Center for Russian, East European, and Eurasian Studies Scholarly Publications: Recent submissions

Now showing items 461-480 of 546

    • Measurements of inclusive B ->psi production 

      Ammar, Raymond G.; Besson, David Zeke; Zhao, X. (AMERICAN PHYSICAL SOC, 2002-12)
      Using the combined CLEO II and CLEO II.V data sets of 9.1 fb(-1) at the Y(4S), we measure properties of psi mesons produced directly from decays of the B meson, where "B" denotes an admixture of B+, B-, B-0, and (B) over ...

    • Branching fractions of tau leptons to three charged hadrons 

      Besson, David Zeke; Zhao, X. (AMERICAN PHYSICAL SOC, 2003-05)
      From electron-positron collision data collected with the CLEO detector operating at Cornell Electron Storage Ring near roots=10.6 GeV, improved measurements of the branching fractions for tau decays into three explicitly ...

    • Measurement of the decay amplitudes and branching fractions of B->J/psi K-* and B->J/psi K decays 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1997-12)
      Using data taken with the CLEO II detector at the Cornell Electron Storage Ring, we present the first full angular analysis in the color-suppressed modes B-0 --> J/psi K*(0) and B+ --> J/psi K*(+). This leads to a complete ...

    • Analysis of D+->K-S((0))K+ and D+->K-S((0))pi(+) 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1997-04)
      Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we present new measurements of the branching fractions for D+ --> KSK+ and D+ --> K-S pi(+). These results are combined with other CLEO ...

    • First observation of inclusive B decays to the charmed strange baryons xi(0)(c) and xi(+)(c) 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1997-11)
      Using data collected in the region of the Upsilon(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring (CESR), we present the first observation of B mesons decaying into the charmed strange ...

    • Culture and History Matter: Russia's Search for Identity after the Fall 

      Carlson, Maria (2007-04-11)
      Maria Carlson, professor and associate chair of Slavic Languages and Literatures at KU, presented the lecture “Culture and History Matter: Russia’s Search for Identity After the Fall” as the 2007 KU faculty speaker in the ...

    • Observation of eta '(c) production in gamma gamma fusion at CLEO 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2004-04)
      We report on the observation of the eta(c)'(2(1)S(0)), the radial excitation of the eta(c)(1(1)S(0)) ground state of charmonium, in the two-photon fusion reaction gammagamma --> eta(c)' --> (KsK+/-)-K-0 pi(-/+) in 13.6 ...

    • Flavor-specific inclusive B decays to charm 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, G. J. (AMERICAN PHYSICAL SOC, 1998-02)
      We have measured the branching fractions for B --> (D) over bar X, B --> DX, and B --> (D) over bar Xl(+)v. From these results and some previously measured branching fractions, we obtain B(b --> c (c) over bar s) = (21.9 ...

    • Observation of B+->omega K+ and search for related B decays modes 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1998-07)
      We have searched for two-body charmless decays of B mesons to purely hadronic exclusive final states including omega or phi mesons using data collected with the CLEO II detector. With this sample of 6.6 x 10(6) B mesons ...

    • Search for rare and forbidden eta ' decays 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, X. (AMERICAN PHYSICAL SOC, 2000-01)
      We have searched for rare and forbidden decays of the eta' meson in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb(-1) of e(+)e(-) collisions at 10.6 GeV center-of-mass energy at the Cornell ...

    • Investigation of semileptonic B meson decays to p-wave charm mesons 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1998-05)
      We have studied semileptonic B meson decays with a p-wave charm meson in the final state using 3.29 x 10(6) B (B) over bar events collected with the CLEO II detector at the Cornell Electron-Positron Storage Ring. We find ...

    • Observation of the radiative decay D*+-> D+gamma 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1998-05)
      We have observed a signal for the decay D*(+) --> D(+)gamma at a significance of 4 standard deviations. From the measured branching ratio B(D*(+) --> D(+)gamma)/B(D*(+) --> D(+)pi(0)) = 0.055 +/- 0.014 +/- 0.010 we find ...

    • Two-body B meson decays to eta and eta ': Observation of B ->eta ' K 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1998-04)
      In a sample of 6.6 x 10(6) produced B mesons we have observed decays B --> eta'K, with branching fractions B(B+ --> eta'K+)= (6.5(-1.4)(+1.5) +/- 0.9) X 10(-5) and B(B-0 --> eta'K-0) = (4.7(-2.0)(+2.7) +/- 0.9) X 10(-5). ...

    • Observation of exclusive two-body B decays to kaons and pions 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1998-04)
      We have studied two-body charmless hadronic decays of B mesons into the final states pi pi, K pi and KK. Using 3.3 x 10(6) B (B) over bar pairs collected with the CLEO-II detector, we have made the first observation of the ...

    • Observation of high momentum eta(l) production in B decays 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1998-08)
      We report the first observation of B --> eta'X transitions with high momentum eta' mesons. We observe 39.0 +/- 11.6 B decay events with 2.0 < p(eta') < 2.7 GeV/c, the high momentum region where background from b --> c ...

    • Dalitz analysis of D-0 -> K-S(0)pi(+)pi(-) 

      Ammar, Raymond G.; Besson, David Zeke; Zhao, X. (AMERICAN PHYSICAL SOC, 2002-12)
      In e(+)e(-) collisions using the CLEO detector, we have studied the decay of the D-0 to the final state K(S)(0)pi(+)pi(-) with the initial flavor of the D-0 tagged by the decay D*+-->D(0)pi(+). We use the Dalitz technique ...

    • Constraints on cosmic neutrino fluxes from the Antarctic Impulsive Transient Antenna experiment 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2006-05)
      We report new limits on cosmic neutrino fluxes from the test flight of the Antarctic Impulsive Transient Antenna (ANITA) experiment, which completed an 18.4 day flight of a prototype long-duration balloon payload, called ...

    • First search for the flavor changing neutral current decay D-0 -> gamma gamma 

      Ammar, Raymond G.; Besson, David Zeke (AMERICAN PHYSICAL SOC, 2003-03)
      Using 13.8 fb(-1) of data collected at or just below the Y(4S) with the CLEO detector, we report the result of a search for the flavor changing neutral current process D-0 --> gammagamma. We observe no significant signal ...

    • Measurement of B(D-0 -> K-pi(+)) using partial reconstruction of (B)over-bar -> D(*+)Xl(-)(nu)over-bar 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Darling, C.; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1998-04)
      We present a measurement of the absolute branching fraction for D-0 --> K- pi(+) using the reconstruction of the decay chain (B)over-bar --> D(*+)Xl(-)(v)over-bar, D*+ --> D-0 pi(+) when only the lepton and the low-momentum ...

    • Measurement of B(D+->(K)over-bar(*0)l(+)nu(l)) 

      Ammar, Raymond G.; Besson, David Zeke; Zhao, X. (AMERICAN PHYSICAL SOC, 2002-11)
      Using 13.53 fb(-1) of CLEO data, we have measured the ratios of the branching fractions R-e(+),R-mu(+) and the combined branching fraction ratio R-l(+), defined by R-l(+)=[B(D+-->(K) over bar (*0)l(+)nu(l))]/[B(D+-->K(-) ...