The cross section of the process $e^{+}{e}^{-}\to p\bar{p}$ in the vicinity of charmonium $\psi (3770)$ including three-gluon and $D$-meson loop contributions

Abstract

The total cross section of the process $e^{+}{e}^{-}\to p\bar{p}$ is calculated within the energy range close to the mass of $\psi (3770)$ charmonium state. It was shown that the main contribution to this cross section comes from three gluon mechanism which is also responsible of the large phase with respect to the Born amplitude. This phase provides the characteristic dip behaviour of the cross section in contrast to the usual Breit-Wigner peak shape. OZI-allowed mechanism with D-mesons in the intermediate state was also estimated and gives relatively small contribution to the cross section and to the phase.

arXiv comment20 pages, 10 figures

References in corpus (16)

• Study of e+e- --> p anti-p via initial-state radiation at BABAR
• The electromagnetic form factors of the proton in the timelike region
• Measurement of the e+e- --> p anti-p cross section in the energy range from 3.0 to 6.5 GeV
• Periodic interference structures in the time-like proton form factor
• A measurement of the CP-conserving component of the decay KS -> pi+ pi- pi0
• Measurement of the cross section for e^+e^- -> ppbar at center-of-mass energies from 2.0 to 3.07 GeV
• $g_{ND{\Lambda }_c}$ from QCD Sum Rules
• Study of D0 --> pi- e+ nu(e), D+ --> pi0 e+ nu(e), D0 --> K- e+ nu(e), and D+ --> anti-K0 e+ nu(e) in Tagged Decays of the psi(3770) Resonance
• New fit of time-like proton electromagnetic form factors from $e^{+}{e}^{-}$ colliders
• Measurement of ψ(3770) parameters
• No Sommerfeld resummation factor in e+e- -> ppbar ?
• Study of $e^{+}{e}^{-}\to p\bar{p}$ in the vicinity of $\psi (3770)$
• Finite size vertex corrections to the three-gluon decay widths of $J/\psi$ and ${\rm Y}$ and a redetermination of ${\alpha }_s(\mu )$ at $\mu =m_c$ and $m_b$
• Line shape of ψ(3770) in e^+e^-\to D\bar D
• About the creation of proton-anti-proton pair at electron-positron collider in the energy range of the mass $\Psi (3770)$
• On the measurement of ${\chi }_2{(}^3{P}_2)$ quarkonium state in the processes $e^{+}+e^{-}\to \bar{p}+p$ and $\bar{p}+p\to e^{+}+e^{-}$

Cited by in corpus (3)

• Electromagnetic form factors of $\Lambda$ hyperon in the vector meson dominance model and a possible explanation of the near-threshold enhancement of the $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ reaction
• Electromagnetic form factors of neutron and neutral stange hyperons in the oscillating view of point
• The cross section of the process $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }$ in the vicinity of charmonium $\psi (3770)$ including three-gluon and $D$-meson loop contributions