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we introduce a dark neutrino sector which respects a hidden u (1 )' gauge symmetry, subsequently broken by the vacuum expectation value of a dark scalar. the model is a self-consistent realization of an extended hidden sector that communicates with the standard model only via the three renormalizable portals, namely, n... | dark neutrinos and a three-portal connection to the standard model |
we explore the possibility that dark matter interactions with standard model particles are dominated by interactions with neutrinos. we examine whether it is possible to construct such a scenario in a gauge invariant manner. we first study the coupling of dark matter to the full lepton doublet and confirm that this gen... | neutrino portals to dark matter |
the electroweak (ew) sector of the minimal supersymmetric standard model (mssm), with the lightest neutralino as dark matter (dm) candidate, can account for a variety of experimental data. this includes the dm content of the universe, dm direct detection limits, ew susy searches at the lhc and in particular the so far ... | the new "muon g-2" result and supersymmetry |
we propose a novel strategy to search for new physics in timing spectra at low-energy neutrino experiments using a pulsed beam, envisioning the situation in which a new particle comes from the decay of its heavier partner with a finite particle width. the timing distribution of events induced by the dark matter (dm) ca... | dark matter signals from timing spectra at neutrino experiments |
the fnal+bnl measurements for muon g -2 is 4.2 σ above the sm prediction, and the berkeley 133cs measurement for the fine-structure constant αem leads to the sm prediction for electron g -2 which is 2.4 σ above the experimental value. hence, a joint explanation of both anomalies requires a positive contribution to muon... | can electron and muon g -2 anomalies be jointly explained in susy? |
we introduce a minimal simplified dark matter (msdm) framework to quantitatively characterise dark matter (dm) searches at the lhc. we study two msdm models where the dm is a dirac fermion which interacts with a vector and axial-vector mediator. the models are characterised by four parameters: m dm , m med , g dm and g... | characterising dark matter searches at colliders and direct detection experiments: vector mediators |
understanding microscopic processes in materials and devices that can be switched by light requires experimental access to dynamics on nanometer length and femtosecond time scales. here, we introduce ultrafast dark-field electron microscopy to map the order parameter across a structural phase transition. we use ultrash... | ultrafast nanoimaging of the order parameter in a structural phase transition |
in integrated photonics, specific wavelengths such as 1,550 nm are preferred due to low-loss transmission and the availability of optical gain in this spectral region. for chip-based photodetectors, two-dimensional materials bear scientifically and technologically relevant properties such as electrostatic tunability an... | strain-engineered high-responsivity mote2 photodetector for silicon photonic integrated circuits |
since the realization of bose-einstein condensates (becs) trapped in optical potentials, intensive experimental and theoretical investigations have been carried out for bright and dark matter-wave solitons, coherent structures, modulational instability (mi), and nonlinear excitation of bec matter waves, making them obj... | spatiotemporal engineering of matter-wave solitons in bose-einstein condensates |
in the last decades, the standard model (sm) of particle physics has been extensively tested and confirmed, with the announced discovery of the higgs boson in 2012 being the last missing puzzle piece. even though since then the search for new particles and interactions has been further intensified, the experiments atla... | accumulating evidence for the associated production of a new higgs boson at the lhc |
the cdf-ii collaboration’s recent high-precision measurement of w-boson mass indicates new physics contribution(s) beyond the standard model. we investigate the possibility of the well-known canonical scotogenic model to explain the cdf-ii measurement. the scotogenic model is a popular scenario beyond the standard mode... | cdf-ii w-boson mass anomaly in the canonical scotogenic neutrino-dark matter model |
we formulate $f(q,c)$ gravity and cosmology. such a construction is based on the symmetric teleparallel geometry, but apart form the non-metricity scalar $q$ we incorporate in the lagrangian the boundary term $c$ of its difference form the standard levi-civita ricci scalar $\mathring r$. we extract the general metric a... | non-metricity with bounday terms: $f(q,c)$ gravity and cosmology |
