$\bar{p}p$ annihilation into $\bar{D}D$ meson pair within an effective Lagrangian model

Abstract

We study the charmed meson pair (${\bar{D}}^0{D}^0$ and $D^{-}{D}^{+}$) production in $\bar{p}p$ annihilation within an effective Lagrangian model that has only the baryon-meson degrees of freedom and involves the physical hadron masses. The reaction amplitudes include terms corresponding to the t-channel ${\Lambda }_c^{+}$, ${\Sigma }_c^{+}$ and ${\Sigma }_c^{++}$ baryon exchanges and the s-channel excitation, propagation and decay of the $\Psi$(3770) resonance into the charmed mesons. The initial- and final-state distortion effects have been accounted for by using a simple eikonal approximation-based procedure in the same way as was done in our previous study of the $\bar{p}p\to {\bar{\Lambda }}_c^{-}{\Lambda }_c^{+}$ reaction within a similar model. The ${\bar{D}}^0{D}^0$ production reaction is dominated by the ${\Lambda }_c^{+}$ baryon exchange process, and the corresponding total cross sections are predicted to be in the range of 0.18 - 0.7 $\mu$b for antiproton beam momenta varying between threshold and 20 $GeV/c$. The $\Psi$(3770) resonance contributions have a large influence on the differential cross sections of the $D^{-}{D}^{+}$ production reaction.

23 pages, 10 figures, Journal Print version

References in corpus (15)

• Measurement of the near-threshold $e^{+}{e}^{-}\to D\bar{D}$ cross section using initial-state radiation
• DN interaction from meson exchange
• Measurements of the braching fractions for psi(3770)--> D0D0-bar,D+D-,DD-bar$ and the resonance parameters of psi(3770) and psi(2S)
• Future Prospects for Hadron Physics at PANDA
• Phenomenology of nonperturbative charm in the nucleon
• Dbar-N interaction from meson-exchange and quark-gluon dynamics
• Charmed meson rescattering in the reaction pbar d to D Dbar N
• Exclusive charm production in pbar p collisions at s^1/2 <15 GeV
• Production of charmed pseudoscalar mesons in antiproton-proton annihilation
• Study of $e^{+}{e}^{-}\to p\bar{p}$ in the vicinity of $\psi (3770)$
• Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair
• Reaction $\bar{p}p\to {\bar{\Lambda }}_c^{-}{\Lambda }_c^{+}$ within an effective Lagrangian model
• Regge description of two pseudoscalar meson production in antiproton-proton annihilation
• Charm production in antiproton-proton annihilation
• The $\psi$(3770) resonance and its production in $\bar{p}p\to D\bar{D}$

Cited by in corpus (8)

• Production of ${\Lambda }_c^{+}$ hypernuclei in antiproton - nucleus collisions
• Role of $Y(4630)$ in the $p\bar{p}\to {\Lambda }_c{\bar{\Lambda }}_c$ reaction near threshold
• $D^{+}{D}^{-}$ hadronic atom and its production in $pp$ and $p\bar{p}$ collisions
• $\bar{D}D$ meson pair production in antiproton-nucleus collisions
• Distillation of scalar exchange by coherent hypernucleus production in antiproton-nucleus collisions
• Charmed-baryon production in antiproton-proton collisions within an effective Lagrangian model
• Novel correlated $D^0\overline{D}{}^0$ systems for $c/b$ physics and tests of $T/CPT$
• Charm production in interactions of antiproton with proton and nuclei at $\bar{P}ANDA$ energies