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<jats:title>Abstract</jats:title> <jats:p>In this paper, we study the quasinormal mode and late-time tail of charged massless scalar perturbations of a black hole in the generalized Rastall gravity. The black hole metric in question is spherically symmetric, accompanied by a power-Maxwell field surrounded by a quintessence fluid. It is shown that the massless scalar field, when {\it dressed up} with the magnetic field, acquires an effective mass which, in turn, significantly affects the properties of the resultant quasinormal oscillations and late-time tails. To be specific, the quasinormal frequencies become distorted and might even be unstable for particular spacetime configurations. Also, the exponent of the usual power-law tail is modified in accordance with the modification in the structure of the branch cut of the retarded Green's function. In particular, as the effective mass is generated dynamically due to the presence of the magnetic field, one may consider a process through which the field is gradually removed from the spacetime configuration. In this context, while the quasinormal oscillations converge to the case of massless perturbations, we argue that the properties of resultant late-time tails do not fall back to their massless counterpart. The relevant features are investigated by numerical and analytic approaches.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>We have investigated the tidal forces and geodesic deviation motion in the spacetime of a black hole in the galaxy with dark matter halo. Our results show that the tidal force and geodesic deviation motion depend on the dark matter halo mass and the typical lengthscale of galaxy. The effect of the typical lengthscale of galaxy on tidal force is opposite to that of dark matter mass. For the radial tidal force, with the increasing mass of dark matter, it increases in the region far from the black hole, but decreases in the region near black hole. For the angular tidal force, its absolute value of angular tidal force monotonously increases with the dark matter halo mass. Especially, the angular tidal force also depends on the particle's energy and the effects of dark matter become more distinct for the test particle with high energy, which is different from those in the usual static black hole spacetimes. We also present the change of geodesic deviation vector with the dark matter halo mass and the typical lengthscale of galaxy under two kinds of initial conditions.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>$\Omega^{-}$ baryon with sss quarks has been scarcely observed in the experiments so far and has been studied through many theoretical studies only. Here, an attempt has been made to explore properties of $\Omega$ with hypercentral Constituent Quark Model (hCQM) with a linear confining term. The resonance mass spectra has been obtained for 1S-4S, 1P-4P, 1D-3D and 1F-2F respectively. The Regge trajectory has been investigated for the linear nature based on calculated data alongwith the magnetic moment. The present work has been compared with various approaches and known experimental findings. 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 impact of jet quenching on $p_{T}$ dispersion($p_{T}D$) of inclusive jets ($R=0.2$) in Pb+Pb collisions at $\sqrt{s}=2.76$~TeV. The partonic spectrum in the initial hard scattering of elementary collisions are obtained by an event generator POWHEG+PYTHIA, which matches the next-to-leading (NLO) matrix elements with parton showering, and energy loss of fast parton traversing in hot/dense QCD medium is calculated by Monte Carlo simulation within Higher-Twist formalism of jet quenching in heavy-ion collisions. We present the model calculations of normalized $p_{T}D$ distributions for inclusive jets in p+p and Pb+Pb collisions at $\sqrt{s}=2.76$~TeV, which give nice descriptions of ALICE measurements. It is shown that the $p_{T}D$ distributions of inclusive jets in Pb+Pb significantly shifts to higher $p_{T}D$ region relative to that in p+p. Thus the nuclear modification ratio of $p_{T}D$ distributions for inclusive jets is smaller than unity at small $p_{T}D$ region, while larger than one at large $p_{T}D$ region. This behavior results from more uneven $p_T$ distribution of jet constituents as well as the fraction alteration of quark/gluon initiated jets in heavy-ion collisions. The difference of $p_{T}D$ distributions between groomed and ungroomed jets in Pb+Pb collisions are also discussed. 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>New vectorlike quarks have been proposed in many scenarios of new physics beyond the Standard Model that address the hierarchy problem, which can be potentially discovered at the Large Hadron Collider~(LHC). Based on a model-independent framework, we propose to search for the vectorlike $B$-quark~(VLQ-$B$) and concentrate on resonant production via $b$-gluon fusion through chromomagnetic interactions. We then explore the possible signals of the VLQ-$B$ through the $B\to tW$ decay mode at the 14 TeV LHC. After a fast simulation of signal and background events, the $2\sigma$ excluded regions and the $5\sigma$ discovery reach in the parameter plane of $\kappa_{B}-m_B$, are, respectively, obtained at the LHC with 300~(3000) fb$^{-1}$ of integrated luminosity in the dilepton final states.