Using 116.1 fb(-1) of data collected by the BABAR detector, we present an analysis of xi(c)(0) production in B decays and from the cc continuum, with the xi(c)(0) decaying into omega- K+ and xi- pi+ final states. We measure the ratio of branching fractions B(xi(c)(0) --> omega- K+)/B(xi(c)(0) --> xi- pi+) spectrum is measured on and 40 MeV below the upsilon(4S) resonance. From these spectra the branching fraction product B(B --> xi(c)(0)X) x B(xi(c)(0) --> xi- pi+) is measured to be (2.11 +/- 0.19 +/- 0.25) x 10(-4), and the cross-section product sigma(e+ e- --> xi(c)(0)X) x B(xi(c)(0) --> xi- pi+) from the continuum is measured to be (388 +/- 39 +/- 41) fb at a center-of-mass energy of 10.58 GeV.

We report measurements of the inclusive electron momentum spectra in decays of charged and neutral B mesons, and of the ratio of semileptonic branching fractions BB ! Xe and BB 0 ! Xe. These were performed on a sample of 231 10 6 B B events recorded with the BABAR detector at the 4S resonance. Events are selected by fully reconstructing a hadronic decay of one B meson and identifying an electron among the decay products of the recoiling B meson. We obtain BB ! Xe=BB 0 ! Xe 1:074 0:041 stat 0:026 syst .

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We present the first measurement of the D*(+) width using 9/fb of e(+)e(-) data collected near the Upsilon(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking techniques and a reconstruction method that takes advantage of the small vertical size of the Cornell Electron-positron Storage Ring beam spot to measure the energy release distribution from the D*(+)-->D(0)pi(+) decay. We find gamma(D*(+)) = 96+/-4 (stat)+/-22 (syst) keV. We also measure the energy release in the decay and compute Delta m identical with m(D*(+))-m(D(0)) = 145.412+/-0.002 (stat)+/-0.012 (syst) MeV/c(2).

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We report the results of a search for T, CP, CPT, and violation in B0-B0 mixing using an inclusive dilepton sample collected by the BABAR experiment at the PEP-II factory. Using a sample of 232 x 10(6) BB pairs, we measure the T and CP violation parameter |q/p| - 1 = (-0.8 +/- 2.7(stat) +/- 1.9(syst) x 10(-3), and the CPT and CP parameters Imz = (13.9 +/- 7.3(stat) +/- 3.2(syst)) x 10(-3) and Delta Gamma x Rez = (7.1 +/- 3.9(stat) +/- 2.0(stat)) x 10(-3) ps(-1). The statistical correlation between the measurements of Imz and Delta Gamma x Rez is 76%.

Using 13.5 fb Ϫ1 of e ϩ e Ϫ annihilation data collected with the CLEO II detector, we have observed a narrow resonance decaying to D s * ϩ 0 with a mass near 2.46 GeV/c 2. The search for such a state was motivated by the recent discovery by the BaBar Collaboration of a narrow state at 2.32 GeV/c 2 , the D sJ * (2317) ϩ , that decays to D s ϩ 0. Reconstructing the D s ϩ 0 and D s * ϩ 0 final states in CLEO data, we observe peaks in both of the corresponding reconstructed mass difference distributions, ⌬M (D s 0)ϭM (D s 0)ϪM (D s) and ⌬M (D s * 0)ϭM (D s * 0)ϪM (D s *), both of them at values near 350 MeV/c 2. We interpret these peaks as signatures of two distinct states, the D sJ * (2317) ϩ plus a new state, designated as the D sJ (2463) ϩ. Because of the similar ⌬M values, each of these states represents a source of background for the other if photons are lost, ignored or added. A quantitative accounting of these reflections confirms that both states exist. We have measured the mean mass differences ͗⌬M (D s 0)͘ϭ350.0Ϯ1.2 (stat)Ϯ1.0 (syst) MeV/c 2 for the D sJ * (2317) ϩ state, and ͗⌬M (D s * 0)͘ϭ351.2Ϯ1.7 (stat)Ϯ1.0 (syst) MeV/c 2 for the new D sJ (2463) ϩ state. We have also searched, but find no evidence, for decays of the two states via the channels D s * ϩ ␥, D s ϩ ␥, and D s ϩ ϩ Ϫ. The observations of the two states at 2.32 and 2.46 GeV/c 2 , in the D s ϩ 0 and D s * ϩ 0 decay channels, respectively, are consistent with their interpretations as cs mesons with an orbital angular momentum Lϭ1 and spin and parity J P ϭ0 ϩ and 1 ϩ .

We present the first measurement of the D* ϩ width using 9/fb of e ϩ e Ϫ data collected near the ⌼(4S) resonance by the CLEO II.V detector. Our method uses advanced tracking techniques and a reconstruction method that takes advantage of the small vertical size of the CESR beam spot to measure the energy release distribution from the D* ϩ →D 0 ϩ decay. We find ⌫(D* ϩ )ϭ96Ϯ4 (statistical)Ϯ22 (systematic) keV. We also measure the energy release in the decay and compute ⌬mϵm D* ϩϪ m D 0ϭ 145.412Ϯ0.002 (statistical) Ϯ0.012 (systematic) MeV/c 2 .