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we propose a minimal predictive scenario for dark matter and radiative neutrino mass where the relic abundance of dark matter is generated from a hybrid setup comprising of both thermal freeze-out as well as non-thermal freeze-in mechanisms. considering three copies of fermion triplets and one scalar doublet, odd under... | when freeze-out precedes freeze-in: sub-tev fermion triplet dark matter with radiative neutrino mass |
in our recently proposed quantum theory of gravity, the universe is made of ‘atoms‘” of space-time-matter (stm). planck scale foam is composed of stm atoms with planck length as their associated compton wave-length. the quantum dispersion and accompanying spontaneous localization of these stm atoms amounts to a cancell... | dark energy as a large scale quantum gravitational phenomenon |
we examine thermal warm dark matter (wdm) models that are being probed by current constraints, and the relationship between the particle dark matter spin and commensurate thermal history. we find significant corrections to the linear matter power spectrum for given thermal wdm particle masses. two primary classes are e... | entering the era of measuring sub-galactic dark matter structure: accurate transfer functions for axino, gravitino, and sterile neutrino thermal warm dark matter |
dark matter is a well-established theoretical addition to the standard model supported by many observations in modern astrophysics and cosmology. in this context, the existence of weakly interacting massive particles represents an appealing solution to the observed thermal relic in the universe. indeed, a large experim... | sensitivity of the ship experiment to light dark matter |
this article reviews the experimental activity that has been carried out within the infn demiurgos research and development (r &d) project. this r &d concerns the study of possible innovative experimental approaches for the detection of low-energy-releases of feeble interacting particles within the matter. poss... | particle detection in rare gas solid crystals: a feasibility experimental study—exploring new ways for dark matter searches |
we explore a common symmetrical origin for two long standing problems in particle physics: the strong cp and the fermion mass hierarchy problems. the peccei-quinn mechanism solves the former one with an anomalous global u(1)pq symmetry. here we investigate how this u(1)pq could at the same time explain the fermion mass... | natural axion model from flavour |
axions and axion-like particles are excellent low-mass dark matter candidates. the madmax experiment aims to directly detect galactic axions with masses between 40 and 400 μ ev by using the axion-induced emission of electromagnetic waves from boundaries between materials of different dielectric constants under a strong... | a first proof of principle booster setup for the madmax dielectric haloscope |
fuzzy dark matter (fdm) has recently gained attention as a motivated candidate for the dark matter (dm) content of the universe, as opposed to the commonly assumed cold dm (cdm), since the soliton profile intrinsic to fdm models was found to be particularly well suited to reproduce observed galaxy mass profiles. while ... | new bounds on fuzzy dark matter from galaxy-galaxy strong-lensing observations |
lagrangian algorithms to simulate the evolution of cold dark matter (cdm) are invaluable tools to generate large suites of mock halo catalogues. in this paper, we first show that the main limitation of current semi-analytical schemes to simulate the displacement of cdm is their inability to model the evolution of overd... | muscle-ups: improved approximations of the matter field with the extended press-schechter formalism and lagrangian perturbation theory |
we study the high-scale validity of two kinds of two higgs doublet models (2hdm), namely, type-ii and type-x, but with a scalar su(2) singlet dark matter (dm) candidate in addition in each case. the additional quartic couplings involving the dm particle in the scalar potential in both the scenarios bring in additional ... | high scale validity of two higgs doublet scenarios with a real scalar singlet dark matter |
the discovery of higgs particle has ushered in a new era of particle physics. even though the list of members of the standard theory of particle physics is now complete, the shortcomings of the theory became ever more acute. it is generally considered that the best solution to the problems is an electron–positron colli... | the international linear collider project—its physics and status |
the nmssm provides an excellent dark matter candidate, usually the lightest neutralino (χ ̃10) being the lightest supersymmetric particle (lsp), in the universe. it is a mixture of the bino, the neutral wino, the neutral higgsinos, and the singlino. in this work, we investigate the features of the lightest neutralino b... | dark matter in nmssm with small λ and κ |
