We have searched for the two-body decay of the B meson to a light pseudoscalar meson h = pi(+/-),K+/-,K(0)(S) 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 9.7x10(6) BBbar mesons collected with the CLEO detector at the Cornell Electron Storage Ring, and set 90% C.L. upper limits italicB(B(+/-) --> h(+/-)X(0)) = 4.9x10(-5) and italicB(B(0) --> K(0)(S)X(0)) = 5.3x10(-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.

Helical tomotherapy with prone breast positioning can simultaneously cover the breast and regional nodes with acceptable uniformity and can provide reduced mean dose to proximal organs at risk compared with tomotherapy with supine position. The similarity of plan quality to existing data for conventional breast radiotherapy indicates that this planning approach is appropriate, and that the risk of secondary tumour formation should not be significantly greater.

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We present a measurement of the time-dependent CP-violating asymmetries in neutral B decays to the ϩ Ϫ CP eigenstate, and an updated measurement of the charge asymmetry in B 0 →K ϩ Ϫ decays. In a sample of 33 million ⌼(4S)→BB ¯decays collected with the BABAR detector at the SLAC PEP-II asymmetric B factory, we find 65 Ϫ11 ϩ12 ϩ Ϫ and 217Ϯ18 K ϩ Ϫ candidates and measure the asymmetry parameters S ϭ0.03 Ϫ0.56 ϩ0.53 Ϯ0.11, C ϭϪ0.25 Ϫ0.47 ϩ0.45 Ϯ0.14, and A K ϭϪ0.07Ϯ0.08Ϯ0.02, where the first error is statistical and the second is systematic.