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the cast-capp axion haloscope, operating at cern inside the cast dipole magnet, has searched for axions in the 19.74 μev to 22.47 μev mass range. the detection concept follows the sikivie haloscope principle, where dark matter axions convert into photons within a resonator immersed in a magnetic field. the cast-capp re... | search for dark matter axions with cast-capp |
we present new spectroscopic observations of the diffuse milky way satellite galaxies antlia 2 and crater 2, taken as part of the southern stellar stream spectroscopic survey (s5). the new observations approximately double the number of confirmed member stars in each galaxy and more than double the spatial extent of sp... | kinematics of antlia 2 and crater 2 from the southern stellar stream spectroscopic survey (s5) |
the next generation of axion direct-detection experiments may rule out or confirm axions as the dominant source of dark matter. we develop a general likelihood-based framework for studying the time-series data at such experiments, with a focus on the role of dark matter astrophysics, to search for signatures of the qcd... | revealing the dark matter halo with axion direct detection |
the abundance of galaxy clusters can constrain both the geometry and growth of structure in our universe. however, this probe could be significantly complicated by recent claims of non-universality-non-trivial dependences with respect to the cosmological model and redshift. in this work, we analyse the dependence of th... | the universality of the virial halo mass function and models for non-universality of other halo definitions |
we study the atomic physics and the astrophysical implications of a model in which the dark matter is the analog of hydrogen in a secluded sector. the self-interactions between dark matter particles include both elastic scatterings as well as inelastic processes due to a hyperfine transition. the self-interaction cross... | hidden sector hydrogen as dark matter: small-scale structure formation predictions and the importance of hyperfine interactions |
mimetic gravity is a weyl-symmetric extension of general relativity, related to the latter by a singular disformal transformation, wherein the appearance of a dust-like perfect fluid can mimic cold dark matter at a cosmological level. within this framework, it is possible to provide an unified geometrical explanation f... | mimetic gravity: a review of recent developments and applications to cosmology and astrophysics |
ultralight bosons such as axion-like particles are viable candidates for dark matter. they can form stable, macroscopic field configurations in the form of topological defects that could concentrate the dark matter density into many distinct, compact spatial regions that are small compared with the galaxy but much larg... | search for topological defect dark matter with a global network of optical magnetometers |
the emerging field of quantum acoustics explores interactions between acoustic waves and artificial atoms and their applications in quantum information processing. in this experimental study, we demonstrate the coupling between a surface acoustic wave (saw) and an electron spin in diamond by taking advantage of the str... | coupling a surface acoustic wave to an electron spin in diamond via a dark state |
we analyse the anisotropic clustering of the baryon oscillation spectroscopic survey cmass data release 11 sample, which consists of 690 827 galaxies in the redshift range 0.43 < z < 0.70 and has a sky coverage of 8498 deg2 corresponding to an effective volume of ∼ 6 gpc3. we fit the fourier space statistics, the... | the power spectrum and bispectrum of sdss dr11 boss galaxies - i. bias and gravity |
we investigate a model with local u(1 ) b -l and discrete z2 symmetries where two types of weak isospin singlet neutrinos, vectorlike charged leptons, and exotic scalar fields are introduced. the linear seesaw mechanism is induced at the one-loop level through yukawa interactions associated with the standard model lept... | generation of a radiative neutrino mass in the linear seesaw framework, charged lepton flavor violation, and dark matter |
this paper proposes a new search program for dark sector parton showers at the large hadron collider (lhc). these signatures arise in theories characterized by strong dynamics in a hidden sector, such as hidden valley models. a dark parton shower can be composed of both invisible dark matter particles as well as dark s... | lhc searches for dark sector showers |
we investigate the possibility whether the tensions with sm expectations observed in several b → sℓℓ transitions, including hints for lepton flavour non-universality, could be due to the decay of b into a new light resonance. we find that qualitative agreement with the data can be obtained with a light vector resonance... | a new light particle in b decays? |
