abstract stringlengths 3 192k | title stringlengths 4 857 |
|---|---|
the next generation of weakly interacting massive particle (wimp) dark matter (dm) detectors will be sensitive to coherent scattering of solar neutrinos from target nuclei, demanding an efficient background-signal discrimination tool. a directional detector would enable detection of wimp dm below the ''neutrino floor''... | directional dark matter detection in diamond: principles and experimental progress |
hubble's wfc3 has revealed ~2,000 z~6-11 candidates in the universe's first billion years, but only a small fraction have been bright enough (h<25.5) for detailed follow-up study and spectroscopic confirmation. the highest redshift searches (z~9-12) have yielded fewer candidates than expected, leaving luminosity fun... | relics: reionization lensing cluster survey |
the lz detector is a dual-phase time projection chamber (tpc) aiming to detect rare events resulting from the scattering of weakly interacting massive particles (wimps), a leading dark matter candidate. significant effort has been made to achieve an unprecedented low background rate within its fiducial volume, includin... | background studies for the lux-zeplin dark matter experiment |
the particle nature of dark matter remains one of the great open questions in physics. the axion has had a renaissance as a dark matter candidate as theoretical studies have improved our understanding of axion cosmology and advances in quantum sensing and cryogenics have opened new opportunities for detection. in this ... | axion dark matter and quantum measurement: abracadabra to dmradio |
type 5 å molecular sieves (ms) have been demonstrated to remove radon from sf6 gas. this is important for ultra-sensitive sf6 gas-based directional dark matter and related rare-event physics experiments, as radon can provide a source of unwanted background events. unfortunately, commercially available sieves intrinsica... | test of low radioactive molecular sieves for radon filtration in sf6 gas-based rare-event physics experiments |
axion-like particles (alps) are viable candidates for dark matter and can interact with the standard model photons through the primakoff scattering. this enables a search for alps in a beam dump experiment at a high-intensity beam facility, such as the rare isotope accelerator complex for on-line experiment (raon), und... | a simulation study of neutron production and moderation for axion-like particles (alps) search at rare isotope accelerator complex for on-line (raon) |
non-thermal production mechanisms could generate light bosonic dark matter (dm) particles. such dm candidates, the dark photons (dp), would interact with the standard model (sm) matter via absorption and emission of sm photons. dielectric haloscopes consist of thin dielectric layers with alternating high and low refrac... | making the invisible visible: search for dark photons using a dielectric multilayer haloscope |
numerous astrophysical observations strongly suggest the existence of dark matter, which provides a hint of dark sector physics. there could exist many dark candidates predicted by theories bsm, such as dark photons and invisible things, that communicate with the standard model sector. the masses and decay modes of the... | new physics beryond the sm at besiii |
the axion, a light pseudoscalar particle postulated as a solution to the strong cp problem of quantum chromodynamics, has emerged as a leading dark matter candidate. it is also predicted to mediate weak forces between fermions. the axion resonant interaction detection experiment (ariadne) uses nuclear magnetic resonanc... | source mass development for the axion resonant interaction detection experiment (ariadne) |
over its ten years of mission the large area telescope onboard the fermi gamma-ray space telescope has collected the largest ever sample of high-energy cosmic-ray electron and positron events. possible features in their energy spectrum could be a signature of the presence of nearby astrophysical sources or of more exot... | search for features in the cosmic-ray electron and positron spectrum measured by the fermi large area telescope |
the axion, a light pseudoscalar particle postulated as a solution to the strong cp problem of quantum chromodynamics, has emerged as a leading dark matter candidate. it is also predicted to mediate weak forces between fermions. the axion resonant interaction detection experiment (ariadne) uses nuclear magnetic resonanc... | source mass development for the axion resonant interaction detection experiment (ariadne) |
axion-like-particles (alps) are generalization of axions. supersymmetry predicts the existence of its fermionic super- partner, alpino. we study the detectability of alpino in the fixed target experiments by estimating the production and decay rate of neutralinos and the number of signals. we also clarify conditions fo... | probing for alpino dark matter at beam dump experiments |
