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

Two-particle number and transverse momentum balance function with event topology in pp collisions at s=13\sqrt{s}=13 TeV

This paper presents the first study of charge-dependent two-particle number and transverse momentum balance functions in pp collisions at s=13\sqrt{s}=13 TeV, revealing that balance functions narrow with increasing multiplicity and are wider in isotropic than jet-like events, while comparing PYTHIA8 and EPOS-LHC models to isolate hydrodynamic radial-flow effects on charge conservation.

Subash Chandra Behera, Arvind Khuntia2026-08-25
⚛️ high-energy experiments

Heavy Neutral Lepton at Same-Sign Muon Collider

This paper investigates the discovery potential of heavy neutral leptons at the proposed μ\muTRISTAN same-sign muon collider, demonstrating that its high-energy lepton-number-violating and lepton-flavor-violating signatures could significantly surpass current electroweak precision bounds on HNL mixing, particularly for masses in the 5–10 TeV range.

Ryuichiro Kitano, Ian Low, Ryutaro Matsudo, Shohei Okawa, Subhojit Roy2026-08-25
⚛️ nuclear experiments

Radiative corrections to inverse beta decay: a precision analysis for reactor neutrinos

This paper presents a complete, high-precision calculation of radiative corrections to the inverse beta decay reaction using heavy-baryon chiral perturbation theory, incorporating quantum electrodynamics, chromodynamics, and electroweak contributions to provide updated cross-section predictions essential for reactor neutrino flux normalization, oscillation parameter determination, and new physics searches.

Oleksandr Tomalak2026-08-25
⚛️ high-energy experiments

UV cut-off of the Standard Model and proton decays

This paper proposes a theoretical framework where a fundamental scale Λ1011\Lambda \gtrsim 10^{11} GeV, potentially arising from composite Higgs models, explains small neutrino masses and accidental baryon/lepton number symmetries while predicting a proton lifetime consistent with a potential Super-Kamiokande observation of pπ0μ+p \to \pi^0 \mu^+ decay, which Hyper-Kamiokande is expected to confirm.

Ryuichiro Kitano, Shohei Okawa2026-08-25
⚛️ high-energy experiments

Probing direct CPCP violation in Λb0Pc+hΛ_b^0 \to P_c^+ h^- (h=π,K)(h=π,K) with final-state rescattering

Inspired by recent LHCb measurements, this paper utilizes the final-state rescattering framework to predict that the decays Λb0Pc+π\Lambda_b^0 \to P_c^+ \pi^- exhibit branching fractions around 10610^{-6} with direct CP asymmetries near 1%, whereas the Λb0Pc+K\Lambda_b^0 \to P_c^+ K^- channel shows negligible CP violation and branching ratios highly sensitive to the spin assignments of the PcP_c states.

Zhu-Ding Duan, Tian-Liang Feng, Run-Hui Li, Ming-Zhu Liu, Jian-Peng Wang, Fu-Sheng Yu2026-08-25
⚛️ high-energy experiments

On-chip probabilistic inference for charged-particle tracking at the sensor edge

This paper demonstrates the successful implementation of neural networks on the front-end electronics of silicon particle detectors to perform real-time probabilistic inference of charged-particle kinematics, thereby enabling intelligent data selection at the sensor edge under strict constraints on bandwidth, latency, and power.

Arghya Ranjan Das, David Jiang, Rachel Kovach-Fuentes, Shiqi Kuang, Ana Sofía Calle Muñoz, Danush Shekar, Jennet Dickins (…)2026-08-25
⚛️ high-energy experiments

Electromagnetic Shower Reconstruction and Identification in FASER's Emulsion Detector for LHC Forward Neutrino Measurements

This paper presents a validated framework for reconstructing and identifying electromagnetic showers in the FASERnu emulsion detector using CERN test-beam data, achieving high background rejection and energy resolution through a multi-level selection algorithm and a clustering-based reconstruction method.

FASER Collaboration, Roshan Mammen Abraham, Xiaocong Ai, Saul Alonso Monsalve, John Anders, Emma Kate Anderson, Akitaka (…)2026-08-25