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we review our recent results on dark matter from starobinsky supergravity. in this context, a natural candidate for cold dark matter is the gravitino. on the other hand, assuming the supersymmetry broken at scales much higher than the electroweak scale, gravitinos are superheavy particles. in this case, they may be non... | dark matter from starobinsky supergravity |
we demonstrate that in a two component dark matter (dm) set up, when dm$_1$ is equilibrated with the thermal bath, the other dm$_2$, in spite of having feeble or negligible interaction with the sm particles, can be brought to equilibrium just by having sizeable interaction with dm$_1$. we propose that such dm candidate... | dynamics of the pseudo-fimp in presence of a thermal dark matter |
despite the compelling amount of evidence for the existence of dark matter, its exact nature is still one of the main open questions in modern physics. a great experimental effort has been performed to probe one of the most popular dark matter candidates, the weakly interacting massive particle or wimp, however, there ... | searching for feebly interacting dark matter at colliders and beam-dump experiments |
we describe a scenario where the smallness of neutrino masses is related to a global symmetry that is only violated by quantum gravitational effects. the coupling of neutrinos to gauge singlet right-handed fermions is attributed to symmetry preserving gravitational operators suppressed by the planck mass, in this frame... | gravitational interactions and neutrino masses |
we construct a static and spherical excited state without singularities in renormalizable quantum gravity with background-free nature asymptotically. its diameter is given by a correlation length of the quantum gravity, longer than the planck length by 2 orders of magnitude, and it has a schwarzschild tail outside. the... | localized massive excitation of quantum gravity as a dark particle |
the nature of dark matter remains a mystery, although enormous efforts have been made to search for dark matter candidate particles. scalar field dark matter is one of the most prominent options that is being explored by the various precision experiments, such as gravitational-wave detectors, atomic clocks and gravity ... | searching for scalar field dark matter with short-range gravity experiments |
we present new results on the thermal production yield of a hypothetical state made of six quarks uuddss assuming its production in heavy-ion collisions at the cern large hadron collider (lhc). a state with this quark content and mass low enough to be stable against decay in timescales of the order of the age of the un... | thermal production of sexaquarks in heavy-ion collisions |
low energy threshold detectors are necessary in many frontier fields of the experimental physics. in particular these are extremely important for probing dark matter (dm) possible candidates. we present the activity of the demiurgos r&d project, a novel detection approach that exploits rare gas crystals maintained ... | particle detection in rare gas solids: demiurgos experiment |
sensitive magneto-optical polarimetry was proposed by e. iacopini and e. zavattini in 1979 to detect vacuum electrodynamic non-linearity, in particular vacuum magnetic birefringence (vmb). this process is predicted in qed via the fluctuation of electron–positron virtual pairs but can also be due to hypothetical axion-l... | optical polarimetry for fundamental physics |
we study models of gauge-mediated supersymmetry breaking with messengers that do not belong to complete representations of grand-unified gauge groups. we show that certain setups characterized by a heavy wino can greatly improve the fine-tuning with respect to models with unified messengers, such as minimal gauge media... | improving naturalness in gauge mediation with nonunified messenger sectors |
extra dimensions (ed) have been used as attempts to explain several phenomena in particle physics over the years. in this paper we investigate the role of an abelian gauge field as mediator of the interaction between dark matter (dm) and standard model (sm) particles, in a model with two flat and transverse ed compacti... | fat brane, dark matter and localized kinetic terms in six dimensions |
we discuss a mechanism where charged lepton masses are derived from one-loop diagrams mediated by particles in a dark sector including a dark matter candidate. we focus on a scenario where the muon and electron masses are generated at one loop with new o (1 ) yukawa couplings. the measured muon anomalous magnetic dipol... | radiative seesaw mechanism for charged leptons |
