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Sep 5 – 9, 2022
online
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Designing heavy quarkonia light-front wavefunctions on a small-basis

Sep 8, 2022, 4:40 PM
20m
online

online

FSU, Tallahassee, FL, USA
oral presentation Heavy Flavors and Quarkonia

Speaker

Guangyao Chen (Jacksonville University)

Description

We present the construction of a simple-functional form light-front wavefunctions (LFWFs) of charmonium and bottomonium states on a small-sized basis function representation. In this work, we modeled the LFWFs for four charmonium states and three bottomonium states, $\eta_c$, $J/\psi$, $\psi'$, and $\psi(3770)$, $\eta_b$, $\Upsilon$, $\Upsilon(2s)$, as superpositions of orthonormal basis functions.The basis functions are eigenfunctions of an effective Hamiltonian, which has a longitudinal confining potential in addition to the transverse confining potential from light-front holographic QCD. We employ the experimental measurements of heavy quarkonium decay widths as well as input from NRQCD to determine the basis function parameters and superposition coefficients.
We study the features of those heavy quarkonium states using the obtained wavefunctions, including charge radii and parton distribution functions. Additionally, we use the vector meson LFWF to calculate the meson production in diffractive deep inelastic scattering and ultra-peripheral heavy-ion collisions at LHC, and the $\eta_c$, $\eta_b$ LFWF to calculate its diphoton transition form factor. Both results show agreement with experiments.

speaker affiliation Jacksonville University

Primary author

Guangyao Chen (Jacksonville University)

Presentation materials