Accepted Manuscripts

In this study, we analyze the influence of Non-Standard Interaction (NSI) on steering in three-flavor neutrino oscillations, with a focus on the NO$\nu$A and DUNE experimental setups. DUNE, having a longer baseline, exhibits a more pronounced deviation towards NSI in steering compared to NO$\nu$A. Within the energy range where DUNE's maximum flux appears, the steering value for DUNE shows a $21\%$ deviation from the Standard Model (SM) to NSI for normal ordering (NO), while for inverted ordering (IO), the steering value increases by approximately $15\%$ relative to the SM. We conduct a comparative analysis of nonlocality, steering, and entanglement. Additionally, we express steering in terms of three-flavor neutrino oscillation probabilities and explore the relationship between steering inequality and concurrence.

It is well known that the coupling of the axion-like particle with the photon modifies Maxwell equations. One of the main consequences of these modifications is the conversion of axions into photons. Little has been said about other possible effects. In this note, we show that the trajectory of an electron can be significantly altered because of the emergence of an electric field by the axion-like particles dark matter background in this modified axion-electrodynamics. Different dark matter densities and magnetic field strengths are considered and it is shown that an axion-like particle with a mass m_a∼10^-22eV generates an electric field that can change the trajectory of an electron significantly in these scenarios.

We investigate the chiral phase diagram in the NJL model with a modified coupling strength. Moreover, we delve deeply into the fluctuations of baryon numbers. A temperature damping factor for the coupling strength is introduced to mimic the temperature dependence of QCD in the low and middle temperature ranges. This novel parameter is fitted by using the quark condensate from lattice QCD at finite temperature. Remarkably, the chiral phase diagram is greatly enhanced in the crossover region. The quark condensate is used to ascertain the location of the phase transition, and we find an area where both phases coexist. The chiral susceptibility is employed to identify the pseudo-critical line in the crossover region. The skewness ratios and the kurtosis ratios varying with $T$ at several different $\mu_B$ are calculated meticulously, and the results demonstrate that they experience a significant change around the pseudo-critical line. Additionally, the skewness ratios and the kurtosis ratios along the pseudo-critical line ($T_c(\mu_B)$) and the lines deviating from $T_c(\mu_B)$ are computed to gain a better understanding of the experimental results. This implies that the freeze-out line is relatively far from the critical end point.

Using the \textit{ab initio} symmetry-adapted no-core shell model, we compute sum rules and response functions for light to medium-mass nuclei, starting from interactions that are derived in the chiral effective field theory. Specifically, we investigate electromagnetic transitions of monopole, dipole and quadrupole nature for $^4$He, and explore dominant features of giant monopole resonances in symmetric nuclei such as the closed-shell $^4$He and $^{16}$O light nuclei, the intermediate-mass open-shell $^{20}$Ne and the medium-mass closed-shell $^{40}$Ca. Furthermore, for the NNLO$_{\rm opt}$ chiral potential, we determine parameter-free monopole sum rules,
which can provide information on the incompressibility of symmetric nuclear matter. 
We report $213(10)$ MeV as an estimate for the compression modulus for infinite nuclear matter, which overlaps with the lower range of values often used in current astrophysical applications.

We investigate the relative yields of various like and unlike mass hadrons in ultra-relativistic heavy-ion collisions (URHIC). In the framework of thermal model a strong evidence of strangeness imbalance is observed in the experiments at lower collision energies relative to non-strange particles, particularly pions. The study indicates that like mass particle ratios in the system at the chemical freeze-out in URHIC can be described effectively by considering baryons (antibaryons) as point like as well as finite size particles which imitates hard-core repulsive interactions leading to an excluded volume type effect. In this analysis, we employ the statistical Hadron Resonance Gas (HRG) model for both cases. A comparison between the two cases is provided. However, the importance of considering baryons (antibaryons) as finite size particles is revealed in the description of baryon to meson ratios. Best fits to particle ratios are obtained using $\chi^{2}$-minimization procedure. For the case of finite-size baryons (antibaryons), we find that considering their hard-core radii allows us to fit the available antibaryon-to-baryon and baryon (antibaryon)-to-pion ratio experimental data simultaneously quite well with the same model parameter values. Moreover, our results align well with the proton radius puzzle observed in the muonic hydrogen measurement data. Furthermore, the study reveals two distinct chemical freeze-out stages in both cases, where the earlier one corresponds to baryonic (hyperonic) and antibaryonic (antihyperonic) states and a later one to mesonic degrees of freedom. A comparison of freeze-out lines obtained from both the cases is made along with the results of some earlier studies.