universal extra dimension (ued) is a well-motivated and well-studied scenario. one of the main motivations is the presence of a dark matter (dm) candidate, namely the lightest level-one kaluza-klein particle, in the particle spectrum of ued. the minimal version of ued (mued) scenario is highly predictive with only two ... | minimal and nonminimal universal extra dimension models in the light of lhc data at 13 tev |
a descriptive summary is given of the results to-date from the framed standard model (fsm) which: assigns geometric meaning to the higgs field and to fermion generations, hence offering an explanation for the observed mass and mixing patterns of quarks and leptons, reproducing near-quantitatively 17 of sm parameters wi... | generation patterns, modified γ - z mixing, and hidden sector with dark matter candidates as framed standard model results |
axions, the hypothetical particles restoring the charge-parity symmetry in the strong sector of the standard model, and one of the most prone candidates for dark matter, are well-known to interact with plasmas. in a recent publication [phys. rev. lett. {\bf 120}, 181803 (2018)], we have shown that if the plasma dynamic... | axion production in unstable magnetized plasmas: an active source of dark-matter |
in this work we explore some cosmological properties coming from the particle and future horizons when are considered as candidates to model the dark energy sector within a holographic context in a flat friedmann-lemaitre-robertson-walker universe; we focus on some thermodynamics characteristics of the resulting dark e... | modeling holographic dark energy with particle and future horizons |
in this paper, we discuss dark matter candidates in a visible heavy qcd axion model. there, a mirror copied sector of the standard model with mass scales larger than the standard model is introduced. by larger mass scales of the mirrored sector, the qcd axion is made heavy via the axial anomaly in the mirrored sector w... | dark matter candidates in a visible heavy qcd axion model |
the standard model (sm) higgs boson, with its experimental discovery in 2012, has long been an interesting particle to study with the intention of exploring new physics ideas beyond the sm (bsm). its properties are still not well understood, and there are several features in lhc run 1 and run 2 data which point at the ... | exploring lhc run 1 and 2 data using the madala hypothesis |
particle detectors based on liquid argon are now recognised as an attractive technology for dark matter direct detection and coherent elastic neutrino-nucleus scattering measurement. a program using a dual-phase liquid argon detector with a fiducial mass of 200 kg to detect coherent elastic neutrino-nucleus scattering ... | characterization of vuv4 sipm for liquid argon detector |
in this thesis, we start by reviewing all constraints applying on self-interacting dm with a light mediator considering well-known higgs portal and kinetic mixing portal models as concrete examples. then, we elaborate on the sommerfeld effect, and we study its many implications on self-interacting dm models with light ... | producing and constraining self-interacting hidden sector dark matter |
a plausible dark matter candidate is an ultralight bosonic particle referred to as fuzzy dark matter. the equivalent mass-energy of the fuzzy dark matter boson is ~ 10-22 ev and has a corresponding de broglie wavelength of kiloparsec scale, thus exhibiting wave behaviour in scales comparable to a galactic core, which c... | dynamical friction due to fuzzy dark matter on satellites described by axisymmetric logarithmic potentials |
in this paper we examine gauge coupling unification of the non-susy so(10) grand unified theory proposed by babu and mohapatra [phys. lett. b 715, 328 (2012), 10.1016/j.physletb.2012.08.006] at the two loop level. this theory breaks down to the standard model in a single step and has the distinguishing feature of tev n... | two loop unification of non-susy so(10) gut with tev scalars |
the persistent 3−4σ discrepancy between the experimental result from brookhaven national laboratory (bnl) for the anomalous magnetic moment of the muon, (g−2)μ, and its standard model (sm) prediction, was confirmed recently by the “muon g-2” result from fermilab. the combination of the two measurements yields a deviati... | (g−2)μ and susy∗ |
universal extra dimension models with kaluza-klein parity provide us excellent candidates for dark matter. we consider phenomenological universal extra dimension models where the kaluza-klein (kk) mass spectrum is different from that of the minimal universal extra dimension model, and compute the thermal relic abundanc... | thermal relic abundance of the lightest kaluza-klein particle in phenomenological universal extra dimension models |
