2131 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 proposes a novel solution to the strong CP problem where an accidental Peccei-Quinn symmetry emerges from a chiral U(1) gauge symmetry and is broken by mirror QCD dynamics, simultaneously explaining dark matter, baryogenesis, and generating observable gravitational waves and LHC signatures without requiring a light QCD axion or massless fermions.
This contribution presents a global analysis of -meson flavor anomalies extended to the baryonic sector and demonstrates that the decay provides a powerful, independent probe for New Physics, with the scenario identified as the most favored solution and specific angular observables serving as highly sensitive indicators for potential CP-violating or CP-conserving dynamics.
This paper investigates the Left-Right Inverse Seesaw model's ability to explain CP violation in decays, finding that while it cannot account for the integrated CP asymmetry observed by BaBar, it predicts a distinctive and pronounced signal in the differential forward-backward CP asymmetry driven by a non-decoupling scalar operator.
This work demonstrates that for the production of inclusive jets at the LHC, the usual scale variations used to estimate missing higher-order uncertainties can be drastically unreliable, as NNLO+NNLL calculations reveal that resummation effects significantly alter both the central cross sections and the uncertainty estimates.
This article proposes a framework to solve the inverse problem of identifying the ultraviolet origins of CP violation and Peccei-Quinn symmetry breaking by demonstrating that six representative classes of effective operators near the QCD scale generate distinct, experimentally distinguishable patterns of electric dipole moments across various nuclear, atomic, and molecular systems.
This study demonstrates that dynamically scheduling high-performance computing clusters to align with periods of abundant renewable energy in Germany can significantly reduce both operational costs and carbon emissions while maintaining overall computing targets, even when accounting for hardware acquisition costs and embedded emissions.
Using 138 fb of 13 TeV proton-proton collision data, the CMS collaboration performed a search for nearly mass-degenerate higgsino-like electroweakinos via low-momentum isolated tracks and missing transverse momentum, finding no significant excess and setting stringent exclusion limits on chargino masses up to 185 GeV for mass splittings between 0.28 and 1.15 GeV.
This paper presents a unified analysis of experimental and lattice QCD data that confirms the and as SU(3) flavor partner resonance states with specific pole masses and widths, while revealing that their internal structure requires significant components beyond simple meson-meson molecules.
The Carleton Noble Liquid Detector Laboratory (COLD Lab) developed and calibrated a comprehensive radon emanation measurement system, comprising a stainless steel chamber, ZnS(Ag) cell, and charcoal trap, to characterize radon contamination from materials and gases in order to reduce backgrounds in rare event search experiments like DEAP-3600.
This paper presents the first quark-gluon level tomographic image of the helium-4 nucleus by analyzing coherent deeply virtual Compton scattering data with essential kinematic higher-twist and next-to-leading-order strong coupling corrections.