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51. Measurement of Charge Asymmetries in Charmless HadronicBMeson Decays

Author

C. D. Jones, D. G. Cassel, B. E. Berger, N. Kwak, A. J. Weinstein, Tomasz Skwarnicki, J. Urheim, S. Schrenk, J. G. Smith, C. P. Jessop, R. Davis, Xingjiang Zhou, R. J. Morrison, Mats A Selen, H. N. Nelson, M. Lohner, A. J. Sadoff, I. Danko, T. O. Meyer, D. Peterson, M. Dickson, T. K. Pedlar, J. Roy, W. M. Sun, Ryszard Stroynowski, S. J. Richichi, S. Prell, D. L. Kreinick, K. W. McLean, D. Hufnagel, I. Karliner, L. K. Gibbons, V. V. Frolov, J. Gronberg, S.C. Timm, Richard Wilson, A. Gritsan, Yurii Maravin, B. I. Eisenstein, D. Y.J. Kim, V. Savinov, T. Hart, G. J. Zhou, P. S. Drell, T. E. Browder, Dj Lange, R. Godang, M. Schmidtler, D. Z. Besson, G. C. Moneti, R. M. Hans, C. Bebek, P. G. Thies, T. L. Coan, J. Ernst, G. Eigen, J. R. Patterson, T. Riehle, K. K. Gan, E. I. Shibata, G. Bonvicini, J. P. Alexander, J. J. Thaler, S. E. Csorna, Karl Berkelman, S. Schuh, L. Ling, H. P. Paar, R. Mountain, M. Saleem, C. Sedlack, E. von Toerne, J. J. O'Neill, Andreas Warburton, Z. Xu, E. Johnson, D. Cinabro, D. Ugolini, Sz Márka, M. M. Zoeller, Sheldon Stone, J. Zheng, R. Ammar, B. Gittelman, Alice Bean, A. Ershov, A. Shapiro, I. C. Lai, J. Lorenc, S. W. Gray, D. M. Asner, Paul Avery, C. Gwon, Jason Sang Hun Lee, I. P.J. Shipsey, P. M. Patel, J. G. Thayer, A. Undrus, V. Boisvert, A. Eppich, E. Nordberg, A. Wolf, S. Ahmed, D. Riley, N. Menon, Jiejun Wu, L. H. Thorndike, R. A. Briere, C. Boulahouache, Sacha E Kopp, M. A. Marsh, M. S. Alam, F. Würthwein, G. W. Brandenburg, P. Skubic, W. T. Ford, A. I. Rubiera, F. Blanc, G. E. Gladding, R. D. Kass, D. E. Jaffe, Vivek Sharma, M. L. Perl, R. Janicek, A. Smith, Daniel P Cronin-Hennessy, A. H. Mahmood, Yuichi Kubota, K. Kinoshita, Ilya Kravchenko, J. Fast, K. M. Ecklund, S. B. Athar, J. L. Rodriguez, H. Yamamoto, H. Schwarthoff, L. P. Perera, A. L. Lyon, J. W. Hinson, L. Jian, G. Viehhauser, N. B. Mistry, Marina Artuso, B. K. Heltsley, R. Ayad, E. M. Potter, E. Lipeles, S. J. Lee, G. D. Gollin, P. I. Hopman, E. Dambasuren, Jing Wang, G. Majumder, D. H. Miller, P. Gaidarev, T. Bergfeld, Harris Kagan, C.Y. Prescott, Jianqiao Ye, Shuai Chen, A. Anastassov, R. Baker, K. Honscheid, J. E. Duboscq, K. Bukin, D. L. Hartill, R. Poling, V. Pavlunin, C. R. Ng, I. Narsky, G. Masek, Sergey Karamnov, Horst Severini, T. Wlodek, M.A. Palmer, John Yelton, R. Mahapatra, K. W. Edwards, B. H. Behrens, X. Zhao, C. Plager, S. Anderson, A. Magerkurth, Y. Kwon, H. Marsiske, F. R. Wappler, Y. S. Gao, V. Fadeyev, B. Valant-Spaight, Yang Li, T. S. Hill, R. Ehrlich, A. D. Foland, and J. Williams

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Hyperon, FOS: Physical sciences, General Physics and Astronomy, Omega baryon, 01 natural sciences, Omega, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle decay, Pion, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics
Abstract

We search for CP-violating asymmetries (Acp) in the B meson decays to K+- pi-+, K+- pi0, Ks pi+-, K+- eta', and omega pi+-. Using 9.66 million Upsilon(4S) decays collected with the CLEO detector, the statistical precision on Acp is in the range of \pm 0.12 to \pm 0.25 depending on decay mode. While CP-violating asymmetries of up to \pm 0.5 are possible within the Standard Model, the measured asymmetries are consistent with zero in all five decay modes studied., 10 pages, 3 figures

Published
2000

52. Development of a robotic bridge maintenance system

Author

Brian E. Handlon, Leonhard E. Bernold, and Steven J. Lorenc

Subjects
Engineering, business.industry, Truss, Mechanical engineering, Robotics, Building and Construction, Bridge (nautical), Remote operation, Control and Systems Engineering, Teleoperation, Systems engineering, Robot, Bridge maintenance, Artificial intelligence, business, Construction automation, Civil and Structural Engineering
Abstract

This paper will expand on the Robotic Bridge Maintenance System (RBMS) developed by the Construction Automation and Robotics Laboratory (CARL) at North Carolina State University (NCSU). The system consists of a 4-dof robot, designed and built at NCSU, mounted on the end of a truck-mounted peeper crane. Additionally, a containment system is mounted in front of the robot to contain the toxic waste created by the removal of the lead-based paint from the bridge beams and trusses.

