⚛️ Category

hep-ex

1495 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.

Search for resonances decaying to an anomalous jet and a Higgs boson in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 138 fb−1^{-1} of proton-proton collision data at 13 TeV collected by the CMS experiment, this study presents a search for new resonances decaying into a Higgs boson and an anomalous jet identified via an autoencoder, finding no significant excess over Standard Model background and setting the most stringent upper limits to date on the production cross sections for various benchmark scenarios.

CMS Collaboration2026-02-13⚛️ hep-ex

Studies of beauty hadron and non-prompt charm hadron production in pp collisions at s\sqrt{s}=13 TeV within a transport model approach

This study employs a refined AMPT transport model with adjusted beauty quark mass and flavor-specific coalescence parameters to successfully reproduce LHCb and ALICE data on beauty and non-prompt charm hadron production in 13 TeV $pp$ collisions, offering new insights into heavy quark dynamics and hadronization mechanisms in small collision systems.

Jialin He, Xinye Peng, Xiaoming Zhang, Liang Zheng2026-02-13⚛️ hep-ex

Nucleon Parton Distribution Functions from Boosted Correlations in the Coulomb gauge

This study presents the first exploratory lattice QCD calculation of nucleon unpolarized, helicity, and transversity parton distribution functions using boosted correlators in the Coulomb gauge, demonstrating that the method yields results compatible with global analyses for valence-quark distributions while highlighting the need to address excited-state contamination in full-quark-channel extractions.

Xiang Gao, Jinchen He, Joshua Lin, Swagato Mukherjee, Peter Petreczky, Rui Zhang, Yong Zhao2026-02-13⚛️ nucl-ex

Triple Differential Heavy-to-light Semi-leptonic Decays at Next-to-Next-to-Next-to-Leading Order in QCD

This paper presents the first complete next-to-next-to-next-to-leading order QCD calculation of heavy-to-light semi-leptonic decay structure functions, enabling precision predictions for triple differential rates that are crucial for determining CKM matrix elements and resolving tensions in ∣Vub∣|V_{ub}| measurements.

Long Chen, Xiang Chen, Xin Guan, Yan-Qing Ma2026-02-13⚛️ hep-ex

Performance and pulse shape discrimination of glass scintillator SG101 for neutron detection

This paper demonstrates that the glass scintillator SG101 is a promising candidate for high-efficiency thermal neutron detection and precise event tagging, exhibiting superior pulse shape discrimination performance and significant physical correlations when coupled with organic scintillators like EJ200 and EJ276.

Yuhang Liu, Fengpeng An, Guang Luo, Wei Wang, Wei Wei, Xuesong Zhang, Dixiao Lu, Xiaohao Yin2026-02-13⚛️ hep-ex

Beyond One-Thousandth Energy Resolution with an AlMn TES Detector

The authors report the first successful demonstration of an annular AlMn Transition-Edge Sensor (TES) for X-ray detection, achieving a record-breaking energy resolution of 12.1 eV at 17.48 keV (below 0.1%), thereby validating AlMn alloys as a promising alternative to traditional bilayer TESs for high-resolution X-ray spectrometry.

Liangpeng Xie, Yifei Zhang, Zhengwei Li, Zhouhui Liu, Shibo Shu, Junjie Zhou, Xufang Li, Haoyu Li, He Gao, Yudong Gu, Xuefeng Lu, Yong Zhao, Congzhan Liu2026-02-13⚛️ hep-ex

Heavy-to-light Structure Functions at O(αs3)\mathcal{O}(α_s^3) in QCD

This paper presents the first complete O(αs3)\mathcal{O}(\alpha_s^3) perturbative QCD corrections to heavy-to-light structure functions using a hybrid computational strategy, providing state-of-the-art predictions for semi-leptonic BB-meson decays and revealing novel boundary-effect terms essential for consistent mass-scheme reformulations at third order.

Long Chen, Xiang Chen, Xin Guan, Yan-Qing Ma2026-02-13⚛️ hep-ex