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collective strong coupling between a disordered ensemble of n localized molecular vibrations and a resonant optical cavity mode gives rise to two polariton and n -1 ≫2 dark modes. thus, experimental changes in thermally activated reaction kinetics due to polariton formation appear entropically unlikely and remain a puz... | catalysis by dark states in vibropolaritonic chemistry |
in effective quantum field theory, a spin-1 vector boson can have a technically natural small mass that does not originate from the higgs mechanism. for such theories, which may be written in stückelberg form, there is no point in field space at which the mass is exactly zero. i argue that quantum gravity differs from,... | photon masses in the landscape and the swampland |
organic-inorganic halide perovskites (oihps) bring an unprecedented opportunity for radiation detection with their defect-tolerance nature, large mobility-lifetime product, and simple crystal growth from solution. here we report a dopant compensation in alloyed oihp single crystals to overcome limitations of device noi... | dopant compensation in alloyed ch3nh3pbbr3-xclx perovskite single crystals for gamma-ray spectroscopy |
the simultaneous ground-state cooling of multiple degenerate or near-degenerate mechanical modes coupled to a common cavity-field mode has become an outstanding challenge in cavity optomechanics. this is because the dark modes formed by these mechanical modes decouple from the cavity mode and prevent extracting energy ... | nonreciprocal ground-state cooling of multiple mechanical resonators |
using the first law of thermodynamics, we propose a relation between the system entropy ( s) and its ir ( l) and uv (λ ) cutoffs. in addition, applying this relation to the apparent horizon of flat frw universe, whose entropy meets the rényi entropy, a new holographic dark energy model is addressed. thereinafter, the e... | thermodynamic approach to holographic dark energy and the rényi entropy |
the goal of forward search experiment (faser) at the lhc is to discover light, weakly interacting particles with a small and inexpensive detector placed in the far-forward region of atlas or cms. a promising location in an unused service tunnel 480 m downstream of the atlas interaction point (ip) has been identified. p... | axionlike particles at faser: the lhc as a photon beam dump |
new light vectors with dimension-4 couplings to standard model states have (energy/vectormass)2-enhanced production rates unless the current they couple to is conserved. these processes allow us to derive new constraints on the couplings of such vectors, that are significantly stronger than the previous literature for ... | dark forces coupled to nonconserved currents |
we report the first results on a direct search for a new 16.7 mev boson (x ) which could explain the anomalous excess of e+e- pairs observed in the excited <mml:mmultiscripts>be* 8 </mml:mmultiscripts> nucleus decays. because of its coupling to electrons, the x could be produced in the bremsstrahlung reacti... | search for a hypothetical 16.7 mev gauge boson and dark photons in the na64 experiment at cern |
we present the results of a systematic study of the constraints on neutrino neutral-current nonstandard interactions (nsis) that can be obtained from the analysis of the coherent spectral and temporal data. first, we consider the general case in which all ten relevant neutral-current nsi parameters are considered as fr... | general coherent constraints on neutrino nonstandard interactions |
searches are performed for both promptlike and long-lived dark photons, a' , produced in proton-proton collisions at a center-of-mass energy of 13 tev. these searches look for a'→μ+μ- decays using a data sample corresponding to an integrated luminosity of 5.5 fb-1 collected with the lhcb detector. neither search finds ... | search for a'→μ+μ- decays |
carroll symmetry arises from poincaré symmetry upon taking the limit of vanishing speed of light. we determine the constraints on the energy-momentum tensor implied by carroll symmetry and show that for energy-momentum tensors of perfect fluid form, these imply an equation of state ${\cal e}+p=0$ for energy density plu... | carroll symmetry, dark energy and inflation |
we propose an inclusive search for dark photons a' at the lhcb experiment based on both prompt and displaced dimuon resonances. because the couplings of the dark photon are inherited from the photon via kinetic mixing, the dark photon a'→μ+μ- rate can be directly inferred from the off-shell photon γ*→μ+μ- rate, making ... | proposed inclusive dark photon search at lhcb |
we review how the muon anomalous magnetic moment ($g-2$) and the quest for lepton flavor violation are intimately correlated. indeed the decay $\mu \to e \gamma$ is induced by the same amplitude for different choices of in- and outgoing leptons. in this work, we try to address some intriguing questions such as: which h... | a call for new physics : the muon anomalous magnetic moment and lepton flavor violation |
