⚛️ 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

Antineutron reconstruction in electromagnetic calorimeters with mixed-representation learning

This paper introduces the Mixed-representation Calorimetric Network (MrCAL), a physics-inspired deep learning model that significantly enhances antineutron reconstruction in electromagnetic calorimeters by achieving up to 96% improvement in momentum-direction precision and enabling the first direct measurement of momentum magnitude solely from ECAL readouts.

Yangu Li, Hongtian Yu, Yuyang Huang, Zhi Cao, Yunxuan Song, Yunfan Liu, Yajun Mao, YangHeng Zheng, Xiao-Rui Lyu, Qixiang (…)2026-07-14
⚛️ nuclear experiments

Search for two-neutrino double electron capture in 36^{36}Ar with the DarkSide-50 detector

The DarkSide-50 experiment conducted the first search for two-neutrino double electron capture in 36^{36}Ar using underground argon, setting a lower limit on the half-life of 9.2×10199.2 \times 10^{19} years at 90% confidence level without observing a significant signal, while projecting a 100-fold sensitivity improvement with the upcoming DarkSide-20k detector.

50 Collaboration, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave Pernas, H. O. Back, G. Batignani, W. (…)2026-07-14
⚛️ high-energy experiments

Study of the proccess e+e−→π+π−π0π0ηe^+e^-\to \pi^+\pi^-\pi^0\pi^0\eta in the c.m. energy range 1.6--2.0 GeV with the CMD-3 detector

Using 372 pb−1^{-1} of data collected by the CMD-3 detector at the VEPP-2000 collider, researchers measured the cross section for the process e+e−→π+π−π0π0ηe^+e^- \to \pi^+\pi^-\pi^0\pi^0\eta in the 1.6–2.0 GeV energy range, identifying 6,300 signal events and finding that the production dynamics are dominated by the ω(782)π0η\omega(782)\pi^0\eta final state with potential contributions from the a0(980)a_0(980) and ρ(770)±\rho(770)^{\pm} resonances.

R. R. Akhmetshin, A. N. Amirkhanov, A. V. Anisenkova, V. M. Aulchenkoa, N. S. Bashtovoy, E. V. Bedarev, D. E. Berkaev, A (…)2026-07-14
⚛️ phenomenology

Multi-scale improved predictions for pp→ttˉW++X\boldsymbol{pp \to t\bar{t}W^+ +X}

This paper presents a comparison between standard fixed-order NLO QCD predictions and the MiNLO approach for the full off-shell pp→ttˉW++Xpp \to t\bar{t}W^+ + X process at 13 TeV, demonstrating how the MiNLO method's dynamic scale setting and Sudakov form factors improve the description of multi-lepton final states through the merging of zero-, one-, and two-jet configurations.

Nikolaos Dimitrakopoulos, Malgorzata Worek2026-07-14
⚛️ high-energy experiments

Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at s\sqrt{s} = 13 TeV

This paper presents a search for a new neutral gauge boson (Z') produced in association with one or two b jets and decaying into a pair of muons using 138 fb−1^{-1} of 13 TeV proton-proton collision data from the CMS detector, finding no significant deviation from background expectations and setting the most stringent limits to date in the 125–350 GeV mass range.

CMS Collaboration2026-07-13