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TH Preprints

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2025-05-29
04:35
The anomalous magnetic moment of the muon in the Standard Model: an update / Aliberti, R. (Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Aoyama, T. (Tokyo U., ISSP) ; Balzani, E. (INFN, Padua ; Padua U.) ; Bashir, A. (IFM-UMSNH, Michoacan ; Escuela Poli. Sup. U., Huelva) ; Benton, G. (Illinois U., Urbana) ; Bijnens, J. (Lund U.) ; Biloshytskyi, V. (Mainz U., Inst. Phys. ; U. Mainz, PRISMA) ; Blum, T. (Connecticut U. ; RIKEN BNL) ; Boito, D. (Sao Paulo U., Sao Carlos) ; Bruno, M. (Milan Bicocca U. ; INFN, Milan Bicocca) et al.
We present the current Standard Model (SM) prediction for the muon anomalous magnetic moment, $a_\mu$, updating the first White Paper (WP20) [1]. [...]
CERN-TH-2025-101 ; FERMILAB-PUB-25-0344-T ; INT-PUB-25-015 ; KEK Preprint 2025-22 ; LTH 1403 ; MITP-25-037 ; UWThPh 2025-15 ; ZU-TH 37/25 ; IPARCOS-UCM-25-029 ; arXiv:2505.21476. - 188.
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2025-05-24
04:08
Cobordism Utopia: U-Dualities, Bordisms, and the Swampland / Braeger, Noah (Pennsylvania U., Dept. Math.) ; Debray, Arun (U. Kentucky, Lexington) ; Dierigl, Markus (CERN) ; Heckman, Jonathan J. (Pennsylvania U., Dept. Math. ; Pennsylvania U.) ; Montero, Miguel (Madrid, IFT)
The U-dualities of maximally supersymmetric supergravity theories lead to celebrated non-perturbative constraints on the structure of quantum gravity. [...]
CERN-TH-2025-103 ; IFT-025-51 ; arXiv:2505.15885. - 124.
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2025-05-22
04:46
Building Next-to-Next Leading Logarithmic parton showers: the PanScales recipe / Ferrario Ravasio, Silvia (CERN)
Parton showers lie at the core of Shower Monte Carlo event generators, the default theoretical tools used to interpret collider data. [...]
arXiv:2505.13395 ; CERN-TH-2025-102. - 2025-05-19 - 4.
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2025-05-21
04:09
Extended scalar sectors from all angles -- Mostly at lepton colliders / Robens, Tania (Boskovic Inst., Zagreb ; CERN)
I briefly discuss the current state of the art for models with extended scalar sectors and give examples for corresponding investigations, with a focus on processes at lepton colliders..
RBI-ThPhys-2025-20 ; CERN-TH-2025-082 ; arXiv:2504.11969. - 11.
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2025-05-20
04:06
The LHC has ruled out Supersymmetry -- really? / Constantin, L. (LPSC, Grenoble) ; Kraml, S. (LPSC, Grenoble) ; Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris)
Despite early hopes that the Large Hadron Collider (LHC) would quickly unveil supersymmetric particles, none have been detected to date. [...]
CERN-TH-2025-100 ; arXiv:2505.11251. - 8.
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2025-05-20
04:04
Spontaneous Magnetogenesis at the Electroweak Phase Transition / Domcke, Valerie (CERN) ; Ema, Yohei (CERN) ; Patel, Teerthal (Vanderbilt U.)
Spontaneous CP violation during the electroweak phase transition can induce a twisting of the magnetic field configuration of Standard Model dumbbells, resulting in sizable intergalactic magnetic fields and a small baryon asymmetry, in agreement with observations. [...]
CERN-TH-2025-089 ; arXiv:2505.10637. - 26.
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2025-05-18
05:11
QCD splitting functions beyond kinematical limits / Campbell, John M. (Fermilab) ; Höche, Stefan (Fermilab) ; Knobbe, Max (Fermilab) ; Preuss, Christian T. (Gottingen U.) ; Reichelt, Daniel (CERN)
We present a systematic decomposition of QCD splitting functions into scalar dipole radiators and pure splitting remainders up to second order in the strong coupling. [...]
FERMILAB-PUB-25-0276-T ; CERN-TH-2025-091 ; MCNET-25-09 ; arXiv:2505.10408. - 37.
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2025-05-13
04:08
pNGB Higgs Naturalness at a Tipping Point / McCullough, Matthew (CERN) ; Menkara, Adriana (DESY) ; Salvioni, Ennio (Sussex U.)
In scenarios where the Higgs is viewed as a pseudo Nambu-Goldstone boson (pNGB) the question of naturalness finds itself, from a phenomenological perspective, at a tipping point between direct searches and precision. [...]
CERN-TH-2025-067 ; DESY-25-052 ; arXiv:2505.06052. - 21.
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2025-05-07
04:03
The Simplest Dark Matter Model at the Edge of Perturbativity / Escudero, Miguel ; Hambye, Thomas
Increasingly sensitive direct detection dark matter experiments are testing important regions of parameter space for WIMP dark matter and pushing many models to the multi-TeV regime. [...]
CERN-TH-2025-087 ; ULB-TH/25-04 ; arXiv:2505.02408. - 5.
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2025-05-06
04:31
Gravitational Wave Memory of Primordial Black Hole Mergers / Gasparotto, Silvia (Barcelona, IFAE) ; Franciolini, Gabriele (CERN) ; Domcke, Valerie (CERN)
The gravitational wave signal of binary compact objects has two main contributions at frequencies below the characteristic merger frequency: the gravitational wave signal associated with the early inspiral stage of the binary and the non-linear gravitational wave memory. [...]
CERN-TH-2025-051 ; arXiv:2505.01356. - 17.
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