Negative / Null Result ReportOpen accessComputer Science
Piero Ullio, Marc Kamionkowski, Petr Vogel · 2000 · arXiv
We investigate whether the annual modulation observed in the DAMA experiment can be due to a weakly-interacting massive particle (WIMP) with an axial-vector (spin-dependent; SD) coupling to nuclei. We evaluate the SD WIMP-proton cross section under the assumption that such scattering accounts for the DAMA modulation, and we do the same for a SD WIMP-neutron cross section. We show that SD WIMP-proton scattering is ruled out in a model-independent fashion by null searches for energetic neutrinos from WIMP annihilation in the Sun, and that SD WIMP-neutron scattering is ruled out for WIMP masses >
View details →Negative / Null Result ReportOpen accessPhysics
Sohan Ghodla · 2024 · arXiv
The upcoming LISA mission will be able to detect gravitational waves from galactic and extragalactic compact binaries. Here, we report on LISA's capability to probe dark matter around these binaries if the latter constitute black holes. By analyzing the variation in the chirp mass of the binary, we show that depending on the black hole masses, LISA should be able to probe their surrounding dark matter to a luminosity distance of $\approx 1$ Gpc if such binaries are observed within the inner $\approx 10$ pc of their galactic center for particle-like dark matter or near the galactic solitonic co
View details →Negative / Null Result ReportOpen accessEconomics, Econometrics and Finance
Murad Farzulla · 2026 · arXiv
This study investigates whether cryptocurrency whitepaper narratives align with empirically observed market factor structure. We construct a pipeline combining zero-shot NLP classification of 38 whitepapers across 10 semantic categories with CP tensor decomposition of hourly market data (49 assets, 17,543 timestamps). Using Procrustes rotation and Tucker's congruence coefficient (phi), we find weak alignment between claims and market statistics (phi = 0.246, p = 0.339) and between claims and latent factors (phi = 0.058, p = 0.751). A methodological validation comparison (statistics versus fact
View details →Negative / Null Result ReportOpen accessComputer Science
V. Barger, D. Marfatia, K. Whisnant · 2005 · arXiv
We study the proposal that mass-varying neutrinos could provide an explanation for the LSND signal for \barν_mu to \barν_e oscillations. We first point out that all positive oscillation signals occur in matter and that three active mass-varying neutrinos are insufficient to describe all existing neutrino data including LSND. We then examine the possibility that a model with four mass-varying neutrinos (three active and one sterile) can explain the LSND effect and remain consistent with all other neutrino data. We find that such models with a 3+1 mass structure in the neutrino sector may explai
View details →Negative / Null Result ReportOpen accessPhysics
E. Paunzen, G. Handler, K. Honkova et al. · 2018 · arXiv
The rapidly oscillating Ap (roAp) stars exhibit pulsational photometric and/or radial velocity variations on time scales of several minutes, which are essential to test current pulsation models as well as our assumptions of atmospheric structure characteristics. In addition, their chemical peculiarity makes them very interesting for probing stellar formation and evolution in the presence of a global magnetic field. To date, a limited number of only 61 roAp stars are known to show photometric variability. On the other hand, a literature survey yields 619 unique stars that have unsuccessfully be
View details →Negative / Null Result ReportOpen accessPhysics
Donglian Xu · 2017 · arXiv
In 2013, the IceCube Neutrino Observatory located at the geographic South Pole detected evidence for a diffuse astrophysical neutrino flux above ~60 TeV. To this day, IceCube has operated with full detector configuration for more than 6 years. The observed astrophysical neutrino flux has been confirmed with > 6$σ$ significance with both events starting within the detector (all flavor) and events traversing through the Earth ($ν_μ$ charged-current). Somewhat equal flavor ratio of astrophysical neutrinos is expected at Earth assuming standard thorough oscillation. A search for tau neutrinos has
View details →Negative / Null Result ReportOpen accessPhysics
U. Hopp, R. E. -Schulte-Ladbeck, J. Kerp · 2006 · arXiv
We address the hypothesis that High Velocity Clouds correspond to the "missing" dwarf galaxies of the Local Group predicted by cosmological simulations. To this end, we present optical and near-infrared photometry of five additional High Velocity Clouds, one of which produces Lyman series absorption on the sight line towards the Quasar Ton S210, with sufficient resolution and sensitivity to enable the detection of an associated stellar content. We do not detect significant stellar populations intrinsic to any of the five clouds. In combination with the results from our paper I, which had yield
View details →Negative / Null Result ReportOpen accessComputer Science
Massimo Porrati, Nicholas Penthorn, John Rooney et al. · 2018 · arXiv
In an externally driven multilevel quantum system observation that the NEXT jump has not yet happened affects its future development. In previous work [Phys. Rev. A36, 929 (1987)] it was shown that this class of measurement makes it possible to observe remarkably long dark intervals -- or intermittency -- in the atomic fluorescence of an atom with 3 or more levels. Those calculations were carried out when the driven oscillations or Rabi flopping between the ground state and a strongly fluorescing state were fast compared to its lifetime. In systems with solid state Qubits the accessible parame
