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we search for axions, dark matter candidates and hidden sector particles from new physics, possibly produced in the numi fixed-target complex. the main signatures of such particles interacting in the nova near detector may be either single showers from scattering interactions or di-lepton tracks from the particle decay... | hidden sector searches at the nova near detector |
both cosmology and particle physics converge on weakly interacting massive particles as good candidates for dark matter. supercdms will use cryogenic germanium and silicon crystals at snolab to search for wimp interactions. because neutrons can mimic wimp interactions, supercdms considers deploying a neutron veto detec... | neutron veto prototype for the supercdms snolab experiment |
it is believed today that most of the matter in the universe is not composed of standard model particles, but rather of dark matter (dm). dm is thought to constitute 85 percent of the matter in the universe. direct detection of dm is extremely difficult for a myriad of reasons, but bubble chambers have proven to be goo... | characterization of silicon photomultipliers for use in scintillating bubble chambers (sbcs) |
challenging optical resonant gain achieved via the use of two geometrically modematched fabry-perot cavities is anticipated in any light particle search ii (alps ii) to extend the search sensitivity of light-weight sub-ev dark matter candidates to uncharted parameter space of scientific interest. we report on the preci... | precision optomechanics for geometrically modematched fabry-perot cavities in alps ii |
an abundance of evidence from a wide range of astrophysical and cosmological observations suggests the existence of nonluminous cold dark matter, which makes up about 83% of the matter and 27% of the mass-energy of the universe. weakly interacting massive particles (wimps) have been one of the most promising dark matte... | the cryogenic infrastructure of the xenon1t dark matter experiment: from design to performance during the one ton-year wimp search |
being free of the initial singularity, bouncing cosmology serves as a promising alternative to inflation. however, how entropy production occurs during the postbounce phase is still unclear. in this work, we use a newly identified dark matter (dm) candidate called thermal equilibrium freeze-in dm (eqfidm), which can di... | warm and cold dark matter in a bouncing universe |
the nature of dark matter is one of the most important open problems in modern physics. axions, originally introduced to resolve the strong cp problem in quantum chromodynamics (qcd), and axion-like particles (alps) are strongly motivated dark matter candidates. i will report on two experimental searches for ultralight... | searching for axion-like dark matter in lab-scale experiments |
ultralight axion-like particles are a possible candidate for dark matter. these particles could result in cosmic topological defects such as domain walls or axion stars. the global network of optical magnetometers to search for exotic physics (gnome) is looking for a transient signal caused by exotic-spin couplings as ... | spin-exchange relaxation free magnetometer for the global network of optical magnetometers for exotic physics (gnome) |
in this review paper we revisit the main ideas concerning the role played by scalar fields in cosmology, in particular as candidate for dark matter. moreover, we include some information from the plenary talks and proceedings of the bs2 session of the mg14: the origin of scalar fields and their roles in cosmology by ke... | scalar fields in cosmology |
some new physics extensions of the standard model predict that the 125 gev higgs boson can be a portal to invisible dark matter candidates through its decay. direct searches for higgs boson decay to invisible particles are a convenient way to explore this scenario. i present the results of a search for invisible decays... | search for higgs boson decays to invisible final states produced in vector boson fusion in association with a low pt photon with the atlas detector |
the idea of with ew-νr model with additional gev scale mirror fermions with large displaced vertices and extended scalar sector is very appealing from the collider perspective. the presence of a complex singlet scalar in this model helps to solve the strong-cp problem, satisfying the constraint coming from the present ... | prospect of a scalar dark matter candidate in the electroweak scale rh-model |
the dama/libra experiment — consisting of ∼ 250 kg of highly radio-pure nai(tl) — is in data taking in the underground laboratory of gran sasso. the data collected in its first configuration (dama/libra—phase1) together with the data of the former dama/nai experiment (∼ 100 kg first generation highly radio-pure nai(tl)... | dama/libra-phase1 results and perspectives of the phase2 |