we perform a detailed study of an effective field theory which includes the standard model particle content extended by a pair of weyl fermionic su(2) doublets with opposite hypercharges. a discrete symmetry guarantees that a linear combination of the doublet components is stable and can act as a candidate particle for... | effective theory for electroweak doublet dark matter |
axion-like particles (alps) are a promising kind of dark matter candidate particle that are predicted to couple with photons in the presence of magnetic fields. the oscillations between photons and alps traveling in the magnetic fields have been used to constrain alp properties. in this work, we obtain some new constra... | constraints on axion-like particles with different magnetic field models from the pks 2155-304 energy spectrum |
we consider the condensate of $q$-deformed bosons as a model of dark matter. our observations demonstrate that for all $q$ values, the system condenses below a $q$-dependent critical temperature $t^{q}_c$. the critical temperature interestingly tends to infinity when $q\rightarrow 0$, so that the $q$- deformed boson ga... | deformed boson condensate as a model of dark matter |
in this thesis a simple extension of the standard model has been investigated. the standard model gauge group has been extended by an additional $u(1)_x$ group. the model introduces a new higgs particle as well as three particles (a gauge boson and two majorana fermions) that can be candidates for dark matter. the thes... | vector-fermion dark matter |
bosonic super-wimps, including pseudoscalar and vector particles, are dark matter candidates. until now, many underground experiments searches for super-wimps have been performed in the mass range of a few $\rm kev/c^2$ to 1 $\rm mev/c^2$. all these searches utilize the absorption process of a super-wimp by a target at... | comments on bosonic super-wimps search experiments |
new physics scenarios beyond the standard model predict the existence of milli-charged particles. so far, only spin-1/2 and spin-0 milli-charged particles have been considered in literature, leaving out the interesting case of spin-1. we propose a minimal unitary and renormalizable model of massive milli-charged vector... | dark matter and spin-1 milli-charged particles |
in this thesis, various extensions of the scalar sector have been considered comprising of different ${su(2)_l}$ multiplets. if the extended scalar sector participates in the electroweak symmetry breaking then these extra scalars need to couple with the known standard model particles. in this work, it has been shown th... | exploring extensions of the scalar sector of the standard model |
axion-like particles (alps) are pseudo-scalar particles that are candidates for ultralight dark matter. alps interact with photons slightly and cause the rotational oscillation of linear polarization. dance searches for alp dark matter by enhancing the rotational oscillation in a bow-tie ring cavity. the signal to nois... | dark matter axion search with ring cavity experiment dance: development of control system for long-term measurement |
this paper presents a systematic and accurate treatment of the evolution of cosmological perturbations in self-interacting dark matter models, for particles which decoupled from the primordial plasma while relativistic. we provide a numerical implementation of the boltzmann hierarchies developed in a previous paper [jc... | self-interacting dark matter in cosmology: accurate numerical implementation and observational constraints |
dark energy is an elusive concept, which has been introduced two decades ago in order to make the acceleration of the universe a comprehensible phenomenon. however, the nature of this energy is far from being understood, both from a fundamental as well as an observational way. in this work we study cosmological consequ... | dark energy based on exotic statistics |
models with gauge symmetry s u (3 )c⊗s u (3 )l⊗u (1 )n have different candidates for dark matter, for example, a heavy neutral fermion interacting with standard model particles through different mediators, scalar and vector portals. at the same time, these portals can produce signals in the anomalous magnetic moment of... | constraining the 3 -3 -1 model with heavy neutral leptons using (g -2 )μ and dark matter observables |
if the lhc is able to produce dark matter particles, they would appear at the end of cascade decay chains, manifesting themselves as missing transverse energy. however, such "dark matter candidates" may decay invisibly later on. we propose to test for this possibility by studying the effect of particle widths on the ob... | how to prove that the lhc did not discover dark matter |
over the past decades, several ideas and technologies have been developed to directly detect weakly interacting massive particles (wimp) from the galactic halo. all these detection strategies share the common goal of discriminating a wimp signal from the residual backgrounds. by directly detecting wimps, one can measur... | comparing readout strategies to directly detect dark matter |
