⚛️ Category

hep-ex

2517 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

The Search Budget of the BSM Resonance Program

This paper quantifies the statistical trials factor of the ATLAS BSM resonance program by calculating that its current published record requires a local significance of 6.55σ for a 5σ global discovery, while a fully combinatorial scan would only marginally increase this requirement to 7.11σ, and further argues that two-stage unblinding is a superior safeguard against spurious signals in machine-learning searches where trials factors are difficult to enumerate.

Theresa Reisch, Tobias Golling2026-08-21
⚛️ nuclear experiments

Observation of long-range collective flow in OO and NeNe collisions and implications for nuclear structure studies

The CMS collaboration at the LHC reports the first observation of significant long-range collective flow in oxygen-oxygen and neon-neon collisions at 5.36 TeV, demonstrating that the measured flow harmonics and their ratios are sensitive to the intrinsic nuclear structures of 16^{16}O and 20^{20}Ne and provide new constraints for hydrodynamic models incorporating *ab initio* nuclear inputs.

CMS Collaboration2026-08-20
⚛️ phenomenology

Compact Stars as Portals to Extra-Dimensional Dark Matter

This paper proposes that asymmetric dark matter capable of propagating into extra dimensions can trigger the collapse of neutron stars into long-lived black holes that consume the entire star, thereby imposing significantly tighter constraints on dark matter masses and extra-dimensional sizes compared to standard three-dimensional scenarios.

Raghuveer Garani, Chris Kouvaris, Michel H. G. Tytgat, Jérôme Vandecasteele2026-08-20
⚛️ high-energy experiments

Machine learning techniques for jet reconstruction at LHCb and application to the search for H→bbˉH \to b \bar{b} and H→ccˉH \to c \bar{c} in s=13\sqrt{s}=13 TeV $pp$ collisions

This paper presents machine learning techniques for jet-energy calibration and flavor tagging at LHCb, which are applied to set 95% confidence level upper limits on the inclusive production of H→bbˉH \to b\bar{b} and H→ccˉH \to c\bar{c} decays using 1.6 fb−1^{-1} of s=13\sqrt{s}=13 TeV $pp$ collision data.

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. A (…)2026-08-20
🔬 physics

Transferable Fast Calorimeter Shower Generation via Multi-Geometry Pre-training

This paper demonstrates that pre-training a deep generative model on a diverse set of synthetic calorimeter geometries (SimpleBox) enables effective transfer to unseen detectors, significantly reducing the data requirements and improving performance compared to training from scratch or using realistic detector priors.

Thorsten Buss, Henry Day-Hall, Frank Gaede, Gregor Kasieczka, Katja Krüger, Peter McKeown, Lorenzo Valente2026-08-20
⚛️ high-energy experiments

Search for anomalous couplings in WW and WZ production with single-lepton final states in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 138 fb−1^{-1} of 13 TeV proton-proton collision data from the CMS experiment, this study constrains anomalous triple gauge boson and vector boson-quark couplings via an effective field theory approach in WW and WZ production with single-lepton final states, achieving the most stringent constraints to date on triple gauge couplings by focusing on high-energy hadronic decays reconstructed as large-radius jets.

CMS Collaboration2026-08-20
⚛️ high-energy experiments

Performance of heavy-flavour jet identification in the CMS high-level trigger in proton-proton collisions at s\sqrt{s} = 13.6 TeV

This paper presents the design, commissioning, and performance of new deep-learning-based heavy-flavour jet identification algorithms deployed in the CMS high-level trigger for 13.6 TeV proton-proton collisions, which significantly improved signal efficiency for key physics processes including Higgs boson production and decay.

CMS Collaboration2026-08-20