⚛️ Category

hep-ex

2609 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

Measurements of ttW differential cross sections and the leptonic charge asymmetry 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 experiment, this paper presents measurements of differential cross sections and the leptonic charge asymmetry for top quark-antiquark pair production in association with a W boson, finding that normalized distributions agree with Standard Model predictions while absolute cross sections are slightly higher, consistent with previous inclusive results.

CMS Collaboration2026-03-25
⚛️ high-energy experiments

Constraining the Higgs potential using multi-Higgs production

This paper summarizes the current status of next-to-leading-order electroweak corrections to double-Higgs production within Standard Model and Higgs Effective Field Theory frameworks, highlighting how these calculations enhance sensitivity to Higgs self-couplings and provide complementary constraints on the Higgs potential for future collider experiments.

Jia-Le Ding, Zach Gillis, Ulrich Haisch, Brian Moser, Hai Tao Li, Davide Pagani, Luca Rottoli, Ambresh Shivaji, Zong-Guo (…)2026-03-25
⚛️ high-energy experiments

Probing unexplored spin-dependent dark matter-proton coupling with few-photoelectron threshold in COSINE-100

The COSINE-100 experiment reports world-leading constraints on spin-dependent dark matter-proton scattering in the 1.75–2.25 GeV/c² mass range and sets new sub-GeV limits via the Migdal effect by achieving a record-low detection threshold of 3–4 photoelectrons, despite observing no statistically significant annual modulation signal.

W. K. Kim, N. Carlin, J. Y. Cho, S. J. Cho, S. Choi, A. C. Ezeribe, L. E. França, R. F. Muhdi, O. Gileva, C. Ha, I. S. H (…)2026-03-25
⚛️ high-energy experiments

Measurement and interpretation of inclusive WγW\gamma production in proton-proton collisions at s=13\sqrt{s}=13 TeV using the ATLAS detector

Using 140 fb−1^{-1} of proton-proton collision data at s=13\sqrt{s}=13 TeV, the ATLAS experiment presents precise differential cross-section measurements for inclusive WγW\gamma production to test Standard Model predictions, constrain parton distribution functions, and set improved limits on anomalous weak-boson self-interactions within an effective field theory framework.

ATLAS Collaboration2026-03-25
⚛️ high-energy experiments

Search for the radiative decays D0→γKˉ1(1270)0D^0\to \gamma \bar K_1(1270)^0 and D+→γK1(1270)+D^+\to \gamma K_1(1270)^+

Using 20.3 fb⁻¹ of data collected by the BESIII detector, a search for the radiative decays D0→γKˉ1(1270)0D^0\to \gamma \bar K_1(1270)^0 and D+→γK1(1270)+D^+\to \gamma K_1(1270)^+ yielded no significant signals, resulting in the first experimental upper limits on their branching fractions and providing the first test of the Vector Meson Dominance mechanism in these charmed meson decays.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai, O. Bakin (…)2026-03-25
⚛️ high-energy experiments

Amplitude Analysis of the Isospin-Violating Decay J/ψ→γηπ0J/\psi\rightarrow\gamma\eta\pi^{0}

Using a large sample of J/ψJ/\psi events collected by the BESIII detector, this study presents the first amplitude analysis of the isospin-violating decay J/ψ→γηπ0J/\psi\to\gamma\eta\pi^0, identifying dominant intermediate processes and achieving the first observation of radiative transitions to isospin-triplet scalar mesons a0(980)0a_0(980)^0, a2(1320)0a_2(1320)^0, and a2(1700)0a_2(1700)^0 with a significantly improved measurement of the total branching fraction.

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai, C. S. Akondi, R. Aliberti, A. Amoroso, Q. An, Y. (…)2026-03-25
⚛️ nuclear experiments

KATRIN Sensitivity to keV Sterile Neutrinos with the TRISTAN Detector Upgrade

This paper presents projected sensitivity estimates showing that the KATRIN experiment, utilizing its upcoming TRISTAN detector upgrade, will be capable of probing keV-scale sterile neutrino mixing amplitudes down to ∣Ue4∣2∼10−6|U_{e4}|^2 \sim 10^{-6} for masses between 4 and 13 keV, significantly extending the reach of previous laboratory searches despite potential systematic uncertainties.

H. Acharya, M. Aker, D. Batzler, A. Beglarian, J. Beisenkötter, M. Biassoni, B. Bieringer, Y. Biondi, B. Bornschein, L. (…)2026-03-25
⚛️ high-energy experiments

Resonant Parameters of Vector Charmonium-like States above 4.4 GeV

This paper presents a simultaneous fit to BESIII cross-section data for various charmonium-like final states above 4.4 GeV, determining the resonant parameters of four structures (ψ(4230)\psi(4230), ψ(4500)\psi(4500), ψ(4660)\psi(4660), and ψ(4710)\psi(4710)) and finding that the ψ(4660)\psi(4660) and ψ(4710)\psi(4710) dominantly drive the production of Ds+Ds1∗−(2536)D_s^{+}D_{s1}^{*-}(2536), Ds+Ds2∗−(2573)D_s^{+}D_{s2}^{*-}(2573), and ϕχc1,2\phi\chi_{c1,2} channels.

Chunhua Li, Wanting Liu, Linfa Tang, Ying Ding2026-03-25