe Chang, Sai Wang, Qing-Hua Zhu
2021, 45(9): 095101. doi: 10.1088/1674-1137/ac0c74
Abstract:
We study the gauge invariant cosmological perturbations up to the second order. We demonstrate that there are infinite families of gauge invariant variables at both the first and second orders. The conversion formulae among different families are ver...

ISSN 1674-1137 CN 11-5641/O4

Original research articles, Ietters and reviews Covering theory and experiments in the fieids of

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  • Nuclear physics
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  • Cosmology
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