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<jats:title>Abstract</jats:title> <jats:p>The physical state of $\rho$-$\omega$-$\phi$ mesons can be mixed by the unitary matrix. The decay processes of $\omega \rightarrow \pi^{+}\pi^{-}$ and $\phi \rightarrow \pi^{+}\pi^{-}$ are from the isospin symmetry breaking. The $\rho-\omega$, $\rho-\phi$ and $\omega-\phi$ interferences lead to resonance contribution to produce the strong phases. The $CP$ asymmetry is considered from above isospin symmetry breaking due to the new strong phase for the first order. It has been found the $CP$ asymmetry can be enhanced greatly for the decay process of $B^{0}\rightarrow\pi^+\pi^{-}\eta^{(')}$ when the invariant masses of the $\pi^+\pi^{-}$ pairs are in the area around the $\omega$ resonance range and the $\phi$ resonance range in perturbative QCD. We also discuss the possibility to search the predicted $CP$ violation at the LHC. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>Although $d^*(2380)$ was first observed by WASA@COSY, its existence has yet to be further confirmed in different types of processes at other facilities. In this work, the possible production of the single dibaryon state $d^*(2380)$ in the process of $p\bar{p}\to d^*(2380)\bar{p}\bar{n}$ at future experiment of $\bar{\rm{P}}$anda is estimated. Following the method used in our previous study (Chinese Physics C {\bf 46}, 023105) a phenomenological Lagrangian approach is employed to study the single $\ds$ production. Based on the conclusions obtained by the non-relativistic constituent quark model, the cross section of the $p\bar{p}\to d^*(2380)\bar{p}\bar{n}$ reaction via the $\Delta\bar{\Delta}$ intermediate state is estimated, which is in the order of $nb$. It is shown that the dominant contribution comes from the diagram with the $\bar{\Delta}\bar{\Delta}\to \bar{p}\bar{n}$ subprocess. However it is difficult to measure due to large background. On the other hand, although the cross section of the diagram with the $\bar{d^*}\to \bar{p}\bar{n}$ subprocess is small, only about $(3\sim 4)\%$ of the total cross section, the corresponding number of events is still large enough and can be measured at $\bar{\rm{P}}$anda, because the outgoing $\bar{p}$ and $\bar{n}$ come from the same source $\bar{d^*}$.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>In this work, we adopt self-consistent Hartree-Fock-Bogliubov (HFB) with proton-neutron quasi-particle random phase approximation (pnQRPA) based on Skyrme force for the calculation of $\beta^-$ decay half-lives for nuclei with N$\sim$82 and 126 on possible r-process paths. In the calculations, the Skyrme interaction ({\it e. g.} SKO$^\prime$) is adopted and the tensor interaction is added self-consistently in both HFB and QRPA calculations. We systematically study how the half-life is changed by varying strength of the triplet-even (TE) and triplet-odd (TO) components as well as the IS pairing. We find that the strength variation of IS pairing by about 20\% does not produce substantial effect on $\beta$-decay rates whenever with or without tensor force, while the strength variation of TO tensor force plays an important role on the change of the $\beta$-decay half-lives for very neutron rich N$\sim$82 and N$\sim$126 isotonic chains. In addition, with the inclusion of the tensor force the GT decay becomes dominant for very neutron-rich nuclei.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>Taking the quantum electrodynamics (QED) effect into account, we study the black hole phase transition and Ruppeiner geometry for the Euler-Heisenberg anti-de Sitter black hole in the extended phase space. For negative and small positive QED parameter, we observe a small/large black hole phase transition and reentrant phase transition, respectively. While a large positive value of the QED parameter ruins the phase transition. The phase diagrams for each case are explicitly exhibited. Then we construct the Ruppeiner geometry in the thermodynamic parameter space. Different features of the corresponding scalar curvature are shown for both the small/large black hole phase transition and reentrant phase transition cases. Of particular interest is that an additional region of positive scalar curvature indicating dominated repulsive interaction among black hole microstructure is present for the black hole with a small positive QED parameter. Furthermore, the universal critical phenomena are also observed for the scalar curvature of the Ruppeiner geometry. These results indicate that the QED parameter has a crucial influence on the black hole phase transition and microstructure.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>Previous studies have indicated that the peak of the quarkonium entropy at the deconfinement transition can be related to the entropic force which would induce the dissociation of heavy quarkonium. In this paper, we study the entropic force in a rotating hot and dense medium using AdS/CFT correspondence. It turns out that the inclusion of angular velocity increases the entropic force thus enhancing quarkonium dissociation, while chemical potential has the same effect. Furthermore, the results imply that the quarkonium dissociates easier in rotating medium compared to static case.