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新增：
2025-04-18
04:08
How Accidental was Inflation? / Antoniadis, Ignatios (Chulalongkorn U. ; Paris, LPTHE) ; Ellis, John (King's Coll. London ; CERN) ; Ke, Wenqi (Minnesota U.) ; Nanopoulos, Dimitri V. (CERN ; Athens Academy ; Texas A-M) ; Olive, Keith A. (Minnesota U.)
Data on the cosmic microwave background (CMB) are discriminating between different models of inflation, disfavoring simple monomial potentials whilst being consistent with models whose predictions resemble those of the Starobinsky $R + R^2$ cosmological model. [...]
UMN-TH-4418/25 ; FTPI-MINN-25/03 ; KCL-PH-TH/2025-09 ; CERN-TH-2025-076 ; arXiv:2504.12283. - 28.
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2025-04-18
04:03
Search for additional scalar bosons within the Inert Doublet Model in a final state with two leptons at the FCC-ee / Bal, Anubha (Imperial Coll., London) ; Curtis, Edward (Imperial Coll., London) ; Magnan, Anne-Marie (Imperial Coll., London) ; Maier, Benedikt (Imperial Coll., London) ; Robens, Tania (Boskovic Inst., Zagreb ; CERN) ; Wardle, Nicholas (Imperial Coll., London)
In this work, we investigate the discovery reach of a new physics model, the Inert Doublet Model, at an $e^+e^-$ machine with centre-of-mass energies $\sqrt{s}$ of 240 and 365 GeV. [...]
RBI-ThPhys-2025-08 ; CERN-TH-2025-069 ; arXiv:2504.12178. - 18.
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2025-04-16
04:04
Comparison of smoothening flows for the topological charge in QCD-like theories / Butti, Pietro (Southern Denmark U., CP3-Origins) ; Della Morte, Michele (Southern Denmark U., CP3-Origins) ; Jäger, Benjamin (Southern Denmark U., CP3-Origins ; U. Southern Denmark, Odense, DIAS) ; Martins, Sofie (Southern Denmark U., CP3-Origins) ; Tsang, J. Tobias (CERN)
We investigate properties of the topological charge for several SU(NC) gauge field ensembles for NC = 4, 5, 6 with a single fermion in the two-index anti-symmetric representation, covering multiple lattice spacings at otherwise approximately constant physical parameters. [...]
CERN-TH-2025-079 ; arXiv:2504.10197. - 9.
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2025-04-15
04:56
Holographic duality from Howe duality: Chern-Simons gravity as an ensemble of code CFTs / Dymarsky, Anatoly (Kentucky U.) ; Henriksson, Johan (IPhT, Saclay ; CERN) ; McPeak, Brian (McGill U. ; Syracuse U.)
We discuss the holographic correspondence between 3d "Chern-Simons gravity" and an ensemble of 2d Narain code CFTs. [...]
CERN-TH-2025-060 ; arXiv:2504.08724. - 38.
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2025-04-12
04:52
Exploratory calculation of the rare hyperon decay $\Sigma^+ \to p \ell^+ \ell^-$ from lattice QCD / Erben, Felix (CERN) ; Gülpers, Vera (Edinburgh U.) ; Hansen, Maxwell T. (Edinburgh U.) ; Hodgson, Raoul (Edinburgh U. ; DESY, Zeuthen) ; Portelli, Antonin (Edinburgh U.)
The rare hyperon decay $\Sigma^+ \to p \ell^+ \ell^-$ is a flavour-changing neutral current process mediated by an $s \to d$ transition that occurs only at loop level within the Standard Model. [...]
CERN-TH-2025-055 ; DESY-25-057 ; arXiv:2504.07727. - 35.
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2025-04-11
04:28
New physics particles mixing with mesons: production in the fragmentation chain / Kyselov, Yehor (Taras Shevchenko U.) ; Mrenna, Stephen (Cincinnati U. ; Fermilab) ; Ovchynnikov, Maksym (CERN)
A class of extensions to the Standard Model adds hypothetical long-lived particles (LLPs) that have mass- or kinetic-mixing with neutral mesons, such as pions or rho mesons. [...]
CERN-TH-2025-073 ; FERMILAB-PUB-25-0200-CSAID ; arXiv:2504.06828. - 26 p, 26.
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2025-04-11
04:26
Les Houches 2023 - Physics at TeV Colliders: Report on the Standard Model Precision Wishlist / Huss, Alexander (CERN) ; Huston, Joey (Michigan State U.) ; Jones, Stephen (Durham U., IPPP) ; Pellen, Mathieu (Freiburg U.) ; Röntsch, Raoul (INFN, Milan ; U. Milan (main))
Les Houches returned to an in-person format in 2023 and the bi-yearly tradition of updating the standard model precision wishlist has continued. [...]
CERN-TH-2025-071 ; FR-PHENO-2025-005 ; IPPP/25/19 ; TIF-UNIMI-2025-9 ; arXiv:2504.06689. - 100.
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2025-04-10
04:56
Logarithmically-accurate and positive-definite NLO shower matching / van Beekveld, Melissa (NIKHEF, Amsterdam) ; Ferrario Ravasio, Silvia (CERN) ; Helliwell, Jack (Monash U.) ; Karlberg, Alexander (CERN) ; Salam, Gavin P. (Oxford U., Theor. Phys. ; U. Oxford (main)) ; Scyboz, Ludovic (Monash U.) ; Soto-Ontoso, Alba (Granada U.) ; Soyez, Gregory (IPhT, Saclay) ; Zanoli, Silvia (Oxford U., Theor. Phys.)
We present methods to achieve NLL+NLO accurate parton showering for processes with two coloured legs: neutral- and charged-current Drell-Yan, and Higgs production in $pp$ collisions, as well as DIS and $e^+e^-$ to jets. [...]
CERN-TH-2025-004 ; OUTP-25-01P ; Nikhef 2025-003 ; arXiv:2504.05377. - 50.
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2025-04-08
04:07
Inclusive semileptonic decays from lattice QCD: analysis of systematic effects / Kellermann, Ryan (KEK, Tsukuba) ; Barone, Alessandro (U. Mainz, PRISMA) ; Elgaziari, Ahmed (U. Southampton (main)) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Hu, Zhi (KEK, Tsukuba) ; Jüttner, Andreas (U. Southampton (main) ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba)
Lattice QCD calculations of inclusive semileptonic decay rates involve new types of systematic effects, such as truncation errors in the estimation of energy integrals, or finite-volume effects for multi-body final states. [...]
KEK-CP-0407 ; CERN-TH-2025-059 ; arXiv:2504.03358. - 56.
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2025-04-05
04:44
Gravitational Wave with Domain Wall Dominance / Hong, Sungwoo (KAIST, Taejon) ; Lee, Sung Mook (KAIST, Taejon ; CERN) ; Liang, Qiuyue (Tokyo U., IPMU)
Domain walls (DWs) can be produced when a discrete symmetry is spontaneously broken, and long-lived DWs can dominate the energy density of the universe. [...]
CERN-TH-2025-070 ; arXiv:2504.02462. - 15.
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