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CERN Accelerating science

CERN-TH

Darreres entrades:
2026-04-17
06:27
$N$-Jettiness Soft Functions Made Simple / Buonocore, Luca (CERN) ; Delto, Maximilian (CERN) ; Melnikov, Kirill (Karlsruhe U., TTP) ; Monni, Pier Francesco (CERN) ; Pikelner, Andrey (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Vita, Gherardo (CERN)
We present a new method to compute the soft function for the $N$-Jettiness variable for arbitrary $N$ at high perturbative orders in QCD. [...]
TTP26-012 ; P3H-26-027 ; CERN-TH-2026-055 ; arXiv:2604.13167.
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2026-04-17
06:16
Resonance- and Width-aware Parton Shower Evolution and NLO Matching / Höche, Stefan (Fermilab) ; Reichelt, Daniel (CERN)
We introduce a technique for the next-to-leading order accurate simulation of $e^+e^-\to W^+W^-b\bar{b}$ that respects the resonant nature of the process above and near the top-quark pair production threshold. [...]
FERMILAB-PUB-26-0230-T ; CERN-TH-2026-085 ; MCNET-26-06 ; arXiv:2604.13978.
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2026-04-15
05:13
Quantum simulating multi-particle processes in high energy nuclear physics: dijet production and color (de)coherence / Barata, João (CERN) ; Li, Meijian (Santiago de Compostela U., IGFAE) ; Qian, Wenyang (Santiago de Compostela U., IGFAE ; Hua-Zhong Normal U.) ; Salgado, Carlos A. (Santiago de Compostela U., IGFAE) ; Silva, João M. (LIP, Lisbon ; Lisbon, IST ; Granada U.)
Hard scattering events in high-energy collisions produce highly virtual partons that subsequently fragment into collimated hadronic cascades. [...]
CERN-TH-2026-082 ; arXiv:2604.11616.
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2026-04-14
04:38
On Exclusive Coherent Production of Bosons in Electron-Proton Collisions / 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 ; Zurich U.)
We study the exclusive electroproduction process $e+p\to e'+p'+X$, with $X$ a single-particle final state, in the forward-proton kinematics relevant for the future Electron-Ion Collider (EIC). [...]
arXiv:2604.08667 ; CERN-TH-2026-047.
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2026-04-14
04:36
Gravitational Memory from Hairy Binary Black Hole Mergers / Gasparotto, Silvia (CERN) ; Zosso, Jann (Bohr Inst.) ; Aresté Saló, Llibert (Leuven U.) ; Doneva, Daniela D. (U. Valencia (main) ; U. Tubingen) ; Yazadjiev, Stoytcho S. (Sofia U. (main))
Gravitational-wave memory is a low-frequency, non-oscillatory component of the radiation field that provides a potentially powerful but as yet undetected probe of strong-field gravity. [...]
CERN-TH-2026-086 ; arXiv:2604.09350.
- 26.
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2026-04-14
04:34
How well can the QCD axion hide? / Lee, Sung Mook (CERN) ; Ramos, Maria (CERN) ; Vilches, Fuensanta (Granada U.)
Motivated UV frameworks generically predict the existence of multiple axion fields. [...]
CERN-TH-2026-087 ; arXiv:2604.08657.
- 19.
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2026-04-14
04:34
Gardening on the Moon: An Advection-Diffusion Model to Guide the Search for Supernova Debris in the Lunar Regolith / Costello, Emily S. (U. Hawaii (main)) ; Ellis, John (CERN ; King's Coll. London (main)) ; Fields, Brian D. (Illinois U., Urbana (main)) ; Surman, Rebecca (U. Notre Dame (main)) ; Wang, Xilu (CAS, Beijing)
The vertical redistribution of materials in the lunar regolith - ranging from continuously produced space-weathering products to sporadic pulses of supernova- or kilonova-derived isotopes - remains a fundamental problem in planetary science. [...]
KCL-PH-TH/2026-10 ; CERN-TH-2026-073 ; arXiv:2604.09524.
- 14.
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2026-04-11
05:08
Lattice determination of the higher-order hadronic vacuum polarization contribution to the muon $g-2$ / Beltran, Arnau (U. Mainz, PRISMA) ; Conigli, Alessandro (Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Kuberski, Simon (CERN) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; CERN) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Bonn U., HISKP) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI)
We present the first lattice QCD calculation of the next-to-leading order (NLO) hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment with sub-percent precision. [...]
arXiv:2604.08351 ; MITP-26-017 ; CERN-TH-2026-080.
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2026-04-10
04:19
A first study of strong isospin breaking effects in lattice QCD using truncated polynomials / Albandea, David (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Kuberski, Simon (CERN) ; Panadero, Fernando P. (Madrid, IFT)
Computing derivatives of observables with respect to parameters of the theory is a powerful tool in lattice QCD, as it allows the study of physical effects not directly accessible in the original Monte Carlo simulation. [...]
arXiv:2603.24420 ; MITP-26-015 ; CERN-TH-2026-059 ; IFT-UAM/CSIC-26-38.
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2026-04-09
07:55
Influence of tides and self-gravity on Ultra-Light Dark Matter Bounds from Dwarf Galaxies / Caputo, Andrea (CERN ; Weizmann Inst. ; U. Rome La Sapienza (main) ; INFN, Rome) ; Teodori, Luca (IAC, La Laguna ; Laguna U., Tenerife)
Dwarf spheroidal galaxies provide some of the most sensitive astrophysical probes of ultra-light dark matter (ULDM), but the inferred constraints can be affected by two important systematics: tidal interactions with the Milky Way, which reduce ULDM-induced dynamical heating, and stellar self-gravity, which can become relevant if the stellar component was more compact at earlier times. [...]
arXiv:2604.01278 ; CERN-TH-2026-065.
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