Cheng-Wei Chiang
YOU?
Author Swipe
View article: Enhancing the Sensitivity for Triple Higgs Boson Searches with Deep Learning Techniques
Enhancing the Sensitivity for Triple Higgs Boson Searches with Deep Learning Techniques Open
Using two benchmark models containing extended scalar sectors beyond the Standard Model, we study deep learning techniques to enhance the sensitivity of resonant triple Higgs boson searches in the fully hadronic $6b$ channel, which suffers…
View article: Dark <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>Z</mml:mi> </mml:math> -mediated dark matter with verifiable exotic scalars
Dark -mediated dark matter with verifiable exotic scalars Open
In this work, we study a dark matter scenario where a dark Z boson possessing mass mixing with the Standard Model (SM) Z boson couples to the dark matter (DM) candidate and serves as the portal to the SM. The UV origin of the mass mixi…
View article: Improving the performance of weak supervision searches using data augmentation
Improving the performance of weak supervision searches using data augmentation Open
A bstract Weak supervision combines the advantages of training on real data with the ability to exploit signal properties. However, training a neural network using weak supervision often requires an excessive amount of signal data, which s…
View article: Leptoquark-mediated Dirac neutrino mass and its impact on $$ B\to K\nu \overline{\nu} $$ and $$ K\to \pi \nu \overline{\nu} $$ decays
Leptoquark-mediated Dirac neutrino mass and its impact on $$ B\to K\nu \overline{\nu} $$ and $$ K\to \pi \nu \overline{\nu} $$ decays Open
A bstract Right-handed neutrinos ν R play a crucial role in flavor-changing neutral-current processes with missing energy, such as "Image missing" and "Image missing", where Belle-II reports unexpectedly large branching fraction in $$ B\to…
View article: Indirect detection constraints on semi-annihilation of inert scalar multiplets
Indirect detection constraints on semi-annihilation of inert scalar multiplets Open
A bstract Certain models of inert multiplets allow for semi-annihilation processes, in which two dark matter candidates annihilate to a dark matter particle and a non-dark matter particle. The existence of these processes can alleviate cer…
View article: The nano-hertz and milli-hertz stochastic gravitational waves in the minimal clockwork axion model
The nano-hertz and milli-hertz stochastic gravitational waves in the minimal clockwork axion model Open
The clockwork framework can realize TeV-scale $U(1)_{PQ}$ symmetry breaking while generating a large axion decay constant \(f_a\). We propose a minimal clockwork axion model with three scalar fields, in which two domain walls (DWs) have no…
View article: Doubly charged Higgs boson at same-sign lepton colliders
Doubly charged Higgs boson at same-sign lepton colliders Open
We investigate the search for doubly charged Higgs bosons in the Georgi-Machacek (GM) model at same-sign lepton colliders. The dominant production mode is vector boson fusion, through which the particle is singly produced and decays into a…
View article: 67 Preparing a future ready clinical workforce with cross-cutting capability, adaptive expertise and action learning
67 Preparing a future ready clinical workforce with cross-cutting capability, adaptive expertise and action learning Open
View article: Leptoquark-mediated Dirac neutrino mass and its impact on $B \to K ν\barν$ and $K \to πν\barν$ decays
Leptoquark-mediated Dirac neutrino mass and its impact on $B \to K ν\barν$ and $K \to πν\barν$ decays Open
Right-handed neutrinos $ν_R$ play a crucial role in flavor-changing neutral-current processes with missing energy, such as $b\to s + \slashed{E} $ and $d\to s + \slashed{E} $, where Belle-II reports unexpectedly large branching fraction in…
View article: Family Unification in $SO(16)$ Grand Unification
Family Unification in $SO(16)$ Grand Unification Open
We propose a unified model for the three Standard Model (SM) gauge symmetries and $SU(3)$ family symmetry based on $SO(16)$ grand unified gauge symmetry on six-dimensional (6D) spacetime. In this model, three chiral generations of quarks a…
View article: Flavor Physics at the CEPC: a General Perspective
Flavor Physics at the CEPC: a General Perspective Open
We discuss the landscape of flavor physics at the Circular Electron-Positron Collider (CEPC), based on the nominal luminosity outlined in its Technical Design Report. The CEPC is designed to operate in multiple modes to address a variety o…
View article: Improving the performance of weak supervision searches using data augmentation
