2506 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 presents a method using a commercial CMOS camera to monitor incident antiproton numbers for the GBAR experiment by detecting ionizing particles from annihilation events on microchannel plates, achieving approximately 10% accuracy in a dense-track environment while minimizing systematic uncertainties through high-granularity tracking and Geant4-based material corrections.
This paper proposes a minimal electroweak dark matter model involving coupled Majorana and Dirac multiplets that explains the high-energy nuclear recoil events observed by the LUX-ZEPLIN collaboration through inelastic scattering with specific mass splittings, while simultaneously predicting correlated elastic spin-independent signals for various multiplet representations.
This paper proposes that the isolated high-energy nuclear recoil event observed by the LUX-ZEPLIN experiment can be explained by the up-scattering of atmospheric neutrinos into a massive beyond-Standard-Model particle, offering a viable alternative to galactic dark matter interpretations.
This paper proposes and evaluates a complementary missing-energy search strategy for the Light Dark Matter eXperiment (LDMX) by utilizing its Electromagnetic Calorimeter as an active target, demonstrating sensitivity to previously unexplored light dark matter parameter spaces with effective interaction strengths as low as for 1 MeV dark matter candidates.
Using 6.4 fb⁻¹ of collision data collected by the BESIII detector, this study presents the first observation of transverse polarization in baryons produced near threshold, enabling the simultaneous extraction of decay asymmetry parameters and the testing of -violating observables in the charmed baryon sector.
This paper critiques a recent study on quantum resources in polarized hyperon–antihyperon systems, arguing that its interpretation of hadronization as a correlated dephasing channel with memory lacks physical justification and that its claims of non-Markovianity and resource protection are merely phenomenological artifacts rather than established physical effects.
This paper uses SN1987A neutrino data to constrain neutrino-dark-fermion interactions mediated by a light scalar, demonstrating that current limits are highly sensitive to emission models and flavor conversion but can be robustly restored by future high-statistics observations from Hyper-Kamiokande.
This paper proposes using cross-rapidity net-baryon cumulants to distinguish QCD critical fluctuations from global baryon-number conservation effects by exploiting their opposite correlation signs, thereby offering a refined strategy for identifying the critical endpoint in beam-energy-scan experiments.
This paper proposes that the 248-keV event observed by LZ can be explained by near-threshold upscattering of 1.08-TeV thermal Higgsino dark matter within a high-scale supersymmetric framework featuring a Peccei-Quinn symmetry, which simultaneously addresses the strong-CP problem, suppresses proton decay, and resolves various cosmological issues.
This paper demonstrates that by subtracting hadronic recoil measured within a specific rapidity interval from the boson's transverse momentum, detector geometry can effectively suppress QCD radiation to unmask gluon saturation signatures in forward production, thereby lowering the effective hard scale and enabling a clearer probe of nonlinear small- QCD in proton-nucleus collisions.