Hypothetical light scalar particles trigger the superradiant instability around spinning black holes (BHs), causing clouds of scalars to grow around the BH. In the presence of sufficiently strong particle self-interactions (characterized by the decay constant $f$), scalars are ejected from BH orbits, …

[Phys. Rev. D 114, 055028] Published Wed Sep 16, 2026

We provide the first investigation of the solar production of symmetrons, a well-motivated class of screened scalar fields with density dependent couplings to the Standard Model, and their subsequent absorption in underground direct detection experiments. We compute the flux of symmetrons produced t…

[Phys. Rev. D 114, 055029] Published Wed Sep 16, 2026

We propose a general framework in which a phase transition is triggered during cosmic inflation by the slow-roll dynamics of a spectator field. The topological defects formed at the transition are inflated outside the horizon, reenter it after inflation, and can subsequently generate characteristic …

[Phys. Rev. D 114, 055008] Published Tue Sep 15, 2026

Large numbers of $J/\psi$ mesons can be resonantly produced at BESIII and STCF at the center-of-mass energy $\sqrt{s}=3.097\mathrm{GeV}$. Such $J/\psi$ mesons may undergo rare decays into an axionlike particle (ALP) $a$ and a dark photon ${\gamma }^{\prime }$ through the dark axion portal. We investigate the exclusion reach of the existing BESII…

[Phys. Rev. D 114, 055027] Published Tue Sep 15, 2026

We come up with a novel search strategy for long-lived doubly charged scalars at future proposed lepton colliders. The doubly charged scalar studied in this work belongs to an $SU(2{)}_L$ complex scalar triplet that accounts for tiny neutrino masses via the type II seesaw mechanism. For scalar masses $\lesssim \mathrm{20\dots }$

[Phys. Rev. D 114, 055022] Published Mon Sep 14, 2026

We investigate the long-standing anomaly in the rare decay $B\to K{\mu }^{+}{\mu }^{-}$ within the left-right inverse seesaw (LRIS) model. Global analyses of the $b\to s{\mu }^{+}{\mu }^{-}$ data consistently indicate a significant negative shift in the vector Wilson coefficient, $\mathrm{\Delta }{C}_9^{\mu }\approx -1$, while the axial coefficient $\mathrm{\Delta }{C}_{10}^{\mu }$ remains consistent…

[Phys. Rev. D 114, 055023] Published Mon Sep 14, 2026

We analyze the prospects for studying scalar nonstandard interactions (SNSI) using the neutrino burst from a galactic supernova (SN). SNSI modifies the resonant flavor conversion and, correspondingly, the neutronization burst signal, and may be identifiable in future multi-tonne-scale experiments, s…

[Phys. Rev. D 114, 055024] Published Mon Sep 14, 2026

Leptogenesis provides an elegant mechanism to explain the observed baryon asymmetry of the Universe (BAU), yet its experimental verification remains challenging due to requirements of either extremely heavy right-handed neutrinos or precisely fine-tuned mass splittings. We present a scenario where a…

[Phys. Rev. D 114, 055025] Published Mon Sep 14, 2026

We study the collider phenomenology of a long-lived scalar particle $S$ that arises from Higgs mixing in a broad class of Standard-Model (SM) extensions. When the mixing angle is sufficiently small, $S$ becomes long-lived, while its pair production via the Higgs portal can remain sizable. We focus on th…

[Phys. Rev. D 114, 055026] Published Mon Sep 14, 2026

We study top-antitop pair production in proton-proton collisions within the Standard Model effective field theory (SMEFT) at dimension six. We focus on the top chromomagnetic operator $C_{tG}$ together with the four-quark operators relevant for unpolarized $t\overline{t}$ production. We analyze the top-quark single-…

[Phys. Rev. D 114, 055019] Published Fri Sep 11, 2026

We revisit the renormalization of models with two U(1) gauge symmetries, in a formulation with noncanonical gauge kinetic terms which is covariant under field reparametrizations among the two gauge bosons. This approach is convenient to study the appearance of kinetic mixing in scale evolution becau…

[Phys. Rev. D 114, 055020] Published Fri Sep 11, 2026

The Standard Model (SM) cannot explain the observed baryon asymmetry of the Universe (BAU), thus driving the need for physics beyond the SM, which can generate the electroweak baryogenesis through a strong first-order electroweak phase transition (SFOPT). We extend the SM with a complex singlet scal…

[Phys. Rev. D 114, 055021] Published Fri Sep 11, 2026

We demonstrate that TeV-scale heavy neutral leptons (HNLs) responsible for inverse-seesaw neutrino mass generation can simultaneously fix the cosmological abundance and decay properties of dark matter (DM). The spontaneous breaking of lepton number gives rise to a pseudo-Nambu-Goldstone boson that s…

