506 papers
This paper introduces the Kinematically Diagonalized Current Basis (KDCB), a generative framework that constructs dimension-8 SMEFT operators from conserved Noether currents to resolve kinematic mixing, ensure unique energy scaling in scattering amplitudes, and facilitate the application of positivity bounds and global fits for interpreting new physics.
This paper demonstrates that by accounting for the competitive dynamics of dark matter evaporation and annihilation, solar observations can significantly constrain spin-dependent dark matter-nucleon scattering cross-sections for masses below the traditional 4 GeV evaporation limit, outperforming terrestrial direct detection constraints by up to five orders of magnitude.
This paper extends the principle of relativity to finite-mass quantum observers by establishing operational requirements for transition amplitude equivalence and the inaccessibility of an observer's own motion state, resulting in a fully relative formulation of quantum mechanics with observer-dependent Hilbert spaces, novel uncertainty relations, and experimentally testable signatures.
This paper analyzes full Planck 2018 and BICEP/Keck 2018 CMB data to constrain stable cosmic string and domain wall networks, finding no statistically significant evidence for defects but observing a mild preference for non-zero cosmic string tension while significantly improving constraints and forecasting future sensitivities for upcoming experiments.
This paper proposes a lattice-ready entanglement observable, the vacuum-subtracted radius flow of Rényi entropy, to extract hadronic gravitational form factors by fitting flow data to a basis of spin-0 and spin-2 templates, thereby enabling the discrimination of scalar versus spin-2 entanglement control through the location and characteristics of the flow's extremum.
This paper presents a detailed analysis of Higgs boson production in association with a single top quark at 13 and 14 TeV, utilizing advanced modeling and kinematic optimization to constrain the top quark Yukawa coupling and project future sensitivities for the High-Luminosity LHC.
This paper presents a comprehensive reassessment of perturbative unitarity bounds in dimension-six SMEFT using spinor-helicity techniques, revealing that theoretical constraints on four-fermion operators often surpass experimental limits at TeV scales, particularly when enhanced by sum rules.
This paper investigates how non-Bunch-Davies initial conditions affect the gravitational production of relic particles, demonstrating that while the impact is negligible for conformally coupled fields, it significantly alters the abundance and spectrum of other particles like spin-1 longitudinal modes, thereby allowing for viable dark matter production across a wide range of masses.
This white paper, produced by the EU-funded Cosmic WISPers network, reviews the theoretical motivations and ongoing searches for Weakly Interacting Slim Particles (WISPs) as dark matter candidates, while outlining a strategic roadmap to secure European leadership in this field through diverse and cost-effective experiments over the next decade.
This paper presents a complete and predictive set of thermal-relic targets for sub-GeV dark matter coupled to vector mediators in minimal anomaly-free U(1) extensions of the Standard Model, enabling robust discovery or falsification through electron recoil direct detection experiments.
This review explores how multi-messenger astronomy and diverse observational data across various scales constrain and probe extensions to the Standard Model and General Relativity, including dark matter candidates and modified gravity theories, to illuminate the nature of the dark sector.
This paper proposes a unified composite Higgs model based on an coset that simultaneously solves the hierarchy and strong CP problems by identifying the axion with a CP-odd singlet whose mass is enhanced by a hidden gauge sector, allowing for a viable GeV-scale axion accessible at collider experiments.
This paper presents the first observational constraints on Luciano-Saridakis entropic cosmology using combined background data, demonstrating that the model provides a statistically robust fit to current observations and offers a viable extension to the standard CDM model with the potential to alleviate the Hubble tension.
This paper proposes a unified framework where a "flavor in ninths" structure arises from a discrete gauge symmetry that simultaneously explains quark and lepton hierarchies, stabilizes the QCD axion with and a specific ratio, and naturally solves the axion quality problem via high-dimensional operators, predicting a dark matter axion within the reach of near-term experiments.
This paper investigates the potential for detecting lepton flavor-violating axion-like particle (ALP) decays into electron-muon pairs at the LHC via gluon fusion production, demonstrating significantly improved sensitivity limits for ALP masses between 5 and 1000 GeV where Standard Model backgrounds are suppressed.
This paper presents a recently proposed algorithm that transforms non-trivial Feynman integrals into an -factorised form, demonstrating its effectiveness through examples including three-loop banana integrals with unequal masses.
This paper introduces a dual conformal invariance-preserving regularization method using dimensional and analytic techniques to drastically simplify the calculation of slightly off-shell dual conformal integrals, yielding compact logarithmic expressions in contrast to the complex polylogarithms produced by conventional dimensional regularization.
This paper utilizes Fourier-Bessel transformations of exclusive meson production cross sections from photon-proton collisions to reveal that the proton's baryon number is concentrated in a transverse radius of 0.33–0.53 fm, which is significantly smaller than the proton's charge and mass radii.
By applying the Gaussian Expansion Method to the Silvestre-Brac potential within a diquark model, this study reveals that centrifugal forces acting on light degrees of freedom invert the expected mass hierarchy in doubly-heavy tetraquarks, a robust mechanism confirmed across various heavy-hadron systems.
This paper demonstrates that late-time de Sitter cosmological correlators can be efficiently computed and analyzed using a non-unitary Euclidean AdS Lagrangian, revealing that the theory's unitarity is encoded in the positivity of the spectral density rather than standard CFT constraints, with resonant features in this density offering potential signatures for experimental detection.