proton decay is usually discussed in the context of grand unified theories. however, as is well known, in the standard model effective theory proton decay appears in the form of higher-dimensional nonrenormalizable operators. here, we study systematically the one-loop decomposition of the d =6 b +l violating operators.... | proton decay at one loop |
we study dark matter physics in the minimal supersymmetric standard model with non-universal gaugino masses at the unification scale. in this scenario, the specific ratio of wino and gluino masses realizes the electro-weak scale naturally and achieves 125 gev higgs boson mass. then, relatively light higgsino is predict... | study of dark matter physics in non-universal gaugino mass scenario |
we show that dark-matter candidates with large masses and large nuclear interaction cross sections are detectable with terrestrial radar systems. we develop our results in close comparison to successful radar searches for tiny meteoroids, aggregates of ordinary matter. the path of a meteoroid (or suitable dark-matter p... | new constraints on macroscopic dark matter using radar meteor detectors |
we consider a dark confining gauge theory with millicharged ultra-light pions (ulp) and heavy baryons as dark matter candidates. the model simultaneously realizes the ultra-light (strongly-interacting ultralight millicharged particle or "stump") and superheavy ("wimpzilla") dark matter paradigms, connected by the confi... | ultra-light pion and baryon wimpzilla dark matter |
in this work we show that weyl particles can exist at different states in zero electromagnetic field, either as free particles, or at localized states described by a parameter with dimensions of mass. we also calculate the electromagnetic fields that should be applied in order to modify the localization of weyl particl... | on the localization properties of weyl particles |
the candidate of minimal dark matter (mdm) is limited if one demands perturbativity up to a very high scale, and it was believed that the mdm model with a real scalar septuplet could keep perturbative up to the planck or grand unified theory scale. in this work we point out that it is not true after taking into account... | perturbativity limits for scalar minimal dark matter with yukawa interactions: septuplet |
we revisit higgs inflation in the framework of a minimal extension of the standard model gauge symmetry by a u (1 )b -l factor. various aspects are taken into account, with particular focus on the role of the supersymmetry-breaking (susy) scale and the cosmological constraints associated with the gravitino. the scalar ... | gravitino dark matter, nonthermal leptogenesis, and low reheating temperature in no-scale higgs inflation |
wave dark matter (ψdm) composed of extremely light bosons (mψ ∼ 10 - 22 ev), with quantum pressure suppressing structures below a kpc-scale de broglie wavelength, has become a viable dark matter candidate. compared to the conventional free-particle ψdm (fpψdm), the extreme-axion ψdm model (eaψdm) proposed by zhang &... | halo abundance and assembly history with extreme-axion wave dark matter at z ≥ 4 |
we present an inflationary model in which the standard model higgs doublet field with non-minimal coupling to gravity drives inflation, and the effective higgs potential is stabilized by new physics which includes a dark matter particle and right-handed neutrinos for the seesaw mechanism. all of the new particles are f... | higgs inflation, seesaw physics and fermion dark matter |
we study the low scale predictions of the supersymmetric standard model extended by u (1 )b -l×u (1 )r symmetry, obtained from s o (10 ) breaking via a left-right supersymmetric model, imposing universal boundary conditions. two singlet higgs fields are responsible for the radiative u (1 )b -l×u (1 )r symmetry breaking... | exploring the supersymmetric u(1 ) b -l×u(1 ) r model with dark matter, muon g - 2 , and z' mass limits |
the hypothetical s u (3 ) flavor-singlet dibaryon state s with strangeness -2 has been discussed as a dark-matter candidate capable of explaining the curious 5-to-1 ratio of the mass density of dark matter to that of baryons. we study the early-universe production of dibaryons and find that irrespective of the hadron a... | dibaryons cannot be the dark matter |
we study the prospects of characterising dark matter at colliders using machine learning (ml) techniques. we focus on the monojet and missing transverse energy (met) channel and propose a set of benchmark models for the study: a typical wimp dark matter candidate in the form of a susy neutralino, a pseudo-goldstone imp... | using machine learning to disentangle lhc signatures of dark matter candidates |
