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we propose a formalism for the analysis of direct-detection dark-matter searches that covers all coherent responses for scalar and vector interactions and incorporates qcd constraints imposed by chiral symmetry, including all one- and two-body wimp-nucleon interactions up to third order in chiral effective field theory... | analysis strategies for general spin-independent wimp-nucleus scattering |
simplified dark matter models have been recently advocated as a powerful tool to exploit the complementarity between dark matter direct detection, indirect detection and lhc experimental probes. focusing on pseudoscalar mediators between the dark and visible sectors, we show that the simplified dark matter model phenom... | simplified models for dark matter face their consistent completions |
dark matter (dm) simplified models are by now commonly used by the atlas and cms collaborations to interpret searches for missing transverse energy ($e_t^\mathrm{miss}$). 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... | lhc dark matter working group: next-generation spin-0 dark matter models |
by applying pressures up to 42 gpa on the nitrogen-doped lutetium hydride (luh2+xny), we have found a gradual change of color from dark-blue to pink-violet in the pressure region of about 12 to 21 gpa. the temperature dependence of resistivity under pressures up to 50.5 gpa shows progressively optimized metallic behavi... | pressure induced color change and evolution of metallic behavior in nitrogen-doped lutetium hydride |
the similarity between the distributions of spins for galaxies (λgal) and for dark-matter haloes (λhalo), indicated both by simulations and observations, is naively interpreted as a one-to-one correlation between the spins of a galaxy and its host halo. this is used to predict galaxy sizes in semi-analytic models via r... | is the dark-matter halo spin a predictor of galaxy spin and size? |
we study the scenario of dark photon dark matter where the mass is generated through the higgs mechanism rather than the constant stueckelberg mass. in this construction the dark sector contains necessarily extra degrees of freedom and interactions that lead to non-trivial dynamics including thermalization, phase trans... | dark photon dark matter without stueckelberg mass |
the processes of star formation and feedback, regulating the cycle of matter between gas and stars on the scales of giant molecular clouds (gmcs; ~100 pc), play a major role in governing galaxy evolution. measuring the time-scales of gmc evolution is important to identify and characterize the specific physical mechanis... | environmental dependence of the molecular cloud lifecycle in 54 main-sequence galaxies |
we report a search on sub-mev fermionic dark matter absorbed by electrons with an outgoing active neutrino using the 0.63 tonne year exposure collected by the pandax-4t liquid xenon experiment. no significant signals are observed over the expected background. the data are interpreted into limits to the effective coupli... | search for light fermionic dark matter absorption on electrons in pandax-4t |
we report on a novel phenomenon of the resonance effect of primordial density perturbations arisen from a sound speed parameter with an oscillatory behavior, which can generically lead to the formation of primordial black holes in the early universe. for a general inflaton field, it can seed primordial density fluctuat... | primordial black holes from sound speed resonance during inflation |
fuzzy dark matter is an exciting alternative to the standard cold dark matter paradigm, reproducing its large scale predictions, while solving most of the existing tension with small scale observations. these models postulate that dark matter is constituted by light bosons and predict the condensation of a solitonic co... | parasitic black holes: the swallowing of a fuzzy dark matter soliton |
in light of the excess in the low-energy electron recoil events reported by xenon1t, many new physics scenarios have been proposed as a possible origin of the excess. one possible explanation is that the excess is a result of a fast moving dark matter (dm), with velocity v ∼ 0.05-0.20 and mass between 1 mev and 10 gev,... | collider constraints on a dark matter interpretation of the xenon1t excess |
we report the discovery of a remarkable concentration of massive galaxies with extended x-ray emission at z spec = 2.506, which contains 11 massive (m * ≳ 1011 m ⊙) galaxies in the central 80 kpc region (11.6σ overdensity). we have spectroscopically confirmed 17 member galaxies with 11 from co and the remaining ones fr... | discovery of a galaxy cluster with a violently starbursting core at z = 2.506 |
light dark matter is a compelling experimental target in light of stringent constraints on heavier wimps. however, for a sub-mev wimp, the universe is sufficiently well understood at temperatures below 10 mev that there is no room for it to be a thermal relic. avoiding thermalization is itself a strong constraint with ... | the cosmology of sub-mev dark matter |