many extensions of the standard model predict the production of dark matter particles at the lhc. sufficiently light dark matter particles may be produced in decays of the higgs boson that would appear invisible to the detector. this letter presents a statistical combination of searches for h $\rightarrow$ invisible de... | combination of searches for invisible decays of the higgs boson using 139 fb$^{-1}$ of proton-proton collision data at $\\sqrt{s} = 13$ tev collected with the atlas experiment |
the muon g-2 experiment at fermilab has confirmed the muon anomalous magnetic moment anomaly, with an error bar 15% smaller and a different central value compared with the previous brookhaven result. the combined results from fermilab and brookhaven show a difference with theory at a significance of 4.2σ, strongly indi... | a 2hdm for the g-2 and dark matter |
we propose a model with radiatively induced neutrino mass at two-loop level, applying modular $a_4$ symmetry. the neutrino mass matrix is formulated where the structure of associated couplings are restricted by the symmetry. then we show several predictions in the lepton sector, satisfying lepton flavor violations as w... | a two loop induced neutrino mass model with modular $a_4$ symmetry |
nonradiating sources are nontrivial charge-current distributions that do not generate fields outside the source domain. the pursuit of their possible existence has fascinated several generations of physicists and triggered developments in various branches of science ranging from medical imaging to dark matter. recently... | nonradiating anapole states in nanophotonics: from fundamentals to applications |
we present a singly charged scalar extension of the scotogenic model, the scotogenic-zee model, which resolves the recently reported deviations in the w boson mass as well as lepton g -2 . the model admits a scalar or a fermionic dark matter while realizing naturally small radiative neutrino masses. the mass splitting ... | w boson mass shift, dark matter, and (g -2 )ℓ in a scotogenic-zee model |
after completion of lhc run 2, the atlas and cms experiments had collected of order 139 fb-1 of data at √s = 13 tev. while discovering a very standard model-like higgs boson of mass mh ≃ 125 gev, no solid signal for physics beyond the standard model has emerged so far at lhc. in addition, no wimp signals have emerged s... | status of weak scale supersymmetry after lhc run 2 and ton-scale noble liquid wimp searches |
we investigate the physics case for a dedicated trigger on a low mass, hadronic displaced vertex at the high luminosity lhc, relying on the cms phase ii track trigger. we estimate the trigger efficiency with a simplified simulation of the cms track trigger and show that the l1 trigger rate from fake vertices, b meson d... | probing naturally light singlets with a displaced vertex trigger |
we study the interactions between strongly interacting massive particle dark matter and the standard model via a massive vector boson that is kinetically mixed with the hypercharge gauge boson. the relic abundance is set by 3 → 2 self-interactions of the dark matter, while the interactions with the vector mediator enab... | simp spectroscopy |
the focus of dark matter searches to date has been on weakly interacting massive particles (wimps) in the gev/$c^2$-tev/$c^2$ mass range. the direct, indirect and collider searches in this mass range have been extensive but ultimately unsuccessful, providing a strong motivation for widening the search outside this rang... | quest-dmc superfluid $^3$he detector for sub-gev dark matter |
in this letter, we consider a class of scenarios in which the dark matter is part of a heavy hidden sector that is thermally decoupled from the standard model in the early universe. the dark matter freezes-out by annihilating to a lighter, metastable state, whose subsequent abundance can naturally come to dominate the ... | pev-scale dark matter as a thermal relic of a decoupled sector |
we describe the first implementation of a josephson traveling wave parametric amplifier (jtwpa) in an axion dark matter search. the operation of the jtwpa for a period of about two weeks achieved sensitivity to axion-like particle dark matter with axion-photon couplings above 10-13 ge v-1 over a narrow range of axion m... | dark matter axion search using a josephson traveling wave parametric amplifier |
the asymptotic-safety paradigm posits that the symmetry of quantum theories of gravity and matter is enhanced to quantum scale symmetry, i.e., scale symmetry in the presence of quantum fluctuations, at very high energies. to achieve such a symmetry enhancement, the effect of quantum fluctuations must balance out. it is... | asymptotic safety of gravity with matter |
the relation between halo mass, m, and concentration, c, is a critical component in our understanding of the structure of dark matter halos. while numerous models for this relation have been proposed, almost none of them attempt to derive the evolution of the relation analytically. we build on previous efforts to model... | an accurate physical model for halo concentrations |
