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we study cosmological structure formation with ultralight axion dark matter, or "fuzzy dark matter" (fdm), using a particle-mesh scheme to account for the quantum pressure arising in the madelung formulation of the schrödinger-poisson equations. subpercent-level energy conservation and correct linear behavior are demon... | cosmological particle-in-cell simulations with ultralight axion dark matter |
light sterile neutrinos with a mass of ∼1 ev continue to be interesting due to multiple hints from terrestrial experiments. this simple hypothesis suffers from strong astrophysical constraints, in particular from the early universe as well as solar neutrinos. we develop a cosmologically viable proposal consistent with ... | sterile neutrino shape shifting caused by dark matter |
atomic dark matter is a simple but highly theoretically motivated possibility for an interacting dark sector that could constitute some or all of dark matter. we perform a comprehensive study of precision cosmological observables on minimal atomic dark matter, exploring for the first time the full parameter space of da... | precision cosmological constraints on atomic dark matter |
despite the fact that a rigid {{λ }}-term is a fundamental building block of the concordance λcdm model, we show that a large class of cosmological scenarios with dynamical vacuum energy density {ρ }{{λ }} together with a dynamical gravitational coupling g or a possible non-conservation of matter, are capable of seriou... | first evidence of running cosmic vacuum: challenging the concordance model |
dark photons can be the ultralight dark matter candidate, interacting with standard model particles via kinetic mixing. we propose to search for ultralight dark photon dark matter (dpdm) through the local absorption at different radio telescopes. the local dpdm can induce harmonic oscillations of electrons inside the a... | direct detection of dark photon dark matter using radio telescopes |
the large hadron collider (lhc) has confirmed the higgs mechanism to be responsible for generating mass in the standard model (sm), making it attractive to also consider spontaneous symmetry breaking as the origin of mass for new particles in a dark sector extension of the sm. such a dark higgs mechanism may in particu... | dark higgs bosons at colliders |
we investigate the internal structure of elliptical galaxies at z ~ 0.2 from a joint lensing-dynamics analysis. we model hubble space telescope images of a sample of 23 galaxy-galaxy lenses selected from the sloan lens acs (slacs) survey. whereas the original slacs analysis estimated the logarithmic slopes by combining... | dark matter haloes of massive elliptical galaxies at z ∼ 0.2 are well described by the navarro-frenk-white profile |
we demonstrate that the recent measurement of the anomalous magnetic moment of the muon and dark matter can be simultaneously explained within the minimal supersymmetric standard model. dark matter is a mostly bino state, with the relic abundance obtained via coannihilations with either the sleptons or wino. the most i... | muon g -2 and coannihilating dark matter in the minimal supersymmetric standard model |
recent theoretical studies have suggested that the suddenly recoiled atom struck by dark matter (dm) particle is much more likely to excite or lose its electrons than expected. such migdal effect opens a new avenue for exploring the sub-gev dm particles. there have been various attempts to describe the migdal effect in... | describing the migdal effect with a bremsstrahlung-like process and many-body effects |
experimental hints for lepton-flavor universality violation in the muon's magnetic moment as well as neutral- and charged-current b-meson decays require standard-model extensions by particles such as leptoquarks that generically lead to unacceptably fast rates of charged lepton flavor violation and proton decay. we pro... | explaining lepton-flavor non-universality and self-interacting dark matter with lμ-lτ |
we consider a phenomenological model of dark matter with an equation-of-state $w$ that is negative and changing at late times. we show this couples the $h_{0}$ and $s_{8}$ tensions, alleviating them both simultaneously, while also providing an explanation for the anomalously large integrated sachs-wolfe (isw) effect fr... | a dark matter solution to the $h_{0}$ and $s_{8}$ tensions, and the integrated sachs-wolfe void anomaly |
in this work, we analyze the thermodynamic properties of non-interacting particles under influence of the gravitational field of a traversable wormhole. in particular, we investigate how the thermodynamic quantities are affected by the ellis wormhole geometry, considering three different regions to our study: asymptoti... | thermodynamical properties of an ideal gas in a traversable wormhole |
