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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). [...]
KCL-PH-TH/2024-45 ; CERN-TH-2024-143 ; arXiv:2408.12508.
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26.
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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.) ; Xiao, Rui-Qing (Shanghai Jiao Tong U. ; King's Coll. London) ; Li, Shu (Shanghai Jiao Tong U. ; Peking U., CHEP) ; Ellis, John (Shanghai Jiao Tong U. ; King's Coll. London ; CERN) ; He, Hong-Jian (Shanghai Jiao Tong U. ; Peking U., CHEP) ; Yuan, Rui (Shanghai Jiao Tong U.)
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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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;
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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
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CEPC Conceptual Design Report: Volume 2 - Physics & Detector
/ CEPC Study Group Collaboration
The Circular Electron Positron Collider (CEPC) is a large international scientific facility proposed by the Chinese particle physics community to explore the Higgs boson and provide critical tests of the underlying fundamental physics principles of the Standard Model that might reveal new physics. [...]
arXiv:1811.10545 ; IHEP-CEPC-DR-2018-02 ; IHEP-EP-2018-01 ; IHEP-TH-2018-01.
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2018 - 424.
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Probing the Scale of New Physics in the $ZZ\gamma$ Coupling at $e^+e^-$ Colliders
/ Ellis, John (King's Coll. London ; CERN ; NICPB, Tallinn ; Tsung-Dao Lee Inst., Shanghai) ; Ge, Shao-Feng (Tsung-Dao Lee Inst., Shanghai ; Tokyo U., IPMU ; UC, Berkeley ; Shanghai Jiaotong U.) ; He, Hong-Jian (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiaotong U. ; Tsinghua U., Beijing ; Peking U., CHEP) ; Xiao, Rui-Qing (Tsung-Dao Lee Inst., Shanghai ; Shanghai Jiaotong U.)
The $ZZ\gamma$ triple neutral gauge couplings are absent in the Standard Model (SM) at the tree level. They receive no contributions from dimension-6 effective operators, but can arise from effective operators of dimension-8. [...]
arXiv:1902.06631; KCL-PH-TH/2019-11; CERN-TH/2019-008; CERN-TH-2019-008; IPMU19-0021.-
2020-06-09 - 32 p.
- Published in : Chin. Phys. C 44 (2020) 063106
Article from SCOAP3: PDF; Fulltext: PDF;
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Higgs Inflation, Reheating and Gravitino Production in No-Scale Supersymmetric GUTs
/ Ellis, John (King's Coll. London ; CERN) ; He, Hong-Jian (Tsinghua U., Beijing, CHEP ; Peking U., CHEP) ; Xianyu, Zhong-Zhi (Harvard U., Dept. Math. ; Harvard U., Phys. Dept.)
We extend our previous study of supersymmetric Higgs inflation in the context of no-scale supergravity and grand unification, to include models based on the flipped SU(5) and the Pati-Salam group. Like the previous SU(5) GUT model, these yield a class of inflation models whose inflation predictions interpolate between those of the quadratic chaotic inflation and Starobinsky-like inflation, while also avoiding tension with proton decay limits. [...]
arXiv:1606.02202; KCL-PH-TH-2016-33; CERN-TH-2016-134; KCL-PH-TH-2016-33; CERN-TH-2016-134.-
2016-08-30 - 21 p.
- Published in : JCAP 08 (2016) 068
Article from SCOAP3: PDF; Fulltext: 10.1088_1475-7516_2016_08_068 - PDF; arXiv:1606.02202 - PDF; IOP Open Access article: PDF; External link: Preprint
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New Higgs Inflation in a No-Scale Supersymmetric SU(5) GUT
/ Ellis, John (CERN ; King's Coll. London) ; He, Hong-Jian (Peking U., CHEP ; Tsinghua U., Beijing ; Tsinghua U., Beijing, CHEP) ; Xianyu, Zhong-Zhi (Peking U., CHEP ; Tsinghua U., Beijing ; Tsinghua U., Beijing, CHEP)
Higgs inflation is attractive because it identifies the inflaton with the electroweak Higgs boson. In this work, we construct a new class of supersymmetric Higgs inflationary models in the no-scale supergravity with an SU(5) GUT group. [...]
arXiv:1411.5537; KCL-PH-TH-2014-48; LCTS-2014-49; CERN-PH-TH-2014-230; KCL-PH-TH-2014-48; LCTS-2014-49; CERN-PH-TH-2014-230.-
2015-01-21 - 6 p.
- Published in : Phys. Rev. D 91 (2015) 021302
APS Open Access article: PDF; Fulltext: PDF; External link: Preprint
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Discovering Higgsless Electroweak Symmetry Breaking at LHC-8
/ Du, Chun (Tsinghua U., Beijing) ; He, Hong-Jian (Tsinghua U., Beijing ; CERN) ; Kuang, Yu-Ping (Tsinghua U., Beijing) ; Zhang, Bin (Tsinghua U., Beijing) ; Christensen, Neil D (Pittsburgh U.) ; Chivukula, R Sekhar (Michigan State U.) ; Simmons, Elizabeth H (Michigan State U.)
We study the potential of the 8TeV LHC (LHC-8) to discover, during its 2012 run, a large class of Higgsless models whose low energy behavior is well represented by an SU(2)^2 x U(1) gauge structure. We analyze this class of models for two representative parameter choices and find that with a combined integrated luminosity of 40/fb at the LHC-8, the first new Kaluza-Klein mode of the W gauge boson can be discovered up to a mass of about 370-400GeV, when produced in association with a Z boson..
arXiv:1206.6022; CERN-PH-TH-2012-177; MSUHEP-120618; PITT-PACC-1206; TUHEP-TH-12177.-
2012
- Published in : Phys. Rev. D 86 (2012) 095011
APS Published version, local copy: PDF; External link: Preprint
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