the possibility that part of the dark matter is made of massive compact halo objects (machos) remains poorly constrained over a wide range of masses, and especially in the 20 - 100 m⊙ window. we show that strong gravitational lensing of extragalactic fast radio bursts (frbs) by machos of masses larger than ∼20 m⊙ would... | lensing of fast radio bursts as a probe of compact dark matter |
elastic neutrino-electron scattering represents a powerful tool to investigate key neutrino properties. in view of the recent results released by the lux-zeplin collaboration, we provide a first determination of the limits achievable on the neutrino magnetic moment and neutrino millicharge, whose effect becomes non-neg... | new constraint on neutrino magnetic moment and neutrino millicharge from lux-zeplin dark matter search results |
we consider a cosmological model in which a fraction fdcdm of the dark matter (dm) is allowed to decay in an invisible relativistic component, and compute the resulting constraints on both the decay width (or inverse lifetime) γdcdm and fdcdm from purely gravitational arguments. we report a full derivation of the boltz... | a fresh look at linear cosmological constraints on a decaying dark matter component |
the electroweak (ew) sector of the minimal supersymmetric standard model (mssm) can account for a variety of experimental data. in particular it can explain the persistent 3 -4 σ discrepancy between the experimental result for the anomalous magnetic moment of the muon, (g-2 ) μ, and its standard model (sm) prediction. ... | improved (g-2 ) μ measurements and wino/higgsino dark matter |
axions are a promising cold dark matter candidate. haloscopes, which use the conversion of axions to photons in the presence of a magnetic field to detect axions, are the basis of microwave cavity searches such as the axion dark matter experiment (admx). to search for lighter, low frequency axions in the sub- 2 ×10-7 e... | admx slic: results from a superconducting lc circuit investigating cold axions |
in many cosmological inference problems, the likelihood (the probability of the observed data as a function of the unknown parameters) is unknown or intractable. this necessitates approximations and assumptions, which can lead to incorrect inference of cosmological parameters, including the nature of dark matter and da... | likelihood-free inference with neural compression of des sv weak lensing map statistics |
the excess of γ rays in the data measured by the fermi large area telescope from the galactic center region is one of the most intriguing mysteries in astroparticle physics. this "galactic center excess" (gce) has been measured with respect to different interstellar emission models (iems), source catalogs, data selecti... | characteristics of the galactic center excess measured with 11 years of f e r m i -lat data |
vera c. rubin observatory is a ground-based astronomical facility under construction, a joint project of the national science foundation and the u.s. department of energy, designed to conduct a multipurpose 10 yr optical survey of the southern hemisphere sky: the legacy survey of space and time. significant flexibility... | optimization of the observing cadence for the rubin observatory legacy survey of space and time: a pioneering process of community-focused experimental design |
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 |
numerous theories extending beyond the standard model of particle physics predict the existence of bosons that could constitute dark matter. in the standard halo model of galactic dark matter, the velocity distribution of the bosonic dark matter field defines a characteristic coherence time τc. until recently, laborato... | stochastic fluctuations of bosonic dark matter |
after about two decades of the first observational papers confirming the accelerated expansion of the universe, we are still facing the question whether the cause of it is a rigid cosmological constant λ-term or a mildly evolving dynamical dark energy (dde). while studies focusing mainly on cmb measurements do not perc... | dynamical dark energy vs. λ = const in light of observations |
neutrino emission in coincidence with gamma rays has been observed from the blazar txs 0506 +056 by the icecube telescope. neutrinos from the blazar had to pass through a dense spike of dark matter (dm) surrounding the central black hole. the observation of such a neutrino implies new upper bounds on the neutrino-dm sc... | blazar constraints on neutrino-dark matter scattering |
the particle that makes up the dark matter of the universe could be an axion or axionlike particle. a collection of axions can condense into a bound bose-einstein condensate called an axion star. it is possible that a significant fraction of the axion dark matter is in the form of axion stars. this would make some effo... | colloquium: the physics of axion stars |