sterile neutrinos are a minimal extension of the standard model of particle physics. if their mass is in the kilo-electron-volt regime, they are viable dark matter candidates. one way to search for sterile neutrinos in a laboratory-based experiment is via tritium beta decay, where the new neutrino mass eigenstate would... | development of a silicon drift detector system for the tristan project-future search for sterile neutrinos |
we examine the bounds on resonantly-produced sterile neutrino dark matter from phase-space densities of milky way dwarf spheroidal galaxies (dsphs). the bounds result from a derivation of the dark matter coarse-grained phase-space density from the stellar kinematics, which allows us to explore bounds from some of the m... | bounds on resonantly-produced sterile neutrinos from phase space densities of milky way dwarf galaxies |
white dwarfs cool through several processes, including the emission of weakly interacting particles such as neutrinos. by their very nature, weakly interacting particles are difficult to observe. in pulsating white dwarfs, however, the effect they have on the cooling rate translates into an observable change in the pul... | non-luminous sources of cooling in pulsating white dwarfs |
in this talk, we will review inert triplet model (itm) which provide candidate for dark matter (dm) particles. then we study possible decays of higgs boson to dm candidate and apply current experimental data for invisible higgs decay to constrain parameter space of itm. we also consider indirect search for dm and use f... | footprint of triplet scalar dark matter in direct, indirect search and invisible higgs decay |
the charged black hole thermodynamics is corrected in terms of the quantum gravity effects. most of the quantum gravity theories support the idea that near the planck scale, the standard heisenberg uncertainty principle should be reformulated by the so-called generalized uncertainty principle (gup) which provides a per... | quantum gravity effects on charged microblack holes thermodynamics |
massive particles with self interactions of the order of 0.2 barn/gev are intriguing dark matter candidates from an astrophysical point of view. current and past experiments for direct detection of massive dark matter particles are focusing to relatively low cross sections with ordinary matter, however they cannot rule... | a balance for dark matter bound states |
we find constraints on the highest scale of symmetry breaking of a model with gauge symmetry $su(3)_c \otimes su(3)_l \otimes u(1)_x$ with heavy neutral leptons in the fermion triplets, calculating the anomalous magnetic moment of the muon and using results of the relic abundance of dark matter and experiments searchin... | constraining the $3-3-1$ model with heavy neutral leptons using $(g-2)_{\\mu}$ and dark matter observables |
macroscopic dark matter (macros) are 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 pass through the atmosphere. we produce constraints for... | macroscopic dark matter constraints from bolide camera networks |
the empirical absence to date of particles obeying parastatistics in high-energy collider experiments might be due to their large masses, weak scale couplings, and lack of gauge couplings. paraparticles of order p =2 must be pair produced, so the lightest such particles are absolutely stable and so are excellent candid... | diagrams and parastatistical factors for cascade emission of a pair of paraparticles |
we update the parameter space of a singlet majorana fermion dark matter model, in which the standard particles interact with the dark sector through the mixing of a singlet scalar and the higgs boson. in this model both the dark matter and the singlet scalar carry lepton number, the latter being a bilepton. the stabili... | majorana dark matter through a narrow higgs portal |
weakly interactive slim particles (wisps), including the qcd axion, axion-like particles (alps), and hidden photons, are considered to be strong candidates for the dark matter carrier particle. the microwave cavity experiment wispdmx is the first direct wisp dark matter search experiment probing the particle masses in ... | wispdmx: a haloscope for wisp dark matter between 0.8-2 $\\mu$ev |
dark matter (dm) is one of the biggest mystery in the universe. in this review, we start reporting the evidences for this elusive component and discussing about the proposed particle candidates and scenarios for such phenomenon. then, we focus on recent results obtained for rotating disc galaxies, in particular for low... | fundamental properties of the dark and the luminous matter from the low surface brightness discs |
