2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C 11, 271-278
DOI 10.1007/s100529900178

Production of ${\Xi^*}$ resonances
in ${\Sigma^-}$ induced reactions at 345GeV/c

The WA89 Collaboration

M.I. Adamovich 8 - et al.

8 Moscow Lebedev Physics Inst., 117924, Moscow, Russia

Received: 3 May 1999 / Published online: 28 September 1999

We report on a measurement of the differential and total cross sections of inclusive production of ${\Xi^*}$resonances in ${\Sigma^-}$ - nucleus collisions at 345 ${GeV/{\mit c}}$ The cross section for inclusive ${\Xi^0_{1530}}$ production is about a factor of 5 below that of ${\Xi^-_{1320}}$ hyperons. The products of cross section and branching ratio for the observed channels ${\Xi^0_{1690}}$ $\to$ ${\Xi^-}$${\pi^+}$ ${\Xi^-_{1820}}$ $\to$ ${\Xi^0_{1530}}$${\pi^-}$ and ${\Xi^-_{1950}}$ $\to$ ${\Xi^0_{1530}}$ ${\pi^-}$ are lower by yet another order of magnitude. The ${\Xi^-_{1820}}$ and ${\Xi^-_{1950}}$ resonances show significantly harder xF and pt distributions than ${\Xi^-}$ and ${\Xi^0_{1530}}$ hyperons. A comparison of the xF-distribution to PYTHIA and QGSM predictions provides only a partial agreement.

Copyright Springer-Verlag