[Phys. Rev. D 114, 055017] Published Thu Sep 10, 2026

We study the cosmology and observational probes of majoron dark matter in a high-scale seesaw framework with spontaneously broken lepton number. Right-handed neutrinos naturally generate light neutrino masses and can realize thermal leptogenesis, while the associated majoron is a light pseudo-Nambu-…

[Phys. Rev. D 114, 055018] Published Thu Sep 10, 2026

We explore the discovery potential of heavy neutral leptons (HNLs), motivated by models addressing the origin of neutrino masses, at the proposed high-energy same-sign muon collider known as $\mu \mathrm{TRISTAN}$. The study focuses on two complementary HNL-mediated signatures: (i) the lepton-flavor-violating (LF…

[Phys. Rev. D 114, 055006] Published Wed Sep 09, 2026

We present a UV completion of the Standard Model in which quarks and leptons are unified under color SU(4). A single fermionic representation, the real antisymmetric, provides the building blocks to address the strong $CP$ problem via the Nelson-Barr mechanism, while simultaneously correcting the char…

[Phys. Rev. D 114, 055012] Published Wed Sep 09, 2026

This paper explores a simplified extension of the standard model featuring a neutral fermion quintuplet and a scalar quadruplet, which together generate neutrino masses through tree and loop level mechanisms. The quintuplet fermions decay into standard model gauge bosons via the scalars, producing u…

[Phys. Rev. D 114, 055013] Published Wed Sep 09, 2026

We investigate constraints on large extra dimensions (LED) using the latest results from reactor antineutrino experiments. Specifically, we analyze the full data sets from Daya Bay, RENO, KamLAND, NEOS, and STEREO to derive updated bounds. For the case of one extra dimension, we find constrains on i…

[Phys. Rev. D 114, 055014] Published Wed Sep 09, 2026

In this article, we study loop-induced Higgs decays into gauge bosons within the framework of radiative natural supersymmetry. We reproduce the one-loop MSSM calculations for the Higgs partial decay widths into a Z boson-photon pair, two photons, and two gluons, providing the corresponding analytica…

[Phys. Rev. D 114, 055015] Published Wed Sep 09, 2026

A kinetically mixed dark photon produced in $D^0\to \gamma A^{\prime }$ probes the timelike electromagnetic current at $q^2=m_{A^{\prime }}^2$, where resolved vector-meson structure can render a pointlike continuation from the real photon point inadequate. The magnitudes of the ${\rho }^0$ and $\varphi$ pole residues are normalized to measured radiativ…

[Phys. Rev. D 114, 055016] Published Wed Sep 09, 2026

We study the theoretical constraints on the scalar sector of the alternative left-right model (ALRM), an $E_6$-motivated extension of the Standard Model based on the gauge group $SU(3{)}_c\otimes SU(2{)}_L\otimes SU(2{)}_{R^{\prime }}\otimes U(1{)}_{B-L}$, supplemented by a global $U(1{)}_S$ symmetry. We derive the complete set of tree-level perturbative…

[Phys. Rev. D 114, 055007] Published Tue Sep 08, 2026

$CP4$ $3\mathrm{HDM}$ is a curious version of the three-Higgs-doublet model built upon a $CP$ symmetry of order 4 (dubbed $CP4$). When extended to fermions, $CP4$ leads to unusually tight correlations between the scalar and Yukawa sectors and induces tree-level flavor changing neutral couplings. Still, viable scenario…

[Phys. Rev. D 114, 055009] Published Tue Sep 08, 2026

We provide a study of the parameter space of the complex 2-Higgs doublet model (C2HDM), focusing on signs of large $CP$-violating couplings of the 125 GeV Higgs boson with the fermions. The study is performed utilizing machine learning (ML) techniques developed recently for parameter space exploration…

[Phys. Rev. D 114, 055010] Published Tue Sep 08, 2026

We introduce a Rydberg-based single photon detector (SPD) for probing dark matter in the 0.1–10 meV mass range (20 GHz–2 THz). The Rydberg SPD absorbs photons produced and focused by the BREAD dish antenna and trades them for free, detectable electrons. At the lower end of the mass range, photons dr…

[Phys. Rev. D 114, 055011] Published Tue Sep 08, 2026

This paper studies dark matter in a spontaneously broken hidden U(1). The initial overabundant dark matter density is generated through the freeze-out mechanism. Because the subsequent first order phase transition becomes supercooled, the vacuum transition generates entropy, diluting the DM density to its current value. The MeV–GeV transition also produces nano-Hz gravitational waves potentially detectable by pulsar timing arrays such as NANOGrav.