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>The isotopic cross sections of residual nuclei produced in fragmentation reactions of 18O projectiles impinging on a carbon target at around 260 MeV/nucleon were measured at the HIRFL facility in Lanzhou (China). A full identification in atomic and mass numbers of fragments was obtained from the determination of their magnetic rigidity, energy loss, and time of flight. The production cross sections for a dozen of nitrogen, carbon, and boron isotopes were determined with uncertainties below 30% for most of the cases. The obtained cross sections for N and B isotopes show a rather good agreement with previous experimental data obtained with different projectile’s energies. The cross sections for some C isotopes seem to exhibit a dependence on the projectile’s energy. A comparison of the data and several theoretical model calculations are presented.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>Associated production of a dark particle and a photon, represented as a mono-$\gamma$ event, is a promising channel to probe particle contents and dynamics in the dark sector. In this paper we study properties of the mono-$\gamma$ production of a vector dark matter at future $e^+e^-$ colliders. The photon-like and Pauli operators, as well as triple gauge bosons interactions involving the dark matter, are considered in the framework of Effective Field Theory. We show that, comparing to the Pauli operator, the triple gauge bosons couplings are much more interesting at high energy collider. Beam polarization effects are also analyzed, and we show that the experimental sensitivities can not be enhanced significantly because of the smaller luminosity. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>In the Standard Model Effective Field Theory (SMEFT), operators involving the top quark are generally difficult to probe, and can generate sizable loop contributions to the electroweak precision observables, measured by past and future lepton colliders. Could the high precision of the electroweak measurements compensate the loop suppression and provide competitive reaches on these operators? Would the inclusion of these contributions introduce too many additional parameters for a meaningful global electroweak analysis to be done? In this paper, we perform a detailed phenomenological study to address these two important questions. Focusing on eight dimension-6 operators that generate anomalous couplings between the electroweak gauge bosons and the third-generation quarks, we calculate their one loop contributions to the $e^+e^- \to f\bar{f}$ processes both on and off the Z-pole and the $e^-e^+ \to WW$ process. A global analysis is performed with these eight operators and the ones that contribute to the above processes at tree level, using the measurements at LEP, SLC and several low energy experiments. We find that, while the current electroweak precision measurements are sensitive to the one-loop effects of the top-quark operators, it is difficult to separate them from the operators that contribute at the tree level, making a global analysis rather challenging. Under more assumptions, competitive reaches could be obtained in a global fit. Another important finding of our study is that the two operators that generate dipole interactions of the bottom quark have significant impacts in the Z-pole measurements and should not be omitted. We also discuss the implication of the recently reported W-boson mass measurement at CDF to our results. Finally, we estimate the reaches of future lepton colliders in probing the top-quark operators with precision electroweak measurements. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd</jats:p>

<jats:title>Abstract</jats:title> <jats:p>The critical parameters of the liquid-gas phase transition of symmetric nuclear matter are computed in the Brueckner-Hartree-Fock method at finite temperature employing different realistic nucleon-nucleon potentials. Temperature effects on single-particle potentials, defect functions, and three-body forces are discussed in detail. Results obtained from the full procedure and the frozen-correlations approximation are compared. We find critical temperatures of about 14 to 19 MeV and critical densities in the range 0.04 to 0.08 fm<jats:sup>-3</jats:sup>, depending on the interactions employed.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>The dibaryon concept for the nuclear force is presented, assuming that the main attraction between the nucleons at medium distances is determined by the <jats:italic>s</jats:italic>-channel exchange of an intermediate six-quark (dibaryon) state. To construct the respective <jats:italic>NN</jats:italic> interaction model, a microscopic six-quark description of the <jats:italic>NN</jats:italic> system is used, in which symmetry aspects play a special role. It is shown that the <jats:italic>NN</jats:italic> interaction in all important partial waves can be described properly by a superposition of the long-range <jats:italic>t</jats:italic>-channel one-pion exchange and the <jats:italic>s</jats:italic>-channel exchange by an intermediate dibaryon. The developed model gives a good description of both elastic phase shifts and inelasticities of <jats:italic>NN</jats:italic> scattering in all <jats:italic>S</jats:italic>, <jats:italic>P</jats:italic>, <jats:italic>D</jats:italic> and <jats:italic>F</jats:italic> partial waves at energies from zero to 600–800 MeV and even higher. The parameters of the intermediate six-quark states corresponding to the best fit of <jats:italic>NN</jats:italic> scattering data are found to be consistent with the parameters of the known dibaryon resonances in those <jats:italic>NN</jats:italic> partial configurations where their existence has been experimentally confirmed. Predictions for new dibaryon states are given as well.</jats:p>