Production and decay of hyperons in a transversely polarized electron-positron collider

X Cao, YT Liang, RG Ping - Physical Review D, 2024 - APS
The self-polarization of relativistic electrons or positrons moving in a magnetic field at a
storage ring occurs through the emission of spin-flip synchrotron radiation, known as the …

From optimal observables to machine learning: an effective-field-theory analysis of e+ e−→ W+ W− at future lepton colliders

S Chai, J Gu, L Li - Journal of High Energy Physics, 2024 - Springer
A bstract We apply machine-learning techniques to the effective-field-theory analysis of the
e+ e−→ W+ W− processes at future lepton colliders, and demonstrate their advantages in …

Probing the four-fermion operators via the transverse double spin asymmetry at the Electron-Ion Collider

HL Wang, XK Wen, H Xing, B Yan - Physical Review D, 2024 - APS
The chirality-flipping operators of light fermions are currently poorly constrained by
experimental analyses due to the lack of interference with standard model (SM) amplitudes …

Spin asymmetry and dipole moments in τ-pair production with ultraperipheral heavy ion collisions

D Shao, B Yan, SR Yuan, C Zhang - Science China Physics, Mechanics & …, 2024 - Springer
The anomalous magnetic (MDM) and electric (EDM) dipole moments of the τ lepton serve as
crucial indicators of new physics beyond the standard model. Leveraging azimuthal angular …

Dihadron azimuthal asymmetry and light-quark dipole moments at the Electron-Ion Collider

XK Wen, B Yan, Z Yu, CP Yuan - arXiv preprint arXiv:2408.07255, 2024 - arxiv.org
We propose a novel method to probe light-quark dipole moments by examining the
azimuthal asymmetries between a collinear pair of hadrons in semi-inclusive deep inelastic …

Sensitivity of polarizations and spin correlations of boson to anomalous neutral triple gauge couplings at lepton collider with polarized beams

A Subba, RK Singh - Physical Review D, 2024 - APS
We investigate the effects of anomalous neutral triple gauge couplings in ZZ and Z γ
production processes, followed by the leptonic decay of the Z boson, at a lepton collider with …

[HTML][HTML] Factorization of photon induced processes in ultra-peripheral heavy ion collisions

YC Hui - Nuclear Physics A, 2025 - Elsevier
In this study, we investigate photon-photon scattering in ultra-peripheral heavy ion collisions
(UPCs). We start by deriving an effective Lagrangian from first principles and then apply …

Transverse spin effects and light-quark dipole moments at lepton colliders

XK Wen, B Yan, Z Yu, CP Yuan - arXiv preprint arXiv:2411.13845, 2024 - arxiv.org
We propose to probe light-quark dipole interactions at lepton colliders using the azimuthal
asymmetry of a collinear dihadron pair $(h_1h_2) $ produced in association with another …

Lam-Tung relation breaking in boson production as a probe of SMEFT effects

X Li, B Yan, CP Yuan - arXiv preprint arXiv:2405.04069, 2024 - arxiv.org
The violation of Lam-Tung relation in the high-$ p_T^{\ell\ell} $ region of the Drell-Yan
process at the LHC presents a long-standing discrepancy with the standard model …

[PDF][PDF] Probing dipole operators and four-fermion operators at low-energy lepton colliders

Y Hu, X Guo - Chinese Physics C, 2024 - cpc.ihep.ac.cn
In this study, we explore the potentials of dipole operators and four-fermion operators at low-
energy lepton colliders such as Belle II and the Super Tau Charm Facility (STCF). We utilize …