we describe current and future hadron collider limits on new vector-like leptons with exotic decays. we consider the possibility that, besides standard decays, the new leptons can also decay into a standard model charged lepton and a stable particle like a dark photon. to increase their applicability, our results are g... | new leptons with exotic decays: collider limits and dark matter complementarity |
simplified models of light new physics provide a convenient benchmark for experimental searches for new physics signatures, including dark matter (dm). however, additional detection modes can arise in less simplified and more realistic scenarios where new degrees of freedom are invoked. in this study, we introduce a no... | indirect detection of long-lived particles in a rich dark sector with a dark vector portal |
a search for interactions from solar b 8 neutrinos elastically scattering off xenon nuclei using pandax-4t commissioning data is reported. the energy threshold of this search is further lowered compared with the previous search for dark matter, with various techniques utilized to suppress the background that emerges fr... | search for solar b 8 neutrinos in the pandax-4t experiment using neutrino-nucleus coherent scattering |
inelastic dark matter (idm) is an interesting thermal dm scenario that can pose challenges for conventional detection methods. however, recent studies demonstrated that idm coupled to a photon by electric or magnetic dipole moments can be effectively constrained by intensity frontier experiments using the displaced sin... | looking forward to inelastic dm with electromagnetic form factors at faser and beam dump experiments |
we investigate the correction to the potential that gives rise to the bound orbits and radiation from non-spinning inspiralling binary black holes in a dark matter environment consisting of axion-like particles and dark photons using the techniques of worldline effective field theory. we compute the conservative dynami... | worldline effective field theory of inspiralling black hole binaries in presence of dark photon and axionic dark matter |
the 3.5 kev line is a purported emission line observed in galaxies, galaxy clusters, and the milky way whose origin is inconsistent with known atomic transitions and has previously been suggested to arise from dark matter decay. we systematically re-examine the bulk of the evidence for the 3.5 kev line, attempting to r... | was there a 3.5 kev line? |
a search is presented for charged, long-lived supersymmetric particles in final states with one or more disappearing tracks. the search is based on data from proton-proton collisions at a center-of-mass energy of 13 tev collected with the cms detector at the cern lhc between 2016 and 2018, corresponding to an integrate... | search for supersymmetry in final states with disappearing tracks in proton-proton collisions at $\\sqrt{s}$ = 13 tev |
the power spectrum and bispectrum of dark matter tracers are key and complementary probes of the universe. next-generation surveys will deliver good measurements of the bispectrum, opening the door to improved cosmological constraints and the breaking of parameter degeneracies, from the combination of the power spectru... | multi-tracer power spectra and bispectra: formalism |
we provide a formulation of potential nonrelativistic quantum chromodynamics (pnrqcd) suitable for calculating binding energies and matrix elements of generic hadron and multihadron states made of heavy quarks in s u (nc) gauge theory using quantum monte carlo techniques. we compute masses of quarkonium and triply heav... | baryons, multihadron systems, and composite dark matter in nonrelativistic qcd |
it is shown that the solution for b -l gauge symmetry with b -l =-4 ,-4 ,+5 assigned for three right-handed neutrinos, respectively, reveals a novel scotogenic mechanism with implied matter parity for neutrino mass generation and dark matter stability. additionally, the world with two-component dark matter is hinted. | interpreting dark matter solution for b -l gauge symmetry |
neutrinos are among the most mysterious particles in nature. their mass hierarchy and oscillations, as well as their antiparticle properties, are being intensively studied in experiments around the world. moreover, in many models of physics beyond the standard model, the baryon asymmetry or the dark matter density in t... | heavy neutrinos at future linear e+e− colliders |
expanding the mass range and techniques by which we search for dark matter is an important part of the worldwide particle physics program. accelerator-based searches for dark matter and dark sector particles are a uniquely compelling part of this program as a way to both create and detect dark matter in the laboratory ... | darkquest: a dark sector upgrade to spinquest at the 120 gev fermilab main injector |
the neutron lifetime anomaly has been used to motivate the introduction of new physics with hidden-sector particles coupled to baryon number, and on which neutron stars provide powerful constraints. although the neutron lifetime anomaly may eventually prove to be of mundane origin, we use it as motivation for a broader... | neutron stars with baryon number violation, probing dark sectors |
