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<jats:title>Abstract</jats:title> <jats:p>A three Higgs-doublet model admitting an $S_3$-symmetry can predict the observed pattern of the quark masses and their mixings. However the same symmetry also introduces potential flavour-changing neutral currents at the tree level. We assume in this work that the scalar potential contains appropriate \emph{soft} $S_3$-breaking terms in order to keep the choices of the scalar masses flexible. We identify the parameters in the Yukawa Lagrangian in the quark sector responsible for such FCNCs and constrain them using data from some of the flavour physics observables like meson-decays and meson-mixings. We also validate the corresponding model parameter space with renormalisation group (RG) evaluation. 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>We study the dynamical properties of thermodynamic phase transition (PT) of the charged AdS black hole (BH) with global monopole via the Gibbs free energy landscape and reveal the effects of the global monopole on the kinetics of thermodynamic PTs. First, we briefly review the thermodynamics of the charged AdS BH with global monopole. Then, we introduce the Gibbs free energy landscape to investigate the thermodynamic stability of BH states. Because of thermal fluctuations, the small black hole (SBH) state can transit to the large black hole (LBH) state, and vice versa. Moreover, we use the Fokker-Planck equation with the reflecting boundary condition to study the probability evolution of the BH state with and without a global monopole separately. We find that for both the SBH and LBH states, the global monopole could slow down the evolution of the BH state. In addition, we obtain the relationship between the first passage time and the monopole parameter $\eta$. The result shows that as the monopole parameter $\eta$ increases, the mean first passage time will be longer for both the SBH and LBH states.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>The flux-averaged cross-sections 〈σ(<jats:italic>E</jats:italic> <jats:sub>γmax</jats:sub>)〉 for the reactions <jats:sup>65</jats:sup>Cu(γ,<jats:italic>n</jats:italic>)<jats:sup>64</jats:sup>Cu, <jats:sup>63</jats:sup>Cu(γ,<jats:italic>n</jats:italic>)<jats:sup>62</jats:sup>Cu, <jats:sup>63</jats:sup>Cu(γ,<jats:italic>2n</jats:italic>)<jats:sup>61</jats:sup>Cu and <jats:sup>63</jats:sup>Cu(γ,<jats:italic>3n</jats:italic>)<jats:sup>60</jats:sup>Cu have been measured within the bremsstrahlung end-point energies <jats:italic>E</jats:italic> <jats:sub>γmax</jats:sub> range of 35–94 MeV. The experiments were performed with the electron beam from the NSC KIPT linear accelerator LUE-40 with the use of the activation and off-line γ-ray spectrometric technique. Theoretical calculation of the flux-average cross-sections 〈σ(<jats:italic>E</jats:italic> <jats:sub>γmax</jats:sub>)〉<jats:sub>th</jats:sub> was carried out using the cross-section σ(<jats:italic>E</jats:italic>) values from the TALYS1.95 code with the default options. It is shown that the experimental average cross-sections for the reactions <jats:sup>65</jats:sup>Cu(γ,<jats:italic>n</jats:italic>)<jats:sup>64</jats:sup>Cu, <jats:sup>63</jats:sup>Cu(γ,<jats:italic>n</jats:italic>)<jats:sup>62</jats:sup>Cu, <jats:sup>63</jats:sup>Cu(γ,<jats:italic>2n</jats:italic>)<jats:sup>61</jats:sup>Cu are systematically higher than the theoretical estimates based on the TALYS1.95 code. The obtained 〈σ(<jats:italic>E</jats:italic> <jats:sub>γmax</jats:sub>)〉 supplement the data of different laboratories for the (γ,<jats:italic>n</jats:italic>) and (γ,<jats:italic>2n</jats:italic>) reactions of <jats:sup>63</jats:sup>Cu and <jats:sup>65</jats:sup>Cu. For the reaction <jats:sup>63</jats:sup>Cu(γ,<jats:italic>3n</jats:italic>)<jats:sup>60</jats:sup>Cu, the values of 〈σ(<jats:italic>E</jats:italic> <jats:sub>γmax</jats:sub>)〉 were measured for the first time.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>The exclusive $\pi^0$ electroproduction is analyzed within the handbag approach based on Generalized Parton Distributions (GPDs) factorization. We consider the leading-twist contribution together with the transversity effects. It is shown that the transversity, $H_T$ and $\bar E_T$ GPDs are essential in the description of $\pi^0$ cross section. Predictions for future Electron-Ion Collider of China (EicC) energy range are done. It is found that transversity dominance $\sigma_T\gg\sigma_L$, observed at low energies is valid up to EicC energy range.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>As well we know when the vacuum polarization in the quantum electrodynamics emerges, the non-linear interaction between the electromagnetic fields should be considered. And the corresponding field of non-linear electrodynamics could have important effects on black hole physics. In this work, we focus on the relationship between the observable quantity--the shadow radius and the first-order phase transition for the non-linear charged AdS black hole in the frame of the Einstein-power-Yang-Mills gravity. The results show that under a certain condition there exist the first-order phase transition both from the viewpoint of the shadow radius and the horizon radius which are as the function with temperature (or pressure). From the viewpoint of the shadow radius, the phase transition temperature is higher than that from the viewpoint of the horizon radius with the same condition. This may be due to the non-linear Yang Mills charge and the gravitational effect. These indicate that the shadow radius can be regarded a probe to reveal the thermodynamic phase transition information of black holes. When the system is undergoing the phase transition in two cases of the different non-linear YM charge parameter: $\gamma=1,~1.5$, the thermal profiles of the coexistent big and small black hole phases with the temperature are presented. Furthermore, the effects of non-linear YM charge parameter on the shadow radius and the thermal profile are also investigated.