Published
2000

53. First Observation of the DecayB→J/ψφK

Author

Z. Xu, Sz Márka, A. Undrus, T. Hart, D. E. Jaffe, X. Zhao, K. Bukin, C.Y. Prescott, T. E. Coan, J. Gronberg, S.C. Timm, E. H. Thorndike, T. O. Meyer, Dj Lange, T. Riehle, Karl Berkelman, M. Saleem, A. D. Foland, Jianqiao Ye, A. J. Weinstein, D. L. Kreinick, John Yelton, R. Mahapatra, G. Bonvicini, J. P. Alexander, Tomasz Skwarnicki, C. Bebek, D. Ugolini, H. N. Nelson, R. M. Hans, Sacha E Kopp, T. Wlodek, M. S. Alam, T. E. Browder, L. Jian, S. W. Gray, S. Karamov, N. Menon, J. Roy, J. Williams, Y. Kwon, V. Savinov, I. Narsky, S. J. Richichi, G. Masek, Juliet Ritchie Patterson, W. M. Sun, Ryszard Stroynowski, Philip Baringer, D. Z. Besson, Daniel P Cronin-Hennessy, Marina Artuso, H. Marsiske, R. A. Briere, Xingjiang Zhou, J. J. Thaler, N. Kwak, C. Boulahouache, I. Danko, S. E. Csorna, Horst Severini, M. Dickson, T. K. Pedlar, Andreas Warburton, H. P. Paar, K. K. Gan, V. Fadeyev, W. T. Ford, A. I. Rubiera, M. M. Zoeller, I. P.J. Shipsey, Shuai Chen, A. Anastassov, L. P. Perera, R. D. Kass, J. L. Rodriguez, Ilya Kravchenko, B. Valant-Spaight, B. H. Behrens, I. Korolkov, D. L. Hartill, R. Poling, A. Wolf, A. Shapiro, M.A. Palmer, Y. S. Gao, R. Janicek, V. Pavlunin, C. R. Ng, J. W. Hinson, T. Bergfeld, L. K. Gibbons, V. V. Frolov, R. Baker, G. Viehhauser, E. Nordberg, K. Kinoshita, R. Ammar, G. C. Moneti, C. Sedlack, N. B. Mistry, B. K. Heltsley, G. W. Brandenburg, E. Lipeles, S. J. Lee, J. Lorenc, I. C. Lai, R. Davis, P. G. Thies, G. D. Gollin, D. G. Cassel, T. S. Hill, J. Zheng, S. Schuh, R. Ehrlich, D. Y.J. Kim, Jiejun Wu, S. Schrenk, M. A. Marsh, E. I. Shibata, F. Blanc, J. G. Smith, J. Fast, P. Skubic, C. P. Jessop, G. E. Gladding, F. Würthwein, H. Yamamoto, H. Schwarthoff, L. Ling, Vivek Sharma, Sheldon Stone, G. J. Zhou, A. Smith, D. Riley, S. Prell, Paul Avery, Alice Bean, K. M. Ecklund, R. Ayad, E. M. Potter, E. Johnson, A. L. Lyon, Jason Sang Hun Lee, E. von Toerne, S. B. Athar, P. I. Hopman, V. Boisvert, A. Eppich, A. Ershov, J. J. O'Neill, M. Lohner, Yurii Maravin, E. Dambasuren, Jing Wang, G. Majumder, D. Cinabro, J. Urheim, A. H. Mahmood, D. H. Miller, D. Hufnagel, P. Gaidarev, G. Eigen, B. Gittelman, M. L. Perl, I. Karliner, Yuichi Kubota, K. Honscheid, C. D. Jones, P. S. Drell, D. Peterson, K. W. McLean, J. Ernst, B. E. Berger, J. E. Duboscq, K. W. Edwards, B. I. Eisenstein, R. Godang, Richard Wilson, A. Gritsan, M. Schmidtler, H. Kagan, S. Ahmed, R. Mountain, R. J. Morrison, Mats A Selen, A. J. Sadoff, C. Plager, S. Anderson, A. Magerkurth, F. R. Wappler, D. M. Asner, Y. Li, C. Gwon, P. M. Patel, and J. G. Thayer

Subjects
Quark, Physics, Particle physics, Meson, Branching fraction, General Physics and Astronomy, High Energy Physics::Experiment, B meson, Event (particle physics)
Abstract

We present the first observation of the decay B{yields}J/{psi}{phi}K . Using 9.6x10{sup 6} BB meson pairs collected with the CLEO detector, we have observed ten fully reconstructed B{yields}J/{psi}{phi}K candidates, whereas the estimated background is 0.5{+-}0.2 event. We obtain a branching fraction of B(B{yields}J/{psi}{phi}K)=( 8.8{sup +3.5}{sub -3.0}[stat] {+-}1.3[syst])x10{sup -5} . This is the first observed B meson decay requiring the creation of an additional ss quark pair. (c) 2000 The American Physical Society.

Published
2000

54. Search for Rare and Forbiddenη′Decays

Author

R. A. Briere, B. H. Behrens, W. T. Ford, A. Gritsan, H. Krieg, J. Roy, J. G. Smith, J. P. Alexander, R. Baker, C. Bebek, B. E. Berger, K. Berkelman, F. Blanc, V. Boisvert, D. G. Cassel, M. Dickson, S. von Dombrowski, P. S. Drell, K. M. Ecklund, R. Ehrlich, A. D. Foland, P. Gaidarev, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, P. I. Hopman, C. D. Jones, D. L. Kreinick, T. Lee, Y. Liu, T. O. Meyer, N. B. Mistry, C. R. Ng, E. Nordberg, J. R. Patterson, D. Peterson, D. Riley, J. G. Thayer, P. G. Thies, B. Valant-Spaight, A. Warburton, P. Avery, M. Lohner, C. Prescott, A. I. Rubiera, J. Yelton, J. Zheng, G. Brandenburg, A. Ershov, Y. S. Gao, D. Y.-J. Kim, R. Wilson, T. E. Browder, Y. Li, J. L. Rodriguez, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, C. Plager, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, R. Janicek, P. M. Patel, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, D. Coppage, R. Davis, S. Kotov, I. Kravchenko, N. Kwak, X. Zhao, S. Anderson, V. V. Frolov, Y. Kubota, S. J. Lee, R. Mahapatra, J. J. O'Neill, R. Poling, T. Riehle, A. Smith, S. Ahmed, M. S. Alam, S. B. Athar, L. Jian, L. Ling, A. H. Mahmood, M. Saleem, S. Timm, F. Wappler, A. Anastassov, J. E. Duboscq, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, H. Kagan, R. Kass, J. Lorenc, H. Schwarthoff, M. B. Spencer, E. von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, A. Undrus, M. Bishai, S. Chen, J. Fast, J. W. Hinson, J. Lee, N. Menon, D. H. Miller, E. I. Shibata, I. P. J. Shipsey, Y. Kwon, A. L. Lyon, E. H. Thorndike, C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, V. Savinov, D. Ugolini, X. Zhou, T. E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, T. Wlodek, M. Artuso, R. Ayad, E. Dambasuren, S. Kopp, G. Majumder, G. C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, A. Titov, G. Viehhauser, J. C. Wang, A. Wolf, J. Wu, S. E. Csorna, K. W. McLean, S. Marka, Z. Xu, R. Godang, K. Kinoshita, I. C. Lai, P. Pomianowski, S. Schrenk, G. Bonvicini, D. Cinabro, R. Greene, L. P. Perera, G. J. Zhou, S. Chan, G. Eigen, E. Lipeles, M. Schmidtler, A. Shapiro, W. M. Sun, J. Urheim, A. J. Weinstein, F. Würthwein, D. E. Jaffe, G. Masek, H. P. Paar, E. M. Potter, S. Prell, V. Sharma, D. M. Asner, A. Eppich, J. Gronberg, T. S. Hill, D. J. Lange, R. J. Morrison, T. K. Nelson, J. D. Richman, and D. Roberts

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Eta meson, General Physics and Astronomy, Dalitz plot, Particle Data Group, Kinetic energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Matrix element, Cornell Electron Storage Ring, Nuclear Experiment, 010306 general physics
Abstract

We have searched for the rare decays of the eta prime meson to e+ e- eta, e+ e- pizero, e+ e- gamma, and e mu in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb^-1 of e+ e- collisions at the Cornell Electron Storage Ring. We find no signal in any of these modes, and set 90% confidence level upper limits on their branching fractions of 2.4 X 10^-3, 1.4 X 10^-3, 0.9 X 10^-3, and 4.7 X 10^-4, respectively. We also investigate the Dalitz plot of the common decay of the eta prime to pi+ pi- eta. We fit the matrix element with the Particle Data Group parameterization and find Re(alpha) = -0.021 +- 0.025, where alpha is a linear function of the kinetic energy of the eta.

Published
2000

55. [Untitled]

Author

J. Lorenc, Z. Pawelka, and A. Puszko

Subjects
Steric effects, Crystallography, Dipole, Bond dipole moment, Chemistry, Hydrogen bond, Computational chemistry, Chemical polarity, Intramolecular force, Ab initio, Molecule, Physical and Theoretical Chemistry, Condensed Matter Physics
Abstract

The dipole moments of 2-alkylaminoand 2-alkylnitramino-3(or 5)-methyl-4-nitropyridines and their N-oxides have been measured, as well as calculated, using vectorial summation of the group moments and by ab initio method. The estimated interaction dipole moments, μint, have been discussed in terms of the electronic and steric effects and intramolecular hydrogen bonding. Introduction of the NHCH3 group to position 2 in 4-nitropyridine strengthens the conjugation between the nitro group and ring nitrogen. The lack of such strengthening in 4-nitropyridine-N-oxides is explained as being due to formation of intramolecular hydrogen bond between the N-oxide group and the hydrogen of alkylamino group. Introduction of the nitramino group does not lead to marked modification of the charge distribution in a molecule. This fact may be explained by much weaker electron-donating ability of this group in comparison with the alkylamino group.