the silicon-photomultiplier (sipm) is becoming the device of choice for different applications, for example in fast timing like in time of flight positron emission tomography (tof-pet) and in high energy physics (hep). it is also becoming a choice in many single-photon or few-photon based applications, like for spectro... | understanding and simulating sipms |
in this paper, tunable dual plasmon-induced transparency (pit) is achieved by using a monolayer graphene metamaterial in the terahertz region, which consists of two graphene strips of different sizes and a graphene ring. as the dual pit effect is induced by the destructive interference between the two quasi-dark modes ... | tunable dual plasmon-induced transparency based on a monolayer graphene metamaterial and its terahertz sensing performance |
one proposed component of the upcoming deep underground neutrino experiment (dune) near detector complex is a multi-purpose, magnetized, gaseous argon time projection chamber: the multi-purpose detector (mpd). we explore the new-physics potential of the mpd, focusing on scenarios in which the mpd is significantly more ... | searches for decays of new particles in the dune multi-purpose near detector |
a timely and long-term programme of kaon decay measurements at a new level of precision is presented, leveraging the capabilities of the cern super proton synchrotron (sps). the proposed programme is firmly anchored on the experience built up studying kaon decays at the sps over the past four decades, and includes rare... | hike, high intensity kaon experiments at the cern sps |
faser, the forward search experiment, is a proposed experiment dedicated to searching for light, extremely weakly-interacting particles at the lhc. such particles may be produced in the lhc's high-energy collisions in large numbers in the far-forward region and then travel long distances through concrete and rock witho... | faser: forward search experiment at the lhc |
the decay of the majority of radioactive isotopes involves the emission of gamma (γ) photons with energies of ∼50 kev to 10 mev. detectors of such hard radiation that are low-cost, highly sensitive and operate at ambient temperatures are desired for numerous applications in defence and medicine, as well as in research.... | detection of gamma photons using solution-grown single crystals of hybrid lead halide perovskites |
ammonia-oxidizing archaea (aoa) are one of the most abundant groups of microbes in the world’s oceans and are key players in the nitrogen cycle. their energy metabolism—the oxidation of ammonia to nitrite—requires oxygen. nevertheless, aoa are abundant in environments where oxygen is undetectable. by carrying out incub... | oxygen and nitrogen production by an ammonia-oxidizing archaeon |
we discuss greenland ice sheet (gris) surface mass balance (smb) differences between the updated polar version of the racmo climate model (racmo2.3) and the previous version (racmo2.1). among other revisions, the updated model includes an adjusted rainfall-to-snowfall conversion that produces exclusively snowfall under... | evaluation of the updated regional climate model racmo2.3: summer snowfall impact on the greenland ice sheet |
faser, forward search experiment at the lhc, has been proposed as a small, very far forward detector to discover new, light, weakly-coupled particles. previous work showed that with a total volume of just ∼0.1 - 1 m3 , faser can discover dark photons in a large swath of currently unconstrained parameter space, extendin... | dark higgs bosons at the forward search experiment |
we propose a search for dark photons a' at the lhcb experiment using the charm meson decay d*(2007 )0→d0a'. at nominal luminosity, d*0→d0γ decays will be produced at about 700 khz within the lhcb acceptance, yielding over 5 trillion such decays during run 3 of the lhc. replacing the photon with a kinetically mixed dark... | dark photons from charm mesons at lhcb |
in this short note we comment on the relation between the cosmological and the kaluza-klein mass scale in the dark dimension scenario [1], also in view of some recent claims [2] that would raise some doubts about the validity of this scenario. here we argue that these claims have serious flaws and cannot be trusted. | on the cosmological constant, the kk mass scale, and the cut-off dependence in the dark dimension scenario |
theories beyond the standard model involving a sub-gev-scale vector zd mediator have been largely studied as a possible explanation of the experimental values of the muon and electron anomalous magnetic moments. motivated by the recent determination of the anomalous muon magnetic moment performed at fermilab, we derive... | muon and electron g -2 and proton and cesium weak charges implications on dark zd models |
