1434 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.
The paper proposes that detonating nuclear bombs to split an asteroid in flight is the most effective method for deflecting its trajectory, detailing the specific mechanisms and timing required for such an intervention.
Using 140 fb of proton-proton collision data at TeV collected by the ATLAS detector, this paper reports the first observation of top-quark pair production in association with two photons () with a significance of 5.2 standard deviations and measures its fiducial cross section to be fb.
This paper demonstrates that Optimal Transport methods achieve state-of-the-art performance in distinguishing electrons from neutral pions in Liquid Argon Time Projection Chamber neutrino experiments using MicroBooNE simulated data, highlighting the technique's broader potential for LArTPC-based reconstruction.
Using 20.28 fb of data collected by the BESIII detector at the resonance, this study reports the first search for the CP-violating process , finding no significant signal and setting an upper limit of on the joint branching fraction at the 90% confidence level.
Using LHCb data from 2015–2018, researchers observed the first evidence of CP violation in beauty baryon decays to charmonium, measuring a combined asymmetry difference of with a significance of .
This paper demonstrates that two complementary models of nucleon structure yield consistent predictions for light-front transverse charge and magnetisation densities, revealing distinct flavour-dependent quark radii, the dominant magnetic activity of valence quarks due to orbital angular momentum, and a characteristic transverse charge displacement in polarised nucleons.
This paper demonstrates that a calibrated 1060 nm laser setup can effectively characterize the spatial and timing resolutions of AC-LGAD strip sensors with results compatible to 120 GeV proton testbeam measurements, offering a valuable tool for accelerating R&D in 4D tracking detectors supported by TCAD and Weightfield2 simulations.
This paper introduces a novel amortized inference technique using likelihood-weighted Normalizing Flows that overcomes the limitations of standard unimodal base distributions in capturing multi-modal posteriors by initializing the flow with a Gaussian Mixture Model, thereby enabling efficient and accurate parameter estimation in high-dimensional inverse problems without requiring posterior training samples.
This paper presents a global QCD analysis incorporating recent MARATHON experiment data to simultaneously determine parton distribution functions and nucleon off-shell corrections, revealing that both isoscalar and isovector nuclear effects are required to describe light nuclei () and that their EMC ratios differ significantly from naive extrapolations of heavy nuclei.
Researchers at the China Spallation Neutron Source successfully developed and validated an eV-range polarized neutron system using an in-situ He Spin-Exchange Optical Pumping filter and solenoidal guide field, achieving a measured parity violation asymmetry of % at the 0.747 eV resonance of La to support future Time-Reversal Invariance Violation studies.