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an important source of background in direct searches for low-mass dark matter particles are the energy deposits by small-angle scattering of environmental γ rays. we report detailed measurements of low-energy spectra from compton scattering of γ rays in the bulk silicon of a charge-coupled device (ccd). electron recoil... | measurement of low energy ionization signals from compton scattering in a charge-coupled device dark matter detector |
this paper is the first report of n-type gaas as a cryogenic scintillation radiation detector for the detection of electron recoils from interacting dark matter (dm) particles in the poorly explored mev/c2 mass range. seven gaas samples from two commercial suppliers and with different silicon and boron concentrations w... | cryogenic scintillation properties of n-type gaas for the direct detection of mev/c2 dark matter |
if dark matter has a finite size that is larger than its compton wavelength, the corresponding self-interaction cross section decreases with the velocity. we investigate the implications of this puffy dark matter for addressing the small-scale problems of the λ cold dark matter model and show that the way the nonrelati... | finite-size dark matter and its effect on small-scale structure |
what if the dark matter-nucleon scattering cross section is too small to be detected by direct detection experiments? it is well known in the literature that some interactions lead to dark matter-nucleon scattering cross sections that can be velocity and momentum suppressed. we show that in the case of bosonic dark mat... | detecting bosonic dark matter with neutron stars |
we construct models of dark matter with suppressed spin-independent scattering cross section utilizing the existing simplified model framework. even simple combinations of simplified models can exhibit interference effects that cause the tree level contribution to the scattering cross section to vanish, thus demonstrat... | less-simplified models of dark matter for direct detection and the lhc |
scenarios for multi-component scalar dark matter based on a single zn (n ≥ 4) symmetry are simple and well-motivated. in this paper we investigate, for the first time, the phenomenology of the z5 model for two-component dark matter. this model, which can be seen as an extension of the well-known singlet scalar model, f... | the z5 model of two-component dark matter |
we propose to introduce general messenger-matter interactions in the deflected anomaly mediated supersymmetry (susy) breaking (amsb) scenario to explain the gμ-2 anomaly. scenarios with complete or incomplete grand unified theory (gut) multiplet messengers are discussed, respectively. the introduction of incomplete gut... | solving the muon g -2 anomaly in deflected anomaly mediated susy breaking with messenger-matter interactions |
new experiments with spheres-gas (news-g) is a dark matter direct detection experiment that will operate at snolab (canada). similar to other rare-event searches, the materials used in the detector construction are subject to stringent radiopurity requirements. the detector features a 140-cm diameter proportional count... | copper electroplating for background suppression in the news-g experiment |
precise experimental setups for detection of variation of fundamental constants, scalar dark matter, or gravitational waves, such as laser interferometers, optical cavities, and resonant-mass detectors, are directly linked to measuring changes in material size. here we present calculated and experiment-derived estimate... | material size dependence on fundamental constants |
the use of simplified models as a tool for interpreting dark matter collider searches has become increasingly prevalent, and while early run ii results are beginning to appear, we look to see what further information can be extracted from the run i dataset. we consider three `standard' simplified models that couple qua... | collide and conquer: constraints on simplified dark matter models using mono- x collider searches |
we study minimal benchmark models of dark matter with an extra anomaly-free u(1)' gauge boson z'. we find model parameters that give rise to the correct cosmological dark matter density while evading the latest direct detection searches for dark matter scattering produced by the xenon1t experiment, including the effect... | phenomenological constraints on anomaly-free dark matter models |
we propose a novel dark matter detection method utilizing the excitation of superconducting transmon qubits. assuming the hidden photon dark matter of a mass of o (10 ) μ ev , the classical wave-matter oscillation induces an effective ac electric field via the small kinetic mixing with the ordinary photon. this serves ... | detecting hidden photon dark matter using the direct excitation of transmon qubits |