lz (lux-zeplin) is an international collaboration that will look for dark matter candidates, wimps (weakly interacting massive particles), through direct detection by dual-phase time projection chamber (tpc) using liquid xenon. the lz detector will be located nearly a mile underground at surf, south dakota, shielded fr... | reflectance measurements of ptfe, kapton, and peek for xenon scintillation light for the lz detector. |
we will describe recent progress of experiments towards realising large-mass single particle experiments to test fundamental physics theories such as quantum mechanics and gravity, but also specific candidates of dark matter and dark energy. we will highlight the connection to the work started by otto stern as levitate... | testing fundamental physics by using levitated mechanical systems |
binary mergers of galaxy clusters are powerful tools for revealing the properties of dark matter (dm). in these mergers, colliding intra-cluster medium (icm) particles exchange momentum and fall behind the (primarily non-collisional) galaxies. by comparing the behavior of dm halos with gas particles versus galaxies, an... | multiwavelength analysis of two new dissociative galaxy cluster mergers |
orpheus is an axion haloscope using an open cavity design with dielectrics to search for axions with masses around 70 μev. the axion is a hypothetical particle and an especially promising dark matter candidate. while it was predicted as a consequence of a solution to the strong cp problem, it could have been created in... | the admx orpheus experiment: first results and future operations |
originally motivated to have a mass of around 10-22 ev, fuzzy dark matter is an emerging candidate for the mysterious, undetected dark matter particle. in this work, we explore the effect of placing a supermassive black hole in the center of a galactic fuzzy dark matter halo. solitons naturally arise at the core of the... | how supermassive black holes impact the fuzzy dark matter mass mystery |
high-precision measurement of the cosmic-ray antiproton spectrum and sensitive search for cosmological antihelium has been published from bess-polar ii (balloon-borne experiment with a superconducting spectrometer) for core study of the early universe using elementary particle measurements. with a thin plastic scintill... | new results of very-low energy antiproton spectrum and antideuteron search in bess-polar ii |
dark matter is one of the main components of the universe. due to its weak interaction with other particles, dark matter cannot be identified as a particle that we know of. we are interested in a simple particle physics scenario where dark matter is identified with the fermion in the dark sector and the standard model ... | an interpretation of a simple portal dark matter model on fermi-lat gamma-ray excess |
using recent results of the global and modular bsm inference tool, i review the status and detectability of the simplest thermal dark matter candidates at the beginning of the cta era. i will show results for the following popular dark matter models: the standard model of elementary particles (sm) augmented with a real... | dark matter searches in the cta era |
this presentation describes a search for dark matter candidates produced in association with a standard model higgs boson, with a focus on the h --> b b decay channel. the search utilises a dataset of pp collisions at √{ s} = 13 tev corresponding to an integrated luminosity of 139 fb-1, recorded by the atlas detecto... | dark matter search in monoh channel with the atlas detector |
though the standard model of particle physics has been very successful as an effective theory, there still are several problems which require extensions of the standard model. we here focus on three of them, tiny neutrino masses, a candidate of a dark matter particle, and the origin of the baryon asymmetry of the unive... | thermal leptogenesis scenario in a model with a dark matter and neutrino masses |
the damic (dark matter in ccds) experiment employs charge coupled devices (ccds) to search for dark matter. the damic collaboration pioneered the search for nuclear and electronic recoils from low-mass dark matter particles interacting in the bulk silicon of ccds with a 40g detector operated at the snolab underground l... | status of the damic-m dark matter search experiment |
although the lhc experiments have put strong limits on coloured supersymmetric states, it is still possible that electroweakly interacting supersymmetric particles have masses in the range 100-200 gev. even outside of super-symmetry, candidates for the particle of dark matter may have masses in this range unconstrained... | discovering supersymmetry and dark matter at the international linear collider |
