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a search for muon neutrinos originating from dark matter annihilations in the sun is performed using the data recorded by the antares neutrino telescope from 2007 to 2012. in order to obtain the best possible sensitivities to dark matter signals, an optimisation of the event selection criteria is performed taking into ... | limits on dark matter annihilation in the sun using the antares neutrino telescope |
the complex singlet extension of the standard model (cxsm) is the simplest extension that provides scenarios for higgs pair production with different masses. the model has two interesting phases: the dark matter phase, with a standard model-like higgs boson, a new scalar and a dark matter candidate; and the broken phas... | singlet extensions of the standard model at lhc run 2: benchmarks and comparison with the nmssm |
searches for invisible decays of the higgs boson are presented. the data collected with the cms detector at the lhc correspond to integrated luminosities of 5.1, 19.7, and 2.3 inverse femtobarns at centre-of-mass energies of 7, 8, and 13 tev, respectively. the search channels target higgs boson production via gluon fus... | searches for invisible decays of the higgs boson in pp collisions at sqrt(s) = 7, 8, and 13 tev |
we propose a predictive lepton model under a modular $s_4$ symmetry, where the neutrino mass matrix arises from a radiative seesaw at one-loop level. the tree-level mass matrix is forbidden by well-assigned modular weights, which also play an important role in stabilizing dark matter candidate due to a remnant $z_2$ sy... | neutrino mass model with a modular $s_4$ symmetry |
a search is presented for new high-mass resonances decaying into electron or muon pairs. the search uses proton-proton collision data at a centre-of-mass energy of 13 tev collected by the cms experiment at the lhc in 2016, corresponding to an integrated luminosity of 36 fb$^{-1}$. observations are in agreement with sta... | search for high-mass resonances in dilepton final states in proton-proton collisions at $\\sqrt{s}=$ 13 tev |
the european space agency (esa) and roscosmos exomars mission will launch the "rosalind franklin" rover in 2022 for a landing on mars in <uri xlink:href="http://2023.the">2023.the</uri> goals of the mission are to search for signs of past and present life on mars, investigate the water/geochemical environme... | oxia planum: the landing site for the exomars "rosalind franklin" rover mission: geological context and prelanding interpretation |
despite being mostly secluded, dark sector particles may feebly interact with photons via a small mass-dimension 4 millicharge, a mass-dimension 5 magnetic and electric dipole moment, or a mass-dimension 6 anapole moment and charge radius. if sufficiently light, the lhc may produce an intense and collimated beam of the... | flare up dark sectors with em form factors at the lhc forward physics facility |
if dark matter (dm) is a fermion and its interactions with the standard model particles are mediated by pseudoscalar particles, the tree-level amplitude for the dm-nucleon elastic scattering is suppressed by the momentum transfer in the non-relativistic limit. at the loop level, on the other hand, the spin-independent ... | loop corrections to dark matter direct detection in a pseudoscalar mediator dark matter model |
the migdal effect in a dark-matter-nucleus scattering extends the direct search experiments to the sub-gev mass region through electron ionization with sub-kev detection thresholds. in this paper, we derive a rigorous and model-independent "migdal-photoabsorption" relation that links the sub-kev migdal process to photo... | model-independent determination of the migdal effect via photoabsorption |
upcoming weak lensing surveys require a detailed theoretical understanding of the matter power spectrum in order to derive accurate and precise cosmological parameter values. while galaxy formation is known to play an important role, its precise effects are currently unknown. we present a set of 92 matter power spectra... | exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra |
a reliable comparison of different dark matter (dm) searches requires models that satisfy certain consistency requirements like gauge invariance and perturbative unitarity. as a well-motivated example, we study two-mediator dm (2mdm). the model is based on a spontaneously broken u(1)' gauge symmetry and contains a majo... | how to save the wimp: global analysis of a dark matter model with two s-channel mediators |
we interpret the potential observation of the 750 gev diphoton resonance at the lhc in models, in which an s u (2 ) isospin-singlet scalar boson mixes with the standard model (sm) higgs boson through an angle α . allowing the singlet scalar boson to have renormalizable couplings to vectorlike leptons and quarks and int... | higgs precision study of the 750 gev diphoton resonance and the 125 gev standard model higgs boson with higgs-singlet mixing |
