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new light states thermally coupled to the standard model plasma alter the expansion history of the universe and impact the synthesis of the primordial light elements. in this work, we carry out an exhaustive and precise analysis of the implications of mev-scale bsm particles in big bang nucleosynthesis (bbn) and for co... | refined bounds on mev-scale thermal dark sectors from bbn and the cmb |
we propose boosted dark matter (bdm) as a possible explanation for the excess of kev electron recoil events observed by xenon1t. bdm particles have velocities much larger than those typical of virialized dark matter, and, as such, bdm-electron scattering can naturally produce kev electron recoils. we show that the requ... | boosted dark matter interpretation of the xenon1t excess |
in this work, we consider the case of a strongly coupled dark/hidden sector, which extends the standard model (sm) by adding an additional non-abelian gauge group. these extensions generally contain matter fields, much like the sm quarks, and gauge fields similar to the sm gluons. we focus on the exploration of such se... | theory, phenomenology, and experimental avenues for dark showers: a snowmass 2021 report |
monolayer wse2 is an intriguing material to explore dark exciton physics. we have measured the photoluminescence from dark excitons and trions in ultraclean monolayer wse2 devices encapsulated by boron nitride. the dark trions can be tuned continuously between negative and positive trions with electrostatic gating. we ... | gate tunable dark trions in monolayer wse2 |
recently xenon1t collaboration announced that they observed some excess in the electron recoil energy around a 2-3 kev. we show that this excess can be interpreted as exothermic scattering of excited dark matter on atomic electron through dark photon exchange. we consider dm models with local dark u (1) gauge symmetry ... | xenon1t excess in local z2 dm models with light dark sector |
we present and compare several cosmological constraints on the cross section for elastic scattering between dark matter (dm) and baryons, for cross sections with a range of power-law dependences on the dm-baryon relative velocity v , especially focusing on the case of σ ∝v-4. we study constraints spanning a wide range ... | early-universe constraints on dark matter-baryon scattering and their implications for a global 21 cm signal |
we construct models with minimal field content that can simultaneously explain the muon g - 2 anomaly and give the correct dark matter relic abundance. these models fall into two general classes, whether or not the new fields couple to the higgs. for the general structure of models without new higgs couplings, we provi... | minimal models for dark matter and the muon g - 2 anomaly |
gluino-sugra (g ~sugra), which is an economical extension of the predictive msugra, adopts much heavier gluino mass parameter than other gauginos mass parameters and universal scalar mass parameter at the unification scale. it can elegantly reconcile the experimental results on the higgs boson mass, the muon g − 2, the... | gluino-sugra scenarios in light of fnal muon g - 2 anomaly |
one of the major objectives of the experimental programs at the large hadron collider (lhc) is the discovery of new physics. this requires the identification of rare signals in immense backgrounds. using machine learning algorithms greatly enhances our ability to achieve this objective. with the progress of quantum tec... | application of quantum machine learning using the quantum variational classifier method to high energy physics analysis at the lhc on ibm quantum computer simulator and hardware with 10 qubits |
several groups have identified an extended excess of gamma rays over the modeled foreground and background emissions towards the galactic center (gc) based on observations with the fermi large area telescope. this excess emission is compatible in morphology and spectrum with a telltale sign from dark matter (dm) annihi... | a tale of tails: dark matter interpretations of the fermi gev excess in light of background model systematics |
the results of a search for new phenomena in final states with b-jets and missing transverse momentum using 139 fb−1 of proton-proton data collected at a centre-of-mass energy √{s } = 13 tev by the atlas detector at the lhc are reported. the analysis targets final states produced by the decay of a pair-produced supersy... | search for new phenomena in final states with b-jets and missing transverse momentum in √{s } = 13 tev pp collisions with the atlas detector |
we derive joint constraints on the warm dark matter (wdm) half-mode scale by combining the analyses of a selection of astrophysical probes: strong gravitational lensing with extended sources, the ly α forest, and the number of luminous satellites in the milky way. we derive an upper limit of λhm = 0.089 mpc h-1 at the ... | joint constraints on thermal relic dark matter from strong gravitational lensing, the ly α forest, and milky way satellites |
