G. Viehhauser
Cornell University
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Featured researches published by G. Viehhauser.
Physical Review D | 2002
S. A. Dytman; James Mueller; S. Nam; V. Savinov; S. Chen; J. W. Hinson; Junghoon Lee; D. H. Millger; V. Paylunin; E. I. Shibata; I. P J Shipsey; D. Cronin-Hennessy; A. L. Lyon; C. S. Park; W. Park; E. H. Thorndike; T. E. Coah; Y. S. Gao; F. Liu; Y. Maravin; R. Stroynowski; M. Artuso; S. Blusk; C. Boulahouache; K. Bukin; E. Dambasuren; K. Khroustalev; R. Mountain; R. Nandakumar; T. Skwarnicki
Using data collected by the CLEO detector in the Upsilon(4S) region, we report new measurements of the exclusive decays of B mesons into final states of the type Lambda_c^+ p-bar n(pi), where n=0,1,2,3. We find signals in modes with one, two and three pions and an upper limit for the two body decay Lambda_c^+ pbar. We also make the first measurements of exclusive decays of B mesons to Sigma_c p-bar n(pi), where n=0,1,2. We find signals in modes with one and two pions and an upper limit for the two body decay Sigma_c p-bar. Measurements of these modes shed light on the mechanisms involved in B decays to baryons.
Physical Review D | 2002
S. Chen; J. W. Hinson; Junghoon Lee; D. H. Miller; V. Pavlunin; E. I. Shibata; I. P. J. Shipsey; D. Cronin-Hennessy; A. L. Lyon; C. S. Park; W. Park; E. H. Thorndike; T. E. Coan; Y. S. Gao; F. Liu; Y. Maravin; R. Stroynowski; M. Artuso; C. Boulahouache; K. Bukin; E. Dambasuren; K. Khroustalev; R. Mountain; R. Nandakumar; T. Skwarnicki; S. Stone; J. Wang; A. H. Mahmood; S. E. Csorna; I. Danko
We have searched for lepton flavor violating decays of the tau lepton with one or two KS0 mesons in the final state. The data used in the search were collected with the CLEO II and II.V detectors at the Cornell Electron Storage Ring (CESR) and correspond to an integrated luminosity of 13.9 fb^-1 at the Upsilon(4S) resonance. No evidence for signals were found, therefore we have set 90% confidence level (C.L.) upper limits on the branching fractions B(tau -> e KS0) mu KS0) e 2KS0) mu 2KS0) < 3.4e-6. These represent significantly improved upper limits on the two-body decays and first upper limits on the three-body decays.
Physical Review D | 2002
A. H. Mahmood; S. E. Csorna; I. Danko; Z. Xu; G. Bonvicini; D. Cinabro; M. Dubrovin; S. McGee; A. Bornheim; E. Lipeles; S. P. Pappas; A. Shapiro; W. M. Sun; A. J. Weinstein; G. Masek; H. P. Paar; R. Mahapatra; R. J. Morrison; H. N. Nelson; R. A. Briere; G. P. Chen; T. Ferguson; G. Tatishvili; H. Vogel; N. E. Adam; J. P. Alexander; C. Bebek; K. Berkelman; F. Blanc; V. Boisvert
The Xi^+_c lifetime is measured using 9.0 fb^-1 of e+e- annihilation data collected on and just below the Upsilon(4S) resonance with the CLEO II.V detector at CESR. This is the first measurement of the Xi^+_c lifetime from a collider experiment. Using an unbinned maximum likelihood fit, the Xi^+_c lifetime is measured to be 503 +/- 47 (stat.) +/- 18 (syst.) fs. The precision of this measurement is comparable to previous measurements carried out by fixed target experiments with different sources of systematic uncertainties.
Physical Review D | 2001
P. Avery; C. Prescott; A. I. Rubiera; H. Stoeck; J. Yelton; R. M. Hans; E. Johnson; I. Karliner; M. A. Marsh; C. Plager; C. Sedlack; M. Selen; J. J. Thaler; J. Williams; L. Gibbons; B. Gittelman; S. W. Gray; D. L. Hartill; B. K. Heltsley; P. I. Hopman; L. Hsu; C. D. Jones; J. Kandaswamy; D. L. Kreinick; M. Lohner; A. Magerkurth; T. O. Meyer; N. B. Mistry; E. Nordberg; M. Palmer
We search for CP non-conservation in the decays of tau leptons produced via
Physical Review D | 2001
A. Gritsan; J. P. Alexander; R. Baker; C. Bebek; B. E. Berger; K. Berkelman; F. Blanc; V. Boisvert; D. G. Cassel; P. S. Drell; J. E. Duboseq; K. M. Ecklund; R. Ehrlich; P. Gaidarev; L. Gibbons; B. Gittelman; S. W. Gray; D. L. Hartill; B. K. Heltsley; P. I. Hopman; L. Hsu; C. D. Jones; J. Kandaswamy; D. L. Kreinick; M. Lohner; A. Magerkurth; T. O. Meyer; N. B. Mistry; E. Nordberg; M. Palmer
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