we search for nuclear recoil signals of dark matter models with a light mediator in pandax-ii, a direct detection experiment in the china jinping underground laboratory. using data collected in 2016 and 2017 runs, corresponding to a total exposure of 54 ton day, we set upper limits on the zero-momentum dark matter-nucl... | constraining dark matter models with a light mediator at the pandax-ii experiment |
we calculate the exact many-body time dynamics of polaritonic states supported by an optical cavity filled with organic molecules. optical, vibrational, and radiative processes are treated on an equal footing employing the time-dependent variational matrix product states algorithm. we demonstrate signatures of non-mark... | tensor network simulation of non-markovian dynamics in organic polaritons |
we present a novel unifying interpretation of excess event rates observed in several dark matter direct-detection experiments that utilize single-electron threshold semiconductor detectors. despite their different locations, exposures, readout techniques, detector composition, and operating depths, these experiments al... | dark matter interpretation of excesses in multiple direct detection experiments |
hot new early dark energy describes a supercooled, first-order phase transition that takes place at sub-ev temperatures in the dark sector. it lowers the sound horizon, which provides a possible solution to the hubble tension, and, at the same time, it can explain the neutrino masses through the inverse seesaw mechanis... | hot new early dark energy: towards a unified dark sector of neutrinos, dark energy and dark matter |
we discuss the production of radiation and dark matter assuming a time-dependent inflaton decay rate during the reheating period. it is shown that the time dependence of the inflaton decay rate can substantially modify the reheating dynamics. as an illustration, a leading interaction between the inflaton ϕ and the higg... | implications of time-dependent inflaton decay on reheating and dark matter production |
the recent discovery of fast transient events near critical curves of massive galaxy clusters, which are interpreted as highly magnified individual stars in giant arcs due to caustic crossing, opens up the possibility of using such microlensing events to constrain a range of dark matter models such as primordial black ... | understanding caustic crossings in giant arcs: characteristic scales, event rates, and constraints on compact dark matter |
excitons and trions (or exciton polarons) in transition metal dichalcogenides (tmds) are known to decay predominantly through intravalley transitions. electron-hole recombination across different valleys can also play a significant role in the excitonic dynamics, but intervalley transitions are rarely observed in monol... | multipath optical recombination of intervalley dark excitons and trions in monolayer wse2 |
searches for resonances decaying into pairs of jets are performed using proton-proton collision data collected at $\sqrt{s} =$ 13 tev corresponding to an integrated luminosity of up to 36 fb$^{-1}$. a low-mass search, for resonances with masses between 0.6 and 1.6 tev, is performed based on events with dijets reconstru... | search for narrow and broad dijet resonances in proton-proton collisions at $\\sqrt{s}=$ 13 tev and constraints on dark matter mediators and other new particles |
cosine-100 is a direct detection dark matter experiment that aims to test dama/libra's claim of dark matter discovery by searching for a dark-matter-induced annual modulation signal with nai(tl) detectors. we present new constraints on the annual modulation signal from a dataset with a 2.82 yr livetime utilizing an act... | three-year annual modulation search with cosine-100 |
we reanalyze data on the surface densities and vertical distribution of baryonic matter in the solar neighborhood and tabulate the results. we find a local total surface density of m dwarfs of 17.3+/- 2.3 {m}⊙{{pc}}-2, whcih is significantly higher than previous values. our result for the total local surface density of... | stars, gas, and dark matter in the solar neighborhood |
many scenarios of physics beyond the standard model predict new light, weakly coupled degrees of freedom, populated in the early universe and remaining as cosmic relics today. due to their high abundances, these relics can significantly affect the evolution of the universe. for instance, massless relics produce a shift... | cosmological constraints on light but massive relics |
the observed anticorrelation between the central dark matter (dm) densities of the bright milky way (mw) dwarf spheroidal galaxies (dsphs) and their orbital pericentre distances poses a potential signature of self-interacting dark matter (sidm). in this work, we investigate this possibility by analysing the range of si... | constraining velocity-dependent self-interacting dark matter with the milky way's dwarf spheroidal galaxies |