the 2010-2012 operation period at the lhc has been very successful, including the discovery of a new particle with a mass of about 125 gev compatible within uncertainties with the higgs boson predicted by standard model. precise measurements of the properties of this boson, and the discovery of new physics beyond the s... | atlas physics prospects for the upgraded lhc |
the weakly interacting massive particle (wimp) is a popular particle physics candidate for the dark matter (dm). it can annihilate and/or decay to neutrino and antineutrino pair. the proposed 50 kt magnetized iron calorimeter (magical) detector at the india-based neutrino observatory (ino) can observe these pairs over ... | looking for galactic diffuse dark matter in ino-magical detector |
a search for gamma rays from dark matter annihilation comes up empty while improving constraints on parameters of candidate dark matter particles known as wimps. | ten-year search finds no signs of dark matter annihilation |
we investigated the viability of a logarithmic f(r) gravity in calculating the reheating temperature and describing dark matter. we discovered that the logarithmic model possessed a chameleon problem, and we addressed this by modifying the model to incorporate the r2 term from the starobinsky model. we examined the via... | chameleonic dark matter and reheating constraints in a logarithmic f(r) gravity |
the b-l symmetric susy model (b-lssm) introduces a new z' gauge boson and two singlet scalars, which indicates there are more neutralinos in the b-lssm comparing with the minimal susy extension of standard model (mssm). these new neutralinos provide more dark matter (dm) candidates in the b-lssm, we find that the super... | new dark matter candidate in the b -l symmetric ssm |
the two-higgs-doublet with additional scalar (2hdm$+s$) model is one proposed to account for several anomalies that have persisted and increased in significance over runs 1 and 2 at the large hadron collider (lhc). in addition to this, 2hdm+$s$ also supplies a potential dark matter (dm) candidate coupling to the standa... | multi-frequency probes of 2hdm+s dark matter |
the any light particle search ii (alps ii) is a light shining through a wall (lsw) experiment to search for axion-like particles. these particles are good candidates for explaining a part of the universe's dark matter composition as well as other physical mysteries such as photon propagation through the universe and la... | alps ii status |
detection and understanding of dark matter is one of the major unsolved problems of modern particle physics and cosmology. several theories of fundamental physics predict bosonic dark matter candidates that can modify maxwell's equations resulting in additional photon emission from conducting surfaces. one of these pro... | thz photon source testing for the bread experiment |
the nature of the scalar field responsible for the cosmological inflation is found to be rooted in the most fundamental concept of the weyl’s differential geometry: the parallel displacement of vectors in curved spacetime. within this novel geometrical scenario, the standard electroweak theory of leptons based on the s... | the quantum higgs field and the resolution of the cosmological constant paradox in the weyl-geometrical universe |
sterile neutrinos provide active neutrinos with masses and mixing, and hence is one of the well-motivated candidate for dark matter. we discuss the sterile neutrino production mechanisms operating in the early universe and show that additional scalar coupled to sterile neutrino can significantly change the situation, m... | sterile neutrino dark matter production |
astronomical and cosmological observations indicate that a large amount of the energy content of the universe is made of dark matter. the most promising dark matter candidates are the so-called weakly interacting massive particles. the search for these particles is performed with various experimental approaches. the xe... | status of the xenon project |
the standard model of particle physics is assumed to be a low-energy effective theory with new physics theoretically motivated to be around tev scale. the dissertation presents theories with new physics beyond the standard model at the tev scale testable in the current high energy colliders. the study on leptoquarks ga... | new physics at the tev scale |
the study of dark matter constraints from its effect on star evolution has been discussed in recent years. we propose a star evolution simulation approach to determine those costraints from properties related to star evolutionary stages and propose globular cluster observables in order to check those constraints. my wo... | dark matter constraints from stellar evolution |
