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CERN Theory

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2026-02-28
04:06
Charmed nuclei and exotic charmed meson production at CBM@FAIR and ALICE@LHC / Chimruang, Thanaporn (Suranaree U. of Tech. ; Darmstadt, GSI) ; Herold, Christoph (Suranaree U. of Tech.) ; Limphirat, Ayut (Suranaree U. of Tech.) ; Yan, Yupeng (Suranaree U. of Tech.) ; Steinheimer, Jan (Darmstadt, GSI ; Frankfurt U.) ; Dönigus, Benjamin (Goethe U., Frankfurt (main)) ; Reichert, Tom (CERN) ; Vovchenko, Volodymyr (Houston U.) ; Bleicher, Marcus (Goethe U., Frankfurt (main) ; Helmholtz Res. Acad. Hesse for FAIR)
We make predictions for the expected multiplicities of exotic charmed hadrons and charmed nuclei in Au+Au collisions at SIS100 and LHC beam energies, using input on light hadron and charm production from the UrQMD transport model, and applying the Thermal-FIST model. [...]
CERN-TH-2026-026 ; arXiv:2602.22676.
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2026-02-27
04:23
Atomic Spectroscopy Probes of New Physics / Delaunay, Cédric (Annecy, LAPTH) ; Karr, Jean-Philippe (Paris, Lab. Kastler Brossel ; Paris U., VI-VII) ; Soreq, Yotam (Technion ; CERN)
Precision spectroscopy has long played a central role in testing the foundations of physics, from the early insights that led to the development of quantum mechanics to the validation of quantum electrodynamics and the determination of fundamental constants. [...]
arXiv:2602.20750 ; CERN-TH-2026-028.
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2026-02-27
04:10
Modified Abelian Gauge Theories / Dierigl, Markus (CERN) ; Minasian, Ruben (IPhT, Saclay ; IRFU, SPhN, Saclay) ; Novičić, Dušan (Munich, Max Planck Inst.)
The topological properties of field configurations in gauge theory contain important data about the (generalized) global symmetries of the theory as well as potential inconsistencies in the form of gauge anomalies. [...]
arXiv:2602.21282 ; CERN-TH-2026-027.
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2026-02-24
04:15
The Four-Jet Rate in Electron-Positron Annihilation at Order $α_s^4$ / Chen, Xuan (Shandong U.) ; Chicherin, Dmitry (Annecy, LAPTH) ; Fox, Elliot (Durham U., IPPP) ; Glover, Nigel (Durham U., IPPP ; CERN) ; Marcoli, Matteo (Durham U., IPPP) ; Sotnikov, Vasily (Zurich U.) ; Sun, Huiting (Shandong U.) ; Zhang, Hantian (CERN) ; Zoia, Simone (Zurich U.)
We compute for the first time the production rate for four jets in electron-positron annihilation at next-to-next-to-leading order. [...]
CERN-TH-2026-017 ; IPPP/26/12 ; ZU-TH 04/26 ; LAPTH-007/26 ; arXiv:2602.18185.
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2026-02-19
04:58
Enhanced Cosmic-Ray Antinuclei Fluxes with Dark Matter Annihilation into SUEPs / Di Mauro, Mattia (INFN, Turin) ; Gemmell, Caleb (Wisconsin U., Madison ; Toronto U.) ; Batz, Austin (Oregon U. ; LBL, Berkeley) ; Curtin, David (Toronto U.) ; Donato, Fiorenza (INFN, Turin) ; Fornengo, Nicolao (INFN, Turin) ; Kribs, Graham D. (Oregon U. ; CERN)
Standard-Model (SM) hadronic parton showers initiated by secondary cosmic-ray production or dark matter (DM) annihilations robustly predict very low antinuclei yields and a strong additional suppression for heavier antinuclei. [...]
arXiv:2602.15132 ; CERN-TH-2026-012.
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2026-02-17
04:27
The Dark Side of the Moon: Listening to Scalar-Induced Gravitational Waves / Blas, D. (Barcelona, IFAE ; ICREA, Barcelona) ; Foster, J.W. (Wisconsin U., Madison) ; Gouttenoire, Y. (U. Mainz, PRISMA ; Paris, Inst. Astrophys.) ; Iovino, A.J. (New York U., Abu Dhabi) ; Musco, I. (Nova Gorica U.) ; Trifinopoulos, S. (CERN ; Zurich U.) ; Vanvlasselaer, M. (U. Barcelona (main))
The collapse of large-amplitude primordial curvature perturbations into planetary-mass primordial black holes generates a scalar-induced gravitational wave background in the $μ$Hz frequency range that may be detectable by future Lunar Laser Ranging and Satellite Laser Ranging data. [...]
arXiv:2602.12252 ; CERN-TH-2026-021.
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2026-02-17
04:25
Precise QCD Predictions for Hadron-in-jet Production in $e^+e^-$ Collisions / Bonino, Leonardo (Zurich U.) ; Gehrmann-De Ridder, Aude (Zurich U. ; Zurich, ETH) ; Gehrmann, Thomas ; Huss, Alexander (Zurich U. ; CERN) ; Merlotti, Francesco (Zurich, ETH) ; Stagnitto, Giovanni (Genoa U.)
The production of identified hadrons inside jets in $e^+ e^-$ annihilation allows for detailed studies of parton-to-hadron fragmentation functions in a clean environment. [...]
arXiv:2602.12344 ; CERN-TH-2026-019 ; ZU-TH 03/26.
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2026-02-13
04:01
Dark Matter from Eternity / Franciolini, G. (U. Padua (main) ; INFN, Padua ; CERN) ; Peloso, M. (U. Padua (main) ; INFN, Padua) ; Riotto, A. (U. Geneva (main))
We propose that the totality of dark matter in the universe might ascribe its origin to one of the key properties of cosmological inflation, that it may be eternal: regions that at the end of the primordial accelerated expansion of the universe never reheated, but keep eternally inflating, manifest themselves as primordial black holes in our observable universe. [...]
arXiv:2602.08338 ; CERN-TH-2026-015.
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2026-02-06
06:08
Heavy-quark production in deep-inelastic scattering -- Mellin moments of structure functions / Klann, Marco (Hamburg U., Inst. Theor. Phys. II) ; Moch, Sven-Olaf (Hamburg U., Inst. Theor. Phys. II) ; Schönwald, Kay (CERN)
We compute Mellin moments of the heavy-quark structure functions in deep-inelastic scattering at next-to-leading order in quantum chromodynamics, retaining their full dependence on the heavy-quark mass. [...]
DESY-26-013 ; CERN-TH-2026-014 ; arXiv:2602.04455.
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2026-02-03
04:54
Compact U(1) Lattice Gauge Theory in Superconducting Circuits with Infinite-Dimensional Local Hilbert Spaces / Alcaine-Cuervo, J.M. (Basque U., Bilbao ; U. Basque Country, Leioa) ; Pradhan, S. (Basque U., Bilbao ; Donostia Intl. Phys. Ctr., San Sebastian) ; Rico, E. (Basque U., Bilbao ; Donostia Intl. Phys. Ctr., San Sebastian ; CERN ; IKERBASQUE, Bilbao) ; Shi, Z. (U. Waterloo (main)) ; Wilson, C.M. (U. Waterloo (main))
We propose a superconducting-circuit architecture that realizes a compact U(1) lattice gauge theory using the intrinsic infinite-dimensional Hilbert space of phase and charge variables. [...]
CERN-TH-2026-003 ; arXiv:2601.23150.
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