we explore the reach of low-background experiments made of small quantities of heavy nuclear isotopes in probing the parameter space of inelastic dark matter that is kinematically inaccessible to classic direct detection experiments. through inelastic scattering with target nuclei, dark matter can yield a signal via ei... | pushing the frontier of wimpy inelastic dark matter: journey to the end of the periodic table |
we present a detection scheme to search for qcd axion dark matter, that is based on a direct interaction between axions and electrons explicitly predicted by dfsz axion models. the local axion dark matter field shall drive transitions between zeeman-split atomic levels separated by the axion rest mass energy mac2. axio... | axion dark matter detection by laser induced fluorescence in rare-earth doped materials |
in scenarios where dark matter interacts differently with protons and neutrons (isospin-violating dark matter), the interpretation of the experimental limits on the dark matter spin-independent cross section may be significantly modified. on the one hand, the direct detection constraints are shifted depending on the ta... | isospin-violating dark matter in the light of recent data |
it was recently pointed out that direct detection signals from at least three different targets may be used to determine whether the dark matter (dm) particle is different from its antiparticle. in this work, we examine in detail the feasibility of this test under different conditions, motivated by proposals for future... | prospects for determining the particle/antiparticle nature of wimp dark matter with direct detection experiments |
dark matter (dm) simplified models are by now commonly used by the atlas and cms collaborations to interpret searches for missing transverse energy (etmiss). the coherent use of these models sharpened the lhc dm search program, especially in the presentation of its results and their comparison to dm direct-detection (d... | lhc dark matter working group: next-generation spin-0 dark matter models |
this document summarises the proposal of the lhc dark matter working group on how to present lhc results on s-channel simplified dark matter models and to compare them to direct (indirect) detection experiments. | recommendations on presenting lhc searches for missing transverse energy signals using simplified s-channel models of dark matter |
we examine the consequences of the effective field theory (eft) of dark matter-nucleon scattering for current and proposed direct detection experiments. exclusion limits on eft coupling constants computed using the optimum interval method are presented for supercdms soudan, cdms ii, and lux, and the necessity of combin... | dark matter effective field theory scattering in direct detection experiments |
we study the case of multi-component dark matter, in particular how direct detection signals are modified in the presence of several stable weakly-interacting-massive particles. assuming a positive signal in a future direct detection experiment, stemming from two dark matter components, we study the region in parameter... | on the direct detection of multi-component dark matter: sensitivity studies and parameter estimation |
what if the dark matter-nucleon scattering cross section is too small to be detected by direct detection experiments? it is well known in the literature that some interactions lead to dark matter-nucleon scattering cross sections that can be velocity and momentum suppressed. we show that in the case of bosonic dark mat... | detecting bosonic dark matter with neutron stars |
we scrutinise the widely studied minimal scotogenic model of dark matter (dm) and radiative neutrino mass from the requirement of a strong first order electroweak phase transition (ewpt) and observable gravitational waves at future planned space based experiments. the scalar dm scenario is similar to inert scalar doubl... | observable gravitational waves in minimal scotogenic model |
producing an acceptable thermal relic abundance of dark matter with masses ≫ 102 tev is a challenge. we propose a novel mechanism where gev-scale states establish a tiny thermal relic abundance for dark matter, which is later promoted to ultra massive status by a very light scalar. we refer to this dark matter as a the... | getting a thump from a wimp |
identifying the true theory of dark matter depends crucially on accurately characterizing interactions of dark matter (dm) with other species. in the context of dm direct detection, we present a study of the prospects for correctly identifying the low-energy effective dm-nucleus scattering operators connected to uv-com... | identifying the theory of dark matter with direct detection |
the nature of dark matter is one of the greatest mysteries in modern physics and astronomy. a wide variety of experiments have been carried out worldwide to search for the evidence of particle dark matter. chinese physicists started experimental search for dark matter about ten years ago, and have produced results with... | experimental search for dark matter in china |
