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Search for the familon via B-+/-->pi X-+/-(0), B-+/-->(KX0)-X-+/-, and B-0 ->(KSX0)-X-0 decays
Ammar, Raymond G. Bean, Alice Besson, David Zeke Zhao, X.
Ammar, Raymond G.
Bean, Alice
Besson, David Zeke
Zhao, X.
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Abstract
We have searched for the two-body decay of the B meson to a light pseudoscalar meson h = pi (+/-), K+/-, K-S(0) and a massless neutral feebly interacting particle X-0 such as the familon, the Nambu-Goldstone boson associated with a spontaneously broken global family symmetry. We find no significant signal by analyzing a data sample containing 9.7 X 10(6) B(B) over bar mesons collected with the CLEO detector at the Cornell Electron Storage Ring, and set 90% C.L. upper limits B(B+/- --> h(+/-)X(0)) = 4.9 X 10(-5) and B(B-0 --> (KSX0)-X-0) = 5.3 X 10(-5). These limits correspond to a lower bound of approximately 10(8) GeV on the family symmetry breaking scale with vector coupling involving the third generation of quarks.
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2001-12
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AMERICAN PHYSICAL SOC
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e271801.pdf
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Ammar, R, Bean, A, et al. Search for the familon via B-+/-->pi X-+/-(0), B-+/-->(KX0)-X-+/-, and B-0 ->(KSX0)-X-0 decays. PHYSICAL REVIEW LETTERS. December 2001. 87(27)