in this dissertation, i study physics beyond the standard model of particle physics with a particular focus on unification. so(10) grand unified theories (guts) provide such a framework. chapter \ref{minimal gut} is devoted to construction of a minimal version of such models which has the potential to describe all phys... | unification and physics beyond the standard model |
from astronomical observations and theories of standard cosmological models, we infer the existence of a large unobserved component of mass in the universe that is not luminous but evident through its gravitational interactions with ordinary matter. we call this unobserved component "dark matter". various theoretical s... | design, fabrication and characterization of a plasmonic haloscope resonator for the detection of axionic dark matter |
high power laser fields enabled by technologies developed for ground-based gravitational-wave observatories open up new opportunities for fundamental physics studies. one of these options is the search for axions and axion-like particles in a pure laboratory experiment. the axion is a solution to the strong cp-problem ... | any light particle search (alps) |
weakly interacting massive particles (wimps) have long been one of the leading candidates for dark matter, the undetected mass component comprising ~ 27% of the universe. the primary indicator of a wimp signal is an excess in the nuclear-recoil event rate measured by a detector, while the revolution of the earth about ... | systematic uncertainties in the search for annual modulation in cdms-ii |
understanding the response of dark matter detectors at the lowest recoil energies is important for correctly interpreting data from current experiments or predicting the sensitivity of future experiments to low mass weakly interacting massive particles. in particular, the ionization yield is essential for determining t... | experimental concept for a precision measurement of nuclear recoil ionization yields for low mass wimp searches |
the qcd axion, which solves the strong cp problem in qcd, is one of the best motivated dark-matter candidates. in a strong dc magnetic field, qcd axion dark matter is detected electromagnetically as an extremely weak, narrowband ac electromagnetic signal at a frequency determined by the particle mass. at some frequenci... | quantum measurement of rf resonators to search for axion dark matter below 300 mhz |
i will present how gravitational wave detectors can be used to probe theories simultaneously explaining dark matter and the matter-antimatter asymmetry of the universe. in particular, i will focus on an asymmetric dark matter model extending the standard model gauge symmetry by a non-abelian gauge group, under which th... | dark matter and matter-antimatter asymmetry of the universe from gravitational waves |
axion-like particles (alp) are promising dark matter candidates. a classical field description is typically employed, motivated by large phase space occupation numbers. here we show that such a description is accompanied by a quantum effect: squeezing due to gravitational self-interactions. for a typical qcd axion toda... | quantum effects in axion dark matter |
three huge detectors are racing to detect wimps, long the favored candidate for universe's missing matter | hunt for a long-sought dark matter particle nears a climax |
axions or axion-like particles are hypothetical elementary particles that serve as promising dark matter candidates and address some challenges in the standard model of particle physics. an indirect method to detect axions is by studying the effect of axion exchange between two neutron stars that are emitting gravitati... | explaining slow earthquake phenomena with a frictional-viscous faulting model |
the pion nucleon sigma term (σπn) is a fundamental parameter of qcd and is integral in the experimental search for dark matter particles as it is used to calculate the cross section of interactions between potential dark matter candidates and nucleons. recent calculations of this term from lattice-qcd data disagree wit... | studying the puzzle of the pion nucleon sigma term |
this beyond the standard model search looks for events where single top quarks are produced in association with missing transverse energy. this missing transverse energy can be attributed to a neutral, long lived or stable, non-interacting particle which could be considered a dark matter candidate. the final state topo... | search for monotop production in semi-leptonic decays of top quarks at √{ s } = 8 tev using the atlas detector |
over the past eighty years, numerous complementary observations of our universe have indicated that our current description of physics is far from complete. the "ordinary matter", such as electrons, protons, photons and neutrons, that constitutes the bulk of all human physical experiences is actually only a minority (a... | a dark matter search using the final supercdms soudan dataset and the development of a large-format, highly-multiplexed, athermal-phonon-mediated particle detector |
