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TH Preprints

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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. [...]
CERN-TH-2026-015 ; arXiv:2602.08338. - 5.
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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. - 51.
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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. - 21.
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2026-01-31
04:25
Neural S-matrix bootstrap II: solvable 4d amplitudes with particle production / Gumus, Mehmet Asim (Annecy, LAPTH) ; Leflot, Damien (Annecy, LAPTH) ; Tourkine, Piotr (Annecy, LAPTH) ; Zhiboedov, Alexander (CERN)
We study a model for nonperturbative unitarization of the four-point contact scalar amplitude in four dimensions. [...]
arXiv:2601.22145 ; LAPTH-048/25 ; CERN-TH-2026-010. - 67.
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2026-01-23
04:21
The Simplest $B$ Decay, Precisely / Cornella, Claudia (CERN) ; Ferré, Max (U. Mainz, PRISMA) ; König, Matthias (U. Mainz, PRISMA) ; Neubert, Matthias (U. Mainz, PRISMA ; Cornell U., LEPP)
We derive the QCD$\times$QED factorization theorem governing the leptonic decay $B^-\toμ^-\barν_μ(γ)$ at all orders in $α_s$ and $α$. [...]
CERN-TH-2026-006 ; MITP-25-075 ; arXiv:2601.14361. - 134.
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2026-01-23
04:07
Top quark FCNC in Randall-Sundrum models: post-LHC allowed rates and searches at $e^+e^-$ and $μ^+ μ^-$ colliders / Airen, Sagar (Maryland U.) ; Franceschini, Roberto (INFN, Rome3 ; Rome III U. ; CERN)
We present the sensitivity to Flavor Changing Neutral Currents (FCNC) in interactions involving the top quark at future $e^+e^-$ and $μ^+μ^-$ machines. [...]
arXiv:2601.14966 ; CERN-TH-2025-236. - 20.
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2026-01-17
05:51
A cosmologist's take on Little Red Dots / De Luca, Valerio (Johns Hopkins U.) ; Del Grosso, Loris (Johns Hopkins U.) ; Franciolini, Gabriele (Padua U. ; INFN, Padua ; CERN) ; Kritos, Konstantinos (Johns Hopkins U.) ; Berti, Emanuele (Johns Hopkins U.) ; D'Orazio, Daniel (Johns Hopkins U. ; Baltimore, Space Telescope Sci. ; Bohr Inst.) ; Silk, Joseph (Johns Hopkins U. ; Paris, Inst. Astrophys. ; Oxford U.)
The James Webb Space Telescope (JWST) has uncovered a population of compact, high-redshift sources, the Little Red Dots (LRDs), which may host supermassive black holes (BHs) significantly heavier than their stellar content compared with local scaling relations. [...]
arXiv:2512.19666 ; CERN-TH-2025-261. - 11.
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2026-01-08
04:29
$Λ_b \to Λ$ Form Factors from Light-Cone Sum Rules with $Λ$-Baryon Distribution Amplitudes / Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris) ; Mishra, D. (IP2I, Lyon)
We compute the $Λ_b \to Λ$ transition form factors using light-cone sum rules based on $Λ$-baryon distribution amplitudes, including contributions up to twist--6. [...]
arXiv:2601.02302 ; CERN-TH-2026-001. - 29.
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2026-01-06
04:13
Braking protons at the EIC: from invisible meson decay to new physics searches / 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 ; MIT, Cambridge, CTP ; Zurich U.)
We investigate the sensitivity of the Electron-Ion Collider (EIC) to invisible final states in coherent exclusive electroproduction. [...]
CERN-TH-2025-238 ; MIT-CTP/5944 ; arXiv:2601.00068. - 16.
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2026-01-06
04:12
Deforming and dissecting AdS$_3$ with matter / Callebaut, Nele (Cologne U.) ; Hergueta, Blanca (Cologne U.) ; Monten, Ruben (CERN) ; Selle, Matteo (Cologne U.)
We study deformations of the model by Henneaux, Martínez, Troncoso and Zanelli [arXiv:hep-th/0201170] which features asymptotically AdS$_3$ black hole solutions that incorporate the exact backreaction of a scalar field. [...]
CERN-TH-2025-268 ; arXiv:2512.21255. - 39.
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