the mirror twin higgs model (mth) is a solution to the higgs hierarchy problem that provides well-predicted cosmological signatures with only three extra parameters: the temperature of the twin sector, the abundance of twin baryons, and the vacuum expectation value (vev) of twin electroweak symmetry breaking. these par... | mirror twin higgs cosmology: constraints and a possible resolution to the h0 and s8 tensions |
we estimate the mass of the milky way (mw) within 21.1 kpc using the kinematics of halo globular clusters (gcs) determined by gaia. the second gaia data release (dr2) contained a catalog of absolute proper motions (pms) for a set of galactic gcs and satellite galaxies. we select from the catalog only halo gcs, identify... | evidence for an intermediate-mass milky way from gaia dr2 halo globular cluster motions |
higher-order topological insulators (hotis), a new horizon of topological phases of matter, host lower-dimensional corner or hinge states, providing important stepping stones to the realization of robust topological waveguides in higher dimensions. the nontrivial band topology that gives rise to the corner or hinge sta... | valley-selective topological corner states in sonic crystals |
the lux-zeplin (lz) experiment is a dark matter detector centered on a dual-phase xenon time projection chamber. we report searches for new physics appearing through few-kev-scale electron recoils, using the experiment's first exposure of 60 live days and a fiducial mass of 5.5 t. the data are found to be consistent wi... | search for new physics in low-energy electron recoils from the first lz exposure |
we carry out a detailed study of the confinement phase transition in a dark sector with an s u (n ) gauge group and a single generation of a dark heavy quark. we focus on heavy enough quarks such that their abundance freezes out before the phase transition, and the phase transition is of first order. we find that durin... | thermal squeezeout of dark matter |
a search for dark matter axions with masses $>10 \mu ev/c^{2}$ has been performed using the haystac experiment's squeezed state receiver to achieve sub-quantum limited noise. this report includes details of the design and operation of the experiment previously used to search for axions in the mass ranges $16.96-17.1... | new results from haystac's phase ii operation with a squeezed state receiver |
we provide expressions for the nonperturbative matching of the effective field theory describing dark matter interactions with quarks and gluons to the effective theory of nonrelativistic dark matter interacting with nonrelativistic nucleons. we give expressions of leading and subleading order in chiral counting. in ge... | from quarks to nucleons in dark matter direct detection |
does the value of the higgs mass parameter affect the expectation value of local operators in the standard model? for essentially all local operators the answer to this question is "no", and this is one of the avatars of the hierarchy problem: nothing is "triggered" when the higgs mass parameter crosses zero. in this a... | weak scale as a trigger |
cmb-s4 is a proposed experiment to map the polarization of the cosmic microwave background (cmb) to nearly the cosmic variance limit for angular scales that are accessible from the ground. the science goals and capabilities of cmb-s4 in illuminating cosmic inflation, measuring the sum of neutrino masses, searching for ... | cmb-s4 technology book, first edition |
we present a new, updated version of the euclidemulator (called euclidemulator2), a fast and accurate predictor for the nonlinear correction of the matter power spectrum. 2 per cent level accurate emulation is now supported in the eight-dimensional parameter space of w0wacdm+∑mν models between redshift z = 0 and z = 3 ... | euclid preparation: ix. euclidemulator2 - power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations |
we show that the recently reported anomalies in b →s μ+μ- transitions, as well as the long-standing gμ-2 discrepancy, can be addressed simultaneously by a new massive abelian gauge boson with loop-induced coupling to muons. such a scenario typically leads to a stable dark matter candidate with a thermal relic density c... | dark matter relic from muon anomalies |
axions and axionlike particles (alps) are some of the most popular candidates for dark matter, with several viable production scenarios that make different predictions. in the scenario in which the axion is born after inflation, its field develops significant inhomogeneity and evolves in a highly nonlinear fashion. und... | simulations of axionlike particles in the postinflationary scenario |
we propose the use of trapped ions for the detection of millicharged dark matter. millicharged particles will scatter off the ions, giving a signal either in individual events or in the overall heating rate of the ions. ion traps have several properties that make them ideal detectors for such a signal. first, ion traps... | millicharged dark matter detection with ion traps |
