Charmed-baryon production in antiproton-proton collisions within an effective Lagrangian model

Abstract

We study the productions of charmed baryons ${\bar{\Lambda }}_c^{-}{\Lambda }_c^{+}$, ${\bar{\Lambda }}_c^{-}{\Sigma }_c^{+}$, and ${\bar{\Sigma }}^{-}{\Sigma }_c^{+}$ in the antiproton-proton collisions within an effective Lagrangian model that has only the baryon-meson degrees of freedom and involves the physical hadron masses. The baryon production proceeds via the $t$-channel exchanges of $D^0$ and $D^{\ast 0}$ mesons in the initial collision of the antiproton with the target proton. The distortion effects in the initial and final states are accounted for by using an eikonal approximation-based procedure. We find that the reaction amplitudes of all the production channels are dominated by the $D^{\ast 0}$ meson-exchange diagrams. We discuss the relative roles of tensor and vector components of the $D^{\ast 0}$ coupling in the $D^{\ast 0}$ meson-exchange component of the total production cross sections. The magnitudes of the cross sections are predicted for each final state for the range of beam momenta of relevance to the $\bar{P}ANDA$ experiment.

16 pages, 5 figures. typos corrected, version accepted for publication in Phys. Rev. D. arXiv admin note: text overlap with arXiv:1406.7071

References in corpus (12)

• DN interaction from meson exchange
• Future Prospects for Hadron Physics at PANDA
• Dbar-N interaction from meson-exchange and quark-gluon dynamics
• Photoproduction of eta meson within a coupled-channels K-matrix approach
• 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
• 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
• Production of charmed baryons in $\bar{p}p$ collisions close to their thresholds
• Charm production in antiproton-proton annihilation
• $\bar{D}D$ meson pair production in antiproton-nucleus collisions

Cited by in corpus (2)

• Production of charmed baryon ${\Lambda }_c(2860)$ via low energy antiproton-proton interaction
• Production of single-charmed baryons in a quark model approach