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in this work we analyse the ultimate sensitivity of dark matter direct detection experiments, the "neutrino-floor", in the presence of anomalous sources of dark radiation in form of sm or semi-sterile neutrinos. this flux-component is assumed to be produced from dark matter decay. since dark radiation may mimic dark ma... | the neutrino-floor in the presence of dark radation |
the amount of energy released by a nuclear recoil ionizing the atoms of the active volume of detection appears "quenched" compared to an electron of the same kinetic energy. this different behavior in ionization between electrons and nuclei is described by the ionization quenching factor (iqf) and it plays a crucial ro... | measurements of the ionization efficiency of protons in methane |
we experimentally investigate the effect of a magnetic field on photon detection in superconducting single-photon detectors (sspds). at low fields, the effect of a magnetic field is through the direct modification of the quasiparticle density of states of the superconductor, and magnetic field and bias current are inte... | the effect of magnetic field on the intrinsic detection efficiency of superconducting single-photon detectors |
in leptophilic scenarios, dark matter interactions with nuclei, relevant for direct detection experiments and for the capture by celestial objects, could only occur via loop-induced processes. if the mediator is a scalar or pseudo-scalar particle, which only couples to leptons, the dominant contribution to dark matter-... | two-photon exchange in leptophilic dark matter scenarios |
atom gradiometers have emerged as compelling broadband probes of scalar ultralight dark matter (uldm) candidates that oscillate with frequencies between approximately 10-2 hz and 103 hz . uldm signals with frequencies greater than ∼1 hz exceed the expected nyquist frequency of atom gradiometers, and so are affected by ... | super-nyquist ultralight dark matter searches with broadband atom gradiometers |
even if the concerns related to the naturalness of the electroweak scale are repressed, the higgs mass and stability of the electroweak vacuum do not allow arbitrarily large supersymmetry breaking scale, ms, in the minimal models with split or high-scale supersymmetry. we show that ms can be raised to the grand unified... | precision unification and higgsino dark matter in gut scale supersymmetry |
we revisit the parameter space of singlet fermionic cold dark matter model in order to determine the role of the mixing angle between the standard model higgs and a new singlet one. furthermore, we restudy the direct detection constraints with the updated and new experimental data. as an important conclusion, this mode... | analyzing of singlet fermionic dark matter via the updated direct detection data |
it is well-known that dark matter (dm) direct detection experiments and the lhc are complementary, since they probe physical processes occurring at different energy scales. and yet, there are aspects of this complementarity which are still not fully understood, or exploited. for example, what is the impact that the dis... | impact of a xenonnt signal on lhc dijet searches |
the theoretical interpretation of dark matter direct detection experiments is hindered by uncertainties of the microphysics governing the dark matter-nucleon interaction, and of the dark matter density and velocity distribution inside the solar system. these uncertainties are especially relevant when confronting a dete... | halo-independent comparison of direct detection experiments in the effective theory of dark matter-nucleon interactions |
cresst-ii is a direct dark matter experiment that uses scintillating calorimeters to detect wimp-induced nuclear scatter processes. heat and light signals are read out with tungsten transition edge sensors (tess) that are optimized toward their sensitivity to non-thermal phonons. the usage of superconducting thin film ... | quasiparticle diffusion in cresst light detectors |
the inert doublet model is one of the simplest extensions of the standard model, providing a dark matter candidate. it is a two higgs doublet model with a discrete $z_2$ symmetry, that prevents the scalars of the second doublet (inert scalars) from coupling to the standard model fermions and makes the lightest of them ... | inert doublet model signatures at future e+e- colliders |
the possibility of the existence of right-handed neutrinos remains one of the most important open questions in particle physics, as they can help elucidate the problems of neutrino masses, matter-antimatter asymmetry, and dark matter. interest in this topic has been increasing in recent years with the proposal of new e... | right-handed neutrinos: the hunt is on! |