in the background dynamics of a spatially flat flrw model of the universe, we investigate an interacting dark energy (de) model in the context of lyra’s geometry. pressure-less dust is considered as dark matter, mass of which varies with time via scalar field in the sense that decaying of dark matter particles reproduc... | dynamical stability of an interacting quintessence with varying-mass dark matter particles in lyra manifold |
we introduce the deformed boson condensate and argue that its properties are consistent with the properties of the dark matter (dm). for every candidate of dm, the mass bounds evaluation is important. therefore, the lower and upper bounds of mass are evaluated using the phase space density and observational data for q ... | mass bounds on the deformed bosons as dark matter particles |
the e989 experiment at the fermi national laboratory reported a 4.2 σ discrepancy between the measured magnetic dipole moment of the muon, and its prediction in the standard model (sm). in this study, we address the anomaly by considering a minimal and generic extension to the sm which also provides for a dark matter (... | minimal dark matter model for muon g -2 with scalar lepton partners up to the tev scale |
the existence of dark matter has been established in astrophysics. however, there are no dark matter candidates in the standard model~(sm). if the dark matter particles or their mediator can not interact with sm fermions or gauge bosons, the higgs boson is the only portal to the dark matter. we present a simulation stu... | search for invisible decays of the higgs boson at the ilc |
in this work we present an update to a previous calculation of the next-to-leading order (nlo) corrections to the vector dark matter (vdm) direct detection cross section. the model under investigation is a minimal extension of the standard model (sm) with one extra vector boson and one extra complex scalar field, where... | nlo corrections to vector dark matter direct detection -- an update |
we analyse the trapping of eigenspinors of the charge conjugation operator with dual helicity (elko), in thin and thick string-like models with codimension-2. elko spinor fields describe mass-dimension-one fermions in four dimensions (and, correspondingly, mass-dimension-two fermions in six dimensions), that represent ... | exotic elko on string-like defects in six dimensions |
the bullet cluster has provided some of the best evidence for the λ cold dark matter (λcdm) model via direct empirical proof of the existence of collisionless dark matter, while posing a serious challenge owing to the unusually high inferred pairwise velocities of its progenitor clusters. here, we investigate the proba... | the rise and fall of a challenger: the bullet cluster in λ cold dark matter simulations |
we review gauge invariant 𝒩 = 1 supersymmetric massive u(1) gauge theory coupled to matter and stuckelberg superfields. we focus on the leading order self-energy and vertex correction to the matter field in the massless limit of both the u(1) vector superfield and the stuckelberg superfield. we explicitly verify that ... | stuckelberg susy qed and infrared problem |
this paper examines the transverse momentum spectra of hadrons in the multiparticle production at lhc in the framework of the quark-gluon string model (qgsm). it discusses the dependence of average pt on the masses of mesons and baryons at the lhc energy 7 tev. the qgsm description of the experimental spectra of variou... | average transverse momenta of hadrons at lhc energy 7 tev vs. masses and heavy neutral hadron states |
phonon-mediated kinetic inductance detectors (kids) on silicon substrates have demonstrated both o (10) ev energy resolution and mm position resolution when used as particle detectors, making them strong candidates for instrumenting next-generation rare event experiments such as in looking for dark matter. previous wor... | identifying drivers of energy resolution variation in a multi-kid phonon-mediated detector |
we explore the stopping effect that results from interactions between dark matter and nuclei as the dark matter particles travel underground towards the detector. although this effect is negligible for heavy dark matter particles, there is parameter phase space where the underground interactions of the dark matter part... | earth's stopping effect in directional dark matter detectors |
we consider a simple extension of the standard model that can account for the dark matter and explain the existence of neutrino masses. the model includes a vector-like doublet of su(2), a singlet fermion, and two scalar singlets, all of them odd under a new z_2 symmetry. neutrino masses are generated radiatively by on... | lepton flavor violation and scalar dark matter in a radiative model of neutrino masses |
in extra dimensional theories, the four-dimensional field theory is reduced from a fundamental field theory in the bulk spacetime by integrating the extra dimensional part. in this paper we investigate the effective action of a self-interacting scalar field on a brane in the five-dimensional thick braneworld scenario. ... | effective action of a self-interacting scalar field on brane |
