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split higgsinos are a compelling class of models to explain dark matter and may be on the verge of detection by multiple current experimental avenues. the idea is based on a large split in scales between the electroweak scale and decoupled scalars, with relatively light higgsinos between the two. such models enjoy the ... | race to find split higgsino dark matter |
new fundamental particles at the mass scale of a few tev c-2 could account for observed phenomena that cannot be explained by the standard model (sm) of particle physics, including the microscopic origin of dark matter and the macroscopic imbalance of matter over antimatter in the universe. however, no beyond-the-sm (b... | atoms and molecules in the search for time-reversal symmetry violation |
in the simplest higgs-portal scalar dark matter model, the dark matter mass has been restricted to be either near the resonant mass (mh / 2) or in a large-mass region by the direct detection at lhc run 1 and lux. while the large-mass region below roughly 3 tev can be probed by the future xenon1t experiment, most of the... | collider signatures of higgs-portal scalar dark matter |
we propose new ideas to directly search for light dark matter, such as the axion or the dark photon, by using magnetometry with nitrogen-vacancy centers in diamonds. if the dark matter couples to the electron spin, it affects the evolution of the bloch vectors consisting of the spin triplet states, which may be detecte... | light dark matter search with nitrogen-vacancy centers in diamonds |
the present work investigates the possibility that both dark matter and the anomalous magnetic moment of the muon may be explained within the context of the inverse seesaw extended next-to-minimal supersymmetric standard model (iss-nmssm). in iss-nmssm, the newly introduced higgs-neutrino yukawa coupling yν provides ad... | anomalous muon magnetic moment in the inverse seesaw extended next-to-minimal supersymmetric standard model |
we study dark matter (dm) phenomenology with multiple dm species consisting of both scalar and vector dm particles. more specifically, we study the hidden gauged su(3) model of arcadi et al. before proceeding to the hidden gauged su(3) model, we study the relic abundances of simplified multispecies dm scenarios to gain... | multicomponent dark matter from a hidden gauged su(3) |
direct detection for sub-gev dark matter is developing rapidly, with many novel experimental ideas and theoretical methods emerging. in this work, we extend the dielectric formalism for dark matter scattering to incorporate anisotropic material responses, enabling directionally sensitive experiments with a broad class ... | directional detection of dark matter with anisotropic response functions |
for direct detection of sub-mev dark matter, a promising strategy is to search for individual phonon excitations in a crystal. we perform an analytic calculation of the rate for light dark matter (kev <mdm<mev ) to produce two acoustic phonons through scattering in cubic crystals such as gaas, ge, si, and diamond... | multiphonon excitations from dark matter scattering in crystals |
neutron stars can provide new insight into dark matter properties, as these dense objects capture dark matter particles very efficiently. it has recently been shown that the energy transfer in the dark matter capture process can lead to appreciable heating of neutron stars, which may be observable with forthcoming infr... | heating up neutron stars with inelastic dark matter |
the earth-stopping effect plays a crucial role in the direct detection of sub-gev dark matter. besides the elastic scattering process, the quasielastic and deep inelastic scatterings between dark matter and nucleus that are usually neglected can dominate the interaction, especially in the accelerated dark matter scenar... | accelerated-light-dark-matter-earth inelastic scattering in direct detection |
the migdal effect is attracting interest because of the potential to enhance the sensitivities of direct dark matter searches to the low-mass region. in spite of its great importance, the migdal effect has not been experimentally observed yet. a realistic experimental approach towards the first observation of the migda... | detection capability of the migdal effect for argon and xenon nuclei with position-sensitive gaseous detectors |
the scattering of neutral particles by an atomic nucleus can lead to electronic ionisation and excitation through a process known as the migdal effect. we revisit and improve upon previous calculations of the migdal effect, using the dirac-hartree-fock method to calculate the atomic wavefunctions. our methods do not re... | precise predictions and new insights for atomic ionisation from the migdal effect |
