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2026-04-14
04:38
On Exclusive Coherent Production of Bosons in Electron-Proton Collisions / Balkin, Reuven (UC, Santa Cruz) ; Coren, Ta'el (Technion) ; Jentsch, Alexander (Brookhaven) ; Liu, Hongkai (Brookhaven) ; Ovchynnikov, Maksym (CERN) ; Soreq, Yotam (Technion ; CERN) ; Trifinopoulos, Sokratis (CERN ; Zurich U.)
We study the exclusive electroproduction process $e+p\to e'+p'+X$, with $X$ a single-particle final state, in the forward-proton kinematics relevant for the future Electron-Ion Collider (EIC). [...]
CERN-TH-2026-047 ; arXiv:2604.08667. - 11.
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2026-04-14
04:36
Gravitational Memory from Hairy Binary Black Hole Mergers / Gasparotto, Silvia ; Zosso, Jann ; Aresté Saló, Llibert ; Doneva, Daniela D. ; Yazadjiev, Stoytcho S.
Gravitational-wave memory is a low-frequency, non-oscillatory component of the radiation field that provides a potentially powerful but as yet undetected probe of strong-field gravity. [...]
CERN-TH-2026-086 ; arXiv:2604.09350. - 26.
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2026-04-14
04:34
How well can the QCD axion hide? / Lee, Sung Mook (CERN) ; Ramos, Maria (CERN) ; Vilches, Fuensanta (Granada U.)
Motivated UV frameworks generically predict the existence of multiple axion fields. [...]
CERN-TH-2026-087 ; arXiv:2604.08657. - 19.
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2026-04-14
04:34
Gardening on the Moon: An Advection-Diffusion Model to Guide the Search for Supernova Debris in the Lunar Regolith / Costello, Emily S. (U. Hawaii (main)) ; Ellis, John (CERN ; King's Coll. London (main)) ; Fields, Brian D. (Illinois U., Urbana (main)) ; Surman, Rebecca (U. Notre Dame (main)) ; Wang, Xilu (CAS, Beijing)
The vertical redistribution of materials in the lunar regolith - ranging from continuously produced space-weathering products to sporadic pulses of supernova- or kilonova-derived isotopes - remains a fundamental problem in planetary science. [...]
KCL-PH-TH/2026-10 ; CERN-TH-2026-073 ; arXiv:2604.09524. - 5.
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2026-04-11
05:08
Lattice determination of the higher-order hadronic vacuum polarization contribution to the muon $g-2$ / Beltran, Arnau (U. Mainz, PRISMA) ; Conigli, Alessandro (Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Kuberski, Simon (CERN) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; CERN) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Bonn U., HISKP) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI)
We present the first lattice QCD calculation of the next-to-leading order (NLO) hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment with sub-percent precision. [...]
arXiv:2604.08351 ; MITP-26-017 ; CERN-TH-2026-080. - 10.
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2026-04-10
04:19
A first study of strong isospin breaking effects in lattice QCD using truncated polynomials / Albandea, David (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Kuberski, Simon (CERN) ; Panadero, Fernando P. (Madrid, IFT)
Computing derivatives of observables with respect to parameters of the theory is a powerful tool in lattice QCD, as it allows the study of physical effects not directly accessible in the original Monte Carlo simulation. [...]
arXiv:2603.24420 ; MITP-26-015 ; CERN-TH-2026-059 ; IFT-UAM/CSIC-26-38. - 10.
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2026-04-09
07:55
Influence of tides and self-gravity on Ultra-Light Dark Matter Bounds from Dwarf Galaxies / Caputo, Andrea (CERN ; Weizmann Inst. ; U. Rome La Sapienza (main) ; INFN, Rome) ; Teodori, Luca (IAC, La Laguna ; Laguna U., Tenerife)
Dwarf spheroidal galaxies provide some of the most sensitive astrophysical probes of ultra-light dark matter (ULDM), but the inferred constraints can be affected by two important systematics: tidal interactions with the Milky Way, which reduce ULDM-induced dynamical heating, and stellar self-gravity, which can become relevant if the stellar component was more compact at earlier times. [...]
arXiv:2604.01278 ; CERN-TH-2026-065. - 18.
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2026-04-09
05:02
Comments on Symmetry Operators, Asymptotic Charges and Soft Theorems / Tizzano, Luigi (CERN)
We study the relation between emergent 1-form symmetries and soft photon theorems in QED. [...]
CERN-TH-2026-083 ; arXiv:2604.06088. - 8.
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2026-04-08
05:08
Simulating Axion Electrodynamics in Magnetized Plasmas: Energy transfer in the inhomogeneous and strongly varying limit / Corelli, Fabrizio (U. Rome La Sapienza (main) ; Potsdam, Max Planck Inst. ; INFN, Rome) ; Ginés, Estanis Utrilla (Valencia U., IFIC) ; Cannizzaro, Enrico (Lisbon, CENTRA ; IST, Lisbon (main)) ; Caputo, Andrea (U. Rome La Sapienza (main) ; CERN ; Weizmann Inst. ; INFN, Rome) ; Witte, Samuel J. (Oxford U., Theor. Phys. ; DESY ; Hamburg U., Inst. Theor. Phys. II)
In this work we study the electromagnetic response induced by axions in a magnetized plasma, focusing specifically on characterizing energy transfer and energy losses from the ambient axion field in highly inhomogeneous and strongly varying backgrounds. [...]
DESY-26-046 ; CERN-TH-2026-069 ; arXiv:2603.26868. - 37.
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2026-04-04
04:27
Fluid perturbations from expanding bubbles in first-order phase transitions / Caprini, Chiara (Geneva U., Dept. Theor. Phys. ; CERN) ; Midiri, Antonino S. (Geneva U., Dept. Theor. Phys.) ; Procacci, Simona (Geneva U., Dept. Theor. Phys.) ; Roper Pol, Alberto (Geneva U., Dept. Theor. Phys.)
We study the power spectrum of the velocity field induced during a first-order phase transition occurring in the radiation-dominated era. [...]
CERN-TH-2026-081 ; arXiv:2604.02240. - 85.
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