we propose a new strategy to search for dark matter axions in the mass range of 40--400 $\mu$ev by introducing dielectric haloscopes, which consist of dielectric disks placed in a magnetic field. the changing dielectric media cause discontinuities in the axion-induced electric field, leading to the generation of propag... | dielectric haloscopes: a new way to detect axion dark matter |
the claimed detection of a diffuse galaxy lacking dark matter represents a possible challenge to our understanding of the properties of these galaxies and galaxy formation in general. the galaxy, already identified in photographic plates taken in the summer of 1976 at the uk 48-in schmidt telescope, presents normal dis... | a distance of 13 mpc resolves the claimed anomalies of the galaxy lacking dark matter |
visible signals from the decays of light long-lived hidden sector particles have been extensively searched for at beam dump, fixed-target, and collider experiments. if such hidden sectors couple to the standard model through mediators heavier than ∼10 gev , their production at low-energy accelerators is kinematically s... | inelastic dark matter at the lhc lifetime frontier: atlas, cms, lhcb, codex-b, faser, and mathusla |
using the global 21-cm signal measurement by the edges collaboration, we derive constraints on the fraction of the dark matter that is in the form of primordial black holes (pbhs) with masses in the range 1015-1017 g. improving upon previous analyses, we consider the effect of the x-ray heating of the intergalactic med... | constraining primordial black holes as dark matter using the global 21-cm signal with x-ray heating and excess radio background |
primordial black holes (pbhs) could explain some fraction of dark matter and shed light on many areas of early-universe physics. despite over half a century of research interest, a pbh population has so far eluded detection. the most competitive constraints on the fraction of dark matter comprised of pbhs ($f_{\rm dm}$... | astrometric microlensing by primordial black holes with the roman space telescope |
in symmetric teleparallel geometry the curvature and torsion tensors are assumed to vanish identically, while the dynamics of gravity is encoded by nonmetricity. here the spatially homogeneous and isotropic connections that can accompany flat friedmann-lemaitre-robertson-walker metric come in three sets. as the trivial... | stability of symmetric teleparallel scalar-tensor cosmologies with alternative connections |
the production of dark matter in association with higgs bosons is predicted in several extensions of the standard model. an exploration of such scenarios is presented, considering final states with missing transverse momentum and $b$-tagged jets consistent with a higgs boson. the analysis uses proton-proton collision d... | search for dark matter produced in association with a standard model higgs boson decaying into $b$-quarks using the full run 2 dataset from the atlas detector |
we present a search for dark matter particles with sub-gev /c2 masses whose interactions have final state electrons using the darkside-50 experiment's (12 306 ±184 ) kg d low-radioactivity liquid argon exposure. by analyzing the ionization signals, we exclude new parameter space for the dark matter-electron cross secti... | search for dark matter particle interactions with electron final states with darkside-50 |
the minimum testable dark matter (dm) mass for almost all dm signatures in celestial bodies is determined by the rate at which dm evaporates. dm evaporation has previously been calculated assuming a competition between the gravitational potential of the object, and thermal kicks from the celestial-body matter. we point... | evaporation barrier for dark matter in celestial bodies |
we consider the scenario that the effective gravitational lagrangian of a minimally coupled scalar field at large curvatures is described by a rescaled einstein-hilbert gravity, with the ricci scalar being multiplied by a dimensionless parameter α . such lagrangian densities might originate, for example, by a class of ... | rescaled einstein-hilbert gravity from f (r ) gravity: inflation, dark energy, and the swampland criteria |
a novel mechanism of boosting dark matter by cosmic neutrinos is proposed. the new mechanism is so significant that the arriving flux of dark matter in the mass window $1~{\rm kev} \lesssim m_{\rm dm} \lesssim 1~{\rm mev}$ on earth can be enhanced by two to four orders of magnitude compared to one only by cosmic electr... | cosmic-neutrino-boosted dark matter ($\\nu$bdm) |
tam180 is a rare nuclear isomer whose decay has never been observed. its remarkably long lifetime surpasses the half-lives of all other known β and electron capture decays due to the large k-spin differences and small energy differences between the isomeric and lower-energy states. detecting its decay presents a signif... | constraints on the decay of tam180 |