light dark sectors in thermal contact with the standard model can naturally produce the observed relic dark matter abundance and are the targets of a broad experimental search program. a key light dark sector model is the pseudo-dirac fermion with a dark photon mediator. the dynamics of the fermionic excited states are... | electromagnetic signals of inelastic dark matter scattering |
the annual modulation signal observed by the dama experiment is a long-standing question in the community of dark matter direct detection. this necessitates an independent verification of its existence using the same detection technique. the cosine-100 experiment has been operating with 106 kg of low-background nai(tl)... | development of ultra-pure nai(tl) detectors for the cosine-200 experiment |
the dark matter interpretation for a recent observation of excessive electron recoil events at the xenon1t detector seems challenging because its velocity is not large enough to give rise to recoiling electrons of o (kev ). fast-moving or boosted dark matter scenarios are receiving attention as a remedy for this issue,... | implications of the xenon1t excess on the dark matter interpretation |
in this paper, the electroweak phase transition, the gravitational waves and the dark matter issues are investigated in two scalar singlet extension of the standard model. the detectability of the gravitational wave signals are discussed by comparing the results with the sensitivity curves of elisa, alia, decigo and bb... | electroweak phase transition, gravitational waves and dark matter in two scalar singlet extension of the standard model |
generically, the effective coupling between the dark matter and an atom scales with the number of constituents in the atom, resulting in the effective coupling being proportional to the mass of the atom. in this limit, when the momentum transfer is also small, we show that the leading term in the scattering of a partic... | dark matter phonon coupling |
we investigate direct detection signatures of dark matter particles interacting with quarks via a light spin-0 mediator with general cp phases. since tree-level scattering may be strongly suppressed in the non-relativistic limit, loop contributions play an important role and can lead to observable signals in near-futur... | loop-induced direct detection signatures from cp-violating scalar mediators |
dark matter direct detection experiments are designed to look for the scattering of dark matter particles that are assumed to move with virial velocities $\sim 10^{-3}$. at these velocities, the energy deposition in the detector is large enough to cause ionization/scintillation, forming the primary class of signatures ... | calorimetric detection of dark matter |
we present converged ab initio calculations of structure factors for elastic spin-dependent wimp scattering off all nuclei used in dark matter direct-detection searches: 19f, 23na, 27al, 29si, 73ge, 127i, and 129xe131. from a set of established two- and three-nucleon interactions derived within chiral effective field t... | ab initio structure factors for spin-dependent dark matter direct detection |
the detection of ultralight dark matter through interactions with nucleons, electrons, and photons has been explored in depth. in this work we propose to use precision muon experiments, specifically muon g-2 and electric dipole moment measurements, to detect ultralight dark matter (dm) that couples predominantly to muo... | muon g-2 and edm experiments as muonic dark matter detectors |
we propose a simple theory for the idea that cosmological dark matter (dm) may be present today mainly in the form of stable neutral hadronic thermal relics. in our model, neutrino masses arise radiatively from the exchange of colored dm constituents, giving a common origin for both dark matter and neutrino mass. the e... | bound-state dark matter and dirac neutrino masses |
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 |
superconducting detectors have been proposed as outstanding targets for the direct detection of light dark matter scattering at masses as low as a kev. we study the prospects for directional detection of dark matter in isotropic superconducting targets from the angular distribution of excitations produced in the materi... | directional detection of light dark matter in superconductors |
new ideas for low-mass dark matter direct detection suggest that narrow band gap materials, such as dirac semiconductors, are sensitive to the absorption of mev dark matter or the scattering of kev dark matter. here we propose spin-orbit semiconductors—materials whose band gap arises due to spin-orbit coupling—as low-m... | prediction of tunable spin-orbit gapped materials for dark matter detection |
the dark matter experiment using argon pulse-shape discrimination (deap) has been designed for a direct detection search for particle dark matter using a single-phase liquid argon target. the projected cross section sensitivity for deap-3600 to the spin-independent scattering of weakly interacting massive particles (wi... | design and construction of the deap-3600 dark matter detector |