we show that one of the simplest extensions of the standard model, the addition of a second higgs doublet, when combined with a dark sector singlet scalar, allows us to i ) explain the long-standing anomalies in the liquid scintillator neutrino detector (lsnd) and miniboone (mb) while maintaining compatibility with the... | two-higgs doublet solution to the lsnd, miniboone and muon g -2 anomalies |
an inclusive search for long-lived exotic particles decaying to a pair of muons is presented. the search uses data collected by the cms experiment at the cern lhc in proton-proton collisions at √{s } = 13 tev in 2016 and 2018 and corresponding to an integrated luminosity of 97.6 fb−1. the experimental signature is a pa... | search for long-lived particles decaying to a pair of muons in proton-proton collisions at √{s } = 13 tev |
we show that in a special class of dark sector models, the hydrogen atom can serve as a portal to new physics, through its decay occurring in abundant populations in the sun and on earth. the large fluxes of hydrogen decay daughter states can be detected via their decay or scattering. by constructing two models for eit... | hydrogen portal to exotic radioactivity |
next generation neutrino oscillation experiments like dune and t2hk are multi-purpose observatories, with a rich physics program beyond oscillation measurements. a special role is played by their near detector facilities, which are particularly well-suited to search for weakly coupled dark sector particles produced in ... | searching for physics beyond the standard model in an off-axis dune near detector |
we propose a new beam-dump experiment at a future tev-scale muon collider. a beam dump would be an economical and effective way to increase the discovery potential of the collider complex in a complementary regime. in this letter, we consider vector models such as the dark photon and lμ-lτ gauge boson as new physics ca... | probing new gauge forces with a high-energy muon beam dump |
muone is a proposed experiment designed to measure the hadronic vacuum polarization contribution to muon g -2 through elastic μ -e scattering. as such, it employs an extremely high-resolution tracking apparatus. we point out that this makes muone also a very promising experiment to search for displaced vertices from li... | dark photons and displaced vertices at the muone experiment |
the taishan antineutrino observatory (tao, also known as juno-tao) is a satellite experiment of the jiangmen underground neutrino observatory (juno). a ton-level liquid scintillator detector will be placed at about 30 m from a core of the taishan nuclear power plant. the reactor antineutrino spectrum will be measured w... | tao conceptual design report: a precision measurement of the reactor antineutrino spectrum with sub-percent energy resolution |
we study the framework of u(1) xmodels with kinetic mixing and/or mass mixing terms. we give general and exact analytic formulas of fermion gauge interactions and the cross sections of neutrino-electron scattering in such models. then we derive limits on a variety of u(1) xmodels that induce new physics contributions t... | neutrino-electron scattering: general constraints on z'and dark photon models |
we describe the observations and resultant galaxy cluster catalog from the 2770 deg2 sptpol extended cluster survey (spt-ecs). clusters are identified via the sunyaev-zel'dovich (sz) effect and confirmed with a combination of archival and targeted follow-up data, making particular use of data from the dark energy surve... | the sptpol extended cluster survey |
using the tsallis generalized entropy, holographic hypothesis and also considering the hubble horizon as the ir cutoff, we build a holographic model for dark energy and study its cosmological consequences in the brans-dicke framework. at first, we focus on a non-interacting universe, and thereinafter, we study the resu... | tsallis holographic dark energy in the brans-dicke cosmology |
we study a model where quintessence potential e-ξϕ coupled to higgs potential. we calculate the evolution of the quintessence, and track the running of the effective higgs self coupling. we find it slightly larger than that of the standard model in the past. requiring the electroweak vacuum to be absolutely stable in i... | quintessence saves higgs instability |
the discovery of cosmic acceleration has triggered a consistent body of theoretical work aimed at modeling its phenomenology and understanding its fundamental physical nature. in recent years, a powerful formalism that accomplishes both these goals has been developed, the so-called effective field theory of dark energy... | effective field theory of dark energy: a review |
the late-time behavior of our universe is one of accelerated expansion, or that of a de sitter space, and therefore motivates us to look for time-dependent backgrounds. finding such backgrounds in string theory has always been a challenging problem. an even harder problem is to find time-dependent backgrounds that allo... | de sitter vacua in the string landscape |