future observations of cosmic microwave background (cmb) polarisation have the potential to answer some of the most fundamental questions of modern physics and cosmology, including: what physical process gave birth to the universe we see today? what are the dark matter and dark energy that seem to constitute 95% of the... | exploring cosmic origins with core: survey requirements and mission design |
the detection of coherent neutrino-nucleus scattering by the coherent collaboration has set on quantitative grounds the existence of an irreducible neutrino background in direct detection searches of weakly interacting massive dark matter candidates. this background leads to an ultimate discovery limit for these experi... | neutrino discovery limit of dark matter direct detection experiments in the presence of non-standard interactions |
in a mirror twin world with a maximally symmetric higgs sector the little hierarchy of the standard model can be significantly mitigated, perhaps displacing the cutoff scale above the lhc reach. we show that consistency with observations requires that the z 2 parity exchanging the standard model with its mirror be brok... | minimal mirror twin higgs |
we study a gauge b- l extension of the standard model of quarks and leptons with unconventional charges for the singlet right-handed neutrinos, and extra singlet scalars, such that a residual z3 symmetry remains after the spontaneous breaking of b- l. we discuss the phenomenological consequences of this scenario, inclu... | gauge b- l model with residual z3 symmetry |
we introduce a set of minimal simplified models for dark matter interactions with the standard model, connecting the two sectors via either a scalar or pseudoscalar particle. these models have a wider regime of validity for dark matter searches at the lhc than the effective field theory approach, while still allowing s... | scalar simplified models for dark matter |
we discover that chiral symmetry does not act as an infrared attractor of the renormalization group flow under the impact of quantum gravity fluctuations. thus, observationally viable quantum gravity models must respect chiral symmetry. in our truncation, asymptotically safe gravity does, as a chiral fixed point exists... | quantum gravity and standard-model-like fermions |
we study the baryonic tully-fisher relation (btfr) at z ≃ 0 using 153 galaxies from the spitzer photometry and accurate rotation curve sample. we consider different definitions of the characteristic velocity from h i and h α rotation curves, as well as h i line-widths from single-dish observations. we reach the followi... | the baryonic tully-fisher relation for different velocity definitions and implications for galaxy angular momentum |
anais (annual modulation with nai scintillators) is a dark matter direct detection experiment consisting of 112.5 kg of nai(tl) detectors in operation at the canfranc underground laboratory (lsc), in spain, since august 2017. anais' goal is to confirm or refute in a model independent way the dama/libra positive result:... | annual modulation results from three-year exposure of anais-112 |
we present a common chiral power-counting scheme for vector, axial-vector, scalar, and pseudoscalar wimp-nucleon interactions, and derive all one- and two-body currents up to third order in the chiral expansion. matching our amplitudes to non-relativistic effective field theory, we find that chiral symmetry predicts a ... | chiral power counting of one- and two-body currents in direct detection of dark matter |
the singlet-doublet model of dark matter is a minimal extension of the standard model with dark matter that is a mixture of a singlet and a non-chiral pair of electroweak doublet fermions. the stability of dark matter is ensured by the typical parity symmetry, and, similar to a `bino-higgsino' system, the extra matter ... | singlet-doublet model: dark matter searches and lhc constraints |
we propose to relate dark matter stability to the possible dirac nature of neutrinos. the idea is illustrated in a simple scheme where small dirac neutrino masses arise from a type-i seesaw mechanism as a result of a z4 discrete lepton number symmetry. the latter implies the existence of a viable wimp dark matter candi... | dirac neutrinos and dark matter stability from lepton quarticity |
dark matter scattering off a nucleus has a small probability of inducing an observable ionization through the inelastic excitation of an electron, called the migdal effect. we use an effective field theory to extend the computation of the migdal effect in semiconductors to regions of small momentum transfer to the nucl... | the migdal effect in semiconductors for dark matter with masses below ∼ 100 mev |