direct searches for dark matter (dm) are continuously improving, probing down to lower and lower dm-nucleon interaction cross sections. for strongly interacting massive particle (simp) dark matter, however, the accessible cross section is bounded from above due to the stopping effect of the atmosphere, earth, and detec... | earth scattering of superheavy dark matter: updated constraints from detectors old and new |
we perform numerical simulations of the merging galaxy cluster 1e 0657-56 (the bullet cluster), including the effects of elastic dark matter scattering. in a similar manner to the stripping of gas by ram pressure, dark matter self-interactions would transfer momentum between the two galaxy-cluster dark matter haloes, c... | what does the bullet cluster tell us about self-interacting dark matter? |
marine dissolved organic matter (dom) is one of the largest reservoirs of reduced carbon on earth. in the dark ocean (>200 m), most of this carbon is refractory dom. this refractory dom, largely produced during microbial mineralization of organic matter, includes humic-like substances generated in situ and detectabl... | turnover time of fluorescent dissolved organic matter in the dark global ocean |
motivated by recent developments in perturbative calculations of the nonlinear evolution of large-scale structure, we present an iterative algorithm to reconstruct the initial conditions in a given volume starting from the dark matter distribution in real space. in our algorithm, objects are first moved back iterativel... | iterative initial condition reconstruction |
we observe a set of three replica luminescent peaks at ∼21.4 mev below the dark exciton, and negative and positive dark trions (or exciton polarons) in monolayer ws e2 . the replica redshift energy matches the energy of the zone-center e''-mode optical phonons. the phonon replicas exhibit a parallel gate dependence and... | valley-selective chiral phonon replicas of dark excitons and trions in monolayer ws e2 |
in this work, we propose minimal realizations for generating dirac neutrino masses in the context of a right-handed abelian gauge extension of the standard model. utilizing only u (1) r symmetry, we address and analyze the possibilities of dirac neutrino mass generation via (a) tree-level seesaw and (b) radiative corre... | minimal dirac neutrino mass models from u(1) r gauge symmetry and left-right asymmetry at colliders |
we complete the calculation of the wino-nucleon scattering cross section up to the next-to-leading order in αs . we assume that the other sparticles are decoupled and wino interacts with the standard model particles via the weak interaction. as a result, the uncertainties coming from the perturbative qcd are significan... | qcd effects on direct detection of wino dark matter |
the emergence of an increasingly strong tension between the hubble rate inferred from early- and late-time observations has reinvigorated interest in nonstandard scenarios, with the aim of reconciling these measurements. one such model involves interactions between dark matter and dark energy. here we consider a specif... | shedding light on dark matter-dark energy interactions |
we perform a complete next-to-leading order calculation of the non-abelian electric field correlator in a su(nc) plasma, which encodes properties of the plasma relevant for heavy particle bound state formation and dissociation, and is different from the correlator for the heavy quark diffusion coefficient. the calculat... | non-abelian electric field correlator at nlo for dark matter relic abundance and quarkonium transport |
axion dark matter experiment ultra-low noise haloscope technology has enabled the successful completion of two science runs (1a and 1b) that looked for dark matter axions in the 2.66-3.1 μev mass range with dine-fischler-srednicki-zhitnisky sensitivity [du et al., phys. rev. lett. 120, 151301 (2018) and braine et al., ... | axion dark matter experiment: detailed design and operations |
the statistical models used to derive the results of experimental analyses are of incredible scientific value and are essential information for analysis preservation and reuse. in this paper, we make the scientific case for systematically publishing the full statistical models and discuss the technical developments tha... | publishing statistical models: getting the most out of particle physics experiments |
the density profiles of dwarf galaxies are a highly varied set. if the dark matter is an ultra-light particle such as axions, then simulations predict a distinctive and unique profile. if the axion mass is large enough to fit the ultra-faint dwarf (ufd) satellites ( $m\gtrapprox {10}^{-21}$ ev), then the models do not ... | ultra-light dark matter is incompatible with the milky way's dwarf satellites |
we present results of the relic axion dark-matter exploratory setup (rades), a detector which is part of the cern axion solar telescope (cast), searching for axion dark matter in the 34.67 μev mass range. a radio frequency cavity consisting of 5 sub-cavities coupled by inductive irises took physics data inside the cast... | first results of the cast-rades haloscope search for axions at 34.67 μev |