we review the present theoretical status of particle dark matter, concentrating on two of the most attractive dark matter candidates: sterile neutrinos and weakly interacting massive particles. we review the basic theoretical aspects of each of these two scenarios as well as their observational signatures, with emphasi... | dark matter theory |
most of the matter in the universe is invisible and is known as dark matter (dm). weakly interacting massive particles (wimps) are possible theoretical candidates for dm. hypothetically, wimps can be detected indirectly by their annihilation or decay products. a possible product is a γ ray. many dm profile models predi... | search for galactic dark matter from γ-ray spectral lines with fermi-lat data |
quarks were introduced 50 years ago opening the road towards our understanding of the elementary constituents of matter and their fundamental interactions. since then, a spectacular progress has been made with important discoveries that led to the establishment of the standard theory that describes accurately the basic... | quarks and a unified theory of nature fundamental forces |
the lightest kaluza-klein particle (lkp), which appears in the theory of universal extra dimensions, is one of the good candidates for cold dark matter. the gamma-ray spectrum from annihilation of lkp dark matter shows a characteristic peak structure around the lkp mass. we investigate the detectability of this peak st... | the gamma-ray spectrum from annihilation of kaluza-klein dark matter and its observability |
the dama/libra{phase1 and the former dama/nai data (cumulative exposure 1:33 ton x yr, corresponding to 14 annual cycles) give evidence at 9.3 σ c.l. for the presence of dark matter (dm) particles in the galactic halo, on the basis of the exploited model independent dm annual modulation signature by using highly radiop... | recent results from dama/libra - phase1 and perspectives |
the higgs portal to scalar dark matter is considered in the context of non-linearly realised electroweak symmetry breaking. we determine the interactions of gauge bosons and the physical higgs particle $h$ to a scalar singlet dark matter candidate $s$ in an effective description. the main phenomenological differences w... | non-linear higgs portal to dark matter |
we study in a model independent way models of new physics featuring extra quarks (xqs). these xqs are predicted by extensions of the standard model (sm) but have never been observed yet even though many searches have been designed to find them at the lhc. after an introduction about the sm and the lhc, we present the m... | phenomenology of extra quarks at the lhc |
the existence of dark matter is undisputed, while the nature of it is still unknown. explaining dark matter with the existence of a new unobserved particle is among the most promising possible solutions. recently dark matter candidates in the mev mass region received more and more interest. in comparison to the mass re... | depfet detectors for direct detection of mev dark matter particles |
dark matter (dm) comprising particles in the mass range of a few mev to gev is waiting to be explored, given the many theoretical models accommodating cosmological abundance. we hereby propose an experiment with the lhc proton beam of 7 tev striking onto the beam dump target, emitting neutrinos and possibly, dark matte... | search for dark matter with lhc proton beam dump |
we explore the possibility that a super-light candidate for fuzzy (or wave) dark matter (fdm) may be a new composite boson state of fermions, rather than an axion-like bose-einstein condensate. we start from string-inspired massless majorana fermions χ thought as super-modulini fields from string compactifications. we ... | fuzzy dark matter and neutron majorana mass from gravitational instantons |
in contrast to wimps, light dark matter candidates have increasingly come under the focus of scientific interest. in particular the qcd axion is also able to solve other fundamental problems such as cp-conservation in strong interactions. galactic axions, axion-like particles and hidden photons can be converted to phot... | madmax: a new way of probing qcd axion dark matter with a dielectric haloscope -- foundations |
despite dark matter abundance, its nature remains elusive. many searches of dark matter particles are carried out using different technologies either via direct detection, indirect detection, or collider searches. in this work, the invisible higgs sector was investigated, where higgs bosons are produced via the vector ... | search for invisible higgs bosons produced via vector boson fusion at the lhc using the atlas detector |
in contrast to wimps, light dark matter candidates have increasingly come under the focus of scientific interest. in particular the qcd axion is also able to solve other fundamental problems such as cp-conservation in strong interactions. galactic axions, axion-like particles and hidden photons can be converted to phot... | madmax: a new way of probing qcd axion dark matter with a dielectric haloscope - foundations |