Improving the performance of weak supervision searches using data augmentation Open
Weak supervision combines the advantages of training on real data with the ability to exploit signal properties. However, training a neural network using weak supervision often requires an excessive amount of signal data, which severely li…
View article: Tetraquark nature of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>a</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>980</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:mrow></mml:math> meson in hadronic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi></mml:math> decays
Tetraquark nature of the meson in hadronic decays Open
The internal structure of the light scalar meson a0(980) is explored in the three-body D decays of D→a0(980)P→P1P2P through the intermediate state a0(980), where P denotes a pseudoscalar meson. The quasi-two-body D→a0(980)+P decays are gov…
View article: Rare <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>K</mml:mi></mml:math> decays in a scotogenic model
Rare and decays in a scotogenic model Open
A scotogenic model can radiatively generate the observed neutrino mass, provide a dark matter candidate, and lead to rare lepton flavor-violating processes. We aim to extend the model to establish a potential connection to the quark flavor…
View article: Impact of non-thermal phase-space distributions on dark matter abundance in secluded sectors
Impact of non-thermal phase-space distributions on dark matter abundance in secluded sectors Open
Many new physics models include secluded sectors that interact little with the Standard Model and whose internal interactions control the dark matter abundance. If these same interactions are responsible for maintaining kinematic equilibri…
View article: Deep learning to improve the sensitivity of Di-Higgs searches in the 4b channel
Deep learning to improve the sensitivity of Di-Higgs searches in the 4b channel Open
A bstract The study of di-Higgs events, both resonant and non-resonant, plays a crucial role in understanding the fundamental interactions of the Higgs boson. In this work we consider di-Higgs events decaying into four b -quarks and propos…
View article: Primordial Black Holes from Domain Wall Density Fluctuations: Bridging Gravitational Wave Observations Across Two Frequency Bands
Primordial Black Holes from Domain Wall Density Fluctuations: Bridging Gravitational Wave Observations Across Two Frequency Bands Open
We propose a novel mechanism for the formation of primordial black holes by demonstrating that the delayed production of isocurvature perturbations resulting from Poisson fluctuations within the domain wall network can lead to collapse and…
View article: Tetraquark nature of the $a_0(980)$ meson in hadronic $D$ decays
Tetraquark nature of the $a_0(980)$ meson in hadronic $D$ decays Open
The internal structure of the light scalar meson $a_0(980)$ is explored in the three-body $D$ decays of $D\to a_0(980)P\to P_1P_2P$ through the intermediate state $a_0(980)$, where $P$ denotes a pseudoscalar meson. The quasi-two-body $D\to…
View article: Indirect detection constraints on semi-annihilation of inert scalar multiplets
Indirect detection constraints on semi-annihilation of inert scalar multiplets Open
Certain models of inert multiplets allow for semi-annihilation processes, in which two dark matter candidates annihilate to a dark matter particle and a non-dark matter particle. The existence of these processes can alleviate certain const…
View article: Dark matter semi-annihilation for inert scalar multiplets
Dark matter semi-annihilation for inert scalar multiplets Open
A bstract Dark matter semi-annihilation is a process through which two dark matter candidates annihilate to a single dark matter particle and a non-dark matter particle. Such processes are common when the symmetry stabilizing the dark matt…
View article: Top-quark FCNC decays, LFVs, lepton g − 2, and W mass anomaly with inert charged Higgses
Top-quark FCNC decays, LFVs, lepton g − 2, and W mass anomaly with inert charged Higgses Open
The observed flavor-changing neutral-current (FCNC) processes in the standard model (SM) arise from the loop diagrams involving the weak charged currents mediated by the W -gauge boson. Nevertheless, the top-quark FCNCs and lepton flavor-v…
View article: 95 GeV Higgs boson in the Georgi-Machacek model
95 GeV Higgs boson in the Georgi-Machacek model Open
CMS and ATLAS have reported small excesses in the search for low-mass Higgs bosons in the diphoton decay channel at exactly the same mass, 95.4 GeV. These searches rely on improved analysis techniques, enhancing in particular the discrimin…
