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2026-01-23
06:32
Microscopic Description of Critical Bubbles / Hoyos, Carlos (ICTEA, Oviedo ; U. Oviedo (main)) ; Mateos, David (U. Barcelona (main) ; ICREA, Barcelona) ; van der Schee, Wilke (Utrecht U. ; CERN ; Nikhef, Amsterdam) ; Subils, Javier G (Utrecht U.)
First-order phase transitions occur through the nucleation of critical bubbles of the stable phase within the metastable phase. [...]
arXiv:2601.09787. - 2026 - 34.
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2026-01-23
04:34
Probing Cosmic Expansion and Early Universe with Einstein Telescope / Ricciardone, Angelo (INFN, Pisa ; Pisa U.) ; Sakellariadou, Mairi (King's Coll. London (main)) ; Ghosh, Archisman (Gent U.) ; Agapito, Alessandro (Aix-Marseille U.) ; Artale, M. Celeste (Andres Bello Natl. U.) ; Bacchi, Michael (Espirito Santo U.) ; Baker, Tessa (Portsmouth U.) ; Baldi, Marco (Bologna U.) ; Bartolo, Nicola (INFN, Padua) ; Begnoni, Andrea (INFN, Padua ; Padua U.) et al.
Over the next two decades, gravitational-wave (GW) observations are expected to evolve from a discovery-driven endeavour into a precision tool for astrophysics, cosmology, and fundamental physics. [...]
arXiv:2601.06017. - 4.
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2026-01-23
04:26
Design, simulation and performance of the resistive-anode PICOSEC Micromegas detector / Janssens, Djunes (CERN) ; Utrobicic, Antonija (Boskovic Inst., Zagreb) ; Kovacic, Marinko (U. Zagreb (main)) ; Lisowska, Marta (CERN) ; Aleksan, Roy (IRFU, Saclay) ; Angelis, Yannis (Aristotle U., Thessaloniki) ; Bortfeldt, Jonathan (LMU Munich (main)) ; Brunbauer, Florian (CERN) ; Brunoldi, Matteo (Pavia U. ; INFN, Pavia) ; Chatzianagnostou, E. (Aristotle U., Thessaloniki) et al.
The PICOSEC Micromegas detector is a Micro-Pattern Gaseous Detector concept developed to achieve tens of picosecond timing resolution for charged particle detection by combining a Cherenkov radiator with a two-stage Micromegas amplification structure. [...]
arXiv:2512.19120. - 18.
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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. [...]
CERN-TH-2025-236 ; arXiv:2601.14966. - 20.
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2026-01-22
04:10
Comparative evaluation of future collider options / Arduini, G. (Chalmers U. Tech.) ; Benedikt, M. (Chalmers U. Tech.) ; Gianotti, F. (Chalmers U. Tech.) ; Jakobs, K. (Freiburg U.) ; Lamont, M. (Chalmers U. Tech.) ; Losito, R. (Chalmers U. Tech.) ; Meddahi, M. (Chalmers U. Tech.) ; Mnich, J. (Chalmers U. Tech.) ; Mounet, N. (Chalmers U. Tech.) ; Schulte, D. (Chalmers U. Tech.) et al.
In anticipation of the completion of the High-Luminosity Large Hadron Collider (HL-LHC) programme by the end of 2041, CERN is preparing to launch a new major facility in the mid-2040s. [...]
arXiv:2511.20417 ; CERN-2025-011. - 83.
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2026-01-21
12:16
Measurement of the $ \mathrm{Z}\gamma $ production cross section and search for anomalous neutral triple gauge couplings in pp collisions at $ \sqrt{s}= $ 13 TeV / CMS Collaboration
A measurement of the fiducial cross section of the associated production of a Z boson and a high-$ p_{\mathrm{T}} $ photon, where the Z decays to two neutrinos, and a search for anomalous triple gauge couplings are reported. [...]
arXiv:2601.14102 ; CMS-SMP-22-009 ; CERN-EP-2025-206 ; CMS-SMP-22-009-003. - 2026 - 43.
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2026-01-20
06:55
Differential measurements of $\bar{t}tZ$ and $\bar{t}t\bar{t}t$ at large $Q^2$ at FCC-hh / Beriet, Louise (Lund U. (main) ; CERN) ; Defranchis, Matteo (CERN) ; Stapf, Birgit (CERN) ; Selvaggi, Michele (CERN)
This contribution presents studies of differential top-quark measurements at the Future Circular Collider in its proton-proton stage (FCC-hh). [...]
arXiv:2601.04763. - 2026 - 7.
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2026-01-20
06:55
Dressing and Screening in Anti-de Sitter / Ankur (U. Trieste (main) ; INFN, Trieste ; CAS, Beijing) ; Di Pietro, Lorenzo (Trieste U. ; INFN, Trieste) ; Gorbenko, Victor (Ecole Polytechnique, Lausanne) ; Komatsu, Shota (CERN) ; Sacchi, Veronica (Ecole Polytechnique, Lausanne)
Motivated by a question of defining gauge-invariant observables in cosmology and by the close connection between perturbation theory in de Sitter (dS) and Anti-de Sitter (AdS), we study scalar electrodynamics in AdS in setups that are largely unexplored but relevant for dS physics. [...]
arXiv:2601.04321. - 2026 - 79.
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2026-01-20
06:54
Quantum properties of heavy-fermion pairs at a lepton collider with polarised beams / Altakach, Mohammad Mahdi (Lebanese U.) ; Lamba, Priyanka (Bologna U. ; INFN, Bologna) ; Maltoni, Fabio (Bologna U. ; INFN, Bologna ; Louvain U., CP3 ; CERN) ; Sakurai, Kazuki (Warsaw U.)
We investigate the quantum properties of heavy-fermion pairs, such as $t\bar t$ or $τ^+τ^-$, produced in lepton-lepton collisions with polarised beams. [...]
arXiv:2601.09558. - 2026 - 46.
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