fuzzy dark matter (fdm) represents an alternative and intriguing description of the standard cold dark matter fluid, which is able to explain the lack of direct detection of dark matter particles in the gev sector and to alleviate small-scale tensions in the cosmic large-scale structure formation. cosmological simulati... | lyman α forest and non-linear structure characterization in fuzzy dark matter cosmologies |
critical probes of dark matter come from tests of its elastic scattering with nuclei. the results are typically assumed to be model independent, meaning that the form of the potential need not be specified and that the cross sections on different nuclear targets can be simply related to the cross section on nucleons. f... | not as big as a barn: upper bounds on dark matter-nucleus cross sections |
higgs-portal effective field theories are widely used as benchmarks in order to interpret collider and astroparticle searches for dark matter (dm) particles. to assess the validity of these effective models, it is important to confront them to concrete realizations that are complete in the ultraviolet regime. in this p... | the higgs-portal for dark matter: effective field theories versus concrete realizations |
we present a 6d map of the orphan-chenab (oc) stream by combining the data from southern stellar stream spectroscopic survey (s5) and gaia. we reconstruct the proper motion, radial velocity, distance, on-sky track, and stellar density along the stream with spline models. the stream has a total luminosity of mv = -8.2 a... | s 5: probing the milky way and magellanic clouds potentials with the 6d map of the orphan-chenab stream |
we present the calibration of the dark energy survey year 3 (des y3) weak lensing (wl) source galaxy redshift distributions n(z) from clustering measurements. in particular, we cross-correlate the wl source galaxies sample with redmagic galaxies (luminous red galaxies with secure photometric redshifts) and a spectrosco... | dark energy survey year 3 results: clustering redshifts - calibration of the weak lensing source redshift distributions with redmagic and boss/eboss |
we show that the commonly adopted hot dark matter bound on the axion mass ma≲1 ev is not reliable, since it is obtained by extrapolating the chiral expansion in a region where the effective field theory breaks down. this is explicitly shown via the calculation of the axion-pion thermalization rate at the next-to-leadin... | breakdown of chiral perturbation theory for the axion hot dark matter bound |
we consider extensions of the standard model in which a spontaneously broken global chiral peccei-quinn (pq) symmetry arises as an accidental symmetry of an exact zn symmetry. for n =9 or 10, this symmetry can protect the accion—the nambu-goldstone boson arising from the spontaneous breaking of the accidental pq symmet... | axion dark matter in the post-inflationary peccei-quinn symmetry breaking scenario |
the milky way and andromeda galaxies are each surrounded by a thin plane of satellite dwarf galaxies that may be corotating. cosmological simulations predict that most satellite galaxy systems are close to isotropic with random motions, so those two well-studied systems are often interpreted as rare statistical outlier... | a whirling plane of satellite galaxies around centaurus a challenges cold dark matter cosmology |
the identity of dark matter is being sought with increasingly sensitive and voluminous underground detectors. recently the xenon1t collaboration reported excess electronic recoil events, with most of these having recoil energies around 1-30 kev. we show that a straightforward model of inelastic dark matter produced via... | electric but not eclectic: thermal relic dark matter for the xenon1t excess |
we show that each of the three dainotti-correlated gamma-ray burst (grb) data sets recently compiled by wang et al. and hu et al., that together probe the redshift range 0.35 ≤ z ≤ 5.91, obey cosmological-model-independent dainotti correlations and so are standardizable. we use these grb data in conjunction with the be... | standardizing dainotti-correlated gamma-ray bursts, and using them with standardized amati-correlated gamma-ray bursts to constrain cosmological model parameters |
the advances in topological condensed matter physics enable the manipulation of classic waves in different ways, such as unidirectional propagation featuring the suppression of backscattering and the robustness against impurities and disorder, making it possible to endow classical phenomena with topological properties.... | robust fano resonance in a topological mechanical beam |
basic idea of this analysis is to achieve a two-component dark matter (dm) framework composed of a scalar and a fermion, with non-negligible dm-dm interaction contributing to thermal freeze out (hence relic density), but hiding them from direct detection bounds. we therefore augment the standard model (sm) with a scala... | multipartite dark matter with scalars, fermions and signatures at lhc |