the general strategy for dark matter (dm) searches at colliders currently relies on simplified models. in this paper, we propose a new t-channel uv-complete simplified model that improves the existing simplified dm models in two important respects: (i) we impose the full sm gauge symmetry including the fact that the le... | simplified dm models with the full sm gauge symmetry: the case of t-channel colored scalar mediators |
dark matter (dm), arising from an inert higgs doublet, may either be light, below the w mass, or heavy, above about 525 gev. while the light region may soon be excluded, the heavy region is known to be very difficult to probe with either direct detection (dd) experiments or the large hadron collider (lhc). we show that... | observable heavy higgs dark matter |
we introduce and experimentally implement a method for the detector calibration of photon-number-resolving time-bin multiplexing layouts based on the measured click statistics of superconducting nanowire detectors. in particular, the quantum efficiencies, the dark count rates, and the positive operator-valued measures ... | direct calibration of click-counting detectors |
we present new results on the radiopurity of a 3.4-kg nai(tl) crystal scintillator operated in the sabre proof-of-principle detector setup. the amount of potassium contamination, determined by the direct counting of radioactive 40k, is found to be 2.2 ±1.5 ppb , lowest ever achieved for nai(tl) crystals. with the activ... | high sensitivity characterization of an ultrahigh purity nai(tl) crystal scintillator with the sabre proof-of-principle detector |
we discuss the most sensitive constraints on light dark matter (ldm) from accelerator experiments na64 and babar and compare it with recent results from direct searches at xenon1t, damic-m, supercdms, and darkside-50. we show that for the dark photon ($a'$) model with scalar ldm, na64 gives more stringent bounds for $a... | search for light dark matter with accelerator and direct detection experiments: comparison and complementarity of recent results |
the direct search for dark matter in the form of weakly interacting massive particles (wimp) is performed by detecting nuclear recoils (nr) produced in a target material from the wimp elastic scattering. a promising experimental strategy for direct dark matter search employs argon dual-phase time projection chambers (t... | directionality of nuclear recoils in a liquid argon time projection chamber |
squeezed states of light have been used extensively to increase the precision of measurements, from the detection of gravitational waves to the search for dark matter. in the optical domain, high levels of vacuum noise squeezing are possible due to the availability of low loss optical components and high-performance sq... | strong microwave squeezing above 1 tesla and 1 kelvin |
cresst is one of the most prominent direct detection experiments for dark matter particles with sub-gev/c2 mass. one of the advantages of the cresst experiment is the possibility to include a large variety of nuclides in the target material used to probe dark matter interactions. in this work, we discuss in particular ... | probing spin-dependent dark matter interactions with 6li |
the search for a dark matter particle is the new grail and hard-sought nirvana of the particle physics community. from the theoretical side, it is the main challenge to provide a consistent and model-independent tool for comparing the bounds and reach of the diverse experiments. we propose a first complete classificati... | minimal consistent dark matter models for systematic experimental characterisation: fermion dark matter |
dark matter direct (and indirect) detection experiments usually can only determine a specific combination of a power of the coupling and the dark matter density. this is also true for axion haloscopes which are sensitive to the product $g^{2}_{a\gamma\gamma}\rho_{\rm dm}$, the combination of axion-photon coupling squar... | using axion miniclusters to disentangle the axion-photon coupling and the dark matter density |
we consider a natural asymmetric dark matter (adm) model in the mirror twin higgs (mth). we show that it is possible to obtain the correct dark matter (dm) abundance when a twin baryon is the dm without the need of explicit breaking of the mth &z;2 symmetry in the dimensionless couplings (i.e. without hard &z;2 breakin... | baryogenesis and dark matter in the mirror twin higgs |
existing xenon dark matter (dm) direct detection experiments can probe the dm-nucleon interaction of dm with a sub-gev mass through a search for photon emission from the recoiling xenon atom. we show that lux's constraints on sub-gev dm, which utilize the scintillation (s1) and ionization (s2) signals, are approximatel... | new constraints and discovery potential of sub-gev dark matter with xenon detectors |
