⚛️ Category

hep-ex

2610 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

Reinterpretation of searches for supersymmetry in models with variable R-parity-violating coupling strength using the full ATLAS Run 2 Dataset

Using the full ATLAS Run 2 dataset of 140 fb−1^{-1} at 13 TeV, this study reinterprets thirteen supersymmetry searches to set comprehensive 95% confidence level mass limits on gluinos, top squarks, tau-sleptons, and charginos/neutralinos across a broad spectrum of R-parity-violating coupling strengths, thereby bridging the gap between prompt and long-lived particle signatures.

The ATLAS Collaboration2026-03-17
⚛️ high-energy experiments

b→cb \to c semileptonic sum rule: exploring a sterile neutrino loophole

This paper investigates whether a massive sterile neutrino could explain the discrepancy between BB-meson and Λb\Lambda_b-baryon decay anomalies by revisiting the b→cb \to c semileptonic sum rule, concluding that the induced effects are too small to resolve the tension and thus the sum rule remains a robust consistency check for experimental data.

Motoi Endo, Syuhei Iguro, Tim Kretz, Satoshi Mishima2026-03-17
⚛️ high-energy experiments

Design and operation of a spark chamber for vacuum ultraviolet light production

This paper presents the design and room-temperature operational results of a spark chamber prototype equipped with a flash lamp, intended to generate vacuum ultraviolet light for testing precision sensors used in noble liquid detectors for dark matter and neutrino physics.

Silas Bosco, Jonas Bürgi, Livio Calivers, Richard Diurba, Johannes Furrer, Jan Kunzmann, Saba Parsa, Sascha Rivera, Nico (…)2026-03-17
⚛️ high-energy experiments

The Deconstruction of Flavor in the Privately Democratic Higgs Sector

This paper proposes a model utilizing vector-like quarks and scalar messengers with hierarchical vacuum expectation values to explain the quark mass hierarchy and generate the CKM matrix independently of fermion masses, thereby addressing the Standard Model's inability to account for flavor structure.

Bhubanjyoti Bhattacharya (Lawrence Technological University), Suneth Jayawardana (Wayne State University), Nausheen R. S (…)2026-03-16
⚛️ high-energy experiments

Kink Finder at Belle II

This paper introduces the "Kink Finder," a specialized track-finding algorithm for the Belle II experiment that significantly outperforms standard methods by achieving a 40% reconstruction efficiency for in-flight particle decays and scattering, while also improving track parameter resolution and reducing misidentification rates.

Denis Bodrov, Xinping Xu, Dmitrii Gavrilov, Pavel Pakhlov, Valerio Bertacchi, Tadeas Bilka, Arkodip Biswas, Giulia Casar (…)2026-03-16
⚛️ high-energy experiments

Scrutinizing the KNT model with vacuum stability conditions

This paper demonstrates that while the Krauss-Nasri-Trodden (KNT) model can satisfy low-energy experimental constraints, a significant portion of its viable parameter space is ruled out by vacuum stability conditions when renormalization group effects are considered, leaving most of the remaining region testable through future charged lepton flavor violating experiments.

Tim Huesmann, Michael Klasen, Vishnu P. K2026-03-16
⚛️ high-energy experiments

Measurement of the local and nonlocal amplitudes in B+→K+μ+μ−B^{+}\to K^{+}\mu^{+}\mu^{-} decays

Using 8.4 fb−1^{-1} of LHCb data, this study performs an amplitude analysis of the B+→K+μ+μ−B^{+}\to K^{+}\mu^{+}\mu^{-} decay to simultaneously determine local and nonlocal amplitudes across the full dimuon mass spectrum, revealing that the compatibility of Wilson coefficient combinations with the Standard Model varies between 1.6σ\sigma and 4σ\sigma depending on the chosen form factors.

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. A (…)2026-03-16