the dama/libra collaboration has reported the observation of an annual modulation in the event rate that has been attributed to dark matter interactions over the last two decades. however, even though tremendous efforts to detect similar dark matter interactions were pursued, no definitive evidence has been observed to... | an induced annual modulation signature in cosine-100 data by dama/libra's analysis method |
direct detection of and lhc search for the singlet fermion dark matter (sfdm) model with higgs portal interaction are considered in a renormalizable model where the full standard model (sm) gauge symmetry is imposed by introducing a singlet scalar messenger. in this model, direct detection is described by an effective ... | beyond the dark matter effective field theory and a simplified model approach at colliders |
atomic nuclei are important laboratories for exploring and testing new insights into the universe, such as experiments to directly detect dark matter or explore properties of neutrinos. the targets of interest are often heavy, complex nuclei that challenge our ability to reliably model them (as well as quantify the unc... | lipkin model on a quantum computer |
we present the migdal in galactic dark matter exploration (migdal) experiment aiming at the unambiguous observation and study of the so-called migdal effect induced by fast-neutron scattering. it is hoped that this elusive atomic process can be exploited to enhance the reach of direct dark matter search experiments to ... | the migdal experiment: measuring a rare atomic process to aid the search for dark matter |
one of the highest priorities in particle physics today is the identification of the constituents of dark matter. this manuscript is a supplement to pedagogical lectures given at the 2021 les houches summer school on dark matter. the lectures cover topics related to the direct detection of wimp dark matter, including t... | dark matter direct detection of classical wimps |
measuring dark matter (dm) signals via electron recoil provides an important means for direct detection of light dm particles. the recent xenon1t anomaly with electron recoil energy around er = (2-3) kev can be naturally explained by dm inelastic scattering which injects energy to the recoiled electrons and gives a nar... | eft approach of inelastic dark matter for xenon electron recoil detection |
we assess the status of a wide class of wimp dark matter (dm) models in light of the latest experimental results using the global fitting framework gambit. we perform a global analysis of effective field theory (eft) operators describing the interactions between a gauge-singlet dirac fermion and the standard model quar... | thermal wimps and the scale of new physics: global fits of dirac dark matter effective field theories |
the measurement of an annual modulation in the event rate of direct dark matter detection experiments is a powerful tool for dark matter discovery. indeed, several experiments have already claimed such a discovery in the past decade. while most of them have later revoked their conclusions, and others have found potenti... | annual modulation in direct dark matter searches |
in the framework of the mssm, we examine several simplified models where only a few superpartners are light. this allows us to study wimp-nucleus scattering in terms of a handful of mssm parameters and thereby scrutinize their impact on dark matter direct-detection experiments. focusing on spin-independent wimp-nucleon... | light stops, blind spots, and isospin violation in the mssm |
the observation of the higgs boson solidified the standard model of particle physics. however, explanations of anomalies (for example, dark matter) rely on further symmetry breaking, calling for an undiscovered axial higgs mode1. the higgs mode was also seen in magnetic, superconducting and charge density wave (cdw) sy... | axial higgs mode detected by quantum pathway interference in rte3 |
the xenon1t experiment uses a time projection chamber (tpc) with liquid xenon to search for weakly interacting massive particles (wimps), a proposed dark matter particle, via direct detection. as this experiment relies on capturing rare events, the focus is on achieving a high recall of wimp events. hence the ability t... | convolutional neural networks for direct detection of dark matter |
the migdal effect has received much attention from the dark matter direct detection community, in particular due to its power in setting leading limits on sub-gev particle dark matter. however, it is crucial to obtain experimental confirmation of the migdal effect through nuclear scattering using standard model probes.... | measuring the migdal effect in semiconductors for dark matter detection |