higgsino in supersymmetric standard models is known to be a promising candidate for dark matter in the universe. its phenomenological property is strongly affected by the gaugino fraction in the higgsino-like state. if this is sizable, in other words, if gaugino masses are less than o (10) tev, we may probe the higgsin... | higgsino dark matter or not: role of disappearing track searches at the lhc and future colliders |
the existence of millicharged dark matter (mdm) can leave a measurable imprint on 21-cm cosmology through mdm-baryon scattering. however, the minimal scenario is severely constrained by existing cosmological bounds on both the fraction of dark matter that can be millicharged and the mass of mdm particles. we point out ... | reviving millicharged dark matter for 21-cm cosmology |
several new physics scenarios, motivated e.g. by dark matter, feature new electroweakly charged states where the lightest particle in the multiplet is stable and neutral. in such cases direct searches at lhc are notoriously difficult, while electroweak precision tests both at hadron and lepton colliders offer the possi... | probing new electroweak states via precision measurements at the lhc and future colliders |
we present a novel scenario in which light (~few ev) dark fermions (sterile neutrinos) interact with a scalar field as in mass-varying neutrino dark energy theories. as the ev sterile states naturally become nonrelativistic before the matter-radiation equality (mre), we show that the neutrino-scalar fluid develops stro... | early mass-varying neutrino dark energy: nugget formation and hubble anomaly |
we experimentally demonstrate time-resolved exciton propagation in a monolayer semiconductor at cryogenic temperatures. monitoring phonon-assisted recombination of dark states, we find a highly unusual case of exciton diffusion. while at 5 k the diffusivity is intrinsically limited by acoustic phonon scattering, we obs... | nonclassical exciton diffusion in monolayer wse2 |
we study regions in the parameter space of the nmssm which are able to simultaneously explain the current measured values for the w mass mw and the muon anomalous magnetic moment aμ, and provide a dark matter relic density consistent with the observations as well as constraints from detection experiments. the correspon... | mw, dark matter and aμ in the nmssm |
we perform an improved cosmic microwave background (cmb) analysis to search for dark matter-proton scattering with a momentum-transfer cross section of the form σ0vn for n =-2 and n =-4 . in particular, we present a new and robust prescription for incorporating the relative bulk velocity between the dark matter and bar... | critical assessment of cmb limits on dark matter-baryon scattering: new treatment of the relative bulk velocity |
the supercdms experiment is designed to directly detect weakly interacting massive particles (wimps) that may constitute the dark matter in our galaxy. during its operation at the soudan underground laboratory, germanium detectors were run in the cdmslite mode to gather data sets with sensitivity specifically for wimps... | low-mass dark matter search with cdmslite |
ultralight axionlike particles are well-motivated dark matter candidates that are the target of numerous direct detection efforts. in the vicinity of the solar system, such particles can be treated as oscillating scalar fields. the velocity dispersion of the milky way determines a coherence time of about 106 oscillatio... | stochastic properties of ultralight scalar field gradients |
neutron stars close to the galactic center are expected to swim in a dense background of dark matter. for models in which the dark matter has efficient interactions with neutrons, they are expected to accumulate their own local cloud of dark matter, making them appealing targets for observations seeking signs of dark m... | bounds on long-lived dark matter mediators from neutron stars |
cosmological neutrinos have their greatest influence in voids: these are the regions with the highest neutrino to dark matter density ratios. the marked power spectrum can be used to emphasize low-density regions over high-density regions and, therefore, is potentially much more sensitive than the power spectrum to the... | using the marked power spectrum to detect the signature of neutrinos in large-scale structure |
we report the search results of light dark matter through its interactions with shell electrons and nuclei, using the commissioning data from the pandax-4t liquid xenon detector. low energy events are selected to have an ionization-only signal between 60 to 200 photoelectrons, corresponding to a mean nuclear recoil ene... | search for light dark matter with ionization signals in the pandax-4t experiment |
the high optical and chemical activity of nanoparticles (nps) signifies the possibility of converting the spin angular momenta of photons into structural changes in matter. here, we demonstrate that illumination of dispersions of racemic cdte nps with right- (left-)handed circularly polarized light (cpl) induces the fo... | chiral templating of self-assembling nanostructures by circularly polarized light |
