@article{26441d9040fd4a1c83caa599665f5442,
title = "Search for the Familon via B ± → π ± X 0 , B ± → K ± X 0 , and B 0 → K s 0 X 0 Decays",
abstract = " We have searched for the two-body decay of the B meson to a light pseudoscalar meson h = π ± , 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 × 10 6 BB ― mesons collected with the CLEO detector at the Cornell Electron Storage Ring, and set 90% C.L. upper limits V and B ± → h ± X 0 ) = 4.9 × 10 -5 and B(B → K S 0 X 0 ) = 5.3 × 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.",
author = "{CLEO Collaboration} and R. Ammar and A. Bean and D. Besson and X. Zhao and S. Anderson and Frolov, {V. V.} and Lee, {S. J.} and R. Poling and A. Smith and Stepaniak, {C. J.} and J. Urheim and S. Ahmed and Alam, {M. S.} and Yuichi Kubota and L. Jian and L. Ling and M. Saleem and S. Timm and F. Wappler and A. Anastassov and E. Eckhart and Gan, {K. K.} and C. Gwon and T. Hart and K. Honscheid and D. Hufnagel and H. Kagan and R. Kass and Pedlar, {T. K.} and Thayer, {J. B.} and {von Toerne}, E. and Zoeller, {M. M.} and Richichi, {S. J.} and H. Severini and P. Skubic and A. Undrus and V. Savinov and S. Chen and Hinson, {J. W.} and J. Lee and Miller, {D. H.} and V. Pavlunin and Shibata, {E. I.} and Shipsey, {I. P.J.} and D. Cronin-Hennessy and Lyon, {A. L.} and Thorndike, {E. H.} and Coan, {T. E.} and Gao, {Y. S.}",
year = "2001",
month = dec,
day = "31",
doi = "10.1103/PhysRevLett.87.271801",
language = "English (US)",
volume = "87",
pages = "271801--271801--5",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "27 I",
}