abstract stringlengths 3 192k | title stringlengths 4 857 |
|---|---|
this paper is devoted to the tunneling radiation and quantum gravity effect on tunneling radiation of neutral regular black hole in rastall gravity. we analyzed the tunneling radiation and hawking temperature of neutral regular black hole by applying the hamilton-jacobi ansatz phenomenon. lagrangian wave equation have ... | gravitational analysis of neutral regular black hole in rastall gravity |
the next generation of gravitational-wave experiments, such as einstein telescope, cosmic explorer and lisa, will test the primordial black hole scenario. we provide a forecast for the minimum testable value of the abundance of primordial black holes as a function of their masses for both the unclustered and clustered ... | the minimum testable abundance of primordial black holes at future gravitational-wave detectors |
we show that simple two higgs doublet models might still provide a viable explanation for the matter-antimatter asymmetry of the universe via electroweak baryogenesis, even after taking into account the recent order-of-magnitude improvement on the electron-edm experimental bound by the acme collaboration. moreover we s... | a second higgs doublet in the early universe: baryogenesis and gravitational waves |
the jet breaks in the afterglow light curves of short gamma-ray bursts (sgrbs), rarely detected so far, are crucial for estimating the half-opening angles of the ejecta (θ j) and hence the neutron star merger rate. in this work, we report the detection of jet decline behaviors in grb 150424a and grb 160821b, and find θ... | short grbs: opening angles, local neutron star merger rate, and off-axis events for grb/gw association |
compact objects occupy a pivotal role in the exploration of nature. the interest spans from the role of compact objects in astrophysics to their detection through various methods (gravitational waves interferometry, microlensing, imaging). while the existence of compact objects made of fermions (neutron stars and white... | boson stars and oscillatons: a review |
this paper presents an efficient numerical sensitivity-estimation method and implementation for continuous-gravitational-wave searches, extending and generalizing an earlier analytic approach by wette [1]. this estimation framework applies to a broad class of f -statistic-based search methods, namely (i) semi-coherent ... | fast and accurate sensitivity estimation for continuous-gravitational-wave searches |
we formulate cosmological perturbation theory around the spatially curved flrw background in the context of metric-affine gauge theory of gravity which includes torsion and nonmetricity. performing scalar-vector-tensor decomposition of the spatial perturbations, we find that the theory displays a rich perturbation spec... | cosmological perturbation theory in metric-affine gravity |
we develop the first model for extreme mass-ratio inspirals (emris) with misaligned angular momentum and primary spin, and zero eccentricity -- also known as quasi-spherical inspirals -- evolving under the influence of the first-order in mass ratio gravitational self-force. the forcing terms are provided by an efficien... | self-forced inspirals with spin-orbit precession |
a number of works have shown that important information on the equation of state of matter at nuclear density can be extracted from the gravitational waves emitted by merging neutron-star binaries. we present a comprehensive analysis of the gravitational-wave signal emitted during the inspiral, merger, and postmerger o... | gravitational-wave signal from binary neutron stars: a systematic analysis of the spectral properties |
we propose a new model to generate large anisotropies in the scalar-induced gravitational wave (sigw) background via sound speed resonance in the inflaton-curvaton mixed scenario. cosmological curvature perturbations are not only exponentially amplified at a resonant frequency, but also preserve significant non-gaussia... | anisotropies in scalar-induced gravitational-wave background from inflaton-curvaton mixed scenario with sound speed resonance |
we study the detectability of postmerger qcd phase transitions in neutron star binaries with next-generation gravitational-wave detectors cosmic explorer and einstein telescope. we perform numerical relativity simulations of neutron star mergers with equations of state that include a quark deconfinement phase transitio... | detectability of qcd phase transitions in binary neutron star mergers: bayesian inference with the next generation gravitational wave detectors |
traditional gravity measurements use bulk masses to both source and probe gravitational fields1. matter-wave interferometers enable the use of probe masses as small as neutrons2, atoms3 and molecular clusters4, but still require fields generated by masses ranging from hundreds of kilograms5,6 to the entire earth. shrin... | testing sub-gravitational forces on atoms from a miniature in-vacuum source mass |