Published
2000

56. Evidence of New States Decaying intoΞc*π

Author

J. P. Alexander, R. Baker, C. Bebek, B. E. Berger, K. Berkelman, V. Boisvert, D. G. Cassel, D. S. Crowcroft, M. Dickson, S. von Dombrowski, P. S. Drell, K. M. Ecklund, R. Ehrlich, A. D. Foland, P. Gaidarev, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, P. I. Hopman, D. L. Kreinick, T. Lee, Y. Liu, T. O. Meyer, N. B. Mistry, C. R. Ng, E. Nordberg, M. Ogg, J. R. Patterson, D. Peterson, D. Riley, J. G. Thayer, P. G. Thies, B. Valant-Spaight, A. Warburton, C. Ward, M. Athanas, P. Avery, C. D. Jones, M. Lohner, C. Prescott, A. I. Rubiera, J. Yelton, J. Zheng, G. Brandenburg, R. A. Briere, A. Ershov, Y. S. Gao, D. Y.-J. Kim, R. Wilson, T. E. Browder, Y. Li, J. L. Rodriguez, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, C. Plager, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, R. Janicek, P. M. Patel, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, D. Coppage, R. Davis, S. Kotov, I. Kravchenko, N. Kwak, X. Zhao, L. Zhou, S. Anderson, V. V. Frolov, Y. Kubota, S. J. Lee, R. Mahapatra, J. J. O'Neill, R. Poling, T. Riehle, A. Smith, M. S. Alam, S. B. Athar, A. H. Mahmood, S. Timm, F. Wappler, A. Anastassov, J. E. Duboscq, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, H. Kagan, R. Kass, J. Lorenc, H. Schwarthoff, E. von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, A. Undrus, M. Bishai, S. Chen, J. Fast, J. W. Hinson, J. Lee, N. Menon, D. H. Miller, E. I. Shibata, I. P. J. Shipsey, S. Glenn, Y. Kwon, A. L. Lyon, E. H. Thorndike, C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, V. Savinov, D. Ugolini, X. Zhou, T. E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, T. Wlodek, M. Artuso, R. Ayad, E. Dambasuren, S. Kopp, G. Majumder, G. C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, A. Titov, G. Viehhauser, J. C. Wang, S. E. Csorna, K. W. McLean, S. Marka, Z. Xu, R. Godang, K. Kinoshita, I. C. Lai, P. Pomianowski, S. Schrenk, G. Bonvicini, D. Cinabro, R. Greene, L. P. Perera, G. J. Zhou, S. Chan, G. Eigen, E. Lipeles, M. Schmidtler, A. Shapiro, W. M. Sun, J. Urheim, A. J. Weinstein, F. Würthwein, D. E. Jaffe, G. Masek, H. P. Paar, E. M. Potter, S. Prell, V. Sharma, D. M. Asner, A. Eppich, J. Gronberg, T. S. Hill, D. J. Lange, R. J. Morrison, H. N. Nelson, T. K. Nelson, J. D. Richman, D. Roberts, B. H. Behrens, W. T. Ford, A. Gritsan, H. Krieg, J. Roy, and J. G. Smith

Subjects
Physics, Meson, 010308 nuclear & particles physics, General Physics and Astronomy, 01 natural sciences, Sigma baryon, Nuclear physics, Baryon, Charmed baryons, Particle decay, Crystallography, Pion, Isospin, 0103 physical sciences, Cornell Electron Storage Ring, 010306 general physics
Abstract

Using 13.7 fb(-1) of data recorded by the CLEO detector at Cornell Electron Storage Ring, we report evidence of two new charmed baryons: one decaying into Xi(0')(c)pi(+) with the subsequent decay Xi(0')(c)-->Xi(0)(c)gamma, and its isospin partner decaying into Xi(+')(c)pi(-) followed by Xi(+')(c)-->Xi(+)(c)gamma. We measure the following mass differences for the two states: M(Xi(0)(c)gammapi(+))-M(Xi(0)(c)) = 318.2+/-1.3+/-2.9 MeV and M(Xi(+)(c)gammapi(-))-M(Xi(+)(c)) = 324.0+/-1.3+/-3.0 MeV. We interpret these new states as the J(P) = 1 / 2(-) Xi(c1) particles, the charmed-strange analogs of the Lambda(+)(c1)(2593).

Published
1999

57. First Observation of the DecayB0→D*+D*−

Author

D. E. Jaffe, A. Wolf, R. Godang, T. S. Hill, T. Lee, M. Schmidtler, R. Ehrlich, H. Marsiske, N. Kwak, M. Bishai, C. Ward, L. K. Gibbons, T. Bergfeld, J. J. O'Neill, Sacha E Kopp, M. S. Alam, J. Gronberg, V. Fadeyev, S.C. Timm, C. Bebek, S. von Dombrowski, T. E. Coan, A. J. Weinstein, S. B. Athar, Z. Ling, A. D. Foland, B. Valant-Spaight, Tomasz Skwarnicki, R. Mountain, D. L. Hartill, H. N. Nelson, C.Y. Prescott, T. Wlodek, Xingjiang Zhou, R. Ammar, Jungil Lee, Dj Lange, H. Krieg, R. Poling, Y. J. Kwon, I. C. Lai, T. Hart, S. J. Richichi, T. K. Nelson, Ian Shipsey, E. M. Potter, W. T. Ford, S. Chan, C. R. Ng, Philip Baringer, A. I. Rubiera, R. D. Kass, H. P. Paar, G. E. Gladding, D. Riley, M. Dickson, A. H. Mahmood, M. A. Marsh, J. Roy, N. Menon, Jianqiao Ye, P. I. Hopman, L. P. Perera, M. M. Zoeller, D. G. Cassel, D. Roberts, E. Dambasuren, Jing Wang, S. Schuh, A. Shapiro, B. H. Behrens, M. Ogg, J. Lorenc, W. M. Sun, Ryszard Stroynowski, J. Urheim, R. Davis, E. Nordberg, D. Y.J. Kim, Richard L. Greene, M.A. Palmer, T. Riehle, V. Savinov, I. Narsky, H. Tajima, P. S. Drell, E. H. Thorndike, D. H. Miller, J. J. Thaler, K. M. Ecklund, P. Skubic, A. L. Lyon, D. Z. Besson, P. Gaidarev, Sheldon Stone, J. Fast, H. Yamamoto, H. Schwarthoff, J. S. Miller, G. C. Moneti, Paul Avery, G. J. Zhou, I. Karliner, D. Coppage, K. Lingel, Alice Bean, J. L. Rodriguez, G. Bonvicini, J. P. Alexander, Y. S. Gao, E. I. Shibata, M. Lohner, K. K. Gan, Frank Würthwein, D. Ugolini, V. Boisvert, A. Eppich, G. Viehhauser, B. I. Eisenstein, Yurii Maravin, S. W. Gray, D. L. Kreinick, Marina Artuso, M. L. Perl, S. E. Csorna, N. B. Mistry, E. Johnson, J. Ernst, K. Honscheid, R. M. Hans, T. E. Browder, C. M. Korte, Yuichi Kubota, S. Roberts, K. Kinoshita, G. W. Brandenburg, D. Cinabro, J. E. Duboscq, K. W. Edwards, S. Glenn, S. Kotov, Shuai Chen, A. Anastassov, I. Korolkov, Richard Wilson, A. Gritsan, G. Masek, R. Baker, S. Schrenk, Andreas Warburton, Yanwen Liu, J. G. Smith, C. P. Jessop, B. K. Heltsley, B. Gittelman, R. Janicek, E. Lipeles, S. J. Lee, J. Zheng, G. D. Gollin, S. Prell, A. Ershov, Juliet Ritchie Patterson, R. A. Briere, P. Pomianowski, Vivek Sharma, A. Smith, L. Zhou, Ilya Kravchenko, B. E. Berger, C. D. Jones, J. W. Hinson, N. Katayama, Alain Bellerive, J. Kandaswamy, Horst Severini, G. Eigen, D. M. Asner, Y. Li, C. Gwon, P. M. Patel, M. Athanas, D. Peterson, K. W. McLean, A. Soffer, Z. Xu, S. Anderson, Sz Márka, D. S. Crowcroft, A. Undrus, F. R. Wappler, Karl Berkelman, H. Kagan, R. J. Morrison, Mats A Selen, A. J. Sadoff, A. Titov, John Yelton, and R. Mahapatra

