The physics motivation for a very forward detector for the ALICE heavy ion experiment at the CERN LHC is discussed. A phenomenological model describing the formation and decay of a Centauro fireball ...in nucleus-nucleus collisions is presented. The CASTOR detector which is aimed to measure the hadronic and photonic content of an interaction and to identify deeply penetrating objects in the very forward, baryon-rich phase space 5.6 < eta < 7.2 in an event-by-event mode is described. Results of simulations of the expected response of the calorimeter, and in particular to the passage of strangelets, are presented.
The reaction $\pi^-p \to \eta\pi^o n$ has been studied with GAMS-2000
spectrometer in the secondary 38 GeV/c $\pi^-$-beam of the IHEP U-70
accelerator. Partial wave analysis of the reaction has been ...performed in the
$\eta\pi^o$ mass range up to 1200 MeV. The $a_0(980)$-meson is seen as a sharp
peak in S-wave. The $t$-dependence of $a_0(980)$ production cross section has
been studied. Dominant production of the $a_0(980)$ at a small transfer
momentum $t$ confirms the hypothesis of Achasov and Shestakov about significant
contribution of the $\rho_2$ exchange ($I^GJ^{PC}=1^+2^{--}$) in the mechanism
of $a_0(980)$ meson production in $t$-channel of the reaction.
The reaction \(\pi^-p \to \eta\pi^o n\) has been studied with GAMS-2000 spectrometer in the secondary 38 GeV/c \(\pi^-\)-beam of the IHEP U-70 accelerator. Partial wave analysis of the reaction has ...been performed in the \(\eta\pi^o\) mass range up to 1200 MeV. The \(a_0(980)\)-meson is seen as a sharp peak in S-wave. The \(t\)-dependence of \(a_0(980)\) production cross section has been studied. Dominant production of the \(a_0(980)\) at a small transfer momentum \(t\) confirms the hypothesis of Achasov and Shestakov about significant contribution of the \(\rho_2\) exchange (\(I^GJ^{PC}=1^+2^{--}\)) in the mechanism of \(a_0(980)\) meson production in \(t\)-channel of the reaction.
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