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Probing Neutral Triple Gauge Couplings via $ZZ$ Production at $e^+e^-$ 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.) ; Zeng, Shi-Ping (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiao Tong U.)
Neutral triple gauge couplings (nTGCs) first arise from the dimension-8 operators of the Standard Model Effective Field Theory (SMEFT), rather than the dimension-4 SM Lagrangian and dimension-6 SMEFT operators, opening up a unique window for probing new physics at the dimension-8 level. [...]
KCL-PH-TH/2025-28 ; CERN-TH-2025-122 ; arXiv:2506.21433.
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2024-11-07 - 32.
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A compact frozen-spin trap for the search for the electric dipole moment of the muon
/ Adelmann, A. (Zurich, ETH ; PSI, Villigen) ; Bainbridge, A.R. (Daresbury ; Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Bailey, I. (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U. ; Lancaster U. (main)) ; Baldini, A. (INFN, Pisa ; Pisa U.) ; Basnet, S. (Shanghai Jiao Tong U. ; Shanghai Jiaotong U.) ; Berger, N. (U. Mainz, PRISMA) ; Bianco, L. (INFN, Pisa) ; Calzolaio, C. (PSI, Villigen) ; Caminada, L. (Zurich U. ; PSI, Villigen) ; Cavoto, G. (Rome U. ; INFN, Rome) et al.
The electric dipole moments~(EDM) of fundamental particles inherently violate parity~(P) and time-reversal~(T) symmetries. By virtue of the CPT theorem in quantum field theory, the latter also implies the violation of the combined charge-conjugation and parity~(CP) symmetry. [...]
arXiv:2501.18979.-
2025-06-06 - 34 p.
- Published in : Eur. Phys. J. C 85 (2025) 622
Fulltext: 2501.18979 - PDF; document - PDF;
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CaloChallenge 2022: A Community Challenge for Fast Calorimeter Simulation
/ Krause, Claudius (ed.) (Vienna, OAW ; Heidelberg U.) ; Faucci Giannelli, Michele (ed.) (INFN, Rome2 ; Chalmers U. Tech.) ; Kasieczka, Gregor (ed.) (Hamburg U.) ; Nachman, Benjamin (ed.) (LBNL, Berkeley) ; Salamani, Dalila (ed.) (CERN) ; Shih, David (ed.) (Rutgers U., Piscataway) ; Zaborowska, Anna (ed.) (CERN) ; Amram, Oz (Fermilab) ; Borras, Kerstin (DESY ; Aachen, Tech. Hochsch.) ; Buckley, Matthew R. (Rutgers U., Piscataway) et al.
We present the results of the "Fast Calorimeter Simulation Challenge 2022" - the CaloChallenge. [...]
HEPHY-ML-24-05 ; FERMILAB-PUB-24-0728-CMS ; TTK-24-43 ; arXiv:2410.21611.
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UV Completion of Neutral Triple Gauge Couplings
/ Ellis, John (Shanghai Jiaotong U. ; King's Coll. London ; CERN) ; He, Hong-Jian (Shanghai Jiaotong U. ; Shanghai Jiao Tong U. ; Tsinghua U., Beijing ; Peking U., CHEP) ; Xiao, Rui-Qing (Shanghai Jiaotong U. ; King's Coll. London ; Shanghai Jiao Tong U.) ; Zeng, Shi-Ping (Shanghai Jiaotong U. ; Shanghai Jiao Tong U.) ; Zheng, Jiaming (Shanghai Jiaotong U. ; Shanghai Jiao Tong U.)
Neutral triple gauge couplings (nTGCs) are manifestation of new physics beyond the Standard Model (SM), as they are absent in the SM and are first generated by dimension-8 operators in the SM Effective Field Theory (SMEFT). We study the UV completion of nTGCs in a renormalizable model with vector-like heavy fermions. [...]
arXiv:2408.12508; KCL-PH-TH/2024-45; CERN-TH-2024-143.-
2025-01-01 - 18 p.
- Published in : Phys. Rev. D 111 (2025) 015007
Fulltext: 2408.12508 - PDF; Publication - PDF;
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Probing Neutral Triple Gauge Couplings via $\boldsymbol{Z\gamma\,(\ell^+\ell^-\gamma)}$ Production at $\boldsymbol{e^+e^-}$ Colliders
/ Liu, Danning (Shanghai Jiao Tong U. ; Tsung-Dao Lee Inst., Shanghai ; KLPAC, Shanghai ; SKLPPC, Shanghai) ; Xiao, Rui-Qing (Shanghai Jiao Tong U. ; King's Coll. London ; KLPAC, Shanghai ; SKLPPC, Shanghai) ; Li, Shu (Shanghai Jiao Tong U. ; Peking U., CHEP ; Tsung-Dao Lee Inst., Shanghai ; KLPAC, Shanghai ; SKLPPC, Shanghai) ; Ellis, John (Shanghai Jiao Tong U. ; King's Coll. London ; CERN ; Tsung-Dao Lee Inst., Shanghai) ; He, Hong-Jian (Shanghai Jiao Tong U. ; Peking U., CHEP ; Tsung-Dao Lee Inst., Shanghai ; KLPAC, Shanghai ; SKLPPC, Shanghai) ; Yuan, Rui (Shanghai Jiao Tong U. ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai)
Neutral triple gauge couplings (nTGCs) are absent in the Standard Model (SM) and at the dimension-6 level in the Standard Model Effective Field Theory (SMEFT), arising first from dimension-8 operators. As such, they provide a unique window for probing new physics beyond the SM. [...]
arXiv:2404.15937; KCL-PH-TH/2024-18; CERN-TH-2024-046.-
2025 - 14 p.
- Published in : Front. Phys. (Beijing) 20 (2025) 15201
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Electroweak Loop Contributions to the Direct Detection of Wino Dark Matter
/ Ellis, John (King's Coll. London ; CERN) ; Nagata, Natsumi (Tokyo U.) ; Olive, Keith A. (Minnesota U.) ; Zheng, Jiaming (Shanghai Jiaotong U., INPAC)
Electroweak loop corrections to the matrix elements for the spin-independent scattering of cold dark matter particles on nuclei are generally small, typically below the uncertainty in the local density of cold dark matter. However, as shown in this paper, there are instances in which the electroweak loop corrections are relatively large, and change significantly the spin-independent dark matter scattering rate. [...]
arXiv:2305.13837; KCL-PH-TH/2023-27; CERN-PH-TH-2023-083; FTPI-MINN-23/08; UMN-TH-4214/23.-
2024-01-04 - 27 p.
- Published in : Eur. Phys. J. C 84 (2024) 4
Fulltext: 2305.13837 - PDF; document - PDF;
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