Subjects
Physics, Particle physics, Particle decay, Crystallography, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 0103 physical sciences, General Physics and Astronomy, CP violation, B meson, 010306 general physics, 01 natural sciences
Abstract

We have observed four fully reconstructed B{sup 0}{r_arrow}D{sup {asterisk}+}D{sup {asterisk}{minus}} candidates in 5.8{times}10{sup 6} {Upsilon}(4S){r_arrow}B{ovr B} decays recorded with the CLEO detector. The background is estimated to be 0.31{plus_minus}0.10 thinspthinspevents. The probability that the background could produce four or more signal candidates with the observed distribution among D{sup {asterisk}+} and D{sup {asterisk}{minus}} decay modes is 1.1{times}10{sup {minus}4} . The measured decay rate, B(B{sup 0}{r_arrow}D{sup {asterisk}+}D{sup {asterisk} {minus}})=[6.2{sup +4.0}{sub {minus}2.9}( stat){plus_minus}1.0(syst) ]{times}10{sup {minus}4} , is large enough for this decay mode to be of interest for the measurement of a time-dependent CP asymmetry. {copyright} {ital 1999} {ital The American Physical Society}

Published
1999

58. Saving Lives and Money with Robotic Trenching and Pipe Installation

Author

Steven J. Lorenc, Junbok Lee, and Leonhard E. Bernold

Subjects
Engineering, Backhoe loader, business.industry, Mechanical Engineering, Aerospace Engineering, Excavation, Robotics, Civil engineering, Training (civil), law.invention, Excavator, Hazardous waste, law, Joystick, Trench, Forensic engineering, General Materials Science, Artificial intelligence, business, Civil and Structural Engineering
Abstract

Excavation, and in particular trenching and pipe laying, represent a hazardous working environment for humans. Many hazards exist, including trench walls that can collapse, heavy objects that can be accidentally dropped into the opening, and buried utilities (e.g., power lines) that are damaged during the operation. Workplace safety has become a major concern in the construction industry over the past few decades. The main accident prevention efforts used for trench excavation and pipe installation today are the use of the trench box, appropriate sloping of trench walls, and the training of site personnel. The Construction Automation and Robotics Laboratory at North Carolina State University has developed an alternative that is using advanced technology, the prototype robotic excavation and pipe installation system. The major mechanical components are a backhoe excavator and a pipe manipulator attachment. Joystick control of hydraulic actuators, data acquisition/processing, CAD interface, and automatic as...

Published
1999

59. Observation of Two Narrow States Decaying intoΞc+γandΞc0γ

Author

D. S. Crowcroft, B. K. Heltsley, E. Lipeles, S. J. Lee, G. D. Gollin, D. L. Hartill, J. Zheng, H. Krieg, Karl Berkelman, C. R. Ng, F. R. Wappler, Z. Ling, K. K. Gan, Jongmin Lee, J. S. Miller, H. Marsiske, A. Anastassov, S. Schuh, V. Savinov, Y. S. Gao, Y. J. Kwon, S. Glenn, Sai-Juan Chen, Richard L. Greene, E. H. Thorndike, A. Titov, John Yelton, R. Mahapatra, D. Z. Besson, G. Masek, H. Kagan, D. Riley, V. Fadeyev, Juliet Ritchie Patterson, A. H. Mahmood, C. P. Ward, Vivek Sharma, R. A. Briere, D. Y.J. Kim, Alice Bean, Yang Li, P. Pomianowski, R. J. Morrison, Mats A Selen, D. Coppage, G. Bonvicini, J. P. Alexander, D. E. Jaffe, T. S. Hill, D. L. Kreinick, Z. Xu, M. Athanas, A. J. Sadoff, R. Ehrlich, Erik A. Johnson, B. Valant-Spaight, S. von Dombrowski, G. C. Moneti, T. E. Coan, Sz Márka, V. Boisvert, A. Eppich, T. E. Browder, Sacha E Kopp, L. Zhou, Ilya Kravchenko, J. J. Thaler, J. Kandaswamy, C. D. Jones, M. S. Alam, J. W. Hinson, A. J. Weinstein, Horst Severini, J. A. Ernst, T. Hart, E. I. Shibata, Tomasz Skwarnicki, M.A. Palmer, K. Honscheid, R. J. Wilson, C.Y. Prescott, D. Peterson, T. Riehle, S. B. Anderson, R. M. Hans, A. D. Foland, M. L. Perl, H. N. Nelson, C. Bebek, J. Gronberg, K. W. McLean, Sheldon Stone, S. J. Richichi, Yuichi Kubota, Xingjiang Zhou, S.C. Timm, A. Wolf, H. Schwarthoff, Paul Avery, D. Ugolini, J. Roy, G. E. Gladding, W. M. Sun, S. W. Gray, N. Kwak, R. Janicek, Alexander Ershov, James E. Fast, J. E. Duboscq, K. W. Edwards, Ian Shipsey, Jianqiao Ye, A. Gritsan, Dj Lange, Philip Baringer, M. Bishai, M. Ogg, M. Dickson, H. Yamamoto, K. M. Ecklund, G. J. Zhou, Ryszard Stroynowski, Andreas Warburton, S. Schrenk, Yanwen Liu, J. G. Smith, C. P. Jessop, E. M. Potter, S. Prell, A. L. Lyon, S. Kotov, L. P. Perera, P. I. Hopman, R. Ammar, J. Lorenc, N. Menon, H. P. Paar, T. Wlodek, I. C. Lai, S. Chan, S. Roberts, I. Narsky, A. Shapiro, J. L. Rodriguez, G. Eigen, R. Davis, P. Skubic, B. E. Berger, D. Roberts, M. A. Marsh, S. B. Athar, E. Nordberg, Frank Würthwein, G. Viehhauser, Alain Bellerive, J. Urheim, I. Korolkov, E. Dambasuren, N. B. Mistry, Marina Artuso, D. M. Asner, C. Gwon, P. M. Patel, R. Baker, Jing Wang, L. K. Gibbons, Alexander Undrus, D. H. Miller, A. Soffer, P. Gaidarev, T. Bergfeld, S. E. Csorna, B. H. Behrens, W. T. Ford, A. I. Rubiera, K. Kinoshita, R. D. Kass, G. W. Brandenburg, T. K. Nelson, Yurii Maravin, A. M. Smith, M. M. Zoeller, R. Godang, T. Lee, M. Schmidtler, R. Mountain, M. Lohner, D. G. Cassel, J. J. O'Neill, R. Poling, P. S. Drell, I. Karliner, B. I. Eisenstein, K. Lingel, D. Cinabro, and B. Gittelman

