2101 papers
Hep-Ex explores the fascinating intersection where particle physics meets experimental reality. This field investigates how scientists build massive detectors and accelerate particles to test the fundamental laws of nature, turning abstract theories into measurable data. It is the rigorous process of searching for new particles or forces that could reshape our understanding of the universe, often requiring years of collaboration and engineering.
At Gist.Science, we ensure these discoveries become accessible to everyone. We process every new preprint in this category directly from arXiv, generating both plain-language explanations for curious readers and detailed technical summaries for specialists. Our goal is to bridge the gap between complex experimental results and public understanding without losing scientific nuance.
Below are the latest papers in Hep-Ex, freshly summarized and ready for you to explore.
This paper presents a magnetically levitated ferromagnetic vector force sensor capable of distinguishing spin-dependent exotic interactions by mapping forces to distinct translational modes, thereby enabling sensitive searches for parity-violating electron-electron couplings in the previously inaccessible millimeter-scale range.
This paper presents a model-independent extraction of the nucleon axial form factor by fitting NNLO chiral perturbation theory with explicit resonance contributions to lattice QCD data, successfully describing pion-mass and momentum dependencies to yield precise physical-point values for the axial charge and radius.
Using 138 fb⁻¹ of proton-proton collision data at 13 TeV collected by the CMS detector, this study searches for physics beyond the Standard Model in four- and three-top quark production events to constrain effective field theory Wilson coefficients, exclude narrow topphilic heavy resonances, and extract the top quark Yukawa coupling.
The ATLAS experiment measured -jet correlations in $pp$ and Pb+Pb collisions at TeV by categorizing mesons based on their isolation from jets and promptness, revealing that strong suppression persists up to high transverse momenta and providing new constraints on charmonium production mechanisms and their interaction with the quark-gluon plasma.
This paper details the on-sky performance and operational history of the LSST Camera's record-breaking 189-sensor CCD array from its arrival in May 2024 through its first year of operations at the Rubin Observatory, highlighting the resolution of technical challenges and confirming the system's capability to execute the Legacy Survey of Space and Time.
This paper demonstrates that extending the Standard Model with a second Higgs doublet can simultaneously explain multiple experimental anomalies, including flavor-violating Higgs decays, the W mass discrepancy, and B-physics tensions, while remaining consistent with stringent flavor constraints and predicting testable signatures like modified Higgs-tau couplings and top-quark flavor-changing decays at the LHC.
This paper proposes a direct detection strategy for ultralight dark matter by searching for time-dependent modulations in charged lepton flavor-violating decays (such as and ) at accelerator-based experiments like Mu3e, Belle-II, and FCC-ee.
The paper introduces SparsePixels, an FPGA-based framework that achieves constant-latency inference for sparse data by selectively computing only on active pixels, demonstrating a 73-fold speedup over standard dense CNNs for neutrino interaction identification with minimal performance loss.
This paper investigates decays using U-spin symmetry and finds that while the Standard Model can accommodate the data with free parameters, imposing theoretically motivated hierarchies leads to significant tensions—particularly in modes like —which cannot be fully resolved by simplistic new physics scenarios without invoking large non-factorizable contributions.
Using 140 fb of 13 TeV proton-proton collision data collected by the ATLAS detector, this study employs Gaussian process regression to model background challenges in a search for dimuon resonances between 35 and 75 GeV, finding no significant excess and setting new constraints on dark-photon and dark-matter-mediator models.