⚛️ Category

hep-ex

2160 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 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
⚛️ high-energy experiments

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. A (…)2026-03-04
⚛️ nuclear experiments

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. Kirc (…)2026-03-04
⚛️ nuclear experiments

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
⚛️ phenomenology

Electroweak Higgs boson pair production: Updated inclusive cross sections

This paper presents updated inclusive cross sections for electroweak Higgs boson pair production at LHC-relevant energies, calculated at N3^3LO QCD+NLO EW for vector-boson fusion and NNLO QCD for associate production, covering both Standard Model predictions and scenarios with anomalous trilinear Higgs self-couplings.

Ramona Gröber, Alexander Karlberg, Mathieu Pellen, Gioia Sacchi, Michael Spira2026-03-04