dark matter particles with a mass around 1 ev can decay into near-infrared photons. utilising available public blank sky observations from the nirspec ifu on the james webb space telescope (jwst), we search for a narrow emission line due to decaying dark matter and derive leading constraints in the mass range 0.8-3 ev ... | hunting dark matter lines in the infrared background with the james webb space telescope |
in this paper we explore the topological classes of thermodynamics of a family of black holes. in particular we investigate the influence of distinct fields, including the electric field, non-linear magnetic field, along with the perfect fluid matter background that can mimic dark matter in large distances. in light of... | topological classes of thermodynamics of black holes in perfect fluid dark matter background |
using the updated proton and helium fluxes just released by the ams-02 experiment we reevaluate the secondary astrophysical antiproton to proton ratio and its uncertainties, and compare it with the ratio preliminarly reported by ams-02. we find no unambiguous evidence for a significant excess with respect to expectatio... | ams-02 antiprotons, at last! secondary astrophysical component and immediate implications for dark matter |
we consider mechanisms for producing a significant population of primordial black holes (pbhs) within string inspired single field models of inflation. the production of pbhs requires a large amplification in the power spectrum of curvature perturbations between scales associated with cmb and pbh formation. in principl... | mechanisms for primordial black hole production in string theory |
we use a semi-analytic model for globular cluster (gc) formation built on dark matter merger trees to explore the relative role of formation physics and hierarchical assembly in determining the properties of gc populations. many previous works have argued that the observed linear relation between total gc mass and halo... | the formation and hierarchical assembly of globular cluster populations |
we implement the first blind analysis of cluster abundance data to derive cosmological constraints from the abundance and weak lensing signal of redmapper clusters in the sloan digital sky survey (sdss). we simultaneously fit for cosmological parameters and the richness-mass relation of the clusters. for a flat λ cold ... | methods for cluster cosmology and application to the sdss in preparation for des year 1 release |
we explore the quench dynamics of a binary bose-einstein condensate crossing the miscibility-immiscibility threshold and vice versa, both within and in particular beyond the mean-field approximation. increasing the interspecies repulsion leads to the filamentation of the density of each species, involving shorter waven... | correlation effects in the quench-induced phase separation dynamics of a two species ultracold quantum gas |
the standard paradigm of collisionless cold dark matter is in tension with measurements on large scales. in particular, the best fit values of the hubble rate h 0 and the matter density perturbation σ 8 inferred from the cosmic microwave background seem inconsistent with the results from direct measurements. we show th... | partially acoustic dark matter, interacting dark radiation, and large scale structure |
we describe the many pathways to generate majorana and dirac neutrino mass through generalized dimension-5 operators a la weinberg. the presence of new scalars beyond the standard model higgs doublet implies new possible field contractions, which are required in the case of dirac neutrinos. we also notice that, in the ... | seesaw roadmap to neutrino mass and dark matter |
we investigate the power spectrum of non-cold dark matter (ncdm) produced in a state out of thermal equilibrium. we consider dark matter production from the decay of scalar condensates (inflaton, moduli), the decay of thermalized and non-thermalized particles, and from thermal and non-thermal freeze-in. for each case, ... | how warm are non-thermal relics? lyman-α bounds on out-of-equilibrium dark matter |
the xenon1t collaboration reported an excess of the low-energy electron recoil events between 1 and 7 kev. we explore the possibility to explain such an anomaly by the mev-scale dark matter (dm) heated by the interior of the sun due to the same dm-electron interaction as in the detector. the kinetic energies of heated ... | sun heated mev-scale dark matter and the xenon1t electron recoil excess |
the redshifted 21-cm line of hydrogen holds great potential for the study of cosmology, as it can probe otherwise unobservable cosmic epochs. in particular, measurements of the 21-cm power spectrum during cosmic dawn—the era when the first stars were formed—will provide us with a wealth of information about the astroph... | robust velocity-induced acoustic oscillations at cosmic dawn |
we propose a double inflection points inflationary model in supergravity with a single chiral superfield. such a model allows for the generation of primordial black holes (pbhs) at small scales, which can account for a significant fraction of dark matter. moreover, in vacuum it is possible to give a small and adjustabl... | primordial black hole production in inflationary models of supergravity with a single chiral superfield |