neutron stars are objects where matter and fields can be tested to the extreme. in their interior, ordinary matter with a majority of nucleons (n) may coexist with a component of exotic matter that constitutes the so-called dark matter. it is believed that this latter type of matter constitutes nearly 80% of all mater ... | dark mechanism for nucleation inside old neutron stars |
a proposed diamond-based detector for weakly interacting massive particle (wimp) dark matter would combine the advantages of solid-state semiconductor detectors with directional detection capability, allowing wimp searches below the neutrino floor. this crucially relies on the ability to detect and map damage to the di... | crystal damage mapping with nv centers in diamond for directional dark matter detection |
the axion dark matter experiment (admx) uses a microwave resonant cavity design with a tunable resonant frequency to search for axions with masses on the order of 1 ??ev. the axion is a theoretical particle which was first proposed as a solution to the strong cp problem. however, its electric neutrality, weak coupling,... | admx design and status: run 1c and 1c-extended |
macroscopic dark matter (or macro) provides a broad class of alternative candidates to particle dark matter. these candidates would transfer energy primarily through elastic scattering, and this linear energy deposition would produce observable signals if a macro were to traverse the atmosphere. we study the fluorescen... | model independent probes of macroscopic dark matter with euso-spb2 |
bosonic fields beyond the standard model of particles are proposed as constituents of dark matter and dark energy, and they appear as potential solutions to the strong-cp and hierarchy problems. these fields interact feebly with the standard model particles and fields; therefore, precision quantum sensors are an ideal ... | search for exotic field emission from the gw170817 binary neutron star merger using gps atomic clocks |
in this study, we consider a deformed gas of the bosonic fibonacci oscillators, whose properties enable us to develop both an intermediate-statistics behavior and an energy spectrum given by a generalized fibonacci sequence in terms of the real independent deformation parameters q1 and q2. by viewing photons and phonon... | thermostatistical properties of the blackbody radiation and debye crystal model through fibonacci oscillators |
current experimental limits allow for unobserved, fundamental forces of nature many times stronger than gravity at sub-millimeter length scales. such forces arise in unified theories, and could be mediated by candidate particles for dark matter and dark energy. these forces can couple to fundamental properties such as ... | spin without magnetism: neutron scattering in search of a fifth force |
new results from the lhc are increasingly probing the borders of the standard model of particle physics. some of the most attractive scenarios for new physics are supersymmetric models. in addition to solving some of the shortcomings of the standard model (e.g. the hierarchy problem, gauge coupling unification) they al... | susy and dark matter results from atlas |
discovering the nature of dark matter (dm) remains one of the most important outstanding questions in particle physics. while the astrophysical evidence for its existence continues to accumulate, we know very little about its fundamental constituents, and how it connects to the standard model. terrestrial direct detect... | direct detection of light dark matter with electrons, phonons, and magnons |
in this thesis, we present several searches for beyond the standard model physics in proton-proton collisions recorded by the compact muon solenoid experiment at center-of-mass energy of 8 and 13 tev. we search for particle dark matter in events with two or more jets and missing transverse momentum at ps = 8 tev. in th... | searches for new physics at the compact muon solenoid experiment and precision timing calorimetry |
atom interferometers are relatives of young's double-slit experiment that use matter waves. they leverage light-atom interactions to masure fundamental constants, test fundamental symmetries, sense weak fields such as gravity and the gravity gradient, search for elusive ``fifth forces,'' and potentially test properties... | francis m. pipkin award talk - precision measurement with atom interferometry |
in the last century, cosmological and astrophysical observations indicated that ~ 85% of the matter in the universe is inert, non-baryonic and non-luminous dark matter. the existence of particle dark matter is well motivated, however, all that is known about its nature is indirect information coming from large-scale as... | dark matter detection phenomenology |