we present a general classification of simplified models that lead to dark matter (dm) coannihilation processes of the form dm + x → sm1 + sm2, where x is a coannihilation partner for the dm particle and sm1, sm2 are standard model fields. our classification also encompasses regular dm pair annihilation scenarios if dm... | the coannihilation codex |
the standard model (sm) has been extensively tested and confirmed since its inception in the 1970s, with the discovery of the higgs boson in 2012 as its ultimate affirmation as the prevailing theory of particle physics. nonetheless, it is widely accepted that the sm cannot be the fundamental theory at all energies. for... | hints of lepton flavor universality violations |
according to lcdm theory, hierarchical evolution occurs on all mass scales, implying that satellites of the milky way should also have companions. the recent discovery of ultra-faint dwarf galaxy candidates in close proximity to the magellanic clouds provides an opportunity to test this theory. we present proper motion... | the missing satellites of the magellanic clouds? gaia proper motions of the recently discovered ultra-faint galaxies |
we revisit the non-thermal dark matter (dm) production during the thermalization and reheating era after inflation. the decay of inflaton produces high-energy particles that are thermalized to complete the reheating of the universe. before the thermalization is completed, dm can be produced from a collision between the... | dark matter production during the thermalization era |
we detect a line at 3.539 ±0.011 kev in the deep exposure data set of the galactic center region, observed with the x-ray multi-mirror mission newton. the dark matter interpretation of the signal observed in the perseus galaxy cluster, the andromeda galaxy [a. boyarsky et al., phys. rev. lett. 113, 251301 (2014)], and ... | checking the dark matter origin of a 3.53 kev line with the milky way center |
neutrino non-standard interactions (nsi) with the first generation of standard model fermions can span a parameter space of large dimension and exhibit degeneracies that cannot be broken by a single class of experiment. oscillation experiments, together with neutrino scattering experiments, can merge their observations... | a global analysis strategy to resolve neutrino nsi degeneracies with scattering and oscillation data |
we discuss the emergence of non-stationarity in open quantum many-body systems. this leads us to the definition of dissipative time crystals which display experimentally observable, persistent, time-periodic oscillations induced by noisy contact with an environment. we use the loschmidt echo and local observables to in... | non-stationarity and dissipative time crystals: spectral properties and finite-size effects |
teleparallel based cosmological models provide a description of gravity in which torsion is the mediator of gravitation. several extensions have been made within the so-called teleparallel equivalent of general relativity which is equivalent to general relativity at the level of the equations of motion where attempts a... | dynamical systems analysis in f (t ,ϕ ) gravity |
in this note we report on the development plans and first results of the grenoble axion haloscope (grahal) project. it is aimed at developing a haloscope platform dedicated to the search for axion dark matter particles. we discuss its general framework and the plans to reach the sensitivity required to probe well known... | the grenoble axion haloscope platform (grahal): development plan and first results |
rotation curve measurements from the 1970s provided the first strong indication that a significant fraction of matter in the universe is non-baryonic. in the intervening years, a tremendous amount of progress has been made on both the theoretical and experimental fronts in the search for this missing matter, which we n... | lectures on dark matter physics |
strong-lensing time delays enable the measurement of the hubble constant (h0) independently of other traditional methods. the main limitation to the precision of time-delay cosmography is mass-sheet degeneracy (msd). some of the previous tdcosmo analyses broke the msd by making standard assumptions about the mass densi... | tdcosmo. xii. improved hubble constant measurement from lensing time delays using spatially resolved stellar kinematics of the lens galaxy |
the atlas and cms experiments at the lhc have found significant excess in the diphoton invariant mass distribution near 750 gev. we interpret this excess in a predictive nonsupersymmetric su(5) grand unified framework with a singlet scalar and light adjoint fermions. the 750 gev resonance is identified as a gauge singl... | interpreting 750 gev diphoton excess in su(5) grand unified theory |