neutrinos (ν) are produced in practically all extragalactic astrophysical processes. they can travel enormous distances from remote parts of the universe at velocities near the speed of light. the interaction of neutrinos with both galactic and extragalactic particles may shed light on the composition of these particle... | does the dm background affect the propagation of extragalactic neutrinos? |
axions are a natural consequence of the peccei-quinn mechanism, the most compelling solution to the strong-cp problem. similar axion-like particles (alps) also appear in a number of possible extensions of the standard model, notably in string theories. both, axions and alps, are very well motivated candidates for dark ... | exploring the sun's core with babylaxo |
numerous astrophysical observations have indicated that dark matter constitutes about 27% of the mass and energy content of the universe. weakly interacting massive particles (wimps) are considered the most likely candidates for dark matter. the supercdms (cryogenic dark matter search) collaboration has pioneered the u... | photoneutron calibration of supercdms soudan izip detectors |
galaxy clusters mainly grow through mergers with other clusters and groups. major mergers give rise to important astrophysical phenomena such as the segregation of dark and luminous matter and the formation of cluster-wide traveling shocks and also drive galaxy evolution. the observable effects of shock waves can be se... | cooking a `sausage': the impact of merger shocks in cluster gas and galaxy evolution |
precise cosmological measurements provide strong evidence for the existence of dark matter, and estimate that it accounts for 85% of all the matter in our universe. axions are hypothetical, massive, spin-0 particles that were first postulated as an elegant solution to the strong cp problem in quantum chromodynamics. th... | the organ experiment: phase1a status and results |
axions are particles predicted to exist in order to explain the apparent smallness of the neutron electric dipole moment. while also being promising candidates for dark matter, in tabletop experiments axions can mediate short-range spin-dependent forces between objects. i will describe a new experiment for detecting sh... | the axion resonant interaction detection experiment (ariadne) |
low mass dark matter theories, if produced as a thermal relic in the early universe, must be accompanied by light mediators in order to obtain the dark matter abundance observed in the present day universe. these light mediators in turn provide a channel for the production of dark matter at fixed target neutrino experi... | searching for sub-gev dark matter at fixed target neutrino experiments |
while a suitable candidate particle for dark matter (dm) has yet to be discovered, it is possible one will be found by experiments currently investigating physics on the weak scale. if discovered on that energy scale, the dark matter will likely be producible in significant quantities at colliders like the lhc, allowin... | novel dark matter phenomenology at colliders |
the most convincing candidate as main constituent of the dark matter in the universe consists of weakly interacting massive particles (wimps). wimps must be electrically neutral and interact with a very low cross-section ( σ<10^{-40} cm2) which makes them detectable in direct searches only through the observation of... | news: nuclear emulsion wimp search |
in this work, several phenomenological models for extending the standard model are presented, with an emphasis on providing a candidate dark matter particle. these models are specifically designed as benchmark signals in two novel search channels proposed for lhc experiments: mono-z and mono-higgs. searches for dark ma... | lhc searches for dark matter and exotic resonances |
dark matter is an integral factor in the distribution of macro-scale galactic superstructures, as well as galaxy formation and evolution, though the properties of this matter remain largely unknown. theoretical majorana weakly interacting massive particles (wimps) serve as a primary candidate for dark matter. this stud... | evaluating wimp dark matter candidacy using distant astrophysical phenomena |
within the framework of the study of two-jet events, as one of the priority search channels for physics beyond the standard model, the effect of the sudakov factor on the production cross-section of the formation of two jets and the angular distribution of two-jet events at different energies was studied. for the higgs... | computer modeling of decay width and production cross sections for beyond sm particles |
