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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 | Abstract: | Several 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 | Services: | Forum | Review | PDF | Favorites |
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