squeezing of the electromagnetic vacuum is an essential metrological technique used to reduce quantum noise in applications spanning gravitational wave detection, biological microscopy and quantum information science. in superconducting circuits, the resonator-based josephson-junction parametric amplifiers conventional... | broadband squeezed microwaves and amplification with a josephson travelling-wave parametric amplifier |
detecting gravitational waves with frequencies higher than 10 khz requires new strategies. in previous papers, we proposed magnon gravitational wave detectors and gave the first limit on gigahertz gravitational waves by reinterpreting the existing data from axion dark matter experiments. in this paper, we show that the... | exploring high-frequency gravitational waves with magnons |
unusual masses of black holes being discovered by gravitational wave experiments pose fundamental questions about the origin of these black holes. black holes with masses smaller than the chandrasekhar limit ≈1.4 m⊙ are essentially impossible to produce through stellar evolution. we propose a new channel for production... | low mass black holes from dark core collapse |
the dark matter (dm) distributed around an intermediate massive black hole (imbh) forms an overdensity region called dm minispike. we consider the binary system which consists of an imbh with dm minispike and a small black hole inspiralling around the imbh in eccentric orbits. the factors which affect the evolution of ... | intermediate mass-ratio inspirals with dark matter minispikes |
galactic nuclei are promising sites for stellar origin black hole (bh) mergers, as part of merger hierarchies in deep potential wells. we show that binary black hole (bbh) merger rates in active galactic nuclei (agns) should always exceed merger rates in quiescent galactic nuclei (nuclear star clusters, nscs) around su... | binary black hole merger rates in agn discs versus nuclear star clusters: loud beats quiet |
the space-based laser interferometers, lisa, taiji and tianqin, are targeting to observe millihz gravitational waves (gws) in the 2030s. the joint observations from multiple space-based detectors yield significant advantages. in this work, we recap the studies and investigations for the joint space-based gw detector ne... | on networks of space-based gravitational-wave detectors |
we report results on the first matched-filtering search for binaries with compact objects having large tidal deformabilities in the ligo-virgo gravitational wave (gw) data. the tidal deformability of a body is quantified by the ``love number" $\lambda \propto \hskip 1pt (r/m)^5$, where $r/m$ is the body's (inverse) com... | in pursuit of love: first templated search for compact objects with large tidal deformabilities in the ligo-virgo data |
gravitational waves have become an irreplaceable tool for exploring the post-inflationary universe. their cosmological and astrophysical origins have been attracting numerous attention. in this letter, we point out a novel source of ultra-high frequency gravitational waves: the decay of particles produced during the re... | gravitational waves from particle decays during reheating |
the accretion disks that fuel active galactic nuclei (agn) may house numerous stars and compact objects, formed in situ or captured from nearby star clusters. embedded neutron stars and black holes may form binaries and eventually merge, emitting gravitational waves detectable by ligo/virgo. agn disks are a particularl... | the evolution of inclined binary black holes in the disks of active galactic nuclei |
hierarchical bayesian inference can simultaneously account for both measurement uncertainty and selection effects within astronomical catalogs. in particular, the hierarchy imposed encodes beliefs about the interdependence of the physical processes that generate the observed data. we show that several proposed approxim... | dagnabbit! ensuring consistency between noise and detection in hierarchical bayesian inference |
we investigate the reach of future gravitational wave (gw) detectors in probing inflaton couplings with visible sector particles that can either be bosonic or fermionic in nature. assuming reheating takes place through perturbative quantum production from vacuum in presence of classical inflaton background field, we fi... | measuring inflaton couplings via primordial gravitational waves |
we present a generalisation of the curative initial data construction derived for equal-mass compact binaries in helfer et al (2019 phys. rev. d 99 044046; 2022 class. quantum grav. 39 074001) to arbitrary mass ratios. we demonstrate how these improved initial data avoid substantial spurious artifacts in the collision ... | unequal-mass boson-star binaries: initial data and merger dynamics |