View article: Updated analysis of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>D</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>P</mml:mi><mml:mi>P</mml:mi><mml:mo>,</mml:mo><mml:mi>V</mml:mi><mml:mi>P</mml:mi></mml:mrow></mml:math>, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>V</mml:mi><mml:mi>V</mml:mi></mml:math> decays: Implications for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>K</mml:mi><mml:mi>S</mml:mi><mml:mn>0</mml:mn></mml:msubsup><mml:mo>−</mml:mo><mml:msubsup><mml:mi>K</mml:mi><mml:mi>L</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math> asymmetries and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>D</mml:mi><mml:mn>0</mml:mn></mml:msup><mml:mo>−</mml:mo><mml:msup><mml:mover accent="true"><mml:mi>D</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mn>0</mml:mn></mml:msup></mml:math> mixing
Updated analysis of , and decays: Implications for asymmetries and mixing Open
An updated analysis of the two-body D→PP,VP, and VV decays within the framework of the topological diagram approach is performed. A global fit to the Cabibbo-favored (CF) modes in the VP sector gives many solutions with similarly small loc…
View article: Flavor anomalies in leptoquark model with gauged <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1</mml:mn><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mrow><mml:msub><mml:mi>L</mml:mi><mml:mi>μ</mml:mi></mml:msub><mml:mo>−</mml:mo><mml:msub><mml:mi>L</mml:mi><mml:mi>τ</mml:mi></mml:msub></mml:mrow></mml:msub></mml:math>
Flavor anomalies in leptoquark model with gauged Open
In addition to anomalies associated with the muon g−2 and the branching ratio (BR) of B→D(*)τν¯, Belle II recently observed an unexpectedly large BR in the B+→K+νν¯ decay. To resolve the anomalous excesses in these observables, we propose …
View article: Pseudo-Nambu-Goldstone dark matter in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi><mml:mi>U</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>7</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> grand unification
Pseudo-Nambu-Goldstone dark matter in grand unification Open
We propose a grand unified theory (GUT) pseudo-Nambu-Goldstone boson (pNGB) dark matter (DM) model based on SU(7) gauge symmetry. In the GUT model, the Standard Model (SM) gauge symmetry GSM≔SU(3)C×SU(2)L×U(1)Y and the “dark” gauge symmetr…
View article: Phenomenological study of a gauged <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>L</mml:mi><mml:mi>μ</mml:mi></mml:msub><mml:mo>−</mml:mo><mml:msub><mml:mi>L</mml:mi><mml:mi>τ</mml:mi></mml:msub></mml:math> model with a scalar leptoquark
Phenomenological study of a gauged model with a scalar leptoquark Open
A Z′ gauge boson with sub-GeV mass has acquired a significant interest in phenomenology, particularly in view of the muon g−2 anomaly and coherent elastic neutrino-nucleon scattering. The latter is challenged by the nuclear recoil energy o…
View article: Rare $B$ and $K$ decays in a scotogenic model
Rare $B$ and $K$ decays in a scotogenic model Open
A scotogenic model can radiatively generate the observed neutrino mass, provide a dark matter candidate, and lead to rare lepton flavor-violating processes. We aim to extend the model to establish a potential connection to the quark flavor…
View article: Dark matter semi-annihilation for inert scalar multiplets
Dark matter semi-annihilation for inert scalar multiplets Open
Dark matter semi-annihilation is a process through which two dark matter candidates annihilate to a single dark matter particle and a non-dark matter particle. Such processes are common when the symmetry stabilizing the dark matter differs…
View article: Improving the performance of weak supervision searches using transfer and meta-learning
Improving the performance of weak supervision searches using transfer and meta-learning Open
A bstract Weak supervision searches have in principle the advantages of both being able to train on experimental data and being able to learn distinctive signal properties. However, the practical applicability of such searches is limited b…
View article: Deep Learning to Improve the Sensitivity of Di-Higgs Searches in the $4b$ Channel
Deep Learning to Improve the Sensitivity of Di-Higgs Searches in the $4b$ Channel Open
The study of di-Higgs events, both resonant and non-resonant, plays a crucial role in understanding the fundamental interactions of the Higgs boson. In this work we consider di-Higgs events decaying into four $b$-quarks and propose to impr…