Explanipedia

Testing CP-violation in a heavy Higgs sector at CLIC Open

Kingman Cheung, Ying-nan Mao, Stefano Moretti, R. Zhang · 2025

Search for the γZ decay mode of heavy photophobic axion-like particles at the LHC Open

Z. M. Ding, Ying-nan Mao, Kechen Wang · 2025

A bstract We assume the coupling of Axion-like particle (ALP) to diphoton g aγγ ~ 0 and accomplish detailed analyses for the γZ decay mode of such heavy photophobic ALPs at the high luminosity-Large Hadron Collider (HL-LHC). ALPs are produ…

New Physics Search at the CEPC: a General Perspective Open

Stefan Antusch, Peter Athron, Daniele Barducci, Long Chen, Mingshui Chen , et al. · 2025

The Circular Electron-Positron Collider (CEPC), a proposed next-generation Higgs factory, provides new opportunities to explore physics beyond the Standard Model (SM). With its clean electron-positron collision environment and the ability …

Sensitivities of new resonance couplings to <i>W</i>-bosons at the LHC* Open

Ying-nan Mao, Kechen Wang, Yongqian Xiong · 2025

We propose a search strategy at the HL-LHC for a new neutral particle X that couples to W -bosons, using the process with a tri- W -boson final state. Focusing on events with two same-sign leptonic W -boson decays into muons and a hadronic…

The Standard Model quark/lepton masses and the Cabibbo-Kobayashi-Maskawa mixing in an SU(8) theory Open

Ning Chen, Ying-nan Mao, Zhaolong Teng · 2024

A bstract The observed Standard Model (SM) quark/lepton mass hierarchies and the Cabibbo-Kobayashi-Maskawa (CKM) mixing pattern are described in an SU(8) theory through its realistic symmetry breaking pattern with three intermediate stages…

Sensitivities to New Resonance Couplings to $W$-Bosons at the LHC Open

Ying-nan Mao, Kechen Wang, Yongqian Xiong · 2024

We propose a search strategy at the HL-LHC for a new neutral particle $X$ that couples to $W$-bosons, using the process $p p \rightarrow W^{\pm} X (\rightarrow W^{+} W^{-})$ with a tri-$W$-boson final state. Focusing on events with two sam…

Search for the $γZ$ decay mode of heavy photophobic axion-like particles at the LHC Open

Zhuoli Ding, Ying-nan Mao, Kechen Wang · 2024

We assume the coupling of Axion-like particle (ALP) to diphoton $g_{aγγ} \sim 0$ and accomplish detailed analyses for the $γZ$ decay mode of such heavy photophobic ALPs at the high luminosity-Large Hadron Collider (HL-LHC). ALPs are produc…

The gauge coupling evolutions of an SU(8) theory with the maximally symmetry breaking pattern Open

Ning Chen, Z. Hou, Ying-nan Mao, Zhaolong Teng · 2024

A bstract We study the renormalizable group equations (RGEs) of the extended strong and weak gauge couplings in an SU(8) theory, where three-generational SM fermions are non-trivially embedded. This framework was previously found to genera…

The gauge coupling evolutions of an ${\rm SU}(8)$ theory with the maximally symmetry breaking pattern Open

Ning Chen, Z. Hou, Ying-nan Mao, Zhaolong Teng · 2024

We study the renormalizable group equations (RGEs) of the extended strong and weak gauge couplings in an ${\rm SU}(8)$ theory, where three-generational SM fermions are non-trivially embedded. This framework was previously found to generate…

LAYCAST: LAYered CAvern Surface Tracker at future electron-positron colliders Open

Ye Lu, Ying-nan Mao, Kechen Wang, Zeren Simon Wang · 2024

We propose a detector concept, LAYered CAvern Surface Tracker (LAYCAST), to be installed on the ceiling and the wall of the cavern hosting the main experiment of future electron-positron colliders such as CEPC and FCC-ee. With detailed and…