the xenon1t experiment is the most recent stage of the xenon dark matter search, aiming for the direct detection of dark matter candidates, such as the weakly interacting massive particles (wimps). the projected sensitivity for the spin-independent wimp-nucleon elastic scattering cross-section is σ ≈ 2 × 10-47 cm2 for ... | optical response of highly reflective film used in the water cherenkov muon veto of the xenon1t dark matter experiment |
the existence of dark matter suggests the presence of a dark sector, consisting of particles neutral under all standard model forces. various "portals" can connect the dark sector to the standard model sector. two popular examples are the vector portal, which gives rise to a "dark photon" ( a'), and the higgs portal, w... | searching for dark sectors |
one of the simplest models that allows for an electroweak (ew) strong first order phase transition (sfopt) while having a higgs with the observed mass of 125 gev is the singlet extension of the standard model (sm). we discuss two different phases of a complex singlet extension of the sm. if the singlet has a zero vacuu... | gravitational waves and the higgs mass |
we propose a higgs-related but spin-1 2 dark matter candidate with a mass that is comparable to that of the higgs. this particle is a weakly interacting massive particle (wimp) with an r-parity of - 1, but it can be distinguished from a neutralino by its unconventional couplings to w and z bosons. other neutral and cha... | dark matter candidate with well-defined mass and couplings |
a series of brief reviews collected in the present issue present various candidates for cosmological dark matter (dm) predicted by models of particle physics. the range from superlight axions to extended objects is covered. though the possible list of candidates is far from complete, it gives the flavor of the extensiv... | introduction |
the small quark mixing, described by the cabibbo-kobayashi-maskawa (ckm) matrix in the standard model, may be a clue to reveal new physics around the tev scale. we consider a simple scenario that extra particles in a hidden sector radiatively mediate the flavor violation to the quark sector around the tev scale and eff... | hidden sector behind the ckm matrix |
a neutral dark matter (dm) particle with a magnetic dipole moment has a very different direct detection phenomenology with respect to standard candidates. this is due to the peculiar functional form of the differential cross section for scattering with nuclei. such a candidate could be a bound state of charged particle... | direct detection signals of dark matter with magnetic dipole moment |
one of the most puzzling problems of modern physics is the identification of the nature a non-relativistic matter component present in the universe, contributing to more than 25$\%$ of the total energy budget, known as dark matter. weakly interacting massive particles (wimps) are among the best motivated dark matter ca... | dark matter phenomenology : from simplified wimp models to refined alternative solutions |
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 ma... | axion search with babyiaxo in view of iaxo |
we explore a fermionic dark matter model with a possible extension of standard model of particle physics into two higgs doublet model. higgs doublets couple to the singlet fermionic dark matter through a non-renormalisable coupling providing a new physics scale. we explore the viability of such dark matter candidate an... | extension of minimal fermionic dark matter model: a study with two higgs doublet model |
given the lack of empirical evidence of weakly interacting dark matter, it is reasonable to look to other candidates such as a confining dark sector with a similar number of particles as the standard model. twin higgs mirror matter is one such model that is a twin of the standard model with particles masses 3--6 times ... | mirror neutron stars: how qcd can be used to study dark matter through gravitational waves |
we develop a new class of clockwork theories with an augmented structure of the near-neighbour interactions along a one-dimensional closed chain. such a topology leads to new and attractive features in addition to generating light states with hierarchical couplings via the usual clockwork mechanism. for one, there emer... | a closed clockwork theory: &z;2 parity and more |
this work was nominated as an outstanding phd thesis by the lpsc, université grenoble alpes, france. the lhc run 1 was a milestone in particle physics, leading to the discovery of the higgs boson, the last missing piece of the so-called "standard model" (sm), and to important constraints on new physics, which challenge... | higgs, supersymmetry and dark matter after run i of the lhc |
