ATTENTION: The software behind KU ScholarWorks is being upgraded to a new version. Starting July 15th, users will not be able to log in to the system, add items, nor make any changes until the new version is in place at the end of July. Searching for articles and opening files will continue to work while the system is being updated. If you have any questions, please contact Marianne Reed at mreed@ku.edu .

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

Now showing items 441-460 of 554

    • A search for nonresonant B+->h(+)h(-)h(+) 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, 1996-11)
      We use data collected by the CLEO II detector at the Cornell Electron Storage Ring (CESR) to search for B+ --> h(+)h(-)h(+) (nonresonant) decays, where h(+/-) can be either pi(+/-), K-+/-, or p((p) over bar). We see no ...

    • Observation of two excited charmed baryons decaying into Lambda(+)(c)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, 1997-03)
      Using data recorded by the CLEO-II detector at CESR, we report evidence of a pair of excited charmed baryons, one decaying into Lambda(c)(+)pi(+)2 and the other into Lambda(c)(+)pi(-). The doubly charged state has a measured ...

    • Observation of two narrow states decaying into Xi(+)(c)gamma and Xi(0)(c)gamma 

      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, 1999-01)
      We report the first observation of two narrow charmed strange baryons decaying to Xi(c)(+) gamma and Xi(c)(0)gamma, respectively, using data from the CLEO II detector at the Cornell Electron Storage Ring. We interpret the ...

    • New measurement of B -> D*pi branching fractions 

      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, 1998-03)
      The decays Y(4S) --> <B(B)over bar>, followed by B --> D*pi and D* --> D pi, permit reconstruction of all kinematic quantities that describe the sequence without reconstruction of the D, with reasonably low backgrounds. ...

    • Search for the decays B-0->D(*)D+(*)(-) 

      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 the CLEO-II data set we have searched for the decays B-0 --> D-(*+)D-(*-) We observe one candidate signal event for the decay B-0 --> D*+D*- with an expected background of 0.022 +/- 0.011 events. This yield corresponds ...

    • Observation of exclusive B decays to final states containing a charmed baryon 

      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, 1997-10)
      Using data collected in the region of the Upsilon(4S) resonance with the CLEO-II detector, we report on the first observation of exclusive decays of the B meson to final states with a charmed baryon. We have measured the ...

    • First observation of the decay tau(-)-> K*(-)eta nu(tau) 

      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, 1999-01)
      The decay tau(-) --> K*(-) eta nu(tau) has been observed with the CLEO II detector. The K*(-) is reconstructed in two decay channels, K*(-) -->, KSpi- --> pi(-)pi(+)pi(-) and K*(-) --> K- pi(0). The eta is reconstructed ...

    • First observations of Y(1S)->gamma pi(+)pi(-) and Y(1S)->gamma pi(0)pi(0) 

      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, 1999-01)
      We report on a study of exclusive radiative decays of the Y(1S) resonance collected with the CLEO II detector operating at the Cornell Electron Storage Ring. We present the first observation of the radiative decays Y(1S) ...

    • 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;) ...