weakly interacting massive particles (wimps) are theoretically appealing dark matter (dm) candidates. generalizing the minimal dark matter paradigm, we consider stable dm candidates within a single su(2)l n-plet, with odd n in order to avoid strong constraints from direct detection and n <= 7 to ensure calculability... | a final word on electroweak dark matter models at future lepton colliders |
nuclear processes involving the weak interaction can be used to extract information on some elusive properties of particles. remarkably useful to this goal is parity-violating elastic electron scattering off nuclei, which can be used to determine accurately the distribution of neutrons within the nucleus, including inf... | weak nuclear processes in the quest for elusive particles |
dark matter is likely to be made of new, as yet undiscovered particles and a very well motivated candidate is the axion, a light (μev-mev) mass pseudoscalar neutral boson. it's possible detection can be made using a large scale cryogenic microwave cavity placed in a high magnetic field. the axion dark matter experiment... | future plans for the axion dark matter experiment (admx) |
an x-ray emission line near 3.5 kev observed in dark matter dominated objects (galaxy clusters, the milky way galaxy) has been interpreted as a possible secondary product of a decaying dark matter particle, though observations of the line have been controversial. one possible dark matter particle candidate that could e... | a search for dark matter with halosat |
a network of optical magnetometers has the potential to detect proposed `pseudo magnetic' effects from exotic-spin couplings as the earth passes through a topological defect in a coherent field of ultra-light axion-like particles (a proposed candidate for dark matter). the global network of optical magnetometers to sea... | spin-exchange relaxation free magnetometer using hybrid pumping for the global network of optical magnetometers for exotic physics (gnome) |
in the present work, the charged b1, b2 and b3 bastons with the condition of k(mm) = k >> k(dd) > k(dm) = k(lq) = 0 are explained as the good candidates of the dark matters. the proposed rest mass (26.12 ev/c2) of the b1 dark matter is indirectly confirmed from the supernova 1987a data. the missing neutrinos a... | charged dark matters, missing neutrinos, cosmic rays and extended standard model |
certain dark matter candidates can form macroscopic topological defects (e.g., domain walls) and other structures (e.g., q-balls) which could constitute a significant source of energy density for dark matter. these structures may form if dark matter consists of axions or axion-like particles (alps). in the case of alps... | analysis methods for detecting topological defect dark matter with gnome |
snolab is a 5000 m^2 facility 2 km underground in sudbury, ontario, canada. operating in an active mine site, snolab maintains the laboratory as a class 2000 clean room. many outstanding questions in astroparticle and subatomic physics today require the radio-quiet environment provided by deep underground research faci... | snolab's neutrino program |
in this chapter we review the existing public searches for dark sectors performed by the lhcb collaboration. we start first by discussing the main differences between the lhcb detector and the previously described atlas and cms, as these shape the search program. owing to its design lhcb has an upper hand for probing d... | probing stealth dark sectors with lhcb |
neutron lifetime anomaly is a discrepancy of results between two main types of experiment: the beam and the bottle methods. the difference between the most precisely measured results of each of the types is 10 +/- 2 s, exceeding the 3σ bound. we consider a possible explanation for the anomaly, in which the neutrons in ... | neutron-axion scattering and the neutron lifetime puzzle |
the modification of electrodynamics in the presence of ultralight axion-like dark matter (dm) is well-known and has been used to realize lc circuit probes of such sub-ev mass-scale dark matter. other ultralight bosonic dark matter candidates are possible, and here we reframe the modification of electrodynamics for the ... | lc circuits for direct detection of ultralight dark matter |
efficient detection of single thz photons is an outstanding challenge in the fields of particle astrophysics and thz spectroscopy that would open new pathways for dark matter discovery. while single thz photon counting has been achieved with quantum dot sensors, these devices suffer from an inability to resolve the ene... | photo-sensitivity and charge transport in novel narrow-bandgap semiconductors for single thz photon and dark matter detection |
niobium superconducting radio-frequency (srf) cavities have been improved in terms of the quality factor q by infusing n into the nb surface [1]. these high-q cavities provide a new technology platform for both quantum processors and quantum sensors for dark matter (dm) candidates. the sensitivity to axion dm signals d... | electromagnetic response of nb superconducting rf cavities |