the component black holes (bhs) observed in gravitational-wave (gw) binary black hole (bbh) events tend to be more massive and slower spinning than those observed in black hole x-ray binaries (bh-xrbs). without modeling their evolutionary histories, we investigate whether these apparent tensions in the bh populations c... | apples and oranges: comparing black holes in x-ray binaries and gravitational-wave sources |
accurate gravitational-wave (gw) signal models exist for black hole binary (bbh) and neutron-star binary (bns) systems, which are consistent with all of the published gw observations to date. detections of a third class of compact-binary systems, neutron-star black hole (nsbh) binaries, have not yet been confirmed, but... | modeling the gravitational wave signature of neutron star black hole coalescences |
effective field theory methods suggest that some rather general extensions of general relativity include, or are mimicked by, certain higher-order curvature corrections, with coupling constants expected to be small but otherwise arbitrary. thus, the tantalizing prospect to test the fundamental nature of gravity with gr... | black holes in an effective field theory extension of general relativity |
the combination of optical time transfer and optical clocks opens up the possibility of large-scale free-space networks that connect both ground-based optical clocks and future space-based optical clocks. such networks promise better tests of general relativity1-3, dark-matter searches4 and gravitational-wave detection... | quantum-limited optical time transfer for future geosynchronous links |
waveform models are essential for gravitational-wave (gw) detection and parameter estimation of coalescing compact-object binaries. more accurate models are required for the increasing sensitivity of current and future gw detectors. the effective-one-body (eob) formalism combines the post-newtonian (pn) and small mass-... | theoretical groundwork supporting the precessing-spin two-body dynamics of the effective-one-body waveform models seobnrv5 |
due to superradiant instabilities, clouds of ultralight bosons can spontaneously grow around rotating black holes, creating so-called "gravitational atoms". in this work, we study their dynamical effects on binary systems. we first focus on open orbits, showing that the presence of a cloud can increase the cross sectio... | dynamical friction in gravitational atoms |
binary neutron star mergers are considered to be the most favourable sources that produce electromagnetic (em) signals associated with gravitational waves (gws). these mergers are the likely progenitors of short duration gamma-ray bursts (grbs). the brief gamma-ray emission (the `prompt' grb emission) is produced by ul... | off-axis short grbs from structured jets as counterparts to gw events |
<p class="p">in this study, we examine the diurnal cycle of rainfall over new guinea using a series of convection-permitting numerical simulations with the weather research and forecasting (wrf) model. we focus our simulations on a period of suppressed regional-scale conditions (february 2010) during which local ... | the diurnal cycle of rainfall over new guinea in convection-permitting wrf simulations |
massive neutron stars (nss) with lifetimes of at least several seconds are expected to be the result of a sizable fraction of ns mergers. we study their formation using a large set of numerical relativity simulations. we show that they are initially endowed with angular momentum that significantly exceeds the mass-shed... | long-lived remnants from binary neutron star mergers |
we consider a standard model extension equipped with a dark sector where the u(1) xabelian gauge symmetry is spontaneously broken by the dark higgs mechanism. in this framework, we investigate patterns of the electroweak phase transition as well as those of the dark phase transition, and examine detectability of gravit... | gravitational waves from first order electroweak phase transition in models with the u(1) xgauge symmetry |
we describe the quantum test of the equivalence principle and space time (qtest), a concept for an atom interferometry mission on the international space station (iss). the primary science objective of the mission is a test of einstein’s equivalence principle with two rubidium isotope gases at a precision of better tha... | quantum test of the equivalence principle and space-time aboard the international space station |
small, highly absorbing points are randomly present on the surfaces of the main interferometer optics in advanced ligo. the resulting nano-meter scale thermo-elastic deformations and substrate lenses from these micron-scale absorbers significantly reduces the sensitivity of the interferometer directly though a reductio... | point absorbers in advanced ligo |
