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The γ∗γ∗→ ηc (1S; 2S) transition form factor from quarkonium wave functions

Babiarz, Izabela LU ; Goncalves, Victor P. LU ; Pasechnik, Roman LU ; Schä Fer, Wolfgang and Szczurek, Antoni (2019) 2019 International Conference on the Structure and the Interactions of the Photon, PHOTON 2019, Satellite Workshop on Photon Physics and Simulation at Hadron Colliders In Frascati Physics Series 69. p.95-100
Abstract

We discuss γ ∗γ ∗→ ηc(1S) ; ηc (2S) transition form factor for both virtual photons. The general formula is given. We use difierent models for the cc̄ wave function obtained from the solution of the Schrödinger equation for diffierent cc̄ potentials: harmonic oscillator, Cornell, logarithmic, power-law, Coulomb and Buchmüller{Tye. We showed some examples of wave functions in the Light Front representation as well as in the rest frame of cc̄. We compare our results to the BaBar experimental data for ηc(1S), with one real and one virtual photon, and to the values collected by the Particle Data Group for the form factor F(0; 0), decay width τγ γ and decay constant fηc . We also consider the non-relativistic... (More)

We discuss γ ∗γ ∗→ ηc(1S) ; ηc (2S) transition form factor for both virtual photons. The general formula is given. We use difierent models for the cc̄ wave function obtained from the solution of the Schrödinger equation for diffierent cc̄ potentials: harmonic oscillator, Cornell, logarithmic, power-law, Coulomb and Buchmüller{Tye. We showed some examples of wave functions in the Light Front representation as well as in the rest frame of cc̄. We compare our results to the BaBar experimental data for ηc(1S), with one real and one virtual photon, and to the values collected by the Particle Data Group for the form factor F(0; 0), decay width τγ γ and decay constant fηc . We also consider the non-relativistic limit for F(0; 0) with the wave function evaluated at the origin R(0).

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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
PHOTON 2019 - International Conference on the Structure and the Interactions of the Photon
series title
Frascati Physics Series
editor
Corcella, Gennaro ; De Lucia, Erika ; Di Nezza, Pasquale ; Gianotti, Paola and Pancheri, Giulia
volume
69
pages
6 pages
publisher
Istituto Nazionale di Fisica Nucleare
conference name
2019 International Conference on the Structure and the Interactions of the Photon, PHOTON 2019, Satellite Workshop on Photon Physics and Simulation at Hadron Colliders
conference location
Frascati, Italy
conference dates
2019-06-03 - 2019-06-07
external identifiers
  • scopus:85086037471
ISSN
1122-5157
ISBN
9788886409704
language
English
LU publication?
yes
id
92339945-22e0-4f13-8a44-c8c15cf7382f
date added to LUP
2020-06-29 10:30:00
date last changed
2024-03-20 13:35:54
@inproceedings{92339945-22e0-4f13-8a44-c8c15cf7382f,
  abstract     = {{<p>We discuss γ ∗γ ∗→ η<sub>c</sub>(1S) ; η<sub>c</sub> (2S) transition form factor for both virtual photons. The general formula is given. We use difierent models for the cc̄ wave function obtained from the solution of the Schrödinger equation for diffierent cc̄ potentials: harmonic oscillator, Cornell, logarithmic, power-law, Coulomb and Buchmüller{Tye. We showed some examples of wave functions in the Light Front representation as well as in the rest frame of cc̄. We compare our results to the BaBar experimental data for ηc(1S), with one real and one virtual photon, and to the values collected by the Particle Data Group for the form factor F(0; 0), decay width τγ γ and decay constant f<sub>ηc</sub> . We also consider the non-relativistic limit for F(0; 0) with the wave function evaluated at the origin R(0).</p>}},
  author       = {{Babiarz, Izabela and Goncalves, Victor P. and Pasechnik, Roman and Schä Fer, Wolfgang and Szczurek, Antoni}},
  booktitle    = {{PHOTON 2019 - International Conference on the Structure and the Interactions of the Photon}},
  editor       = {{Corcella, Gennaro and De Lucia, Erika and Di Nezza, Pasquale and Gianotti, Paola and Pancheri, Giulia}},
  isbn         = {{9788886409704}},
  issn         = {{1122-5157}},
  language     = {{eng}},
  pages        = {{95--100}},
  publisher    = {{Istituto Nazionale di Fisica Nucleare}},
  series       = {{Frascati Physics Series}},
  title        = {{The γ∗γ∗→ η<sub>c</sub> (1S; 2S) transition form factor from quarkonium wave functions}},
  volume       = {{69}},
  year         = {{2019}},
}