⚛️ Category

hep-ex

2101 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

Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at s\sqrt{s} = 13 TeV

This paper presents a search for a new neutral gauge boson (Z') produced in association with one or two b jets and decaying into a pair of muons using 138 fb−1^{-1} of 13 TeV proton-proton collision data from the CMS detector, finding no significant deviation from background expectations and setting the most stringent limits to date in the 125–350 GeV mass range.

CMS Collaboration2026-07-13
⚛️ phenomenology

Dark Matter implications from the LZ, PandaX-4T and XENONnT Data

Using a unified framework to analyze combined data from LZ, PandaX-4T, and XENONnT, this study suggests that velocity-dependent or inelastic dark matter interactions could explain high-energy nuclear-recoil-like events with up to 3.5σ significance, though these findings are highly sensitive to uncertainties in 124^{124}Xe double electron capture backgrounds.

Haipeng An, Fei Gao, Jia Liu, Minghao Liu, Haoming Nie, Changlong Xu2026-07-13
⚛️ high-energy experiments

Comprehensive analysis of the B0→K∗0μ+μ−B^0\to K^{*0}\mu^+\mu^- decay

Using 8.4 fb−1^{-1} of LHCb proton-proton collision data, this paper presents a comprehensive analysis of the B0→K∗0μ+μ−B^0\to K^{*0}\mu^+\mu^- decay that includes the first full set of S-wave observables and muon mass effects, confirming that the measured CPCP-averaged observables and branching fractions continue to exhibit tensions with Standard Model predictions.

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. A (…)2026-07-13
⚛️ high-energy experiments

Flow-Based Surrogates for High-Dimensional Likelihoods in Experimental Neutrino Physics

This paper demonstrates that a hybrid normalizing flow architecture can effectively model high-dimensional, non-Gaussian likelihoods in neutrino physics, achieving near-perfect sampling efficiency compared to Gaussian approximations while remaining closed-form and portable for downstream uncertainty propagation.

Mathias El Baz, Lorenzo Giannessi, Adrien Blanchet, Federico Sánchez2026-07-13
⚛️ phenomenology

High Energy Photon Polarimetry at Lepton Colliders: Quantum Information from Converted Photons

This paper proposes using high-energy photons that convert into electron-positron pairs within the Belle-II detector at lepton colliders to measure quantum information observables, demonstrating that single and double conversion processes can significantly probe phenomena such as Bell inequality violations, quantum discord, and steerability in GeV-scale diphoton systems.

Carlos Henrique de Lima, Navin McGinnis, David McKeen2026-07-13
⚛️ lattice

Renormalon subtracted nonrelativistic QCD for heavy hadron systems

This paper presents a renormalon-subtracted potential nonrelativistic QCD framework that combines variational and Green's function Monte Carlo methods with NNLO potentials to predict the masses of fully-heavy baryons and the binding properties of fully-heavy tetraquarks, achieving improved perturbative stability while identifying discrepancies with lattice QCD that are consistent with neglected 1/mQ1/m_Q corrections.

Benoît Assi, Andreas S. Kronfeld, Simon Vaiva, Michael L. Wagman2026-07-13
⚛️ nuclear theory

In-medium hyperon potentials and the quarkyonic hyperon onset: charged Σ\Sigma's in β\beta-equilibrium and the neutrino connection

This paper demonstrates that quarkyonic matter, when dressed with in-medium hyperon potentials constrained by hypernuclear and neutrino data, statistically resolves the neutron-star hyperon puzzle by delaying the onset of charged Σ\Sigma hyperons and suppressing core strangeness, thereby allowing for hyperon-free 2 M⊙2\,M_\odot stars while predicting a significantly reduced sensitivity of the maximum mass to hyperon potentials compared to mean-field models.

Jaroslaw Nowak2026-07-13