The global B − L symmetry in the flavor-unified SU(N) theories Open

Ning Chen, Ying-nan Mao, Zhaolong Teng · 2024

A bstract We study the origin of the global B − L symmetry in a class of flavor-unified theories with gauge groups of SU( N ≥ 6). In particular, we focus on the SU(8) theory which can minimally embed three-generational SM fermions non-triv…

The Standard Model quark/lepton masses and the Cabibbo-Kobayashi-Maskawa mixing in an ${\rm SU}(8)$ theory Open

Ning Chen, Ying-nan Mao, Zhaolong Teng · 2024

The observed Standard Model (SM) quark/lepton mass hierarchies and the Cabibbo-Kobayashi-Maskawa (CKM) mixing pattern are described in an ${\rm SU}(8)$ theory through its realistic symmetry breaking pattern with three intermediate stages, …

Can we discover lepton number violation with the LHC far detectors? Open

Ying-nan Mao, Kechen Wang, Zeren Simon Wang · 2023

Two classes of far detectors have been proposed or are under operation at the LHC. The first class is a series of neutrino detectors that are sensitive to light active neutrinos via either charged-current or neutral-current interactions; e…

Search for heavy Majorana neutrinos in the τ final state at proton-electron colliders Open

Haiyong Gu, Ying-nan Mao, H. Sun, Kechen Wang · 2023

A bstract We utilize the lepton number violation signal process p e − → τ + jjj to search for heavy Majorana neutrinos at future proton-electron colliders. The LHeC (FCC-eh) is considered to run with an electron beam energy of 60 GeV, a pr…

The global $B-L$ symmetry in the flavor-unified ${\rm SU}(N)$ theories Open

Ning Chen, Ying-nan Mao, Zhaolong Teng · 2023

We study the origin of the global $B-L$ symmetry in a class of flavor-unified theories with gauge groups of ${\rm SU}(N\geq 6)$. In particular, we focus on the ${\rm SU}(8)$ theory which can minimally embed three-generational SM fermions n…

Probing the mixing parameter for heavy neutrinos Open

Lingxiao Bai, Ying-nan Mao, Kechen Wang · 2023

Because of the difficulty in detecting final state taus, the mixing parameter $|{V}_{\ensuremath{\tau}N}{|}^{2}$ for heavy neutrino $N$ is not well studied at current experiments, compared with other mixing parameters $|{V}_{eN}{|}^{2}$ an…

Can we discover lepton number violation with LHC far detectors? Open

Ying-nan Mao, Kechen Wang, Zeren Simon Wang · 2023

Two classes of far detectors have been proposed or are under operation at the LHC. The first class is a series of neutrino detectors that are sensitive to light active neutrinos via either charged-current or neutral-current interactions; e…

A two-generational SU(7) model with extended weak sector: mass hierarchies, mixings, and the flavor non-universality Open

Ning Chen, Ying-nan Mao, Zhaolong Teng, Bin Wang, Xiangjun Zhao · 2023

A bstract We study a possible gauge symmetry breaking pattern in an SU(7) grand unified theory, which describes the mass origins of all electrically charged SM fermions of the second and the third generations. Two intermediate gauge symmet…

Testing CP-violation in a Heavy Higgs Sector at CLIC Open

Kingman Cheung, Ying-nan Mao, Stefano Moretti, R. Zhang · 2023

We propose to probe CP-violation in the heavy (pseudo)scalar sector of an extended Higgs model, in which we make simultaneous use of the $HVV$ ($V=W^\pm, Z$) and $Ht\bar{t}$ interactions of a heavy Higgs state $H$. The CP-even component of…

Bottom quark and tau lepton masses in a toy $$\textrm{SU}(6)$$ model Open

Ning Chen, Ying-nan Mao, Zhaolong Teng · 2023

We study a toy $$\textrm{SU}(6)$$ model with the symmetry breaking pattern of the extended 331 symmetry of $$\textrm{SU}(3)_c \otimes \textrm{SU}(3)_W \otimes \textrm{U}(1)_X$$ . A “fermion-Higgs mismatching”…

