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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) ; Shi, Z. (Waterloo U., IQC) ; Wilson, C.M. (Waterloo U., IQC)
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. [...]
LAPTH-048/25 ; CERN-TH-2026-010 ; arXiv:2601.22145. - 55.
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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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2026-01-06
04:12
Energy Correlators of Spinning Sources / Riembau, Marc (CERN ; Ecole Polytechnique, Lausanne) ; Son, Minho (KAIST, Taejon)
The $N$-point energy correlator measures the energy flux through $N$ detectors. [...]
CERN-TH-2025-260 ; arXiv:2512.16985. - 48.
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2026-01-06
04:07
Early-Time Dynamics of Heavy-Ion Collisions through Energy Correlators: celestial blocks and the spacetime structure of out-of-equilibrium QCD matter / Barata, João (CERN) ; Milhano, José Guilherme (LIP, Lisbon ; Lisbon, IST) ; Sadofyev, Andrey V. (IKERBASQUE, Bilbao ; Basque U., Bilbao ; LIP, Lisbon) ; Silva, João M. (LIP, Lisbon ; Lisbon, IST ; Granada U.)
Ultrarelativistic heavy-ion collisions provide a unique window into far-from-equilibrium states of QCD matter. [...]
CERN-TH-2025-257 ; arXiv:2512.17009. - 17.
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