bimetric theory describes gravitational interactions in the presence of an extra spin-2 field. previous work has suggested that its cosmological solutions are generically plagued by instabilities. we show that by taking the planck mass for the second metric, mf, to be small, these instabilities can be pushed back to un... | bimetric gravity is cosmologically viable |
the na62 experiment at the cern sps reports a study of a sample of 4 × 109 tagged π0 mesons from k+ → π+π0(γ), searching for the decay of the π0 to invisible particles. no signal is observed in excess of the expected background fluctuations. an upper limit of 4.4 × 10-9 is set on the branching ratio at 90% confidence l... | search for π0 decays to invisible particles |
we present two galaxy shape catalogues from the dark energy survey year 1 data set, covering 1500 deg2 with a median redshift of 0.59. the catalogues cover two main fields: stripe 82, and an area overlapping the south pole telescope survey region. we describe our data analysis process and in particular our shape measur... | dark energy survey year 1 results: weak lensing shape catalogues |
it has recently been speculated that the nanograv observations point towards a first-order phase transition in the dark sector at the gev scale [1]. here, we show that such a phase transition might already have been predicted in the hot new early dark energy model (hot nede) [2,3]. there, it was argued that two dark se... | nanograv meets hot new early dark energy and the origin of neutrino mass |
many well-motivated extensions of the standard model predict the existence of new light species that may have been produced in the early universe. prominent examples include axions, sterile neutrinos, gravitinos, dark photons, and more. the gravitational influence of light relics leaves imprints in the cosmic microwave... | the physics of light relics |
we present the joint analysis of neutral hydrogen (h i) intensity mapping observations with three galaxy samples: the luminous red galaxy (lrg) and emission line galaxy (elg) samples from the eboss survey, and the wigglez dark energy survey sample. the h i intensity maps are green bank telescope observations of the red... | h i constraints from the cross-correlation of eboss galaxies and green bank telescope intensity maps |
we present a new mechanism to deplete the energy density of the qcd axion, making decay constants as high as fa≃ 1017 gev viable for generic initial conditions. in our setup, the axion couples to a massless dark photon with a coupling that is moderately stronger than the axion coupling to gluons. dark photons are produ... | opening up the qcd axion window |
searches are performed for both promptlike and long-lived dark photons, a', produced in proton-proton collisions at a center-of-mass energy of 13 tev, using a'→μ+μ- decays and a data sample corresponding to an integrated luminosity of 1.6 fb-1 collected with the lhcb detector. the promptlike a' search covers the mass r... | search for dark photons produced in 13 tev p p collisions |
we constrain the mass-richness scaling relation of redmapper galaxy clusters identified in the dark energy survey year 1 data using weak gravitational lensing. we split clusters into 4 × 3 bins of richness λ and redshift z for λ ≥ 20 and 0.2 ≤ z ≤ 0.65 and measure the mean masses of these bins using their stacked weak ... | dark energy survey year 1 results: weak lensing mass calibration of redmapper galaxy clusters |
harvesting environmental energy to generate electricity is a key scientific and technological endeavour of our time. photovoltaic conversion and electromechanical transduction are two common energy-harvesting mechanisms based on, respectively, semiconducting junctions and piezoelectric insulators. however, the differen... | photoflexoelectric effect in halide perovskites |
deep-ultraviolet (duv) photodetectors are fundamental building blocks in many solid-state duv optoelectronics, and their success relies on continuous innovations in semiconductor materials and the physics of device structures. overcoming the technological obstacles in narrow-bandgap silicon-based optoelectronics (photo... | a review of ga2o3 deep-ultraviolet metal-semiconductor schottky photodiodes |
a search for events with a dark photon produced in association with a dark higgs boson via rare decays of the standard model z boson is presented, using 139 fb-1 of √{s }=13 tev proton-proton collision data recorded by the atlas detector at the large hadron collider. the dark boson decays into a pair of dark photons, a... | search for dark photons in rare z boson decays with the atlas detector |