the directional detection of dark matter is sensitive to both recoil energy and the direction of nuclear recoil. it provides a technique whereby the local velocity distribution of dark matter may be measured. in this study, the possibility of discriminating between isotropic and anisotropic distributions is investigate... | discrimination of anisotropy in dark matter velocity distribution with directional detectors |
we study natural supersymmetry in the generalized minimal supergravity (gmsugra). for the parameter space with low energy, electroweak fine-tuning measures less than 50, we are left with only the z -pole, higgs-pole, and higgsino lsp scenarios for dark matter (dm). we perform the focused scans for such parameter space ... | status of natural supersymmetry from the generalized minimal supergravity in light of the current lhc run-2 and lux data |
guided by gauge principles we discuss a predictive and falsifiable uv complete model where the dirac fermion that accounts for the cold dark matter abundance in our universe induces the lepton flavor violation (lfv) decays μ →e γ and μ →e e e as well as μ -e conversion. we explore the interplay between direct dark matt... | lepton flavor violation induced by dark matter |
the dark matter velocity distribution in the solar neighbourhood is an important astrophysical input which enters in the predicted event rate of dark matter direct detection experiments. it has been recently suggested that the local dark matter velocity distribution can be inferred from that of old or metal-poor stars ... | on the correlation between the local dark matter and stellar velocities |
we use cosmological hydrodynamic zoom-in simulations to study early structure formation in two dark matter (dm) cosmologies, the standard cold dark matter (cdm) model, and a thermal warm dm (wdm) model with a particle mass of mχc2 = 3 kev. we focus on dm haloes with virial masses m ∼ 1010 m⊙. we find that the first sta... | global radiation signature from early structure formation |
we develop the phenomenology of scenarios in which a dark matter candidate interacts with a top quark through flavour-changing couplings, employing a simplified dark matter model with an s-channel vector-like mediator. we study in detail the top-charm flavour-changing interaction, by investigating the single top plus l... | signatures of top flavour-changing dark matter |
we reexamine a renormalizable model of a fermionic dark matter with a gauge singlet dirac fermion and a real singlet scalar which can ameliorate the scalar mass hierarchy problem of the standard model (sm). our model setup is the minimal extension of the sm for which a realistic dark matter (dm) candidate is provided a... | singlet fermionic dark matter with veltman conditions |
we report the measurement of muons and muon-induced phosphorescence in dm-ice17, a nai(tl) direct detection dark matter experiment at the south pole. muon interactions in the crystal are identified by their observed pulse shape and large energy depositions. the measured muon rate in dm-ice17 is 2.93 ±0.04 μ /crystal/da... | measurement of muon annual modulation and muon-induced phosphorescence in nai(tl) crystals with dm-ice17 |
direction sensitivity could provide robust evidence for the direct detection of weakly interacting massive particles constituting dark matter. however, the sensitivity of this method remains low due to the radioactive backgrounds. the purpose of this study is to develop a low-background detector as a two-dimensional im... | development of a low- α-emitting μ-pic as a readout device for direction-sensitive dark matter detectors |
we consider a neutrino two higgs doublet model ( νthdm) in which neutrinos obtain naturally small dirac masses from the soft symmetry breaking of a global u(1) xsymmetry. we extended the model so the soft term is generated by the spontaneous breaking of u(1) xby a new scalar field. the symmetry breaking pattern can als... | scalar dark matter search from the extended νthdm |
studies of dark matter models lie at the interface of astrophysics, cosmology, nuclear physics and collider physics. constraining such models entails the capability to compare their predictions to a wide range of observations. in this review, we present the impact of global constraints to a specific class of models, ca... | impact of cosmological and astrophysical constraints on dark matter simplified models |
we study the prospect of dark matter (dm) searches in the monojet channel at future p p colliders with center-of-mass energies of 33, 50, and 100 tev. we consider a class of simplified models in which a vector boson connecting dm particles to quarks is introduced. comparing with studies in the effective field theory, t... | searches for dark matter signals in simplified models at future hadron colliders |
we propose a u (1 )' model inspired by e6, which has an isospin-violation dark matter. with extra an two pairs of vectorlike quarks, we can assign the proper u (1 )' charges for the first two-generation quark doublets and explain why the first two-generation quarks are lighter than the third generation. by choosing a p... | isospin-violating dark matter in a u (1 )' model inspired by e6 |
