⚛️ Category

hep-ex

2131 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 the nonresonant production of a pair of additional Higgs bosons in the Type-X two-Higgs-doublet model in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 138 fb−1^{-1} of proton-proton collision data at s\sqrt{s} = 13 TeV collected by the CMS detector, this study found no evidence for the nonresonant production of a pair of additional Higgs bosons decaying to τ\tau lepton pairs, thereby ruling out the Type-X two-Higgs-doublet model alignment scenario as an explanation for the muon anomalous magnetic moment tension.

CMS Collaboration2026-05-19
⚛️ phenomenology

Higgs Physics with the XFEL Compton γγ\boldsymbol{\gamma\gamma} Collider Concept at s=125\boldsymbol{\sqrt{s}=125} GeV

This paper investigates single Higgs production at a 125 GeV XFEL Compton γγ\gamma\gamma collider, demonstrating that a novel deep learning framework combined with a genetic algorithm can achieve significantly higher sensitivity in signal-background discrimination than traditional methods, thereby enabling precise Higgs sector probing and new physics opportunities complementary to proposed e+e−e^+e^- machines.

Umar Sohail Qureshi, Tim Barklow, Ariel Schwartzman2026-05-19
⚛️ high-energy experiments

Global Fit of KamLAND Data and the Daya Bay Antineutrino Energy Spectrum

This paper presents a global analysis combining KamLAND data with Daya Bay's independently measured fission antineutrino spectra, revealing that using these empirical spectra instead of the Huber-Müller model reduces the tension between KamLAND's and JUNO's measurements of solar neutrino oscillation parameters by lowering the best-fit values of Δm212\Delta m^2_{21} and tan⁡2θ12\tan^2\theta_{12}.

Guihong Huang2026-05-19
⚛️ high-energy experiments

Observation of ηc(1S)→Σ0Σˉ0\eta_c(1S)\to \Sigma^0\bar \Sigma^0 and search for hc(1P)→Σ0Σˉ0h_c(1P)\to \Sigma^0\bar \Sigma^0 via ψ(3686)\psi(3686) transitions

Using a large sample of ψ(3686)\psi(3686) events collected by the BESIII detector, this study reports the first observation of the decay ηc(1S)→Σ0Σˉ0\eta_c(1S)\to\Sigma^0\bar{\Sigma}^0 with branching fractions determined under different interference scenarios, while setting an upper limit on the unobserved decay hc(1P)→Σ0Σˉ0h_c(1P)\to\Sigma^0\bar{\Sigma}^0.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, Q. An, Y. (…)2026-05-19
⚛️ high-energy experiments

Implementation of a Low-Temperature Monitoring and Alarm System for the Taishan Neutrino Experiment

This paper describes the development and successful six-month operation of an EPICS-based low-temperature monitoring and alarm system for the Taishan Antineutrino Observatory, which utilizes PT100 sensors and multi-level thresholds to ensure the safe and stable operation of the detector by tracking liquid scintillator temperatures.

Shengheng Huang, Mei Ye, Guihong Huang, Yichen Li, Zhimin Wang, Xiaohao Yin, Guang Luo, Fengpeng An, Jiahao Zhang2026-05-19
⚛️ high-energy experiments

ML-based Fast Simulation of FARICH Responses

This paper presents a lightweight conditional Generative Adversarial Network (cGAN) that significantly accelerates the simulation of FARICH detector responses by generating realistic photon hit samples conditioned on particle tracks and momentum, outperforming traditional Monte-Carlo methods in speed while maintaining accuracy.

Foma Shipilov, Alexander Barnyakov, Vladimir Bobrovnikov, Artem Ivanov, Sergey Kononov, Fedor Ratnikov2026-05-19
⚛️ high-energy experiments

Flavour Changing Neutral Current decays at LHCb

This paper summarizes recent LHCb results on Flavour Changing Neutral Current decays, including a legacy measurement of B0→K∗0μ+μ−B^0\to K^{*0}\mu^+\mu^- using 8.4 fb−1^{-1} of Run 1 and 2 data, to search for New Physics and investigate long-standing tensions with Standard Model predictions in b→sμ+μ−b\to s\mu^+\mu^- transitions.

Christoph Langenbruch (for the LHCb collaboration)2026-05-19