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

Jet-associated Balance Functions of Charged and Identified Hadrons in pp Collisions at s=13.6\sqrt{s}=13.6 TeV using PYTHIA8

This study utilizes PYTHIA8 to analyze charge balance functions of identified hadrons in high-multiplicity jets at s=13.6\sqrt{s}=13.6 TeV, revealing a narrowing balancing width and species-dependent dynamics that suggest multiparton interactions and color reconnection can generate collective-like features within small systems.

Subash Chandra Behera, Arvind Khuntia2026-02-04
⚛️ high-energy experiments

Probing 0νββ0νββ and μ→eγμ\to eγ via Fully Determined Dirac Mass Terms in LRSM with Double Seesaw

This paper investigates the phenomenological implications of a Left-Right Symmetric Model extended with a double type-I seesaw mechanism, demonstrating how fully determined Dirac mass textures can enhance right-handed neutrino contributions to neutrinoless double beta decay and the charged lepton flavor violation process μ→eγ\mu \to e\gamma within parameter spaces accessible to current and future experiments.

Pratik Adarsh, Rajrupa Banerjee, Purushottam Sahu, Utkarsh Patel, Sudhanwa Patra2026-02-03
⚛️ high-energy experiments

Investigating nuclear effects in lepton-ion DIS at the LHC

This paper investigates the impact of nuclear effects on muon- and neutrino-tungsten deep inelastic scattering events at the LHC's FASERν\nu and FASERν2\nu2 experiments, demonstrating that a simultaneous analysis of inclusive and charm-tagged events can test the universality of nuclear effects and reduce uncertainties in parton distribution functions.

Reinaldo Francener, Victor P. Goncalves, Diego R. Gratieri2026-02-03
⚛️ high-energy experiments

Development of a comprehensive PMT optical model for the JUNO experiment

This study establishes a comprehensive, individualized optical model for the 17,612 PMTs in the JUNO experiment by integrating mass testing and reflectance data to map photocathode and anti-reflective coating thicknesses, thereby refining detector simulations and energy response accuracy beyond previous uniform assumptions.

Y. Ren, X. Yang, Y. Wang, Z. Deng, Z. Qin, A. Olshevskiy, W. Wang, N. Anfimov, Z. Wang, G. Cao2026-02-03
⚛️ high-energy experiments

Summary of the Precision Measurements of the Electroweak Mixing Angle in the Region of the Z pole

This paper presents an improved extraction of the effective leptonic weak mixing angle, sin⁡2θeffℓ=0.23156±0.00024\sin^2\theta^\ell_{\mathrm{eff}} = 0.23156\pm0.00024, by incorporating complementary CMS measurements to constrain parton distribution functions, resulting in the most precise single determination of this parameter to date that is consistent with the Standard Model.

Arie Bodek, Hyon-San Seo, Un-Ki Yang2026-02-03
⚛️ high-energy experiments

Looking forward to B+→τ+ντB^+\to τ^+ ν_τ and Bc+→τ+ντB_c^+\to τ^+ ν_τ

This paper presents a RapidSim feasibility study demonstrating that the LHCb experiment can observe the decays B+→τ+ντB^+\to \tau^+ \nu_\tau and Bc+→τ+ντB_c^+\to \tau^+ \nu_\tau during Run 3 by utilizing direct pixel hits from its VELO detector to overcome missing momentum and vertex limitations, thereby enabling early experimental constraints on these key channels without waiting for next-generation accelerators.

Maria Domenica Galati, Kristof De Bruyn, Mick Mulder, Maarten van Veghel2026-02-03
⚛️ high-energy experiments

Interpretation of Υ(11020)Υ(11020) as an SS-Wave B1BˉB_1\bar{B}--B1Bˉ∗B_1\bar{B}^* Molecular State

This paper proposes that the Υ(11020)\Upsilon(11020) resonance is an SS-wave B1BˉB_1\bar{B}--B1Bˉ∗B_1\bar{B}^* molecular state and supports this hypothesis by calculating its strong decay widths, which reveal a dominant Bs∗Bˉ∗B_s^*\bar{B}^* channel and distinctive patterns in multi-pion transitions that serve as experimental signatures for heavy-quark symmetry.

Qing Lu, Cai Cheng, Yin Huang2026-02-03