Published October 1, 1994 | Version v1
Journal article

Search for hidden charm states decaying into J/ψ or ψ' plus pions

Creators

  • 1. University of Virginia, Charlottesville, Virginia 22901 (United States)
  • 2. Shandong University, Jinan (China)
  • 3. Prairie View A ampersand M University, Prairie View, Texas 77445 (United States)
  • 4. Northwestern University, Evanston, Illinois 60208 (United States)
  • 5. Nanjing University, Nanjing (China)
  • 6. McGill University, Montreal, PQ, Quebec, H3A2T8 (Canada)
  • 7. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
  • 8. Duke University, Durham, North Carolina 27706 (United States)
  • 9. University of Athens, Athens (Greece)

Description

A search has been made in 300 GeV/c π±- and proton-Li interactions for production of states that decay into J/ψ or ψ' plus one or two pions. A 2.5σ enhancement in the J/ψ π0 spectrum, possibly the recently reported 1P1 state of charmonium, is observed at a mass of 3.527 GeV/c2. In the J/ψ plus two pion mass spectrum, we report, together with the expected ψ'→J/ψ π+π-, the tentative observation of a structure at a mass of 3.836 GeV/c2. No enhancements are seen in the J/ψ π±π±, J/ψ π±π0, J/ψ π±, or ψ' π± mass spectra

Additional details

Publishing Information

Journal Title
Physical Review. D, Particles Fields
Journal Volume
50
Journal Issue
7
Journal Page Range
p. 4258-4264.
ISSN
0556-2821
CODEN
PRVDAQ

Optional Information

Collaborations
(The E705 Collaboration).