dirac fermion dark matter models with heavy z ' mediators are subject to stringent constraints from spin-independent direct searches and from lhc bounds, cornering them to live near the z ' resonance. such constraints can be relaxed, however, by turning off the vector coupling to standard model fermions, thus weakening... | augury of darkness: the low-mass dark z ' portal |
in this work we present a simple extension of the standard model that contains, as the only new physics component, a massive spin-one matter field in the adjoint representation of s u (2 )l. in order to be consistent with perturbative unitarity, the vector field must be odd under a z2 symmetry. radiative corrections ma... | minimal spin-one isotriplet dark matter |
in this white paper we present and discuss a concrete proposal for the consistent interpretation of dark matter searches at colliders and in direct detection experiments. based on a specific implementation of simplified models of vector and axial-vector mediator exchanges, this proposal demonstrates how the two search ... | interplay and characterization of dark matter searches at colliders and in direct detection experiments |
we analyze data from the dark matter direct detection experiments pandax-4t, lux-zeplin and xenonnt to place bounds on neutrino electromagnetic properties (magnetic moments, millicharges, and charge radii). we also show how these bounds will improve at the future facility darwin. in our analyses we implement a more con... | testing neutrino electromagnetic properties at current and future dark matter experiments |
we study the structure factors for spin-independent wimp scattering off xenon based on state-of-the-art large-scale shell-model calculations, which are shown to yield a good spectroscopic description of all experimentally relevant isotopes. our results are based on the leading scalar one-body currents only. at this lev... | nuclear structure aspects of spin-independent wimp scattering off xenon |
direct detection experiments for light (sub-gev) dark matter are making enormous leaps in reaching previously unexplored theory space. the need for accurate characterizations of target responses has led to a growing interplay between particle and condensed matter physics. this white paper summarizes recent progress on ... | snowmass white paper: light dark matter direct detection at the interface with condensed matter physics |
due to the low nuclear recoils, sub-gev dark matter (dm) is usually beyond the sensitivity of the conventional dm direct detection experiments. the boosted and migdal scattering mechanisms have been proposed as two new complementary avenues to search for light dm. in this study, we consider the momentum-transfer effect... | new strong bounds on sub-gev dark matter from boosted and migdal effects |
we consider loop level contributions to dark matter— nucleon scattering in cases where the spin independent scattering cross section is absent or suppressed at tree level. in the case of a pseudoscalar interaction, for which the tree level cross section is both spin-dependent and suppressed by 4 powers of the exchanged... | loop effects in direct detection |
we explore the relic density of dark matter and the particle spectrum within a constrained version of an e6 inspired susy model with an extra u(1)n gauge symmetry. in this model a single exact custodial symmetry forbids tree-level flavor-changing transitions and the most dangerous baryon and lepton number violating ope... | e6 inspired susy benchmarks, dark matter relic density and a 125 gev higgs |
in this paper, we minimize and compare two different fine-tuning measures in four high-scale supersymmetric models that are embedded in the mssm. in addition, we determine the impact of current and future dark matter direct detection and collider experiments on the fine-tuning. we then compare the low-scale electroweak... | the current status of fine-tuning in supersymmetry |
conventional dark matter direct detection experiments set stringent constraints on dark matter by looking for elastic scattering events between dark matter particles and nuclei in underground detectors. however these constraints weaken significantly in the sub-gev mass region, simply because light dark matter does not ... | damascus: the impact of underground scatterings on direct detection of light dark matter |
the large underground xenon (lux) dark matter experiment aims to detect rare low-energy interactions from weakly interacting massive particles (wimps). the radiogenic backgrounds in the lux detector have been measured and compared with monte carlo simulation. measurements of lux high-energy data have provided direct co... | radiogenic and muon-induced backgrounds in the lux dark matter detector |