the large underground xenon (lux) experiment is a dual-phase liquid xenon time projection chamber (tpc) operating at the sanford underground research facility in lead, south dakota. a calibration of nuclear recoils in liquid xenon was performed $\textit{in situ}$ in the lux detector using a collimated beam of mono-ener... | low-energy (0.7-74 kev) nuclear recoil calibration of the lux dark matter experiment using d-d neutron scattering kinematics |
we use a large sample of isolated dark matter halo pairs drawn from cosmological n-body simulations to identify candidate systems whose kinematics match that of the local group (lg) of galaxies. we find, in agreement with the `timing argument' and earlier work, that the separation and approach velocity of the milky way... | the apostle project: local group kinematic mass constraints and simulation candidate selection |
we analyze a simple extension of the standard model (sm) with a dark sector composed of a scalar and a fermion, both singlets under the sm gauge group but charged under a dark sector symmetry group. sterile neutrinos, which are singlets under both groups, mediate the interactions between the dark sector and the sm part... | sterile neutrino portal to dark matter ii: exact dark symmetry |
we show how a relativistic effective field theory for the superfluid phase of he 4 can replace the standard methods used to compute the production rates of low-momentum excitations due to the interaction with an external probe. this is done by studying the scattering problem of a light dark matter particle in the super... | sub-mev dark matter and the goldstone modes of superfluid helium |
in a popular class of models, dark matter comprises an asymmetric population of composite particles with short range interactions arising from a confined nonabelian gauge group. we show that coupling this sector to a well-motivated light mediator particle yields efficient darkleosynthesis, a dark-sector version of big-... | big bang darkleosynthesis |
the differential event rate in weakly interacting massive particle (wimp) direct detection experiments depends on the local dark matter density and velocity distribution. accurate modelling of the local dark matter distribution is therefore required to obtain reliable constraints on the wimp particle physics properties... | astrophysical uncertainties on the local dark matter distribution and direct detection experiments |
motivated by the fact that cosmological models based on f (q ) gravity are very efficient in fitting observational datasets at both background and perturbation levels, we perform a combined dynamical system analysis of both background and perturbation equations in order to examine the validity of this result through an... | cosmology in f (q ) gravity: a unified dynamical systems analysis of the background and perturbations |
we constrain the matter density ωm and the amplitude of density fluctuations σ8 within the λcdm cosmological model with shear peak statistics and angular convergence power spectra using mass maps constructed from the first three years of data of the dark energy survey (des y3). we use tomographic shear peak statistics,... | dark energy survey year 3 results: cosmology with peaks using an emulator approach |
we explore a novel class of multi-particle dark sectors, called inelastic boosted dark matter (ibdm). these models are constructed by combining properties of particles that scatter off matter by making transitions to heavier states (inelastic dark matter) with properties of particles that are produced with a large lore... | inelastic boosted dark matter at direct detection experiments |
we present two complementary nustar x-ray searches for kev-scale dark matter decaying to monoenergetic photons in the milky way halo. in the first, we utilize the known intensity pattern of unfocused stray light across the detector planes—the dominant source of photons from diffuse sources—to separate astrophysical emi... | long-exposure nustar constraints on decaying dark matter in the galactic halo |
we present a model of f (r ) gravity in the presence of a string theory motivated misalignment axion like particle materialized in terms of a canonical scalar field minimally coupled with gravity, and we study the cosmological phenomenology of the model, emphasizing mainly on the late-time era. the main result of the p... | geometric inflation and dark energy with axion f (r ) gravity |
we show that primordial black holes (pbhs) develop non-negligible spins through hawking emission of the large number of axion-like particles generically present in string theory compactifications. this is because scalars can be emitted in the monopole mode ($l=0$), where no angular momentum is removed from the bh, so a... | evaporating primordial black holes, the string axiverse, and hot dark radiation |
one problem of the λcdm model is the tension between the s8 found in cosmic microwave background (cmb) experiments and the smaller one obtained from large-scale observations in the late universe. the σ8 quantifies the relatively high level of clustering. likelihood analyses of the redshift space distortion (rsd) select... | quantifying the s8 tension with the redshift space distortion data set |