the joint detection of gravitational waves (gws) and electromagnetic radiation from the binary neutron star (bns) merger gw170817 has provided unprecedented insight into a wide range of physical processes: heavy element synthesis via the r-process; the production of relativistic ejecta; the equation of state of neutron... | a precise distance to the host galaxy of the binary neutron star merger gw170817 using surface brightness fluctuations |
solitonic boson stars are stable objects made of a complex scalar field with a compactness that can reach values comparable to that of neutron stars. a recent study of the collision of identical boson stars produced only nonrotating boson stars or black holes, suggesting that rotating boson stars may not form from bina... | gravitational wave signatures of highly compact boson star binaries |
we use holography to analyze relativistic collisions in a one-parameter family of strongly coupled gauge theories with thermal phase transitions. for a critical value of the parameter, the transition is second order, for subcritical values it is first order, and for supercritical values it a smooth crossover. we extrac... | holographic collisions across a phase transition |
we present the first advanced ligo and advanced virgo search for ultracompact binary systems with component masses between 0.2 m⊙- 1.0 m⊙ using data taken between september 12, 2015 and january 19, 2016. we find no viable gravitational wave candidates. our null result constrains the coalescence rate of monochromatic (d... | search for subsolar-mass ultracompact binaries in advanced ligo's first observing run |
we identify a binary black hole (bbh) merger that appears to be multiply lensed by an intervening galaxy. the ligo/virgo events gw170809 and gw170814 have indistinguishable waveforms separated by 5 days, and overlap on the sky within the 90\% credible region. their strain amplitudes are also similar, implying a modest ... | twin ligo/virgo detections of a viable gravitationally-lensed black hole merger |
we present accurate fits for the remnant properties of generically precessing binary black holes, trained on large banks of numerical-relativity simulations. we use gaussian process regression to interpolate the remnant mass, spin, and recoil velocity in the seven-dimensional parameter space of precessing black-hole bi... | high-accuracy mass, spin, and recoil predictions of generic black-hole merger remnants |
the baryon asymmetry of the universe is one of the central motivations to expect physics beyond the standard model. in this snowmass white paper, we review the challenges and opportunities in testing some of the central paradigms that predict physics at scales low enough to expect new experimental data in the next deca... | theories and experiments for testable baryogenesis mechanisms: a snowmass white paper |
we present the results of numerical simulations of the prompt emission of short-duration gamma-ray bursts. we consider emission from the relativistic jet, the mildly relativistic cocoon, and the non-relativistic shocked ambient material. we find that the cocoon material is confined between off-axis angles 15≲ θ ≲ 45^\c... | off-axis prompt x-ray transients from the cocoon of short gamma-ray bursts |
advanced ligo and advanced virgo's newly released gwtc-2 catalog of gravitational-wave detections offers unprecedented information about the spin magnitudes and orientations of merging binary black holes (bbhs). notably, analysis of the bbh population suggests the presence of binaries whose component spins are signific... | state of the field: binary black hole natal kicks and prospects for isolated field formation after gwtc-2 |
the review summarizes much of particle physics and cosmology. using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered higgs boson, leptons, quarks, mesons, and baryons. we summarize searches for hypoth... | review of particle physics |
the review summarizes much of particle physics and cosmology. using data from previous editions, plus 3,062 new measurements from 721 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered higgs boson, leptons, quarks, mesons, and baryons. we summarize searches for hypoth... | review of particle physics |
the review summarizes much of particle physics and cosmology. using data from previous editions, plus 2,873 new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered higgs boson, leptons, quarks, mesons, and baryons. we summarize searches for hypoth... | review of particle physics* |
the review summarizes much of particle physics and cosmology. using data from previous editions, plus 3,324 new measurements from 878 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered higgs boson, leptons, quarks, mesons, and baryons. we summarize searches for hypoth... | review of particle physics |