Subjects
Physics, Particle decay, Crystallography, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, Fragmentation function, General Physics and Astronomy, Cornell Electron Storage Ring, 010306 general physics, 01 natural sciences, Sigma baryon
Abstract

We report the first observation of two narrow charmed strange baryons decaying to {Xi}{sup +}{sub c}{gamma} and {Xi}{sup 0}{sub c}{gamma} , respectively, using data from the CLEO II detector at the Cornell Electron Storage Ring. We interpret the observed signals as the {Xi}{sup +{prime}}{sub c}thinsp( c{l_brace}su{r_brace}) and {Xi}{sup 0{prime}}{sub c}thinsp( c{l_brace}sd{r_brace}) , the symmetric partners of the well-established antisymmetric {Xi}{sup +}{sub c}thinsp(c[ su]) and {Xi}{sup 0}{sub c}thinsp(c[ sd]) . The mass differences M({Xi}{sup +{prime}}{sub c}){minus}M( {Xi}{sup +}{sub c}) and M({Xi}{sup 0{prime}}{sub c}){minus}M( {Xi}{sup 0}{sub c}) have been measured to be 107.8{plus_minus}1.7{plus_minus}2.5 and 107.0{plus_minus}1.4{plus_minus}2.5 MeV /c{sup 2} , respectively. {copyright} {ital 1999} {ital The American Physical Society }

Published
1999

60. Absorption spectra of nitro derivatives. 2-alkylamino-4-nitropicolines and their N-oxides

Author

A. Puszko and J. Lorenc

Subjects
chemistry.chemical_compound, Absorption spectroscopy, Chemistry, Organic Chemistry, Pyridine, Nitro, Substituent, Ring (chemistry), Photochemistry, Absorption (electromagnetic radiation), Spectral line, Excitation
Abstract

The UV spectra of 15 2-N-substituted 4-nitropicolines and their N-oxides in ethanol have been determined. The spectra of all investigated compounds with the exception of 2-alkylnitramino-4-nitropicolines contain three main bands: two absorption bands are attributed to π→π* excitation of the π-electron of the aromatic system. The third ICT in the longest wavelength region is assigned to the 4-nitro group via the pyridine ring. The bands in the spectra of 3-methyl derivatives are characterized by smaller intensity than 5-methyl derivatives due to the disturbance of the mutual electronic interaction of the substituent by the stericortho effect.

Published
1998

61. The DAQ system for CLEO III

Author

D. Coppage, C. Gwon, F. Würthwein, K. Honscheid, V. Fadejev, T. Noor, C. Strohman, A. Weinstein, Alice Bean, J. Lorenc, A. Wolf, J. Staeck, C. Darling, E. Lipeles, A. Shapiro, B. Forrest, R. Wanke, and I. Volobouev

Subjects
business.industry, Event (computing), Computer science, Interface (computing), PowerPC, General Physics and Astronomy, computer.software_genre, Software, Upgrade, Data acquisition, Backplane, Hardware and Architecture, Operating system, business, computer, Computer hardware, VMEbus
Abstract

In 1998 the CLEO detector collecting data at the CESR storage ring will be upgraded. A new Data Acquisition system will be installed during the upgrade to record triggers up to 1000 Hz with a mean data size of 25 KBytes per event. In this largely improved system, we will exploit the new CBLT VME transfer mode (defined by VIPA) to readout crates with about 15 9U digitization cards. Secondly, we decided to design and build a FASTBUS-VME interface card with the dimension of a FASTBUS card, and a 2-slot VME backplane inside. With this interface, all hardware and software will be homogeneous at this point of the DAQ data pipeline. It will also perform additional sparsification and channel tagging “on the fly”. This new system will be monitored and controlled by a networked system of CPUs. To achieve a dynamical and simple connection method between the various processes we chose the CORBA standard communication method. The port to PowerPC based VME boards was done in close collaboration with Visigenic Corp.

Published
1998

63. On-Line Assistance for Crane Operators

Author

Leonhard E. Bernold, Erick Luces, and Steven J. Lorenc

Subjects
Truck, Engineering, Warning system, business.industry, Civil engineering, Boom, Computer Science Applications, Construction site safety, Aeronautics, Overhead (business), Safety engineering, Bridge maintenance, Turret, business, Civil and Structural Engineering
Abstract

Safety is considered to be the most critical issue in the success of any lift operation. However, crane accidents involving tragic deaths of innocent people and destruction of property do occur. The number of accidents has decreased, only after the implementation of strict regulations by the Occupational Safety and Health Administration (OSHA). Repeated boom failure accidents of truck cranes used by the Bridge Maintenance Unit from the North Carolina Department of Transportation (NC DOT) triggered the research study described in this paper. Throughout the summer of 1994, the Bridge Maintenance Division of NC DOT recorded four accidents involving serious damage to their fleet of 64 National Series 446A truck mounted hydraulic cranes. The accidents involved bending of telescopic booms as well as turret drive gear failures. The repair of a bent boom alone can cost up to $16,000 in replacement parts, without considering all the costs of labor and overhead. The main objective of this research project was to develop and test an intelligent monitoring system that could be used to retrofit existing crane hardware. It was shown how a set of sensors and special devices were built and electronically integrated using an analog/digital converter and a laptop computer. Experimental work with a fully operational crane provided the necessary data to build a feature-based state identification system. Using a set of data collected during the experiments the paper demonstrates how sensory patterns can be recognized that lead to the identification of dangerous states.

Published
1997

64. Intelligent Technology for Truck Crane Accident Prevention

Author

Leonhard E. Bernold, Erik Luces, and Steven J. Lorenc

Subjects
Truck, Black box (phreaking), Engineering, Supervisor, business.industry, Strategy and Management, Crew, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Building and Construction, Boom, Construction site safety, Aeronautics, Industrial relations, Turret, Danger zone, business, Simulation, Civil and Structural Engineering
Abstract

Sideand shock-loading of cranes can cause boom and turret drive gear failures with fatal results. However, traditional overload systems do not protect against these types of critical loading conditions, and crane capacity charts only consider the normal loading case, vertical lifts. In the maintenance of bridges, crane operators in any state department of transportation are presented with situations in which they have to pull debris and entire trees that are lodged against bridges. Dragging and shock-loading are commonplace. Researchers from the Construction Automation and Robotics Laboratory at North Carolina State University have developed an innovative crane monitoring system capable of warning an operator who enters a danger zone and storing information about critical events on an electronic device. Acting like a black box on an airplane, the storage device allows this information to be downloaded by a supervisor in order to assess how a particular crew “worked” the crane. This paper presents the resu...

Published
1997

65. The role of hydrogen bonds in the crystals of 2-amino-4-methyl-5-nitropyridinium trifluoroacetate monohydrate and 4-hydroxybenzenesulfonate - X-ray and spectroscopic studies

Author

Lucyna Dymińska, M. Wandas, W. Sąsiadek, E. Kucharska, J. Lorenc, Tadeusz Lis, Jerzy Hanuza, Iwona Bryndal, and Mariusz K. Marchewka

Subjects
Models, Molecular, Chemistry, Hydrogen bond, Inorganic chemistry, Benzenesulfonates, Stacking, X-ray, Aminopyridines, Hydrogen Bonding, Crystallography, X-Ray, Spectrum Analysis, Raman, Methylation, Atomic and Molecular Physics, and Optics, Analytical Chemistry, Crystal, Crystallography, Spectroscopy, Fourier Transform Infrared, Molecule, Trifluoroacetic Acid, Instrumentation, Single crystal, Spectroscopy, Vibrational spectra
Abstract

Two new organic-organic salts, 2-amino-4-methyl-5-nitropyridinium trifluoroacetate monohydrate (AMNP-TFA), and 2-amino-4-methyl-5-nitropyridinium 4-hydroxybenzenesulfonate (AMNP-HBS), were obtained and characterized by means of FT-IR, FT-Raman and single crystal X-ray crystallography. In the former crystal, the cations, anions and water molecules are linked into layers by three types of hydrogen bonds, NPH⋯O, NAH⋯O and OH⋯O. These layers are connected by weaker CH⋯O hydrogen bonds. In the latter crystal, the cations and anions form one-dimensional structure through a number of hydrogen-bonding interactions involving the OH, NH(+) and NH2 groups as donors. In this case the NPH⋯O and NAH⋯O hydrogen bonds are formed. The combination of interactions between cations and anions results in the formation of columns. Additionally, there are π-π stacking interactions between the columns. The obtained X-ray structural data are related to the vibrational spectra of the studied crystals.