the large magellanic cloud is the most massive satellite galaxy of the milky way, with an estimated mass exceeding a tenth of the mass of the milky way1-5. just past its closest approach of about 50 kpc, and flying past the milky way at an astonishing speed of 327 km s−1 (ref. 6), the large magellanic cloud can affect ... | detection of the milky way reflex motion due to the large magellanic cloud infall |
dark matter might be an accidentally stable baryon of a new confining gauge interaction. we extend previous studies exploring the possibility that the dm is made of dark quarks heavier than the dark confinement scale. the resulting phenomenology contains new unusual elements: a two-stage dm cosmology (freeze-out follow... | dark matter as a weakly coupled dark baryon |
motivated by the recent excess in the electron recoil from xenon1t experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting. the heavier state down-scatters off the electron into the lighter state, making an appropriate recoil energy required for the xenon e... | exothermic dark matter for xenon1t excess |
the use of summary statistics beyond the two-point correlation function to analyse the non-gaussian clustering on small scales, and thereby, increasing the sensitivity to the underlying cosmological parameters, is an active field of research in cosmology. in this paper, we explore a set of new summary statistics - the ... | nearest neighbour distributions: new statistical measures for cosmological clustering |
we propose a new interacting dark sector model, stepped partially acoustic dark matter (spartacous), that can simultaneously address the two most important tensions in current cosmological data, the h0 and s8 problems. as in the partially acoustic dark matter (pacdm) scenario, this model features a subcomponent of dark... | stepped partially acoustic dark matter, large scale structure, and the hubble tension |
some variants of the mssm feature a strip in parameter space where the lightest neutralino χ is identified as the lightest supersymmetric particle (lsp), the gluino tilde{g} is the next-to-lightest supersymmetric particle (nlsp) and is nearly degenerate with χ, and the relic cold dark matter density is brought into the... | gluino coannihilation revisited |
a recent result from fermilab suggests that the measured w -boson mass deviates from the prediction of the standard model (sm) with a significance of >7 σ , and there may exist new physics beyond the sm. it is proposed that the inert two higgs doublet model (i2hdm) can well explain the new w -boson mass. meanwhile, ... | using γ -ray observations of dwarf spheroidal galaxies to test the possible common origin of the w -boson mass anomaly and the gev γ -ray and antiproton excesses |
we report on the experimental realization of a conservative optical lattice for cold atoms with a subwavelength spatial structure. the potential is based on the nonlinear optical response of three-level atoms in laser-dressed dark states, which is not constrained by the diffraction limit of the light generating the pot... | dark state optical lattice with a subwavelength spatial structure |
we constrain cosmological parameters from a joint cosmic shear analysis of peak-counts and the two-point shear correlation functions, as measured from the dark energy survey (des-y1). we find the structure growth parameter $s_8\equiv \sigma _8\sqrt{\omega _{\rm m}/0.3} = 0.766^{+0.033}_{-0.038}$ which, at 4.8 per cent ... | cosmic shear cosmology beyond two-point statistics: a combined peak count and correlation function analysis of des-y1 |
the chime/frb project has recently released its first catalog of fast radio bursts (frbs), containing 492 unique sources. we present results from angular cross-correlations of chime/frb sources with galaxy catalogs. we find a statistically significant (p-value ~ 10-4, accounting for look-elsewhere factors) cross-correl... | chime/frb catalog 1 results: statistical cross-correlations with large-scale structure |
sensitive microwave detectors are essential in radioastronomy1, dark-matter axion searches2 and superconducting quantum information science3,4. the conventional strategy to obtain higher-sensitivity bolometry is the nanofabrication of ever smaller devices to augment the thermal response5-7. however, it is difficult to ... | graphene-based josephson junction microwave bolometer |
quasielastic c 12 (e ,e′p ) scattering was measured at spacelike 4-momentum transfer squared q2=8 , 9.4, 11.4, and 14.2 (gev /c )2 , the highest ever achieved to date. nuclear transparency for this reaction was extracted by comparing the measured yield to that expected from a plane-wave impulse approximation calculatio... | ruling out color transparency in quasielastic c 12 (e ,e′p ) up to q2 of 14.2 (gev /c )2 |
