Search for the Θ(1540)+ pentaquark using kaon secondary interactions at Belle

Using kaon secondary interactions in the material of the Belle detector, we search for both inclusive and exclusive production of the Θ(1540) +. We set an upper limit of 2.5% at the 90% C.L. on the ratio of the Θ(1540)+ to Λ(1520) inclusive production cross sections. We also search for the Θ(1540)+ as an intermediate resonance in the charge exchange reaction K+n→pKS 0. We set an upper limit of ΓΘ+<0.64 MeV at the 90% C.L. for m Θ+=1.539 MeV/c2. These results are obtained from a 397 fb-1 data sample collected with the Belle detector near the Υ(4S) resonance, at the KEKB asymmetric energy e+e- collider. © 2005 Elsevier B.V. All rights reserved.


Published in:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 632, 2-3, 173-180
Year:
2006
ISSN:
03702693
Other identifiers:
Scopus: 2-s2.0-29144443556
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 Record created 2010-11-05, last modified 2018-01-28


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