investigated in this work were sensitivities of a prototype detector for the detection of low-mass dark matter particles produced at the spallation neutron source at the oak ridge national laboratory in 2 years of data taking. the presumed prototype consisted of 10 kg undoped csi or nai scintillation crystals directly ... | prospect of undoped inorganic crystals at 77 kelvin for low-mass dark matter search at spallation neutron source |
atoms and molecules can become ionized during the scattering of a slow, heavy particle off a bound electron. such an interaction involving leptophilic weakly interacting massive particles (wimps) is a promising possible explanation for the anomalous 9 σ annual modulation in the dama dark matter direct detection experim... | ionization of atoms by slow heavy particles, including dark matter |
we analyse the mass reach for electroweakinos at future hadron colliders and their interplay with direct detection experiments. motivated by the lhc data, we focus on split supersymmetry models with different electroweakino spectra. we find for example that a 100 tev collider may explore winos up to ∼ 7 tev in low scal... | hunting electroweakinos at future hadron colliders and direct detection experiments |
we analyze the direct detection signals of a toy model consisting of a dirac dark matter particle which couples to one standard model fermion via a scalar mediator. for all scenarios, the dark matter particle scatters off nucleons via one loop-induced electromagnetic and electroweak moments, as well as via the one-loop... | dirac dark matter with a charged mediator: a comprehensive one-loop analysis of the direct detection phenomenology |
pandax-4t is a dark matter direct detection experiment located in china jinping underground laboratory. the central apparatus is a dual-phase xenon detector containing 4 ton liquid xenon in the sensitive volume, with about 500 photomultipliers instrumented in the top and the bottom of the detector. in this paper we pre... | readout electronics and data acquisition system of pandax-4t experiment |
classical scale invariance is one of the possible solutions to explain the origin of the electroweak scale. the simplest extension is the classically scale-invariant standard model augmented by a multiplet of gauge singlet real scalar. in the previous study it was shown that the properties of the higgs potential deviat... | direct detection of singlet dark matter in classically scale-invariant standard model |
assuming for weakly interacting massive particles (wimps) a maxwellian velocity distribution in the galaxy we explore in a systematic way the relative sensitivity of an extensive set of existing and projected dark matter (dm) direct detection experiments to each of the 14 couplings that parameterize the most general no... | present and projected sensitivities of dark matter direct detection experiments to effective wimp-nucleus couplings |
a radiative natural susy spectrum are proposed in the deflected anomaly mediation scenario with general messenger-matter interactions. due to the contributions from the new interactions, positive slepton masses as well as a large | at | term can naturally be obtained with either sign of deflection parameter and few mes... | radiative natural susy spectrum from deflected amsb scenario with messenger-matter interactions |
we discuss the possibility to detect spin 0, 1 and 1/2 dark matter (dm) at future e+e- colliders. the models considered here are simple, consistent and renormalizable field theories that provide correct dm abundance and satisfy direct detection, indirect detection and collider constraints. the intention of this paper w... | dark-matter-spin effects at future e+e- colliders |
the search for sub-gev dark matter (dm) particles via electronic transitions in underground detectors attracted much theoretical and experimental interest in the past few years. a still open question in this field is whether experimental results can in general be interpreted in a framework where the response of detecto... | dark matter-electron interactions in materials beyond the dark photon model |
we further study the effect of neutral bremsstrahlung (nbrs) in two-phase argon electroluminescence (el), revealed recently in buzulutskov et al. (2018). the absolute el yield due to nbrs effect, in the visible and nir range, was remeasured in pure gaseous argon in the two-phase mode, using a two-phase detector with el... | neutral bremsstrahlung in two-phase argon electroluminescence: further studies and possible applications |
we study the orbital phase space of dark matter (dm) haloes in the auriga suite of cosmological hydrodynamics simulations of milky way (mw) analogues. we characterize haloes by their spherical action distribution, $f\left(j_{{r}},l\right)$ , a function of the specific angular momentum, l, and the radial action, jr, of ... | the orbital phase space of contracted dark matter haloes |