we propose a new search for light scalar singlets in rare meson decays. for couplings well below the electroweak interaction strength, the scalar is long-lived at detector scales and decays into displaced pairs of leptons or light mesons. we show that belle ii has a remarkable potential to probe scalars in the gev rang... | probing dark sectors with long-lived particles at belle ii |
taking the recently reported nonzero rotation angle of the cosmic microwave background (cmb) linear polarization β =0.35 ±0.14 deg as the hint for a pseudo-nambu-goldstone boson quintessence dark energy (de), we study the electroweak (ew) axion quintessence de model where the axion mass is generated by the ew instanton... | cosmic birefringence and electroweak axion dark energy |
a dark energy-like component in the early universe, known as early dark energy (ede), is a proposed solution to the hubble tension. currently, there is no consensus in the literature as to whether ede can simultaneously solve the hubble tension and provide an adequate fit to the data from the cosmic microwave backgroun... | new constraint on early dark energy from planck and boss data using the profile likelihood |
in most theoretical descriptions of collective strong coupling of organic molecules to a cavity mode, the molecules are modeled as simple two-level systems. this picture fails to describe the rich structure provided by their internal rovibrational (nuclear) degrees of freedom. we investigate a first-principles model th... | cavity-induced modifications of molecular structure in the strong-coupling regime |
two of the most widely studied extensions of the standard model (sm) are a) the addition of a new u(1) symmetry to its existing gauge groups, and b) the expansion of its scalar sector to incorporate a second higgs doublet. we show that when combined, they allow us to understand the electron-like event excess seen in th... | understanding the miniboone and the muon and electron g - 2 anomalies with a light z' and a second higgs doublet |
we develop four-parameter supergravity models of inflation and dark energy, constrained so that δ ρ /ρ nsand the cosmological constant λ take their known observable values, but where the mass of gravitino m 3/2 and the tensor-to-scalar ratio r are free parameters. we focus on generalized cosmological α-attractor models... | α-attractors: planck, lhc and dark energy |
standard model, with its present precision, predicts the neutron β -decay time τ _sm = 878.7 ± 0.6 s which is perfectly compatible with the neutron lifetime measured in the trap experiments τ _trap = 879.4 ± 0.6 s. however, the lifetime measured in the beam experiments via counting the protons produced by β -decay n→ p... | neutron lifetime puzzle and neutron-mirror neutron oscillation |
we present the anisotropic clustering of emission-line galaxies (elgs) from the sloan digital sky survey iv (sdss-iv) extended baryon oscillation spectroscopic survey (eboss) data release 16 (dr16). our sample is composed of 173 736 elgs covering an area of 1170 deg2 over the redshift range 0.6 ≤ z ≤ 1.1. we use the co... | the completed sdss-iv extended baryon oscillation spectroscopic survey: growth rate of structure measurement from anisotropic clustering analysis in configuration space between redshift 0.6 and 1.1 for the emission-line galaxy sample |
this is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the cosmic frontier of the division of particles and fields community summer study long-term planning exercise. experiments planned and underway are prepared to study the cosmologic... | neutrino physics from the cosmic microwave background and large scale structure |
the results of a search for π 0 decays to a photon and an invisible massive dark photon at the na62 experiment at the cern sps are reported. from a total of 4.12 × 108 tagged π 0 mesons, no signal is observed. assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a ... | search for production of an invisible dark photon in π 0 decays |
we provide an ultraviolet (uv) complete model for the r( d (∗)) anomalies, in which the additional contribution to semi-tauonic b → c transitions arises from decay to a right-handed sterile neutrino via exchange of a tev-scale su(2) lsinglet w '. the model is based on an extension of the standard model (sm) hypercharge... | r( d (∗)) from w ' and right-handed neutrinos |
we argue for a relation between the supersymmetry breaking scale and the measured value of the dark energy density λ. we derive it by combining two quantum gravity consistency swampland constraints, which tie the dark energy density λ and the gravitino mass m3/2, respectively, to the mass scale of a light kaluza-klein ... | the scale of supersymmetry breaking and the dark dimension |
in presence of non-standard neutrino interactions the neutrino flavor evolution equation is affected by a degeneracy which leads to the so-called lma-dark solution. it requires a solar mixing angle in the second octant and implies an ambiguity in the neutrino mass ordering. non-oscillation experiments are required to b... | curtailing the dark side in non-standard neutrino interactions |