View details →Negative / Null Result ReportOpen accessPhysics
Christian Trenkel, Steve Kemble, Neil Bevis et al. · 2010 · arXiv
We suggest that LISA Pathfinder could be used to subject TEVES, and in particular the non-relativistic MOND phenomenology it incorporates, to a direct, controlled experimental test, in just a few years' time. The basic concept is to fly LISA Pathfinder through the region around the Sun-Earth saddle point, following its nominal mission, in order to look for anomalous gravity gradients. We examine various strategies to reach the saddle point, and conclude that the preferred strategy, resulting in relatively short transfer times of order one year, probably involves a lunar fly-by. We present robu
View details →Negative / Null Result ReportOpen accessComputer Science
Chao-Qiang Geng, Chia-Wei Liu, Jiabao Zhang · 2023 · arXiv
We explore a new approach to search for a low-mass $Z^{\prime}$ particle through $J/ψ$ decays by identifying its existence through parity-violating phenomena in the isospin-violating final states of $Λ\overlineΣ^{0}$ and the corresponding charge conjugated states of $\overlineΛΣ^{0}$. Our investigation centers on a generation-independent and leptophobic $Z^{\prime}$ with its mass below 10 GeV. Given the present experimental conditions at the Beijing Spectrometer III~(BESIII) and the anticipated opportunities at the Super Tau Charm Factory~(STCF), we conduct Monte-Carlo simulations to predict p
View details →Negative / Null Result ReportOpen accessComputer Science
Andrew Fowlie · 2014 · arXiv
The absence of supersymmetry or other new physics at the Large Hadron Collider (LHC) has lead many to question naturalness arguments. With Bayesian statistics, we argue that natural models are most probable and that naturalness is not merely an aesthetic principle. We calculate a probabilistic measure of naturalness, the Bayesian evidence, for the Standard Model (SM) with and without quadratic divergences, confirming that the SM with quadratic divergences is improbable. We calculate the Bayesian evidence for the Constrained Minimal Supersymmetric Standard Model (CMSSM) with naturalness priors
View details →Negative / Null Result ReportOpen accessPhysics
M. Fukugita, M. Kawasaki · 1993 · arXiv
We investigate reheating of the universe by early formation of stars and quasars in the hierarchical clustering scheme of cold dark matter scenario, with perturbation fluctuations normalized by the COBE data. It is found that ionizing uv flux from OB stars with the abundance given by the standard initial mass function is strong enough to ionize the universe from $z\approx 30$ to the present epoch, if 1--2\% of the collapsed baryons go into stars. This lessens significantly the CMB anisotropies at a small angular scale. Reionization also increases the Jeans mass to $M_{\rm luminous}\approx 10^9
View details →Negative / Null Result ReportOpen accessPhysics
Eugene A. Lim, Dennis Simon · 2011 · arXiv
In this paper, we investigate the utility of Minkowski Functionals as a probe of cold/hot disk-like structures in the CMB. In order to construct an accurate estimator, we resolve a long-standing issue with the use of Minkowski Functionals as probes of the CMB sky -- namely that of systematic differences ("residuals") when numerical and analytical MF are compared. We show that such residuals are in fact by-products of binning, and not caused by pixelation or masking as originally thought. We then derive a map-independent estimator that encodes the effects of binning, applicable to beyond our pr
View details →Negative / Null Result ReportOpen accessComputer Science
Ciarán Walsh, Emilio Barkett · 2026 · arXiv
Large language models are increasingly used as behavioral simulators, but it remains unclear when their outputs reflect human-like cognitive mechanisms rather than prompt-sensitive surface patterns. We study this question through the realization effect, a well-characterized finding in behavioral economics in which risk-taking differs systematically after paper versus realized gains and losses. We evaluate LLM behavior at three levels: prompt-only behavioral sensitivity, linear readout of internal representations, and causal control via activation steering. Prompt-only results show systematic c
View details →Negative / Null Result ReportOpen accessPhysics
Kim-Vy H. Tran, Simon J. Lilly, David Crampton et al. · 2004 · arXiv
We present results from a deep spectroscopic search in the 9150A atmospheric window for z~6.5 Lyman-alpha emitting galaxies using the VLT/FORS2. Our multi-slit+narrow-band filter survey covers a total spatial area of 17.6 sq. arcmin in four different fields and reaches fluxes down to 5x10^(-18) erg/s/cm^2 (7 sigma detection). Our detection limit is significantly fainter than narrow-band searches at this redshift and fainter also than the unlensed brightness of Hu et al.'s HCM6A at z=6.56, and thus provides better overlap with surveys at much lower redshifts. Eighty secure emission line galaxie
View details →Negative / Null Result ReportOpen accessComputer Science
James Overduin, Francis Everitt, Paul Worden et al. · 2014 · arXiv
