The long-standing question of whether there are 5-quark baryons has been reinvig
orated in the past year by multiple reports of the existence of a baryon
decaying to a KN final state with positive strangeness.  This state, the 
$\Theta$(1540), is manifestly exotic and had been predicted in 1997 as the
lightest member of an anti-decuplet of states on the 
basis of a chiral soliton model by Diakonov, Petrov, and Polyakov ~\cite{dpp}.  
There should be 
a charmed analog of this decuplet.  Charmed pentaquarks had been predicted much
earlier by other authors based on different models.  The H1 experiment recently
reported the observation of a narrow baryon at 3099 \mvc decaying
to  \mbox{$\rm{D}^{*}p \ $} + c.c.~\cite{h1}  This state is a candidate for the 
charmed pentaquark
$\Theta_c$ or perhaps an excited state called $\Theta_c^+$.  This note
describes the search for this state in CDF data. 


Posted to /cdf/pub/thesis/cdf6878_search_for_thetac.ps
    http://www-cdf.fnal.gov/thesis/cdf6878_search_for_thetac.ps
(This is revision # 3.)

Posted by litvinse@cdfsga