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>For higher loop computation, one of main topics is to find the effective reduction method. Recently there is an alternative reduction method proposed by Chen in \cite{chen1,chen2}. In this paper, using the one-loop scalar integrals with propagators having higher power, we test the power of Chen's new method. More explicitly, with the improved version of the method we can cancel the dimension shift and terms having unwanted power shifting. Thus the obtained IBP relations are much more simpler and can be solved easily. Using this method we present the explicit examples of bubble, triangle, box and pentagon with one propagators doubled. With these results, we complete our previous computations in \cite{wang} with the missed tadpole coefficients and show the potential of Chen's method for efficient reduction of higher loopintegrals. 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 <jats:sup>12</jats:sup>C+<jats:sup>12</jats:sup>C fusion reaction was studied in the range of E<jats:sub>c.m.</jats:sub>=8.9 MeV to 21 MeV using the active-target Time Projection Chamber. With the full information of all the tracks of the reaction products, the cross section of the <jats:sup>12</jats:sup>C(<jats:sup>12</jats:sup>C,<jats:sup>8</jats:sup>Be)<jats:sup>16</jats:sup>O<jats:sub>gs</jats:sub> channel and the <jats:sup>12</jats:sup>C(<jats:sup>12</jats:sup>C,3α)<jats:sup>12</jats:sup>C channel have been measured down to the level of a few milibarns. The <jats:sup>12</jats:sup>C(<jats:sup>12</jats:sup>C,<jats:sup>8</jats:sup>Be)<jats:sup>16</jats:sup>O<jats:sub>gs</jats:sub> reaction channel is determined to be 10<jats:sub>-8</jats:sub> <jats:sup>+24</jats:sup> mb at E<jats:sub>c.m.</jats:sub>=11.1 MeV, supporting the direct α transfer reaction mechanism. The <jats:sup>12</jats:sup>C(<jats:sup>12</jats:sup>C,3α)<jats:sup>12</jats:sup>C reaction channel was studied for the first time using the exclusive measurement. Our result does not confirm the anomaly behavior reported in the previous inclusive measurement. Our comparisons with the statistical model calculations suggest that the 3α channel is dominated by the fusion evaporation process at E<jats:sub>c.m.</jats:sub>&gt;19 MeV. The additional contribution of the 3α channel increases the fusion reaction cross section by 10% at energies above 20 MeV. We also find that additional reaction mechanism is needed to explain the measured cross section at E<jats:sub>c.m.</jats:sub>&lt; 15 MeV where the statistical model prediction vanishes.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>We study the ground-state properties of $\prescript{6}{YY}{\text{He}}$ double hyperon for $\lla$ and $\ooa$ nuclei in a three-body model $(Y+Y+\alpha)$. We solve two coupled Faddeev equations corresponding to three-body configurations $(\alpha Y,Y)$ and $(YY, \alpha)$ in configuration space with the hyperspherical harmonics expansion method by employing the most recent hyperon-hyperon interactions obtained from lattice QCD simulations. Our numerical analysis for $\lla$, using three $\Lambda\Lambda$ lattice interaction models, leads to a ground state binding energy in the domain $(-7.468, -7.804)$ MeV and the separations $\langle r_{\Lambda-\Lambda} \rangle$ and $\langle r_{\alpha-\Lambda} \rangle$ in the domains $(3.555, 3.629)$ fm and $(2.867 , 2.902 )$ fm, correspondingly. The binding energy of double-$\Omega$ hypernucleus $\ooa$ leads to $-67.21$ MeV and consequently to smaller separations $\langle r_{\Omega-\Omega} \rangle = 1.521$ fm and $\langle r_{\alpha-\Omega} \rangle = 1.293 $ fm. Besides the geometrical properties, we study the structure of ground-state wave functions and show that the main contributions are from the $s-$wave channels. Our results are consistent with the existing theoretical and experimental data.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>In the present work, we systematically study the proton radioactivity half-lives of 33 spherical nuclei based on the relationship between the Skyrme parameters and the macroscopic quantities of nuclear matter. Using the two-potential approach with the spherical Skyrme-Hartree-Fock model, the correlation between proton radioactivity half-life and macroscopic quantities was analyzed. Moreover, we obtained a new Skyrme parameter set by fitting the two most weighted macroscopic quantities. Compared with Skyrme parameters MSL0 and the theoretical model of proton radioactivity UDLP, the theoretical proton radioactivity half-life calculated by the new Skyrme parameter set can better reproduce the experimental data.</jats:p>

<jats:title>Abstract</jats:title> <jats:p>Based on the single-particle levels and ground state deformations obtained in the axial deformed relativistic mean field theory, a relativistic Weizsäcker mass model is proposed. The density functional of the relativistic mean field theory is chosen as DD-LZ1 which can partially remove the spurious shell closures. Compared with fourth Weizsäcker-Skyrme mass model, the shell correction energies give wide spreading, and the root-mean-square mass deviation turns out to be 1.353 MeV. Further improvement is in progress. </jats:p>