joint analyses of small-scale cosmological structure probes are relatively unexplored and promise to advance measurements of microphysical dark matter properties using heterogeneous data. here, we present a multidimensional analysis of dark matter substructure using strong gravitational lenses and the milky way (mw) sa... | dark matter constraints from a unified analysis of strong gravitational lenses and milky way satellite galaxies |
we consider searches for the inelastic scattering of low-mass dark matter at direct detection experiments, using the migdal effect. we find that there are degeneracies between the dark matter mass and the mass splitting that are difficult to break. using xenon1t data we set bounds on a previously unexplored region of t... | low-mass inelastic dark matter direct detection via the migdal effect |
we present a new mechanism for producing the correct relic abundance of dark photon dark matter over a wide range of its mass, extending down to 10-20ev. the dark matter abundance is initially stored in an axion which is misaligned from its minimum. when the axion starts oscillating, it efficiently transfers its energy... | relic abundance of dark photon dark matter |
monolayers of molybdenum and tungsten dichalcogenides are direct bandgap semiconductors, which makes them promising for opto-electronic applications. in particular, van der waals heterostructures consisting of monolayers of mos2 sandwiched between atomically thin hexagonal boron nitride (hbn) and graphene electrodes al... | wse2 light-emitting tunneling transistors with enhanced brightness at room temperature |
we describe the design and assembly of the lux-zeplin experiment, a direct detection search for cosmic wimp dark matter particles. the centerpiece of the experiment is a large liquid xenon time projection chamber sensitive to low energy nuclear recoils. rejection of backgrounds is enhanced by a xe skin veto detector an... | the lux-zeplin (lz) experiment |
a haloscope of the quax-a γ experiment composed of an oxygen-free high thermal conductivity-cu cavity inside an 8.1 t magnet and cooled to ∼200 mk is put in operation for the search of galactic axion with mass ma≃43 μ ev . the power emitted by the resonant cavity is amplified with a josephson parametric amplifier whose... | search for invisible axion dark matter of mass ma=43 μ ev with the quax-a γ experiment |
we report the results of an axion dark matter search over an axion mass range of 9.39 - 9.51 μ ev . a flux-driven josephson parametric amplifier (jpa) was added to the cryogenic receiver chain. a system noise temperature of as low as 200 mk was achieved, which is the lowest recorded noise among published axion cavity e... | near-quantum-noise axion dark matter search at capp around 9.5 μ ev |
we explore the possibility of explaining the w boson mass with an extra gauge boson mixing with the z boson at tree level. extra boson mixing with the z boson will change the expression of the z boson mass, thus altering the w boson mass. we explore two models in this work. we find that in the derivative portal dark ma... | z boson mixing and the mass of the w boson |
we present the silverrush program strategy and clustering properties investigated with ∼2000 lyα emitters (laes) at z = 5.7 and 6.6 found in the early data of the hyper suprime-cam (hsc) subaru strategic program survey exploiting the carefully designed narrow-band filters. we derive angular correlation functions with t... | systematic identification of laes for visible exploration and reionization research using subaru hsc (silverrush). i. program strategy and clustering properties of ∼2000 lyα emitters at z = 6-7 over the 0.3-0.5 gpc2 survey area |
a summary of the constraints from the atlas experiment on r-parity-conserving supersymmetry is presented. results from 22 separate atlas searches are considered, each based on analysis of up to 20.3 fb-1 of proton-proton collision data at centre-of-mass energies of √{s}=7 and 8 tev at the large hadron collider. the res... | summary of the atlas experiment's sensitivity to supersymmetry after lhc run 1 — interpreted in the phenomenological mssm |
the possibility that neutrinos may be their own antiparticles, unique among the known fundamental particles, arises from the symmetric theory of fermions proposed by ettore majorana in 1937. given the profound consequences of such majorana neutrinos, among which is a potential explanation for the matter-antimatter asym... | search for majorana neutrinos exploiting millikelvin cryogenics with cuore |
we provide a theoretical model of f (r ) gravity in which it is possible to describe in a unified way inflation, an early and a late dark energy era, in the presence of a light axion particle which plays the role of the dark matter component of the universe. particularly, the early time phenomenology is dominated by an... | unifying inflation with early and late dark energy epochs in axion f (r ) gravity |
