The CDF collaboration recently announced a new measurement result for the W boson mass, and it is in tension with the standard model prediction. In this paper, we explain this anomaly in the vector-like quark (VLQ) $ (X,T,B)_{L,R} $ and leptoquark (LQ) $ (X,T,B)_{L,R} $ extended model. In this model, both the VLQ and LQ have positive corrections to the W boson mass. Moreover, it may be a solution to the $ (X,T,B)_{L,R} $ anomaly because of the chiral enhancements from top, T, and B quarks.

A series of new physics scenarios predict the existence of the extra charged gauge boson $ W' $ , which can induce charged-current (CC) non-standard neutrino interactions (NSIs). The theoretical constraints on the simplified $ W' $ model and further on the CC NSI parameters $ W' $ from partial wave unitarity and $ W' $ decays are considered. The sensitivity of the process $ W' $ to the $ W' $ model at the LHC and high-luminosity (HL) LHC experiments is investigated by estimating the expected constraints on $ W' $ ( $ W' $ or μ) using a Monte-Carlo (MC) simulation. We find that the interference effect plays an important role, and the LHC can strongly constrain $ W' $ . Compared with those at the $ W' $ LHC with $ W' $ , the expected constraints at the $ W' $ LHC with $ W' $ can be strengthened to approximately one order of magnitude.

Magic textures are successful candidates of the correct texture for Majorana neutrinos. In this study, we demonstrate that several types of magic textures of Majorana neutrinos are approximately immanent in the flavor mass matrix of Dirac neutrinos. In addition, the normal mass ordering of Dirac neutrino masses is slightly preferable to inverted mass ordering in the context of magic textures.

Based on a simplified model including a singlet vector-like top quark T with charge |Q|= $ 2/3 $ , we analyze the prospects of observing T via the single T production in the $ 2/3 $ channel with Z decaying to neutrinos at the hadron-hadron colliders. This simplified model only includes two free parameters, the coupling constant $ 2/3 $ and the T quark mass $ 2/3 $ . To investigate the observability of the single T production, we perform a detailed background analysis and detector simulation for the collision energies 14 TeV, 27 TeV, and 100 TeV. We scan the $ 2/3 $ parameter space and show the exclusion and discovery capabilities on the T quark with the highest integrated luminosity designed at these colliders. Moreover, the limits from the narrow-width approximation and electroweak precision observables are considered.

This paper presents the prospects of measuring $\sigma(e^{+} e^{-} \to ZH)\times {\rm Br}(H \to \gamma \gamma)$ in three Z decay channels $\sigma(e^{+} e^{-} \to ZH)\times {\rm Br}(H \to \gamma \gamma)$ using the baseline detector with $\sigma(e^{+} e^{-} \to ZH)\times {\rm Br}(H \to \gamma \gamma)$ GeV at the Circular Electron Positron Collider (CEPC). Simulated Monte Carlo events were generated and scaled to an integrated luminosity of 5.6 ab$^{–1}$ to mimic the data. Extrapolated results to 20 ab$^{–1}$ are also reported. The expected statistical precision of these measurements after combining three channels of Z boson decay was 7.7%. With some preliminary estimation on the systematical uncertainties, the total precision is 7.9%. The performance of the CEPC electro-magnetic calorimeter (ECAL) was studied by smearing the photon energy resolution in simulated events in the $\sigma(e^{+} e^{-} \to ZH)\times {\rm Br}(H \to \gamma \gamma)$ channel. In the present ECAL design, the stochastic term in resolution plays the dominant role in the precision of Higgs measurements in the $\sigma(e^{+} e^{-} \to ZH)\times {\rm Br}(H \to \gamma \gamma)$ channel. The impact of the resolution on the measured precision of $\sigma(e^{+} e^{-} \to ZH)\times {\rm Br}(H \to \gamma \gamma)$ as well as the optimization of the ECAL constant and stochastic terms were studied for further detector design.

Based on BESIII measurements of the reaction $ D_s^+\to \pi^+\pi^0\pi^0 $ , we investigate this process by considering the S-wave pseudoscalar-pseudoscalar interaction within the unitary chiral approach and the contributions from the intermediate resonances $ D_s^+\to \pi^+\pi^0\pi^0 $ and $ D_s^+\to \pi^+\pi^0\pi^0 $ . Our calculation can reasonably reproduce the experimental data, and our results imply that $ D_s^+\to \pi^+\pi^0\pi^0 $ , which is dynamically generated from the S-wave pseudoscalar-pseudoscalar interaction, plays an important role in this process, and the contributions from the intermediate resonances $ D_s^+\to \pi^+\pi^0\pi^0 $ and $ D_s^+\to \pi^+\pi^0\pi^0 $ are also necessary. More precise measurements of this process in future can shed light on the nature of $ D_s^+\to \pi^+\pi^0\pi^0 $ and $ D_s^+\to \pi^+\pi^0\pi^0 $ .

Using the minimal extension of the standard model and considering the charge radius and the anapole moments of a neutrino, we derive analytical expressions for the stellar energy loss rates associated with the production of a neutrino pair $ e^- + \gamma \rightarrow e^- + \nu_e +\overline{\nu_e} $ in hot plasma under three limiting regimes (nondegenerate, intermediate, and degenerate electrons) of the temperature, electron chemical potential, and plasma energy. The obtained results reveal the presence of an extra contribution of approximately $ e^- + \gamma \rightarrow e^- + \nu_e +\overline{\nu_e} $ % based on the considered calculations.

{p=The significance and reverberations of the Russo-Japanese War, the first in which a Western power had been defeated by an Asian nation, is the focus of this chapter. The war is viewed from both geopolitical and racial perspectives, with the ‘Great Game’ between Russia and Britain serving as a backdrop. It was a harbinger of the total wars of the twentieth century to come, the demise of the Russian Empire, and the rise of nationalism around the world., h1=Abstract}

{p=■■■}

{p=Migrants’ squats often inhabit marginal and “out of sight” urban areas, placed at the intersection of institutional neglect and alternative strategies for self-managed living. Yet, at times, migrants’ informal settlements become highly visible places, as they find themselves in the spotlight as symbols of governmental failure and urban decay. This chapter reflects on the hurdles and conundrums of negotiating access as a researcher within such a place. It is based on a number of ethnographic encounters that took place at “Ex-MOI”, a housing squat in Turin’s abandoned Olympic Village that became catalyst of local anxieties, as well as of national xenophobic propaganda. Entering a housing squat – at once a public and a private environment – is by no means obvious. Yet, this scenario offers a fertile perspective to look at some underlying aspects of the ethnographic encounter, such as research subjects’ resistance to the “ethnographic gaze”, cross-gender and cross-racial dynamics within fieldwork, as well as the role of the “unsaid” as a telling social act. Refugees’ refusal to be “domesticated” for academic purposes testifies to their multiple attempts at re-gaining control over the representation of their lives, as well as to the inherent political nature of acts of homemaking., h1=Abstract}