the axion is a candidate particle for dark matter in our universe, and it is currently a pressing topic to develop new detection methods for this particle. owing to its high occupancy number, the axion can display properties of a bose-einstein condensate. in particular, self-interactions and gravity produce a sound mod... | dark sound |
dark matter is a key ingredient to physical cosmology, and one of the mysteries of modern science. among a variety of possible candidates which have been explored in recent decades (such as wimps and wisps), the axions are the most promising constituents of dark matter. these hypothetical particles have been proposed t... | axions: search for dark matter using ultra-intense lasers |
the large underground xenon (lux) detector is a 350-kg liquid xenon (lxe) time-projection chamber designed 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. monoenergeti... | measurement of yields and fluctuations using background and calibration data from the lux detector |
since december 2009, the cogent experiment has recorded interactions in the detector with the goal of either detecting dark matter or setting stringent limits on the mass and cross-section of these particles, assuming that dark matter is a form of wimp (weakly interacting massive particle). the collaboration has made p... | monte carlo studies of the cogent detector for a variety of dark matter candidates |
the pico-2l c3f8 bubble chamber search for weakly interacting massive particle (wimp) dark matter was operated in the snolab underground laboratory at the same location as the previous cf3i filled coupp-4kg detector. neutron calibrations using photoneutron sources in c3f8 and cf3i filled calibration bubble chambers wer... | dark matter limits from a 2l c3f8 filled bubble chamber |
we reexamine the current direct dark matter (dm) detection data for several types of dm candidates, both assuming the standard halo model (shm) and in a halo-independent manner. we consider the potential signals for light wimps that have appeared in three direct detection searches: dama, cdms-ii-si, and cogent, and we ... | tests of wimp dark matter candidates with direct dark matter detection experiments |
the axion is a well-motivated particle that solves the strong cp problem and is also a dark matter candidate. the axion dark matter experiment (admx) searches for axion matter within the local milky way halo using an axion haloscope. in previous runs, admx was able to exclude the full range of axion to photon couplings... | design and instrumentation for admx-g2 run 1c |
the era of precision cosmology has revealed that ~80% of the matter in the universe is dark matter. two leading candidates, motivated by both particle and astrophysics, are weakly interacting massive particles (wimps) and weakly interacting sub-ev particles (wisps) like axions and axionlike particles. both wimps and wi... | exploring the particle nature of dark matter with the all-sky medium energy gamma-ray observatory (amego) |
about 26.8% of the universe mass is contributed from dark matter. weakly interacting massive particle(wimp) is currently the most promising dark matter candidate. supercdms is one of the leading direct dark matter detection experiments around the world. its biggest goal is to use semiconductor detectors under the cryog... | the search for high mass wimps with the supercdms experiment |
the evidence for the existence of dark matter is well supported by many cosmological observations. separately, long standing problems within the standard model point to new weakly interacting particles to help explain away unnatural fine-tunings. the axion was originally proposed to explain the strong-cp problem, but w... | construction and commissioning of the abracadabra-10 cm prototype: lessons for future experiments |
the charged higgs boson is an inevitable particle in supersymmetric models, both in the minimal version and in extensions. it is also a particle, which may have different decay channels depending on the scalar representations in the model, and thus it may help in identifying the model. in this talk i will consider the ... | charged higgs beyond the mssm at the lhc |
the darkside (ds) program aims to detect the so-called wimps (weakly interactive massive particle) which are considered the best candidates for dark matter. wimps elastically scattering would be detected by using a two-phase time projection chamber (tpc) based on argon nuclei target. thanks to the properties of the sci... | darkside-50: a view of the first atmospheric argon run |
the qcd axion is among the best motivated particle dark matter (dm) candidates. cavity haloscopes like admx (axion dark matter experiment) resonantly detect conversion of dm axions to photons under a strong magnetic field in a high-q resonant cavity. recent admx runs with a single cavity excluded most of the qcd axion ... | admx run 2a: a multi-cavity qcd axion search |
