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CERN Document Server 3 записей найдено  Поиск длился 0.84 секунд. 
1.
Probing neutral triple gauge couplings with <math display="inline"><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mo>*</mo></mrow></msup><mi>γ</mi></mrow></math> (<math display="inline"><mrow><mi>ν</mi><mover accent="true"><mrow><mi>ν</mi></mrow><mrow><mo stretchy="false">¯</mo></mrow></mover><mi>γ</mi></mrow></math>) production at hadron colliders / Ellis, John (King's Coll. London ; CERN ; Shanghai Jiao Tong U.) ; He, Hong-Jian (Shanghai Jiaotong U. ; Tsinghua U., Beijing ; Peking U.) ; Xiao, Rui-Qing (King's Coll. London ; Shanghai Jiao Tong U.)
We study probes of neutral triple gauge couplings (nTGCs) via $Z^*\gamma$ production followed by off-shell decays $Z^*\to\nu\bar{\nu}$ at the LHC and future $pp$ colliders, including both CP-conserving (CPC) and CP-violating (CPV) couplings. We present the dimension-8 SMEFT operators contributing to nTGCs and derive the correct form factor formulation for the off-shell vertices $Z^*\gamma V^*$ ($V=Z,\gamma$) by matching them with the dimension-8 SMEFT operators. [...]
arXiv:2308.16887; KCL-PH-TH/2023-39; CERN-TH-2023-129.- 2023-12-01 - 7 p. - Published in : Phys. Rev. D 108 (2023) L111704 Fulltext: 2308.16887 - PDF; Publication - PDF;
2.
Probing Neutral Triple Gauge Couplings at the LHC and Future Hadron Colliders / Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai ; Tsinghua U., Beijing ; Tsinghua U., Beijing, CHEP) ; Xiao, Rui-Qing (King's Coll. London ; Tsung-Dao Lee Inst., Shanghai ; SKLPPC, Shanghai)
We study probes of neutral triple gauge couplings (nTGCs) at the LHC and the proposed 100TeV $pp$ colliders, and compare their sensitivity reaches with those of the proposed $e^+ e^-$ colliders. The nTGCs provide a unique window to the new physics beyond the Standard Model (SM) because they can arise from SM effective field theory (SMEFT) operators that respect the full electroweak gauge group $SU(2)_L\otimes U(1)_Y$ of the SM only at the level of dimension-8 or higher. [...]
arXiv:2206.11676; KCL-PH-TH/2022-35; CERN-TH-2022-089.- 2023-02-01 - 57 p. - Published in : Phys. Rev. D 107 (2023) 035005 Fulltext: 2206.11676 - PDF; Publication - PDF;
3.
Probing New Physics in Dimension-8 Neutral Gauge Couplings at $e^+e^-$ Colliders / Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiao Tong U. ; Tsinghua U., Beijing ; Peking U., CHEP) ; Xiao, Rui-Qing (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiaotong U.)
Neutral triple gauge couplings (nTGCs) are absent in the standard model effective theory up to dimension-6 operators, but could arise from dimension-8 effective operators. In this work, we study the pure gauge operators of dimension-8 that contribute to nTGCs and are independent of the dimension-8 operator involving the Higgs doublet. [...]
arXiv:2008.04298; KCL-PH-TH/2020-28; CERN-TH-2020-076.- 2020-10-30 - 25 p. - Published in : Sci. China Phys. Mech. Astron. 64 (2021) 221062 Fulltext: PDF;

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