next generation direct dark matter detection experiments are favorable facilities to probe neutrino properties and light mediators beyond the standard model. we explore the implications of the recent data reported by lux-zeplin (lz) and xenonnt collaborations on electromagnetic neutrino interactions and neutrino genera... | implications of first lz and xenonnt results: a comparative study of neutrino properties and light mediators |
the korea invisible mass search (kims) collaboration has developed low-background nai(tl) crystals that are suitable for the direct detection of wimp dark matter. building on experience accumulated during the kims-csi programs, the kims-nai experiment will consist of a 200 kg nai(tl) crystal array surrounded by layers ... | understanding internal backgrounds in nai(tl) crystals toward a 200 kg array for the kims-nai experiment |
over the next decade new μ →e conversion searches at fermilab (mu2e) and j-parc (comet, deeme) are expected to advance limits on charged lepton flavor violation (clfv) by more than four orders of magnitude. by considering the consequence of p and c p on elastic μ →e conversion and the structure of possible charge and c... | nuclear-level effective theory of μ →e conversion: formalism and applications |
we discuss the singlet-doublet fermion dark matter model with c p -violation. in this model, the c p violation generates a pseudoscalar interaction of dark matter with the standard model-higgs boson. thanks to the pseudoscalar interaction, the model can evade the strong constraint from the dark matter direct detection ... | current status and future prospects of the singlet-doublet dark matter model with c p violation |
various types of electroweak-interacting particles, which have non-trivial charges under the su(2) l× u(1) ygauge symmetry, appear in various extensions of the standard model. these particles are good targets of future lepton colliders, such as the international linear collider (ilc), the compact linear collider (clic)... | indirect probe of electroweak-interacting particles at future lepton colliders |
direct detection experiments search for the interactions of dark matter (dm) particles with nuclei in terrestrial detectors. but if these interactions are sufficiently strong, dm particles may scatter in the earth, affecting their distribution in the lab. we present a new analytic calculation of this `earth-scattering'... | signatures of earth-scattering in the direct detection of dark matter |
we calculate the leading radiative corrections to the dark-matter-nucleon scattering in the pseudo-nambu-goldstone dark matter model augmented with a second higgs doublet (s2hdm). in this model, the cross sections for the scattering of the dark-matter on nuclei vanishes at tree-level in the limit of zero momentum-trans... | direct detection of pseudo-nambu-goldstone dark matter in a two higgs doublet plus singlet extension of the sm |
given the fact that the relatively light higgsino mass μ favored in natural supersymmetry usually results in a sizable scattering cross section between the neutralino dark matter and the nucleon, we study the impact of the recently updated direct detection bounds from lux experiment, including both spin independent (si... | strong constraints of lux-2016 results on the natural nmssm |
the annual modulation of scintillation event rate observed by the dama/libra experiment has been a long-standing controversy in the quest of the direct detection of dark matter. the effort to definitively confirm or refute the annual modulation has turned out to be challenging due to the lack of nai(tl) crystals with h... | growth of ultra-high purity nai(tl) crystals for dark matter searches |
we propose a new extension of the standard model by a $u(1)_{b-l}$ gauge symmetry in which the anomalies are canceled by two right-handed neutrinos plus four chiral fermions with fractional b-l charges. two scalar fields that break the b-l symmetry and give masses to the new fermions are also required. after symmetry b... | two-component dark matter and a massless neutrino in a new b-l model |
fermion dark matter (dm) interacting with the standard model through a higgs portal requires non-renormalizable operators, signaling the presence of new mediator states at the electroweak scale. collider signatures that involve the mediators are a powerful tool to experimentally probe the higgs portal interactions, pro... | integrating in the higgs portal to fermion dark matter |
we present a detailed study of a combined singlet-doublet scalar and singlet-doublet fermion model for dark matter. these models have only been studied separately in the past. we show that their combination allows for the radiative generation of neutrino masses, but that it also implies the existence of lepton-flavour ... | a singlet doublet dark matter model with radiative neutrino masses |