ongoing and future imaging surveys represent significant improvements in depth, area, and seeing compared to current data sets. these improvements offer the opportunity to discover up to three orders of magnitude more galaxy-galaxy strong lenses than are currently known. in this work we forecast the number of lenses th... | the population of galaxy-galaxy strong lenses in forthcoming optical imaging surveys |
the w-boson mass (mw = (80.4335 ± 0.0094) gev) measured by the collider detector at fermilab collaboration is greater than the standard model (sm) prediction at a confidence level of 7σ, strongly suggesting the presence of new particles or fields. in the literature, various new particles and/or fields have been introdu... | is the w-boson mass enhanced by the axion-like particle, dark photon, or chameleon dark energy? |
we study the sensitivity of current and future long-baseline neutrino oscillation experiments to the effects of dimension six operators affecting neutrino propagation through earth, commonly referred to as non-standard interactions (nsi). all relevant parameters entering the oscillation probabilities (standard and non-... | non-standard interactions in propagation at the deep underground neutrino experiment |
we present a catalog of 689 galaxy cluster candidates detected at significance $\xi>4$ via their thermal sunyaev-zel'dovich (sz) effect signature in 95 and 150 ghz data from the 500-square-degree sptpol survey. we use optical and infrared data from the dark energy camera and the wide-field infrared survey explorer (... | galaxy clusters discovered via the thermal sunyaev-zel'dovich effect in the 500-square-degree sptpol survey |
a broad program of searches at high intensity experiments during the coming decade and beyond will sensitively probe new light mediator particles interacting through the minimal renormalizable vector, higgs, and neutrino portals as well as higher-dimension axion-like particle portals. these portals may link the visible... | exploring dark sector portals with high intensity experiments |
in this work, we propose a novel search strategy for new physics at the lhc that utilizes calorimeter jets that (i) are composed dominantly of displaced tracks and (ii) have many different vertices within the jet cone. such emerging jet signatures are smoking guns for models with a composite dark sector where a parton ... | emerging jets |
we describe the derivation and validation of redshift distribution estimates and their uncertainties for the populations of galaxies used as weak-lensing sources in the dark energy survey (des) year 1 cosmological analyses. the bayesian photometric redshift (bpz) code is used to assign galaxies to four redshift bins be... | dark energy survey year 1 results: redshift distributions of the weak-lensing source galaxies |
an observational program focused on the high redshift (2<z<6) universe has the opportunity to dramatically improve over upcoming lss and cmb surveys on measurements of both the standard cosmological model and its extensions. using a fisher matrix formalism that builds upon recent advances in lagrangian perturbati... | cosmology at high redshift - a probe of fundamental physics |
the dark energy survey (des) is a five-year optical imaging campaign with the goal of understanding the origin of cosmic acceleration. des performs a ∼5000 deg2 survey of the southern sky in five optical bands (g, r, i, z, y) to a depth of ∼24th magnitude. contemporaneously, des performs a deep, time-domain survey in f... | the dark energy survey image processing pipeline |
context. the quest for the cosmological parameters that describe our universe continues to motivate the scientific community to undertake very large survey initiatives across the electromagnetic spectrum. over the past two decades, the chandra and xmm-newton observatories have supported numerous studies of x-ray-select... | the xxl survey. i. scientific motivations - xmm-newton observing plan - follow-up observations and simulation programme |
in this paper we investigate how to describe in a unified way a constant-roll inflationary era with a dark energy era, by using the theoretical framework of f (r) gravity. to this end, we introduce some classes of appropriately chosen f (r) gravity models, and we examine in detail how the unification of early and late-... | unification of constant-roll inflation and dark energy with logarithmic r2-corrected and exponential f(r) gravity |
we describe the survey design, calibration, commissioning, and emission-line detection algorithms for the hobby-eberly telescope dark energy experiment (hetdex). the goal of hetdex is to measure the redshifts of over a million lyα emitting galaxies between 1.88 < z < 3.52, in a 540 deg2 area encompassing a comovi... | the hobby-eberly telescope dark energy experiment (hetdex) survey design, reductions, and detections |