this review discusses both experimental and theoretical aspects of searches for dark matter at the lhc. an overview of the various experimental search channels is given, followed by a summary of the different theoretical approaches for predicting dark matter signals. a special emphasis is placed on the interplay betwee... | review of lhc dark matter searches |
we investigate the effect of self-interacting dark matter (sidm) on the density profiles of vmax ≃ 40km s-1 isolated dwarf dark matter haloes - the scale of relevance for the too big to fail problem (tbtf) - using very high resolution cosmological zoom simulations. each halo has millions of particles within its virial ... | core formation in dwarf haloes with self-interacting dark matter: no fine-tuning necessary |
we show that the relaxion, which addresses the hierarchy problem, can account for the observed dark matter (dm) relic density. the setup is similar to the case of axion dm models topped with a dynamical misalignment mechanism. after the reheating, when the temperature is well above the electroweak scale, the backreacti... | coherent relaxion dark matter |
calculating the abundance of thermally produced dark matter particles has become a standard procedure, with sophisticated methods guaranteeing a precision that matches the percent-level accuracy in the observational determination of the dark matter density. here, we point out that one of the main assumptions in the com... | early kinetic decoupling of dark matter: when the standard way of calculating the thermal relic density fails |
axions/axion-like particles (alps) are a well-motivated extension of the standard model and are generic within string theory. the x-ray transparency of the intracluster medium (icm) in galaxy clusters is a powerful probe of light alps (with mass $\lt {10}^{-11}\mathrm{ev}$ ); as x-ray photons from an embedded or backgr... | astrophysical limits on very light axion-like particles from chandra grating spectroscopy of ngc 1275 |
the atlas experiment at the lhc has measured the higgs boson couplings and mass, and searched for invisible higgs boson decays, using multiple production and decay channels with up to 4.7 fb-1 of pp collision data at √{s}=7 tev and 20.3 fb-1 at √{s}=8 tev. in the current study, the measured production and decay rates o... | constraints on new phenomena via higgs boson couplings and invisible decays with the atlas detector |
we propose a new regime of minimal qcd axion dark matter that lies between the pre- and post-inflationary scenarios, such that the peccei-quinn (pq) symmetry is restored only on sufficiently large spatial scales. this leads to a novel cosmological evolution, in which strings and domain walls re-enter the horizon and an... | early vs late string networks from a minimal qcd axion |
the atlas and cms collaborations recently reported a mild excess in the diphoton final state pointing to a resonance with a mass of around 750 gev and a potentially large width. we consider the possibility of a scalar resonance being produced via gluon fusion and decaying to electroweak gauge bosons, jets and pairs of ... | one jet to rule them all: monojet constraints and invisible decays of a 750 gev diphoton resonance |
results from the lhc put severe constraints on models of new physics. this includes constraints on the higgs sector from the precise measurement of the mass and couplings of the 125 gev higgs boson, as well as limits from searches for other new particles. we present the procedure to use these constraints in micromegas ... | collider limits on new physics within micromegas_4.3 |
constraints on selected mediator-based dark matter models and a scalar dark energy model using up to 37 fb-1 √{s} = 13 tev pp collision data collected by the atlas detector at the lhc during 2015-2016 are summarised in this paper. the results of experimental searches in a variety of final states are interpreted in term... | constraints on mediator-based dark matter and scalar dark energy models using √{s} = 13 tev pp collision data collected by the atlas detector |
the first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses a data sample corresponding to 138 fb-1, collected with the cms detector at the cern lhc, at √{s } = 13 tev. the hidden sector is hypothesized to couple to the standard model (sm) via a heavy leptophobic z' med... | search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 tev |
dark sector particles at the gev scale carrying baryon number provide an attractive framework for understanding the origin of dark matter and the matter-antimatter asymmetry of the universe. we demonstrate that dark decays of hadronic states containing strange quarks—hyperons—offer excellent prospects for discovering s... | strange physics of dark baryons |
