⚛️ Category

hep-ex

1434 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 nonresonant new physics signals in high-mass dilepton events produced in association with b-tagged jets in proton-proton collisions at s\sqrt{s} = 13 TeV

Using 138 fb−1^{-1} of proton-proton collision data at 13 TeV, the CMS experiment performed a search for nonresonant new physics in high-mass dilepton events associated with b-tagged jets, finding no significant deviations from the Standard Model and setting lower limits on the energy scale of effective field theory operators involving four-fermion contact interactions.

CMS Collaboration2026-03-04⚛️ hep-ex

Development of a simulation and analysis framework for NνDEx experiment

This paper presents a comprehensive simulation and analysis framework for the Nν\nuDEx experiment that integrates theoretical ion mobility calculations, detailed detector modeling, and advanced machine learning techniques to validate the experimental workflow and optimize signal-background separation for neutrinoless double beta decay searches.

Tianyu Liang, Hulin Wang, Dongliang Zhang, Chaosong Gao, Xiangming Sun, Feng Liu, Jun Liu, Chengui Lu, Yichen Yang, Chengxin Zhao, Hao Qiu, Kai Chen2026-03-04⚛️ hep-ex

Measurement of C ⁣PC\!P asymmetry in D0→KS0KS0D^0 \to K^0_{\rm S} K^0_{\rm S} decays with Run 3 data

Using 2024 LHCb Run 3 proton-proton collision data, this paper reports the most precise single-experiment measurement of the time-integrated C ⁣PC\!P asymmetry in D0→KS0KS0D^0 \to K^0_{\rm S} K^0_{\rm S} decays to date, yielding a value of (1.86±1.04±0.41)%(1.86 \pm 1.04\pm 0.41)\%.

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. A. Aidala, Z. Ajaltouni, S. A (…)2026-03-04⚛️ hep-ex

Beam-Beam Backgrounds for the Cool Copper Collider

This paper presents a comprehensive simulation-based characterization of beam-beam backgrounds for the proposed Cool Copper Collider (C3^3) using the Key4hep framework, demonstrating that the existing SiD detector design remains compatible with all operating scenarios without substantial modifications while establishing a versatile toolkit for future collider background studies.

Dimitrios Ntounis, Laith Gordon, Lindsey Gray, Elias Mettner, Tim Barklow, Emilio A. Nanni, Caterina Vernieri2026-03-04⚛️ hep-ex

New high-sensitivity search for neutron to mirror-neutron oscillations at the PSI UCN source

A high-sensitivity search for neutron-to-mirror-neutron oscillations conducted at the PSI UCN source found no evidence of anomalous neutron losses, thereby excluding 99.98% of the previously claimed parameter space and establishing new limits on the oscillation time constant.

N. J. Ayres, Z. Berezhiani, G. Bison, K. Bodek, V. Bondar, P. -J. Chiu, M. Daum, C. B. Doorenbos, S. Emmenegger, K. Kirch, V. Kletzl, J. Krempel, B. Lauss, D. Pais, I. Rienäcker, D. Ries, D. Rozpedzik (…)2026-03-04⚛️ nucl-ex

Continual Learning via Ensemble-Based Depth-Wise Masked Autoencoders for Data Quality Monitoring in High-Energy Physics

This paper introduces DepthViT, a lightweight masked autoencoder combined with an ensemble-based continual learning framework, to achieve robust and precise anomaly detection for data quality monitoring in High-Energy Physics by effectively adapting to distributional shifts in dynamic data streams.

Dale Julson, Eric Reinhardt, Andrii Krutsylo, Resham Sohal, Guillermo Fidalgo, Sergei Gleyzer, Emanuele Usai, The CMS HCAL Collaboration2026-03-04⚛️ hep-ex

Internal Charge Amplification in Germanium at 77K and 4K: From Single-Free-Flight Bounds to a Physics-Informed Ionization Model

This paper presents a unified, physics-informed framework for predicting the critical electric field required for internal charge amplification in cryogenic germanium at 77 K and 4 K, bridging single-free-flight bounds with detailed scattering mechanisms to provide closed-form design formulas and a practical calibration workflow for optimizing detector performance.

Dongming Mei, Kunming Dong, Narayan Budhathoki, Shasika Panamaldeniya, Francisco Ponce2026-03-04⚛️ nucl-ex