existing searches for cosmic axions relics have relied heavily on the axion being nonrelativistic and making up dark matter. however, light axions can be copiously produced in the early universe and remain relativistic today, thereby constituting a cosmic axion background (c a b ). as prototypical examples of axion sou... | cosmic axion background |
the standard λ cold dark matter cosmological model provides an amazing description of a wide range of astrophysical and astronomical data. however, there are a few big open questions, that make the standard model look like a first-order approximation to a more realistic scenario that still needs to be fully understood.... | cosmology intertwined i: perspectives for the next decade |
we present a study of the clustering and halo occupation distribution of baryon oscillation spectroscopic survey (boss) cmass galaxies in the redshift range 0.43 < z < 0.7 drawn from the final sdss-iii data release. we compare the boss results with the predictions of a halo abundance matching (ham) clustering mod... | the clustering of galaxies in the sdss-iii baryon oscillation spectroscopic survey: modelling the clustering and halo occupation distribution of boss cmass galaxies in the final data release |
in this work, we investigate the degenerate heavy higgs bosons in the next-to-minimal supersymmetric standard model (nmssm) by introducing vector-like particles. such an extension is well motivated from the top-down view since some grand unified theories usually predict the existence of singlet scalars and vector-like ... | probing degenerate heavy higgs bosons in nmssm with vector-like particles |
motivated by the tensions in the hubble constant h0 and the structure growth σ8 between planck results and other low redshift measurements, we discuss some cosmological effects of a dark sector model in which dark matter (dm) interacts with fermionic dark radiation (dr) through a light gauge boson (dark photon). such k... | light dark photon and fermionic dark radiation for the hubble constant and the structure formation |
searches in final states with two leptons plus missing transverse energy, targeting supersymmetric particles or invisible decays of the higgs boson, were performed during run 1 of the lhc. recasting the results of these analyses in the context of the inert doublet model (idm) using madanalysis 5, we show that they prov... | dilepton constraints in the inert doublet model from run 1 of the lhc |
we investigate the continuum spectrum of the su(2) gauge theory with nf=2 flavors of fermions in the fundamental representation. this model provides a minimal template which is ideal for a wide class of standard model extensions featuring novel strong dynamics that range from composite (goldstone) higgs theories to sev... | su(2) gauge theory with two fundamental flavors: a minimal template for model building |
while many tensions between local group (lg) satellite galaxies and λ cold dark matter cosmology have been alleviated through recent cosmological simulations, the spatial distribution of satellites remains an important test of physical models and physical versus numerical disruption in simulations. using the fire-2 cos... | a profile in fire: resolving the radial distributions of satellite galaxies in the local group with simulations |
in the present paper, we use the holographic approach to describe the early-time acceleration and the late-time acceleration eras of our universe in a unified manner. such "holographic unification" is found to have a correspondence with various higher curvature cosmological models with or without matter fields. the cor... | unifying holographic inflation with holographic dark energy: a covariant approach |
we test if the cosmological zoom-in simulations of isolated galaxies from the fire project reproduce the properties of ultra diffuse galaxies (udgs). we show that outflows that dynamically heat galactic stars, together with a passively aging stellar population after imposed quenching, naturally reproduce the observed p... | the origin of ultra diffuse galaxies: stellar feedback and quenching |
we measure redshift-space distortions (rsd) in the two-point correlation function of a sample of $63,163$ spectroscopically identified galaxies with $z < 0.2$, an epoch where there are currently only limited measurements, from the sloan digital sky survey (sdss) data release 7 main galaxy sample. our sample, which w... | the clustering of the sdss main galaxy sample - ii. mock galaxy catalogues and a measurement of the growth of structure from redshift space distortions at z = 0.15 |
we investigate the particle production from thermal gravitational annihilation in the very early universe, which is an important contribution for particles that might not be in thermal equilibrium or/and might only have gravitational interaction, such as dark matter (dm). for particles with spin 0 , 1 / 2 and 1 we calc... | on thermal gravitational contribution to particle production and dark matter |
