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

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

⚛️ high-energy experiments

Letter Of Intent for a future $μ^+ \to \mathrm{e}^+ γ$ experiment at the High Intensity Muon Beam facility at PSI

This Letter of Intent outlines a proposal to develop a future $\mu^+ \to \mathrm{e}^+ \gamma$ experiment at the High-Intensity Muon Beam facility at PSI, aiming to improve current sensitivity by over an order of magnitude within the next decade to maintain leadership in searching for charged lepton flavor violation.

Paolo Walter Cattaneo, Wataru Ootani, Francesco Renga, André Schöning, Heiko Augustin, Haris Avudaiyappan, Sei Ban, Paol (…)2026-02-25

⚛️ high-energy experiments

Characterizing Dark Bosons at Chiral Belle

This paper investigates how a polarized electron beam at the proposed "Chiral Belle" upgrade of Belle II can distinguish the spin and Lorentz structure of invisibly decaying dark bosons by analyzing the polarization dependence of the mono-photon production channel ( $e^+ e^- \rightarrow \gamma + \text{invisible}$ ).

Carlos Henrique de Lima, David McKeen, Afif Omar, Douglas Tuckler2026-02-25

⚛️ high-energy experiments

Boosting VBF Reconstruction at Muon Colliders

This paper proposes using asymmetric beam energies at muon colliders to boost forward muons into detector acceptance, thereby overcoming shielding limitations and improving the reconstruction of vector boson fusion processes like VBF Higgs production.

Carlos Henrique de Lima2026-02-25

⚛️ high-energy experiments

Rare few-body decays of the Standard Model Higgs boson

This paper surveys approximately 70 rare and exclusive few-body Standard Model Higgs boson decays with branching fractions below $10^{-5}$ , providing theoretical predictions, current experimental limits, and HL-LHC projections—including 20 newly computed channels—to guide future research in constraining couplings, probing flavor-changing processes, and estimating backgrounds for exotic physics.

David d'Enterria, Van Dung Le2026-02-25

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hep-ex

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

Letter Of Intent for a future μ+→e+γμ^+ \to \mathrm{e}^+ γμ+→e+γ experiment at the High Intensity Muon Beam facility at PSI

Characterizing Dark Bosons at Chiral Belle

Boosting VBF Reconstruction at Muon Colliders

Rare few-body decays of the Standard Model Higgs boson

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

Letter Of Intent for a future $μ^+ \to \mathrm{e}^+ γ$ experiment at the High Intensity Muon Beam facility at PSI