[Phys. Rev. D 114, 055004] Published Fri Sep 04, 2026

More than one dark sector particle transforming under the same symmetry provides one stable dark matter (DM) component, which undergoes coannihilation with the heavier particle(s) decaying to DM. Specific assumptions on the kinematics and on the coupling parameters may render the heavier component(s…

[Phys. Rev. D 114, 055005] Published Fri Sep 04, 2026

Motivated by the recent anomalies related to $b\to (c,u)l{\overline{\nu }}_l$ decays, we perform a theoretical investigation to search for new physics in ${\mathrm{\Lambda }}_b$ decays through $W^{\prime }$ and scalar LQ model. We have studied ${\mathrm{\Lambda }}_b\to ({\mathrm{\Lambda }}_c,p)\tau {\overline{\nu }}_{\tau }$ decays, which involve a $b\to (c,u)\tau {\overline{\nu }}_{\tau }$ quark level transition. To fix the values of the new coupli…

[Phys. Rev. D 114, 055003] Published Thu Sep 03, 2026

We explore the sensitivity of the Sudbury Neutrino Observatory (SNO) experiment to light dark matter particles $\chi$ with spin-dependent interactions with nucleons. We show that the pair-production of MeV scale dark matter is possible in heavy water (CANDU (Canada Deuterium Uranium)) reactors via $\mathrm{D}(n,\chi \stackrel{\dots }{\chi }$

[Phys. Rev. D 114, 055002] Published Wed Sep 02, 2026

We study the process $e^{+}{e}^{-}\to W^{+}{W}^{-}$ with the aim of estimating the prospects for observing heavy neutrino contributions at future $e^{+}{e}^{-}$-colliders. In this work, we consider two implementations of heavy-light neutrino mixing: a linearized mixing approximation applied in popular models and an exact unitary …

[Phys. Rev. D 114, 055001] Published Tue Sep 01, 2026

Mechanisms of mesogenesis generate the baryon asymmetry and dark matter of the Universe through late-time decays of Standard Model mesons into baryons and dark matter states. Utilizing the $CP$ violation in the meson systems themselves, the resulting baryon asymmetry is directly controlled by collider…

[Phys. Rev. D 114, 035044] Published Mon Aug 31, 2026

In this article, we study the associated production of a singly charged (${\mathrm{\Delta }}^{+}$) scalar along with a $W^{+}$ boson in the newly proposed ${\mu }^{+}{\mu }^{+}$ collider (also known as $\mu \mathrm{TRISTAN}$) at $\sqrt{s}=2\mathrm{TeV}$. Such a singly charged scalar is naturally accommodated in an extremely well-motivated neutrino mass model, namely, the T…

[Phys. Rev. D 114, 035045] Published Mon Aug 31, 2026

The recent measurement of the branching ratio of $B^{+}\to K^{+}+\mathrm{inv}$ (where “inv” denotes invisible states) by the Belle II Collaboration is enhanced relative to the standard model expectation by $2.7\sigma$. An older puzzle persists in measurements of the branching ratios and $CP$ asymmetries of $B\to \pi K$ decays. We addre…

[Phys. Rev. D 114, 035046] Published Mon Aug 31, 2026

Current and future neutrinoless double-beta decay ($0\nu \beta \beta$) searches are usually characterized by half-life limits or projected sensitivities. For operator-level interpretation, however, the relevant question is not only the strength of the limit, but also the stability of the inferred constraints on l…

[Phys. Rev. D 114, 035047] Published Mon Aug 31, 2026

Recent measurements of the charge-parity asymmetry in the decay $D^0\to K_S^0{K}_S^0$ by CMS Collaboration, $A_{CP}(K_S^0{K}_S^0)=(6.2\pm 3.0\pm 0.2\pm 0.8)\%$, and by LHCb, $A_{CP}(D^0\to K_S^0{K}_S^0)=(1.86\pm 1.04\pm 0.41)\%$, suggest possible deviations from Standard Model expectations, which predict asymmetries below the percent level. This singly …

[Phys. Rev. D 114, 035037] Published Fri Aug 28, 2026

We study and explore the low scale implications of Yukawa unification (YU) in the minimal gauge mediated supersymmetry breaking models. We also assume nonzero nonholomorphic terms, with which the YU solutions can be accommodated in the cases with $\mu >0$. These results can be considered a direct effe…