the james webb space telescope has detected surprisingly luminous early galaxies that indicate a tension with the λ cold dark matter. motivated by scenarios including axion miniclusters or primordial black holes, we consider power-law modifications of the matter power spectrum. we show that the tension could be resolve... | did jwst observe imprints of axion miniclusters or primordial black holes? |
we revisit the calculation of bosonic dark matter absorption via electronic excitations. working in an effective field theory framework and consistently taking into account in-medium effects, we clarify the relation between dark matter and photon absorption. as is well-known, for vector (dark photon) and pseudoscalar (... | dark matter absorption via electronic excitations |
achieving magnetometers with ultrahigh sensitivity at room temperature is an outstanding problem in physical sciences and engineering. recently developed non-hermitian cavity spintronics offers new possibilities. in this work we predict an exceptional magnetic sensitivity of cavity magnon polaritons with the peculiar p... | exceptional magnetic sensitivity of p t -symmetric cavity magnon polaritons |
taking the planck cosmic microwave background data and the more direct hubble constant measurement data as unaffected by systematic offsets, the values of the hubble constant h0 interpreted within the λ cdm cosmological constant and cold dark matter cosmological model are in ∼3.3 σ tension. we show that the parker vacu... | vacuum phase transition solves the h0 tension |
fornal and grinstein recently proposed that the discrepancy between two different methods of neutron lifetime measurements, the beam and bottle methods, can be explained by a previously unobserved dark matter decay mode, n →x +γ . we perform a search for this decay mode over the allowed range of energies of the monoene... | search for the neutron decay n →x +γ , where x is a dark matter particle |
quantum states of molecular vibrational polaritons, hybrid half-light, half-matter quasi-particles, are studied using ultrafast coherent two-dimensional infrared spectroscopy. valuable physical insights such as existence of hidden dark states and ultrafast interactions between dark states and bright polariton states ar... | two-dimensional infrared spectroscopy of vibrational polaritons |
the second data release from the gaia mission (dr2) provides a comprehensive and unprecedented picture of the motions of astronomical sources in the plane of the sky, extending from the solar neighborhood to the outer reaches of the milky way. i present proper-motion measurements based on gaia dr2 for 17 ultra-faint dw... | gaia proper motions and orbits of the ultra-faint milky way satellites |
galaxies follow a tight radial acceleration relation (rar): the acceleration observed at every radius correlates with that expected from the distribution of baryons. we use the markov chain monte carlo method to fit the mean rar to 175 individual galaxies in the sparc database, marginalizing over stellar mass-to-light ... | fitting the radial acceleration relation to individual sparc galaxies |
values of the hubble constant between the direct measurements from various independent local observations and that inferred from the cosmic microwave background with the λ -cold-dark-matter model are in tension with persistent significance. we propose a late-time inhomogeneous resolution suggesting that a chameleon fie... | chameleon dark energy can resolve the hubble tension |
inelastic dark matter is an interesting scenario for light thermal dark matter which is fully consistent with all cosmological probes as well as direct and indirect dark matter detection. the required mass splitting between dark matter χ1 and its heavier twin χ2 is naturally induced by a dark higgs field which also pro... | long-lived dark higgs and inelastic dark matter at belle ii |
we search for a dark matter signal in 11 years of fermi-lat gamma-ray data from 27 milky way dwarf spheroidal galaxies with spectroscopically measured j-factors. our analysis includes uncertainties in j-factors and background normalisations and compares results from a bayesian and a frequentist perspective. we revisit ... | a global analysis of dark matter signals from 27 dwarf spheroidal galaxies using 11 years of fermi-lat observations |
cosmological inference with large galaxy surveys requires theoretical models that combine precise predictions for large-scale structure with robust and flexible galaxy formation modelling throughout a sufficiently large cosmic volume. here, we introduce the millenniumtng (mtng) project which combines the hydrodynamical... | the millenniumtng project: high-precision predictions for matter clustering and halo statistics |
we present the first cosmological constraint on dark matter scattering with protons in the early universe for the entire range of dark matter masses between 1 kev and 1 tev. this constraint is derived from the planck measurements of the cosmic microwave background (cmb) temperature and polarization anisotropy, and the ... | constraints on scattering of kev-tev dark matter with protons in the early universe |
