hep-ex papers | Gist.Science

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.

⚛️ nuclear experiments

Measurements of the production of W $^{\pm}$ and Z $^0$ bosons in pp collisions at $\sqrt{s} = 13$ TeV

This paper presents ALICE measurements of W $^{\pm}$ and Z $^0$ boson production cross sections in pp collisions at $\sqrt{s} = 13$ TeV via their electronic decay channels, comparing the results with perturbative QCD calculations and reporting the first LHC observation of W $^{\pm}$ production and associated hadrons as a function of charged-particle multiplicity.

ALICE Collaboration2026-02-27

⚛️ nuclear experiments

Understanding the impact of nuclear effects on proton decay searches with the GiBUU model

This study utilizes the GiBUU framework to demonstrate that while pion final-state interactions have a moderate impact on proton decay search sensitivity in water Cherenkov detectors, the choice of Fermi momentum distribution constitutes the dominant systematic uncertainty affecting atmospheric neutrino background estimates.

Qiyu Yan, Akira Takenaka, Kai Gallmeister, Xianguo Lu, Ulrich Mosel, Yangheng Zheng2026-02-27

⚛️ high-energy experiments

Finding Unexpected Non-Helical Tracks

This paper presents a model-agnostic tracking algorithm capable of reconstructing a broad class of smooth, non-helical particle trajectories without prior specification, thereby enabling the discovery of unexpected physics signatures that standard helix-based algorithms miss.

Levi Condren, Daniel Whiteson2026-02-26

⚛️ high-energy experiments

First measurements of the branching fractions for the decay modes $Ξ_c^{0} \to Λη$ and $Ξ_c^0 \to Λη'$ and search for the decay $Ξ_c^{0} \to Λπ^0$ using Belle and Belle II data

Using combined Belle and Belle II data, this study presents the first observation of the decay $\Xi_c^0 \to \Lambda\eta$ , provides evidence for $\Xi_c^0 \to \Lambda\eta'$ , and sets an upper limit for $\Xi_c^0 \to \Lambda\pi^0$ , thereby determining their absolute branching fractions and advancing the understanding of singly Cabibbo-suppressed charm baryon decay mechanisms.

Belle, Belle II Collaborations, :, M. Abumusabh, I. Adachi, L. Aggarwal, H. Ahmed, Y. Ahn, H. Aihara, N. Akopov, S. Algh (…)2026-02-26

⚛️ nuclear experiments

Opportunities for Imaging Light Nuclei with a Second Interaction Region at the Electron-Ion Collider

This paper presents an exploratory study demonstrating how a proposed second interaction region at the Electron-Ion Collider, featuring enhanced forward acceptance, would enable the detection of intact light nuclei to map their spatial parton distributions through coherent diffractive processes.

Wan Chang, Elke-Caroline Aschenauer, Alexander Jentsch, Arjun Kumar, Zhoudunming Tu, Zhongbao Yin2026-02-26

⚛️ high-energy experiments

Parton distributions with higher twist and jet power corrections

This paper presents a global determination of parton distribution functions that incorporates higher twist corrections for deep-inelastic scattering and linear power corrections for LHC jet data using a theory covariance formalism, demonstrating improved data description and perturbative convergence for key phenomenological observables like Higgs production and $\alpha_s$ determination.

Richard D. Ball, Amedeo Chiefa, Roy Stegeman2026-02-26

⚛️ nuclear theory

Unified study of $B_s^0 \to X(3872) π^+π^- (K^+ K^-)$ and $B_s^0 \to ψ(2S) π^+π^- (K^+ K^-)$ processes

This paper presents a unified theoretical description of experimental data for $B_s^0$ decays into $X(3872)$ and $\psi(2S)$ accompanied by pion or kaon pairs, utilizing unitary and analytic final-state interactions to reveal universal coupling patterns, a distinct non-charmonium nature for the $X(3872)$ , and the significant role of the $f_0(1500)$ resonance while predicting related branching fraction ratios and invariant mass distributions.