[Phys. Rev. D 114, 035043] Published Fri Aug 28, 2026

We study the dimension-six SMEFT four-lepton operators in the $\mu –\tau$ sector. These operators control both charged-lepton scattering and neutrino self-interactions, the latter being weakly constrained by direct laboratory probes despite their importance for cosmological tensions. We compare three classe…

[Phys. Rev. D 114, 035038] Published Thu Aug 27, 2026

In anticipation of the new wave of ALICE experiments on particle-resonance correlation functions, we study the interaction of a kaon with the $D_{s0}^{*}(2317)$ resonance. Assuming the $D_{s0}^{*}(2317)$ to be a $DK$ molecular state in isospin $I=0$, we employ the fixed center approximation to describe the kaon scatter…

[Phys. Rev. D 114, 035042] Published Thu Aug 27, 2026

We explore the sensitivity of neutrino observatories and direct dark matter detection experiments to boosted sub-GeV dark matter produced by inelastic cosmic ray collisions in the atmosphere. We revisit earlier approaches and extend the sensitivity to higher mass by modeling the proton bremsstrahlun…

[Phys. Rev. D 114, 035041] Published Wed Aug 26, 2026

We develop a general-relativistic framework for two-component quantum dark fermion stars: equilibrium configurations of two degenerate fermion species governed jointly by gravity, a Yukawa-mediated dark fifth force, and a globally relevant Bohm quantum-pressure correction. The treatment retains the …

[Phys. Rev. D 114, 035032] Published Tue Aug 25, 2026

This article revisits the validity of tree-level statements regarding the Yukawa sector of various minimal-renormalizable $SU(5)$ frameworks at the loop level. It is well known that an $SU(5)$ model with only the $45_{\mathrm{H}}$ dimensional irreducible representation (irrep) contributing to the Yukawa sector is hig…

[Phys. Rev. D 114, 035036] Published Tue Aug 25, 2026

Recent years have seen dramatic improvements in the sensitivity of electron-based direct detection experiments. Typically, the sensitivity to dark matter scattering is determined in the light and heavy mediator mass limits. In this paper we show that the light and heavy mediator mass limits are not …

[Phys. Rev. D 114, 035039] Published Tue Aug 25, 2026

We propose that a gravitational wave can be generated during leptogenesis in the early Universe, which occurs during heavy right-handed neutrino decay. Such a gravitational wave, as a remnant of leptogenesis, is shown to be associated with distinguishing signatures that not only act as a powerful pr…

[Phys. Rev. D 114, 035040] Published Tue Aug 25, 2026

Leptophilic dark matter (DM) is a well-motivated thermal weakly interacting massive particle framework that can evade stringent nuclear-recoil searches while remaining testable via DM-induced heating of neutron stars (NSs). In this work, we study leptophilic scalar DM in a $\mathrm{U}(1{)}_{L_{\mu }-L_{\tau }}$ gauge extension …

[Phys. Rev. D 114, 035031] Published Mon Aug 24, 2026

Electroweak triplet Higgs sector extensions are well-motivated scenarios to address lepton flavor observations. These models can also be strongly constrained by combining precise, indirect low-energy measurements with direct searches for exotic, doubly-charged Higgs bosons. Together, these searches …

[Phys. Rev. D 114, 035033] Published Mon Aug 24, 2026

We explore the sensitivity of the upcoming MAGIX experiment at the MESA facility to light Beyond the Standard Model (BSM) mediators in the few to hundred MeV mass range. Utilizing high-intensity electron beams of 55 MeV and 105 MeV on a heavy ${}^{181}\mathrm{Ta}$ target, we investigate the production of scalar, ps…

[Phys. Rev. D 114, 035034] Published Mon Aug 24, 2026

If the Universe underwent a cosmic phase transition, it may have left behind a network of cosmic strings. When these strings arise from the breaking of a gauge symmetry, their decay produces a significant stochastic background of gravitational waves. In contrast, if they originate from the breaking …

[Phys. Rev. D 114, 035035] Published Mon Aug 24, 2026

We construct an $SU(5)$ grand unified theory on domain walls in the five-dimensional space-time. In this setup, we introduce an adjoint scalar field and a singlet that together form a set of five domain-wall solutions, realizing a dynamical brane world. The same scalar fields also localize chiral ferm…

[Phys. Rev. D 114, 035028] Published Fri Aug 21, 2026

We explore a portal vectorlike lepton (pVLL) extension of the Standard Model (SM) and study its implications for Higgs and vector-boson associated production ($hV$, with $V=Z$-boson or dark photon) at a future muon collider facility. We show that while the ${\mu }^{+}{\mu }^{-}\to hZ$ production rate remains close to its SM…

