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28 March 2024
 
  » arxiv » hep-ph/0311125

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The Evidence for a Pentaquark Signal and Kinematic Reflections
A.R.Dzierba ; D.Krop ; M.Swat ; A.P.Szczepaniak ; S.Teige ;
Date 10 Nov 2003
Journal Phys.Rev. D69 (2004) 051901
Subject hep-ph hep-ex
AbstractSeveral recent experiments have reported evidence for a narrow baryon resonance with positive strangeness ($Theta^+$) at a mass of 1.54 GeV/$c^2$. Baryons with $S=+1$ cannot be conventional $qqq$ states and the reports have thus generated much theoretical speculation about the nature of possible $S=+1$ baryons, including a 5-quark, or pentaquark, interpretation. We show that narrow enhancements in the $K^+n$ effective mass spectrum can be generated as kinematic reflections resulting from the decay of mesons, such as the $f_2(1275)$, the $a_2(1320)$ and the $ ho_3(1690)$.
Source arXiv, hep-ph/0311125
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