this article reviews recent developments in tests of fundamental physics using atoms and molecules, including the subjects of parity violation, searches for permanent electric dipole moments, tests of the c p t theorem and lorentz symmetry, searches for spatiotemporal variation of fundamental constants, tests of quantu... | search for new physics with atoms and molecules |
weakly interacting massive particles (wimps) are among the best-motivated dark matter candidates. no conclusive signal, despite an extensive search program that combines, often in a complementary way, direct, indirect, and collider probes, has been detected so far. this situation might change in near future due to the ... | the waning of the wimp? a review of models, searches, and constraints |
axions and other very light axion-like particles appear in many extensions of the standard model, and are leading candidates to compose part or all of the missing matter of the universe. they also appear in models of inflation, dark radiation, or even dark energy, and could solve some long-standing astrophysical anomal... | new experimental approaches in the search for axion-like particles |
photon emitters placed in an optical cavity experience an environment that changes how they are coupled to the surrounding light field. in the weak-coupling regime, the extraction of light from the emitter is enhanced. but more profound effects emerge when single-emitter strong coupling occurs: mixed states are produce... | single-molecule strong coupling at room temperature in plasmonic nanocavities |
measurements of the fine-structure constant α require methods from across subfields and are thus powerful tests of the consistency of theory and experiment in physics. using the recoil frequency of cesium-133 atoms in a matter-wave interferometer, we recorded the most accurate measurement of the fine-structure constant... | measurement of the fine-structure constant as a test of the standard model |
the physics beyond colliders initiative is an exploratory study aimed at exploiting the full scientific potential of the cern's accelerator complex and scientific infrastructures through projects complementary to the lhc and other possible future colliders. these projects will target fundamental physics questions in mo... | physics beyond colliders at cern: beyond the standard model working group report |
self-supervised learning, dubbed the dark matter of intelligence, is a promising path to advance machine learning. yet, much like cooking, training ssl methods is a delicate art with a high barrier to entry. while many components are familiar, successfully training a ssl method involves a dizzying set of choices from t... | a cookbook of self-supervised learning |
we report a new search for weakly interacting massive particles (wimps) using the combined low background data sets acquired in 2016 and 2017 from the pandax-ii experiment in china. the latest data set contains a new exposure of 77.1 live days, with the background reduced to a level of 0.8 ×10-3 evt /kg /day , improved... | dark matter results from 54-ton-day exposure of pandax-ii experiment |
the standard model of particle physics accurately describes all particle physics measurements made so far in the laboratory. however, it is unable to answer many questions that arise from cosmological observations, such as the nature of dark matter and why matter dominates over antimatter throughout the universe. theor... | improved limit on the electric dipole moment of the electron |
the fermilab muon g −2 experiment recently reported its first measurement of the anomalous magnetic moment aμfnal, which is in full agreement with the previous bnl measurement and pushes the world average deviation ∆aμ2021 from the standard model to a significance of 4.2σ. here we provide an extensive survey of its imp... | new physics explanations of aμ in light of the fnal muon g − 2 measurement |
we report on a blinded analysis of low-energy electronic recoil data from the first science run of the xenonnt dark matter experiment. novel subsystems and the increased 5.9 ton liquid xenon target reduced the background in the (1, 30) kev search region to (15.8 ±1.3 ) events/(ton ×year×kev ) , the lowest ever achieved... | search for new physics in electronic recoil data from xenonnt |
we examine the theoretical motivations for long-lived particle (llp) signals at the lhc in a comprehensive survey of standard model (sm) extensions. llps are a common prediction of a wide range of theories that address unsolved fundamental mysteries such as naturalness, dark matter, baryogenesis and neutrino masses, an... | long-lived particles at the energy frontier: the mathusla physics case |
we report the weakly interacting massive particle (wimp) dark matter search results using the first physics-run data of the pandax-ii 500 kg liquid xenon dual-phase time-projection chamber, operating at the china jinping underground laboratory. no dark matter candidate is identified above background. in combination wit... | dark matter results from first 98.7 days of data from the pandax-ii experiment |