[Phys. Rev. D 114, 035029] Published Fri Aug 21, 2026

In gauge theory on 5D orbifolds the magnitude of chiral anomalies of 4D gauge fields changes with the value of the Aharonov-Bohm (AB) phase ${\theta }_H$ in the fifth dimension. Anomaly flows with the AB phase. In particular in the Randall-Sundrum (RS) warped space gauge couplings of 4D fermions depend on bulk…

[Phys. Rev. D 114, 035026] Published Wed Aug 19, 2026

We perform a complete one-loop renormalization analysis of $CPT$-odd Lorentz-violating scalar quantum chromodynamics with adjoint scalar matter. Working to first order in the preferred background vector and treating the corresponding operators as perturbative insertions, we compute the ultraviolet-div…

[Phys. Rev. D 114, 035027] Published Wed Aug 19, 2026

This work investigates the allowed parameter spaces of a simplified dark matter (DM) model characterized by a spin-0 mediator with masses in the low to intermediate range ($<10\mathrm{GeV}$). We systematically divide the parameter space into various mass regions of the mediator and constrain the model par…

[Phys. Rev. D 114, 035025] Published Tue Aug 18, 2026

Ultralight bosons sourced by macroscopic objects can generate long-range spin-independent and spin-dependent potentials that are accessible to precision interferometry. Such potentials induce phase shifts in Josephson junctions, detectable through precision current measurements. We propose three exp…

[Phys. Rev. D 114, 035023] Published Mon Aug 17, 2026

The optical dump at the LUXE experiment has the potential to create a large flux of $\mathcal{O}(\mathrm{GeV})$ photons that can be used to look for new physics when directed at a solid material dump. The LUXE-NPOD extension of LUXE, which focuses the hard photons onto a slab of tungsten, offers two interaction points (…

[Phys. Rev. D 114, 035021] Published Thu Aug 13, 2026

We propose a novel method to detect axion dark matter based on a topological phenomenon known as the shift current. We make use of the second-order nonlinearity of the shift current by applying a strong oscillating electric field. This field enhances the axion-induced shift current signal and downco…

[Phys. Rev. D 114, 035022] Published Thu Aug 13, 2026

We propose a quantum-enhanced sensing scheme for the detection of wavelike dark matter and high-frequency gravitational waves using two-dimensional ion crystals in a Penning trap. The protocol employs spin-motion squeezed states to improve the signal-to-noise ratio and enable a super-Heisenberg scal…

[Phys. Rev. D 114, 035020] Published Wed Aug 12, 2026

We propose our framework as an effective field theory valid below the cutoff scale $\mathrm{\Lambda }$, in which we explain the tiny scale of neutrino masses by integrating a noninvertible symmetry with the dynamical determination of the cutoff scale. In our model, we introduce three families of ${\mathrm{SU}(2)}_L$ quintet fermio…

[Phys. Rev. D 114, 035018] Published Tue Aug 11, 2026

A broad experimental program is targeting the QCD axion band predicted by single-axion solutions to the strong $CP$ problem. Multiaxion theories provide a well-motivated departure from this canonical picture, since additional states generically modify the mass-photon-coupling relation. We investigate …

[Phys. Rev. D 114, 035019] Published Tue Aug 11, 2026

A starting point in the study of the minimal supersymmetric Standard Model (MSSM) is the vacuum moduli space, which is a highly complicated algebraic variety; it is the image of an affine variety $X\subset {\mathbb{C}}^{49}$ under a symplectic quotient map $\varphi$ to ${\mathbb{C}}^{973}$. Previous work [Y.-H. He et al., The geometry of genera…

[Phys. Rev. D 114, 035013] Published Mon Aug 10, 2026

We investigate the possibility of realizing strong first-order electroweak phase transition (SFOEWPT) in an effective field theory framework where the Standard Model is extended with a complex scalar singlet ($\varphi$) charged under a local $U(1{)}_D$ gauge group. The tree-level scalar potential contains a dime…

[Phys. Rev. D 114, 035014] Published Mon Aug 10, 2026

Multimessenger astroparticle physics provides a new approach to probe new physics beyond the Standard Model. We propose to probe the light dark matter which can interact via the electromagnetic force. To be concrete, we derive the new constraint on the millicharged dark matter from the multimessenge…

[Phys. Rev. D 114, 035015] Published Mon Aug 10, 2026

Minimal electroweak dark matter models are compelling due to their simplicity, though calculations of their freeze-out abundance are complicated by nonperturbative effects due to Sommerfeld enhancement and bound-state formation. It has been shown that all individual multiplet scenarios beyond the do…