in this paper we consider a spin-3/2 dark matter (dm) particle which couples to neutrinos, as a viable candidate to produce the observed dm relic density through the thermal freeze-out mechanism. the couplings of dm to neutrinos is considered first in a general dimension-6 effective field theory framework. we then cons... | neutrino specific spin-3/2 dark matter |
deformed shell model (dsm) based on hartree-fock intrinsic states is applied to address two current problems of interest. firstly, in the $f_{5/2}pg_{9/2}$ model space with jj44b effective interaction along with isospin projection, dsm is used to describe the structure of the recently observed low-lying $t=0$ and $t=1$... | deformed shell model study of heavy n=z nuclei and dark matter detection |
in this paper, we analyze scenario with strongly interacting massive particles which follows from the standard model extension with singlet quark. the lightest new neutral hadron is stable, it can be interpreted as a candidate for hadronic dark matter. here, we consider principal features of this scenario: large mass o... | the scenario with hadronic dark matter |
supersymmetric dark matter has been studied extensively in the context of the mssm, where gauginos have majorana masses. introducing dirac gaugino masses, we obtain an enriched phenomenology from which considerable differences in, e.g., lhc signatures can be expected. concretely, in the minimal dirac gaugino model (mdg... | new signatures of dirac neutralino dark matter |
the standard model (sm) of particle physics cannot explain the matter-antimatter asymmetry in the universe. especially, new sources of cp-violation are necessary, and this is why physics beyond the sm is being explored. the search for permanent electric dipole moments (edms) of elementary particles has the potential to... | electric dipole moment of charged particles using storage rings |
the recent results of icecube neutrino observatory include an excess of pev neutrino events which appear to follow a broken power law different from the other lower energy neutrinos detected by icecube. the possible astrophysical source of these neutrinos is still unknown. one possible source of such neutrinos could be... | estimation of baryon asymmetry from dark matter decaying into icecube neutrinos |
dark matter is one of the greatest mysteries of the universe. the attributes of the dark matter particles, which make up about 86% of the mass of our universe, are still obscure. lux zeplin (lz) will be the most sensitive direct detection dark matter experiment to detect the faint interactions between the dark and ordi... | the lux zeplin dark matter experiment |
we briefly review the arguments for a multicomponent dark matter scenario which contains both the higgsino of natural supersymmetry (susy) and one or both of two other well-motivated particles—the axion and the higgson. this scenario has become increasingly compelling because of increasingly strong constraints from exp... | present and potential future experimental evidence supporting a multicomponent dark matter scenario |
the interaction properties of cold dark matter particles candidates are known to lead to the structuring of dark matter on scales much smaller than typical galaxies. this translates into a large population of dark matter subhalos inside our galaxy, which impacts the predictions for direct and indirect searches. we pres... | dynamically constrained model of galactic subhalos and impact on dark matter searches |
we consider a class of models with extra complex scalars that are charged under both the standard model and a hidden strongly coupled $su(n)_h$ gauge sector and discuss the scenarios in which the new scalars are identified as the messenger fields that mediate the spontaneously broken supersymmetries from the hidden sec... | towards gauge unified, supersymmetric hidden strong dynamics |
searches for dark-matter particles at the gev mass scale has been receiving much attention in the last several years, partly motivated by the failure of direct and indirect searches of heavier candidates to produce a signal. the spinquest dimuon experiment in the 120-gev main-injector proton beam at fermilab, currently... | exploration of the dark sector with the fermilab dimuon experiment |
the cryogenic dark matter search experiment (cdms ii) used underground-based germanium and silicon detectors to search for the scattering of weakly interacting massive particles (wimps), which are among the leading candidates for the dark matter component of the universe. using the ionization and athermal phonons measu... | systematics of low threshold modulation searches in dms ii |
this thesis studies systematically non-supersymmetric models that contain dark matter candidates. the stability of the dark matter is guaranteed by a remnant z2 symmetry embedded naturally in so(10). we build models base on various dark matter production mechanism, including the non-equilibrium thermal dark matter scen... | dark matter models in non-supersymmetric so(10) unification models |