we discuss fermionic dark matter in non-supersymmetric e 6 grand unification. the fundamental representation of e 6 contains, in addition to the standard model fermions, exotic fermions and we argue that one of them is a viable, interesting dark matter candidate. its stability is guaranteed by a discrete remnant symmet... | dark matter in e 6 grand unification |
macroscopic dark matter (macros) is a broad class of alternative candidates to particle dark matter. these candidates would transfer energy to matter primarily through elastic scattering. a sufficiently large macro passing through the atmosphere would produce a straight channel of ionized plasma. if the cross section o... | straight lightning as a signature of macroscopic dark matter |
the vector u bosons, or so-called "dark photons," are one of the possible candidates for the dark matter mediators. they are supposed to interact with the standard matter via a "vector portal" due to the u (1 )-u (1 )'symmetry group mixing which might make them visible in particle and heavy-ion experiments. while there... | constraints on the kinetic mixing parameter ε2 for the light dark photons from dilepton production in heavy-ion collisions in the few-gev energy range |
tev-scale dark matter is well motivated by notions of naturalness as the new physics threshold is expected to emerge in the tev regime. we generalise the standard model by including an arbitrary su(2) multiplet of dark matter particles in non-chiral representation. the pseudo-real representations can be viable dm candi... | direct detection of electroweak dark matter |
we explore a class of simplified extensions to the standard model containing a complex singlet scalar as a dark matter candidate accompanied by a vector-like lepton as a mediator, both charged under a new z 3 symmetry. in its simplest form, the new physics couples only to right-handed electrons, and the model is able t... | z 3 scalar dark matter with strong positron fluxes |
oscillating scalar field condensates induce small amplitude oscillations of the hubble parameter which can induce a decay of the condensate due to a parametric resonance instability [1]. we show that this instability can lead to the decay of the coherence of the condensate of axion-like particle (alp) fields during the... | decay of alp condensates via gravitation-induced resonance |
in this paper we propose a possible explanation of the active neutrino majorana masses with the tev scale new physics which also provide a dark matter candidate. we extend the standard model (sm) with a local u(1) ‧ symmetry and introduce a seesaw relation for the vacuum expectation values (vevs) of the exotic scalar s... | the higgs seesaw induced neutrino masses and dark matter |
we propose a stimulated pulsed-radar collider to directly produce pseudo nambu-goldstone bosons as candidates for dark components in the universe and simultaneously induce the decay by mixing two radar beams. we have extended formulae for stimulated resonant photon-photon scattering in a quasi-parallel collision system... | stimulated radar collider for probing gravitationally weak coupling pseudo nambu-goldstone bosons |
we consider a u(1)' supersymmetric seesaw model in which a right-handed sneutrino is a thermal dark matter candidate whose relic density can be in the right range due to its coupling to relatively light , the superpartner of the extra gauge boson z '. such light can be produced at the lhc through cascade decays of colo... | lepton flavour violating signature in supersymmetric u(1)' seesaw models at the lhc |
dark matter particles, even if they are electrically neutral, could interact with the standard model particles via their electromagnetic multipole moments. in this paper, we focus on the electromagnetic properties of the complex vector dark matter candidate, which can be described by means of seven form factors. we cal... | direct detection of vector dark matter through electromagnetic multipoles |
an unified cosmological model for an universe filled with a mass dimension one (mdo) fermionic field plus the standard matter fields is considered. after a primordial quantum fluctuation the field slowly rolls down to the bottom of a symmetry breaking potential, driving the universe to an inflationary regime that incre... | an unified cosmological evolution driven by a mass dimension one fermionic field |
ultralight bosons are a proposed solution to outstanding problems in cosmology and particle physics: they provide a dark-matter candidate while potentially explaining the strong charge-parity problem. if they exist, ultralight bosons can interact with black holes through the superradiant instability. in this work we ex... | the imprint of superradiance on hierarchical black hole mergers |
