1429 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 proposes that the global hyperon polarization observed in low-energy heavy-ion collisions can be partially explained (accounting for ~23% of the signal) by a mechanism linking it to long-standing transverse polarization phenomena via the alignment of production and reaction planes driven by directed flow, rather than solely by quark-gluon plasma vorticity.
The paper proposes the Next-Generation Atmospheric Cherenkov Telescope Array (NG-ACTA), a proposed 10-km diameter mixed-aperture array of 88 telescopes designed to achieve unprecedented sensitivity from 20 GeV to 100 TeV for transformative discoveries in multi-messenger astronomy, cosmic ray origins, and dark matter physics.
This paper presents updated projections for measuring the Higgs self-coupling at a 550 GeV linear collider using the ILD detector, incorporating improved flavor tagging and kinematic reconstruction techniques alongside ongoing re-analyses with fast simulations to assess sensitivity to deviations from the Standard Model.
This paper employs the QCD sum rule approach with three distinct interpolating currents to predict the masses and current coupling constants of fully heavy pentaquark candidates containing three charm and two bottom quarks () or three bottom and two charm quarks () with spin-parity .
Using 138 fb of 13 TeV proton-proton collision data collected by the CMS experiment, this paper presents the first unfolded double-differential cross-section measurements of boosted W+jets events to extract a W boson mass of 80.83 0.55 GeV, achieving the smallest uncertainty to date for an all-jets final state at a hadron collider.
This paper investigates the potential of short-baseline reactor neutrino experiments to constrain the electromagnetic properties of neutrinos, specifically the weak mixing angle, neutrino charge radius, and effective magnetic moment, through electron-neutrino elastic scattering.
The paper introduces VecAmpFit, a new vectorized library designed for multidimensional amplitude analyses in high-energy physics, featuring explicit gradient calculation and simultaneous multi-dataset fitting capabilities for the Belle II experiment.
Using 164 fb⁻¹ of 13.6 TeV proton-proton collision data collected by the ATLAS detector, this study employs matrix element-based observables and angular distributions to constrain CP-odd couplings and probe Higgs boson interactions with polarized vector bosons in vector-boson fusion events, confirming Standard Model predictions while achieving improved sensitivity through a new neural network classification algorithm.
Using 140 fb of 13 TeV proton-proton collision data from the ATLAS detector, this paper presents a combined analysis of Higgs boson interactions with vector bosons across multiple decay channels, finding no evidence of CP violation and establishing the most stringent constraints to date on relevant CP-violating SMEFT Wilson coefficients, including simultaneous limits on three coefficients for the first time.
This paper demonstrates that assuming unpolarized mesons introduces a dominant, unquantified systematic uncertainty in nuclear modification factor () measurements, highlighting the critical need for precise polarization data to accurately interpret heavy quarkonium interactions with the Quark-Gluon Plasma.