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 conducts a comprehensive study of the Type-II see-saw mechanism with a non-degenerate triplet Higgs spectrum, deriving updated 95% CL lower limits on the doubly charged scalar mass that exceed current LHC constraints by 50–230 GeV while identifying unconstrained parameter regions and proposing improved search strategies for the high-luminosity phase.
This paper proposes that a compressed mass spectrum scenario in the type-II seesaw model, which has likely evaded previous LHC searches, can be effectively probed using multivariate analysis of same-sign dilepton events with low invariant mass on existing Run 2 and future HL-LHC data.
This paper proposes that an triplet scalar with hypercharge and a small mixing angle with the Standard Model Higgs can explain the 95 GeV diphoton excess through Drell-Yan production, predicting distinct kinematic signatures, an associated charged Higgs state near 95 GeV, and a positive shift in the W boson mass.
This paper analyzes the theoretical constraints, electroweak precision predictions, and LHC phenomenology of the Standard Model extended by a real Higgs triplet, finding that while current searches exclude charged Higgs masses below 110 GeV, a specific signal region excess at 152 GeV suggests a statistically significant preference for a non-zero di-photon branching ratio of the neutral triplet Higgs.
The TUCAN collaboration reports significant progress in commissioning its high-intensity accelerator-driven ultracold neutron source and developing the associated spectrometer, achieving the first UCN production in 2024 and setting the stage for a neutron EDM experiment with a sensitivity goal of and two orders of magnitude improved statistics.
Using 138 fb of 13 TeV proton-proton collision data from the CMS experiment, this study presents the first simultaneous disentanglement of the flavour structure of dimension-6 EFT operators by probing quark-Z interactions across different generations in multilepton final states, confirming Standard Model consistency and setting limits on Wilson coefficients for both light and heavy quarks.
Using 140 fb of ATLAS Run 2 data, this model-agnostic search for Beyond the Standard Model physics in multilepton final states employs unsupervised machine learning to identify anomalies, finding no significant excess and setting new limits on various benchmark models, including the first constraints on a flavourful vector-like lepton model.
This paper investigates the impact of response matrix estimation on differential cross-section unfolding in particle physics, demonstrating that while traditional binned counting methods can inadvertently provide regularization through noise, a proposed unbinned conditional density estimation approach offers a potentially superior alternative for handling limited Monte Carlo sample sizes.
Using 138 fb of proton-proton collision data at 13 TeV collected by the CMS detector, this study presents a measurement of electroweak ZV (V=W, Z) boson pair production with two jets, achieving an observed significance of 1.3 standard deviations and setting world-leading constraints on anomalous quartic gauge couplings through a combination with previous WV channel results.
This paper presents a detailed analysis of proton electromagnetic form factors using exclusive photon leptoproduction data in the Beth-Heitler dominant region, demonstrating that such measurements can provide complementary constraints on the Dirac form factor and yield a charge radius consistent with recent high-precision PRad results.