CERN Accelerating science

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新增:
2025-04-19
04:02
Natural complex plane for kaon CKM data: framework, status and future / Dery, Avital (CERN)
Kaon physics can be used to independently determine three out of the four parameters of the CKM matrix, without any B physics input. [...]
CERN-TH-2025-077 ; arXiv:2504.12386.
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2025-04-19
04:01
Probing CP-Violating Neutral Triple Gauge Couplings at Electron-Positron 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.)
We study the forms of CP-violating (CPV) neutral triple gauge couplings (nTGCs) that can be realized via dimension-8 operators in the Standard Model Effective Field Theory (SMEFT). [...]
KCL-PH-TH/2025-01 ; CERN-TH-2025-002 ; arXiv:2504.13135.
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2025-04-19
04:01
Geometry of soft scalars at one loop / Cohen, Timothy (CERN ; EPFL, Lausanne, LPTP ; Oregon U.) ; Fadakar, Ipak (EPFL, Lausanne, LPTP ; Pisa, Scuola Normale Superiore) ; Helset, Andreas (CERN) ; Nardi, Filippo (EPFL, Lausanne, LPTP)
We extend the soft theorems for scattering amplitudes of scalar effective field theories to one-loop order. [...]
CERN-TH-2025-081 ; arXiv:2504.12371.
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2025-04-19
04:00
Extended scalar sectors from all angles (in 15 minutes) / Robens, Tania (Boskovic Inst., Zagreb ; CERN)
In this proceedings contribution, I briefly summarize various aspects that are important in the discussions of new physics searches with novel scalar states, at current and future colliders. [...]
RBI-ThPhys-2025-21 ; CERN-TH-2025-083 ; arXiv:2504.13014.
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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.
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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.
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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.
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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.
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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.
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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.
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