Yun-Hua Chen2026-02-26

⚛️ nuclear experiments

Near-Threshold J/ $ψ\to μ^+μ^-$ Photoproduction and the Gluonic Gravitational Form Factors of the Proton

This paper reports the measurement of near-threshold $J/\psi \to \mu^+\mu^-$ photoproduction cross sections from the J/ $\psi$ -007 experiment at Jefferson Lab, which, when combined with electron decay data and analyzed via Holographic QCD, yields precise constraints on the proton's gluonic gravitational form factor $\mathcal{C}_g(t)$ that agree with lattice QCD calculations and support a spatial picture of gluon dominance at larger radii with confining inward pressure.

007 Collaboration, S. Joosten, Z. -E. Meziani, S. Prasad, J. Swartz, B. Duran, M. K. Jones, H. Klest, M. Paolone, C. Pen (…)2026-02-26

⚛️ high-energy experiments

Coherent Quantum Evaluation of Collider Amplitudes for Effective Field Theory Constraints

This paper presents a hybrid quantum-classical framework that computes leading-order helicity amplitudes for $e^+e^-\to \ell^+\ell^-$ scattering on gate-based quantum hardware to derive Standard Model and Effective Field Theory constraints consistent with precision collider data.

Yacine Haddad, Kaidi Xu, Vincent Croft, Jad C. Halimeh, Michele Grossi2026-02-26

⚛️ high-energy experiments

Neutrinos as a new tool to characterise the Milky Way Centre

This paper proposes that future neutrino telescopes will utilize neutrinos as a robust, low-uncertainty mass tracer for the Milky Way's Central Molecular Zone, thereby refining star-formation models and improving gas measurements in distant galaxies.

Paul C. W. Lai, Beatrice Crudele, Matteo Agostini, Hayden P. H. Ng, Ellis R. Owen, Nishta Varma, Kinwah Wu2026-02-25

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hep-ex

Measurements of the production of W±^{\pm}± and Z0^00 bosons in pp collisions at s=13\sqrt{s} = 13s​=13 TeV

Understanding the impact of nuclear effects on proton decay searches with the GiBUU model

Finding Unexpected Non-Helical Tracks

First measurements of the branching fractions for the decay modes Ξc0→ΛηΞ_c^{0} \to ΛηΞc0​→Λη and Ξc0→Λη′Ξ_c^0 \to Λη'Ξc0​→Λη′ and search for the decay Ξc0→Λπ0Ξ_c^{0} \to Λπ^0Ξc0​→Λπ0 using Belle and Belle II data

Opportunities for Imaging Light Nuclei with a Second Interaction Region at the Electron-Ion Collider

Parton distributions with higher twist and jet power corrections

Unified study of Bs0→X(3872)π+π−(K+K−)B_s^0 \to X(3872) π^+π^- (K^+ K^-)Bs0​→X(3872)π+π−(K+K−) and Bs0→ψ(2S)π+π−(K+K−)B_s^0 \to ψ(2S) π^+π^- (K^+ K^-)Bs0​→ψ(2S)π+π−(K+K−) processes

Near-Threshold J/ψ→μ+μ−ψ\to μ^+μ^-ψ→μ+μ− Photoproduction and the Gluonic Gravitational Form Factors of the Proton

Coherent Quantum Evaluation of Collider Amplitudes for Effective Field Theory Constraints

Neutrinos as a new tool to characterise the Milky Way Centre

Measurements of the production of W $^{\pm}$ and Z $^0$ bosons in pp collisions at $\sqrt{s} = 13$ TeV

First measurements of the branching fractions for the decay modes $Ξ_c^{0} \to Λη$ and $Ξ_c^0 \to Λη'$ and search for the decay $Ξ_c^{0} \to Λπ^0$ using Belle and Belle II data

Unified study of $B_s^0 \to X(3872) π^+π^- (K^+ K^-)$ and $B_s^0 \to ψ(2S) π^+π^- (K^+ K^-)$ processes

Near-Threshold J/ $ψ\to μ^+μ^-$ Photoproduction and the Gluonic Gravitational Form Factors of the Proton