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

Now showing items 441-460 of 546

    • First observation and Dalitz analysis of the D-0 -> K-S(0)eta pi(0) decay 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2004-09)
      Using 9.0 fb(-1) of integrated luminosity in e(+)e(-) collisions near the Y(4S) mass collected with the CLEO II.V detector we report the first observation of the decay D-0-->K(S)(0)etapi(0). We measure the ratio of branching ...

    • Measurement of the form factors for (B)over-bar(0)->D*(+)l(-)(nu)over-bar 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1996-05)
      Using a sample of 2.6 x 10(6) Upsilon(4S) --> B (B) over bar events collected with the CLE (O) over right arrow II detector at the Cornell Electron Storage Ring, we have measured the form factors for (B) over bar(0) --> ...

    • Limit on the two-photon production of the glueball candidate f(J)(2220) at the Cornell electron storage ring 

      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)
      We use the CLEO detector at the Cornell e(+)e(-) storage ring, CESR, to search for the two-photon production of the glueball candidate f(J)(2220) in its decay to KsKs. We present a restrictive upper limit on the product ...

    • First observation of tau->3 pi eta nu(tau) and tau->f(1)pi nu(tau) 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, 1997-09)
      We have observed new channels for tau decays with an eta in the final state. We study 3-prong tau decays, using the eta --> gamma gamma and eta --> 3 pi(0) decay modes and 1-prong decays with two pi(0)'s using the eta --> ...

    • Observation of B -> K-S(0)pi(+)pi(-) and evidence for B -> K-*+/-pi(-/+) 

      Ammar, Raymond G.; Besson, David Zeke; Zhao, X. (AMERICAN PHYSICAL SOC, 2002-12)
      We report on a search for charmless hadronic B decays to the three-body final states K(S)(0)h(+)pi(-), K(+)h(-)pi(0), K(S)(0)h(+)pi(0) (h(+/-) denotes a charged pion or kaon), and their charge conjugates, using 13.5 fb(-1) ...

    • First observation of the Cabibbo suppressed decay B+->(D)over-bar(0)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, 1998-06)
      We have observed the decay B+ --> (D) over bar(0)K(+), using 3.3 x 10(6) <B(B)over bar> pairs collected with the CLEO II detector at the Cornell Electron Storage Ring. We find the ratio of branching fractions R = B(B+ --> ...

    • Form-factor ratio measurement in lambda(+)(c)-]lambda-e(+)nu(e) 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1995-07)
      The angular distributions of the decay Lambda(c)(+) --> Lambda e(+)nu(e) have been studied using the CLEO II detector. By performing a three-dimensional maximum likelihood fit, the form factor ratio R = f(2)/f(1) is ...

    • Measurement of the (B)over-bar->Dl(nu)over-bar partial width and form factor parameters 

      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, 1997-09)
      We have studied the decay (B) over bar --> Dl<(nu)over bar>, where I = e or mu. From a fit to the differential decay rate d Gamma/dw we measure the rate normalization F-D (1)\V-cb\ and form factor slope <(rho)over cap>(2)(D), ...

    • Observation of the decay D-s(+)->omega 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, 1997-08)
      Using e(+)e(-) annihilation data collected by the CLEO II detector at CESR, we have observed the decay D-s(+)-->omega pi(+). This final state may be produced through the annihilation decay df the D-s(+), or through final ...

    • Study of the decay tau(-)->2 pi(-)pi(+)3 pi(0)nu(tau) 

      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)
      The decay tau(-) --> 2 pi(-)pi(+)3 pi(0) nu(tau) has been studied with the CLEO II detector at the Cornell Electron Storage Ring. The branching fraction is measured to be (2.85 +/- 0.56 +/- 0.51) x 10(-4). The result is ...

    • Measurement of the muonic branching fractions of the narrow upsilon resonances 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2005-01)
      The decay branching fractions of the three narrow Y resonances to mu(+)mu(-) have been measured by analyzing about 4.3 fb(-1) e(+)e(-) data collected with the CLEO III detector. The branching fraction B(Y(1S)-->mu(+)mu(- ...

    • Search for the lepton-flavor-violating leptonic B-0 ->mu(+/-)tau(-/+) and B-0 -> e(+/-)tau(-/+) 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2004-12)
      We have searched a sample of 9.6x10(6) B (B) over bar events for the lepton-flavor-violating leptonic B decays, B-0-->mu(+/-)tau(-/+) and B-0-->e(+/-)tau(-/+). The tau lepton was detected through the decay modes tau-->lnu(&nu;) ...

    • Observation of an excited charmed baryon decaying into Xi(c)(0)pi(+) 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1996-07)
      Using data recorded by the CLEO II detector at the Cornell Electron Storage Ring, we report the first observation of an excited charmed baryon decaying into Xi c(0) pi(+). The state has mass difference M(Xi(c)(0) pi(+)) - ...

    • Wess-Zumino current and the structure of the decay tau(-)-> K-pi K--(+)nu(tau) 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2004-06)
      We present the first study of the vector (Wess-Zumino) current in tau(-)-->K(-)pi(-)K(+)nu(tau) decay using data collected with the CLEO III detector at the Cornell Electron Storage Ring. We determine the quantitative ...

    • Photon transitions in Upsilon(2S) and Upsilon(3S) decays 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2005-01)
      We have studied the inclusive photon spectra in Y(2S) and Y(3S) decays using a large statistics data sample obtained with the CLEO III detector. We present the most precise measurements of electric dipole (E1) photon ...

    • Measurement of the Ds(+) -> eta l(+)nu and Ds(+) → eta'l(+)nu branching ratios 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan (AMERICAN PHYSICAL SOC, 1995-11)
      Using the CLEO II detector we measure B(D-s(+) --> eta e(+)nu)/B(D-s(+) --> phi e(+)nu) = 1.24 +/- 0.12 +/- 0.15, B(D-s(+) --> eta'e(+)nu)/B(D-s(+) --> phi e(+)nu) = 0.43 +/- 0.11 +/- 0.07, and B(D-s(+) --> eta'e(+)nu)/B(D-s(+) ...

    • Measurement of the B -> Dl nu branching fractions and form factor 

      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, 1999-05)
      Using a sample of 3.3 x 10(6) B-meson decays collected with the CLEO detector at the Cornell Electron Storage Ring, we have studied B- --> D(0)l(-)<(nu)over bar> and (B) over bar(0) --> D(+)l(-)<(nu)over bar> decays, where ...

    • Observation of 1(-)0(-) final states from psi(2S) decays and e(+)e(-) annihilation 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2005-01)
      Using CLEO data collected from CESR e(+)e(-) collisions at the psi(2S) resonance and nearby continuum at roots = 3.67 GeV, we report the first significantly nonzero measurements of light vector-pseudoscalar hadron pair ...

    • First observation of the decay B-0 -> D*D+*(-) 

      Ammar, Raymond G.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Davis, Robin E. P.; Kotov, S.; Kravchenko, I.; Kwak, Nowhan; Zhou, L. (AMERICAN PHYSICAL SOC, 1999-04)
      We have observed four fully reconstructed B-0 --> D*+D*- candidates in 5.8 x 10(6) Y(4S) --> B (B) over bar decays recorded with the CLEO detector. The background is estimated to be 0.31 +/- 0.10 events. The probability ...

    • Observation of the hadronic transitions chi(b1,2)(2P) -> omega Upsilon(1S) 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2004-06)
      The CLEO Collaboration has made the first observations of hadronic transitions among bottomonium (b (b) over bar) states other than the dipion transitions among Y(nS) states. In our study of Y(3S) decays, we find a significant ...