we study the prospects for discovering heavy neutral leptons at forward search experiment (faser), the newly proposed detector at the lhc. previous studies showed that a relatively small detector with ∼10 m length and ≲1 m2 cross sectional area can probe large unconstrained parts of parameter space for dark photons and... | heavy neutral leptons at faser |
the number of effective relativistic neutrino species represents a fundamental probe of the thermal history of the early universe, and as such of the standard model of particle physics. traditional approaches to the neutrino decoupling are either very technical and computationally expensive, or assume that neutrinos de... | neutrino decoupling beyond the standard model: cmb constraints on the dark matter mass with a fast and precise neff evaluation |
the natural next-to-minimal supersymmetric standard model (nnmssm) is featured by predicting one c p -even higgs boson satisfying mh1≲120gev and higgsinos lighter than about 300 gev, and consequently, the cross section for dark matter (dm)-nucleon scattering in this scenario is usually quite large. we study the diphoto... | diphoton signal of the light higgs boson in natural nmssm |
the inert two-higgs-doublet model (i2hdm) is a well-motivated minimal consistent dark matter (dm) model, but it is rather challenging to test at the lhc in the parameter space allowed by relic density and dm direct detection constraints. this is especially true when considering the latest xenon 1t data on direct dm sea... | advancing lhc probes of dark matter from the inert two-higgs-doublet model with the monojet signal |
very recently, a fermilab report of muon $g-2$ showed a $4.2\sigma$ discrepancy between it and the standard model (sm) prediction. motivated by this inspiring result and the increasing tension in supersymmetric interpretation of the anomalous magnetic moment, it is argued that in the general next-to-minimal supersymmet... | improved $(g-2)_\\mu$ measurement and singlino dark matter in $\\mu$-term extended $\\mathbb{z}_3$-nmssm |
we develop a formalism to analytically describe the clustering of matter in the mildly non-linear regime in the presence of massive neutrinos. neutrinos, whose free streaming wavenumber ($k_{\rm fs}$) is typically longer than the non-linear scale ($k_{\rm nl}$) are described by a boltzmann equation coupled to the effec... | the effective field theory of large-scale structure in the presence of massive neutrinos |
any slight variations in the fundamental constants of nature, which may be induced by dark matter or some yet-to-be-discovered cosmic field, would characteristically alter the phase of a light beam inside an interferometer, which can be measured extremely precisely. laser and maser interferometry may be applied to sear... | searching for dark matter and variation of fundamental constants with laser and maser interferometry |
we consider the production of a new mev-scale fermion in coherent elastic neutrino-nucleus scattering. the effect on the measurable nucleon recoil spectrum is calculated. assuming that the new fermion couples to neutrinos and quarks via a singlet scalar, we set limits on its mass and coupling using coherent data and al... | producing a new fermion in coherent elastic neutrino-nucleus scattering: from neutrino mass to dark matter |
aims: we present the reconstruction of hydrostatic mass profiles in 13 x-ray luminous galaxy clusters that have been mapped in their x-ray and sunyaev-zeldovich (sz) signals out to r200 for the xmm-newton cluster outskirts project (x-cop).methods: using profiles of the gas temperature, density, and pressure that have b... | hydrostatic mass profiles in x-cop galaxy clusters |
we show that gravity models, such as $f(\mathcal{l}_{\rm m})$, $f(g_{\mu\nu} t^{\mu\nu})$ and $f(t_{\mu\nu} t^{\mu\nu})$, that modify the introduction of the material source in the usual einstein-hilbert action by adding only matter-related terms to the matter lagrangian density $\mathcal{l}_{\rm m}$ are equivalent to ... | equivalence of matter-type modified gravity theories to general relativity with nonminimal matter interaction |
the matter in our universe comes in two flavors: dark and baryonic. of these, only the latter couples to photons, giving rise to the well-known baryon acoustic oscillations and, in the process, generating supersonic relative velocities between dark matter and baryons. these velocities—imprinted with the acoustic scale ... | standard ruler at cosmic dawn |
we present a new model of composite higgs based on a gauged su(n) group with 4 dirac fermions in the fundamental representation. at low energy, the model has a global symmetry su(4)×su(4) broken to the diagonal su(4), containing 2 higgs doublets in the coset. we study in detail the issue of the vacuum alignment. in par... | fundamental composite 2hdm: su(n) with 4 flavours |
we have witnessed the beginning of an era where dark matter and neutrino detectors can probe similar new physics phenomena. motivated by the low-energy electron recoil spectrum observed by the dark matter experiment, xenon1t, at gran sasso laboratory, we interpret the observed signal not in terms of a dark matter parti... | xenon1t anomaly: a light $z^\\prime$ |
