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.
This paper reports on the design, production, and successful installation of the largest TPB-coated wavelength-shifting reflective system in a neutrino detector, which significantly enhances and homogenizes scintillation light collection for the Short-Baseline Near Detector.
This paper presents the first in situ cryogenic characterization of proton-damaged p-channel skipper CCDs, demonstrating that these sensors maintain excellent performance and radiation hardness equivalent to a decade at the Earth/Sun L2 Lagrange point, confirming their suitability for future photon-starved deep-space astronomical instruments.
This paper investigates how a new physics scale within the energy range of neutrino oscillation experiments can induce renormalization group running effects between production and detection, demonstrating that combining data from upcoming experiments like DUNE-ND, JUNO-TAO, and FASER2 offers strong sensitivity to disentangle these running parameters and resolve non-trivial degeneracies.
The CMS collaboration reports a landmark integrated luminosity measurement for 13 TeV proton-proton collisions at the LHC with a record-breaking precision of 0.73%, achieved by calibrating multiple monitors and validating them against Z boson production rates, thereby establishing a crucial sub-percent baseline for testing the Standard Model and future High-Luminosity LHC physics.
This paper describes the development, implementation, and performance evaluation of a dedicated High Multiplicity Trigger (HMT) in the CMS experiment during LHC Run 3, which significantly enhances sensitivity to long-lived particles by efficiently selecting events with unusually large numbers of hits in the muon detectors while maintaining stable operation under high-luminosity conditions.
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.