in this work we numerically re-examine the loop-induced wimp-nucleon scattering cross section for the simplified dark matter models and the constraint set by the latest direct detection experiment. we consider a fermion, scalar or vector dark matter component from five simplified models with leptophobic spin-0 mediator... | revisiting the direct detection of dark matter in simplified models |
till today, the nature of dark matter (dm) remains elusive despite all our efforts. this missing matter of the universe has not been observed by the already operating dm direct-detection experiments, but we can infer its gravitational effects. galaxies and clusters of galaxies are most likely to contain dm trapped to t... | supramassive dark objects with neutron star origin |
we study the light right-handed slepton bulk regions for dark matter from the generalized minimal supergravity (gmsugra) in the minimal supersymmetric standard model (mssm). in our comprehensive numerical studies, we show that $\mathcal{r_{\tilde{\phi}}}\gtrsim10\%$ is a conservative criteria to formulate bulk region, ... | the right-handed slepton bulk regions for dark matter in the generalized minimal supergravity (gmsugra) |
we propose the optomechanical dark-matter instrument (odin), based on a new method for the direct detection of low-mass dark matter. we consider dark matter interacting with superfluid helium in an optomechanical cavity. using an effective field theory, we calculate the rate at which dark matter scatters off phonons in... | optomechanical dark matter direct detection |
predictivity of many non-thermal dark matter (dm) models is marred by the gravitational production background. this problem is ameliorated in models with lower reheating temperature $t_r$, which allows for dilution of gravitationally produced relics. we study the freeze-in dark matter production mechanism in the therma... | freeze-in at stronger coupling |
the new experiments with spheres-gas (news-g) collaboration intends to achieve sub-gev/c2 weakly interacting massive particles (wimps) detection using spherical proportional counters (spcs). spcs are gaseous detectors relying on ionisation with a single ionization electron energy threshold. the latest generation of spc... | the news-g detector at snolab |
the absence of a breakthrough in directly observing dark matter (dm) through prominent large-scale detectors motivates the development of novel tabletop experiments probing more exotic regions of the parameter space. if dm contains ultralight bosonic particles, they would behave as a classical wave and could manifest t... | helios: the superfluid helium ultralight dark matter detector |
we investigate, for the first time, a scenario where the dark matter consists of three complex scalar fields that are stabilized by a single z7 symmetry. as an extension of the well-known scalar higgs-portal, this z7 model is also subject to important restrictions arising from the relic density constraint and from dire... | the z7 model of three-component scalar dark matter |
the classic bogoliubov theory of weakly interacting bose gases rests upon the assumption that nearly all the bosons condense into the lowest quantum state at sufficiently low temperatures. here we develop a generalized version of bogoliubov theory for the case of a driven-dissipative exciton-polariton condensate with a... | bogoliubov excitations of a polariton condensate in dynamical equilibrium with an incoherent reservoir |
we study a simplified model of top-flavoured dark matter in the framework of dark minimal flavour violation. in this setup the coupling of the dark matter flavour triplet to right-handed up-type quarks constitutes the only new source of flavour and cp violation. the parameter space of the model is restricted by lhc sea... | top-flavoured dark matter in dark minimal flavour violation |
we discuss an interesting class of models, based on strongly coupled dark matter (dm), where sizable effects can be expected in lhc missing energy (met) searches, compatibly with a large separation of scales. in this case, an effective field theory (eft) is appropriate (and sometimes necessary) to describe the most rel... | the last gasp of dark matter effective theory |
the fields of cavity quantum electrodynamics and magnetism have recently merged into cavity spintronics, investigating a quasiparticle that emerges from the strong coupling between standing electromagnetic waves confined in a microwave cavity resonator and the quanta of spin waves, magnons. this phenomenon is now expec... | electromagnetic approach to cavity spintronics |
displaced vertices are relatively unusual signatures for dark matter searches at the lhc. we revisit the model of pseudo-dirac dark matter (pddm), which can accommodate the correct relic density, evade direct detection constraints, and generically provide observable collider signatures in the form of displaced vertices... | displaced vertices from pseudo-dirac dark matter |