we report constraints on the dark photon effective kinetic mixing parameter (κ ) with data taken from two p -type point-contact germanium detectors of the cdex-10 experiment at the china jinping underground laboratory. the 90% confidence level upper limits on κ of solar dark photon from 205.4 kg-day exposure are derive... | direct detection constraints on dark photons with the cdex-10 experiment at the china jinping underground laboratory |
we reexamine the simplified dark matter (dm) models with fermionic dm particle and spin-0 mediator. the dm-nucleon scattering cross sections in these models are low-momentum suppressed at tree-level, but receive sizable loop-induced spin-independent contribution. we perform one-loop calculations for scalar-type and twi... | simplified dark matter models with loop effects in direct detection and the constraints from indirect detection and collider search |
although they do not address the hierarchy problem, models with universal extra dimensions have attracted a lot of attention as simple benchmark models characterized by small mass splittings and a dark matter (dm) wimp played by the lightest kaluza-klein particle (lkp). we review their status, with emphasis on minimal ... | status report on universal extra dimensions after lhc8 |
direct detection bounds are beginning to constrain a very simple model of weakly interacting dark matter—a majorana fermion with a coupling to the z boson. in a particularly straightforward gauge-invariant realization, this coupling is introduced via a higher-dimensional operator. while attractive in its simplicity, th... | z boson mediated dark matter beyond the effective theory |
this paper describes the design, fabrication, commissioning and use of a calibration source insertion system (calis) in the darkside-50 direct dark matter search experiment. calis deploys radioactive sources into the liquid scintillator veto to characterize the detector response and detection efficiency of the darkside... | calis—a calibration insertion system for the darkside-50 dark matter search experiment |
liquid xenon-based direct detection dark matter experiments have recently expanded their searches to include high-energy nuclear recoil events as motivated by effective field theory dark matter and inelastic dark matter interaction models, but few xenon recoil calibrations above 100 kev are currently available. in this... | calibrating the scintillation and ionization responses of xenon recoils for high-energy dark matter searches |
dual-phase liquid xenon (lxe) detectors lead the direct search for particle dark matter. understanding the signal production process of nuclear recoils in lxe is essential for the interpretation of lxe based dark matter searches. up to now, only two experiments have simultaneously measured both the light and charge yie... | simultaneous measurement of the light and charge response of liquid xenon to low-energy nuclear recoils at multiple electric fields |
we explore the possibility of using superfluid helium for direct detection of sub-gev dark matter (dm). we discuss the relevant phenomenology resulting from the scattering of an incident dark matter particle on a helium nucleus. rather than directly exciting quasi-particles, dm in this mass range will interact with a s... | signatures and detection prospects for sub-gev dark matter with superfluid helium |
at cosmic dawn, the 21 cm signal from intergalactic hydrogen was driven by ly-α photons from some of the earliest stars, producing a spatial pattern that reflected the distribution of galaxies at that time. due to the large foreground, it is thought that at around redshift 20 it is only observationally feasible to dete... | mapping discrete galaxies at cosmic dawn with 21 cm observations |
if dark matter has spin 0, only two wimp-nucleon interaction operators can arise as leading operators from the nonrelativistic reduction of renormalizable single-mediator models for dark matter-quark interactions. based on this crucial observation, we show that about 100 signal events at next generation directional det... | dark matter spin determination with directional direct detection experiments |
grand unified theories (gut) offer an elegant and unified description of electromagnetic, weak and strong interactions at high energy scales. a phenomenological and exciting possibility to grasp gut is to search for tev scale observables arising from abelian groups embedded in gut constructions. that said, we use dilep... | gut models at current and future hadron colliders and implications to dark matter searches |
measurement of the local dark matter density plays an important role in both galactic dynamics and dark matter direct detection experiments. however, the estimated values from previous works are far from agreeing with each other. in this work, we provide a well-defined observed sample with 1427 g- and k-type main-seque... | determining the local dark matter density with lamost data |