in this paper, we investigate the effects of a dark matter (dm) spike on the neighborhood of sgr a*, the black hole (bh) in the center of the milky way. our main goal is to investigate whether current and future astronomical observations of sgr a* could detect the presence of such a dm spike. at first, we construct the... | modeling the sgr a* black hole immersed in a dark matter spike |
coupling between standard model particles and theoretically well-motivated ultralight dark matter (udm) candidates can lead to time variation of fundamental constants, including the proton-to-electron mass ratio μ ≡mp/me≈1836 . the presence of nearly degenerate vibrational energy levels of different character in polyat... | enhanced sensitivity to ultralight bosonic dark matter in the spectra of the linear radical sroh |
the scip optimization suite provides a collection of software packages for mathematical optimization centered around the constraint integer programming framework scip. this paper discusses enhancements and extensions contained in version 8.0 of the scip optimization suite. major updates in scip include improvements in ... | the scip optimization suite 8.0 |
the qcd axion has been postulated to exist because it solves the strong-c p problem. furthermore, if it exists axions should be created in the early universe and could account for all the observed dark matter. in particular, axion masses of order 10-10 ev to 10-7 ev correspond to axions in the vicinity of the grand uni... | searching for gut-scale qcd axions and monopoles with a high-voltage capacitor |
we propose a mechanism called axiogenesis where the cosmological excess of baryons over antibaryons is generated from the rotation of the qcd axion. the peccei-quinn (pq) symmetry may be explicitly broken in the early universe, inducing the rotation of a pq charged scalar field. the rotation corresponds to the asymmetr... | axiogenesis |
we present an accurate non-linear matter power spectrum prediction scheme for a variety of extensions to the standard cosmological paradigm, which uses the tuned halo model previously developed in mead et al. we consider dark energy models that are both minimally and non-minimally coupled, massive neutrinos and modifie... | accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces |
we calculate target-material responses for dark matter--electron scattering at the \textit{ab-initio} all-electron level using atom-centered gaussian basis sets. the all-electron effects enhance the material response at high momentum transfers from dark matter to electrons, $q\gtrsim \mathcal{o}\left({10\ \alpha m_e}\r... | fully ab-initio all-electron calculation of dark matter--electron scattering in crystals with evaluation of systematic uncertainties |
we use observations of ultrafaint dwarf (ufd) galaxies to constrain the particle mass of ultralight dark matter. potential fluctuations created by wave interference in virialized "fuzzy" dark matter (fdm) halos dynamically heat stellar orbits in ufds, some of which exhibit velocity dispersions of ≲3 km /s and sizes ≲40... | excluding fuzzy dark matter with sizes and stellar kinematics of ultrafaint dwarf galaxies |
the m2 beamline at cern/sps uniquely provides both muon and hadron beams of high intensity in the energy range of few hundred gev. its present versatility, together with the prospect of upgrading it with radio-frequency cavities to separate hadron species, make it the ideal location for an ambitious experimental progra... | the new amber experiment at the cern sps |
the total number and luminosity function of the population of dwarf galaxies of the milky way (mw) provide important constraints on the nature of the dark matter and on the astrophysics of galaxy formation at low masses. however, only a partial census of this population exists because of the flux limits and restricted ... | the total satellite population of the milky way |
we consider a recently proposed model in which dark matter interacts with a thermal background of dark radiation. dark radiation consists of relativistic degrees of freedom which allow larger values of the expansion rate of the universe today to be consistent with cmb data (h0-problem). scattering between dark matter a... | interacting dark sector and precision cosmology |
we study how to describe collapsed objects, such as galaxies, in the context of the effective field theory of large scale structures. the overdensity of galaxies at a given location and time is determined by the initial tidal tensor, velocity gradients and spatial derivatives of the regions of dark matter that, during ... | bias in the effective field theory of large scale structures |
bird et al. [1] and sasaki et al. [2] have recently proposed the intriguing possibility that the black holes detected by ligo could be all or part of the cosmological dark matter. this offers an alternative to wimps and axions, where dark matter could be comprised solely of standard model particles. the mass range lies... | a preferred mass range for primordial black hole formation and black holes as dark matter revisited |
