2527 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.
This paper proposes a quantum error correction-like protocol using multiple quantum sensors to mitigate parallel noise and enhance wave-like dark matter search sensitivity by a factor of , ultimately achieving the standard quantum limit even with non-entangled sensors and unknown signal phases.
This paper proposes a halo-independent framework utilizing quantum sensors with sub-eV thresholds to directly detect sub-GeV dark matter and reconstruct the local dark matter velocity distribution by separating detector-specific responses from a universal halo function.
This paper investigates the rare weak decay of the positronium ion () into an electron and a muon neutrino-antineutrino pair via a virtual boson, calculating its decay rate and finding a branching ratio comparable to that of the weak decay of ortho-positronium.
This paper presents the first fully consistent shell-model calculation of neutrinoless double-beta decay matrix elements for 48Ca, 76Ge, and 82Se, deriving both the nuclear Hamiltonian and decay operators from chiral perturbation theory via many-body perturbation theory while also assessing convergence and theoretical uncertainties.
Using 62.4 fb of 13.6 TeV proton-proton collision data collected via a high-rate data scouting stream, the CMS experiment performed a search for long-lived particles decaying into muons, finding no significant excess over the Standard Model and setting improved upper limits on branching fractions for various beyond-the-Standard-Model scenarios.
This paper presents the design and simulation of a dispersion suppressor channel for a wedge-based final cooling scheme in a 10 TeV Muon Collider, aiming to achieve the necessary transverse emittance reduction of 22 μm while avoiding the technical challenges associated with 40 T solenoids by reducing dispersion to approximately 0.001 m.
This paper investigates non-logarithmic heavy-quark mass effects in the two-jet limit of the Energy-Energy Correlation by introducing a novel partial event fraction calculable via real emission diagrams in four dimensions and proposing an improved factorization scheme that ensures a smooth massless limit through an angle-dependent coefficient function.
This paper demonstrates that damped heavy neutrino-antineutrino oscillations significantly alleviate the suppression of lepton number violation in symmetry-protected pseudo-Dirac heavy neutral leptons at hadron colliders, while showing that combining lepton-number-blind and lepton-number-violating searches can distinguish these models from the double-Majorana limit despite the sensitivity challenges posed by small mass splittings.
This paper presents the first complete numerical solution to the BDMPS-Z equations for in-medium QCD splittings, providing a precise determination of splitting functions that goes beyond standard soft, large-, and harmonic-oscillator approximations by incorporating finite-energy effects, subleading-color contributions, and realistic parton-medium interactions.
Experiments on the Kunwu laser facility and particle-in-cell simulations reveal that broadband laser pulses enhance two-plasmon decay and hot electron generation primarily through stochastic intensity spikes, suggesting that mitigating these spikes is key to controlling hot electron production in direct-drive scenarios.