we report on a first measurement with a sensitive opto-mechanical force sensor designed for the direct detection of coupling of real chameleons to matter. these dark energy candidates could be produced in the sun and stream unimpeded to earth. the kwisp detector installed on the cast axion search experiment at cern loo... | first results on the search for chameleons with the kwisp detector at cast |
we propose to use the defect creation energy loss in commonly used high energy physics solid state detectors as a tool to statistically identify dark matter signal from background. we simulate the energy loss in the process of defect creation using density functional theory and molecular dynamics methods and calculate ... | crystal defects: a portal to dark matter detection |
the asteroseismic modelling of solar-like stars has proved to be valuable in constraining dark matter. in this work, we study for the first time the influence of asymmetric dark matter (adm) in the evolution of a subgiant star (kic 8228742) by direct comparison with observational data. both spectroscopic and seismic da... | on asymmetric dark matter constraints from the asteroseismology of a subgiant star |
the global network of optical magnetometers for exotic physics searches (gnome) conducts an experimental search for certain forms of dark matter based on their spatiotemporal signatures imprinted on a global array of synchronized atomic magnetometers. the experiment described here looks for a gradient coupling of axion... | a machine learning algorithm for direct detection of axion-like particle domain walls |
liquid argon is used as a target material in several current and planned experiments related to dark matter direct searching and neutrino detection. sipm is becoming the standard for scintillator detectors because of its advantages over traditional pmt. in this paper, we developed a single-phase liquid argon detector w... | developing a single-phase liquid argon detector with sipm readout |
we propose a vector dark matter model with an exotic dark su(2) gauge group. two higgs triplets are introduced to spontaneously break the symmetry. all of the dark gauge bosons become massive, and the lightest one is a viable vector dm candidate. its stability is guaranteed by a remaining z2 symmetry. we study the para... | vector dark matter from split su(2) gauge bosons |
we consider the prospects for multiple dark matter direct detection experiments to determine if the interactions of a dark matter candidate are isospin-violating. we focus on theoretically well-motivated examples of isospin-violating dark matter (ivdm), including models in which dark matter interactions with nuclei are... | directly detecting isospin-violating dark matter |
protection from and rejection of backgrounds is a key issue for the edelweiss-iii direct dark matter detection experiment which aims at exploring the 10-9 pb cross-section region for spin-independent wimp-nucleon interaction. the detector is located in the low radioactivity environment of the modane underground laborat... | background investigation in edelweiss-iii |
a degenerate sfermionic particle spectrum can escape constraints from flavor physics, and at the same time evade the limits from the direct searches if the degeneracy extends to the gaugino-higgsino sector. inspired by this, we consider a scenario where all the soft terms have an approximately common mass scale at msus... | indirect searches of the degenerate mssm |
standard model (sm) spin-zero singlets are constrained through their di-bosonic decay channels via an effective coupling induced by a vector-like quark (vlq) loop at the lhc for √{s}=13 tev. these spin-zero resonances are then considered as portals for scalar, vector or fermionic dark matter particle interactions with ... | spin-0± portal induced dark matter |
we discuss an in-situ evaluation of the 85kr, 222rn, and 220rn background in pandax-i, a 120-kg liquid xenon dark matter direct detection experiment. combining with a simulation, their contributions to the low energy electron-recoil background in the dark matter search region are obtained. | krypton and radon background in the pandax-i dark matter experiment |
we investigate a simple setup in which an excess in the di-photon invariant mass distribution around 750 gev, as seen by the atlas and cms collaborations, is originated through a pair of collimated photon pairs. in this framework a scalar state s decays into two light pseudo-goldstone bosons a, each of which subsequent... | re-opening dark matter windows compatible with a diphoton excess |
we describe two natural scenarios in which both dark matter wimps (weakly interacting massive particles) and a variety of supersymmetric partners should be discovered in the foreseeable future. in the first scenario, the wimps are neutralinos, but they are only one component of the dark matter, which is dominantly comp... | two natural scenarios for dark matter particles coexisting with supersymmetry |