the axion was first introduced as a consequence of the peccei-quinn mechanism to solve the cp problem in strong interactions of particle physics and is a well-motivated cold dark matter candidate. this particle is expected to interact extremely weakly with matter, and its mass is expected to lie in μ ev range with the ... | noise temperature measurements for axion haloscope experiments at ibs/capp |
for the warm dark matter (wdm) candidates the momentum distribution of particles becomes important, since it can be probed with observations of lyman-α forest structures and confronted with coarse grained phase space density in galaxy clusters. we recall the calculation [m. kaplinghat, phys. rev. d 72, 063510 (2005)] o... | applicability of approximations used in calculations of the spectrum of dark matter particles produced in particle decays |
in 2012 the discovery of the higgs boson by the atlas and cms collaborations set a milestone in particle physics by finding the missing piece of the standard model. nonetheless some questions are still open: the origin of the mass of the neutrino and finding the missing candidate for dark matter are some examples. one ... | overview of the vector-like quark searches with the lhc data collected by the atlas detector |
an appealing candidate of the galactic dark matter is the axion, which was postulated to solve the strong cp (charge-conjugation parity) violation problem in the standard particle theory. a new experimental method is proposed to determine the axion mass. the method uses collectively and coherently excited atoms or mole... | new method of galactic axion search |
the znwo4 crystal is a very promising scintillator to investigate dark matter candidates able to induce just nuclear recoils by exploiting the directionality technique. in particular, the anisotropy of the light output for heavy particles in this scintillator can be considered to point out the presence — in the diurnal... | low background techniques toward a znwo4 directionality experiment |
in the left-right twin higgs (lrth) model, the neutral \hat{s} is a candidate for weakly interacting massive particle dark matter (dm). if its mass is lighter than half of the standard model-like higgs boson h, the new invisible decay h\to \hat{s}\hat{s} will become open. in this paper, we examine the status of a light... | constraining dark matter in the lrth model with latest lhc, xenon100 and lux data |
we have discovered 11 ultra-faint (r ≲ 22.1) low surface brightness (lsb, central surface brightness 23 ≲ μr ≲ 26) dwarf galaxy candidates in one deep virgo field of just 576 arcmin2 obtained by the large binocular camera at the large binocular telescope. their association with the virgo cluster is supported by their d... | the detection of ultra-faint low surface brightness dwarf galaxies in the virgo cluster: a probe of dark matter and baryonic physics |
we consider a novel cosmological scenario in which a curvaton is long-lived and plays the role of cold dark matter (cdm) in the presence of a short, secondary inflation. non-trivial evolution of the large scale cosmological perturbation in the curvaton scenario can affect the duration of the short term inflation, resul... | curvaton as dark matter with secondary inflation |
searches for dark matter (dm) produced using collider data probe wide regions of the allowed parameter space of many models and have become competitive with more traditional searches. the interpretations of the results can be efficiently performed in simplified models, which feature only a mediator and a dm candidate t... | dm+$b\\bar b$ simulations with dmsimp: an update |
we explore a new horizon of modified gravity from the viewpoint of the particle physics. as a concrete example, we take the $f(r)$ gravity to raise a question: can a scalar particle ("scalaron") derived from the $f(r)$ gravity be a dark matter candidate? we place the limit on the parameter in a class of $f(r)$ gravity ... | modified gravity explains dark matter? |
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 over ... | smallsat solar axion and activity x-ray imager (ssaxi) |
\begin{abstract} nowadays, no dark matter candidates have been discovered. we consider two possible reasons for that, both related to the approach of on-peak resonance searching for. as is believed usually, a new particle suits the conditions that the ratio of the width to the mass is less than $1-3 \%$ and a narrow wi... | on direct search for dark matter in scattering processes within yukawa model |
the axion is a well motivated hypothetical elementary particle that must exist in nature if the strong cp problem of qcd is explained by the spontaneous breaking of a peccei-quinn symmetry. not only would the discovery of the axion solve deep issues in qcd, an axion with a mass of muev - mev could account for most or a... | a piezoelectrically tuned rf-cavity search for dark matter axions |