we investigate the effects of producing dark matter by the hawking evaporation of primordial black holes (pbhs) in scenarios that may have a second well-motivated dark matter production mechanism, such as freeze-out, freeze-in, or gravitational production. we show that the interplay between pbhs and the alternative sou... | effects of primordial black holes on dark matter models |
we explore ways of creating cold kev-scale dark matter by means of decays and scatterings. the main observation is that certain thermal freeze-in processes can lead to a cold dark matter distribution in regions with a small available phase space. in this way the free-streaming length of kev particles can be suppressed ... | cold kev dark matter from decays and scatterings |
we propose that the ultra-diffuse galaxy (udg) population represents a set of satellite galaxies born in ∼1010-1011 m⊙ haloes, similar to field dwarfs, which suffer a dramatic reduction in surface brightness due to tidal stripping and heating. this scenario is observationally motivated by the radial alignment of udgs i... | the formation of ultra-diffuse galaxies in cored dark matter haloes through tidal stripping and heating |
models with spontaneously broken global lepton number can lead to a pseudo-goldstone boson as a long-lived dark matter candidate. here we revisit the case of singlet majoron dark matter and discuss multiple constraints. for masses above mev, this model could lead to a detectable flux of monochromatic mass-eigenstate ne... | neutrino lines from majoron dark matter |
the standard model (sm) production of four top quarks (tt¯tt¯ ) in proton-proton collisions is studied by the cms collaboration. the data sample, collected during the 2016-2018 data taking of the lhc, corresponds to an integrated luminosity of 137fb-1 at a center-of-mass energy of 13tev . the events are required to con... | search for production of four top quarks in final states with same-sign or multiple leptons in proton-proton collisions at √{s }=13 tev |
in a λ cold dark matter (λcdm) cosmology, the baryonic tully-fisher relation (btfr) is expected to show significant intrinsic scatter resulting from the mass-concentration relation of dark matter halos and the baryonic-to-halo mass ratio. we study the btfr using a sample of 118 disk galaxies (spirals and irregulars) wi... | the small scatter of the baryonic tully-fisher relation |
we perform a geometric analysis for the sky map of the icecube tev-pev neutrino excess and test its compatibility with the sky map of decaying dark matter signals in our galaxy. we have found that a galactic decaying dark matter component in general improve the goodness of the fit of our model, although the pure isotro... | geometric compatibility of icecube tev-pev neutrino excess and its galactic dark matter origin |
a promising technology concept for sub-gev dark matter detection is described, in which low-temperature microcalorimeters serve as the sensors and superfluid he 4 serves as the target material. we name this concept "herald," helium roton apparatus for light dark matter. a superfluid helium target has several advantageo... | direct detection of sub-gev dark matter using a superfluid he 4 target |
primordial black holes in the mass range from 10-5 to 109 g might have existed in the early universe. via their evaporation mechanism (completed before big bang nucleosynthesis), they might have released stable particles beyond the standard model. we reconsider the possibility that such particles might constitute the m... | dark matter and dark radiation from evaporating primordial black holes |
given that the lhc experiment has produced strong constraints on the colored supersymmetric particles (sparticles), testing the electroweak supersymmetry (ewsusy) will be the next crucial task at the lhc. on the other hand, the light electroweakinos and sleptons in the ewsusy can also contribute to the dark matter (dm)... | testing electroweak susy for muon g - 2 and dark matter at the lhc and beyond |
we propose a "scotogenic" mechanism relating small neutrino mass and cosmological dark matter. neutrinos are dirac fermions with masses arising only in two-loop order through the sector responsible for dark matter. two triality symmetries ensure both dark matter stability and strict lepton number conservation at higher... | two-loop dirac neutrino mass and wimp dark matter |
the evolution and distribution of the angular momentum of dark matter (dm) halos have been discussed in several studies over the past decades. in particular, the idea arose that angular momentum conservation should allow us to infer the total angular momentum of the entire dm halo from measuring the angular momentum of... | connecting angular momentum and galactic dynamics: the complex interplay between spin, mass, and morphology |