models incorporating flavoured dark matter provide an elegant solution to the dark matter problem, evading the tight lhc and direct direction constraints on simple wimp models. in dark minimal flavour violation, a simple framework of flavoured dark matter with new sources of flavour violation, the constraints from ther... | single-top final states as a probe of top-flavoured dark matter models at the lhc |
we present a nonperturbative calculation of the strangeness of the nucleon yn within the framework of lattice qcd. this observable is known to be an important cornerstone to interpret results from direct dark matter detection experiments. we perform a lattice computation for yn with an analysis of systematic effects or... | strangeness of the nucleon from lattice qcd |
the search for dark matter is one of the main science drivers of the particle and astroparticle physics communities. determining the nature of dark matter will require a broad approach, with a range of experiments pursuing different experimental hypotheses. within this search program, collider experiments provide insig... | displaying dark matter constraints from colliders with varying simplified model parameters |
the scattering of dark matter particles off nuclei in direct detection experiments can be described in terms of a multidimensional effective field theory (eft). a new systematic analysis technique is developed using the eft approach and bayesian inference methods to exploit, when possible, the energy-dependent informat... | multidimensional effective field theory analysis for direct detection of dark matter |
light electroweakinos, the neutral and charged fermionic supersymmetric partners of the standard model su (2 )×u (1 ) gauge bosons and of the two su(2) higgs doublets, are an important target for searches for new physics with the large hadron collider (lhc). however, if the lightest neutralino is the dark matter, const... | not-so-well-tempered neutralino |
sub-gev mass dark matter particles whose collisions with nuclei would not deposit sufficient energy to be detected, could instead be revealed through their interaction with electrons. analyses of data from direct detection experiments usually require assuming a local dark matter halo velocity distribution. in the halo-... | halo-independent analysis of direct dark matter detection through electron scattering |
we show that dark matter axions or axion-like particles (alp) induce spontaneously alternating electric currents in conductors along the external magnetic fields due to the (medium) axial anomaly, realizing the chiral magnetic effects. we propose a new experiment to measure this current to detect the dark matter axions... | detecting axion dark matter with chiral magnetic effects |
it has been suggested that several small-scale structure anomalies in λ cdm cosmology can be solved by strong self-interaction between dark matter particles. it was shown by braaten and hammer [phys. rev. d 88, 063511 (2013), 10.1103/physrevd.88.063511] that the presence of a near threshold s-wave resonance can make th... | directional detection of dark matter in universal bound states |
we analyze a simple extension of the standard model where the dark matter particle is a dirac fermion that is a mixture of a singlet and an s u (2 ) doublet. the model contains only four free parameters: the singlet and the doublet masses and two new yukawa couplings. direct detection bounds in this model are very stro... | singlet-doublet dirac dark matter |
while most scintillation-based dark matter experiments search for weakly interacting massive particles (wimps), a sub-gev wimp-like particle may also be detectable in these experiments. while dark matter of this type and scale would not leave appreciable nuclear recoil signals, it may instead induce ionization of atomi... | accurate electron-recoil ionization factors for dark matter direct detection in xenon, krypton, and argon |
the dark matter particle explorer (dampe) is a space high-energy cosmic-ray detector covering a wide energy band with a high energy resolution. one of the key scientific goals of dampe is to carry out indirect detection of dark matter by searching for high-energy gamma-ray line structure. to promote the sensitivity of ... | optimal gamma-ray selections for monochromatic line searches with dampe |
two photo-neutron sources, 88y 9be and 124sb 9be, have been used to investigate the ionization yield of nuclear recoils in the cdmslite germanium detectors by the supercdms collaboration. this work evaluates the yield for nuclear recoil energies between 1 and 7 kev at a temperature of ∼ 50 mk . we use a geant4 simulati... | ionization yield measurement in a germanium cdmslite detector using photo-neutron sources |
we propose a test based on direct detection data that allows us to determine if the dark matter particle is different from its antiparticle. the test requires the precise measurement of the dark matter spin-independent direct detection cross sections off three different nuclei and consists of interpreting such signals ... | is the dark matter particle its own antiparticle? |