searching for physics beyond the standard model is crucial for understanding the mystery of the universe, such as the dark matter. we utilized a single spin in a diamond as a sensor to explore the spin-dependent interactions mediated by the axion-like particles, which are well motivated by dark matter candidates. we re... | observation of a new interaction between a single spin and a moving mass |
in this essay, we show that quantum gravity and the spin-statistics theorem have very interesting consequences for dark matter candidates. quantum gravity can lead to fifth force type interactions that lead to a lower bound on the masses of bosonic candidates. in the case of fermions, the spin-statistics theorem leads ... | implications of quantum gravity for dark matter |
a diphoton excess with an invariant mass of about 750 gev has been recently reported by both atlas and cms experiments at lhc. while the simplest interpretation requires the resonant production of a 750 gev (pseudo)scalar, here we consider an alternative setup, with an additional heavy parent particle which decays into... | confronting dark matter with the diphoton excess from a parent resonance decay |
recent investigations have suggested that the six-quark combination u u d d s s could be a deeply bound state (s ) that has eluded detection so far, and a potential dark matter candidate. we report the first search for a stable, doubly strange six-quark state in ϒ →s λ ¯ λ ¯ decays based on a sample of 90 ×1 06ϒ (2 s )... | search for a stable six-quark state at babar |
light weakly interacting massive particles (wimps) are dark matter particle candidates with weak scale interaction with the known particles, and mass in the gev to tens of gev range. hints of light wimps have appeared in several dark matter searches in the last decade. the unprecedented possible coincidence into tantal... | light weakly interacting massive particles |
we study the experimental constraints on a model of a two-component dark matter, consisting of the qcd axion, and a scalar particle, both contributing to the dark matter relic abundance of the universe. the global peccei-quinn symmetry of the theory can be spontaneously broken down to a residual z2 symmetry, thereby id... | mixed wimp-axion dark matter |
general classical arguments on the time evolution of the phase-space density can be used to derive constraints on the mass of particle candidates for the cosmological dark matter (dm). the resulting tremaine-gunn limit is extremely useful in constraining particle dm models. in certain models, however, the dm particle m... | tremaine-gunn limit with mass-varying particles |
gerry brown was a godfather of our hidden local symmetry (hls) for the vector meson from the birth of the theory throughout his life. the hls is originated from very nature of the nonlinear realization of the symmetry g based on the manifold g/h, and thus is universal to any physics based on the nonlinear realization. ... | hidden local symmetry and beyond |
we propose an experimental search for an axion-induced oscillating electric dipole moment (oedm) for electrons using state-of-the-art alkali vapor-cell atomic magnetometers. the axion is a hypothesized new fundamental particle which can resolve the strong charge-parity problem and be a prominent dark matter candidate. ... | search for an axion-induced oscillating electric dipole moment for electrons using atomic magnetometers |
we perform a detailed study of dark matter production via freeze-in under the assumption that some fluid dominates the early universe before depositing its energy to the plasma causing entropy injection. as a dark matter candidate we consider a fermionic singlet that is produced through its interactions with a scalar p... | frozen-in fermionic singlet dark matter in non-standard cosmology with a decaying fluid |
dark photons and mirror matter are well-motivated dark matter candidates. it is possible that both of them arose during the compactification and symmetry breaking scenario of the heterotic e8 × e8 string theory and are related to each other. in this case, dark photons can become a natural portal into the mirror world. ... | dark photon portal into mirror world |
throughout cosmological simulations, the properties of the matter density field in the initial conditions have a decisive impact on the features of the structures formed today. in this paper we use a random-forest classification algorithm to infer whether or not dark matter particles, traced back to the initial conditi... | classification algorithms applied to structure formation simulations |
now that the fermilab muon $g-2$ experiment has released the results of its run-1 data, which agrees with the results of the brookhaven experiment, one can examine the potential of simple extensions to explain the combined $4.2\sigma$ discrepancy between the sm prediction and experiment. this proceeding examines a sing... | simple bsm explanations of a_\\mu in light of the fnal muon g-2 measurement |