this report provides an extensive review of the experimental programme of direct detection searches of particle dark matter. it focuses mostly on european efforts, both current and planned, but does it within a broader context of a worldwide activity in the field. it aims at identifying the virtues, opportunities and c... | direct detection of dark matter-appec committee report |
we perform a global fit of electroweak data, finding that the anomaly in the w mass claimed by the cdf collaboration can be reproduced as a universal new-physics correction to the t parameter or |h†dμh|2 operator. contributions at tree-level from multi-tev new physics can fit the anomaly compatibly with collider bounds... | interpreting electroweak precision data including the w-mass cdf anomaly |
we present a major upgrade of the micromegas dark matter code to compute the abundance of feebly interacting dark matter candidates through the freeze-in mechanism in generic extensions of the standard model of particle physics. we develop the necessary formalism in order to solve the freeze-in boltzmann equations whil... | micromegas5.0 : freeze-in |
we report the first dark matter search results using the commissioning data from pandax-4t. using a time projection chamber with 3.7 tonne of liquid xenon target and an exposure of 0.63 tonne .year , 1058 candidate events are identified within an approximate nuclear recoil energy window between 5 and 100 kev. no signif... | dark matter search results from the pandax-4t commissioning run |
the ability to perform entangling quantum operations with low error rates in a scalable fashion is a central element of useful quantum information processing1. neutral-atom arrays have recently emerged as a promising quantum computing platform, featuring coherent control over hundreds of qubits2,3 and any-to-any gate c... | high-fidelity parallel entangling gates on a neutral-atom quantum computer |
unlike the electroweak sector of the standard model of particle physics, quantum chromodynamics (qcd) is surprisingly symmetric under time reversal. as there is no obvious reason for qcd being so symmetric, this phenomenon poses a theoretical problem, often referred to as the strong cp problem. the most attractive solu... | calculation of the axion mass based on high-temperature lattice quantum chromodynamics |
the dark photon is a massive hypothetical particle that interacts with the standard model by kinetically mixing with the visible photon. for small values of the mixing parameter, dark photons can evade cosmological bounds to be a viable dark matter candidate. due to the similarities with the electromagnetic signals gen... | dark photon limits: a handbook |
particle physics today faces the challenge of explaining the mystery of dark matter, the origin of matter over anti-matter in the universe, the origin of the neutrino masses, the apparent fine-tuning of the electro-weak scale, and many other aspects of fundamental physics. perhaps the most striking frontier to emerge i... | feebly-interacting particles: fips 2022 workshop report |
the dark photon is a new gauge boson whose existence has been conjectured. it is dark because it arises from a symmetry of a hypothetical dark sector comprising particles completely neutral under the standard model interactions. dark though it is, this new gauge boson can be detected because of its kinetic mixing with ... | the dark photon |
a permanent electric dipole moment (edm) of a particle or system is a separation of charge along its angular momentum axis and is a direct signal of t violation and, assuming c p t symmetry, c p violation. for over 60 years edms have been studied, first as a signal of a parity-symmetry violation and then as a signal of... | electric dipole moments of atoms, molecules, nuclei, and particles |
we report the results from a haloscope search for axion dark matter in the 3.3 - 4.2 μ ev mass range. this search excludes the axion-photon coupling predicted by one of the benchmark models of "invisible" axion dark matter, the kim-shifman-vainshtein-zakharov model. this sensitivity is achieved using a large-volume cav... | search for invisible axion dark matter in the 3.3 -4.2 μ ev mass range |
we search for single-photon events in 53 fb-1 of e+e- collision data collected with the babar detector at the pep-ii b -factory. we look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle a' through the process e+e-→γ a' ; a'→invisible . ... | search for invisible decays of a dark photon produced in e+e- collisions at babar |
this thesis reports on the search for dark matter in data taken with the atlas detector at cern's large hadron collider (lhc). the identification of dark matter and the determination of its properties are among the highest priorities in elementary particle physics and cosmology. the most likely candidate, a weakly inte... | search for dark matter produced in association with a higgs boson decaying to two bottom quarks at atlas |
