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Confirmation of dip-bump structure in backward. pi. /sup -hyphen/d elastic scattering: Possible evidence for dibaryon resonances

Journal Article · · Phys. Rev. Lett.; (United States)
The backward differential cross section for ..pi../sup -hyphen/d elastic scattering has been measured at incident momenta between 420 and 1160 MeV/c. The data show two bumps at around 670 and 1100 MeV/c, two dips near 630 and 980 MeV/c, and a break at 550 MeV/c. The result of a phenomenological fit is consistent with the existence of three dibaryon resonances in this energy region. A theoretical calculation of Kanai et al. agrees well with the data below 800 MeV/c, but the agreement becomes worse above 800 MeV/c.
Research Organization:
Department of Physics, Hiroshima University, Hiroshima 730, Japan
OSTI ID:
6259747
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 50:6; ISSN PRLTA
Country of Publication:
United States
Language:
English

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