dark matter particles can be observably produced at intensity-frontier experiments, and opportunities in the next decade will explore important parameter space motivated by thermal dm models, the dark sector paradigm, and anomalies in data. this whitepaper describes the motivations, detection strategies, prospects and ... | a snowmass whitepaper: dark matter production at intensity-frontier experiments |
the field of particle physics is in a peculiar state. the standard model of particle theory successfully describes every fundamental particle and force observed in laboratories, yet fails to explain properties of the universe such as the existence of dark matter, the amount of dark energy, and the preponderance of matt... | probing the frontiers of particle physics with tabletop-scale experiments |
we consider a simple higgs portal dark-matter model, where the standard model is supplemented with a complex scalar whose imaginary part plays the role of weakly interacting massive particle dark matter (dm). we show that the direct dm detection cross section vanishes at the tree level and zero momentum transfer due to... | cancellation mechanism for dark-matter-nucleon interaction |
we present the measurement of the hubble constant, h0, with three strong gravitational lens systems. we describe a blind analysis of both pg 1115+080 and he 0435-1223 as well as an extension of our previous analysis of rxj 1131-1231. for each lens, we combine new adaptive optics (ao) imaging from the keck telescope, ob... | a sharp view of h0licow: h0 from three time-delay gravitational lens systems with adaptive optics imaging |
we use the framework of asymptotic safety above the planck scale to constrain the parameter space of simple models of new physics that can accommodate the measured value of the anomalous magnetic moment of the muon and the relic density of dark matter. we couple parametrically to the trans-planckian quantum physics a s... | minimal models for g -2 and dark matter confront asymptotic safety |
the only coupling dark matter is guaranteed to have with the standard model is through gravity. here we propose a concept for direct dark matter detection using only this gravitational coupling. we suggest that an array of quantum-limited mechanical impulse sensors may be capable of detecting the correlated gravitation... | proposal for gravitational direct detection of dark matter |
we analyze the prospects for detection of light sub-gev dark matter produced in experiments designed to study the properties of neutrinos, such as miniboone, t2k, ship, dune etc. we present an improved production model, when dark matter couples to hadronic states via a dark photon or baryonic vector mediator, incorpora... | light dark matter in neutrino beams: production modeling and scattering signatures at miniboone, t2k, and ship |
we point out that production of new bosons by charged meson decays can greatly enhance the sensitivity of beam-focused accelerator-based experiments to new physics signals. this enhancement arises since the charged mesons are focused and their three-body decays do not suffer from helicity suppression in the same way as... | solutions to the miniboone anomaly from new physics in charged meson decays |
the chinese space station optical survey (css-os) is a planned full sky survey operated by the chinese space station telescope (csst). it can simultaneously perform the photometric imaging and spectroscopic slitless surveys, and will probe weak and strong gravitational lensing, galaxy clustering, individual galaxies an... | cosmology from the chinese space station optical survey (css-os) |
we propose a novel experiment to search for axion dark matter that differentiates the phase velocities of the left- and right-handed polarized photons. our optical cavity measures the difference of the resonant frequencies between two circular polarizations of the laser beam. the design of our cavity adopts a double-pa... | optical ring cavity search for axion dark matter |
we use a suite of cosmological simulations to study the mass-concentration-redshift relation, c(m, z), of dark matter haloes. our simulations include standard λ-cold dark matter (cdm) models, and additional runs with truncated power spectra, consistent with a thermal warm dark matter (wdm) scenario. we find that the ma... | the mass-concentration-redshift relation of cold and warm dark matter haloes |
we present foreground-reduced cosmic microwave background (cmb) maps derived from the full planck data set in both temperature and polarization. compared to the corresponding planck 2013 temperature sky maps, the total data volume is larger by a factor of 3.2 for frequencies between 30 and 70 ghz, and by 1.9 for freque... | planck 2015 results. ix. diffuse component separation: cmb maps |