we construct a model explaining dark matter, baryon asymmetry, and reheating in a quintessential inflation model. three generations of right-handed neutrinos having hierarchical masses and the light scalar field leading to the self-interaction of active neutrinos are introduced. the lightest sterile neutrino is a dark ... | generation of neutrino dark matter, baryon asymmetry, and radiation after quintessential inflation |
we discuss two models that extend the standard model by additional particles, leading to additional scalar states, and also providing dark matter candidates. we briefly review the current constraints and comment on production cross sections at present and future collider facilities. | the idm and thdma - current constraints and future prospects |
the kev scale sterile neutrino was a qualified candidate for dark matter particles in the dodelson-widrow mechanism. but the mixing angle, needed to provide enough amount of dark matter, is in contradiction with the astrophysical observations. to alleviate such tension, we introduce an effective interaction, i.e. ga(ϕ ... | axion-assisted resonance oscillation rescues the dodelson-widrow mechanism |
the lack of confirmation for the existence of supersymmetric particles and weakly interacting massive particles (wimps) appeals to extension of the field of studies of the physical nature of dark matter, involving nonsupersymmetric and non-wimp solutions. we briefly discuss some examples of such candidates in their rel... | cosmoparticle physics of dark matter |
the idea of reduction of couplings consists in searching for renormalization group invariant relations between parameters of a renormalizable theory that hold to all orders of perturbation theory. based on the principle of the reduction of couplings, one can construct finite unified theories which are supersymmetric gr... | updates and new results in models with reduced couplings |
we consider a framework where the standard model is augmented by a second s u (2 ) scalar doublet and by a real scalar singlet that, protected by a z2 symmetry, provides a particle dark matter candidate. we show that this setup allows for doubly blind spots at both collider searches for anomalies in the higgs invisible... | doubly blind spots in scalar dark matter models |
a unified dynamical model of dark energy and inflation is presented, in which both phenomena are driven by axion-like fields-quintessences-of spontaneously broken global $u(1)_a$'s symmetries whose potentials are induced by instantons of the qcd gauge group $su(3)_c$ for inflation and of a new strongly interacting gaug... | all in the family: the quintessential kinship between inflation and dark energy |
in 2005, dharam ahluwalia and daniel grumiller reported an unexpected theoretical discovery of mass dimension one fermions. these are an entirely new class of spin one half particles, and because of their mass dimensionality mismatch with the standard model fermions they are a first-principle dark matter candidate. wri... | mass dimension one fermions |
recent work [1,2], using an effective field theory framework, have shown the number of possible couplings between nucleons and the dark-matter-candidate weakly interacting massive particles (wimps) is larger than previously thought. inspired by an existing mathematica script that computes the target response [2], we ha... | dmscatter: a fast program for wimp-nucleus scattering |
in this work, we present a search for the possible production of dark matter particles at the large hadron collider alongside a new hypothetical neutral gauge boson denoted by z'. the topology of the studied events is dimuons plus large missing transverse momentum. the study is performed using the cms open data samples... | search for the production of dark matter candidates in association with heavy dimuon resonance using the cms open data for proton-proton collisions at √{s } = 8 tev |
axions provide a solution to the strong cp problem and are excellent dark matter candidates. the presence of additional sources of cp violation, for example to account for the matter/antimatter asymmetry of the universe, can lead to cp-violating interactions between axions and standard model fields. in case axions form... | cp-violating axion interactions ii: axions as dark matter |
the nature of dark matter remains one of the preeminent mysteries in physics and cosmology. it appears to require the existence of new particles whose interactions to ordinary matter are extraordinarily feeble. one well-motivated candidate is the axion, an extraordinarily light neutral particle that may possibly be det... | microwave cavities and detectors for axion research: proceedings of the 2nd international workshop |