in the two-component majorana dark matter model, one dark matter particle can scatter off the target nuclei, and turn into a slightly heavier component. in the framework of a simplified model with a vector boson mediator, both the tree-level and loop-level processes contribute to the signal in direct detection experime... | a search for two-component majorana dark matter in a simplified model using the full exposure data of pandax-ii experiment |
dark matter with mev scale mass is difficult to detect with standard direct search detectors. however, they can be searched for by considering the up-scattering of kinetic energies by cosmic rays. because the dark matter density is higher in the central region of the galaxy, the up-scattered dark matter will arrive at ... | directional direct detection of light dark matter up-scattered by cosmic rays from direction of the galactic center |
in this work, we consider an extension of the standard model (sm) with an inert higgs doublet and a real scalar singlet, in order to address problems around the origin of dark matter (dm). in this model, the lightest among the cp-odd and cp-even neutral inert components plays the role of a dm candidate, where the model... | dark matter in a singlet extended inert higgs doublet model |
assuming for weakly interacting massive particles (wimps) a maxwellian velocity distribution in the galaxy we provide an assessment of the sensitivity of existing dark matter (dm) direct detection (dd) experiments to operators up to dimension 7 of the relativistic effective field theory describing dark matter interacti... | on the sensitivity of present direct detection experiments to wimp-quark and wimp-gluon effective interactions: a systematic assessment and new model-independent approaches |
the paper presents a novel approach to the description of the nonrelativistic weak interaction of a massive neutral particle (lepton) and a nucleus, in which the latter retains its integrity. the cross section of such a process is a sum of the elastic (or coherent) contribution, when the nucleus remains in its original... | coherence in scattering of massive weakly interacting neutral particles of nuclei |
we investigate the possibility of detecting the 3d cross correlation power spectrum of the ly-α forest and hi 21 cm signal from the post reionization epoch. {the cross-correlation signal is directly dependent on the dark matter power spectrum and is sensitive to the 21-cm brightness temperature and ly-α forest biases. ... | on using large scale correlation of the ly-α forest and redshifted 21-cm signal to probe hi distribution during the post reionization era |
the complex scalar dark matter (dm) candidate in the gauged two-higgs-doublet model, stabilized by a peculiar hidden parity (h parity), is studied in detail. we explore the parameter space for the dm candidate by taking into account the most recent dm constraints from various experiments, in particular, the planck reli... | complex scalar dark matter in the gauged two-higgs-doublet model |
cosine-100, a direct detection wimp dark matter search, is using 106 kg of nai(tl) crystals to definitively test the dama collaboration’s claim of wimp discovery. in the context of most standard models of wimp dark matter, the dama result is in conflict with other direct detection experiments. to resolve this tension, ... | current status and projected sensitivity of cosine-100 |
we investigate the presence and importance of dark matter discs in a sample of 24 simulated milky way galaxies in the apostle project, part of the eagle programme of hydrodynamic simulations in λcdm cosmology. it has been suggested that a dark disc in the milky way may boost the dark matter density and modify the veloc... | the low abundance and insignificance of dark discs in simulated milky way galaxies |
for a wide range of models, dark matter can interact with qcd gluons via chromo-rayleigh interactions. we point out that the large hadron collider (lhc), as a gluon machine, provides a superb probe of such interactions. in this paper, we introduce simplified models to uv-complete two effective dark matter chromo-raylei... | chromo-rayleigh interactions of dark matter |
we investigate a model with two real scalar fields that minimally generates exponentially different scales in an analog of the coleman-weinberg mechanism. the classical scale invariance -- the absence of dimensionful parameters in the tree-level action, required in such a scale generation -- can naturally be understood... | dark matter in minimal dimensional transmutation with multicritical-point principle |
the large hadron electron collider (lhec) has been designed to push the field of deep inelastic scattering to the high energy and intensity frontier using an intense electron beam with a proton beam from the high luminosity-large hadron collider. however, lhec is also a great laboratory for new physics. in this work, w... | search for leptophilic dark matter at the lhec |