the large underground xenon (lux) detector is a 370-kg liquid xenon (lxe) time-projection chamber designed primarily for the direct detection of weakly-interacting massive particles (wimps), a leading dark matter candidate. lux operates on the 4850-foot level of the sanford underground research facility in lead, sd. th... | sensitivity of the lux detector to the possible neutrinoless double beta decay of 134xe |
when a neutron star cools to below the critical temperature for the onset of superfluidity, nucleon pair breaking and formation (pbf) processes become the dominant mechanism for neutrino emission, while the modified urca and the nuclear bremsstrahlung processes are suppressed. the pbf processes in neutron stars have al... | goldstone boson emission from nucleon cooper pairing in neutron stars and constraints on the higgs portal models |
supersymmetry (susy) is one of the most promising extensions of the standard model of particle physics. in susy models that conserve r-parity, the lightest susy particle (lsp) is stable and is a viable dark matter candidate. we present a search for susy with 13 tev proton-proton collision data recorded in 2016 by the c... | search for supersymmetry with razor variables in higgs to diphoton decays produced in association with leptons and jets in proton-proton collisions at √{ s} = 13 tev |
this dissertation investigates several topics related to the randall-sundrum (rs) model stalibilized by the goldberger-wise (gw) mechanism. inspired by the contino-pomarol- rattazzi mechanism, scenarios with a very light (1 kev to 10 gev) radion which could be associated with the suppression of the electroweak contribu... | topics on the randall-sundrum model and radion physics |
one of the most accepted ideas in modern cosmology to explain a number of puzzling astronomical observations is the existence of dark matter in the universe, even though it has not been directly observed. we recall the motivation for its existence according to its influence on visible matter and its characteristics in ... | dark matter particles: properties and detections |
in this thesis, we extend the su(3)c x su(2)w x u(1)y gauge symmetry of the standard model by an additional gauge group, and explore the possible phenomenological results on particle colliders and in cosmology. specifically, we will study two different models. the first one is the renormalizable coloron model, where th... | searching for new physics from a extended gauge sector of the standard model |
since the discovery of dark matter in our universe, numerous possible candidates have been proposed to explain its existence and composition. one of the candidates is the ultralight axion-like particles, existing in the form of domain walls or boson stars, caused by topology or self-interactions. the global network of ... | search for boson stars using the global network of optical magnetometers for exotic physics (gnome) |
lux-zeplin (lz) is a direct detection dark matter experiment located at the 4850 ft. level of the sanford underground research facility in lead, south dakota. the lz experiment employs a dual-phase xenon time projection chamber (tpc) in combination with a novel active neutron veto to detect weakly interacting massive p... | modeling the wall background in the lux-zeplin (lz) dark matter experiment |
for quantum sensing applications in high energy physics, such as searching for dark matter axion particles, there is a need for resonators that maintain a high quality factor (q0) in multi-tesla magnetic fields. superconducting radiofrequency (srf) cavities are promising candidates, but their potential for high q0 in l... | superconducting materials in high magnetic fields for high energy physics quantum sensing applications |
this article summarizes the fourth of a series of lectures delivered at the cosmology school "introduction to cosmology". it reviews different candidates for dark matter particles in their historical context. | lecture iv. dark matter & particles (wimp) |
the axion is a promising dark matter candidate as well as a solution to the strong charge-parity (cp) problem in quantum chromodynamics (qcd). we describe a new concept for smallsat solar axion and activity x-ray telescope (ssaxi) to search for solar axions or axion-like particles (alps) and to monitor solar activity o... | smallsat solar axion and activity x-ray imager (ssaxi) |
up to now searches for dark matter (dm) detection have not been successful, either because our paradigm in howdmsignals should look like are wrong or the detector sensitivity is still too low in spite of the large progress made in recent years. we discuss both possibilities starting with what we know about dm from cosm... | perspectives on the detection of supersymmetric dark matter |