this article describes babyiaxo, an intermediate experimental stage of the international axion observatory (iaxo), proposed to be sited at desy. iaxo is a large-scale axion helioscope that will look for axions and axion-like particles (alps), produced in the sun, with unprecedented sensitivity. babyiaxo is conceived to... | conceptual design of babyiaxo, the intermediate stage towards the international axion observatory |
we investigate the dark matter phenomenology of a dirac fermion together with kinetic mixing in the context of an lμ -lτ model. we analyze which part of the parameter space can provide a viable dark matter candidate and explain the b-decay anomaly, while obeying current data. although the allowed region of parameter sp... | the dark lμ - lτ rises via kinetic mixing |
an excess in the electronic recoil data was observed in the xenon1t detector. one of plausible explanations for the excess is absorption of a vector bosonic particle with the mass of 2 - 3kev. for this, the kinetic mixing κ ∼10-15 of the dark photon with the photon is required if the dark photon explains the current dm... | xenon1t anomaly and its implication for decaying warm dark matter |
the co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. the cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic nuclei (agn) with long duty cycles. outflows from the central engine tightl... | feedback from active galactic nuclei in galaxy groups |
a global network of optical atomic clocks will enable unprecedented measurement precision in fields including tests of fundamental physics, dark matter searches, geodesy, and navigation. free-space laser links through the turbulent atmosphere are needed to fully exploit this global network, by enabling comparisons to a... | ultrastable free-space laser links for a global network of optical atomic clocks |
this document is one of a series of white papers from the usqcd collaboration. here, we discuss opportunities for lattice quantum chromodynamics (lqcd) in the research frontier in fundamental symmetries and signals for new physics. lqcd, in synergy with effective field theories and nuclear many-body studies, provides t... | the role of lattice qcd in searches for violations of fundamental symmetries and signals for new physics |
we explore the parameter space of the phenomenological minimal supersymmetric standard model with a light neutralino thermal dark matter (mχ∼1 0≤mh/2 ) that is consistent with current collider and astrophysical constraints. we consider both positive and negative values of the higgsino mass parameter (μ ). our investiga... | is light neutralino thermal dark matter in the phenomenological minimal supersymmetric standard model ruled out? |
we present a new framework to study the time variation of fundamental constants in a model-independent way. model independence implies more free parameters than assumed in previous studies. using data from atomic clocks based on 87sr, 171yb+ and 133cs, we set bounds on parameters controlling the variation of the fine-s... | analysis of atomic-clock data to constrain variations of fundamental constants |
we use a science-grade skipper charge-coupled device (skipper ccd) operating in a low-radiation background environment to develop a semiempirical model that characterizes the origin of single-electron events in ccds. we identify, separate, and quantify three independent contributions to the single-electron events, whic... | sensei: characterization of single-electron events using a skipper charge-coupled device |
we study an extension of the minimal gauged lμ-lτ model including three right-handed singlet fermions and a scalar doublet to explain the anomalous magnetic moments of muon and electron simultaneously. the presence of an in-built z2 symmetry under which the right-handed singlet fermions and η are odd, gives rise to a s... | lepton anomalous magnetic moment with singlet-doublet fermion dark matter in a scotogenic u (1 )lμ-lτ model |
we present benchmarks for the inert doublet model, a two higgs doublet model with a dark matter candidate. they are consistent with current constraints on direct detection, including the most recent bounds from the xenon1t experiment and relic density of dark matter, as well as with known collider and low-energy limits... | benchmarking the inert doublet model for e + e - colliders |
we present a semi-analytic, physically motivated model for dark matter halo concentration as a function of halo mass and redshift. the semi-analytic model combines an analytic model for the halo mass accretion history (mah), based on extended press-schechter (eps) theory, with an empirical relation between concentratio... | the accretion history of dark matter haloes - iii. a physical model for the concentration-mass relation |
in this review we consider in detail different theoretical topics associated with interaction in the dark sector. we study linear and nonlinear interactions which depend on the dark matter and dark energy densities. we consider a number of different models (including the holographic dark energy and dark energy in a fra... | cosmological evolution with interaction between dark energy and dark matter |