the most compelling candidates for dark matter to day are wimps and axions. the applicability of gasesous time projection chambers (tpcs) with micromesh gas structures (micromegas) to the search of these particles is explored within this work. both particles would produce an extremely low rate at very low energies in p... | micromegas for dark matter searches: cast/iaxo & trex-dm experiments |
the search for dark matter is of fundamental importance to our understanding of the universe. weakly-interacting slim particles (wisps) such as axions and hidden sector photons (hsps) are well motivated candidates for the dark matter. some of the most sensitive and mature experiments to detect wisps rely on microwave c... | cross-correlation measurement techniques for cavity-based axion and weakly interacting slim particle searches |
in 2005 sheldon glashow has proposed his sinister model, opening the path to composite-dark-matter scenarios, in which heavy stable electrically charged particles bound in neutral atoms play the role of dark matter candidates. though the general problem of new stable single charged particles, forming with ordinary elec... | 10 years of dark atoms of composite dark matter |
the dama/libra-phase1 and the former dama/nai data (cumulative exposure 1.33 ton × yr, corresponding to 14 annual cycles) give evidence at 9.3σ 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 radio-p... | particle dark matter in the galactic halo |
in the conventional cosmology masses of the stable supersymmetric relics, candidates for the dark matter (dm) particles, should be typically below 1 tev. this is in conflict with the lhc bounds on the low energy susy. however, in $r2$-gravity the masses of the stable particles with the interaction strength typical for ... | new options for susy-kind dark matter |
improving observation of galactic-scale structure provide important clues to dark matter properties. while weakly interacting massive particles (wimps) provide cold dark matter on galactic scales, beyond-wimp candidates suppress the galactic-scale structure formation. nevertheless, directly constraining microscopic mod... | fingerprint matching of beyond-wimp dark matter: neural network approach |
the quest for the particle nature of dark matter is one of the big open questions of modern physics. a well motivated candidate for dark matter is the so-called wimp - a weakly interacting massive particle. recently several theoretically well-motivated models with dark matter candidates in a mass region below the wimp ... | direct dark matter search with the cresst experiment |
we analyze the dark matter (dm) puzzle in a class of models with gauge symmetry su(3)c ⊗ su(3)l ⊗ u(1)n, taking into account the constraints coming from planck observations of the dm relic density, direct detection searches with xenon1t, and indirect detection using fermi‑lat data. the model has two possible candidates... | the dark matter puzzle in a class of models with gauge symmetry su(3)c ⊗ su(3)l ⊗ u(1)n |
the atomiki anomaly can be interpreted as a new light vector boson. if such a new particle exists, it could be a mediator between the standard model sector and the dark sector including the dark matter. we discussed some simple effective models with these particles. in the models, the secluded dark matter models are go... | atomki anomaly and the secluded dark sector |
despite many decades of study the physical origin of 'dark matter' (dm) in the universe remains elusive. in this letter we calculate the properties of a completely new dm candidate—bose-einstein condensates formed from a recently discovered bosonic particle in the light-quark sector, the d ∗ ( 2380 ) bose-einstein cond... | a new possibility for light-quark dark matter |
in this work, we discuss two component fermionic fimp dark matter (dm) in a popular $b-l$ extension of the standard model (sm) with inverse seesaw mechanism. due to the introduced $\mathbb{z}_{2}$ discrete symmetry, a kev sm gauge singlet fermion is stable and can be a warm dm candidate. also, this $\mathbb{z}_{2}$ sym... | two component fimp dm in a $u(1)_{b-l}$ extension of the sm |
we analyze a recently proposed extension of the standard model based on the s u (4 )×s u (2 )l×u (1 )x gauge group, in which baryon number is interpreted as the fourth color and dark matter emerges as a neutral partner of the ordinary quarks under s u (4 ). we show that under well-motivated minimal flavor-violating ass... | dark matter from unification of color and baryon number |
the cold dark matter (cdm) candidate with weakly interacting massive particles can successfully explain the observed dark matter relic density in cosmic scale and the large-scale structure of the universe. however, a number of observations at the satellite galaxy scale seem to be inconsistent with cdm simulation. this ... | self-interacting dark matter with scalar dilepton mediator |