the standard model of particle physics is a $su(3)_c\times su(2)_l\times u(1)_y$ gauge theory that can explain the strong, weak, and electromagnetic interactions between the particles. the gravitational interaction is described by einstein's general relativity theory which is a classical theory of gravity. these theori... | astrophysical searches of ultralight particles |
a prominent aspect of the hunt for cold dark matter is looking for light scalar candidates such as axion-like particles (alps). the coupling between alps and photons allows for the spontaneous decay of alps into pairs of photons. it has been previously shown that stimulated alp decay rates can become significant on cos... | potential of the meerkat telescope to detect the stimulated decay of axion-like particles |
ultralight, wavelike dark matter candidates can be detected via their coupling to electromagnetic modes. recently, a number of experimental proposals have emerged to search for qcd axion dark matter over its entire allowed mass range ( 1 pev - 10 mev). we describe the fundamental optimization of searches for for waveli... | fundamental limits of electromagnetic axion and hidden-photon dark matter searches |
the large underground xenon (lux) experiment is a dual-phase xenon time projection chamber (tpc), with an active mass of approx. 250 kg, located in the sanford underground research facility in lead, south dakota, usa. the experiment searches for weakly interacting massive particles (wimps), a leading candidate for the ... | pulse shape discrimination in the lux dark matter experiment |
this research explores the directional dependence that extreme magnetic fields have on the annihilation of dark matter into electron-positron pairs. we take the neutralino of the minimally supersymmetric standard model (mssm) as our dark matter candidate and assume magnetic field strengths on the order of the critical ... | directional dependence for dark matter annihilation in extreme astrophysical environments |
hex-p is a probe-class mission concept that will combine high spatial resolution x-ray imaging (<10 arcsec fwhm) and broad spectral coverage (0.1-150 kev) with an effective area far superior to current facilities (including xmm-newton and nustar), to enable revolutionary new insights into a variety of important astr... | the high energy x-ray probe (hex-p) |
current cosmological observations indicate that ~27% of the universe is made up of something called dark matter (dm) but no particles in the standard model explain its nature. several beyond standard model particles, such as weakly interacting massive particles (wimp) and axion-like particles (alps), have been proposed... | searching for dark matter with hawc |
results from two leading dark matter experiments—xenonnt and pandax-4t—rule out an enigmatic signal detected in 2020 and set new constraints on dark matter particle candidates consisting of light fermions, respectively. | potential dark matter signal gives way to new limits |
the electronic energy deposited on nuclear emulsions by c ions of 5-200 kev and kr ions of 5-600 kev is evaluated and compared with those deposited by fast ions for designing and fabricating fine-grain nuclear emulsions for directional dark matter searches. the nuclear quenching factor and the electronic linear energy ... | energy deposition on nuclear emulsion by slow recoil ions for directional dark matter searches |
many theoretical extensions of the standard model of particle physics propose new fundamental bosons such as the axion and axionlike particles, which are prominent dark matter candidates. the exotic particles are very light and can mediate new macroscopic interactions between fermions with an interaction range from mic... | an experimental search for exotic spin-dependent interactions with a spin-exchange relaxation-free magnetometer |
it is now well established that over 80% of the matter in our universe is comprised of a non-luminous substance known as dark matter. by far the most popular dark matter candidate is the weakly interacting massive particle (wimp). attempting to discover the nature of wimp dark matter through direct detection has been a... | radioassay of gadolinium-loaded liquid scintillator and other studies for the lz outer detector |
the standard model (sm) of particle physics agrees very well with experiment. but there are some problems in the sm yet to be solved, such as the hierarchy problem, dark matter, neutrino mass, matter antimatter asymmetry, to name a few. these questions motivate particle theorists to explore new physics beyond the stand... | new physics beyond the standard model |
we model the expansion history of the universe as a gaussian process and find constraints on the dark energy density and its low-redshift evolution using distances inferred from the luminous red galaxy (lrg) and lyman-alpha (lyalpha) datasets of the baryon oscillation spectroscopic survey, supernova data from the joint... | cosmology and astro-particle physics: what is dark matter and what is dark energy |