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 this paper, we study the collapsing scenario for the {\bf k-}essence emergent Vaidya spacetime in the context of massive gravity's rainbow. For this study, we consider that the background metric is Vaidya spacetime in massive gravity's rainbow. We show that the {\bf k-}essence emergent gravity metric resembles closely to the new type of generalized Vaidya massive gravity metric with the rainbow deformations for null fluid collapse where we consider the {\bf k-}essence scalar field as a function solely of the advanced or the retarded time. The {\bf k-}essence emergent Vaidya massive gravity rainbow mass function is also different. This new type {\bf k-}essence emergent Vaidya massive gravity rainbow metric has satisfied the required energy conditions. The existence of the locally naked central singularity, the strength and the strongness of the singularities for the rainbow deformations of the {\bf k-}essence emergent Vaidya massive gravity metric are the interesting outcomes of the present work.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>The influence of the neck parameter on the fission dynamics at low excitation energy is studied based on the three-dimensional Langevin approach in which the nuclear shape is described with the two-center shell model (TCSM) parametrization, and the elongation, the mass asymmetry and the fragment deformation are set to be the generalized coordinates of the Langevin equation. We first study the influence of the neck parameter on the scission configuration. We find that there is almost no obvious correlation between the neck parameter ε and the mass asymmetry η at the scission point indicating that the ε has no obvious impact on the fragment mass distribution. The elongation Z0/R0 and its correlation with the mass asymmetry η at the scission point are obviously influenced by the neck parameter ε, which has a strong effect on the total kinetic energy (TKE) distribution of fragments. The pre-neutron emission fragment mass distributions for 14 MeV n+^{233,235,238}U and ^{239}Pu are calculated and then based on these results the post-neutron emission fragment mass distributions are obtained by using the experimental data of prompt neutron emission. The calculated post-neutron emission fragment mass distributions can reproduce the experimental data well. The TKE distributions for 14 MeV n+^{235}U fission are calculated for ε=0.25,0.35,0.45, and the results show that the TKE distribution cannot be described very well for the three cases. However, the trend of the calculated TKE distribution with ε is just as that is expected from the scission configuration calculations and the results with ε=0.35 present a better agreement with the experiment data compared with the other two cases.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>In the framework of the 3-3-1 model with neutral leptons, we have investigated the lepton-flavor-violating sources based on the Higgs mass spectrum which has two neutral Higgses identitied with corresponding ones in the Two-Higgs-Doublet model (THDM). On the $13~\mathrm{TeV}$ scale of the LHC, we point out the parameter space regions where the experimental limits of $e_i \rightarrow e_j\gamma$ decays are satisfied. These regions depend heavily on the mixing of exotic leptons but are predicted to have large $h^0_1\rightarrow \mu \tau$ signals. We also show that $\mathrm{Br}(h^0_1\rightarrow \mu \tau)$ can reach a value of $10^{-4}$.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 perturbative QCD (PQCD) approach based on $k_T$ factorization has made a great achievement for the QCD calculation of the hadronic B decays. Regulating the endpoint divergence by the transverse momentum of quarks in the propagators, one can do the perturbation calculation for kinds of diagrams including the annihilation type diagrams. In this paper, we review the current status of PQCD factorization calculation of two-body charmless $B\to PP, PV, VV$ decays up to the next-to-leading order (NLO) QCD corrections. two new power suppressed terms in decaying amplitudes are also taken into account. By using the universal input (non-perturbative) parameters, we collected the branching ratios and ${\bf CP}$ asymmetry parameters for all the charmless two body $B$ decays, calculated in the PQCD approach up to the NLO. The results are compared with the ones from QCD factorization approach, soft-collinear effective theory approach and the current experimental measurements. For most considered B meson decays, the PQCD results for branching ratios agree well with other approaches and the experimental data. The PQCD predictions for the ${\bf CP}$ asymmetry parameters for many of the decay channels do not agree with other approaches, but have a better agreement with the experimental data. The longstanding $K \pi $ puzzle about the pattern of the direct CP asymmetries of the penguin-dominated $B \to K \pi $ decays can be understood after the inclusion of the NLO contributions in PQCD. The NLO corrections and power suppressed terms play an important role in the color suppressed and pure annihilation type $B$ decay modes. These rare decays are more sensitive to different types of corrections, providing opportunity to examine the factorization approach with the more precise experimental 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>In this work we study the quasi-two-body decays $B\to K^*\gamma\to K\pi\gamma$ in perturbative QCD(PQCD) approach. The two-meson distribution amplitudes (DAs) are introduced to describe the final state interactions of the $K\pi$ pair, which involve the time-like form factors and the Gegenbauer polynomials.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. We calculate the CP averaged branching ratios for the $B_{(s)}\to K^*\gamma\to K\pi\gamma$ decays. Our results are in agreement with the new update data measured by Belle II, which suggests these quasi-two-body decays are more appropriate to be analyzed in three-body framework than in the two-body one. We also predict the direct CP-violation asymmetries for the considered decay modes and find that $A_{CP}(B_{u,d}\to K^*\gamma\to K\pi\gamma)$ is small and less than $1\%$ in magnitude, while $A_{CP}(B_{s}\to K^*\gamma\to K\pi\gamma)$ is larger and can arrive at a few percent. Our predictions can be tested by the future B meson experiments.</jats:p>