a near-future detection of the 21-cm signal from the epoch of reionization will provide unique opportunities to probe the underlying cosmology, provided that such cosmological information can be extracted with precision. to this end, we further develop effective field theory (eft) inspired techniques for the 21-cm brig... | effective bias expansion for 21-cm cosmology in redshift space |
we study a renormalizable scalar singlet dark matter model based on z4 lepton flavor symmetry. a μ τ -philic scalar doublet is introduced as a mediator which connects dark matter and standard model particles. the observed relic abundance of the dark matter is easily maintained while satisfying the current severe constr... | scalar dark matter with a μ τ flavored mediator |
three main strategies are being pursued to search for nongravitational dark matter signals: direct detection, indirect detection and collider searches. interestingly, experiments have reached sensitivities in these three search strategies which may allow detection in the near future. in order to take full benefit of th... | signatures of majorana dark matter with t-channel mediators |
we propose a new extension of the standard model by a u (1 )b-l gauge symmetry in which the anomalies are canceled by two right-handed neutrinos plus four chiral fermions with fractional b -l charges. two scalar fields that break the b -l symmetry and give masses to the new fermions are also required. after symmetry br... | two-component dark matter and a massless neutrino in a new b -l model |
the lack of observation of supersymmetry thus far implies that the weak supersymmetry scale is larger than what was thought before the lhc era. this observation is strengthened by the higgs boson mass measurement at ∼125 gev , which within supersymmetric models implies a large loop correction and a weak supersymmetry s... | stau coannihilation, compressed spectrum, and susy discovery potential at the lhc |
we consider a simple abelian vector dark matter (dm) model, where only the dm (x̃μ) couples non-minimally to the scalar curvature (r̃) of the background spacetime via an operator of the form ~x̃μ x̃μ r̃. by considering the standard freeze-out scenario, we show, it is possible to probe such a non-minimally coupled dm in... | non-minimally coupled vector boson dark matter |
the dense environment of neutron stars makes them an excellent target for probing dark matter interactions with the standard model. we study neutron star heating from capture of inelastic dark matter, which can evade direct detection constraints. we investigate kinematics of the inelastic scattering process between qua... | heating neutron stars with inelastic dark matter and relativistic targets |
with the goal of generating the galactic center gamma-ray excess, we revisit models in which the dark matter interacts with the standard model through the exchange of a new neutral gauge boson, z' . we find several scenarios that can account for this signal, while respecting all existing constraints from colliders and ... | z' mediated dark matter models for the galactic center gamma-ray excess |
the light yield of a small undoped cesium iodide (csi) crystal directly coupled with two silicon photomultipliers (sipms) at about 77 kelvin was measured to be 43.0 ±1.1 photoelectrons (pe) per kev electron-equivalent (kevee) using x and γ -ray peaks from an 241am radioactive source from 18 to 60 kev. the high light yi... | first operation of undoped csi directly coupled with sipms at 77 k |
traditional dark matter models, e.g., weakly interacting massive particles (wimps), assume dark matter (dm) is weakly coupled to the standard model so that elastic scattering between dark matter and baryons can be described perturbatively by the born approximation; most direct detection experiments are analyzed accordi... | resonant scattering between dark matter and baryons: revised direct detection and cmb limits |
an ongoing challenge in dark matter direct detection is to improve the sensitivity to light dark matter in the mev--gev mass range. one proposal is to dope a liquid noble-element direct detection experiment with a lighter element such as hydrogen. this has the advantage of enabling larger recoil energies compared to sc... | exploring light dark matter with the migdal effect in hydrogen-doped liquid xenon |
we propose a new table-top experimental configuration for the direct detection of dark matter qcd axions in the traditional open mass window 10-6 ev ≲ma≲10-2 ev using nonperturbative effects in a system with nontrivial spatial topology. different from most experimental setups found in literature on direct dark matter a... | axion detection via topological casimir effect |