we probe photoinduced loss for chemically stable bosonic na 23 rb 87 and na 23 k 39 molecules in chopped optical dipole traps, where the molecules spend a significant time in the dark. we expect the effective two-body decay to be significantly suppressed due to the small expected complex lifetimes of about 13 and 6 μ s... | probing photoinduced two-body loss of ultracold nonreactive bosonic na 23 rb 87 and na 23 k 39 molecules |
searches for supersymmetric electroweakinos have entered a crucial phase, as the integrated luminosity of the large hadron collider is now high enough to compensate for their weak production cross-sections. working in a framework where the neutralinos and charginos are the only light sparticles in the minimal supersymm... | combined collider constraints on neutralinos and charginos |
a search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb-1 of pp collisions at √{s}=13 tev recorded by the atlas detector at the large hadron collider is reported. no significant excess is found and limits are set on ... | search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √{s}=13 tev with the atlas detector |
in dimension-less theories of dynamical generation of the weak scale, the universe can undergo a period of low-scale inflation during which all particles are massless and undergo super-cooling. this leads to a new mechanism of generation of the cosmological dark matter relic density: super-cooling can easily suppress t... | super-cool dark matter |
an axion dark matter search with the capp-8tb haloscope is reported. our results are sensitive to axion-photon coupling ga γ γ down to the qcd axion band over the axion mass range between 6.62 and 6.82 μ ev at a 90% confidence level, which is the most sensitive result in the mass range to date. | axion dark matter search around 6.7 μ ev |
thermal dark matter models with particle χ masses below the electroweak scale can provide an explanation for the observed relic dark matter density. this would imply the existence of a new feeble interaction between the dark and ordinary matter. we report on a new search for the sub-gev χ production through the interac... | search for light dark matter with na64 at cern |
we propose to achieve the proof-of-principle of the ptolemy project to directly detect the cosmic neutrino background (cnb). each of the technological challenges described in [1,2] will be targeted and hopefully solved by the use of the latest experimental developments and profiting from the low background environment ... | ptolemy: a proposal for thermal relic detection of massive neutrinos and directional detection of mev dark matter |
new light particles may be produced in large numbers in the far-forward region at the lhc and then decay to dark matter, which can be detected through its scattering in far-forward experiments. we consider the example of invisibly decaying dark photons, which decay to dark matter through a'→χ χ . the dark matter may th... | detecting dark matter with far-forward emulsion and liquid argon detectors at the lhc |
we report the results of a systematic search for ultra-faint milky way satellite galaxies using data from the dark energy survey (des) and pan-starrs1 (ps1). together, des and ps1 provide multi-band photometry in optical/near-infrared wavelengths over ∼80% of the sky. our search for satellite galaxies targets ∼25,000 d... | milky way satellite census. i. the observational selection function for milky way satellites in des y3 and pan-starrs dr1 |
the miniboone-dm collaboration searched for vector-boson mediated production of dark matter using the fermilab 8-gev booster proton beam in a dedicated run with 1.86 ×1 020 protons delivered to a steel beam dump. the miniboone detector, 490 m downstream, is sensitive to dark matter via elastic scattering with nucleons ... | dark matter search in a proton beam dump with miniboone |
the results of a search for direct pair production of top squarks and for dark matter in events with two opposite-charge leptons (electrons or muons), jets and missing transverse momentum are reported, using 139 fb−1 of integrated luminosity from proton-proton collisions at √{s } = 13 tev, collected by the atlas detect... | search for new phenomena in events with two opposite-charge leptons, jets and missing transverse momentum in pp collisions at √{s } = 13 tev with the atlas detector |
we present a new method to characterize unresolved point sources (pss) generalizing traditional template fits to account for non-poissonian photon statistics. we apply this method to fermi large area telescope γ -ray data to characterize ps populations at high latitudes and in the inner galaxy. we find that pss (resolv... | evidence for unresolved γ -ray point sources in the inner galaxy |
we estimate the maximum direct detection cross section for sub-gev dark matter (dm) scattering off nucleons. for dm masses in the range $10 \text{ kev }- 100 \text{ mev}$, cross sections greater than $10^{-36}$- $10^{-30} \,\text{cm}^2$ seem implausible. we present a dm candidate which realizes this maximum cross secti... | maximizing direct detection with highly interactive particle relic dark matter |