the znwo4 crystal scintillator has unique features that make it very promising to realize a pioneering experiment to pursue dark matter investigation with the directionality technique. in particular in this detector the light output and the scintillation pulse shape for heavy particles (p, α, nuclear recoils) depend on... | znwo4 anisotropic scintillator for dark matter investigation with the directionality technique |
the axion, a hypothetical fundamental particle, was postulated as an attractive solution to the cp problem in quantum chromodynamics and believed to be an ideal candidate for the cold dark matter. the center for axion and precision physics research of the institute for basic science has launched a state of the art expe... | axion research at capp/ibs |
in mssm scenarios where the gravitino is the lightest supersymmetric particle (lsp), and therefore a viable dark matter candidate, the stop tilde{t}_1 could be the next-to-lightest superpartner (nlsp). for a mass spectrum satisfying m_{widetilde{g}}+m_t>m_{tilde{t}_1}>m_{widetilde{g}}+m_b+m_w, the stop decay is d... | stop decay with lsp gravitino in the final state: tilde{t}_1rightarrow widetilde{g} w b |
we propose a simple gauged u(1)$_{b-l}$ extension of the minimal supersymmetric standard model (mssm), where r-parity is conserved as usual in the mssm. the global $b-l$ (baryon number minus lepton number) symmetry in the mssm is gauged and three mssm gauge-singlet chiral multiplets with a unit $b-l$ charge are introdu... | r-parity conserving minimal susy $b-l$ model |
the event detection rates for the weakly interacting massive particles (wimp) (a dark matter candidate) are calculated with 73ge as the detector. the calculations are performed within the deformed shell model (dsm) based on hartree-fock states. first, the energy levels and magnetic moment for the ground state and two l... | deformed shell model study of event rates for wimp-73ge scattering |
we assign the chiral fermion fields of the standard model to triplets of flavor (family, generation, horizontal) $su(3)_f$ symmetry, for anomaly freedom add one triplet of sterile right-handed neutrino fields, and gauge that symmetry. first we demonstrate that the resulting quantum flavor $su(3)_f$ dynamics completely ... | a model that underlies the standard model |
dark matter constitutes about 23% of the total energy density of the universe, but its properties are still little known besides that it should be composed by cold and weakly interacting particles. many beyond standard model theories can provide proper candidates to serve as dark matter and the axion introduced to solv... | axions and dark matter |
the framed standard model (fsm), constructed to explain the empirical mass and mixing patterns (including cp phases) of quarks and leptons, in which it has done quite well, gives otherwise the same result as the standard model (sm) in almost all areas in particle physics where the sm has been successfully applied, exce... | a vacuum transition in the fsm with a possible new take on the horizon problem in cosmology |
probing low mass (sub-gev—few gev) weakly interacting massive particle (wimp) candidates of dark matter through wimp-induced nuclear recoils in direct detection experiments requires the use of detector materials consisting of low mass target nuclei and low threshold energy. here we explore the potential of superheated ... | probing low-mass wimp candidates of dark matter with tetrafluoroethane superheated liquid detectors |
we investigate monotop signatures arising from phenomenological models of fermionic top partners, which are degenerate in mass and decay into a bosonic dark matter candidate, either spin 0 or spin 1. such a model provides a monotop signature as a smoking gun, while conventional searches with t t ¯ + missing transverse ... | monotop signature from a fermionic top partner |
the axion is a hypothetical elementary particle postulated by the peccei-quinn theory to resolve the strong cp problem in qcd. if axions exist and have low mass, they are a candidate for dark matter as well. so far our knowledge of the properties of the qcd axion rests on semi-classical arguments and effective theory. ... | the qcd axion beyond the classical level: a lattice study |
global symmetry can guarantee the stability of dark matter particles (dmps). however, the nonminimal coupling between dark matter (dm) and gravity can destroy the global symmetry of dmps, which in turn leads to their decay. under the framework of nonminimal coupling between scalar singlet dark matter (ssdm) and gravity... | observational constraints on dark matter decaying via gravity portals |
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