[Phys. Rev. D 114, 035016] Published Mon Aug 10, 2026

In strongly interacting massive particle (SIMP) scenarios, dark matter is comprised of stable dark pions whose $3\to 2$ or $4\to 2$ reactions set the dark matter relic abundance. Recent work has shown that shallow two-pion bound states significantly affect the freeze-out, but did not establish whether such st…

[Phys. Rev. D 114, 035017] Published Mon Aug 10, 2026

We study dark matter coupled to the Standard Model via electroweak scale right-handed neutrinos in a type-I seesaw framework. We consider a minimal dark sector containing a fermion $\chi$ and a complex scalar $\varphi$ whose only connection to the Standard Model is through renormalizable Yukawa interactions with…

[Phys. Rev. D 114, 035008] Published Fri Aug 07, 2026

In this paper, we derive the upper bounds on the coupling of axionlike particles (ALPs) with photon as a function of the mass by considering axion-photon conversion in the Crab Nebula. Previous studies have not considered the influence of the magnetic field within the Crab Nebula. The magnetic field…

[Phys. Rev. D 114, 035004] Published Thu Aug 06, 2026

Metastable cosmic strings are a common prediction of grand unified theories and act as a source of a gravitational-wave background (GWB) that can explain the 2023 pulsar timing array (PTA) signal. In this paper, we revisit the GWB signal from metastable strings, emphasizing the need to carefully dis…

[Phys. Rev. D 114, 035010] Published Wed Aug 05, 2026

We propose discussing the modular flavor model and the stabilization of single modulus field in the Jordan frame supergravity with nonminimal scalar-curvature coupling of the form $\mathrm{\Phi }(\tau ,\overline{\tau })R$. Modular invariance, positivity of the scale factor, and positive definiteness of the Kahler metric constrain s…

[Phys. Rev. D 114, 035011] Published Wed Aug 05, 2026

We present a discovery-era strategy for intensity frontier experiments based on “didecay” events, in which feebly interacting particles (FIPs) are produced in pairs and then both decay inside the detector. This signature may exist in broad classes of models with FIPs decaying in the same way as mini…

[Phys. Rev. D 114, 035012] Published Wed Aug 05, 2026

We argue that a detailed analysis of semileptonic decays can test the possibility of a massive neutrino. The key observable, related to the forward–backward asymmetry, is exactly zero for a massless neutrino but becomes nonzero if the neutral lepton is heavy and interacts with Standard Model fields …

[Phys. Rev. D 114, 035005] Published Tue Aug 04, 2026

We explore the electroweak supersymmetry (EWSUSY) scenario within the minimal supersymmetric Standard Model under the generalized minimal supergravity (GmSUGRA) framework, given that the anomalous magnetic moment of the muon may now be consistent with the Standard Model (SM) prediction, we consider …

[Phys. Rev. D 114, 035006] Published Tue Aug 04, 2026

Lepton-flavor-violating (LFV) interactions involving dark matter (DM) particles remain a largely unexplored area. In this study, we systematically investigate LFV DM interactions within the framework of effective field theories by analyzing astrophysical photons and positrons produced from DM annihi…

[Phys. Rev. D 114, 035007] Published Tue Aug 04, 2026

The gauge principle is a cornerstone of particle-physics model building. Nevertheless, many constructions leave certain global $U(1)$ redundancies ungauged. In this work, we take the gauge principle to its logical extreme by promoting all $SU(N)$ symmetries to $U(N)$. We focus on a model based on local $U(\mathrm{\dots }$

[Phys. Rev. D 114, 035009] Published Tue Aug 04, 2026

Breaking a global or local $U(1{)}_{\mathrm{B}-\mathrm{L}}$ symmetry at high scales simultaneously generates Majorana masses for heavy righthanded neutrinos and produces a network of cosmic strings. The evolution and decay of these strings source a stochastic gravitational-wave background that may be probed by current and f…

[Phys. Rev. D 114, 035001] Published Mon Aug 03, 2026

First observation of solar neutrinos through coherent elastic neutrino-nucleus scattering by dark matter (DM) direct detection experiments makes the study of the neutrino fog of the most relevance. This irreducible neutrino background depends on the target material as well as other experimental para…

[Phys. Rev. D 114, 035002] Published Mon Aug 03, 2026

Accurate predictions for dark matter-electron scattering in solids require an all-electron treatment together with a faithful description of dielectric screening beyond simple approximations. In particular, local field effects, arising from microscopic inhomogeneities of the electronic response, can…