we present the first search for a dark matter annual modulation signal in the southern hemisphere conducted with nai(tl) detectors, performed by the dm-ice17 experiment. nuclear recoils from dark matter interactions are expected to yield an annually modulated signal independent of location within the earth's hemisphere... | first search for a dark matter annual modulation signal with nai(tl) in the southern hemisphere by dm-ice17 |
dark matter that interacts strongly with baryons can avoid the stringent dark matter direct detection constraints, because, like baryons, they are likely to be absorbed when traversing the rocks, leading to a suppressed flux in deep underground labs. such strongly interacting dark matter, however, can be probed by dark... | xqc and csr constraints on strongly interacting dark matter with spin and velocity dependent cross sections |
as experimental null results increase the pressure on heavy weakly interacting massive particles (wimps) as an explanation of thermal dark matter (dm), it seems timely to explore previously overlooked regions of the wimp parameter space. in this work we extend the minimal gauged $u(1)_{l_\mu-l_\tau}$ model studied in \... | let there be light dark matter: the gauged $u(1)_{l_\\mu-l_\\tau}$ case |
we study the experimental signatures of top flavored dark matter (top fdm) in direct detection searches and at the lhc. we show that for a dark matter mass above 200 gev, top fdm can be consistent with current bounds from direct detection experiments and relic abundance constraints. we also show that next generation di... | signatures of top flavored dark matter |
the discovery of argon from deep underground sources with significantly less 39ar than atmospheric argon was an important step in the development of direct dark matter detection experiments using argon as the active target. we report on the design and operation of a low-background single-phase liquid argon detector tha... | a study of the trace 39ar content in argon from deep underground sources |
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 in both the resonant and large mass region. 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 |
supersymmetric extensions of the standard model with scalar superpartners above 10 tev are well motivated since the higgs boson mass can be explained by quantum corrections while maintaining gauge coupling unification. if supersymmetry breaking is transmitted to gauginos via anomaly mediation, the gaugino masses are lo... | discovery potential for split supersymmetry with thermal 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 a... | dark matter in minimal dimensional transmutation with multicritical-point principle |
we review the recent status of big bounce genesis as a new possibility of using dark matter particles' mass and interaction cross-section to test the existence of a bounce universe at the early stage of evolution in our currently-observed universe. to study the dark matter production and evolution inside the bounce uni... | big bounce genesis and possible experimental tests: a brief review |
we explore the potential of future cryogenic direct detection experiments to determine the properties of the mediator that communicates the interactions between dark matter and nuclei. due to their low thresholds and large exposures, experiments like cresst-iii, supercdms snolab and edelweiss-iii will have excellent ca... | exploring light mediators with low-threshold direct detection experiments |
in the presence of a real singlet scalar field with z2 symmetry in addition to the higgs field in the standard model, we analytically investigate all possible one-step and two-step electroweak phase transitions (ewpt) in the high-temperature expansion limit. in particular, we examine the possibility of a first-order ph... | vacuum structure and electroweak phase transition in singlet scalar dark matter |
the dark axion portal provides a model for dark matter (dm) in which both dark photons $\gamma^\prime$ and axions $a$ can contribute to the present day abundance of dm. we study the parameter space of the dark axion portal to pinpoint regions of the parameter space where $\gamma^\prime$ and $a$ can be produced with suf... | cosmology and direct detection of the dark axion portal |
we present a class of models in which dark matter (dm) is a fermionic singlet under the standard model (sm) gauge group but is charged under a symmetry of flavor that acts as well on the sm fermions. interactions between dm and sm particles are mediated by the scalar fields that spontaneously break the flavor symmetry,... | flavor portal to dark matter |
the interpretation of dark matter direct detection experiments is complicated by the fact that neither the astrophysical distribution of dark matter nor the properties of its particle physics interactions with nuclei are known in detail. to address both of these issues in a very general way we develop a new framework t... | studying generalised dark matter interactions with extended halo-independent methods |