over the last 30 years, the progress and sensitivity reach in searching for direct detection of wimp-like dark matter particle candidates has improved over 10 orders of magnitude in wimp-nucleon interaction strength. direct detection dark matter experiments derive their sensitivity from a combination of total target ex... | backgrounds in wimp direct detection dark matter experiments |
nearly all astrophysical and cosmological data point convincingly to a large component of cold dark matter (cdm) in the universe. the axion particle, first theorized as a solution to the strong cp (charge conjugation times parity) problem of quantum chromodynamics, has been established as a prominent cdm candidate. cos... | microwave cavities for axion dark matter detectors |
primordial black hole (pbh) is one of the most promising cold dark matter candidates in recent years. the signature of pbhs in the stochastic gravitational-wave background (sgwb) is natural as pbh formation requires a significant amplification in inflationary scalar curvature perturbation, which sources the tensor pert... | stochastic gravitational waves background to probe the reheating histories in the presence of primordial black holes |
this theoretical particle physics thesis is an investigation into old and new symmetries of nature. known symmetries and conservation laws serve as a guide for dark and visible sector model building. new symmetries of nature are proposed, broken and subsequently reinstated at high temperatures in order to discover well... | symmetries, dark matter and minicharged particles |
hypothetical particles called axions are among the leading candidates for the mysterious cold dark matter (cdm) that binds galaxies together and constitutes more than 80% of the matter in the universe. cdm axions may be detected via their resonant conversion into photons in a ''haloscope'' detector: a tunable, high- q ... | mitsuyoshi tanaka dissertation award talk: first results from the haystac axion search |
the gaps experiment is designed to carry out a dark matter search by measuring low-energy cosmic-ray antinuclei (antiprotons, antideuterons, antihelium) with a novel detection approach. for the case of antiprotons, a high-statistics measurement in the unexplored low-energy range will be conducted. in contrast, not a si... | the general antiparticle spectrometer - search for dark matter using cosmic-ray antinuclei |
the existence of the second flavor of hydrogen atoms (sfha), predicted theoretically in 2001, has been confirmed by four different types of atomic or molecular experiments, and evidenced by two different types of astrophysical observations. the sfha is based on the second analytical solution of the standard dirac equat... | second flavor of heavy ions |
jiangmen underground neutrino observatory (juno) has a potential to indirectly detect dark matter (dm), observing neutrino events from annihilations of dm trapped by the gravitational force in the solar core. weakly interacting massive particle (wimp) dm candidate with mass > 4 gev has significant solar capture rate... | machine learning application for dark matter - background classification in juno experiment |
whatever dark matter is, it must be one irreducible unitary representation of the inhomogeneous lorentz group or another. we here develop a formalism of mass dimension one fermions and bosons of spin one half, and show that they provide natural dark matter candidates. by construction, they are covariant under space-tim... | mass dimension one fields with wigner degeneracy: a theory of dark matter |
the transverse momentum distributions of λ hyperons and d mesons produced in pp and pbpb collisions at ultrarelativistic energies were found in a thermodynamic model. the calculated spectra were compared with the experimental data measured at the large hadron collider. an interpretation by the transverse momentum in pp... | transverse momentum distribution of secondary particles in high-energy collisions of protons and nuclei and the possibility of detecting dark matter particles in the spectra of soft photons |
over the past several years, non-wimp dark matter candidates have attracted a surge of interest in the particle physics community. in this two-part talk, i will summarize the underlying physics motivation for (and observable consequences of) a dark matter that is able to form a bound state of fundamental constituents. ... | dark matter and fusion |
precise measurements of gev range gamma rays help narrow down among various gamma emission models and increase sensitivity for dark matter searches. construction of precise as well as compact instruments requires detectors with high efficiency, high stopping power, excellent energy resolution, and excellent angular res... | a lyso crystal array readout by silicon photomultipliers as compact detector for space applications |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.