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Basis for Anomalous Quartic Gauge Couplings
/ Durieux, Gauthier (Louvain U., CP3) ; Remmen, Grant N. (New York U., CCPP) ; Rodd, Nicholas L. (LBL, Berkeley ; UC, Berkeley) ; Éboli, O.J.P. (Sao Paulo U.) ; Gonzalez-Garcia, M.C. (YITP, Stony Brook ; ICREA, Barcelona ; Barcelona, Autonoma U.) ; Kondo, Dan (Tokyo U., IPMU ; Tokyo U., ICRR) ; Murayama, Hitoshi (LBL, Berkeley ; UC, Berkeley ; Tokyo U., IPMU ; Tokyo U., ICRR) ; Okabe, Risshin (Tokyo U., IPMU ; Tokyo U., ICRR)
In this note, we give a definitive basis for the dimension-eight operators leading to quartic - but no cubic - interactions among electroweak gauge bosons. These are often called anomalous quartic gauge couplings, or aQGCs. [...]
CERN-LHCEFTWG-2024-002; CERN-LPCC-2024-002; arXiv:2411.02483.-
Geneva : CERN, 2024 - 8 p.
Fulltext: CERN-LHCEFTWG-2024-002 - PDF; 2411.02483 - PDF; arXiv v1: PDF;
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NANOGrav results and LIGO-Virgo primordial black holes in axion-like curvaton model
/ Inomata, Keisuke (Chicago U., KICP) ; Kawasaki, Masahiro (Tokyo U., ICRR ; Tokyo U., IPMU) ; Mukaida, Kyohei (CERN ; DESY) ; Yanagida, Tsutomu T. (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiao Tong U. ; Tokyo U., IPMU)
We discuss a possible connection between the recent NANOGrav results and the primordial black holes (PBHs) for the LIGO-Virgo events. In particular, we focus on the axion-like curvaton model, which provides a sizable amount of PBHs and GWs induced by scalar perturbations around the NANOGrav frequency range. [...]
arXiv:2011.01270; CERN-TH-2020-182; DESY-20-188; DESY 20-188.-
2021-04-01 - 7 p.
- Published in : Phys. Rev. Lett. 126 (2021) 131301
Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF;
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Theoretical developments in the SMEFT at dimension-8 and beyond
/ Alioli, Simone (INFN, Milan Bicocca) ; Boughezal, Radja (Argonne) ; Cao, Weiguang (Tokyo U., IPMU ; Tokyo U.) ; Chala, Mikael (Granada U., Theor. Phys. Astrophys.) ; Díaz-Carmona, Álvaro (Granada U., Theor. Phys. Astrophys.) ; Bakshi, Supratim Das (Granada U., Theor. Phys. Astrophys.) ; Durieux, Gauthier (CERN) ; Gráf, Lukáš (UC, Berkeley ; UC, San Diego) ; Guedes, Guilherme (Granada U., Theor. Phys. Astrophys.) ; Henning, Brian Quinn (EPFL, Lausanne, LPTP) et al.
In this contribution to the Snowmass 2021 process we review theoretical developments in the Standard Model Effective Field Theory (SMEFT) with a focus on effects at the dimension-8 level and beyond. [...]
arXiv:2203.06771.
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37.
eConf - Fulltext
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Constraining Gluonic Quartic Gauge Coupling Operators with $gg \to \gamma \gamma$
/ Ellis, John (CERN ; King's Coll. London ; NICPB, Tallinn) ; Ge, Shao-Feng (Tokyo U., IPMU ; UC, Berkeley)
Gluon-gluon to photon-photon scattering $gg \to \gamma\gamma$ offers to the LHC experiments a uniquely powerful probe of dimension-8 operators in the Standard Model Effective Field Theory (SMEFT) that are quadratic in both the electromagnetic and gluonic field-strength tensors, such as would appear in the Born-Infeld extension of the Standard Model (SM). We use 13-TeV ATLAS data on the production of isolated photon pairs to set lower limits on the scales of dimension-8 operators $M \gtrsim 1$~TeV, and discuss the prospective sensitivities of possible future hadron colliders..
arXiv:1802.02416; KCL-PH-TH-2018-02; CERN-TH-2018-014; IPMU-18-0022.-
2018-07-24 - 6 p.
- Published in : Phys. Rev. Lett. 121 (2018) 041801
Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF;
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Probing the scale of grand unification with gravitational waves
/ Buchmuller, Wilfried (DESY) ; Domcke, Valerie (DESY) ; Murayama, Hitoshi (DESY ; UC, Berkeley ; LBL, Berkeley ; Tokyo U., IPMU) ; Schmitz, Kai (CERN)
The spontaneous breaking of U(1)_B-L around the scale of grand unification can simultaneously account for hybrid inflation, leptogenesis, and neutralino dark matter, thus resolving three major puzzles of particle physics and cosmology in a single predictive framework. The B-L phase transition also results in a network of cosmic strings. [...]
arXiv:1912.03695; CERN-TH-2019-215; DESY-19-210; DESY 19-210; IPMU 19-0179.-
2020-09-03 - 5 p.
- Published in : 10.1016/j.physletb.2020.135764
Article from SCOAP3: PDF; Fulltext: PDF;
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