paleo-detectors are a proposed experimental technique to search for dark matter (dm). in lieu of the conventional approach of operating a tonne-scale real-time detector to search for dm-induced nuclear recoils, paleo-detectors take advantage of small samples of naturally occurring rocks on earth that have been deep und... | new projections for dark matter searches with paleo-detectors |
the high scintillation luminosity of n-type gaas at 10 °k is surprising because (1) with a refractive index of 3.5, escape is inhibited by total internal reflection and (2) narrow-beam experiments at 90 °k report infrared absorption coefficients of several per cm. this paper presents monte carlo calculations showing th... | monte carlo calculations of the extraction of scintillation light from cryogenic n-type gaas |
we consider an extension of the lepto-specific 2hdm with an extra singlet s as a dark matter candidate. taking into account theoretical and experimental constraints, we investigate the possibility to address both the γ-ray excess detected at the galactic centre and the discrepancy between the standard model prediction ... | muon g - 2 and galactic centre γ-ray excess in a scalar extension of the 2hdm type-x |
an electroweak (ew) sector of the minimal supersymmetric standard model (mssm) with masses of a few hundred gev can account for variety of experimental data, assuming the lightest neutralino to be the lightest supersymmetric (susy) particle: the non-observation at the lhc, searches owing to their small production cross... | susy dark matter direct detection prospects based on \\boldsymbol{(g-2)}_{\\boldsymbol{μ}} |
the electrons in graphene for energies close to the dirac point have been found to form strongly interacting fluid. taking this fact into account we have extended previous work on the transport properties of graphene by taking into account possible interactions between the currents and adding the external magnetic fiel... | two interacting current model of holographic dirac fluid in graphene |
if dark matter interacts, even weakly, via non-gravitational forces, simulations predict that it will be preferentially scattered towards the trailing edge of the halo during collisions between galaxy clusters. this will temporarily create a non-symmetric mass profile, with a trailing overdensity along the direction of... | looking for dark matter trails in colliding galaxy clusters |
we present the design and noise performance of a fully cryogenic (t=4 k) high-electron mobility transistor (hemt)-based charge amplifier for readout of sub-kelvin semiconductor radiation detectors. the amplifier is being developed for use in direct detection dark matter searches such as the cryogenic dark matter search... | an hemt-based cryogenic charge amplifier for sub-kelvin semiconductor radiation detectors |
dark matter could be made up of dark photons, massive but very light particles whose interactions with matter resemble those of usual photons but suppressed by a small mixing parameter. we analyze the main approaches to dark photon interactions and how they can be applied to direct detection experiments which test diff... | dark photon searches with atomic transitions |
a bevy of light dark matter direct detection experiments have been proposed, targeting spin-independent dark matter scattering. in order to be exhaustive, non-standard signatures that have been investigated in the wimp window including spin-dependent dark matter scattering also need to be looked into in the light dark ... | spin-dependent light dark matter constraints from mediators |
we study interaction of low mass dark matter within beam dump experiments. in particular we study the dipolar dark matter model which assumes that the dark matter couples to standard model particles via its electric or magnetic dipole moment. we analyse the constraints on this model in the context of a particular beam ... | detecting dipolar dark matter in beam dump experiments |
the simplest higgs-portal dark matter model is studied in the light of dark matter self-interacting effects on the formation of large scale structures. we show the direct detection limits on the resonant and large mass regions. finally, we also compare these limits with those at the lhc and xenon 1t experiments. | higgs-portal scalar dark matter: scattering cross section and observable limits |
we consider a scenario, within the framework of the minimal supersymmetric standard model, in which dark matter is binolike and dark matter-nucleon spin-independent scattering occurs via the exchange of light squarks which exhibit left-right mixing. we show that direct detection experiments such as lux and supercdms wi... | charged mediators in dark matter scattering with nuclei and the strangeness content of nucleons |
we study the effects of dark matter self-interactions on the local dark matter distribution in selected milky way-like galaxies in the eagle hydrodynamical simulations. the simulations were run with two different self-interacting dark matter models, a constant and velocity-dependent self-interaction cross-section. we f... | the local dark matter distribution in self-interacting dark matter halos |