we study a new class of renormalisable simplified models for dark matter searches at the lhc that are based on two higgs doublet models with an additional pseudoscalar mediator. in contrast to the spin-0 simplified models employed in analyses of run i data these models are self-consistent, unitary and bounds from higgs... | simplified dark matter models with two higgs doublets: i. pseudoscalar mediators |
motivated by the growing evidence for lepton flavour universality violation after the first results from fermilab's muon (g - 2) measurement, we revisit one of the most widely studied anomaly free extensions of the standard model namely, gauged lμ -lτ model, known to be providing a natural explanation for muon (g - 2).... | muon (g - 2) and xenon1t excess with boosted dark matter in lμ - lτ model |
searches for dark matter-induced recoils have made impressive advances in the last few years. yet the field is confronted by several outstanding problems. first, the inevitable background of solar neutrinos will soon inhibit the conclusive identification of many dark matter models. second, and more fundamentally, curre... | directional recoil detection |
new singlet scalar bosons have broad phenomenological utility and feature prominently in many extensions of the standard model. such scalars are often taken to have higgs-like couplings to sm fermions in order to evade stringent flavor bounds, e.g., by assuming minimal flavor violation (mfv), which leads to a rather ch... | flavor-specific scalar mediators |
we perform a low-mass dark matter search using an exposure of 30 kg ×yr with the xenon100 detector. by dropping the requirement of a scintillation signal and using only the ionization signal to determine the interaction energy, we lowered the energy threshold for detection to 0.7 kev for nuclear recoils. no dark matter... | low-mass dark matter search using ionization signals in xenon100 |
we propose an approach to search for axion dark matter with a specially designed superconducting radio frequency cavity, targeting axions with masses ma ≲ 10-6 ev. our approach exploits axion-induced transitions between nearly degenerate resonant modes of frequency ∼ ghz. a scan over axion mass is achieved by varying t... | axion dark matter detection by superconducting resonant frequency conversion |
we conduct frequency comparisons between a state-of-the-art strontium optical lattice clock, a cryogenic crystalline silicon cavity, and a hydrogen maser to set new bounds on the coupling of ultralight dark matter to standard model particles and fields in the mass range of 10-16-10-21 ev . the key advantage of this two... | precision metrology meets cosmology: improved constraints on ultralight dark matter from atom-cavity frequency comparisons |
the current most stringent constraints for the existence of sub-gev dark matter coupling to standard model via a massive vector boson a' were set by the na64 experiment for the mass region ma'≲250 mev , by analyzing data from the interaction of 2.84 ×1011 100-gev electrons with an active thick target and searching for ... | improved exclusion limit for light dark matter from e+e- annihilation in na64 |
the sub-electron-noise skipper ccd experimental instrument (sensei) uses the recently developed skipper-ccd technology to search for electron recoils from the interaction of sub-gev dark matter particles with electrons in silicon. we report first results from a prototype sensei detector, which collected 0.019 g day of ... | sensei: first direct-detection constraints on sub-gev dark matter from a surface run |
the oscura experiment will lead the search for low-mass dark matter particles using a very large array of novel silicon charge coupled devices (ccds) with a threshold of two electrons and with a total exposure of 30 kg-yr. the r&d effort, which began in fy20, is currently entering the design phase with the goal of ... | the oscura experiment |
string theory has been claimed to give rise to natural fuzzy dark matter candidates in the form of ultralight axions. in this paper we revisit this claim by a detailed study of how moduli stabilisation affects the masses and decay constants of different axion fields which arise in type iib flux compactifications. we fi... | fuzzy dark matter candidates from string theory |
in this paper, we describe the potential of the lhcb experiment to detect stealth physics. this refers to dynamics beyond the standard model that would elude searches that focus on energetic objects or precision measurements of known processes. stealth signatures include long-lived particles and light resonances that a... | unleashing the full power of lhcb to probe stealth new physics |