we present a new mechanism for thermally produced dark matter, based on a semi-annihilation-like process, χ +χ +sm →χ +sm , with intriguing consequences for the properties of dark matter. first, its mass is low, ≲1 gev (but ≳5 kev to avoid structure-formation constraints). second, it is strongly interacting, leading to... | new freezeout mechanism for strongly interacting dark matter |
we study a disordered ensemble of quantum emitters collectively coupled to a lossless cavity mode. the latter is found to modify the localization properties of the "dark" eigenstates, which exhibit a character of being localized on multiple noncontiguous sites. we denote such states as semilocalized and characterize th... | dark state semilocalization of quantum emitters in a cavity |
primordial black holes (pbhs) cannot be produced abundantly enough to be the dark matter in canonical single-field inflation under slow roll. this conclusion is robust to local non-gaussian correlations between long- and short-wavelength curvature modes, which we show have no effect in slow roll on local primordial bla... | primordial black holes and local non-gaussianity in canonical inflation |
layered two-dimensional materials exhibit rich transport and optical phenomena in twisted or lattice-incommensurate heterostructures with spatial variations of interlayer hybridization arising from moiré interference effects. here, we report experimental and theoretical studies of excitons in twisted heterobilayers and... | moiré excitons in mose2-wse2 heterobilayers and heterotrilayers |
searching for axion dark matter, the admx collaboration acquired data from january to october 2018, over the mass range 2.81 - 3.31 μ ev , corresponding to the frequency range 680-790 mhz. using an axion haloscope consisting of a microwave cavity in a strong magnetic field, the admx experiment excluded dine-fischler-sr... | axion dark matter experiment: run 1b analysis details |
we use a set of hydrodynamical and dark matter-only (dmonly) simulations to calibrate the halo mass function (hmf). we explore the impact of baryons, propose an improved parametrization for spherical overdensity masses, and identify differences between our dmonly hmf and previously published hmfs. we use the magneticum... | halo mass function: baryon impact, fitting formulae, and implications for cluster cosmology |
motivated by excess diphoton events reported by atlas and cms, we show that composite pseudoscalars, bound states of heavy fermions under a new confining gauge theory, can be pair-produced by drell-yan production if the constituent particles are electrically charged. the decays of these pion-like bound states into two ... | lhc diphotons from electroweakly pair-produced composite pseudoscalars |
we introduce drake, a numerical precision tool for predicting the dark matter relic abundance also in situations where the standard assumption of kinetic equilibrium during the freeze-out process may not be satisfied. drake comes with a set of three dedicated boltzmann equation solvers that implement, respectively, the... | dark matter relic abundance beyond kinetic equilibrium |
we use observations of gas-rich dwarf galaxies to derive constraints on dark matter scattering with ordinary matter. we require that heating/cooling due to dark matter (dm) interacting with gas in the leo t dwarf galaxy not exceed the ultralow radiative cooling rate of the gas. this enables us to set (i) stronger bound... | gas-rich dwarf galaxies as a new probe of dark matter interactions with ordinary matter |
measurements of weak gravitational lensing at low redshifts (z ≲0.5 - 1 ), quantified by the parameter s8, favor weaker matter clustering than that expected from the standard λ cold dark matter (λ cdm ) cosmological model with the parameters determined by cosmic microwave background (cmb) measurements. however, the amp... | sigma-8 tension is a drag |
dark matter coupled solely gravitationally can be produced through the decay of primordial black holes in the early universe. if the dark matter is lighter than the initial black hole temperature, it could be warm enough to be subject to structure formation constraints. in this paper we perform a more precise determina... | non-cold dark matter from primordial black hole evaporation |
we consider a concise dark matter (dm) scenario in the context of a nonexotic u(1) extension of the standard model (sm), where a new u(1 ) x gauge symmetry is introduced along with three generations of right-handed neutrinos (rhns) and a sm gauge singlet higgs field. the model is a generalization of the minimal gauged ... | z'-portal right-handed neutrino dark matter in the minimal u(1 ) x extended standard model |
we study direct detection in simplified models of dark matter (dm) in which interactions with standard model (sm) fermions are mediated by a heavy vector boson. we consider fully general, gauge-invariant couplings between the sm, the mediator and both scalar and fermion dm. we account for the evolution of the couplings... | you can hide but you have to run: direct detection with vector mediators |
