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2025-07-19
04:50
Multi-loop spectra in general scalar EFTs and CFTs / Henriksson, Johan (CERN) ; Herzog, Franz (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Kousvos, Stefanos R. ; Roosmale Nepveu, Jasper
We consider the most general effective field theory (EFT) Lagrangian with scalar fields and derivatives, and renormalise it to substantially higher loop order than existing results in the literature. [...]
CERN-TH-2025-135 ; arXiv:2507.12518. - 6.
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2025-07-17
04:10
Towards NNLO QCD predictions for off-shell top-quark pair production and decays / Buonocore, Luca (CERN) ; Grazzini, Massimiliano (Zurich U.) ; Kallweit, Stefan (Zurich U.) ; Lindert, Jonas M. (Sussex U.) ; Savoini, Chiara (Munich, Tech. U.)
We consider QCD radiative corrections to $W^+W^-b {\bar b}$ production with leptonic decays and massive bottom quarks at the LHC. [...]
ZU-TH-47/25 ; TUM-HEP-1565/25 ; CERN-TH-2025-130 ; arXiv:2507.11410. - 70.
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2025-07-15
04:43
Real-Time Dynamics in a (2+1)-D Gauge Theory: The Stringy Nature on a Superconducting Quantum Simulator / Cobos, Jesús (Basque U., Bilbao) ; Fraxanet, Joana (IBM Watson Res. Ctr.) ; Benito, César (Madrid, IFT) ; di Marcantonio, Francesco (Basque U., Bilbao) ; Rivero, Pedro (IBM Watson Res. Ctr.) ; Kapás, Kornél (Wigner RCP, Budapest) ; Werner, Miklós Antal (Wigner RCP, Budapest) ; Legeza, Örs (Wigner RCP, Budapest ; TUM-IAS, Munich ; DESY) ; Bermudez, Alejandro (Madrid, IFT) ; Rico, Enrique (Basque U., Bilbao ; Donostia Intl. Phys. Ctr., San Sebastian ; CERN)
Understanding the confinement mechanism in gauge theories and the universality of effective string-like descriptions of gauge flux tubes remains a fundamental challenge in modern physics. [...]
CERN-TH-2025-111 ; arXiv:2507.08088. - 25.
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2025-07-11
04:20
Krylov Complexity / Rabinovici, Eliezer (Hebrew U. ; CERN) ; Sánchez-Garrido, Adrián (U. Southampton (main)) ; Shir, Ruth (Luxembourg U.) ; Sonner, Julian (Harvard U., Phys. Dept. ; CERN ; U. Geneva (main))
We introduce and review a new complexity measure, called `Krylov complexity', which takes its origins in the field of quantum-chaotic dynamics, serving as a canonical measure of operator growth and spreading. [...]
arXiv:2507.06286 ; CERN-TH-2025-128. - 90.
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2025-07-10
04:58
SMEFT ATLAS: The Landscape Beyond the Standard Model / Aebischer, Jason (CERN) ; Buras, Andrzej J. (TUM-IAS, Munich) ; Kumar, Jacky (Los Alamos)
The Standard Model Effective Field Theory (SMEFT) based on the unbroken gauge group $\text{SU(3)}_C\otimes\text{SU(2)}_L\otimes\text{U(1)}_Y$ and containing only particles of the Standard Model (SM) has developed in the last decade to a mature field. [...]
AJB-25-1 ; CERN-TH-2025-129 ; LA-UR-24-24665 ; arXiv:2507.05926. - 293.
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2025-07-09
08:26
Superadditivity at Large Charge / Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Fadakar, Ipak (EPFL, Lausanne, LPTP ; Pisa, Scuola Normale Superiore) ; Gomes, Andrew (EPFL, Lausanne, LPTP) ; Monin, Alexander (South Carolina U.) ; Rattazzi, Riccardo (EPFL, Lausanne, LPTP)
The weak gravity conjecture has been invoked to conjecture that the dimensions of charged operators in a CFT should obey a superadditivity relation (sometimes referred to as convexity). In this paper, we study superadditivity of the operator spectrum in theories expanded about the semi-classical saddle point that dominates correlators of large charge operators. [...]
arXiv:2503.16603; CERN-TH-2025-036.- 2025 - 27 p. - Published in : JHEP 2507 (2025) 113 Fulltext: 2503.16603 - PDF; document - PDF;

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2025-07-09
07:48
Challenging $\bar{B}_{(s)}\to D_{(s)}^{(*)}$ Form Factors with the Heavy Quark Expansion / Bordone, Marzia (Siegen U. ; CERN ; Zurich U.) ; Gubernari, Nico (Cambridge U., DAMTP) ; Jung, Martin (Turin U. ; INFN, Turin) ; van Dyk, Danny (Durham U., IPPP)
Recent publications by three lattice QCD collaborations have provided an unprecedented wealth of theoretical predictions for the $\bar{B}_q \to D_q^{(*)}$ form factors, for spectator flavours $q=u/d$ and $q=s$. [...]
CERN-TH-2025-092 ; EOS-2025-03 ; IPPP/25/25 ; P3H-25-032 ; SI-HEP-2025-10 ; ZU-TH 35/25 ; arXiv:2507.03569. - 36.
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2025-07-04
04:00
Transmutation of $^{16}$O and $^{20}$Ne at the Large Hadron Collider / Nijs, Govert (CERN) ; van der Schee, Wilke (CERN ; Utrecht U. (main) ; Nikhef, Amsterdam ; Tech. U., Dortmund (main))
In July 2025 the Large Hadron Collider (LHC) will collide $^{16}$O$^{16}$O and $^{20}$Ne$^{20}$Ne isotopes in a quest to understand the physics of ultrarelativistic light ion collisions. [...]
CERN-TH-2025-127 ; arXiv:2507.01659. - 3.
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2025-07-01
04:40
S-wave flavor-singlet meson mixing in QCD with light and charm quarks / Urrea-Niño, Juan Andrés (Trinity Coll., Dublin ; Wuppertal U.) ; Finkenrath, Jacob (CERN) ; Höllwieser, Roman (Wuppertal U.) ; Knechtli, Francesco (Wuppertal U.) ; Korzec, Tomasz (Wuppertal U.) ; Peardon, Michael (Trinity Coll., Dublin)
We investigate the mixing between flavor-singlet light meson and charmonium operators in the S-wave channels, i.e. [...]
WUB/25-04 ; CERN-TH-2025-114 ; arXiv:2506.22132. - 14.
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2025-06-28
05:01
Probing Neutral Triple Gauge Couplings via $ZZ$ Production at $e^+e^-$ Colliders / Ellis, John (Shanghai Jiao Tong U. ; King's Coll. London ; CERN) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiao Tong U. ; Tsinghua U., Beijing ; Peking U., CHEP) ; Xiao, Rui-Qing (Peking U.) ; Zeng, Shi-Ping (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiao Tong U.)
Neutral triple gauge couplings (nTGCs) first arise from the dimension-8 operators of the Standard Model Effective Field Theory (SMEFT), rather than the dimension-4 SM Lagrangian and dimension-6 SMEFT operators, opening up a unique window for probing new physics at the dimension-8 level. [...]
KCL-PH-TH/2025-28 ; CERN-TH-2025-122 ; arXiv:2506.21433. - 2024-11-07 - 32.
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