CERN Accélérateur de science

TH Articles

Derniers ajouts:
2024-01-18
07:33
Isospin-breaking corrections to weak decays: the current status and a new infrared improvement / Di Carlo, Matteo
We provide an overview of the current state of lattice calculations concerning isospin-breaking corrections in weak decays, focusing in particular on leptonic decays of light pseudoscalar mesons. We examine the two currently existing calculations, placing a particular emphasis on the role of electromagnetic finite-volume corrections. [...]
arXiv:2401.07666; CERN-TH-2024-005.- 2024-01-23 - 18 p.
- Published in : PoS: LATTICE2023 (2024) , pp. 120 Fulltext: 2401.07666 - PDF; document - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.120

Notice détaillée - Notices similaires
2024-01-17
04:28
Brickwall in Rotating BTZ: A Dip-Ramp-Plateau Story / Das, Suman (HBNI, Mumbai) ; Kundu, Arnab (HBNI, Mumbai ; CERN)
In this article, building on our recent investigations and motivated by the fuzzball-paradigm, we explore normal modes of a probe massless scalar field in the rotating BTZ-geometry in an asymptotically AdS spacetime and correspondingly obtain the Spectral Form Factor (SFF) of the scalar field. In particular, we analyze the SFF obtained from the single-particle partition function. [...]
arXiv:2310.06438; CERN-TH-2023-187.- 2024-02-08 - 33 p. - Published in : JHEP 2402 (2024) 049 Fulltext: 2310.06438 - PDF; document - PDF;

Notice détaillée - Notices similaires
2023-12-26
04:22
Extrapolating semileptonic form factors using Bayesian-inference fits regulated by unitarity and analyticity / Flynn, Jonathan ; Juettner, Andreas (CERN ; Southampton U.) ; Tsang, Tobias (CERN)
We discuss our recently proposed model-independent framework for fitting hadronic form-factor data, which are often only available at discrete kinematical points, using parameterisations based on unitarity and analyticity. The accompanying dispersive bound on the form factors (unitarity constraint) is used to regulate the ill-posed fitting problem and allow model-independent predictions over the entire physical range. [...]
arXiv:2312.14631; CERN-TH-2023-248.- 2023-12-27 - 7 p. - Published in : PoS LATTICE2023 (2024) 239 Fulltext: 2312.14631 - PDF; document - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.239

Notice détaillée - Notices similaires
2023-12-23
04:13
Muon $g-2$: Lattice calculations of the hadronic vacuum polarization / Kuberski, Simon (CERN)
The experimental uncertainty on the anomalous magnetic moment of the muon has been significantly reduced with the recent results of the Fermilab $g-2$ experiment, and a further reduction is expected in the near future. The precision of the Standard Model prediction needs to improve correspondingly to increase the sensitivity of tests for physics beyond the Standard Model. [...]
arXiv:2312.13753; CERN-TH-2023-244; MITP-23-079.- 2024-01-15 - 24 p. - Published in : PoS LATTICE2023 (2024) 125 Fulltext: 2312.13753 - PDF; document - PDF;
In : 40th International Symposium on Lattice Field Theory (Lattice 2023), Fermilab, Batavia, IL, United States, 30 Jul - 5 Aug 2023, pp.125

Notice détaillée - Notices similaires
2023-12-21
05:17
Interference Effects in $\mathbf{gg \to H \to Z \gamma}$ Beyond Leading Order / Buccioni, Federico (Munich, Tech. U.) ; Devoto, Federica (U. Oxford (main)) ; Djouadi, Abdelhak (Granada U.) ; Ellis, John (King's Coll. London ; CERN) ; Quevillon, Jérémie (Annecy, LAPTH) ; Tancredi, Lorenzo (Munich, Tech. U.)
The ATLAS and CMS collaborations at the LHC have recently announced evidence for the rare Higgs boson decay into a $Z$ boson and a photon. We analyze the interference between the process $gg\! \to \! H \! \to \! Z \gamma$ induced by loops of heavy particles, which is by far the dominant contribution to the signal, and the continuum $gg \to Z \gamma$ QCD background process mediated by light quark loops. [...]
arXiv:2312.12384; KCL-PH-TH/2023-70; CERN-TH-2023-228; TUM-HEP-1488/23; OUTP-23-18P.- 2024-03-24 - 5 p. - Published in : Phys. Lett. B 851 (2024) 138596 Fulltext: PDF;