in recent years, direct detection, indirect detection, and collider experiments have placed increasingly stringent constraints on particle dark matter, exploring much of the parameter space associated with the wimp paradigm. in this paper, we focus on the subset of wimp models in which the dark matter annihilates in th... | toward (finally!) ruling out z and higgs mediated dark matter models |
we study discovery prospects for a real triplet extension of the standard model scalar sector at the large hadron collider (lhc) and a possible future 100 tev pp collider. we focus on the scenario in which the neutral triplet scalar is stable and contributes to the dark matter relic density. when produced in pp collisi... | collider probes of real triplet scalar dark matter |
primordial black holes are produced in a minimal uv extension to the higgs inflation with an included r2 term. we show that for parameters consistent with standard model measurements and planck observation results lead to mpbh in (10-16, 10-15) msolar primordial black holes with significant abundance, which may consist... | primordial black holes in higgs-r2 inflation as the whole of dark matter |
gamma-ray searches for dark matter annihilation and decay in dwarf galaxies rely on an understanding of the dark matter density profiles of these systems. conversely, uncertainties in these density profiles propagate into the derived particle physics limits as systematic errors. in this paper we quantify the expected d... | dwarf galaxy annihilation and decay emission profiles for dark matter experiments |
we propose using high-purity lab-grown diamond crystal for the detection of sub-giga electron volt dark matter. diamond targets can be sensitive to both nuclear and electron recoils from dark matter scattering in the mega-electron-volt and above mass range as well as to absorption processes of dark matter with masses b... | diamond detectors for direct detection of sub-gev dark matter |
we demonstrate that massive fields, such as dark matter, can directly produce a cosmological evolution of the fundamental constants of nature. we show that a scalar or pseudoscalar (axionlike) dark matter field ϕ , which forms a coherently oscillating classical field and interacts with standard model particles via quad... | can dark matter induce cosmological evolution of the fundamental constants of nature? |
delayed single- and few-electron emissions plague dual-phase time projection chambers, limiting their potential to search for light-mass dark matter. this paper examines the origins of these events in the xenon1t experiment. characterization of the intensity of delayed electron backgrounds shows that the resulting emis... | emission of single and few electrons in xenon1t and limits on light dark matter |
we present the cosmology and astrophysics with machine learning simulations (camels) multifield data set (cmd), a collection of hundreds of thousands of 2d maps and 3d grids containing many different properties of cosmic gas, dark matter, and stars from more than 2000 distinct simulated universes at several cosmic time... | the camels multifield data set: learning the universe's fundamental parameters with artificial intelligence |
we present photoluminescence measurements in monolayer wse2, which point to the importance of the interaction between charged particles and excitonic complexes. the theoretical analysis highlights the key role played by exchange scattering, referring to cases wherein the particle composition of the complex changes afte... | relaxation and darkening of excitonic complexes in electrostatically doped monolayer wse2: roles of exciton-electron and trion-electron interactions |
aims: understanding the link between the galaxy properties and the dark matter halos they reside in and their coevolution is a powerful tool for constraining the processes related to galaxy formation. in particular, the stellar-to-halo mass relation (shmr) and its evolution throughout the history of the universe provid... | the stellar-to-halo mass relation over the past 12 gyr. i. standard λcdm model |
several interesting dark matter (dm) models invoke a dark sector leading to two types of relic particles, possibly interacting with each other: non-relativistic dm, and relativistic dark radiation (dr) . these models have interesting consequences for cosmological observables, and could in principle solve problems like ... | constraining dark matter-dark radiation interactions with cmb, bao, and lyman-α |
we use the arecibo legacy fast alfa (alfalfa) 21 cm survey to measure the number density of galaxies as a function of their rotational velocity, vrot,hi (as inferred from the width of their 21 cm emission line). based on the measured velocity function we statistically connect galaxies with their host halo, via abundanc... | is there a "too big to fail" problem in the field? |
