Resonance production and transverse spectra inp¯nannihilations at 5.55 GeV/c

We present results on the production of resonances ($\rho$, $f$, $g$, $\omega$, $A_1$, and $A_2$) in $\overline{p}n$ annihilations at 5.55 GeV/c. Channel and resonance cross sections are determined and compared with $\overline{p}p$ data obtained at nearly the same incident momentum. Production features in terms of the transverse momentum ($P_T$) and the transverse kinetic energy ($E_K$) are also investigated. In particular, it is shown that the noninvariant $E_K$ distributions for exclusive annihilation channels can be parametrized by $e^{-\frac{E_K}{T}}$ functions, and the behavior of the slope parameters $T$ is discussed.