weakly interacting dark matter particles can be pair-produced at colliders and detected through signatures featuring missing energy in association with either qcd/ew radiation or heavy quarks. in order to constrain the mass and the couplings to standard model particles, accurate and precise predictions for production c... | higher-order qcd predictions for dark matter production at the lhc in simplified models with s-channel mediators |
in this work we study a classically scale-invariant extension of the standard model in which the dark matter and electroweak scales are generated through the coleman-weinberg mechanism. the extra s u (3 )x gauge factor gets completely broken by the vacuum expectation values of two scalar triplets. out of the eight resu... | dark matter from a classically scale-invariant s u (3 )x |
in this work we derive simple closed-form expressions for the dynamical friction acting on black holes moving through ultralight (scalar field) dark matter, covering both nonrelativistic and relativistic black hole speeds. our derivation is based on long known scattering amplitudes in black hole spacetimes, it includes... | dynamical friction of black holes in ultralight dark matter |
scalar singlet dark matter is one of the simplest and most predictive realisations of the wimp (weakly-interacting massive particle) idea. although the model is constrained from all directions by the latest experimental data, it still has viable regions of parameter space. another compelling aspect of scalar singlets i... | impact of vacuum stability, perturbativity and xenon1t on global fits of \\mathbb {z}_2 and \\mathbb {z}_3 scalar singlet dark matter |
we show that, despite stringent constraints on the shape of the main part of the cosmic microwave background (cmb) spectrum, there is considerable room for its modification within its rayleigh-jeans (rj) end, ω ≪tcmb. we construct explicit new physics models that give an order one (or larger) increase of photon count i... | room for new physics in the rayleigh-jeans tail of the cosmic microwave background |
directional detection of dark matter particles (dm) in the mev mass range could be accomplished by studying electron recoils in large arrays of parallel carbon nanotubes. in a scattering process with a lattice electron, a dm particle might transfer sufficient energy to eject it from the nanotube surface. an external el... | sub-gev dark matter detection with electron recoils in carbon nanotubes |
chemical equilibrium is a commonly made assumption in the freeze-out calculation of coannihilating dark matter. we explore the possible failure of this assumption and find a new conversion-driven freeze-out mechanism. considering a representative simplified model inspired by supersymmetry with a neutralinolike and sbot... | coannihilation without chemical equilibrium |
we study a generic class of time-evolving vacuum models which can provide a better phenomenological account of the overall cosmological observations as compared to the λ cold dark matter (λcdm). among these models, the running vacuum model (rvm) appears to be the most motivated and favoured one, at a confidence level o... | possible signals of vacuum dynamics in the universe |
the purpose of this article is twofold. first, we highlight a simple connection between the real part of quasinormal modes (qnms) in the eikonal limit and the shadow radius of black holes (bhs) and then explore the effect of dark matter on the qnms of massless scalar field and electromagnetic field perturbations in a b... | quasinormal modes of black holes surrounded by dark matter and their connection with the shadow radius |
the introduction of dark matter-neutrino interactions modifies the cosmic microwave background (cmb) angular power spectrum at all scales, thus affecting the reconstruction of the cosmological parameters. such interactions can lead to a slight increase of the value of h0 and a slight decrease of s8≡σ8√{ωm/0.3 } , which... | reducing the h0 and σ8 tensions with dark matter-neutrino interactions |
dark matter particles with inelastic interactions are ubiquitous in extensions of the standard model, yet remain challenging to fully probe with existing strategies. we propose a series of powerful searches at hadron and lepton colliders that are sensitive to inelastic dark matter dynamics. in representative models fea... | discovering inelastic thermal relic dark matter at colliders |
in a broad class of theories, the relic abundance of dark matter is determined by interactions internal to a thermalized dark sector, with no direct involvement of the standard model (sm). we point out that these theories raise an immediate cosmological question: how was the dark sector initially populated in the early... | chilly dark sectors and asymmetric reheating |
we introduce scannerbit, the statistics and sampling module of the public, open-source global fitting framework gambit. scannerbit provides a standardised interface to different sampling algorithms, enabling the use and comparison of multiple computational methods for inferring profile likelihoods, bayesian posteriors,... | comparison of statistical sampling methods with scannerbit, the gambit scanning module |