Published
2013

66. Comprehensive physicochemical studies of a new hybrid material: 2-amino-4-methyl-3-nitropyridinium hydrogen oxalate

Author

M. Wandas, E. Kucharska, J. Lorenc, Mirosław Mączka, Mariusz K. Marchewka, Krzysztof Hermanowicz, Tadeusz Lis, Jerzy Hanuza, and Iwona Bryndal

Subjects
Models, Molecular, Hydrogen, Inorganic chemistry, chemistry.chemical_element, Pyridinium Compounds, Crystal structure, Crystallography, X-Ray, Spectrum Analysis, Raman, Vibration, Oxalate, Analytical Chemistry, chemistry.chemical_compound, symbols.namesake, X-Ray Diffraction, Spectroscopy, Fourier Transform Infrared, Instrumentation, Spectroscopy, Oxalates, Calorimetry, Differential Scanning, Hydrogen bond, Hydrogen Bonding, Atomic and Molecular Physics, and Optics, Crystallography, chemistry, Deuterium, symbols, Quantum Theory, Hybrid material, Raman spectroscopy, Crystallization, Single crystal
Abstract

A new organic-organic salt, 2-amino-4-methyl-3-nitropyridinium hydrogen oxalate (AMNPO), and its deuterium analogue have been synthesized and characterized by means of FT-IR, FT-Raman, DSC and single crystal X-ray studies. The DSC measurements and temperature dependence of the IR and Raman spectra in the range 4-295 K show that it undergoes a reversible phase transition at ~240 K. At room temperature it crystallizes in noncentrosymmetric space group P21. The unit-cell is built of the 2-amino-4-methyl-3-nitropyridinium cations and oxalate monoanions which are connected via the N-H···O and O-H···O hydrogen bonds. The geometrical and hydrogen bond parameters are similar for non-deuterated (at 120 and 293 K) and deuterated compounds (at 90K). The phase transition is probably a consequence of order-disorder transition inside of hydrogen network. The 6-311G(2d,2p) basis set with B3LYP functional have been used to discuss the structure and vibrational spectra of the studied compound.

Published
2013

67. Fractal structure in base-catalyzed silica aerogels examined by TEM, SAXS and porosimetry

Author

N. Lisitsa, Yu. I. Aristov, Andrzej B. Jarzębski, J. Lorenc, and V. I. Zaikovski

Subjects
Pore size, chemistry.chemical_classification, Base (chemistry), Small-angle X-ray scattering, Chemistry, Mineralogy, Porosimetry, Fractal analysis, Fractal dimension, Catalysis, Fractal, Chemical engineering, Physical and Theoretical Chemistry
Abstract

A fractal analysis of three base catalyzed silica aerogels was performed using different experimental techniques: image analysis of electron micrographs, SAXS and study of pore size distribution determined from nitrogen adsorption isotherms. The aerogels appeared to exhibit self-similar properties over the range from 3–10 to 50–130 nm. The values of mass fractal dimension varied from 1.75 to 2.05 depending on the reactants concentration (TEOS, H2O) and were found to be similar irrespective of the method applied.

Published
1996

68. A model of linear chain submonolayer structures: application to and

Author

F. Bagehorn, Cz. Oleksy, and J. Lorenc

Subjects
Materials science, Lattice (order), Materials Chemistry, Thermodynamics, Thermal stability, Model parameters, Surfaces and Interfaces, Condensed Matter Physics, Surfaces, Coatings and Films, Phase diagram
Abstract

We propose a lattice gas model to account for linear chain structures adsorbed on (112) faces of W and Mo. The model includes a dipole-dipole interaction as well as a long-ranged indirect interaction. We have explicitly demonstrated that the periodic ground states depend on a competition between dipole-dipole and indirect interaction. The effect of temperature is studied within the molecular-field approximation. The numerical results show that for dipole-dipole interaction only, all long periodic linear chain phases are suppressed to low temperatures. However, when the long-range indirect interaction becomes important, the long-periodic linear chain phases start to fill up the phase diagram and develop a high thermal stability. Model parameters are chosen to reconstruct a sequence of long-periodic phases as observed experimentally for Li/Mo(112) and Li/W(112).

Published
1996

69. The Cherenkov correlated timing detector: beam test results from quartz and acrylic bars

Author

Mats A Selen, T. Bergfeld, K. Honscheid, C. Lu, G. S. Varner, K. Ueno, G. Rudnick, S. Hayashi, H. Yamaguchi, A. Kimura, Y. Sugaya, V. Boyer, M.A. Palmer, S. Kanda, M. Asai, C. R. Mindas, Koji Yoshimura, N. Tamura, J. Bialek, J. Lorenc, Daniel Robert Marlow, E.J. Prebys, Stephen L. Olsen, Y. Yoshimura, T. Auran, and H. Kichimi

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, business.industry, Bar (music), Astrophysics::High Energy Astrophysical Phenomena, Resolution (electron density), Detector, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Optics, Test beam, Physics::Accelerator Physics, High Energy Physics::Experiment, business, Instrumentation, Quartz, Cherenkov radiation, Beam (structure)
Abstract

Several prototypes of a Cherenkov Correlated Timing (CCT) Detector have been tested at the KEK-PS test beam line. We describe the results for Cherenkov light yields and timing characteristics from quartz and acrylic bar prototypes. A Cherenkov angle resolution is found to be 15 mrad at a propagation distance of 100 cm with a 2 cm thick quartz bar prototype., Presented at the RICH95 workshop, Uppsala, Sweden, June/95. H. Kichimi corresponding author. 5 pages with 9 figures. LaTex source files and postscript figures compressed and uuencoded below

Published
1996

70. Application of instantaneous invariants to the path tracking control problem of planar two degree-of-freedom systems: A singularity-free mapping of trajectory geometry

Author

S. J. Lorenc, A.S. Hall, and M. M. Stanišić

Subjects
Mechanical Engineering, Path tracking, Bioengineering, Geometry, Kinematics, Topology, Curvature, Computer Science Applications, Singularity, Planar, Mechanics of Materials, Trajectory, Control (linguistics), Differential (mathematics), Mathematics
Abstract

This paper presents a generalized form of planar two degree-of-freedom Curvature Theory, and applies the results to the synthesis of planar two degree-of-freedom motions. In specific, the kinematic control problem of planar path tracking systems is addressed. The theory yields a new mapping of first- and second-order differential geometric properties from the system's two-dimensional output-space (work-space) to the system's two-dimensional control-space (i.e. joint-space). This mapping is shown to be free from any kinematic singularities.