we propose a local u(1) lμ -lτ model to explain b → sμ+μ- anomaly observed at the lhcb and belle experiments. the model also has a natural dark matter candidate n. we introduce su(2)l-doublet colored scalar q ∼ to mediate b → s transition at one-loop level. the u(1) lμ -lτ gauge symmetry is broken spontaneously by the ... | dark matter contribution to b → sμ+μ- anomaly in local u(1) lμ -lτ model |
an extended uncertainty principle inspired schwarzschild metric that allows for large scale modifications to gravitation is presented. at a new fundamental length scale l*, the usual black hole characteristics (horizon radius, isco, and photosphere) deviate from their general relativistic counterparts by an additional ... | extended uncertainty principle black holes |
we calculate analytical vacuum stability or bounded from below conditions for general scalar potentials of a few fields. after a brief review of copositivity, we show how to find positivity conditions for more complicated potentials. we discuss the vacuum stability conditions of the general potential of two real scalar... | vacuum stability of a general scalar potential of a few fields |
direct detection experiments utilizing electronic excitations are spearheading the search for light, sub-gev, dark matter (dm). it is thus crucial to have accurate predictions for any dm-electron interaction rate in this regime. exceed-dm (extended calculation of electronic excitations for direct detection of dark matt... | extended calculation of electronic excitations for direct detection of dark matter |
the direct detection of sub-gev dark matter interacting with nucleons is hampered by the low recoil energies induced by scatterings in the detectors. this experimental difficulty is avoided in the scenario of boosted dark matter where a component of dark matter particles is endowed with large kinetic energies. in this ... | direct detection of light dark matter from evaporating primordial black holes |
the fundamental nature of dark matter is a central theme of the snowmass 2021 process, extending across all frontiers. in the last decade, advances in detector technology, analysis techniques and theoretical modeling have enabled a new generation of experiments and searches while broadening the types of candidates we c... | snowmass 2021 cross frontier report: dark matter complementarity (extended version) |
the understanding of the physical processes that lead to the origin of matter in the early universe, creating both an excess of matter over anti-matter and a dark matter abundance that survived until the present, is one of the most fascinating challenges in modern science. the problem cannot be addressed within our cur... | on the origin of matter in the universe |
we use the distribution of accreted stars in sloan digital sky survey-gaia dr2 to demonstrate that a nontrivial fraction of the dark matter halo within galactocentric radii of 7.5-10 kpc and | z| > 2.5 {kpc} is in substructure and thus may not be in equilibrium. using a mixture likelihood analysis, we separate the c... | inferred evidence for dark matter kinematic substructure with sdss-gaia |
we explore the implications of a rapid appearance of dark energy between the redshifts (z) of one and two on the expansion rate and growth of perturbations. using both gaussian process regression and a parametric model, we show that this is the preferred solution to the current set of low-redshift (z<3) distance mea... | implications of a transition in the dark energy equation of state for the h0 and σ8 tensions |
understanding the dynamics of a quantum bit's environment is essential for the realization of practical systems for quantum information processing and metrology. we use single nitrogen-vacancy (nv) centers in diamond to study the dynamics of a disordered spin ensemble at the diamond surface. specifically, we reduce the... | probing spin dynamics on diamond surfaces using a single quantum sensor |
we present a validation of the dark energy survey year 3 (des y3) 3 ×2 -point analysis choices by testing them on buzzard2.0, a new suite of cosmological simulations that is tailored for the testing and validation of combined galaxy clustering and weak-lensing analyses. we show that the buzzard2.0 simulations accuratel... | dark energy survey year 3 results: cosmology from combined galaxy clustering and lensing validation on cosmological simulations |
standard cosmology predicts that prior to matter-radiation equality about 41% of the energy density was in free-streaming neutrinos. in many beyond standard model scenarios, however, the amount and free-streaming nature of this component is modified. for example, this occurs in models with new neutrino self-interaction... | interacting radiation after planck and its implications for the hubble tension |