we constrain cosmological parameters and galaxy-bias parameters using the combination of galaxy clustering and galaxy-galaxy lensing measurements from the dark energy survey (des) year-3 data. we describe our modeling framework and choice of scales analyzed, validating their robustness to theoretical uncertainties in s... | dark energy survey year 3 results: constraints on cosmological parameters and galaxy-bias models from galaxy clustering and galaxy-galaxy lensing using the redmagic sample |
long-lived light particles (lllps) appear in many extensions of the standard model. lllps are usually motivated by the observed small neutrino masses, by dark matter or both. typical examples for fermionic lllps (a.k.a. heavy neutral fermions, hnfs) are sterile neutrinos or the lightest neutralino in r-parity violating... | heavy neutral fermions at the high-luminosity lhc |
we summarize the recent progress of the axion longitudinal plasma haloscope (alpha) consortium, a new experimental collaboration to build a plasma haloscope to search for axions and dark photons. the plasma haloscope is a novel method for the detection of the resonant conversion of light dark matter to photons. alpha w... | searching for dark matter with plasma haloscopes |
single-photon detection with high efficiency, high time resolution, low dark counts, and high photon detection rates is crucial for a wide range of optical measurements. although efficient detectors have been reported before, combining all performance parameters in a single device remains a challenge. here, we show a b... | single-photon detectors combining high efficiency, high detection rates, and ultra-high timing resolution |
phantom dark energy (w <-1 ) can produce amplified cosmic acceleration at late times, thus increasing the value of h0 favored by cmb data and releasing the tension with local measurements of h0. we show that the best fit value of h0 in the context of the cmb power spectrum is degenerate with a constant equation-of-s... | h0 tension, phantom dark energy, and cosmological parameter degeneracies |
we consider the scotogenic model, where the standard model (sm) is extended by a scalar doublet and three z2 odd sm-singlet fermions (ni, i =1 , 2, 3), all odd under an additional z2 symmetry, as a unifying framework for simultaneous explanation of inflation, dark matter, baryogenesis and neutrino mass. the inert doubl... | tev scale leptogenesis, inflaton dark matter, and neutrino mass in a scotogenic model |
dark matter elastic scattering off nuclei can result in the excitation and ionization of the recoiling atom through the so-called migdal effect. the energy deposition from the ionization electron adds to the energy deposited by the recoiling nuclear system and allows for the detection of interactions of sub-gev/c$^2$ m... | search for dark matter-nucleon interactions via migdal effect with darkside-50 |
we report on the search for dark matter wimps in the mass range below 10 gev/c$^2$, from the analysis of the entire dataset acquired with a low-radioactivity argon target by the darkside-50 experiment at lngs. the new analysis benefits from more accurate calibration of the detector response, improved background model, ... | search for low-mass dark matter wimps with 12 ton-day exposure of darkside-50 |
the recent high precision measurement of $w$ boson mass by cdf-ii collaboration points to the contribution(s) of new physics beyond the standard model. one of the minimalistic ways to account for the anomalous $w$ boson mass is by introducing a hyperchargeless real $su(2)_l$ triplet scalar whose vacuum expectation valu... | w boson mass in singlet-triplet scotogenic dark matter model |
the annihilation of dark matter into neutrinos over a range of dark matter masses from mev /c2 to zev /c2 is reviewed. thermally produced models of dark matter are expected to self-annihilate to standard model products. as no such signal has yet been detected, neutrino detectors are turned to in order to constrain the ... | dark matter annihilation to neutrinos |
lasing at the nanometre scale promises strong light-matter interactions and ultrafast operation. plasmonic resonances supported by metallic nanoparticles have extremely small mode volumes and high field enhancements, making them an ideal platform for studying nanoscale lasing. at visible frequencies, however, the appli... | lasing in dark and bright modes of a finite-sized plasmonic lattice |
we argue that the diphoton excess recently reported by atlas and cms can be explained, along with several anomalies seen in the flavor sector, in models where a standard model singlet scalar resonance with mass ms≈750 gev is produced in gluon fusion via loops containing a scalar color-triplet leptoquark ϕ . for a lepto... | flavor anomalies, the 750 gev diphoton excess, and a dark matter candidate |
in the context of a nonuniversal and anomaly free u(1)x extension of the standard model, we examine the decay of a 750 gev scalar singlet state, ξχ, as a possible explanation of the observed diphoton excess announced by the atlas and cms collaborations at cern-lhc collider. the one-loop decay to photons is allowed thro... | diphoton decay for a 750 gev scalar boson in a u(1)x model |
