2092 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 utilizes light-cone QCD sum rules to calculate the radiative decay widths of heavy-strange axial-vector mesons, demonstrating that the significant difference in decay patterns between the lower and higher states arises from the constructive and destructive interference of - mixing, respectively.
This paper introduces \texttt{CTPWA}, a high-performance Partial Wave Analysis framework that leverages covariant tensor formalism, extensive precomputation, and fully GPU-based processing to accelerate fitting speeds by two orders of magnitude, thereby enabling high-statistics hadron spectroscopy at experiments like BESIII.
This paper introduces an efficient phase-space weighting method that incorporates detector mass-resolution effects into amplitude analysis by mapping theoretical amplitudes to observational space using Monte Carlo truth-reconstruction correspondences, thereby eliminating the need for explicit multidimensional convolution while significantly reducing biases and improving the reliability of resonance parameter extraction in high-precision hadron experiments.
This paper demonstrates that non-invertible fusion algebras generate a distinct class of selection rules with genuine organizing power in particle physics, showcasing their ability to produce unique scattering patterns in scalar extensions and solve the doublet-triplet splitting problem in supersymmetric flipped models by forbidding the -term in ways impossible for ordinary Abelian symmetries.
This paper resolves tensions between perturbative QCD predictions and data below the charm threshold by incorporating sizable duality violation contributions up to 2.5 GeV, which significantly improve global agreement despite persistent 3 discrepancies with specific BES-III measurements.
This study demonstrates that Graph Neural Network-based flavour identification for the ESSSB near detector remains highly effective even with significantly reduced volume or photomultiplier tube coverage, provided critical signal regions are maintained, thereby offering flexibility in detector design without compromising CP violation measurement goals.
Using QCD sum rules, this study calculates the photon and gluon gravitational form factors of the proton, revealing that the gluon mass radius is smaller than the photon's, which indicates a more localized gluonic energy distribution within the proton.
This paper presents the calibration of the discriminator threshold for new amplifier-shaper-discriminator chips, intended for the ATLAS muon drift-tube chamber upgrade at the High-Luminosity LHC, demonstrating that the target threshold corresponds to a signal of 20 primary electrons using data from a high-energy muon beam.
This paper reinterprets the look-elsewhere effect as a correction for procedural inconsistency in hypothesis testing, demonstrating that binary tests are inherently robust against it while peak searches require explicit corrections, thereby offering a clearer framework for distinguishing between local and global significance in particle physics.
Using 140 fb of proton-proton collision data at = 13 TeV collected by the ATLAS detector, this study found no evidence of quantum black holes in lepton+jet final states, setting a lower mass threshold limit of 8.8 TeV in the Arkani-Hamed-Dimopoulos-Dvali model and 6.3 TeV in the Randall-Sundrum model.