we study production of dark matter (dm) in models with a non-standard expansion history. we consider both freeze-out and freeze-in mechanisms for producing the observed dm abundance in a model where the dm consists of scalar singlet particles coupled to the standard model sector via the higgs portal. we show that a non... | scalar singlet dark matter in non-standard cosmologies |
the qcd axion serves as a well-motivated dark matter candidate and the misalignment mechanism is known to reproduce the observed abundance with a decay constant fa≃ o (1012) gev for a misalignment angle θ mis ≃ o (1). while fa≪ 1012 gev is of great experimental interest, the misalignment mechanism requires the axion to... | axion misalignment driven to the hilltop |
we attribute deviations of the muon and electron magnetic moments from the theoretical predictions to the presence of an additional u(1)' supersymmetric model. we interpret the discrepancies between the muon and electron anomalous magnetic moments to be due to the presence of non-universal u(1)' charges. in a minimally... | electron and muon magnetic moments and implications for dark matter and model characterisation in non-universal u(1)' supersymmetric models |
we develop a framework for computing light dark matter direct detection rates through single phonon and magnon excitations via general effective operators. our work generalizes previous calculations focused on spin-independent interactions involving the total nucleon and electron numbers n (the usual route to excite ph... | effective field theory of dark matter direct detection with collective excitations |
cold dark matter (cdm) could be composed of primordial black holes (pbh) in addition to or instead of more orthodox weakly interacting massive particle dark matter (pdm). we study the formation of the first structures in such λ pbh cosmologies using n -body simulations evolved from deep in the radiation era to redshift... | early structure formation in primordial black hole cosmologies |
the "s8 tension" is a long-standing discrepancy between the cosmic microwave background (cmb) and weak gravitational lensing determination of the amplitude of matter fluctuations, parametrized as s8≡σ8(ωm/0.3 )0.5 , where σ8 is the root-mean-square of matter fluctuations on an 8 h-1 mpc scale, and ωm is the total matte... | linear cosmological constraints on two-body decaying dark matter scenarios and the s8 tension |
we show that the initial misalignment angle of the qcd axion (or axion-like particles) can be set very close to π, if the qcd axion has a mixing with another heavy axion which induces the phase shift ≈ π after inflation. in the simplest case, the heavy axion plays the role of the inflaton, and we call such inflation as... | qcd axion on hilltop by a phase shift of π. |
we use a simulation-based modelling approach to analyse the anisotropic clustering of the boss lowz sample over the radial range $0.4 \, h^{-1} \, \mathrm{mpc}$ to $63 \, h^{-1} \, \mathrm{mpc}$, significantly extending what is possible with a purely analytic modelling framework. our full-scale analysis yields constrai... | five per cent measurements of the growth rate from simulation-based modelling of redshift-space clustering in boss lowz |
we investigate the collective decay dynamics of atoms with a generic multilevel structure (angular momenta f ↔f') coupled to two light modes of different polarization inside a cavity. in contrast to two-level atoms, we find that multilevel atoms can harbor eigenstates that are perfectly dark to cavity decay even within... | emergent dark states from superradiant dynamics in multilevel atoms in a cavity |
in almost all interacting dark energy models present in the literature, the stability of the model becomes potentially sensitive to the dark energy equation-of-state parameter wx , and a singularity arises at wx=-1 . thus, it becomes mandatory to test the stability of the model into two separate regions, namely, for qu... | interacting dark energy with time varying equation of state and the h0 tension |
we report the first results of a search for leptophobic dark matter (dm) from the coherent-captain-mills (ccm) liquid argon (lar) detector. an engineering run with 120 photomultiplier tubes (pmts) and 17.9 ×1020 protons on target (pot) was performed in fall 2019 to study the characteristics of the ccm detector. the ope... | first leptophobic dark matter search from the coherent-captain-mills liquid argon detector |
the rastall gravity is the modified einstein general relativity, in which the energy-momentum conservation law is generalized to t^{μ ν }_{ ~;μ }=λ r^{,ν }. in this work, we derive the kerr-newman-ads (kn-ads) black hole solutions surrounded by the perfect fluid matter in the rastall gravity using the newman-janis meth... | kerr-newman-ads black hole surrounded by perfect fluid matter in rastall gravity |