we extend the standard model with an ew fermion triplet, stable thanks to one of the accidental symmetries already present in the theory. on top of being a potential dark matter candidate, additional motivations for this new state are the stability of the vacuum, the fact it does not introduce a large fine-tuning in th... | erratum: erratum to: wino-like minimal dark matter and future colliders |
light emission from higher-order correlated excitonic states has been recently reported in hbn-encapsulated monolayer wse2 and ws2 upon optical excitation. these exciton complexes are found to be bound states of excitons residing in opposite valleys in momentum space, a promising feature that could be employed in valle... | electroluminescence from multi-particle exciton complexes in transition metal dichalcogenide semiconductors |
a series of experiments studying neutrinos from intense radioactive sources have reported a deficit in the measured event rate which, in combination, has reached a statistical significance of ∼ 5σ. in this paper, we explore avenues for explaining this anomaly, both within the standard model and beyond. first, we discus... | towards resolving the gallium anomaly |
motivated by the recent measurement of muon anomalous magnetic moment at fermilab, the rapid progress of the lhc search for supersymmetry, and the significantly improved sensitivities of dark matter direct detection experiments, we studied their impacts on the minimal supersymmetric standard model (mssm). we conclude t... | impact of the recent measurement of (g -2 )μ , the lhc search for supersymmetry, and the lz experiment on the minimal supersymmetric standard model |
these lecture notes on the particle physics and astrophysics of dark matter (dm) were delivered at tasi 2022 ``ten years after the higgs discovery: particle physics now and future." the focus of these lecture notes, aimed at the level of advanced graduate students and beginning postdocs, is on indirect (i.e., astrophys... | tasi lectures on the particle physics and astrophysics of dark matter |
nonlinearity is a powerful determinant of physical systems. controlling nonlinearity leads to interesting states of matter and new applications. in optics, diverse families of continuous and discrete states arise from balance of nonlinearity and group-velocity dispersion (gvd). moreover, the dichotomy of states with lo... | a continuum of bright and dark-pulse states in a photonic-crystal resonator |
we present new h i interferometric observations of the gas-rich ultra-diffuse galaxy agc 114905, which previous work, based on low-resolution data, identified as an outlier of the baryonic tully-fisher relation. the new observations, at a spatial resolution ~2.5 times higher than before, reveal a regular h i disc rotat... | no need for dark matter: resolved kinematics of the ultra-diffuse galaxy agc 114905 |
we propose a model with radiatively induced neutrino mass at two-loop level, applying modular a4 symmetry. the neutrino mass matrix is formulated where the structure of associated couplings is restricted by the symmetry. then we show several predictions in the lepton sector, satisfying lepton flavor violations as well ... | a two loop induced neutrino mass model with modular a4 symmetry |
recently the experiment to detect the global epoch of reionization signature reported the detection of a 21 cm absorption signal stronger than astrophysical expectations. in this paper we study the impact of radiation from dark matter (dm) decay and primordial black holes (pbhs) on the 21 cm radiation temperature in th... | 21 cm limits on decaying dark matter and primordial black holes |
we propose a low-cost and movable setup to probe minicharged particles using high-intensity proton fixed-target facilities. this proposal, fermini, consists of a scintillator-based detector, requiring multicoincident scintillation signatures within a small time window, located downstream of the proton target of a neutr... | proton fixed-target scintillation experiment to search for millicharged dark matter |
a study of the group properties of galaxies in our immediate neighborhood provides a singular opportunity to observationally constrain the halo mass function, a fundamental characterization of galaxy formation. detailed studies of individual groups have provided the coefficients of scaling relations between a proxy for... | galaxy groups within 3500 km s-1 |
several bright and massive galaxy candidates at high redshifts have been recently observed by the james webb space telescope. such early massive galaxies seem difficult to reconcile with standard λ cold dark matter model predictions. we discuss under which circumstances such observed massive galaxy candidates can be ex... | high-redshift jwst observations and primordial non-gaussianity |
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