Form-factor analysis of pseudoscalar π^±- and vector ρ^±-mesons with zero transmitted momentum has been carried out in the model based on the point form of Poincaré-invariant quantum mechanics. The original method of model parameters' calculations from leptonic decaysπ^±→l^±ν_l^± , τ^± →ρ^±ν_τ^± using pseudoscalar density g_π^± constant is proposed. The method is generalized in radiative decays ρ⁰→l⁺l^- and ρ^±→π^±γ with the following anomalous magnetic moments calculation of constituent u- and d-quarks. It has been shown that the obtained parameters lead to the values of magnetic and quadrupole moment of ρ^±-meson which are comparable with other models as well as hadronic transition ρ^±→π^±π⁰ observables. A comparative analysis of the obtained values of μ_u and μ_d quark magnetic moments has been carried out. It has been found that the proposed model gives numerical evaluations which are comparable to other approaches and models.

Secondary electron emission SEE model for 0.1-10 keV X-Ray induced photoelectric emission PE from semiconductors and insulators SI was developed here. From the SEE model for X-Ray induced PE from SI developed here, theories of thermal emission and the characteristics of electron induced SEE and X-Ray induced PE, the methods of obtaining BPE, the mean escape depth of 0.1-10 keV X-Ray induced true secondary electrons λPE from SI and ɛPE were presented, respectively; BPE denotes the mean probability that an internal true secondary electron, which is excited by X-Ray, escapes into vacuum upon reaching emission surface of SI; ɛPE denotes the average energy required to produce a true secondary electron in SI by X-Ray. Based on parameters of vacuum evaporated alkali halides, existing theories of propagate of secondary electrons from SI and theories developed here, the universal formula for λPE of vacuum evaporated alkali halides in photon energy range of 0.1-10 keV was obtained, and the methods of calculating the spectra of X-Ray induced true secondary electrons, X-Ray attenuation cross sections and X-Ray penetration depth were presented, respectively. 
Index terms: X-Ray, photoelectric emission from semiconductors and insulators, X-Ray attenuation cross sections, X-Ray penetration depth, secondary electron emission.

Maximizing the discovery potential of increasingly precise neutrino experiments will require an improved theoretical understanding of neutrino-nucleus cross sections over a wide range of energies. Low-energy interactions are needed to reconstruct the energies of astrophysical neutrinos from supernovae bursts and search for new physics using increasingly precise measurement of coherent elastic neutrino scattering. Higher-energy interactions involve a variety of reaction mechanisms including quasi-elastic scattering, resonance production, and deep inelastic scattering that must all be included to reliably predict cross sections for energies relevant to DUNE and other accelerator neutrino experiments. Refined nuclear interaction models in these energy regimes will also be valuable for other applications, such as measurements of reactor, solar, and atmospheric neutrinos. This manuscript discusses the theoretical status, challenges, required resources, and path forward for achieving precise predictions of neutrino-nucleus scattering and emphasizes the need for a coordinated theoretical effort involved lattice QCD, nuclear effective theories, phenomenological models of the transition region, and event generators.

Nuclear power reactors are the most intense man-made source of antineutrino's and have long been recognized as promising sources for coherent elastic neutrino-nucleus scattering (CE$\nu$NS) studies. Its observation and the spectral shape of the associated recoil spectrum is sensitive to a variety of exotic new physics scenarios and many experimental efforts are underway. Within the context of the reactor antineutrino anomaly, which initially indicated eV-scale sterile neutrino's, the modeling of the reactor antineutrino spectrum has seen a significant evolution in the last decade. Even so, uncertainties remain due to a variety of nuclear structure effects, incomplete information in nuclear databases and fission dynamics complexities. Here, we investigate the effects of these uncertainties on one's ability to accurately distinguish new physics signals. For the scenarios discussed here, we find that reactor spectral uncertainties are similar in magnitude to the projected sensitivities pointing towards a need for $\beta$ spectroscopy measurements below the inverse $\beta$ decay threshold.

We perform an extensive survey of rare and exclusive few-body decays ---defined as those with branching fractions $\mathcal{B} \lesssim 10^{-5}$ and two or three final particles--- of the Higgs, Z, W bosons, and the top quark. Such rare decays can probe physics beyond the Standard Model (BSM), constitute a background for exotic decays into new BSM particles, and provide precise information on quantum chromodynamics factorization with small nonperturbative corrections. We tabulate the theoretical $\mathcal{B}$ values for almost 200 rare decay channels of the four heaviest elementary particles, indicating the current experimental limits in their observation. Among those, we have computed for the first time ultrarare Higgs boson decays into photons and/or neutrinos, H and Z radiative decays into leptonium states, radiative H and Z quark-flavour-changing decays, and semiexclusive top-quark decays into a quark plus a meson, while updating predictions for a few other rare H, Z, and top quark partial widths. The feasibility of measuring each of these unobserved decays is estimated for p-p collisions at the high-luminosity Large Hadron Collider (HL-LHC), and for $e^+e^-$ and p-p collisions at the future circular collider (FCC).