automated tools for the computation of particle physics' processes have become the backbone of phenomenological studies beyond the standard model. here, we present maddm v3.2. this release enables the fully automated computation of loop-induced dark-matter annihilation processes, relevant for indirect detection observa... | indirect dark-matter detection with maddm v3.2 - lines and loops |
dark matter particles may interact with other dark matter particles via a new force mediated by a dark photon, a', which would be the dark-sector analog to the ordinary photon of electromagnetism. the dark photon can obtain a highly suppressed mixing-induced coupling to the electromagnetic current, providing a portal t... | searches for dark photons at accelerators |
we present the explicit construction of the effective field theory (eft) of standard model mass eigenstates. the eft, which is invariant under u(1)e.m.× su(3)c, is constructed based on the on-shell method and young tableau technique. this eft serves as a new formulation of the higgs eft (heft), which can describe the i... | the new formulation of higgs effective field theory |
a reheating phase in the early universe is an essential part of all inflationary models during which not only the standard model (sm) quanta are produced but it can also shed light on the production of dark matter. in this work, we explore a class of reheating models where the reheating is induced by a cubic interactio... | higgs boson induced reheating and ultraviolet frozen-in dark matter |
advances in experimental techniques make it possible to map the high redshift universe in three dimensions at high fidelity in the near future. this will increase the observed volume by many-fold, while providing unprecedented access to very large scales, which hold key information about primordial physics. recently de... | snowmass2021 cosmic frontier white paper: cosmology and fundamental physics from the three-dimensional large scale structure |
the "codazzi formulation", based on a codazzi tensor, provides a more robust and straightforward theoretical framework for "cotton gravity" (cg) than its original formulation in terms of the cotton tensor. using this formulation we provide a self-consistent procedure to generate non-trivial exact solutions in cg that g... | exact solutions of cotton gravity in its codazzi formulation |
theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the standard model as well as motivated parameter space that can be probed by various experiments and observations. in this white paper, we review particle physics... | early-universe model building |
an excess in the branching fraction for $b^+ \to k^+ \nu\nu$ recently measured at belle ii may be a hint of new physics. we perform thorough likelihood analyses for different new physics scenarios such as $b \to kx$ with a new invisible particle $x$, or $b\to k\chi\chi$ through a scalar, vector, or tensor current with ... | decoding the $b \\to k \\nu \\nu$ excess at belle ii: kinematics, operators, and masses |
the recent reported 750 gev diphoton excess at the 13 tev lhc is explained in the framework of effective field theory assuming the diphoton resonance is a scalar (pseudoscalar) particle. it is found that the large production rate and the broad width of this resonance are hard to be simultaneously explained if only visi... | the 750 gev diphoton excess at the lhc and dark matter constraints |
we propose a simplified model to study the possible new heavy diphoton resonance from the cascade decay of a heavier particle at colliders, which may be related to dark matter or other new physics beyond the standard model. model-independent constraints and predictions on the allowed couplings for generating the observ... | diphoton and dark matter from cascade decay |
a search is presented for new high-mass resonances decaying into electron or muon pairs. the search uses proton-proton collision data at a centre-of-mass energy of 13 tev collected by the cms experiment at the lhc in 2016, corresponding to an integrated luminosity of 36 fb-1. observations are in agreement with standard... | search for high-mass resonances in dilepton final states in proton-proton collisions at √{s}=13 tev |
a 750 gev resonance has been observed at the run 2 lhc in the diphoton channel. in this paper, we explain this resonance as a c p -even scalar s that triggers the spontaneous breaking of local u (1 )b or u (1 )b+l gauge symmetries. s couples to gluon and photon pairs at the one-loop level, where particles running in th... | symmetries behind the 750 gev diphoton excess |
in light of very recent e989 experimental result, we investigate the possibility that heavy sparticles explain the muon g - 2 anomaly. we focus on the bino-smuon loop in an effective susy scenario, where a light gravitino plays the role of dark matter and other sparticles are heavy. due to the enhancement of left-right... | heavy bino and slepton for muon g - 2 anomaly |