atomic clocks are vital in a wide array of technologies and experiments, including tests of fundamental physics1. clocks operating at optical frequencies have now demonstrated fractional stability and reproducibility at the 10−18 level, two orders of magnitude beyond their microwave predecessors2. frequency ratio measu... | frequency ratio measurements at 18-digit accuracy using an optical clock network |
nanostructured semiconductors emit light from electronic states known as excitons. for organic materials, hund’s rules state that the lowest-energy exciton is a poorly emitting triplet state. for inorganic semiconductors, similar rules predict an analogue of this triplet state known as the ‘dark exciton’. because dark ... | bright triplet excitons in caesium lead halide perovskites |
run 2 lhc data show hints of a new resonance in the diphoton distribution at an invariant mass of 750 gev. we analyse the data in terms of a new boson, extracting information on its properties and exploring theoretical interpretations. scenarios covered include a narrow resonance and, as preliminary indications suggest... | what is the γγ resonance at 750 gev? |
the new cdf ii measurement of w-boson mass shows a 7 σ deviation from the standard model (sm) prediction, while the recent fnal measurement of the muon g - 2 shows a 4.2 σ deviation (combined with the bnl result) from the sm. both of them strongly indicate new physics beyond the sm. in this work, we study the implicati... | low energy susy confronted with new measurements of w-boson mass and muon g - 2 |
this paper describes the physics case for a new fixed target facility at cern sps. the ship (search for hidden particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below the fermi scale, inaccessible to the lhc experiments, and to st... | a facility to search for hidden particles at the cern sps: the ship physics case |
micromegas is a code to compute dark matter observables in generic extensions of the standard model. this version of micromegas includes a generalization of the boltzmann equations to take into account the possibility of two dark matter candidates. the modification of the relic density calculation to include interactio... | micromegas4.1: two dark matter candidates |
with the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the lhc, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a new phy... | feebly-interacting particles: fips 2020 workshop report |
results are presented from a search for particle dark matter (dm), extra dimensions, and unparticles using events containing a jet and an imbalance in transverse momentum. the data were collected by the cms detector in proton-proton collisions at the lhc and correspond to an integrated luminosity of 19.7at a centre-of-... | search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at |
a plausible explanation for the lightness of neutrino masses is that neutrinos are massless at tree level, with their mass (typically majorana) being generated radiatively at one or more loops. the new couplings, together with the suppression coming from the loop factors, imply that the new degrees of freedom cannot be... | from the trees to the forest: a review of radiative neutrino mass models |
a search for invisible decays of a higgs boson is performed using proton-proton collision data collected with the cms detector at the lhc in 2016 at a center-of-mass energy √{ s } = 13tev, corresponding to an integrated luminosity of 35.9fb-1. the search targets the production of a higgs boson via vector boson fusion. ... | search for invisible decays of a higgs boson produced through vector boson fusion in proton-proton collisions at √{ s } = 13tev |
a new general purpose fixed target facility is proposed at the cern sps accelerator which is aimed at exploring the domain of hidden particles and make measurements with tau neutrinos. hidden particles are predicted by a large number of models beyond the standard model. the high intensity of the sps 400~gev beam allows... | a facility to search for hidden particles (ship) at the cern sps |
a search for sub-gev dark matter production mediated by a new vector boson a', called a dark photon, is performed by the na64 experiment in missing energy events from 100 gev electron interactions in an active beam dump at the cern sps. from the analysis of the data collected in the years 2016, 2017, and 2018 with 2.84... | dark matter search in missing energy events with na64 |
we calculate the production of a massive vector boson by quantum fluctuations during inflation. this gives a novel dark-matter production mechanism quite distinct from misalignment or thermal production. while scalars and tensors are typically produced with a nearly scale-invariant spectrum, surprisingly the vector is ... | vector dark matter from inflationary fluctuations |