axions, originally proposed to solve the strong cp problem of quantum chromodynamics, emerge now as leading candidates of wisp dark matter. the rich phenomenology associated to the light and stable qcd axion can be described as an effective magnetic field that can be experimentally investigated. for the quax experiment... | operation of a ferromagnetic axion haloscope at m_a=58 μ ev |
neutron stars provide a cosmic laboratory to study the nature of dark matter particles and their interactions. dark matter can be captured by neutron stars via scattering, where kinetic energy is transferred to the star. this can have a number of observational consequences, such as the heating of old neutron stars to i... | improved treatment of dark matter capture in neutron stars |
thermal relics lighter than an mev contribute to the energy density of the universe at the time of nucleosynthesis and recombination. constraints on extra radiation degrees of freedom typically exclude even the simplest of such dark sectors. we explore the possibility that a sub-mev dark sector entered equilibrium with... | thermal neutrino portal to sub-mev dark matter |
we introduce an extension of the elvis project to account for the effects of the milky way galaxy on its subhalo population. our simulation suite, phat elvis, consists of 12 high-resolution cosmological dark matter-only (dmo) zoom simulations of milky way-size λcdm haloes [mv = (0.7-2) × 1012 m⊙] along with 12 re-runs ... | phat elvis: the inevitable effect of the milky way's disc on its dark matter subhaloes |
we develop a quantum mechanical formalism to treat the strong coupling between an electromagnetic mode and a vibrational excitation of an ensemble of organic molecules. by employing a bloch-redfield-wangsness approach, we show that the influence of dephasing-type interactions, i.e., elastic collisions with a background... | quantum theory of collective strong coupling of molecular vibrations with a microcavity mode |
the generation of the asymmetric cosmic baryon abundance requires a departure from thermal equilibrium in the early universe. in a large class of baryogenesis models, the baryon asymmetry results from the out-of-equilibrium decay of a new, massive particle. we highlight that in the interesting scenario where this parti... | probing baryogenesis with displaced vertices at the lhc |
we present an updated model of light and charge yields from nuclear recoils in liquid xenon with a simultaneously constrained parameter set. a global analysis is performed using measurements of electron and photon yields compiled from all available historical data, as well as measurements of the ratio of the two. these... | a global analysis of light and charge yields in liquid xenon |
the cosmic axion spin precession experiment (casper) is a nuclear magnetic resonance experiment (nmr) seeking to detect axion and axion-like particles which could make up the dark matter present in the universe. we review the predicted couplings of axions and axion-like particles with baryonic matter that enable their ... | the cosmic axion spin precession experiment (casper): a dark-matter search with nuclear magnetic resonance |
we identify potentially the world's most sensitive location to search for millicharged particles in the 10 mev to 100 gev mass range: the forward region at the lhc. we propose constructing a scintillator-based experiment, forward microcharge search (formosa) in this location, and estimate the corresponding sensitivity ... | formosa: looking forward to millicharged dark sectors |
we look for and place observational constraints on the imprint of ultralight dark matter (uldm) soliton cores in rotation-dominated galaxies. extending previous analyses, we find a conservative constraint which disfavors the soliton-host halo relation found in some numerical simulations over a broad range in the uldm p... | galactic rotation curves versus ultralight dark matter: a systematic comparison with sparc data |
relic density calculations of dark matter freezing out from the primordial plasma have reached a high level of sophistication, with several numerical tools readily available that match the observationally required accuracy. dark matter production via the freeze-in mechanism, on the other hand, is sensitive to much high... | freezing-in a hot bath: resonances, medium effects and phase transitions |
aims: we present a cosmological analysis of abundances and stacked weak lensing profiles of galaxy clusters, exploiting the amico kids-dr3 catalogue. the sample consists of 3652 galaxy clusters with intrinsic richness λ* ≥ 20, over an effective area of 377 deg2, in the redshift range z ∈ [0.1, 0.6].methods: we quantifi... | amico galaxy clusters in kids-dr3: cosmological constraints from counts and stacked weak lensing |
in the past 50 years, cosmology has gone from a field known for the errors being in the exponents to a precision science. the transformation-powered by ideas, technology, a paradigm shift, and culture change-has revolutionized our understanding of the universe, with the lambda cold dark matter (λcdm) paradigm as its cr... | the road to precision cosmology |
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