we forecast the main cosmological parameter constraints achievable with the core space mission which is dedicated to mapping the polarisation of the cosmic microwave background (cmb). core was recently submitted in response to esa's fifth call for medium-sized mission proposals (m5). here we report the results from our... | exploring cosmic origins with core: cosmological parameters |
we present new limits on exotic kev-scale physics based on 478 kg d of majorana demonstrator commissioning data. constraints at the 90% confidence level are derived on bosonic dark matter (dm) and solar axion couplings, pauli exclusion principle violating (pepv) decay, and electron decay using monoenergetic peak signal... | new limits on bosonic dark matter, solar axions, pauli exclusion principle violation, and electron decay from the majorana demonstrator |
weak gravitational lensing of background galaxies provides a direct probe of the projected matter distribution in and around galaxy clusters. here, we present a self-contained pedagogical review of cluster-galaxy weak lensing, covering a range of topics relevant to its cosmological and astrophysical applications. we be... | cluster-galaxy weak lensing |
we present and apply a method to infer the mass of the milky way (mw) by comparing the dynamics of mw satellites to those of model satellites in the eagle cosmological hydrodynamics simulations. a distribution function (df) for galactic satellites is constructed from eagle using specific angular momentum and specific e... | the mass of the milky way from satellite dynamics |
stringent limits on the interactions between dark matter (dm) and the standard model (sm) can be set by studying how initial-state or final-state particles recoil against missing transverse energy [inlinemediaobject not available: see fulltext.]. in this work, we improve, extend and correct lhc constraints on the inter... | simplified dark matter top-quark interactions at the lhc |
we present the micro-photoluminescence (μpl) and micro-reflectance contrast (μrc) spectroscopy studies on thin films of mose2 with layer thicknesses ranging from a monolayer (1l) up to 5l. the thickness dependent evolution of the ground and excited state excitonic transitions taking place at various points of the brill... | exciton band structure in layered mose2: from a monolayer to the bulk limit |
we identify a new universality class in one-dimensional driven open quantum systems with a dark state. salient features are the persistence of both the microscopic nonequilibrium conditions as well as the quantum coherence of dynamics close to criticality. this provides a nonequilibrium analogue of quantum criticality,... | driven markovian quantum criticality |
we investigate the hypothesis that coulomb-type interactions between dark matter (dm) and baryons explain the anomalously low 21 cm brightness-temperature minimum at redshift z ∼17 that was recently measured by the edges experiment. in particular, we reassess the validity of the scenario where a small fraction of the t... | tighter limits on dark matter explanations of the anomalous edges 21 cm signal |
the production of dark matter particles from confining dark sectors may lead to many novel experimental signatures. depending on the details of the theory, dark quark production in proton-proton collisions could result in semivisible jets of particles: collimated sprays of dark hadrons of which only some are detectable... | autoencoders for semivisible jet detection |
the edges collaboration reported an unexpectedly deep absorption in the radio background at 78 mhz and interpreted the dip as the first detection of a redshifted 21 cm signal from cosmic dawn (cd). we attempt an alternate analysis by adopting a maximally smooth function approach to model the foreground. a joint fit to ... | the redshifted 21 cm signal in the edges low-band spectrum |
we study the information content of the angle-averaged redshift space galaxy bispectrum. the main novelty of our approach is the use of a systematic tree-level perturbation theory model that includes galaxy bias, ir resummation, and also accounts for nonlinear redshift space distortions, binning, and projection effects... | precision analysis of the redshift-space galaxy bispectrum |
many particle physics models for dark matter self-interactions—motivated to address long-standing challenges to the collisionless cold dark matter paradigm—fall within the semiclassical regime, with interaction potentials that are long range compared to the de broglie wavelength for dark matter particles. in this work,... | semiclassical regime for dark matter self-interactions |
aromatic organic compounds, because of their small excitation energies ∼o (few ev ) and scintillating properties, are promising targets for detecting dark matter of mass ∼o (few mev ) . additionally, their planar molecular structures lead to large anisotropies in the electronic wave functions, yielding a significant da... | dark matter daily modulation with anisotropic organic crystals |