axions are hypothetical elementary particles that may help provide the answer as to why qcd preserves the discrete symmetries p and cp. light axions also have properties that make them ideal dark-matter candidates. the axion dark matter experiment (admx), has been at the forefront of the search for dark-matter axions f... | admx overview and new limits on axion mass |
the nature of dark matter (dm) is still an open question for modern physics. in the particle dm paradigm, this elusive kind of matter cannot be made of any of the known particles of the standard model (sm) of particle physics. many efforts have been made in order to model the nature of the dm. among others, weakly inte... | constraining the dark matter annihilation cross section |
massive states (with energies ≥ 10 gev) of a hadronic string (with a scale α' ≈ 1gev-2) can have a very small coupling to ordinary baryons in the universe. the lifetime of such states is of the order of or even greater than the age of the universe. these heavy states are assumed to be possible candidates for the role o... | heavy hadron-string states as weakly interacting heavy dark-matter particles |
we will present a search for the dark photon, a', and the dark higgs boson, h', in the so-called higgs-strahlung channel, e+e- -->a'h' , with h' -->a'a' . we investigated ten exclusive final-states with a' -->e+e- , μ+μ- , or π+π- , in the mass ranges 0 . 1 gev/c2 <ma' < 3 . 5 gev/c2 and 0 . 2 gev/c2 <... | search for dark particles at belle (ii) |
direct detection of dark matter is one of the most important topics in modern physics. it is estimated that 22% of universe matter is composed by dark matter in front of 0.4% of ordinary matter like stars, galaxies planets and all kind of known astrophysical objects. several kinds of experiments are nowadays involved i... | dark matter searches using superheated liquids |
the population of milky way satellite galaxies includes the least luminous, least chemically evolved, and most dark matter dominated galaxies in the known universe. due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are promising targets for the indirect d... | searching for dwarf spheroidal galaxies with des and the fermi-lat |
a number of dark matter (dm) candidates are flavor-mixed particles, yet the standard cosmology does not account for flavor-mixing of cdm. in our earlier dm-only n-body simulations, we have found that dm with more than one flavor-mixed component (the ``2cdm'' model) simultaneously resolves small-scale problems (the subs... | preliminary results of cosmological simulations with flavor-mixed dark matter and baryonic physics |
weakly interacting massive particles (wimps) are one of the leading candidates for the undetected mass component comprising ~27% of the observable universe. an excess in the nuclear-recoil event rate measured by a detector, combined with an annual periodicity introduced by the revolution of the earth about the sun, is ... | search for annual modulation in cdms ii |
fuzzy dark matter, an alternative to the cold dark matter (cdm) model, is an axion- like particle with a mass of m < e-22 ev, or e-31 times the mass of a proton, and therefore exhibits quantum behaviors. this dark matter candidate theoretically solves many of the small-scale structure problems where typical cdm fail... | investigating fuzzy dark matter through stellar streams |
i will give a general overview of experimental facilities with high energies and high intensities, focusing on proton fixed-target (at fermilab) and hadron collider experiments (at the lhc). i will classify the searches as ''decay'' searches and ''scattering'' searches, and detail the new physics models of interest. th... | the high energy-intensity frontier at the particle-physics renaissance |
the research of materials and structures for the manufacture of organic diodes emitting white light woleds has been very intense nowadays mainly due to the possibilities of its use in obtaining low-energy light consuming. the energy transfer between polymer materials has proven to be a great allied to search organic de... | characterization of digital textile printing and polymer blend (pfo-dmp:p3ht) for application in manufacture of organic diodes emitting white light - woleds |
the theory of universal extra dimensions involves kaluza-klein (kk) particles. the lightest kk particle (lkp) is one of the good candidates for cold dark matter. annihilation of lkp dark matter in the galactic halo produces high-energy gamma-rays. the gamma-ray spectrum shows a characteristic peak structure around the ... | observability of gamma-ray spectral feature from kaluza-klein dark matter |
elementary particle decays and reactions are discussed in terms of the three-dimensional quantized space model beyond the standard model. three generations of the leptons and quarks correspond to the lepton charges. three heavy leptons and three heavy quarks are introduced. and the bastons (new particles) are proposed ... | elementary particles, dark matter candidate and new extended standard model |