the purpose of this paper is to examine the model dependence of the stringent constraints on the gluino mass obtained from the large hadron collider (lhc) experiments by analyzing the run ii data using specific simplified models based on several ad hoc sparticle spectra which cannot be realized even in the fairly gener... | revisiting the gluino mass limits in the pmssm in the light of the latest lhc data and dark matter constraints |
darkside run since mid 2015 a 50-kg-active-mass dual phase liquid argon time projection chamber (tpc), filled with low radioactivity argon from an underground source and produced world class results for both the low mass (< 20 gev/c2) and high mass ( > 100 gev/c2) direct detection search for dark matter. the next... | direct detection of dark matter with darkside-20k |
we extend and correct a recently proposed maximum-likelihood halo-independent method to analyze unbinned direct dark matter detection data. instead of the recoil energy as independent variable we use the minimum speed a dark matter particle must have to impart a given recoil energy to a nucleus. this has the advantage ... | extended maximum likelihood halo-independent analysis of dark matter direct detection data |
we study a minimal model of pseudo-dirac dark matter, interacting through transition electric and magnetic dipole moments. motivated by the fact that xenon experiments can detect electrons down to ∼kev recoil energies, we consider o (kev ) splittings between the mass eigenstates. we study the production of this dark ma... | explorations of pseudo-dirac dark matter having kev splittings and interacting via transition electric and magnetic dipole moments |
phenomenological studies of flavored dark matter (fdm) models often have to assume a near-diagonal flavor structure in the coupling matrix in order to remain consistent with bounds from flavor violating processes. in this paper we show that for lepton fdm, such a structure can naturally arise from an extra dimensional ... | suppressed flavor violation in lepton flavored dark matter from an extra dimension |
in their recent preprint [arxiv:2002.06937], kurinsky, baxter, kahn, and krnjaic assume an unphysical ionization yield for plasmon excitations in order to claim a possible dark matter signal. their proposed signal is not possible based on known physics, but their proposed detection method warrants further investigation... | comment on a dark matter interpretation of excesses in multiple direct detection experiments [arxiv:2002.06937] |
isospin-violating dark matter (ivdm), which couples differently with protons and neutrons, provides a promising mechanism to ameliorate the tension among recent direct detection experiments. assuming dark matter (dm) is non-interacting bosonic asymmetric ivdm, we investigate how the existence of old neutron stars limit... | old neutron stars as probes of isospin-violating dark matter |
we present two scenarios in the minimal supersymmetric extension of the standard model (mssm) that can lead to an explanation of the excess in the invariant mass distribution of two opposite charged, same flavor leptons, and the corresponding edge at an energy of about 78 gev, recently reported by the cms collaboration... | cms kinematic edge from sbottoms |
we consider monojet searches at the large hadron collider (lhc) for spin-1 dark matter that interacts with quarks through a contact operator. if the dark matter particles are produced with longitudinal polarizations, then the production matrix element is enhanced by factors of the energy. we show that this particularly... | vector dark matter at the lhc |
the direct detection of dark matter is a key problem in astroparticle physics that generally requires the use of deep-underground laboratories for a low-background environment where the rare signals from dark matter interactions can be observed. this work reports on the stawell underground physics laboratory - currentl... | sabre and the stawell underground physics laboratory dark matter research at the australian national university |
in this paper, as the third part of the third step of our study on developing data analysis procedures for using 3-dimensional information offered by directional direct dark matter detection experiments in the future, we introduce a 3-dimensional effective velocity distribution of halo weakly interacting massive partic... | 3-dimensional effective velocity distribution of halo weakly interacting massive particles scattering off nuclei in direct dark matter detectors |
we explore a model of dark matter (dm) that can explain the reported discrepancy in the muon anomalous magnetic moment and predict a large electric dipole moment (edm) of the muon. the model contains a dm fermion and new scalars whose exclusive interactions with the muon radiatively generate the observed muon mass. con... | a large muon edm from dark matter |
