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Dark matter annihilation via Breit-Wigner enhancement with heavier mediator
Published 2025-02-01“…However, a supermassive black hole can accelerate the dark matter particles to reactivate this resonant annihilation whose subsequent decay to photons leaves a unique signal. The running Fermi-LAT and the future COSI satellites can test this scenario.…”
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123
Modern Imaging Methods in the Diagnosis of Neurodegenerative Diseases
Published 2025-02-01“…Advanced brain imaging techniques, such as magnetic resonance imaging (MRI), positron emission tomography (PET), single photon emission tomography (SPECT) and functional magnetic resonance imaging (fMRI), play a key role in the diagnosis and monitoring of neurodegenerative diseases. …”
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124
Status of Serpent Monte Carlo code in 2024
Published 2025-01-01“…In Kraken, Serpent can be used either as a high-fidelity neutronics solver, or for generating homogenized group constants for the Ants nodal neutronics code. The neutron and photon transport modes in Serpent enable using the code also for various stand-alone applications beyond reactor physics, such as radiation shielding and fusion neutronics. …”
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125
The gospel contra Nietzsche: a South African literary critique of Wille zur Macht
Published 2017-06-01“… A century of scholarship has shed countless photons of light on the reception of Friedrich Nietzsche’s ideas in numerous countries. …”
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Finding excesses in model parameter space
Published 2025-02-01“…We illustrate this method for the case of axion-like particles decaying to photons at beam-dump experiments. For poor detector resolution the diphoton mass cannot be reliably reconstructed, so there is no simple high-level observable that can be used to perform a bump hunt. …”
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127
Sarcopenia as a leading component of malignant cachexia syndrome
Published 2012-02-01“…Various procedures, including anthropometry, bioimpedance analysis, dual photon X-ray absorptiometry can be applied in diagnostics of sarcopenia. …”
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128
Production of Σ baryons as a function of multiplicity in pp collisions at the LHC with ALICE
Published 2025-01-01“…Historically, the first one used the decay channel Σ+ → pπ0 with reconstruction of the proton with the tracking systems at mid-rapidity and the π0 in the electromagnetic calorimeter EMCAL or via the photon conversion method. The second technique used the decay channel ∑-± → n¯π± where charged pions are reconstructed with the tracking systems and the anti-neutron in the precise electromagnetic calorimeter PHOS. …”
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Quantum control in size selected semiconductor quantum dot thin films
Published 2025-01-01“…Third harmonic generation (λ 3 = 343 nm, hν = 3.61 eV) for a fundamental wavelength of λ 1 = 1,030 nm is used to control quantum interference of three-photon resonant paths between the valence and conduction bands. …”
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Hidden monopole dark matter via axion portal and its implications for direct detection searches, beam-dump experiments, and the H0 tension
Published 2020-01-01“…We also note that the hidden photons mainly produced by the axion decay contribute to dark radiation with ∆Neff ≃ 0.6 which can relax the H0 tension.…”
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Probing exotic long-lived particles from the prompt side using the CONTUR method
Published 2025-02-01“…The probed models include feebly-interacting dark matter, hidden sector models mediated by a heavy neutral scalar, dark photon models and a model featuring photo-phobic axion-like particles.…”
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Microbial methane production from calcium carbonate at moderately alkaline pH
Published 2025-02-01“…Cells were observed in association with the carbonate mineral matrix via coherent anti-Stokes Raman scattering and two-photon excitation fluorescence microscopy. Genome-resolved metagenomics of the enrichment community confirmed the presence of a methanogen (Methanobacterium sp.) with the metabolic potential for hydrogenotrophic methanogenesis in addition to five bacterial community members. …”
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Complete asymmetric polarization conversion at zero-eigenvalue exceptional points of non-Hermitian metasurfaces
Published 2024-10-01“…The inherent adaptability of photonic non-Hermitian systems in configuring gain and loss has allowed us to observe a plethora of counterintuitive phenomena, largely as a consequence of the eigenspace reduction at these exceptional points. …”
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Multi-parameter control of photodetection in van der Waals magnet CrSBr
Published 2025-02-01“…Additionally, the unique spin-charge coupling engenders a photon energy-dependent photocurrent that is modulated by an external field and is validated by first-principle calculations. …”
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Quantum illumination networks
Published 2025-02-01“…Despite the interference of different returning signals at the single antenna and photon loss due to multiple-access channels, we develop two types of measurement designs: one based on parametric amplification and the other on correlation-to-displacement conversion. …”
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Low-error encoder for time-bin and decoy states for quantum key distribution
Published 2025-02-01“…A key device for decoy-state QKD is the state encoder, which must produce low-error, stable states with varying photon mean values. Here, we introduce the MacZac (Mach-Zehnder-Sagnac), a time-bin encoder with ultra-low QBER (<2 × 10−5) and high stability. …”
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Advances in the catalytic conversion of CO2
Published 2025-01-01“…However, challenges such as low photon absorption efficiency and catalyst degradation have limited its large-scale application. …”
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Multi-messenger probes of asteroid mass primordial black holes: Superradiance spectroscopy, Hawking radiation, and microlensing
Published 2025-02-01“…Using axion-like particles as an example, we show that line signals emerging from a superradiated axion cloud combined with black hole Hawking radiation in extragalactic and galactic halos, along with microlensing observations lead to complementary constraints on parameter space combinations including the axion-photon coupling, axion mass, black hole mass, and its dark matter fraction, fPBH. …”
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Collider and CMB complementarity of leptophilic dark matter with light Dirac neutrinos
Published 2025-01-01“…Considering DM relic to be generated via the thermal freeze-out, we check the discovery prospects at future lepton colliders via mono-photon plus missing energy searches. The right chiral parts of light Dirac neutrinos get thermalised due to their interactions with the bath as well as leptophilic DM, leading to enhanced effective relativistic degrees of freedom N eff within reach of future cosmic microwave background (CMB) experiments. …”
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Translaminar synchronous neuronal activity is required for columnar synaptic strengthening in the mouse neocortex
Published 2025-02-01“…Using a novel microprism preparation and in vivo 2-photon imaging in neonatal mice, we show that synchronous neuronal activity is organized in barrel columns across layers. …”
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