The Satellite Test of the Equivalence Principle (STEP) will advance experimental limits on violations of Einstein's Equivalence Principle from their present sensitivity of 2 parts in $10^{13}$ to 1 part in $10^{18}$ through multiple comparison of the motions of four pairs of test masses of different compositions in a drag-free earth-orbiting satellite. We describe the experiment, its current status, and its potential implications for fundamental physics. Equivalence is at the heart of general relativity, our governing theory of gravity, and violations are expected in most attempts to unify thi
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Austin Blea, Sam Schreyer, null null et al. · 2020 · John Heinrichs Scholarly & Creative Activities Day
The question being asked in this research paper is what explains student loan default rates across the three types of United States universities. The three types of universities are non-profit, for-profit, and public. This paper uses…
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Kathleen Ward, Christine Hober, null null et al. · 2022 · John Heinrichs Scholarly & Creative Activities Day
Leaders in nursing education embrace innovative, real‐world learning environments that transform today's generation of nursing students into critical thinkers. Scheduling exclusive child‐bearing practicums are challenging due to staffing,…
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Brandt Hagen, Lawson Ricke, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
The Dobot Magician is an all-in-one robot designed by the company Dobot for the purpose of teaching robotics. The magician is supposed to be able to grab things with both a pneumatic gripper and suction cup, draw, 3D print, and laser…
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Braxten Eilert, Zachary Parde, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
The debt to GDP ratio has been used as a key indicator for economists, governments and investors as a general measure of a country's ability to repay debt. The primary focus of our analysis was to see if there was correlation between the…
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Eugene Chon, Nicholas Stewart, null null et al. · 2020 · John Heinrichs Scholarly & Creative Activities Day
While major changes to chromosomal form is generally deleterious, karyotypes are not static. Major chromosomal rearrangements contribute to genetic isolation and divergence within and between species. As mechanisms that drive these…
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Willow Ludwig, Lauren Stallbaumer, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
Introduction: Stuttering is a communication disorder that may present difficulties such as producing fluent speech, having a fear of speaking, and experiencing limited inclusion, which. greatly impacts the quality of life and education of…
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Clayton Beutler, Mason Robbins, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
Baseball is said to be the oldest sport in America and considered to be America’s past time. Since the beginning, significant amounts of statistics and data have been recorded to examine a team’s wins, batting average, on-base percentage,…
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Hope Schuman, Mason Ibarra, null null et al. · 2023 · John Heinrichs Scholarly & Creative Activities Day
COVID-19, also known as coronavirus disease of 2019, is a virus that was first discovered in December of 2019. Symptoms of COVID-19 feel much like the flu, a cold, and pneumonia. In this report we analyzed how a country's gross domestic…
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Alicia Utley, Christine Hober, null null et al. · 2020 · John Heinrichs Scholarly & Creative Activities Day
Obesity is becoming a widely known health disparity, affecting over 300 million people worldwide. Obesity is associated with multiple comorbidities, many of which are categorized as leading causes of death in the United States. Citizens in…
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Steven Bolin, Brooke Mann, null null et al. · 2019 · John Heinrichs Scholarly & Creative Activities Day
Mental health stigma is defined as stereotypes and prejudice resulting from misconceptions about mental illness (Corrigan Watson, 2002 Boor 1978 found simulated college voters cast fewer votes for a candidate when it was known the…
View details →Negative / Null Result ReportMedicine
Martiren, Llaguno-Rubio, Fiori-Chincaro et al. · 2026 · Journal of clinical and experimental dentistry
To evaluate the morphological characteristics of hypercementosis and its association with local factors using cone beam computed tomography (CBCT) in a population from Uruguay. This observational, cross-sectional, retrospective study…
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Annah K. Bender · 2025 · Violence and Victims
How do survivors of intimate partner violence (IPV) conceptualize justice? In this exploratory qualitative study, I interviewed 30 female IPV survivors, 17 of whom pursued charges against their abuser and 13 who had not, asking: What does…
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Hannah Thomasy · 2020 · Eos
Ozone loss, perhaps as a consequence of a warming climate, may have been responsible for a catastrophic loss of biodiversity.
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Dorota Mącik, Wojciech Kędziora · 2025 · Health Psychology Report
Background In Poland, exclusionary societal attitudes towards gay men continue to persist. The stress associated with a lack of ac-ceptance is considered a significant component of minority stress, which, in turn, leads to anxiety and…
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