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 proposes a flavor mixing scheme to classify molecular hidden-charm pentaquarks formed by ground single-charm baryons and anti-charmed mesons, successfully explaining observed and states while predicting the existence and mass spectra of new single- and double-strange bound states driven by specific channel mixings.
This paper proposes "spin femtoscopy," a novel framework that utilizes spin-resolved femtoscopic correlation functions of particle pairs (such as ) to experimentally access and disentangle genuine two-particle spin correlations from quantum statistical and final-state interaction effects in relativistic heavy-ion collisions.
This paper presents a GPU-accelerated spectrum-reweighting framework that significantly accelerates likelihood evaluations for new-physics searches in solar neutrino--electron scattering by applying bin-to-bin weights to precomputed recoil spectra, thereby eliminating the need for costly detector Monte Carlo regeneration at each parameter point and enabling interactive parameter scans on a single workstation.
This paper resolves the negative angular-parameter puzzle in and decays by demonstrating that a model incorporating -breaking octet contributions and common final-state interactions mixing S- and D-wave amplitudes successfully fits the data, whereas an exact singlet description fails decisively.
Using QCD sum rules, this paper determines the mixing angle between the and axial-vector states in the sector to be , indicating significant mixing between these two states.
This paper proposes and validates the finite exponential mixture as a flexible, semi-parametric alternative to traditional parametric models for approximating smoothly falling background distributions in LHC new physics searches, demonstrating its effectiveness across both small and large datasets while maintaining low bias and consistent statistical coverage.
This paper presents the first amplitude-assisted regression procedure at next-to-leading-order QCD accuracy, augmented with parton-shower effects and machine-learning techniques, to robustly extract the longitudinal-boson production rate in di-boson collisions at the LHC.
This paper presents a methodology using track-fitting quality to discriminate the direction of cosmic muons sneaking into the COMET experiment's solenoid, successfully demonstrating a reduction in this critical background by an order of magnitude through Monte Carlo simulations.
This paper demonstrates that off-the-shelf commercial accelerometers can effectively measure and enable real-time, in situ vibration monitoring at millikelvin temperatures within cryogen-free dilution refrigerators, thereby facilitating noise mitigation for diverse fundamental physics applications.
This paper reviews theories involving confining dark sectors, highlighting their potential to explain dark matter candidates, the abundance similarity puzzle, and various experimental discovery channels, while advocating for further exploration of this class of models.