axions are particles that arise from the peccei-quinn solution to the strong charge-parity problem in quantum chromodynamics. axions with a few μev mass are a prominent cold dark matter (cdm) candidate. the aim of the axion dark matter experiment (admx) is to detect cdm axions in the halo of our galaxy. admx seeks to d... | reaching the 5-9 μev range with admx: multi-cavity array |
understanding the nature and origin of dark matter is one of the most important challenges for modern particle physics. during the previous decade the sensitivities of direct dark matter searches have improved by several orders of magnitude. these experiments focus their work mainly on the search for dark-matter partic... | search for dark photons using data from cresst-ii phase 2 |
the damic-m (dark matter in ccds at modane) experiment will exploit the sub-electron resolution capabilities of skipper charge-coupled devices (ccds) to search for sub-gev dark matter particles with a 1 kg-year exposure. the experiment will operate 1700 m below the mount fréjus peak in modane, france, at the laboratori... | status of the damic-m dark matter experiment |
recent theoretical work has highlighted the motivations for sub-gev dark matter candidates that interact with ordinary matter through new light mediator particles. these scenarios constitute a cosmologically and phenomenologically viable possibility to account for the dark matter of the universe. such sub-gev (or light... | future dark matter searches with fixed target proton experiments |
astrophysical observations at all scales provide indisputable evidence for the existence of an invisible and dominant mass component in the observable universe. the nature of this dark matter remains one of the greatest challenges of modern physics. the leading hypothesis is that dark matter comprises new elementary pa... | new results from the xenon1t dark matter experiment |
the standard model of elementary particles is a theory that describes the fundamental structure of matter and interactions among the elementary particles. while the gravitational evidence for the existence of dark matter (dm) is overwhelming, there is no good dm candidate in the standard model framework, and there is n... | search for physics beyond the standard model in pp collisions at the cms experiment with a signature of a z boson plus missing transverse energy |
one of the great mysteries of modern cosmology is the unknown nature of dark matter. a popular candidate for the dark matter component is the axion - the hypothetical pseudoscalar particle. despite numerous attempts, the axion or axionlike particles have not been reliably detected. we study axion-mediated exchange betw... | electronic structure of triatomic molecules for search of axionlike particles |
dark matter candidate particles able to induce nuclear recoils can also be studied using the so-called directionality approach. in this case the correlation between the nuclear recoils direction and the earth motion in the galactic frame is studied. several experimental techniques to explore the directionality approach... | dark matter directionality approach |
we examine a minimally modified version of the minimal universal extra dimension, using electric and magnetic dipole moments and higgs portals operators to describe new interactions between fermionic dark matter and standard model particles. we assume the dark matter in the form of weakly interacting massive particle (... | revisiting the minimal universal extra dimensions with mass-dimension-five operators |
measurements of the fine structure constant α, using methods from atomic, condensed-matter, and particle physics, are powerful tests of the overall consistency of theory and experiment across physics. we have measured α = 1/137.035999046(27), at 2.0×10-10 accuracy, via the recoil frequency of cesium-133 atoms in a matt... | measurement of the fine structure constant as a test of the standard model |
prospects for direct collider searches for the qcd axion - a dark matter candidate that presents a solution to the strong cp problem - are limited at best. however, in the context of supersymmetry (susy), existing collider experiments may be sensitive to the axion's super-partner, the axino. we will discuss a physics m... | prospects of collider searches for dfsz axinos |
the axion was originally proposed as a solution to the strong cp problem, however, it has been gaining popularity in recent years as a cold dark matter candidate. many find the dfsz axion model to be more compelling than its counterpart (ksvz), due to its gut compatibility. however, the dfsz axion is significantly more... | receiver noise characterization for admx run 1c-extended |
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