Probe the Mixing Parameter $|V_{τN}|^2$ for Heavy Neutrinos Open

Lingxiao Bai, Ying-nan Mao, Kechen Wang · 2022

Because of the difficulty in detecting final state taus, the mixing parameter $|V_{τN}|^2$ for heavy neutrino $N$ is not well studied at current experiments, compared with other mixing parameters $|V_{e N}|^2$ and $|V_{μN}|^2$. In this pap…

Search for heavy Majorana neutrinos in the $τ$ final state at proton-electron colliders Open

Haiyong Gu, Ying-nan Mao, H. Sun, Kechen Wang · 2022

We utilize the lepton number violation signal process $p\, e^- \to τ^+ jjj$ to search for heavy Majorana neutrinos at future proton-electron colliders. The LHeC (FCC-eh) is considered to run with an electron beam energy of 60 GeV, a proton…

Bottom quark and tau lepton masses in a toy ${\rm SU}(6)$ Open

Ning Chen, Ying-nan Mao, Zhaolong Teng · 2021

We study a toy ${\rm SU}(6)$ model with the symmetry breaking pattern of the extended $331$ symmetry of ${\rm SU}(3)_c \otimes {\rm SU}(3)_W \otimes {\rm U}(1)_X$. A "fermion-Higgs mismatching" symmetry breaking pattern is proposed for mor…

Revisit to the b → cτν transition: In and beyond the SM Open

Kingman Cheung, Zhuo-Ran Huang, Huadong Li, Cai-Dian Lü, Ying-nan Mao , et al. · 2021

Two-Higgs-doublet model with soft violation confronting electric dipole moments and colliders Open

Kingman Cheung, Adil Jueid, Ying-nan Mao, Stefano Moretti · 2020

We analyze CP-violating effects in both Electric Dipole Moment (EDM)\nmeasurements and future analyses at the Large Hadron Collider (LHC) assuming a\nTwo-Higgs-Doublet Model (2HDM) with "soft" CP-violation. Our analysis of EDMs\nand curren…

Spontaneous CP-violation in the Simplest Little Higgs Model Open

Ying-nan Mao · 2019

We proposed how spontaneous CP-violation can be generated in the simplest\nlittle Higgs model in this talk. Comparing with the original paper, both\nformalism and phenomenology are updated. The model is still alive facing the\ncollider and…

Phenomenology of a little Higgs pseudoaxion Open

Kingman Cheung, Shi-Ping He, Ying-nan Mao, Po-Yan Tseng, Chen Zhang · 2018

In models where the Higgs is realized as a pseudo-Nambu-Goldstone boson (pNGB) of some global symmetry breaking, there are often remaining pNGBs of some $U(1)$ groups (called `pseudo-axions'), which could lead to smoking gun signatures of …

Simplest little Higgs model revisited: Hidden mass relation, unitarity, and naturalness Open

Kingman Cheung, Shi-Ping He, Ying-nan Mao, Chen Zhang, Yang Zhou · 2018

We analyze the scalar potential of the Simplest Little Higgs (SLH) model in\nan approach consistent with the spirit of continuum effective field theory\n(CEFT). By requiring correct electroweak symmetry breaking (EWSB) with the\n$125\\,\\t…

$ZHη$-vertex: EFT Analysis and the Behavior in the SLH Model Open

Shi-Ping He, Ying-nan Mao, Chen Zhang, Shou-hua Zhu · 2018

We re-analyze the $ZHη$-vertex with the form $Z_μ(η\partial^μH-H\partial^μη)$, where $H$ is the 125 GeV Higgs boson and $η$ is an exotic pseudo-axion, based on the effective field theory (EFT) analysis and choose the simplest little Higgs …

$ZH\eta$-vertex: EFT Analysis and the Behavior in the SLH Model Open

Shi-Ping He, Ying-nan Mao, Chen Zhang, Shou-hua Zhu · 2018

We re-analyze the $ZH\\eta$-vertex with the form\n$Z_{\\mu}(\\eta\\partial^{\\mu}H-H\\partial^{\\mu}\\eta)$, where $H$ is the 125 GeV\nHiggs boson and $\\eta$ is an exotic pseudo-axion, based on the effective field\ntheory (EFT) analysis a…

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