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

Now showing items 401-420 of 546

    • Observation of a new charmed strange meson 

      Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H. (AMERICAN PHYSICAL SOC, 1994-03)
      Using the CLEO II detector, we have obtained evidence for a new meson decaying to D0K+. Its mass is 2573.2(-1.6)+1.7 +/- 0.8 +/- 0.5 MeV/c2 and its width is 16(-4)+5 +/- 3 MeV/C2. Although we do not establish its spin and ...

    • Observation of D(0) → K+pi- 

      Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H. (AMERICAN PHYSICAL SOC, 1994-03)
      Using the CLEO II data sample, with an integrated luminosity of 1.8 fb-1 at and near the UPSILON(4S) resonance, we have observed a signal for D0 --> K+pi-, which could be due to either D0D0BAR mixing or doubly Cabibbo ...

    • Observation of a narrow state decaying into XI(c)(+)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, 1995-12)
      Using data recorded by the CLEO-II detector at Cornell Electron Storage Ring (CESR), we report the first observation of a narrow state decaying into Xi(c)(+) pi(-). The state has mass difference M(Xi(c)(+) pi(-)) - M(Xi(c)(+)) ...

    • New decay modes of the lambda(+)(c) charmed baryon 

      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; Lam, H. (AMERICAN PHYSICAL SOC, 1995-05)

    • Observation of excited charmed baryon states decaying to Lambda(+)(c)pi(+)pi(-) 

      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; Lam, H. (AMERICAN PHYSICAL SOC, 1995-04)

    • First observation of the decay XI(+)(C)-]XI(0)E+NU(E) and an estimate of the XI(+)(C)/XI(0)(C) lifetime ratio 

      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; Lam, H. (AMERICAN PHYSICAL SOC, 1995-04)

    • First measurement of the rate for the inclusive radiative penguin decay b -> s gamma 

      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; Lam, H. (AMERICAN PHYSICAL SOC, 1995-04)

    • Semileptonic branching fractions of charged and neutral B mesons 

      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; Lam, H. (AMERICAN PHYSICAL SOC, 1994-12)

    • Search for neutrinoless decays of the tau lepton 

      Ammar, Raymond G.; Ball, S.; 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; Lam, H. (AMERICAN PHYSICAL SOC, 1994-10)
      A search for lepton flavor violating decays of the tau into either three charged leptons or one charged lepton and two charged hadrons was performed using 2.05 fb-1 of data collected by the CLEO-II experiment at the Cornell ...

    • Branching fractions for psi(2S)-to-J/psi transitions 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2005-06)
      We describe new measurements of the inclusive and exclusive branching fractions for psi(2S) transitions to J/psi using e(+)e(-) collision data collected with the CLEO detector operating at CESR. All branching fractions and ...

    • Search for B -> l(nu)over bar(l) 

      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; Lam, H. (AMERICAN PHYSICAL SOC, 1995-07)
      We search for the decays B- --> l(-)<(nu)over bar>(l) in a sample of 2.2 x 10(6) charged B decays using the CLEO detector. We see no evidence for a signal in any channel and set upper limits on the branching fractions of ...

    • Observation of the h(c)((1)P1) state of charmonium 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2005-09)
      The h(c)(P-1(1)) state of charmonium has been observed in the reaction psi(2S)->pi(0)h(c)->(gamma gamma)(gamma eta(c)) using 3.08x10(6) psi(2S) decays recorded in the CLEO detector. Data have been analyzed both for the ...

    • Observation of psi(3770)->pi pi J/psi and measurement of Gamma(ee)[psi(2S)] 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2006-03)
      We observe signals for the decays psi(3770)-> XJ/psi from data acquired with the CLEO detector operating at the CESR e(+)e(-) collider with root s=3773 MeV. We measure the following branching fractions B(psi(3770)-> XJ/psi) ...

    • Measurement of cabibbo-suppressed decays of the tau lepton 

      Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H. (AMERICAN PHYSICAL SOC, 1994-08)
      Branching ratios for the dominant Cabibbo-suppressed decays of the tau lepton have been measured by CLEO II in e+e- annihilation at the Cornell Electron Storage Ring (square-root s approximately 10.6 GeV) using kaons with ...

    • Observation of inclusive B decays to the charmed baryons sigma(c)++ and delta(c)0 

      Ammar, Raymond G.; Ball, S.; Baringer, Philip S.; Bean, Alice; Besson, David Zeke; Coppage, Don; Copty, N.; Davis, Robin E. P.; Hancock, N.; Kelly, M.; Kwak, Nowhan; Lam, H. (AMERICAN PHYSICAL SOC, 1994-09)
      Using data collected in the region of the UPSILON(4S) resonance with the CLEO II detector operating at the Cornell Electron Storage Ring, we report on evidence for the production of SIGMA(c)++ and SIGMA(c)0 baryons in B ...

    • Measurement of the branching fraction beta(tau(-) -> pi(0) nu(tau)) 

      Ammar, Raymond G.; Ball, S.; 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; Lam, H. (AMERICAN PHYSICAL SOC, 1994-06)
      Using data from the CLEO II detector at the Cornell Electron Storage Ring, we measure B(tau- --> h-pi0nu(tau)) where h- refers to either pi- or K-. We use three different methods to measure this branching fraction. The ...

    • Experimental limits on weak annihilation contributions to b -> ul nu decays 

      Besson, David Zeke (AMERICAN PHYSICAL SOC, 2006-03)
      We present the first experimental limits on high-q(2) contributions to charmless semileptonic B decays of the form expected from the weak annihilation (WA) decay mechanism. Such contributions could bias determinations of ...

    • Search for neutrinoless tau decays involving pi(0) or eta 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, 1997-08)
      We have searched for lepton flavor violating decays of the tau lepton using final states with an electron Or a muon and one or two pi(0) or eta mesons but no neutrinos. The data used in the search were collected with the ...

    • Further search for the two-photon production of the glueball candidate f(J)(2220) 

      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, 1998-10)
      The CLEO II detector at the e(+)e(-) storage ring CESR has been used to search for two-photon production of the f(J)(2220) decaying into pi(+)pi(-). No evidence fora signal is found in 4.77 fb(-1) of data and a 95% C.L. ...

    • First measurement of the B->pi l nu and B->rho(omega)l nu branching fractions 

      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, 1996-12)
      CLEO has studied B decays to pi l nu, rho l nu, and omega l nu, where l = e or mu, by incorporating the missing momentum into full B reconstruction. With the B-0 and B+ modes combined according to isospin predictions for ...