many existing or proposed intensity-frontier search experiments look for decay signatures of light long-lived particles (llps), highly displaced from the interaction point, in a distant detector that is well-shielded from the standard model background. this approach is, however, limited to new particles with decay leng... | extending the reach of faser, mathusla, and ship towards smaller lifetimes using secondary particle production |
different mechanisms operate in various regions of the mssm parameter space to bring the relic density of the lightest neutralino, tilde{χ }^01, assumed here to be the lightest susy particle (lsp) and thus the dark matter (dm) particle, into the range allowed by astrophysics and cosmology. these mechanisms include coan... | supersymmetric dark matter after lhc run 1 |
a search for the pair production of new light bosons, each decaying into a pair of muons, is performed with the cms experiment at the lhc, using a dataset corresponding to an integrated luminosity of 20.7 fb-1 collected in proton-proton collisions at center-of-mass energy of √{ s} = 8 tev. no excess is observed in the ... | a search for pair production of new light bosons decaying into muons |
we perform an extensive review of the numerous studies and methods used to determine the total mass of the milky way. we group the various studies into seven broad classes according to their modeling approaches. the classes include: i) estimating galactic escape velocity using high velocity objects; ii) measuring the r... | the mass of our milky way |
results from the lhc put severe constraints on models of new physics. this includes constraints on the higgs sector from the precise measurement of the mass and couplings of the 125gev higgs boson, as well as limits from searches for other new particles. we present the procedure to use these constraints in micromegas b... | collider limits on new physics within micromegas4.3 |
new data from the gaia satellite, when combined with accurate photometry from the pan-starrs survey, allow us to accurately estimate the properties of the gd-1 stream. here, we analyse the stellar density variations in the gd-1 stream and show that they cannot be due to known baryonic structures such as giant molecular... | evidence of a population of dark subhaloes from gaia and pan-starrs observations of the gd-1 stream |
we briefly survey several typical cp-conserving two-higgs-doublet models (2hdms) in light of current experiments. first we derive the masses and couplings of the mass eigenstates from the lagrangians. then we analyze the constraints from theory and oblique electroweak parameters. finally, we delineate the status of 2hd... | two-higgs-doublet models in light of current experiments: a brief review |
models with light dark sector and dark matter particles motivate qualitatively new collider searches. here we carry out a comprehensive study of hadrophilic models with u(1 ) b and u(1 ) b -3 lτ gauge bosons coupled to light dark matter. the new mediator particles in these models couple to quarks, but have suppressed c... | hadrophilic dark sectors at the forward physics facility |
we study the z = 0 gas kinematics, morphology and angular momentum content of isolated galaxies in a suite of cosmological zoom-in simulations from the fire project spanning mstar = 106-11 m⊙. gas becomes increasingly rotationally supported with increasing galaxy mass. in the lowest mass galaxies (mstar < 108 m⊙), g... | gas kinematics, morphology and angular momentum in the fire simulations |
we leverage the c p violation in charged b meson decays to generate the observed baryon asymmetry and dark matter at o (10 mev ) temperatures. we realize this in two scenarios: bc+ mesogenesis and b+ mesogenesis. in the first, c p -violating bc± decays to b± mesons are followed by decays to dark and standard model bary... | charged b mesogenesis |
we present rotation curve fits to 175 late-type galaxies from the spitzer photometry and accurate rotation curves database using seven dark matter (dm) halo profiles: pseudo-isothermal, burkert, navarro-frenk-white (nfw), einasto, di cintio et al. (2014, hereafter dc14), cored-nfw, and a new semi-empirical profile name... | a comprehensive catalog of dark matter halo models for sparc galaxies |
in the standard model extended by a single complex scalar boson with a softly broken global u(1) symmetry, a pseudo nambu-goldstone boson becomes a candidate for dark matter. in this paper, we discuss the direct detection of the pseudo nambu-goldstone boson dark matter. since the tree-level amplitude for dark matter-nu... | probing pseudo nambu-goldstone boson dark matter at loop level |
we explore the connection between galaxies and dark matter haloes in the milky way (mw) and quantify the implications on properties of the dark matter particle and the phenomenology of low-mass galaxy formation. this is done through a probabilistic comparison of the luminosity function of mw dwarf satellite galaxies to... | the upper bound on the lowest mass halo |
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