the scattering of cosmic microwave background (cmb) photons off the free-electron gas in galaxies and clusters leaves detectable imprints on high resolution cmb maps: the thermal and kinematic sunyaev-zel'dovich effects (tsz and ksz respectively). we use combined microwave maps from the atacama cosmology telescope dr5 ... | atacama cosmology telescope: combined kinematic and thermal sunyaev-zel'dovich measurements from boss cmass and lowz halos |
tungsten-based monolayer transition metal dichalcogenides host a long-lived "dark" exciton, an electron-hole pair in a spin-triplet configuration. the long lifetime and unique spin properties of the dark exciton provide exciting opportunities to explore light-matter interactions beyond electric dipole transitions. here... | emerging photoluminescence from the dark-exciton phonon replica in monolayer wse2 |
dirac materials, because of their small o (mev ) band gap, are a promising target for dark photon-mediated scattering and absorption of light dark matter. in this paper, we characterize the daily modulation rate of dark matter interacting with a dirac material due to anisotropies in their crystal structure. we show tha... | directional dark matter detection in anisotropic dirac materials |
we propose simple freeze-in models where the observed dark matter abundance is explained via the decay of an electrically charged and/or coloured parent particle into feebly interacting massive particles (fimp). the parent particle is long-lived and yields a wide variety of lhc signatures depending on its lifetime and ... | lhc-friendly minimal freeze-in models |
we analyze the theoretical and phenomenological considerations for the electroweak phase transition and dark matter in an extension of the standard model with a complex scalar singlet (cxsm). in contrast with earlier studies, we use a renormalization group improved scalar potential and treat its thermal history in a ga... | standard model with a complex scalar singlet: cosmological implications and theoretical considerations |
new data are reported from a second run of the 2-liter pico-2l c3 f8 bubble chamber with a total exposure of 129 kg-days at a thermodynamic threshold energy of 3.3 kev. these data show that measures taken to control particulate contamination in the superheated fluid resulted in the absence of the anomalous background e... | improved dark matter search results from pico-2l run 2 |
various fundamental-physics experiments such as measurement of the magnetic birefringence of the vacuum, searches for ultralight dark-matter particles (e.g., axions), and precision spectroscopy of complex systems (including exotic atoms containing antimatter constituents) are enabled by high-field magnets. we give an o... | high magnetic fields for fundamental physics |
in recent years, evidence for lepton flavor universality violation beyond the standard model has been accumulated. in this context, a singly charged s u (2 )l singlet scalar (ϕ±) is very interesting, as it can only have flavor off-diagonal couplings to neutrinos and charged leptons therefore necessarily violating lepto... | searching for lepton flavor universality violation and collider signals from a singly charged scalar singlet |
we discuss models of ultralight scalar dark matter (dm) with linear and quadratic couplings to the standard model (sm). in addition to studying the phenomenology of linear and quadratic interactions separately, we examine their interplay. we review the different experiments that can probe such interactions and present ... | the phenomenology of quadratically coupled ultra light dark matter |
we propose a new low-threshold direct-detection concept for dark matter and for coherent nuclear scattering of solar neutrinos, based on the dissociation of atoms and subsequent creation of color center type defects within a lattice. the novelty in our approach lies in its ability to detect single defects in a macrosco... | direct detection of light dark matter and solar neutrinos via color center production in crystals |
the population of milky way (mw) satellites contains the faintest known galaxies and thus provides essential insight into galaxy formation and dark matter microphysics. here we combine a model of the galaxy-halo connection with newly derived observational selection functions based on searches for satellites in photomet... | milky way satellite census. ii. galaxy-halo connection constraints including the impact of the large magellanic cloud |
we study the seven-dimensional minimal supersymmetric standard model (mssm7) with the new gambit software framework, with all parameters defined at the weak scale. our analysis significantly extends previous weak-scale, phenomenological mssm fits, by adding more and newer experimental analyses, improving the accuracy a... | a global fit of the mssm with gambit |
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