the axion has emerged in recent years as a leading particle candidate to provide the mysterious dark matter in the cosmos, as we review here for a general scientific audience. we describe first the historical roots of the axion in the standard model of particle physics and the problem of charge-parity invariance of the... | axion dark matter: what is it and why now? |
the axion is a promising dark matter candidate, which was originally proposed to solve the strong-c p problem in particle physics. to date, the available parameter space for axion and axionlike particle dark matter is relatively unexplored, particularly at masses ma≲1 μ ev . abracadabra is a new experimental program to... | first results from abracadabra-10 cm: a search for sub-μ ev axion dark matter |
the axion is a light pseudoscalar particle postulated to solve issues with the standard model, including the strong cp problem and the origin of dark matter. in recent years, there has been remarkable progress in the physics of axions in several directions. an unusual type of axion-like particle termed the relaxion was... | recent progress in the physics of axions and axion-like particles |
we report on the results from a search for dark matter axions with the haystac experiment using a microwave cavity detector at frequencies between 5.6 and 5.8 ghz. we exclude axion models with two photon coupling ga γ γ≳2 ×10-14 gev-1 , a factor of 2.7 above the benchmark ksvz model over the mass range 23.15 <ma<... | results from phase 1 of the haystac microwave cavity axion experiment |
several hints of the presence of a new state at about 95 gev have been observed recently. the cms and atlas collaborations have reported excesses in the diphoton channel at about this diphoton invariant mass with local statistical significances of 2.9 σ and 1.7 σ , respectively. furthermore, a 2 σ excess in the b b ¯ f... | scotogenic explanation for the 95 gev excesses |
the standard model of particle physics is remarkably successful because it is consistent with (almost) all experimental results. however, it fails to explain dark matter, dark energy and the imbalance between matter and antimatter in the universe. because discrepancies between standard-model predictions and experimenta... | determination of the fine-structure constant with an accuracy of 81 parts per trillion |
the deep underground neutrino experiment (dune) will be a powerful tool for a variety of physics topics. the high-intensity proton beams provide a large neutrino flux, sampled by a near detector system consisting of a combination of capable precision detectors, and by the massive far detector system located deep underg... | prospects for beyond the standard model physics searches at the deep underground neutrino experiment |
atomically thin transition metal dichalcogenides are direct-gap semiconductors with strong light-matter and coulomb interactions. the latter accounts for tightly bound excitons, which dominate their optical properties. besides the optically accessible bright excitons, these systems exhibit a variety of dark excitonic s... | excitonic linewidth and coherence lifetime in monolayer transition metal dichalcogenides |
this document is the final report of the atlas-cms dark matter forum, a forum organized by the atlas and cms collaborations with the participation of experts on theories of dark matter, to select a minimal basis set of dark matter simplified models that should support the design of the early lhc run-2 searches. a prior... | dark matter benchmark models for early lhc run-2 searches: report of the atlas/cms dark matter forum |
the manipulation of quantum states of light1 holds the potential to enhance searches for fundamental physics. only recently has the maturation of quantum squeezing technology coincided with the emergence of fundamental physics searches that are limited by quantum uncertainty2,3. in particular, the quantum chromodynamic... | a quantum enhanced search for dark matter axions |
at the present time (2022), there are discrepancies with the predictions of the standard model in several observables involving b → sℓ+ℓ- and decays. these are the b flavor anomalies. in this review, we summarize the data as of moriond 2021 and present theoretical new physics explanations from both a model-independent ... | b flavor anomalies: 2021 theoretical status report |
we study a lepton portal dark matter model, motivated by the deviation of the w boson mass reported by the cdf collaboration. we introduce vectorlike leptons and a scalar dark matter (dm) that exclusively couples to the extra leptons and muon. the one-loop corrections induced by the new particles can shift the w boson ... | w boson mass and muon g -2 in a lepton portal dark matter model |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.