we study the type-ii first-order electroweak phase transition and dark matter (dm) phenomenology in both real and complex singlet extensions of sm . in the real singlet extension with a bbb z2 symmetry, we show that the parameter regions favored by the phase transition suffer from strong constraints from dm direct dete... | electroweak phase transition confronted with dark matter detection constraints |
over almost three decades the taup conference has seen a remarkable momentum gain in direct dark matter search. an important accelerator were first indications for a modulating signal rate in the dama/nai experiment (today dama/libra) reported in 1997. today the presence of an annual modulation observed by dama, which ... | results of the first nai scintillating calorimeter prototypes by cosinus |
we investigate a scenario in which supersymmetry is broken at a scale ms≥ 1014 gev leaving only a pair of higgs doublets, their superpartners (higgsinos) and a gauge singlet fermion (singlino) besides the standard model fermions and gauge bosons at low energy. the higgsino-singlino mixing induces a small splitting betw... | pseudo-dirac higgsino dark matter in gut scale supersymmetry |
in this article we investigate the benefits of increasing the maximum nuclear recoil energy analysed in dark matter (dm) direct detection experiments. we focus on elastic dm-nucleus interactions, and work within the framework of effective field theory (eft) to describe the scattering cross section. in agreement with pr... | opening the energy window on direct dark matter detection |
experimental collaborations for the large hadron collider conducted many and various searches for supersymmetry. in the absence of signals, lower limits were put on sparticle masses but usually within frameworks with (over-) simplifications relative to the entire indications by supersymmetry models. for complementing c... | future prospects for the minimal supersymmetric standard model |
we revisit the simplest model of higgs portal fermionic dark matter. the dark matter in this scenario is thermally produced in the early universe due to the interactions with the higgs boson which is described by a non-renormalisable dimension-5 operator. the dark matter-higgs scattering amplitude grows as $\propto \sq... | more stringent constraints on the unitarised fermionic dark matter higgs portal |
we show that the existence of a sub-dominant form of dark matter, made of dark "antiatoms" of mass m~ 1 tev and size ȧ0~ 3 fm, can explain the results of direct detection experiments, with a positive signal in dama/nai and dama/libra and no signal in other experiments. the signal comes from the binding of the dark anti... | dark antiatoms can explain dama |
earth's rotation about the sun produces an annual modulation in the expected scattering rate at direct dark matter detection experiments. the annual modulation as a function of the recoil energy er imparted by the dark matter particle to a target nucleus is expected to vary depending on the detector material. however, ... | prospects for detection of target-dependent annual modulation in direct dark matter searches |
we demonstrate that the observation of old strange quark stars (sqss) can set important limits on the scattering cross-sections {σ }q between light quarks and non-interacting scalar dark matter (dm). by analyzing a set of 1403 solitary pulsar-like compact stars in the milky way, we find that the old solitary pulsar psr... | strange quark stars as a probe of dark matter |
the direct detection of dark matter constituents, in particular the weakly interacting massive particles (wimps), is considered central to particle physics and cosmology. in this paper we study transitions to the excited states, possible in nuclei which have sufficiently low-lying excited states. examples considered pr... | inelastic wimp-nucleus scattering to the first excited state in 125te |
this white paper summarizes the activities of the brazilian community concerning dark matter physics and highlights the importance of financial support to brazilian groups that are deeply involved in experimental endeavours. the flagships of the brazilian dark matter program are the cherenkov telescope array, darkside,... | brazilian community report on dark matter |
we study a new physics scenario with two inert and one active scalar doublets, hence a 3-higgs doublet model (3hdm). we impose a z2×z2' symmetry onto such a 3hdm with one inert doublet odd under the z2 transformation and the other odd under the z2' one. such a construction leads to a two-component dark matter (dm) mode... | complementary collider and astrophysical probes of multi-component dark matter |
we report on the observation of impact ionization processes involving shallow impurity states in a sub-kelvin, high-purity n-type germanium detector similar to those used by direct detection dark matter experiments such as the cryogenic dark matter search. an optical fiber is used to generate packets of charge carriers... | observation of impact ionization of shallow states in sub-kelvin, high-purity germanium |
