⚛️ Category

hep-ex

2503 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

Search for charged-lepton-flavour violating eμtqe\mu tq interactions at s=13\sqrt{s}=13 TeV with the ATLAS detector

Using 140 fb−1^{-1} of proton-proton collision data at s=13\sqrt{s}=13 TeV collected by the ATLAS detector, this study searches for charged-lepton-flavour violating eμtqe\mu tq interactions in top-quark production and decay, finding no significant deviation from the Standard Model and setting 95% confidence level upper limits on relevant Wilson coefficients and top-quark branching ratios within an Effective Field Theory framework.

ATLAS Collaboration2026-10-02
⚛️ high-energy experiments

Mechanisms of DDˉD \bar{D} pair production in e+e−→e+e−DDˉe^{+} e^{-} \to e^{+} e^{-} D \bar{D} and AA→AADDˉAA \to AA D \bar{D} reactions and production of exotic charmonia

This paper analyzes mechanisms of DDˉD\bar{D} pair production in e+e−e^+e^- and ultraperipheral heavy-ion collisions, concluding that the observed D0Dˉ0D^0\bar{D}^0 continuum bump originates from t/ut/u-channel exchanges rather than a resonance, while also characterizing the χc2(3930)\chi_{c2}(3930) as a candidate for the χc2(2P)\chi_{c2}(2P) state and providing branching fraction estimates and differential distributions for Belle II and LHC kinematics.

Antoni Szczurek, Izabela Babiarz, Piotr Lebiedowicz, Wolfgang Schäfer2026-10-02
⚛️ high-energy experiments

A-GHOST: High-rate streaming of trigger-level data to programmable GPU inference

This paper presents A-GHOST, a proof-of-concept system that streams high-rate, trigger-level data from detectors to a GPU backend using the NVIDIA IGX Thor kit, achieving sustained 100 Gbps throughput with 0.118 ms inference latency to enable complex, generative neural network algorithms beyond the capabilities of traditional hardware triggers.

I. Xiotidis, N. Clarke Hall, M. S. Larson, R. Gurunathan, C. Burdick, T. Du, N. Konstantinidis, K. Kordas, D. Leshchev (…)2026-10-02
⚛️ high-energy experiments

The Scalar MSW Effect: Compact analytical formulas for neutrino oscillations with large matter effects, including μ−μ\mu -\mu and τ−τ\tau -\tau dominant matter potentials

This paper extends the Jacobi diagonalization method to derive compact, accurate analytical formulas for three-flavor neutrino oscillations in matter, revealing that scalar non-standard interactions can induce an energy-independent resonant "scalar MSW" effect and providing effective parameter mappings for both standard and exotic matter potentials.

Sandhya Choubey, Andreas Lund2026-10-02
⚛️ lattice

Drell-Yan lepton pair production from low to high transverse momentum

This paper presents a comprehensive technique for computing Drell-Yan lepton pair production across a wide transverse momentum range with unprecedented theoretical precision, incorporating non-perturbative lattice QCD inputs and utilizing a maximum entropy approach to generate strictly positive event weights.

Benoît Assi, Enrico Bothmann, John Campbell, Christian Gütschow, Stefan Höche, Wan-Li Ju, Max Knobbe, Marek Schönherr, J (…)2026-10-02
⚛️ high-energy experiments

Clash of the Titans: ultra-high energy KM3NeT event versus IceCube data

This paper reports a significant statistical tension (2.0σ–3.6σ) between KM3NeT's detection of a single ultra-high-energy neutrino event exceeding 10 PeV and the absence of similar events in IceCube's longer dataset, suggesting the KM3NeT observation likely represents the first detection of a new, distinct astrophysical source rather than a standard diffuse flux.

Shirley Weishi Li, Pedro Machado, Daniel Naredo-Tuero, Thomas Schwemberger2026-10-01
⚛️ high-energy experiments

Search for events with one displaced vertex from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in $pp$ collisions at s=13\sqrt{s}=13 TeV

Using 140 fb−1^{-1} of 13 TeV proton-proton collision data, the ATLAS collaboration searched for long-lived neutral particles decaying into hadronic jets within the muon spectrometer, finding no excess over background and setting the strongest limits to date for photo-phobic axion-like particles while excluding Higgs boson branching fractions above 1% for decay lengths between 5 cm and 40 m.

ATLAS Collaboration2026-10-01
⚛️ high-energy experiments

Modeling Uncertainties on the Z Boson Background in the Context of High Precision W Boson Mass Measurements

This study investigates the impact of ZZ boson background modeling uncertainties on high-precision WW boson mass measurements in the muon decay channel, finding that while such mismodeling can induce a non-negligible 8 MeV shift, it is insufficient to explain the significant discrepancy observed in the CDF collaboration's results.

Maarten Boonekamp, Matthias Schott, Chen Wang2026-10-01
⚛️ high-energy experiments

POPxf: An Exchange Format for Polynomial Observable Predictions

The paper introduces POPxf, a structured, machine-readable data format designed to encode semi-analytical theoretical predictions as polynomials in model parameters—particularly for Effective Field Theory applications—to enhance reproducibility, facilitate global fits, and streamline the exchange of uncertainty-aware results within the high-energy physics community.

Ilaria Brivio (ed.), Ken Mimasu (ed.), Peter Stangl (ed.), Anke Biekötter, Ana R. Cueto Gómez, Charlotte Knight, Luca Ma (…)2026-10-01