Editorial
An analysis of the OZI-allowed decays Y (10.54) based on the pseudo-dimension rule
N. Kolyvodiakos
; Department of Physics, Jadavpur University, Calcutta 700032, India
S. Saha
; Department of Physics, Jadavpur University, Calcutta 700032, India
P. Mukhopadhyay
; Department of Physics, Jadavpur University, Calcutta 700032, India
Abstract
This paper investigates the OZI-allowed decays of the vector bottomium Y (10.54). For this resonance the OZI-favoured decay modes include BB and BB* provided the BB* mode is also energetically allowed. In this paper the pseudo-dimension rule has been employed in the analysis of the decays Y (10.54) → BB, BB*. This analysis reveals that the decay Y (10.54) → BB is allowed by the pseudo-dimension rule according to which, however, the decay Y (10.54) → BB* is forbidden. This fact implies that the decay Y (10.54) → BB* should be relatively suppressed with respect to the decay Y (10.54) → BB. To be more specific, the pseudo-dimension rule claims that the former decay must be inhibited compared to the latter decay by a factor 10-3. This explains the experimentally observed strong suppression of the OZI-allowed decay Y (10.54) → BB*. It has also been pointed out that the phase space factor alone cannot account for the strong suppression of the BB* mode in Y (10.54)-decay.
Keywords
Hrčak ID:
328290
URI
Publication date:
1.12.1982.
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