Measurement of Chi(3510) and Chi(3555) Production in 190 Gev/c Negative Pion-Beryllium Interactions
Lukens, Patrick Thomas
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https://hdl.handle.net/2142/77373
Description
Title
Measurement of Chi(3510) and Chi(3555) Production in 190 Gev/c Negative Pion-Beryllium Interactions
Author(s)
Lukens, Patrick Thomas
Issue Date
1984
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Elementary Particles and High Energy
Language
eng
Abstract
Charmonium production in 190 GeV/c (pi)('-)-Be interactions has been observed. The states (chi)(3510) and (chi)(3555)are seen through their radiative decay into J/(psi), and are found to correspond to 0.29 (+OR-) 0.09 of total J/(psi) production for J/(psi)'s with x(,f) > 0.2. The rate of production for the two (chi) states appears as B(sigma)((chi)(3555)/B(sigma)((chi)(3510) = 0.60 (+OR-) 0.35. The fraction of J/(psi)'s produced through (chi) decay appears to rise with higher x(,f). For J/(psi)'s with x(,f) > 0.42, (chi) decay is responsible for 0.345 (+OR-) 0.09 of the total J/(psi) sample, with the two states produced at the rate B(sigma)((chi)(3555)/B(sigma)((chi)(3510) = 0.82 (+OR-) 0.45.
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