we show that axion dark matter may be detectable through narrow radio lines emitted from neutron stars. neutron star magnetospheres host both a strong magnetic field and a plasma frequency that increases towards the neutron star surface. as the axions pass through the magnetosphere, they can resonantly convert into rad... | radio signals from axion dark matter conversion in neutron star magnetospheres |
primordial black holes as dark matter may be generated in single-field models of inflation thanks to the enhancement at small scales of the comoving curvature perturbation. this mechanism requires leaving the slow-roll phase to enter a non-attractor phase during which the inflaton travels across a plateau and its veloc... | primordial black holes from inflation and quantum diffusion |
we propose an inflationary scenario where the inflaton field is non-minimally coupled to spacetime curvature and inflation is driven by a vacuum energy symmetry breaking potential without specifying \emph{a priori} whether the inflaton field is small or large. as we incorporate vacuum energy into our analysis, we furth... | particle production from non-minimal coupling in a symmetry breaking potential transporting vacuum energy |
strong motivation for investing in quantum sensing arises from the need to investigate phenomena that are very weakly coupled to the matter and fields well described by the standard model. these can be related to the problems of dark matter, dark sectors not necessarily related to dark matter (for example sterile neutr... | quantum sensors for high energy physics |
dual-phase xenon detectors, as currently used in direct detection dark matter experiments, have observed elevated rates of background electron events in the low energy region. while this background negatively impacts detector performance in various ways, its origins have only been partially studied. in this paper we re... | investigation of background electron emission in the lux detector |
the strong equivalence principle (sep) distinguishes general relativity (gr) from other viable theories of gravity. the sep demands that the internal dynamics of a self-gravitating system under freefall in an external gravitational field should not depend on the external field strength. we test the sep by investigating... | testing the strong equivalence principle: detection of the external field effect in rotationally supported galaxies |
the milky way (mw) dwarf spheroidal satellite galaxies (dsphs) are particularly intriguing targets to search for gamma rays from weakly interacting massive particle (wimp) dark matter (dm) annihilation or decay. they are nearby, dm-dominated, and lack significant emission from standard astrophysical processes. previous... | legacy analysis of dark matter annihilation from the milky way dwarf spheroidal galaxies with 14 years of fermi-lat data |
we present the first results from a dark matter search using six skipper-ccds in the sensei detector operating at snolab. with an exposure of 534.9 gram-days from well-performing sensors, we select events containing 2 to 10 electron-hole pairs. after aggressively masking images to remove backgrounds, we observe 55 two-... | sensei: first direct-detection results on sub-gev dark matter from sensei at snolab |
recently, belle ii reported the observation of the decay $b\to k m_x$, $m_x$ the missing mass, with the branching ratio much exceeding ${\cal b}(b\to k \nu\bar\nu)$ which is the only standard model (sm) process contributing to this reaction. if confirmed, this might be an indication of new nonsm particles produced in t... | $b\\to k^* m_x$ vs $b\\to k m_x$ as a probe of a scalar-mediator dark matter scenario |
we investigate supermassive black holes (smbh), surrounded by a dark matter (dm) spike, that can be found at the centers of milky way and m87 galaxies and are accompanied by a specific kind of topological defect. the investigation is developed within the framework of bumblebee gravity (bg) with a global monopole (gm). ... | testing bumblebee gravity with global monopoles in a dark matter spike by eht observations from m87 and sgr a |
we consider a concise dark matter scenario in the minimal gauged b -l extension of the standard model (sm), where the global b -l (baryon number minus lepton number) symmetry in the sm is gauged, and three generations of right-handed neutrinos and a b -l higgs field are introduced. associated with the b -l gauge symmet... | zbl ' portal dark matter and lhc run-2 results |
the presence of dark matter around a black hole remarkably affects its spacetime. we consider the effects of dark matter on the shadow of a new solution to the einstein equations that describes a rotating black hole in the background of perfect dark matter fluid, along with its extension to nonzero cosmological constan... | shadow and deflection angle of rotating black holes in perfect fluid dark matter with a cosmological constant |
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