Theory of hadron decay into baryon-antibaryon final state

Abstract

The nonperturbative mechanism of baryon-antibaryon production due to double quark pair $(q\bar{q})$($q\bar{q})$ generation inside a hadron is considered and the amplitude is calculated as matrix element of the vertex operator between initial and final hadron wave functions. The vertex operator is expressed solely in terms of first principle input: current quark masses, string tension $\sigma$ and ${\alpha }_s$. In contrast to meson-meson production via single pair generation, in baryon case a new entity appears in the vertex: the vacuum correlation length $\lambda$, which was computed before through string tension $\sigma$. As an application electroproduction of ${\Lambda }_c{\bar{\Lambda }}_c$ was calculated and an enhancement near 4.61 GeV was found in agreement with recent experimental data.

24 pages,2 figures,new results added

References in corpus (9)

• Observation of a near-threshold enhancement in the e+e- -->Lambda_c+Lambda_c- cross section using initial-state radiation
• Hadron Production via e+e- Collisions with Initial State Radiation
• The $\mathbf{S}-\mathbf{D}$ mixing and di-electron widths of higher charmonium $1^{--}$ states
• Possible psi(5S), psi(4D), psi(6S) and psi(5D) signals in Lambda(c)-antiLambda(c)
• Di-Pion Decays of Heavy Quarkonium in the Field Correlator Method
• Relativistic theory of string breaking in QCD
• Accuracy of Auxiliary Field Approach for Baryons
• Radial Regge trajectories for higher $\psi (nS)$ and $\psi (nD)$ states
• Baryons in the Field Correlator Method: Effects of the Running Strong Coupling

Cited by in corpus (12)

• The hidden-charm pentaquark and tetraquark states
• Study on the rare decays of $Y(4630)$ induced by final state interactions
• Hadron physics potential of future high-luminosity B-factories at the Upsilon(5S) and above
• Y(4626) as a molecular state from interaction $D_s^{\ast }{\bar{D}}_{s1}(2536)-D_s{\bar{D}}_{s1}(2536)$
• Role of $Y(4630)$ in the $p\bar{p}\to {\Lambda }_c{\bar{\Lambda }}_c$ reaction near threshold
• Possible ${\Lambda }_c{\bar{\Lambda }}_c$ molecular states and their productions in nulceon-antinulceon collision
• Boosting QED and QCD bound states in the path integral formalism
• A new decay mode of higher charmonium
• Possible molecular states from interactions of charmed baryons
• Charmonium decays into ${\Lambda }_c{\bar{\Lambda }}_c$ pair governed by the hadronic loop mechanism
• Explanation of Y(4630) as hadronic resonant state
• Theory of time-like baryon form factors near thresholds