Published
1995

71. Molecular and crystal structures, vibrational studies and quantum chemical calculations of 3 and 5-nitroderivatives of 2-amino-4-methylpyridine

Author

Jerzy Hanuza, Tadeusz Lis, M. Wandas, E. Kucharska, W. Sąsiadek, J. Lorenc, and Iwona Bryndal

Subjects
Models, Molecular, Spectrophotometry, Infrared, Pyridines, Molecular Conformation, Crystal structure, Triclinic crystal system, Crystallography, X-Ray, Spectrum Analysis, Raman, Vibration, Spectral line, Analytical Chemistry, chemistry.chemical_compound, symbols.namesake, Instrumentation, Spectroscopy, Hydrogen bond, Hydrogen Bonding, Atomic and Molecular Physics, and Optics, Crystallography, Monomer, chemistry, 4-Methylpyridine, Picolines, symbols, Quantum Theory, Raman spectroscopy, Dimerization, Monoclinic crystal system
Abstract

The crystal structures of 2-amino-4-methyl-3-nitropyridine (I), 2-amino-4-methyl-3,5-dinitropyridine (II) and 2-amino-4-methyl-5-nitropyridine (III) have been determined. The compounds crystallize in the monoclinic P2(1)/n, triclinic P-1 and monoclinic C2/c space groups, respectively. These structures are stabilized by a combination of N-H···N and N-H···O hydrogen bonds and exhibit layered arrangement with a dimeric N-H···N motif in which the molecular units are related by inversion centre. The molecular structures of the studied compounds have been determined using the DFT B3LYP/6-311G(2d,2p) approach and compared to those derived from X-ray studies. The IR and Raman wavenumbers have been calculated from the optimized geometry of monomers and dimers formed in the unit cell and compared to the experimental values obtained from the spectra.

Published
2012

73. [Assessment of the incidence of metabolic syndrome]

Author

D, Horáková, L, Cízek, J, Koutná, F, Beska, J, Lorenc, and V, Janout

Subjects
Adult, Male, Metabolic Syndrome, Risk Factors, Incidence, Prevalence, Humans, Mass Screening, Female, Middle Aged, Aged, Czech Republic
Abstract

Metabolic syndrome represents a disease with high prevalence and influence on the cardiovascular morbidity and mortality. The aim of this study is to estimate frequency of metabolic syndrome in the district Sumperk, in years 1979-1981 based on the analysis of large Preventive check-ups database.Database of Preventive oncologic check-ups from Sumperk district comprising 40 099 subjects with follow up in years 1979-1981 has been used to assess the metabolic syndrome prevalence. Incidence of the risk factors of the metabolic syndrome have been calculated and compared with current situation in the Czech Republic. The estimated incidence of metabolic syndrome ranged from 2.2% to 8.4%, according to the selected criteria. As risk factors diabetes type II or glycaemia higher than 6.1 mmol/l, systolic or diastolic hypertension and BMI higher than 30.0 kg/m2 were considered. It has been found that metabolic syndrome is increasing with increasing age in both male and female population.It is possible to assume, based on the results of this study that the incidence of the metabolic syndrome is increasing in the last decades. It is necessary to focus our attention on the simple and practical methods for early detection of metabolic syndrome. Important is also the prevention because metabolic syndrome plays important role as a predictor of serious cardiovascular and metabolic diseases.

Published
2005

74. [Risk factors for tumors, cardiovascular and metabolic diseases in the population of the Sumperk District]

Author

L, Máchová, V, Janout, L, Cízek, F, Beska, J, Lorenc, and J, Koutná

Subjects
Adult, Male, Hypercholesterolemia, Smoking, Middle Aged, Metabolic Diseases, Cardiovascular Diseases, Hyperglycemia, Neoplasms, Hypertension, Prevalence, Humans, Female, Obesity, Aged, Czech Republic
Abstract

Cardiovascular diseases and cancers are responsible for almost 80% of the total mortality in the Czech Republic. For their prevention, identification of risk factors becomes indispensable. Presented article analyses frequency of risk factors in the population of Sumperk district on the bases of the first and second preventive oncological check-ups.Diagnoses have been unified according to the International Classification of Diseases. For data analysis SPSS statistical software has been used. Frequency of obesity, hypertension, hyperglycemia, hypercholesterolemia, hyperuricemia and smoking has been assessed in subjects during their first and second preventive check-ups. In the course of the first check-up 49,426 subjects have been examined, out of them 22,857 males (46.2%) and 26,569 females (53.8%). 40,386 subjects participated in the second check-up (18,378 males and 22,008 females). The assessment of the frequency of the individual risk factors has been done on the bases of the examination results.Total incidence of obesity was lower in males comparing to the data from the population of 6 districts of the Czech republic (MONICA). Due to the treatment of subjects, there was a mild decrease of prevalence of the systolic hypertension in the second check-up in comparison with the first one. In comparison with MONICA project, the incidence of hypertension was more than twice higher. No difference in frequency of hyperglycemia in males and females was found. In both genders, high prevalence of hypercholesterolemia (about 70%) was found. Between two check-ups, decrease of hypercholesterolemia prevalence was observed. It corresponds with the existing trend in the Czech population. Decrease of smoking prevalence has been observed in the second check-up mainly in males and less in females. In comparison with MONICA project, there was a higher smoking prevalence in males and a lower one in females.

Published
2004

75. Distributed objects in action-first experience with the CLEO III data acquisition system

Author

J. Lorenc, R. Baker, C. Strohman, A. Weinstein, K. Honscheid, V. Frolov, F.W. Wuerthwein, D. L. Kreinick, C. Bebek, D. Hufnagel, A. Wolf, H. Schwarthoff, C. Gwon, and Elliot David Lipeles

Subjects
Physics, Physics::Instrumentation and Detectors, Event (computing), Cherenkov detector, Emphasis (telecommunications), Real-time computing, Detector, Volume (computing), Distributed object, Particle identification, law.invention, Data acquisition, law, High Energy Physics::Experiment
Abstract

The CLEO III experiment-scheduled to begin data taking in August 1999-includes a 4 layer silicon vertex detector and a novel ring image Cherenkov detector to support particle identification. Drift chambers, EM calorimeters and muon chambers complete the detector assembly. Overall more than half a million electronic channels have to be read out and monitored. With trigger rates up to 1000 Hz the data volume to be handled by the DAQ system exceeds 30 MBytes/s. By the time of Realtime 99 most of the new components of the CLEO III detector will have been installed and the initial commissioning run for the DAQ and trigger system will be completed. We will present the architecture of the CLEO III DAQ system, but special emphasis will be placed on our experience with a large distributed system, with CORBA and Java as well as with objectivity as an event and constants database.

Published
2003

76. Multinuclear 1H, 13C and 15N NMR study of some substituted 2-amino-4-nitropyridines and their N-oxides

Author

A. Puszko, Katri Laihia, Erkki Kolehmainen, Reijo Kauppinen, and J. Lorenc

Subjects
Magnetic Resonance Spectroscopy, Chemistry, Nitrogen, Pyridines, Ultraviolet Rays, Chemical shift, Nuclear magnetic resonance spectroscopy, Atomic and Molecular Physics, and Optics, Carbon, Analytical Chemistry, Electronegativity, Oxygen, chemistry.chemical_compound, Crystallography, Models, Chemical, Computational chemistry, Pyridine, Nucleophilic substitution, Shielding effect, Reactivity (chemistry), Instrumentation, Spectroscopy, Methyl group
Abstract

1H, 13C and 15N NMR chemical shift assignments based on pulsed field gradient selected PFG 1H,X (X = 15C and 15N) HMQC and HMBC experiments are reported for three 4-nitropyridine N-oxides and four 4-nitropyridines. It was found that an ortho effect of a methyl group inhibits the deshielding effect of the 4-nitro group and that this effect and the so-called back donation is influenced by electronegativity and position of substituents in the multisubstituted pyridine N-oxides. The shielding effect of N-oxide group is most pronounced in the 15N NMR chemical shifts of the studied compounds. This effect is further modified by methylamino, methylnitramino, 5- or 3-methyl and 4-nitro groups. Among them the 4-nitro group exerts the highest influence on the shielding effect of the N-oxide functionality. Experimental 1H, 13C and 15N NMR chemical shifts and GIAO/DFT theoretical calculations are consistent with each other and supported by the reactivity on nucleophilic substitution, the UV spectral and the dipole moment data.