the long-standing 4.2 σ muon g -2 anomaly may be the result of a new particle species which could also couple to dark matter and mediate its annihilations in the early universe. in models where both muons and dark matter carry equal charges under a u (1 )lμ-lτ gauge symmetry, the corresponding z' can both resolve the o... | simplest and most predictive model of muon g -2 and thermal dark matter |
we explore the simplest viable dark matter model with a real singlet scalar, vector-like singlet and doublet fermions. the yukawa couplings associated with the fermion sector play a crucial role in getting the current relic density through freeze-in and freeze-out mechanism. we discuss the constraints from the recent m... | the fimp-wimp dark matter in the extended singlet scalar model |
a generalized version for the rastall theory is proposed showing the agreement with the cosmic accelerating expansion. in this regard, a coupling between geometry and the pressureless matter fields is derived which may play the role of dark energy, responsible for the current accelerating expansion phase. moreover, our... | a generalization to the rastall theory and cosmic eras |
spin defects in hexagonal boron nitride (hbn) are promising quantum systems for the design of flexible two-dimensional quantum sensing platforms. here we rely on hbn crystals isotopically enriched with either 10b or 11b to investigate the isotope-dependent properties of a spin defect featuring a broadband photoluminesc... | decoherence of vb−? spin defects in monoisotopic hexagonal boron nitride |
we present the results of a search for unknown interactions that couple to mass between an optically levitated microsphere and a gold-coated silicon cantilever. the scale and geometry of the apparatus enable a search for new forces that appear at distances below 100 μ m and which would have evaded previous searches due... | search for screened interactions associated with dark energy below the 100 μ m length scale |
binary transition metal dichalcogenide monolayers share common properties such as a direct optical bandgap, spin-orbit splittings of hundreds of mev, light-matter interaction dominated by robust excitons and coupled spin-valley states. here we demonstrate spin-orbit-engineering in mo(1-x)wxse2 alloy monolayers for opto... | spin-orbit engineering in transition metal dichalcogenide alloy monolayers |
we simulate the formation and evolution of ultralight bosonic dark matter halos from cosmological initial conditions. using zoom-in techniques, we are able to resolve the detailed interior structure of the halos. we observe the formation of solitonic cores and confirm the core-halo mass relation previously found by sch... | formation and structure of ultralight bosonic dark matter halos |
we show that solving the flavor problem of the standard model with a simple u (1 )h flavor symmetry naturally leads to an axion that solves the strong c p problem and constitutes a viable dark matter candidate. in this framework, the ratio of the axion mass and its coupling to photons is related to the sm fermion masse... | minimal axion model from flavor |
we study a number of u(1)x models featuring a dirac fermion dark matter particle. we perform a comprehensive analysis which includes the study of corrections to the muon magnetic moment, dilepton searches with lhc data, as well as direct and indirect dark matter detection constraints. we consider four different couplin... | dirac-fermionic dark matter in u(1)x models |
sub-gev dark matter (dm) which interacts with electrons can excite electrons occupying molecular orbitals in a scattering event. in particular, aromatic compounds such as benzene or xylene have an electronic excitation energy of a few ev, making them sensitive to dm as light as a few mev. these compounds are often used... | dark matter-electron scattering from aromatic organic targets |
we give a brief overview of beyond the standard model (bsm) theories with an extended scalar sector and their phenomenological status in the light of recent experimental results. we discuss the relevant theoretical and experimental constraints, and show their impact on the allowed parameter space of two specific models... | constraining extended scalar sectors at the lhc and beyond |
cold dark matter (cdm) constitutes most of the matter in the universe. the interplay between dark and luminous matter in dense cosmic environments, such as galaxy clusters, is studied theoretically using cosmological simulations. observations of gravitational lensing are used to characterize the properties of substruct... | an excess of small-scale gravitational lenses observed in galaxy clusters |
the search for dark matter weakly interacting massive particles with noble liquids has probed masses down and below a gev/c2. the ultimate limit is represented by the experimental threshold on the energy transfer to the nuclear recoil. currently, the experimental sensitivity has reached a threshold equivalent to a few ... | migdal effect and photon bremsstrahlung: improving the sensitivity to light dark matter of liquid argon experiments |