early dark energy (ede) is a prominent model to resolve the hubble tension, which employs a dynamical axion with a periodic potential. in this work, we take first steps towards the embedding of this model into stable compactifications of string theory. first, we provide a pedagogical review of the ede scenario and its ... | towards early dark energy in string theory |
the proposed darkquest beam dump experiment, a modest upgrade to the existing seaquest/spinquest experiment, has great potential for uncovering new physics within a dark sector. we explore both the near-term and long-term prospects for observing two distinct, highly-motivated hidden sector benchmark models: heavy neutr... | dark scalars and heavy neutral leptons at darkquest |
primordial non-gaussianities (pngs) are signatures in the density field that encode particle physics processes from the inflationary epoch. such signatures have been extensively studied using the cosmic microwave background, through constraining the amplitudes, $f^{x}_{\rm nl}$, with future improvements expected from l... | primordial non-gaussianities with weak lensing: information on non-linear scales in the ulagam full-sky simulations |
belle ii has reported the first evidence for $b^+ \to k^+\nu\bar\nu$ with a branching ratio $2.7 \sigma$ higher than the standard model expectation. we explain this, and the miniboone and muon anomalous magnetic moment anomalies in a model with a dark scalar that couples to a slightly heavier sterile dirac neutrino and... | $b \\to k \\nu\\bar\\nu$, miniboone and muon $g-2$ anomalies from a dark sector |
we review and update constraints on the early dark energy (ede) model from cosmological data sets, in particular planck pr3 and pr4 cosmic microwave background (cmb) data and large-scale structure (lss) data sets including galaxy clustering and weak lensing data from the dark energy survey, subaru hyper suprime-cam, an... | observational constraints on early dark energy |
we present the emission line galaxy (elg) sample of the extended baryon oscillation spectroscopic survey from the sloan digital sky survey iv data release 16. we describe the observations and redshift measurement for the 269 243 observed elg spectra, and then present the large-scale structure catalogues, used for the c... | the completed sdss-iv extended baryon oscillation spectroscopic survey: large-scale structure catalogues and measurement of the isotropic bao between redshift 0.6 and 1.1 for the emission line galaxy sample |
in this article, we study the implications of string swampland criteria for dark energy in view of ongoing and future cosmological observations. if string theory should be the ultimate quantum gravity theory, there is evidence that exact de sitter solutions with a positive cosmological constant cannot describe the fate... | dark energy in the swampland |
we investigate constraints on the hubble constant (h0) using baryon acoustic oscillations (bao) and baryon density measurements from big bang nucleosynthesis (bbn). we start by investigating the tension between galaxy bao measurements and those using the lyman-α forest, within a bayesian framework. using the latest res... | baryon acoustic oscillations and the hubble constant: past, present and future |
a possible manifestation of an additional light gauge boson a', named a dark photon, associated with a group u (1 )b -l , is studied in neutrino-electron scattering experiments. the exclusion plot on the coupling constant gb -l and the dark photon mass ma' is obtained. it is shown that the contributions of interference... | constraints on dark photon from neutrino-electron scattering experiments |
light absorbing particles (lap, e.g., black carbon, brown carbon, and dust) influence water and energy budgets of the atmosphere and snowpack in multiple ways. in addition to their effects associated with atmospheric heating by absorption of solar radiation and interactions with clouds, lap in snow on land and ice can ... | light-absorbing particles in snow and ice: measurement and modeling of climatic and hydrological impact |
a sample of $1.69\times 10^7$ fully reconstructed $\pi^0\to\gamma e^+e^-$ decay candidates collected by the na48/2 experiment at cern in 2003--2004 is analysed to search for the dark photon ($a'$) production in the $\pi^0\to\gamma a'$ decay followed by the prompt $a'\to e^+e^-$ decay. no signal is observed, and an excl... | search for the dark photon in $\\pi^0$ decays |
we model the supermassive dark object m 8 7* as a schwarzschild lens and study the variations in tangential, radial, and total (the product of tangential and radial) magnifications of images (primary, secondary, and relativistic) against the changes in angular source position and the ratio of lens-source to the observe... | distortions of images of schwarzschild lensing |
