1472 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 that dark particles with lepton-flavor-violating couplings to the tau lepton can trigger decay cascades resulting in rare, high-multiplicity neutrinoless tau decays (such as or ) that dominate over traditional three-body signatures and offer new experimental search channels across various dark sector models.
The STAR experiment at RHIC presents high-statistics femtoscopy results from Isobar and Au+Au collisions, revealing an attractive interaction in - pairs and a bound state in - pairs through the analysis of final-state correlations.
This paper reviews recent inclusive and differential cross-section measurements by the ATLAS and CMS collaborations, highlighting investigations into off-shell effects, Monte Carlo modeling, and the observation of quasi-bound states near the production threshold for indirect Yukawa coupling extraction.
Using 62 fb of proton-proton collision data at = 13.6 TeV collected by the CMS detector, this paper presents the first search for Higgs boson pair production in the decay channel with two leptons, finding results consistent with the Standard Model and setting an upper limit of 12.0 times the predicted cross section at 95% confidence level.
This paper proposes a Template-Adapted Mixture Model that leverages multiple biased simulations to perform robust, data-driven parameter inference for signal fraction estimation, effectively mitigating simulation-data mismodeling in complex particle physics analyses.
Using cosmic ray muons in the gadolinium-loaded Super-Kamiokande detector, this study presents the first threshold-free measurement of neutron multiplicity in muon capture on oxygen nuclei, determining the probabilities for emitting zero to three neutrons with a detection efficiency of approximately 50%.
To address the data volume challenges of LHCb's Run 3, this paper introduces the novel Inclusive Multivariate Isolation (IMI) algorithm, which reduces event size by 45% while maintaining 99% signal efficiency and superior background rejection compared to traditional methods.
This paper proposes a systematic framework using maximum-entropy reweighting and precision moments of energy flow polynomials to upgrade parton-shower event samples with higher-accuracy theoretical constraints, thereby restoring physical behavior and improving predictions across a broad range of observables while preserving full event-level exclusivity.
This paper refines theoretical predictions for light-by-light scattering by improving two-loop helicity amplitudes with asymptotic expansions and Coulomb resummation, providing state-of-the-art Standard Model cross-section calculations and a new Monte Carlo event generator named LbLatNLO.
The paper advocates for a bold, long-term shift in particle physics research toward the development of a yotta-eV scale tau-lepton collider located in the Oort cloud, arguing that despite requiring Kardashev Level-I or II civilization capabilities, this approach should become the community's primary focus for precision Higgs studies and new particle discovery.