we show that the type-i seesaw, responsible for generating the light neutrino mass, itself is capable of accommodating one of the three right handed neutrinos as a freeze-in type of dark matter where the required smallness of the associated coupling is connected to the lightness of the (smallest) active neutrino mass. ... | imprint of the seesaw mechanism on feebly interacting dark matter and the baryon asymmetry |
recently, the xenon1t experiment has reported the possible detection of an excess in the electronic recoil spectrum. such an excess may indicate the presence of new physics. in this work, we suggest that the scattering of mirror electrons with ordinary electrons through photon-mirror photon kinetic mixing with paramete... | mirror dark matter and electronic recoil events in xenon1t |
for the past 50 years, superconducting detectors have offered exceptional sensitivity and speed for detecting faint electromagnetic signals in a wide range of applications. these detectors operate at very low temperatures and generate a minimum of excess noise, making them ideal for testing the non-local nature of real... | a superconducting nanowire single-photon camera with 400,000 pixels |
the boundaries of cold dark matter halos are commonly defined to enclose a density contrast δ relative to a reference (mean or critical) density. we argue that a more physical halo boundary choice is the radius at which accreted matter reaches its first orbital apocenter after turnaround. this splashback radius, {r}{sp... | the splashback radius as a physical halo boundary and the growth of halo mass |
the scattering of dark matter (dm) particles with sub-gev masses off nuclei is difficult to detect using liquid xenon-based dm search instruments because the energy transfer during nuclear recoils is smaller than the typical detector threshold. however, the tree-level dm-nucleus scattering diagram can be accompanied by... | results of a search for sub-gev dark matter using 2013 lux data |
two-neutrino double electron capture (2νecec) is a second-order weak-interaction process with a predicted half-life that surpasses the age of the universe by many orders of magnitude1. until now, indications of 2νecec decays have only been seen for two isotopes2-5, 78kr and 130ba, and instruments with very low backgrou... | observation of two-neutrino double electron capture in 124xe with xenon1t |
in this article, we have considered an extension of the inert higgs doublet model with s u (2 )l singlet vectorlike fermions. our model is capable of addressing some interesting anomalous results in b →s ℓ+ℓ- decays [like r (k(*))] and in muon (g -2 ). apart from explaining these anomalies, and being consistent with ot... | correlating the anomalous results in b →s decays with inert higgs doublet dark matter and the muon g -2 |
we investigate simplified models of new physics that can accommodate the measured value of the anomalous magnetic moment of the muon and the relic density of dark matter. we define a set of renormalizable, su(2)×u(1) invariant extensions of the standard model, each comprising an inert &z; 2-odd scalar field and one or ... | expectations for the muon g - 2 in simplified models with dark matter |
motivated by the swampland de sitter conjecture, we consider a rolling scalar field as the source of dark energy. furthermore, the swampland distance conjecture suggests that the rolling field will lead at late times to an exponentially light tower of states. identifying this tower as residing in the dark sector sugges... | h0 tension, swampland conjectures, and the epoch of fading dark matter |
the coherent experiment located in neutrino alley at the spallation neutron source (sns), oak ridge national laboratory (ornl), has made the world's first two measurements of coherent elastic neutrino-nucleus scattering (cevns), on csi and argon, using neutrinos produced at the sns. the coherent collaboration continues... | the coherent experimental program |
we propose simple models with a flavor-dependent global u(1)ℓ and a discrete &z;2 symmetries to explain the anomalies in the measured anomalous magnetic dipole moments of muon and electron, (g - 2)μ,e, while simultaneously accommodating a dark matter candidate. these new symmetries are introduced not only to avoid the ... | an explanation for the muon and electron g - 2 anomalies and dark matter |
we present a new mechanism of baryogenesis and dark matter production in which both the dark matter relic abundance and the baryon asymmetry arise from neutral b meson oscillations and subsequent decays. this setup is testable at hadron colliders and b factories. in the early universe, decays of a long lived particle p... | baryogenesis and dark matter from b mesons |
