⚛️ Category

hep-ex

2117 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.

⚛️ high-energy experiments

Probing Long-Lived Particle Production in Muon Decays at the SNS with a Highly Capable Hydrocarbon Detector

This paper proposes using a tons-scale hydrocarbon scintillator detector at the Spallation Neutron Source to search for sub-GeV dark sector particles, such as axion-like particles and heavy neutral leptons, produced in muon decays, demonstrating the potential for order-of-magnitude sensitivity improvements over current limits through effective cosmic ray background rejection.

M. Andriamirado, A. B. Balantekin, C. D. Bass, O. Benevides Rodrigues, E. P. Bernard, N. S. Bowden, C. D. Bryan, R. Carr (…)2026-06-18
⚛️ high-energy experiments

MiniFool -- Physics-Constraint-Aware Minimizer-Based Adversarial Attacks in Deep Neural Networks

This paper introduces MiniFool, a physics-constraint-aware adversarial attack algorithm that minimizes a cost function combining a χ2\chi^2 test statistic with target score deviation to evaluate the robustness of deep neural networks in particle and astroparticle physics, as demonstrated through applications on MNIST, IceCube tau neutrino data, and CMS Open Data.

Lucie Flek, Oliver Janik, Philipp Alexander Jung, Akbar Karimi, Timo Saala, Alexander Schmidt, Matthias Schott, Philipp (…)2026-06-17
⚛️ high-energy experiments

Gravitational Wave Probe of Singlet-Doublet Dark Matter Induced Radiative Neutrino Mass

This paper proposes a one-loop radiative neutrino mass model featuring singlet-doublet dark matter and Z2\mathcal{Z}_2-odd scalars, demonstrating that quartic Higgs-scalar interactions can induce a first-order phase transition producing observable gravitational waves while simultaneously satisfying constraints from neutrino mass, the muon anomalous magnetic moment, and lepton flavor violation.

Ujjal Kumar Dey, Santu Kumar Manna, Partha Kumar Paul, Sujit Kumar Sahoo, Narendra Sahu2026-06-17
⚛️ high-energy experiments

Probing new physics in the Boosted HH→bbˉγγHH \to b\bar{b}γγ channel at the LHC

This paper presents the first dedicated study of the boosted HH→bbˉγγHH \to b\bar{b}\gamma\gamma channel at the LHC, demonstrating that this topology enhances sensitivity to both non-resonant quartic gauge-Higgs coupling deviations and resonant heavy scalar decays, thereby improving constraints on new physics parameters and extending discovery reach in the high-energy double-Higgs regime.

Mohamed Belfkir2026-06-17
⚛️ high-energy experiments

Search for dark matter produced in association with a Higgs boson decaying to bottom quarks in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 101 fb−1^{-1} of 13 TeV proton-proton collision data from the CMS detector, this study searches for dark matter produced in association with a Higgs boson decaying to bottom quarks, finding no evidence of new physics and setting 95% confidence level exclusion limits on baryonic-Z' and 2HDM+a models.

CMS Collaboration2026-06-17
⚛️ high-energy experiments

Improved limits on a new Z′Z' in B−LB-L scenarios with the NA64 experiment at CERN

The NA64 experiment at CERN utilized its full 2016–2022 electron-beam dataset to establish the most stringent laboratory constraints to date on the coupling constant of a B−LB-L Z′Z' boson for sub-GeV masses, significantly improving sensitivity through a threefold increase in statistics and the inclusion of resonant e+e−e^+e^- annihilation channels.

The NA64 Collaboration, Yu. M. Andreev, A. Antonov, M. A. Ayala Torres, D. Banerjee, B. Banto Oberhauser, V. Bautin, J. (…)2026-06-17
⚛️ high-energy experiments

Final Report on the Measurement of the Positive Muon Anomalous Magnetic Moment at Fermilab to 127 ppb

The Fermilab Muon g-2 experiment presents its final measurement of the positive muon anomalous magnetic moment using data from 2021 to 2023, achieving a precision of 127 ppb and establishing a new experimental world average that continues to show a significant discrepancy with Standard Model predictions.

2 Collaboration, D. P. Aguillard (University of Michigan, Ann Arbor, Michigan, USA), T. Albahri (University of Liverpool (…)2026-06-17
⚛️ high-energy experiments

Observation of an Altered a0(980)a_{0}(980) Line shape in D+→π+ηηD^{+} \rightarrow \pi^{+}\eta\eta

Using BESIII data, this paper reports the first amplitude analysis of D+→π+ηηD^{+} \rightarrow \pi^{+}\eta\eta, revealing that the observed a0(980)a_{0}(980) line shape significantly deviates from conventional models and cannot be satisfactorily described without compromising the physical consistency of the resonance's pole position.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai, O. Bakin (…)2026-06-17