Tensor states and
Using the QCD sum rule method, this paper investigates the properties of two heavy-quark hadronic molecules, and , predicting their masses and relatively broad decay widths to demonstrate their instability against dissociation.
⚛️ Category
hep-ex
1434 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.
Top-Quark Decay at Next-to-Next-to-Next-to-Leading Order in QCD
This paper presents the first complete NNNLO QCD corrections to the top-quark decay width and -helicity fractions, providing high-precision theoretical predictions that meet the accuracy requirements of future particle colliders.
First Indication of Solar B Neutrinos via Coherent Elastic Neutrino-Nucleus Scattering with XENONnT
The XENONnT experiment has reported the first measurement of nuclear recoils from solar B neutrinos using coherent elastic neutrino-nucleus scattering, providing a solar neutrino flux and cross section consistent with Standard Model predictions.
Berry phase in axion physics, SM global structure, and generalized symmetries
This paper proposes a unified framework for analyzing the Berry phase in axion-photon and axion-fermion interactions, suggesting that measuring this phase can serve as a novel method for detecting axions and probing the Standard Model's global structure and generalized symmetries.
Measuring spin correlation between quarks during QCD confinement
Researchers using the STAR experiment at RHIC have found evidence of spin correlations in hyperon pairs, suggesting that the spin-correlated virtual quark-antiquark pairs from the QCD vacuum are preserved during the process of confinement into hadrons.
Fabrication and characterization of AlMn alloy superconducting films for 0vbb experiments
This paper investigates the fabrication and characterization of AlMn alloy superconducting films, demonstrating that their critical temperature can be tuned to the 10–20 mK range through annealing and studying its sensitivity to magnetic fields, which is essential for developing transition edge sensors (TES) for next-generation neutrinoless double-beta decay experiments.
Fabrication and Characterization of X-ray TES Detectors Based on Annular AlMn Alloy Films
This study details the fabrication and characterization of X-ray transition edge sensors (TESs) using unique annular AlMn alloy films, achieving an energy resolution of 11.0 eV at 5.9 keV.
Search for Axion-Like Particles in High-Magnetic-Field Pulsars with NICER
Using data from NASA's NICER mission, this study searches for axion-like particles in the X-ray spectra of three pulsars, establishing upper limits on the axion-photon coupling constant in the -- range for masses between $0.8$ and .
Hadronic contributions to within Resonance Chiral Theory
This paper reviews recent progress in calculating the hadronic contributions to the muon's anomalous magnetic moment—specifically hadronic vacuum polarization and hadronic light-by-light scattering—using Resonance Chiral Theory, finding results consistent with the White Paper 2 values.
Any Light Particle Searches with ALPS II: first science results
The first science campaign of the ALPS II experiment at DESY found no evidence of axions or similar light particles, instead establishing a new, significantly improved limit on the di-photon coupling strength for pseudoscalar bosons.