detection mechanisms for low mass bosonic dark matter candidates, such as the axion or hidden photon, leverage potential interactions with electromagnetic fields, whereby the dark matter (of unknown mass) on rare occasion converts into a single photon. current dark matter searches operating at microwave frequencies use... | searching for dark matter with a superconducting qubit |
numerous astrophysical and cosmological observations are best explained by the existence of dark matter, a mass density which interacts only very weakly with visible, baryonic matter. searching for the extremely weak signals produced by this dark matter strongly motivate the development of new, ultra-sensitive detector... | mechanical quantum sensing in the search for dark matter |
lenstronomy is an astropy-affiliated python package for gravitational lensing simulations and analyses. lenstronomy was introduced by birrer and amara (2018) and is based on the linear basis set approach by birrer et a. (2015). the user and developer base of lenstronomy has substantially grown since then, and the softw... | lenstronomy ii: a gravitational lensing software ecosystem |
if the reheating temperature at the end of inflation is low, of order 10 mev, then dark matter produced through ultraviolet freeze-in has a large direct detection cross section. we study such a scenario in which dark matter is hadrophilic. this leads to dark matter-nucleon scattering cross sections of interest for near... | freezing-in hadrophilic dark matter at low reheating temperatures |
in this paper, we extensively analyzed the reheating dynamics after inflation and looked into its possible implication on dark matter (dm) and inflaton phenomenology. we studied the reheating through various possible channels of inflaton going into massless scalars (bosonic reheating) and fermions (fermionic reheating)... | wimps, fimps, and inflaton phenomenology via reheating, cmb and ∆neff |
the kinetic mixing (km) portal is a popular mechanism that allows light dark matter (dm) in the mass range below ∼1 gev to achieve the observed relic density by thermal means and can be effectively described by only a few parameters, e.g., ε , the strength of this km. in the simplest setup, the standard model (sm) u (1... | kinetic mixing, dark higgs triplets, and mw |
we present a micrometer scale, on-chip integrated, plasmonic enhanced graphene photodetector (gpd) for telecom wavelengths operating at zero dark current. the gpd is designed and optimized to directly generate a photovoltage and has an external responsivity~12.2v/w with a 3db bandwidth~42ghz. we utilize au split-gates ... | waveguide-integrated, plasmonic enhanced graphene photodetectors |
the biological pump transports organic matter, created by phytoplankton productivity in the well-lit surface ocean, to the ocean's dark interior, where it is consumed by animals and heterotrophic microbes and remineralized back to inorganic forms. this downward transport of organic matter sequesters carbon dioxide from... | quantifying the ocean's biological pump and its carbon cycle impacts on global scales |
using the planck 2015 data release (pr2) temperature maps, we separate galactic thermal dust emission from cosmic infrared background (cib) anisotropies. for this purpose, we implement a specifically tailored component-separation method, the so-called generalized needlet internal linear combination (gnilc) method, whic... | planck intermediate results. xlviii. disentangling galactic dust emission and cosmic infrared background anisotropies |
the qcd axion is a leading dark matter candidate that emerges as part of the solution to the strong c p problem in the standard model. the coupling of the axion to photons is the most common experimental probe, but much parameter space remains unexplored. the coupling of the qcd axion to the standard model scales linea... | proposal for a definitive search for gut-scale qcd axions |
the hypothetical axion particle (of unknown mass) is a leading candidate for dark matter (dm). many experiments search for axions with microwave cavities, where an axion may convert into a cavity photon, leading to a feeble excess in the output power of the cavity. recent work [backes et al., nature 590, 238 (2021)] ha... | entangled sensor-networks for dark-matter searches |
dilute-gas bose-einstein condensates are an exceptionally versatile test bed for the investigation of novel solitonic structures. while matter-wave solitons in one- and two-component systems have been the focus of intense research efforts, an extension to three components has never been attempted in experiments. here, ... | three-component soliton states in spinor f =1 bose-einstein condensates |
we report the effects of entropic corrections to the friedmann equations on the growth of perturbations in the early stages of the universe. we consider two types of corrections to the area law of entropy, known as tsallis and barrow entropy. using these corrections to entropy, we derive the modified friedmann equation... | growth of perturbations in tsallis and barrow cosmology |
