摘要
We have searched in the decays of the Υ{hooked}(1S), Υ{hooked}(2S) and B mesons for the narrow state, γ, seen by the Mark II group in radiative ψ decay. We find the product branching fractions B[Υ{hooked}(1S) → γγ]·B[γ → K+K-], B[Υ{hooked}(2S) → γ γ]· B[γ → K+K-] and B[B → γX]·B[γ → K+K-] to be less than 2×10-4, 9×10-5 and 3×10-3, respectively at 90% confidence level. These limits constrain theoretical models if the γ is interpreted as a Higgs boson.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 277-280 |
頁數 | 4 |
期刊 | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
卷 | 137 |
發行號 | 3-4 |
DOIs | |
出版狀態 | 已出版 - 29 3月 1984 |