the existence of dark matter and dark energy in cosmology is implied by various observations, however, they are still unclear because they have not been directly detected. in this letter, an unified model of dark energy and dark matter that can explain the evolution history of the universe later than inflationary era, ... | unified description of dark energy and dark matter in mimetic matter model |
the evidence of environmental dependence of sn ia luminosity has inspired recent discussion about whether the late-universe cosmic acceleration is still supported by supernova data. we adopt the δhr/δage parameter, which describes the dependence of supernova absolute magnitude on the age of supernova progenitor, as an ... | supernova magnitude evolution and page approximation |
we select a sample of milky way (mw) mass haloes from a high-resolution version of the eagle simulation to study their inner dark matter (dm) content and how baryons alter it. as in previous studies, we find that all haloes are more massive at the centre compared to their dark matter-only (dmo) counterparts at the pres... | baryon-driven decontraction in milky way-mass haloes |
we propose a minimal dark matter (mdm) scenario in the context of a simple gauge-higgs unification (ghu) model based on the gauge group s u (3 )×u (1 )' in five-dimensional minkowski space with a compactification of the fifth dimension on the 1s/z2 orbifold. a pair of vectorlike s u (3 ) multiplet fermions in a higher-... | fermionic minimal dark matter in 5d gauge-higgs unification |
the nature of dark matter (dm) and how it may interact with the various fields of the standard model (sm) remains a mystery. in this paper we show that the interaction between new light dark matter mediators and the sm particles can be naturally suppressed if one employs a single, flat extra dimension (ed). in this set... | thick branes in extra dimensions and suppressed dark couplings |
we point out that the direct detection of dark matter via its electro-magnetic polarizability is described by two new nuclear form factors, which are controlled by the 2-nucleon nuclear density. the signature manifests a peculiar dependence on the atomic and mass numbers of the target nuclei, as well as on the momentum... | direct detection of dark matter polarizability |
direct detection of light dark matter (dm), below the gev scale, through electron recoil can be efficient if dm has a velocity well above the virial value of v ∼10-3. we point out that if there is a long range attractive force sourced by bulk ordinary matter, i.e., baryons or electrons, dm can be accelerated towards th... | attractive scenario for light dark matter direct detection |
dual-phase xenon time projection chamber (tpc) detectors have demonstrated superior search sensitivities to dark matter over a wide range of particle masses. to extend their sensitivity to include low-mass dark matter interactions, it is critical to characterize both the light and charge responses of liquid xenon to su... | improved dark matter search sensitivity resulting from lux low-energy nuclear recoil calibration |
we study the effects of inelastic dark matter (dm) self-interactions on the internal structure of a simulated milky way (mw)-size halo. self-interacting dark matter (sidm) is an alternative to collisionless cold dark matter (cdm) which offers a unique solution to the problems encountered with cdm on sub-galactic scales... | the impact of inelastic self-interacting dark matter on the dark matter structure of a milky way halo |
the relative sensitivity of different direct detection experiments depends sensitively on the astrophysical distribution and particle physics nature of dark matter, prohibiting a model-independent comparison. the situation changes fundamentally if two experiments employ the same target material. we show that in this ca... | model-independent comparison of annual modulation and total rate with direct detection experiments |
dark matter particles with masses in the sub-giga electron volt range have escaped severe constraints from direct detection experiments such as lux, pandax-ii, and xenon100, as the corresponding recoil energies are, largely, lower than the detector thresholds. in a companion paper, we demonstrated, in a model independe... | model independent analysis of mev scale dark matter. ii. implications from e-e+ colliders and direct detection |
we consider a class of b - τ yukawa unified supersymmetric (susy) su(5) guts, in which the asymptotic gaugino m 1,2,3 masses are generated through the mirage mediated supersymmetry breaking, which is a combination of the gravity and anomaly mediation. due to the contributions from the anomaly contribution, m 3 is alway... | b - τ yukawa unification in susy su(5) with mirage mediation: lhc and dark matter implications |
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