[Phys. Rev. D 114, 035003] Published Mon Aug 03, 2026

We discuss the HL-LHC sensitivity to probe new invisible particles including scalars and fermions using semivisible Higgs decays in the $pp\to \mathrm{ZH},Z\to jj({\ell }^{+}{\ell }^{-}),H\to {\ell }^{+}{\ell }^{-}(jj)+{\cancel{\mathrm{E}}}_{\mathrm{T}}$ production mode. The kinematics of these decays allow new particle masses below $m\lesssim 50\mathrm{GeV}$. We carry out our analysis using both a cut…

[Phys. Rev. D 114, 015046] Published Thu Jul 30, 2026

We perform a systematic study of invariant operators in the three-Higgs-doublet model (3HDM). We compute the closed-form multigraded Hilbert series associated with the global symmetry group of the theory. In addition, we construct explicit expressions for the corresponding invariant operators up to …

[Phys. Rev. D 114, 015047] Published Thu Jul 30, 2026

Since dark matter is only known to have gravitational interactions, it may plausibly decay to gravitons on cosmological timescales. Although such a scenario can be easily realized, there are currently no known limits on this possibility based on indirect-detection methods. We propose a new search st…

[Phys. Rev. D 114, 015045] Published Wed Jul 29, 2026

We examine decoherence in neutrino oscillations induced by an ultralight scalar field coupled to neutrinos. The scalar induces time- and position-dependent shifts in the neutrino mass matrix. Neutrinos sample different field configurations throughout an experimental data-taking period, which leads t…

[Phys. Rev. D 114, 015043] Published Tue Jul 28, 2026

The observation of resonant di-Higgs production, which would strongly suggest the existence of a new heavy neutral scalar $H$, has been searched for extensively at the LHC. In the two-Higgs doublet model (2HDM) with $m_H\gg m_h$, where $h$ is the Higgs boson of mass 125 GeV observed at the LHC, we show that a …

[Phys. Rev. D 114, 015044] Published Tue Jul 28, 2026

We introduce classical, relativistic Lagrangians for point-particle analogs to the field theory description of the standard-model extension (SME) for Lorentz violation. Lagrangians of a form alternative to those derived and studied in previous works are in the spotlight. Interestingly, they have wel…

[Phys. Rev. D 114, 015038] Published Mon Jul 27, 2026

The impact of astrophysical uncertainties in direct detection searches can vary significantly across particle dark matter models and detector targets, due to the different velocity and momentum dependencies of the scattering cross section. We address these uncertainties for all operators of the nonr…

[Phys. Rev. D 114, 015039] Published Mon Jul 27, 2026

The scotogenic model defines a framework for radiative neutrino masses and provides a viable dark matter candidate. Since the scotogenic dark matter is leptophilic, indirect searches appear as an especially interesting possibility. Here we discuss a variation of the usual model with a very distinct …

[Phys. Rev. D 114, 015040] Published Mon Jul 27, 2026

We present the first predictive realization, to our knowledge, of vector freeze-in dark matter from a hidden non-Abelian $SU(2)$ gauge sector spontaneously broken by a Higgs triplet to a residual $U(1)$ symmetry with a massless dark photon mediator. A massive dark vector particle-antiparticle pair acqui…

[Phys. Rev. D 114, 015041] Published Mon Jul 27, 2026

Recent anomalies in nuclear transitions observed by the ATOMKI Collaboration suggest the existence of a new boson with a mass of $\sim 17\mathrm{MeV}$. A theoretically consistent interpretation requires a framework that not only matches the kinematics but also reproduces the observed decay rates while satisfying…

[Phys. Rev. D 114, 015042] Published Mon Jul 27, 2026

The simplified template cross section (STXS) program has become the standard interface between Higgs measurements and global fits, but its fixed one-dimensional boundaries are not guaranteed to align with the phase-space directions to which the Standard Model effective field theory (SMEFT) is most s…

[Phys. Rev. D 114, 015037] Published Fri Jul 24, 2026

We investigate the viability of nonthermal leptogenesis in the gauged $U(1{)}_{B-L}$ extension of the Standard Model (BLSM) with an inverse seesaw (ISS) mechanism for neutrino mass generation. In this framework, right-handed neutrinos typically have $\mathcal{O}(1)$ Yukawa couplings, which induce strong washout effect…

[Phys. Rev. D 114, 015035] Published Thu Jul 23, 2026

The decay out states of unstable Standard Model (SM) particles provide a natural, well-defined quantum-information probe of the SM parameter space. We use Higgs boson decays as a test case: After tracing out kinematics, we compute entanglement among final-state spins and colors across all decay chan…

