Title

Search for the familon via B± → π±X0, B± → K±X0, and B0 → Ks0X0 decays

Document Type

Article

Publication Date

12-31-2001

Abstract

A search for the decay of the meson B →H X and B →K X was performed. The upper limits for the branching fractions constrained new physics leading to two-body B decays involving any massless neutral feebly interacting particle X . The first lower bound on the family symmetry breaking scale involving the third generation of quarks at 10 GeV was obtained by applying the limit to the case where X was a familon. ± ± 0 0 0 0 0 8 0 s

Publication Name

Physical Review Letters

Volume Number

87

First Page

2718011

Last Page

2718015

Issue Number

27 I

Article

271801

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