Inside the Proton: Mapping Baryon States with QCD
This review explores how QCD sum rules are used to predict and understand the properties of baryons and exotic baryonium states, providing a comprehensive look at hadron spectroscopy.
Science
The Top Quark at Thirty: A New Era of Precision
![The distribution of [latex]m(t\bar{t})[/latex]-a measure of the top quark-antiquark pair mass-across multiple angular bins demonstrates a correspondence between observed data and quantum chromodynamic predictions, with discrepancies accounted for by a fitted pseudoscalar [latex]\eta_t[/latex] signal, revealing the subtle interplay between perturbative calculations and resonant phenomena in top quark pair production.](https://arxiv.org/html/2512.24464v1/x2.png)
Three decades after its discovery, the top quark continues to reveal subtle nuances in particle physics, driving a new wave of high-precision measurements and theoretical investigations.
Untangling Topology and Loss: A New Frontier for Quantum Control
New research reveals how entanglement can be harnessed to characterize and manipulate dynamic phases in non-Hermitian topological systems, paving the way for advanced quantum information processing.
Beyond Spin: Exploring Quantum Entanglement in Particle Collisions
A new framework proposes testing for entanglement using intrinsic particle properties like flavor, offering a novel path to probe quantum correlations in high-energy physics.
From Quarks to Mesons: A New Model of Hadron Formation
![The analysis extends the previously established framework-detailed in Figure 4-to investigate the behavior of [latex]D_{s}-mesons[/latex], confirming the applicability of the model across a broader range of particle types.](https://arxiv.org/html/2512.22465v1/x_e_spectrum_ratio_charged_D_s_multi_graph.png)
Researchers have developed a comprehensive framework for understanding how quarks and gluons combine to form hadrons, including excited meson states.
Spinning New Physics into Tau Pair Production
![The distribution of the reconstructed dilepton mass [latex]m_{\tau\tau}[/latex] and the cosine of the decay angle [latex]\cos\theta[/latex] characterizes events originating from the production and decay of quark-antiquark pairs into tau leptons in proton-proton collisions at a center-of-mass energy of 13 TeV.](https://arxiv.org/html/2512.22971v1/x3.png)
Researchers detail a Monte Carlo framework incorporating spin correlations and electroweak effects to search for subtle hints of physics beyond the Standard Model in tau lepton decays.
Hidden Symmetries: Bridging Gauge Theories and Many-Body Physics
![The visual representation demonstrates transposed Young diagrams, a mathematical construct wherein the shape and arrangement of boxes within a diagram are altered while preserving underlying combinatorial properties - a transformation crucial for understanding relationships between partitions and their dual representations in areas like symmetric function theory and representation theory of the symmetric group [latex]S_n[/latex].](https://arxiv.org/html/2512.23099v1/transposed.png)
A new review reveals surprising connections between the mathematical frameworks governing fundamental forces and the behavior of complex quantum systems.
Black Hole Shadows: How Matter Warps Spacetime
![The study demonstrates how the presence of a dark matter halo influences time evolution, exhibiting distinct behaviors in regimes of low compactness versus those where compactness exceeds a critical threshold [latex]C^{\text{LR}}[ /latex].](https://arxiv.org/html/2512.22267v1/x17.png)
New research explores how surrounding matter distributions subtly alter the gravitational landscape around black holes, impacting everything from light paths to orbital behavior.
Hunting for Exotic Particles at the LHC
![The anticipated sensitivity of Large Hadron Collider searches suggests that, at the conclusion of the High-Luminosity LHC phase, constraints on multiply charged, long-lived particles will vary significantly depending on their color charge-with color-singlet scalars and fermions exhibiting the greatest reach, and color-triplet counterparts offering correspondingly diminished detection prospects-a result detailed in [Altakach:2022hgn].](https://arxiv.org/html/2512.23387v1/x5.png)
The MoEDAL-MAPP experiment offers a unique approach to searching for charged, long-lived particles that could reveal physics beyond our current understanding.
Beyond Determinism: How Models Shape Our View of Reality
A new analysis suggests the line between deterministic and indeterministic physics isn’t a property of the universe itself, but a consequence of how we choose to model it.