BARC/PUB/2004/0235

 
 

Evidence of Pentaquark States from K+N Scattering Data?

 
     
 
Author(s)

Kelkar, N. G.; Nowakowski, M.; Khemchandani, K. P.
(NPD)

Source

Modern Physics Letters-A, 2004. Vol. 19 (26): pp. 2001-2008

ABSTRACT

Motivated by the recent experimental evidence of the exotic B = S = +1 baryonic state Θ (1540), we examine the older existing data on K+N elastic scattering through the time delay method. We nd positive peaks in time delay around 1.545 and 1.6 GeV in the D03 and P01 partial waves of K+N scattering respectively, in agreement with experiments. We also find an indication of the J = 3/2 Θ*  spin-orbit partner to the Θ, in the P03 partial wave at 1.6 GeV. We discuss the pros and cons of these ndings in support of the interpretation of these peaks as possible exotics.

 
 
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