very recently, a fermilab report of muon g− 2 showed a 4.2σ 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 supersymmetric stan... | improved (g − 2)μ measurement and singlino dark matter in μ-term extended &z;3-nmssm |
conventional scenarios of purely gravitationally produced dark matter with masses below the hubble parameter at the end of inflation are in tension with cosmic microwave background (cmb) constraints on the isocurvature power spectrum. we explore a more general scenario with a nonminimal coupling between the scalar dark... | new window into gravitationally produced scalar dark matter |
we study confining dark sectors where the lightest hadrons are glueballs. such models can provide viable dark matter candidates and appear in some neutral naturalness scenarios. in this work, we introduce a new phenomenological model of dark glueball hadronization inspired by the lund string model. this enables us to m... | dark sector glueballs at the lhc |
classical first-passage times under restart are used in a wide variety of models, yet the quantum version of the problem still misses key concepts. we study the quantum hitting time with restart using a monitored quantum walk. the restart strategy eliminates the problem of dark states, i.e., cases where the particle ev... | restart expedites quantum walk hitting times |
applying the ashok-denef-douglas estimation method to elliptic calabi-yau fourfolds suggests that a single elliptic fourfold {m}_{max } gives rise to o({10}^{272,000}) f-theory flux vacua, and that the sum total of the numbers of flux vacua from all other f-theory geometries is suppressed by a relative factor of o({10}... | the f-theory geometry with most flux vacua |
we present a new strong lensing (sl) model of the hubble frontier fields (hff) galaxy cluster abell 2744, at z = 0.3072, by exploiting archival hubble space telescope (hst) multiband imaging and multi unit spectroscopic explorer (muse) follow-up spectroscopy. the lens model considers 90 spectroscopically confirmed mult... | new high-precision strong lensing modeling of abell 2744. preparing for jwst observations |
a search for narrow and broad resonances with masses greater than 1.8 tev decaying to a pair of jets is presented. the search uses proton-proton collision data at √{s } = 13 tev collected at the lhc, corresponding to an integrated luminosity of 137 fb-1. the background arising from standard model processes is predicted... | search for high mass dijet resonances with a new background prediction method in proton-proton collisions at √{s } = 13 tev |
a real singlet scalar, connected to the standard model sector through a portal with the higgs boson, is one of the simplest and most popular models for dark matter (dm). however, the experimental advances in direct and indirect dm searches, together with the latest results from the lhc, have ruled out vast areas of the... | reopening the higgs portal for single scalar dark matter |
the charge degree of freedom in solid-state defects fundamentally underpins the electronic spin degree of freedom, a workhorse of quantum technologies. here we measure, analyze, and control charge-state behavior in individual near-surface nitrogen-vacancy (nv) centers in diamond, where nv- hosts the metrologically rele... | identifying and mitigating charge instabilities in shallow diamond nitrogen-vacancy centers |
in this report, we demonstrate high spectral responsivity (sr) in mbe grown epitaxial β-ga2o3-based solar blind metal-semiconductor-metal (msm) photodetectors (pd). the (-201)-oriented β-ga2o3 thin film was grown using plasma-assisted mbe on c-plane sapphire substrates. msm devices fabricated with ni/au contacts in an ... | high responsivity in molecular beam epitaxy grown β-ga2o3 metal semiconductor metal solar blind deep-uv photodetector |
we use muse spectroscopic observations of the dwarf spheroidal galaxy leo t between 470 and 935 nm to search for radiative decays of axion like particles (alps). under the assumption that alps constitute the dark matter component of the leo t halo, we derive bounds on the effective alp-two-photon coupling. we improve e... | searching for light in the darkness: bounds on alp dark matter with the optical muse-faint survey |
the evidence for a new neutral scalar particle from the 750 gev diphoton excess, and the absence of any other signal of new physics at the lhc so far, suggests the existence of new coloured scalars. to study this possibility, we propose a supersymmetry inspired simplified model, extending the standard model with a sing... | a susy inspired simplified model for the 750 gev diphoton excess |
we examine the recently reported low-energy electron recoil spectrum observed at the xenon1t underground dark matter direct detection experiment, in the context of new interactions with solar neutrinos. in particular we show that scalar and vector mediators with masses ≲50 kev coupled to leptons could already leave a v... | light new physics in xenon1t |
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