[Phys. Rev. D 114, 015036] Published Thu Jul 23, 2026

Standard calculations of cosmological first-order phase transitions usually assume critical bubbles to nucleate on a homogeneous symmetric vacuum background. However, this assumption can fail in weak transitions, where thermal fluctuations trigger subcritical bubbles before the standard nucleation t…

[Phys. Rev. D 114, 015031] Published Wed Jul 22, 2026

The cosmological evolution of a scalar field is shaped by Hubble damping. Any nongravitational couplings of the scalar with the primordial thermal bath generically contribute additional damping. Although often neglected, such thermal damping could be the dominant dissipative effect on the scalar. We…

[Phys. Rev. D 114, 015032] Published Wed Jul 22, 2026

Observation of baryon number violation (BNV) in laboratory experiments would constitute unambiguous evidence for physics beyond the Standard Model. We propose dedicated searches for apparent BNV in charm-baryon decays, ${\mathrm{\Lambda }}_c^{+}\to M^{+}+$ missing energy ($M=\pi ,K$), where the missing energy stems from a resonance. …

[Phys. Rev. D 114, 015033] Published Wed Jul 22, 2026

In this paper, we have studied the impact of two different formalisms of quantum decoherence in determining the sensitivities of the two future long-baseline experiments DUNE and P2SO. In formalism A, we will assume that the decoherence matrix is defined in a matter mass eigenstate basis which is th…

[Phys. Rev. D 114, 015034] Published Wed Jul 22, 2026

We propose a scale invariant radiative neutrino mass model with custodial symmetry by introducing two real singlet scalars to the scotogenic model. Masses of an inert doublet scalar and right-handed neutrinos are induced by a vacuum expectation value (VEV) of a singlet scalar caused through the Cole…

[Phys. Rev. D 114, 015029] Published Mon Jul 20, 2026

Highly boosted axionlike particles decaying into photon pairs are notoriously hard to detect at the LHC. The collimated decay photons cannot be individually reconstructed using only electromagnetic calorimeter information, making the signal less distinguishable from background. In this paper, we pro…

[Phys. Rev. D 114, 015030] Published Mon Jul 20, 2026

A nonsupersymmetric inverse seesaw model of neutrino mass based on the $A_5^{\prime }$ modular symmetry is presented. This framework provides a combined explanation for neutrino masses, mixing, and the cosmic baryon asymmetry through leptogenesis. Three concrete realizations are constructed, and their phenomeno…

[Phys. Rev. D 114, 015021] Published Fri Jul 17, 2026

We propose a novel test of the unitarity of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix at collider experiments. Our approach exploits the incomplete cancellation between $t$-channel neutrino exchange and $s$-channel gauge-boson contributions that arises in the presence of violation of the …

[Phys. Rev. D 114, 015026] Published Fri Jul 17, 2026

We investigate the phenomenology of a TeV-scale doubly charged scalar from the right-handed sector within the framework of left-right symmetric models. Focusing on its flavor-diagonal couplings to right-handed electrons and muons, we assess probes from both high-energy colliders and low-energy preci…

[Phys. Rev. D 114, 015027] Published Fri Jul 17, 2026

We discuss charm associated production of the pseudoscalar Higgs boson $h^{\prime \prime }$ in the Maximally CP symmetric Model’ (MCPM’). In our analysis we assume $m_{h^{\prime \prime }}=95.4\mathrm{GeV}$, which corresponds to an enhancement observed by the CMS collaboration in the $\gamma \gamma$ channel. As discussed recently, the MCPM’ is consistent w…

[Phys. Rev. D 114, 015028] Published Fri Jul 17, 2026

Ultralight dark matter can behave as a coherent background field and induce time-dependent modifications of Standard Model parameters. We study a scenario in which a real ultralight scalar $\varphi$ couples off-diagonally to down-type quarks, linking ultralight dark sectors to flavor physics. Working within…

[Phys. Rev. D 114, 015022] Published Thu Jul 16, 2026

We propose the nuclear interferometer—a single-photon interferometry experiment based upon the thorium-229 nuclear clock transition—as a novel detector for ultralight dark matter. Thanks to the enhanced sensitivity of this transition to the variation of fundamental constants, we find that possible r…

[Phys. Rev. D 114, 015023] Published Thu Jul 16, 2026

Asymmetric dark matter is a well-motivated approach to explain the apparent coincidence between the relic densities of visible and dark matter, ${\mathrm{\Omega }}_D\simeq 5.4{\mathrm{\Omega }}_b$. A complete explanation requires two components, a relation between the particle masses of the dark and visible matter, and a second relation betwe…

[Phys. Rev. D 114, 015024] Published Thu Jul 16, 2026