well-motivated electroweak dark matter is often hosted by an extended electroweak sector that also contains new lepton pairs with masses near the weak scale. in this study, we explore such electroweak dark matter by combining dark matter direct detection experiments and high-luminosity lhc probes of new lepton pairs. u... | probing electroweak dark matter at 14 tev lhc |
we present a summary of the current status of searches for dark matter at the lhc from the atlas and cms experiments. for various assumptions in the simplified parameter space, the lhc exclusions is complementary to direct detection results. mono-object analyses in search of dark matter and various analyses searching f... | dark matter searches at the lhc |
we investigate the vacuum stability and perturbativity of a pseudoscalar portal dark matter (dm) model with a dirac dm candidate, through the renormalization group equation analysis at one-loop order. the model has a particular feature which can evade the direct detection upper bounds measured by xenon100 and even that... | renormalization group equation analysis of a pseudoscalar portal dark matter model |
the first-year results from deap-3600, a single-phase liquid argon direct-detection dark matter experiment, were recently reported. at first sight, they seem to provide no new constraints, as the limit lies well within the region already excluded by three different xenon experiments: lux, pandax-ii, and xenon1t. we poi... | new constraints on xenonphobic dark matter from deap-3600 |
in this note we revisit the susy effects in rb under current experimental constraints including the lhc higgs data, the b-physics measurements, the dark matter relic density and direct detection limits, as well as the precision electroweak data. we first perform a scan to figure out the currently allowed parameter spac... | susy effects in rb: revisited under current experimental constraints |
we explore a scenario where dark matter (dm) couples to the standard model mainly via a scalar mediator s that is odd under a z_2 symmetry, leading to interesting collider signatures. in fact, if linear interactions with the mediator are absent the most important dm production mechanisms at colliders could lead to fina... | di-jet/e+e-+met to probe z_2-odd mediators to the dark sector |
this article is an addendum to [s. baek et al., phys. rev. d 90, 055014 (2014)., 10.1103/physrevd.90.055014]. here, we discuss the invisible higgs decay width γhinv in the higgs portal vector dark matter (vdm) model in the limit mv→0+. in the effective field theory (eft) approach where the vdm mass is attributed to the... | addendum to "invisible higgs decay width versus dark matter direct detection cross section in higgs portal dark matter models" |
in the dark matter (dm) direct detection community, the absence of convincing signals has become a "new normal" for decades. among other possibilities, the "new normal" might indicate that dm-matter interactions could generate not only the hypothetical nr (nuclear recoil) events but also the er (electron recoil) ones, ... | search for er and/or nr-like dark matter signals with the especially low background liquid helium tpcs |
quantum theory, general relativity, the standard model of particle physics, and the $\lambda$cdm model of cosmology have all been spectacularly successful within their respective regimes of applicability, but each of these descriptions also has clear limitations. here we propose a fundamental theory which (like string ... | the cosmological constant, dark matter, supersymmetry, and other unsolved problems from a fresh perspective |
the complementarity of direct, indirect and collider searches for dark matter has improved our understanding concerning the properties of the dark matter particle. in this short review, we present a step toward the fundamental nature of dark matter with direct detection experiments only, go through some of the potentia... | wimp theory review |
if dm-matter scatterings are assumed to occur in a detector's target material, collisions will naturally take place inside the bulk of planets and stars as well. for large cross sections, these scatterings might occur in the earth or sun even prior to the detection. in this thesis, we study the impact of these pre-dete... | dark matter in the earth and the sun -- simulating underground scatterings for the direct detection of low-mass dark matter |
we investigate the impact of uncertainty in the velocity distribution of dark matter on direct detection experiments. we construct an multinomial prior with a hyperparameter β that describes the strength of our belief in an isotropic maxwell-boltzmann velocity distribution. by varying β, we interpolate between a halo-i... | non-parametric uncertainties in the dark matter velocity distribution |
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