theseus is a space mission concept aimed at exploiting gamma-ray bursts for investigating the early universe and at providing a substantial advancement of multi-messenger and time-domain astrophysics. these goals will be achieved through a unique combination of instruments allowing grb and x-ray transient detection ove... | the theseus space mission concept: science case, design and expected performances |
faser is a proposed small and inexpensive experiment designed to search for light, weakly-interacting particles at the lhc. such particles are dominantly produced along the beam collision axis and may be long-lived, traveling hundreds of meters before decaying. to exploit both of these properties, faser is to be locate... | letter of intent for faser: forward search experiment at the lhc |
we explore the effects of considering various infrared (ir) cutoffs, including the particle horizon, the ricci horizon and the granda-oliveros (go) cutoffs, on the properties of tsallis holographic dark energy (thde) model, proposed inspired by tsallis generalized entropy formalism (tavayef et al. in phys lett b 781:19... | note on tsallis holographic dark energy |
semiconductor mixed-halide perovskites featured with a tunable energy bandgap are ideal candidates for light absorbers in tandem solar cells as well as fluorescent materials in light-emitting diodes and nanoscale lasers. these device advancements are currently hindered by the light-induced phase segregation effect, whe... | phase segregation due to ion migration in all-inorganic mixed-halide perovskite nanocrystals |
carbon fixation by chemoautotrophic microorganisms in the dark ocean has a major impact on global carbon cycling and ecological relationships in the ocean’s interior, but the relevant taxa and energy sources remain enigmatic. we show evidence that nitrite-oxidizing bacteria affiliated with the nitrospinae phylum are im... | major role of nitrite-oxidizing bacteria in dark ocean carbon fixation |
in this paper, we investigate the dark energy phenomenon by studying the tsallis holographic dark energy within the framework of brans-dicke (bd) scalar-tensor theory of gravity (brans and dicke in phys. rev. 124:925, 1961). in this context, we choose the bd scalar field ϕ as a logarithmic function of the average scale... | observational constraint on interacting tsallis holographic dark energy in logarithmic brans-dicke theory |
dynamical dark energy has been recently suggested as a promising and physical way to solve the 3 sigma tension on the value of the hubble constant h0 between the direct measurement of riess et al. (2016) (r16, hereafter) and the indirect constraint from cosmic microwave anisotropies obtained by the planck satellite und... | constraining dark energy dynamics in extended parameter space |
neutrinos may be the harbingers of new dark sectors, since the renormalizable neutrino portal allows for their interactions with hidden new physics. we propose here to use this fact to connect the generation of neutrino masses to a light dark sector, charged under a new u(1)d dark gauge symmetry. we introduce the minim... | neutrino masses and mixings dynamically generated by a light dark sector |
a common framework of particle physics consists of two sectors of particles, such as the standard model and a dark sector, with some interaction between them. in this work, we initiate the study of a qualitatively different setup in which one of the sectors is a topological quantum field theory (tqft). instead of parti... | coupling a cosmic string to a tqft |
understanding the direct transformation from graphite to diamond has been a long-standing challenge with great scientific and practical importance. previously proposed transformation mechanisms1-3, based on traditional experimental observations that lacked atomistic resolution, cannot account for the complex nanostruct... | coherent interfaces govern direct transformation from graphite to diamond |
local h_0 determinations currently fall in a window between h 0 ~ 70 km/s/mpc (trgb) and h 0 ~ 76 km/s/mpc (tully-fisher). in contrast, bao data calibrated in an early λcdm universe are largely consistent with planck-λcdm, h 0 ~ 67.5 km/s/mpc. employing a generic two parameter family of evolving equations of state (eos... | is local h 0 at odds with dark energy eft? |
the two kaon factories, koto and na62, are at the cutting edge of the intensity frontier, with an unprecedented numbers of long lived and charged kaons, ∼ 1013, being measured and analyzed. these experiments have currently a unique opportunity to search for dark sectors. in this paper, we demonstrate that searches done... | koto vs. na62 dark scalar searches |
alternative gravity is nowadays an extremely important tool to address some persistent observational issues, such as the dark sector of the universe. they can also be applied to stellar astrophysics, leading to outcomes one step ahead of those obtained through general relativity. in the present article we test a novel ... | wormholes in exponential f( r, t) gravity |
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