among the prominent low-mass dark matter candidates is the qcd axion but also other light and weakly interacting particles beyond the standard model. we review briefly the case for such dark matter and give an overview on most recent experimental efforts within laboratory searches, where we focus on experiments exploit... | looking for dark matter on the light side |
a single crystal of na_2w_2o_7 (nwo) was grown by a low-thermal-gradient czochralski technique (ltg-cz). the scintillation properties of the crystal were evaluated for the first time as a potential material for dark matter search experiments. the luminescence and scintillation characteristics of the crystal were studie... | the na_2w_2o_7 crystal: a crystal scintillator for dark matter search experiment |
when dark matter candidate and its parent particles are nearly degenerate, it would be difficult to probe them at the large hadron collider directly. we propose to explore their quantum loop effects at the cepc through the golden channel process e+e- →μ+μ-. we use a renormalizable toy model consisting of a new scalar a... | probing dark particles indirectly at the cepc |
we study sterile neutrinos in an extension of the standard model, based on the gauge group s u(3) c ⊗ s u(3) l ⊗ s u(3) r ⊗ u(1) n , and use this model to illustrate how to apply cosmological limits to thermalized particles that decouple while relativistic. these neutrinos, na l , can be dark matter candidates, with a ... | cosmological bounds of sterile neutrinos in a s u(3) c ⊗ s u(3) l ⊗ s u(3) r ⊗ u(1) nmodel as dark matter candidates |
while the standard model of particle physics does not include free particles with fractional charge, experimental searches have not ruled out their existence. we report results from the cryogenic dark matter search (cdms ii) experiment that give the first direct-detection limits for cosmogenically produced relativistic... | first direct limits on lightly ionizing particles with electric charge less than e /6 |
we investigate an interesting correlation among dark matter phenomenology, neutrino mass generation and grand unified theory (gut) baryogenesis, based on the scotogenic model. the model contains additional right-handed neutrinos n and a second higgs doublet φ , both of which are odd under an imposed z2 symmetry. the ne... | scalar dark matter, gut baryogenesis, and radiative neutrino mass |
the minimal standard model of quarks and leptons is extended with a set of vectorlike fermions to allow baryon number b to become a gauged u(1)b symmetry. the b assignments of the new particles are determined by renormalizable interactions with the known quarks through a color triplet scalar diquark. the spontaneous br... | gauged baryon number and dibaryonic dark matter |
we propose a simple model in which dark matter particle exchanges mediate a new quantum force between muons and nucleons, resolving the proton charge radius puzzle. at the same time, the discrepancy between the measured anomalous magnetic moment of the muon and the standard model prediction can be accommodated, and the... | dark matter as a solution to muonic puzzles |
ground-based gravitational-wave interferometers could directly probe the existence of ultralight dark matter [o (10-14- 10-11) ev /c2 ] that couples to standard model particles in the detectors. recently, many techniques have been developed to extract a variety of potential dark-matter signals from noisy gravitational-... | distinguishing between dark-matter interactions with gravitational-wave detectors |
we propose a scenario where superheavy dark matter (dm) can be produced via symmetry restoration first-order phase transition during inflation triggered by the evolution of the inflaton field. the phase transition happens in a spectator sector coupled to the inflaton field. during the phase transition, the spectator fi... | superheavy dark matter production from a symmetry-restoring first-order phase transition during inflation |
we propose a general flavor-independent extension of the standard model (sm) with the minimal particle content, based on the symmetry s u (3) c×s u (2) l×u (1) y'×u (1) x×z2 . in this scenario, the charge operator is identified in terms of the charges of two u(1) gauge symmetries. the light neutrino masses are generate... | flipped u(1) extended standard model and majorana dark matter |
we consider the possibility of using dark matter particle's mass and its interaction cross section as a smoking gun signal of the existence of a big bounce at the early stage in the evolution of our currently observed universe. a study of dark matter production in the pre-bounce contraction and the post bounce expansio... | direct dark matter searches-test of the big bounce cosmology |
we propose that dark matter is not yet another new particle in nature, but that it is a remnant of quantum gravitational effects on known fields. we arrive at this possibility in an indirect and surprising manner: by considering retarded, nonlocal, and lorentzian evolution for quantum fields. this is inspired by recent... | dark matter from spacetime nonlocality |