pandax-4t is a ton-scale dark matter direct detection experiment using a dual-phase tpc technique at the china jinping underground laboratory. various ultra-low background technologies have been developed and applied to material screening for pandax-4t, including hpge gamma spectroscopy, icp-ms, naa, radon emanation me... | low radioactive material screening and background control for the pandax-4t experiment |
we perform a likelihood analysis of the constraints from accelerator experiments and astrophysical observations on supersymmetric (susy) models with su(5) boundary conditions on soft susy-breaking parameters at the gut scale. the parameter space of the models studied has seven parameters: a universal gaugino mass m_{1/... | likelihood analysis of supersymmetric su(5) guts |
scalar dark matter (dm) in a theory introduces hierarchy problems, and suffers from the inability to predict the preferred mass range for the dm. in a wimp-like minimal scalar dm setup we show that the infinite derivative theory can predict the dm mass and its coupling. the scale of nonlocality (m) in such a theory in ... | scalar dark matter probes the scale of nonlocality |
we consider direct detection prospects for a class of simplified models of fermionic dark matter (dm) coupled to left and right-handed standard model fermions via two charged scalar mediators with arbitrary mixing angle α. dm interactions with the nucleus are mediated by higher electromagnetic moments, which, for major... | simplified dark matter models with charged mediators: prospects for direct detection |
we introduce the fully-depleted charge-coupled device (ccd) as a particle detector. we demonstrate its low energy threshold operation, capable of detecting ionizing energy depositions in a single pixel down to 50 evee. we present results of energy calibrations from 0.3 kevee to 60 kevee, showing that the ccd is a fully... | damic at snolab |
elastic collisions with relativistic electrons from the blazar's jet can accelerate dark matter (dm) particles in the dm spike surrounding the supermassive black hole at its center. this can allow one to set stringent limits on the dm-electron scattering cross section (σ̅eχ ) for dm masses less than 100 mev. we conside... | blazar boosted dark matter - direct detection constraints on σeχ : role of energy dependent cross sections |
open quantum systems with chiral interactions can be realized by coupling atoms to guided radiation modes in photonic waveguides or optical fibers. in their steady state these systems can feature intricate many-body phases such as entangled dark states, but their detection and characterization remains a challenge. here... | dynamical creation and detection of entangled many-body states in a chiral atom chain |
cosine-100 is a dark matter direct detection experiment designed to test the annual modulation signal observed by the dama/libra experiment. cosine-100 consists of 8 nai(tl) crystals with a total mass of 106 kg, a 2200 l liquid scintillator veto, and 37 muon detector panels. we present details of the data acquisition s... | the cosine-100 data acquisition system |
we explore the implications of third family (t -b -τ ) quasi-yukawa unification (qyu) for collider and dark matter (dm) searches within the framework of a supersymmetric s u (4 )c×s u (2 )l×s u (2 )r model. the deviation from exact yukawa unification is quantified through the relation yt∶yb∶yτ=(1 +c )∶(1 -c )∶(1 +3 c )... | third family quasi-yukawa unification: higgsino dark matter, nlsp gluino, and all that |
light scalar fields, with double well potentials and direct matter couplings, undergo density driven phase transitions, leading to the formation of domain walls. such theories could explain dark energy, dark matter or source the nanohz gravitational-wave background. we describe an experiment that could be used to detec... | detecting dark domain walls |
we propose a pseudo-goldstone boson dark matter (pgdm) particle in s o (10 ) grand unified theory (gut). due to its goldstone nature, this pgdm evades the direct dm detection experiments which, otherwise, severely constrain the parameter space of dm models. in s o (10 ), the pgdm is embedded as a linear combination of ... | pseudo-goldstone dark matter in s o (10 ) |
we introduce a systematic approach to characterize the most general nonrelativistic weakly interacting massive particle (wimp)-nucleus interaction allowed by galilean invariance for a wimp of arbitrary spin jχ in the approximation of one-nucleon currents and for a wimp-nucleon effective potential at most linear in the ... | effective theory of nuclear scattering for a wimp of arbitrary spin |
it is well known that for the pure standard model triplet fermionic wimp-type dark matter (dm), the relic density is satisfied around 2 tev. for such a heavy mass particle, the production cross-section at 13 tev run of lhc will be very small. extending the model further with a singlet fermion and a triplet scalar, dm r... | singlet-triplet fermionic dark matter and lhc phenomenology |
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