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Amplitude analyses of the decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-

Abstract:

Using a data sample of 2.59 x 10^7 psi(2S) decays obtained with the CLEO-c detector, we perform amplitude analyses of the complementary decay chains chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-. We find evidence for a P-wave eta' pi scattering amplitude, which, if interpreted as a resonance, would have exotic J^PC = 1^-+ and parameters consistent with the pi_1(1600) state reported in other production mechanisms. We also make the first observation of the decay a_0(980) -> eta' pi ...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.84.112009

Authors


Collaboration, CLEO More by this author
Napolitano, J More by this author
Ecklund, KM More by this author
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Journal:
Phys. Rev. D
Volume:
84
Issue:
11
Pages:
112009
Publication date:
2011-09-27
DOI:
EISSN:
1550-2368
ISSN:
1550-7998
URN:
uuid:ce9b71dc-614e-4576-b670-f7657fa76ea2
Source identifiers:
246070
Local pid:
pubs:246070
Language:
English
Keywords:

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