Notice détaillée - Notices similaires
2023-12-13
05:10
The Higgs-gluon form factor at three loops in QCD with three mass scales / Niggetiedt, Marco (Garching, Max Planck Inst.) ; Usovitsch, Johann (CERN)
We report on the complete three-loop corrections to the Higgs-gluon form factor in QCD. While previous calculations are based on QCD with a single heavy quark of arbitrary mass, we extend the study to QCD involving two different massive quark flavors. [...]
arXiv:2312.05297; MPP-2023-280; CERN-TH-2023-236.- 2024-02-14 - 22 p. - Published in : JHEP 2402 (2024) 087 Fulltext: document - PDF; 2312.05297 - PDF;

Notice détaillée - Notices similaires
2023-12-07
04:28
Probing Supermassive Black Hole Seed Scenarios with Gravitational-wave Measurements / Ellis, John (King's Coll. London ; CERN) ; Fairbairn, Malcolm (King's Coll. London) ; Urrutia, Juan ; Vaskonen, Ville
The process whereby the supermassive black holes populating the centers of galaxies have been assembled remains to be established, with the relative importance of seeds provided by collapsed Population-III stars, black holes formed in nuclear star clusters via repeated mergers, or direct collapses of protogalactic disks yet to be determined. In this paper we study the prospects for casting light on this issue by future measurements of gravitational waves emitted during the inspirals and mergers of pairs of intermediate-mass black holes, discussing in particular the roles of prospective measurements by LISA and the proposed atom interferometers AION and AEDGE. [...]
arXiv:2312.02983; KCL-PH-TH/2023-69; CERN-TH-2023-227.- 2024-03-11 - 7 p. - Published in : Astrophys. J. 964 (2024) 11 Fulltext: document - PDF; 2312.02983 - PDF;

Notice détaillée - Notices similaires
2023-12-02
08:43
A Non-Perturbative Mixed Anomaly and Fractional Hydrodynamic Transport / Davighi, Joe (CERN) ; Lohitsiri, Nakarin (Durham U., Dept. of Math.) ; Poovuttikul, Napat (Chulalongkorn U.)
We present a new non-perturbative 't Hooft anomaly afflicting a quantum field theory with symmetry group $G=U(1)\times \mathbb{Z}_2$ in four dimensions. We use the Adams spectral sequence to compute that the bordism group $\Omega^\text{Spin}_5(BG)$, which classifies anomalies that remain when perturbative anomalies cancel, is $\mathbb{Z}_4$. [...]
arXiv:2311.18023; CERN-TH-2023-213.- 2024-03-20 - 36 p. - Published in : JHEP 2403 (2024) 119 Fulltext: 2311.18023 - PDF; document - PDF;

Notice détaillée - Notices similaires
2023-11-28
08:42
Relating $\beta'_*$ and $\gamma'_{Q*}$ in the ${\cal N}=1$ SQCD Conformal Window / Shifman, Mikhail (Minnesota U., Theor. Phys. Inst.) ; Zwicky, Roman (U. Edinburgh, Higgs Ctr. Theor. Phys. ; CERN)
In this note we show that $\beta'_*$, the $\beta$-function slopes in the electric and magnetic theories are equal at the corresponding infrared fixed points. This follows from the scaling of the correlators of the trace of the energy momentum tensors. [...]
arXiv:2310.16449; FTPI-MINN-23-19; CERN-TH-2023-188; UMN-TH-4227/23.- 2023-12-01 - 8 p. - Published in : Phys. Rev. D 108 (2023) 114013 Fulltext: 2310.16449 - PDF; Publication - PDF;

Notice détaillée - Notices similaires
2023-11-10
05:03
Beyond the Standard Model prospects for kaon physics at future experiments / D'Ambrosio, G. (INFN, Naples) ; Mahmoudi, F. (IP2I, Lyon ; CERN ; IUF, Paris) ; Neshatpour, S. (IP2I, Lyon)
Rare kaon decays offer a powerful tool for investigating new physics in $s\to d$ transitions. Currently, many of the interesting decay modes are either measured with rather large uncertainties compared to their theoretical predictions or have not yet been observed. [...]
arXiv:2311.04878; CERN-TH-2023-208.- 2024-02-22 - 16 p. - Published in : JHEP 2402 (2024) 166 Fulltext: document - PDF; 2311.04878 - PDF;

Notice détaillée - Notices similaires