in the present work we study the process of particle creation for mass dimension one fermionic fields (sometimes named elko) as a consequence of expansion of the universe. we study the effect driven by an expanding background that is asymptotically minkowski in the past and future. the differential equation that govern... | creation of mass dimension one fermionic particles in asymptotically expanding universe |
dark matter (dm) capture in stars offers a rich phenomenology that makes it possible to probe a wide variety of particle dm scenarios in diverse astrophysical environments. in spite of decades of improvements to refine predictions of capture-related observables and better quantify astrophysical and particle-physics unc... | towards a more rigorous treatment of uncertainties on the velocity distribution of dark matter particles for capture in stars |
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... | euso-spb2 sensitivity to macroscopic dark matter |
about 40 years ago, since no viable candidate for "dark matter" was discovered, m. milgrom and j.bekenstein introduced a non-covariant modification of gravitational theory (mond) to account for the anomalous rotation curves of galaxies. bekenstein and sanders then developed a relativistically covariant form of the theo... | n ≥ 2 particles in the framework of teves |
production of massive stable relics in r2-modified gravity is considered. it is shown that the cosmological evolution and kinetics of massive species differs significantly from those in the conventional cosmology. the results are applied to the lightest supersymmetric particles and it is argued that they are viable can... | dark matter in r+r2 cosmology |
in this paper, we propose a novel model of scalar field fuzzy dark matter based on stueckelberg theory. dark matter is treated as a bose-einstein condensate of stueckelberg particles and the resulting cosmological effects are analyzed. fits are understood for the density and halo sizes of such particles and comparison ... | stueckelberg bosons as ultralight dark matter candidate |
a large set of independent astronomical observations have provided a strong evidence for nonbaryonic dark matter in the universe. one of the most investigated candidates is an unknown long-lived weakly interacting massive particle (wimp) which was in thermal equilibrium with the primeval plasma. here we investigate the... | gravitationally induced particle production and its impact on the wimp abundance |
we consider the standard model with a new particle which is charged under su (2)l with the hypercharge being zero. such a particle is known as one of the dark matter (dm) candidates. we examine the realization of the multiple point criticality principle (mpp) in this class of models. namely, we investigate whether the ... | vanishing higgs potential in minimal dark matter models |
despite the multiple and convincing evidence of the existence of dark matter (dm) in our universe, its detection is one of the most pressing questions in particle physics. as of today, there is no unambiguous hint which could clarify the particle nature of dm. for these reasons, a huge experimental effort is ongoing, t... | operation of a diamond cryogenic detector for low-mass dark matter searches |
cosmology and astroparticle physics give strongest possible evidence for the incompleteness of the standard model of particle physics. leaving aside misterious dark energy, which may or may not be just the cosmological constant, two properties of the universe cannot be explained by the standard model: dark matter and m... | cosmology and dark matter |
we analyze the rotation curves that correspond to a bose-einstein condensate (bec)-type halo surrounding a schwarzschild-type black hole to confront predictions of the model upon observations of galaxy rotation curves. we model the halo as a bec in terms of a massive scalar field that satisfies a klein-gordon equation ... | is a bose-einstein condensate a good candidate for dark matter? a test with galaxy rotation curves |
we investigate the phenomenology of a non-thermal dark matter (dm) candidate in the context of flavor models that explain the hierarchy in the masses and mixings of quarks and leptons via the froggatt-nielsen (fn) mechanism. a flavor-dependent u(1)fn symmetry explains the fermion mass and mixing hierarchy, and also pro... | fimp dark matter from flavon portals |
motivated by grand unification considerations, we analyse a simple extension of the minimal supersymmetric standard model with additional pairs of vector-like chiral supermultiplets. we focus on the so-called lnd setup, which enlarges the particle content of the minimal model by two vector-like pairs of weak doublets (... | dark matter and collider signals in an mssm extension with vector-like multiplets |
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