Published
2002

77. Bone turnover rate in postmenopausal women: bimodal distribution?

Author

J, Łukaszkiewicz, E, Karczmarewics, J, Marowska, M, Kóbylińska, K, Prószyńska, L, Bielecka, H, Matusik, P, Płudowski, K, Hoszowski, P, Korczyk, W, Tłustochowicz, and J, Lorenc

Subjects
Aged, 80 and over, Pilot Projects, Middle Aged, Alkaline Phosphatase, Bone and Bones, Collagen Type I, Postmenopause, Bone Density, Cluster Analysis, Humans, Female, Bone Remodeling, Collagen, Peptides, Aged
Abstract

There is considerable evidence that elevated bone turnover is an independent form of low bone mineral density (BMD) risk factor of osteoporotic fractures. The aim of our study was to test whether a group of postmenopausal women could be divided into subgroups of high and low bone turnover rate using different pairs of bone turnover markers (one resorption, one formation). Cluster analysis was used to obtain high and low bone turnover subgroups within the study group. A magnitude of difference in lumbar spine BMD (expressed as Z-score) between high- and low-turnover groups was used as a criterion of division success. According to this criterion, the division obtained with a urinary type I collagen crosslinked N-telopeptide/bone alkaline phosphatase pair of markers appeared to be the most significant. This method of separation of two subgroups was highly concordant with the division based on the upper thresholds of the normal values for those markers found for the premenopausal women. It seems that the observed existence of high-and low-turnover subject clusters is not an incidental phenomenon, because the effects obtained for the whole study group were further confirmed by the consistent results of cluster analysis, performed separately for two randomly selected subgroups (A and B) from the study group. The results obtained appear to support the view that bone turnover rate in postmenopausal women is distributed in the bimodal fashion. This finding seems to justify further investigations of more elaborated models, enabling clinicians to individually classify their patients as low- or high-turnover cases with higher efficiency, as in the case of cutoff values for single markers.

Published
2001

78. Measurement of the product branching fractionB(c→ΘcX)×B(Θc→ΛX)

Author

J. Urheim, T. O. Meyer, T. Hart, P. G. Thies, E. I. Shibata, D. E. Jaffe, I. Robertson, E. Johnson, G. Masek, J. Zheng, L. Ling, A. D. Foland, Juliet Ritchie Patterson, Richard L. Greene, K. K. Gan, T. Riehle, H. Kagan, J. J. Thaler, J. Gronberg, E. Dambasuren, N. Menon, H. Marsiske, D. Ugolini, E. H. Thorndike, N. Kwak, M. Bishai, S. W. Gray, H. P. Paar, S.C. Timm, X. J. Zhou, Horst Severini, L. K. Gibbons, V. V. Frolov, J. Williams, A. Ershov, G. C. Moneti, Jing Wang, G. Majumder, R. Davis, Y. Kwon, V. Savinov, Shuai Chen, A. Anastassov, Vivek Sharma, I. Korolkov, Philip Baringer, S. Schrenk, A. Smith, Yanwen Liu, J. G. Smith, C. P. Jessop, R. J. Morrison, V. Fadeyev, S. Prell, D. Z. Besson, Mats A Selen, F. Blanc, R. Ammar, A. J. Sadoff, R. Baker, D. L. Hartill, R. A. Briere, I. C. Lai, S. Chan, C. Plager, S. Anderson, H. Krieg, R. Poling, G. E. Gladding, C. R. Ng, P. Pomianowski, E. Nordberg, G. Bonvicini, J. P. Alexander, Dj Lange, Yurii Maravin, M. Lohner, S. Schuh, Ilya Kravchenko, M. A. Marsh, A. Shapiro, B. Valant-Spaight, R. M. Hans, F. R. Wappler, T. K. Nelson, J. W. Hinson, D. H. Miller, I. P.J. Shipsey, A. Titov, M.A. Palmer, Y. S. Gao, John Yelton, R. Mahapatra, K. M. Ecklund, M. M. Zoeller, Sacha E Kopp, M. S. Alam, A. L. Lyon, Andreas Warburton, C. Sedlack, J. Lorenc, G. J. Zhou, A. Wolf, H. Bull, J. Roy, L. P. Perera, W. M. Sun, D. Peterson, K. W. McLean, Jiejun Wu, P. Gaidarev, Yang Li, X. Zhao, T. S. Hill, P. Skubic, T. E. Coan, S. B. Athar, L. Jian, R. Stroynovvski, A. J. Weinstein, R. Ehrlich, Tomasz Skwarnicki, Karl Berkelman, M. Dickson, M. Saleem, H. Yamamoto, A. H. Mahmood, S. J. Richichi, J. L. Rodriguez, Marina Artuso, I. Narsky, Frank Würthwein, G. Viehhauser, Z. Xu, B. K. Heltsley, N. B. Mistry, E. Lipeles, D. Y.J. Kim, Sz Márka, S. J. Lee, Alice Bean, A. Undrus, G. D. Gollin, D. L. Kreinick, P. Brabant, T. E. Browder, Jason Sang Hun Lee, K. Honscheid, V. Boisvert, C. D. Jones, A. Eppich, J. E. Duboscq, Sheldon Stone, Paul Avery, B. E. Berger, R. Ayad, E. M. Potter, P. I. Hopman, W. T. Ford, A. I. Rubiera, R. D. Kass, G. Eigen, B. H. Behrens, S. Kotov, R. Janicek, S. E. Csorna, K. Kinoshita, G. W. Brandenburg, C. Bebek, D. Riley, J. D. Richman, T. Wlodek, S. Ahmed, D. G. Cassel, M. L. Perl, I. Karliner, R. P. Stutz, Yuichi Kubota, B. I. Eisenstein, K. W. Edwards, T. Bergfeld, R. Godang, T. Lee, M. Schmidtler, J. Fast, D. M. Asner, C. Gwon, P. M. Patel, H. Schwarthoff, J. G. Thayer, R. Mountain, C.Y. Prescott, Jianqiao Ye, Richard Wilson, A. Gritsan, D. Cinabro, B. Gittelman, J. Holliday, P. S. Drell, K. Lingel, J. Ernst, E. von Toerne, and J. J. O'Neill

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Charge (physics), 01 natural sciences, Charmed baryons, Product (mathematics), 0103 physical sciences, Content (measure theory), 010306 general physics, Conjugate
Abstract

Based on an a high statistics e+e- -> ccbar data sample, we report on the inclusive rate for charmed baryons to decay into / particles using charm-event tagging. We select e+e- -> ccbar events which have a clear anti-charm tag and measure the / content in the hemisphere opposite the tag (charge conjugate modes are implicit). This allows us to determine the product branching fraction: B(/)=B(c->Theta_c)*B(Theta_c->/\X), where Theta_c represents a sum over all charmed baryons produced in e+e- fragmentation at sqrt(s)=10.5 GeV, given our specific tags. We obtain B(/)=(1.87+/-0.03+/-0.33)%

Published
2000

79. Response of aorta connective tissue matrix to injury caused by vassopressin-induced hypertension or hypercholesterolemia

Author

J, Drobnik, R, Dabrowski, A, Szczepanowska, L, Giernat, and J, Lorenc

Subjects
Male, Cholesterol, Connective Tissue, Vasopressins, Hypercholesterolemia, Hypertension, Animals, Vasoconstrictor Agents, Aorta, Thoracic, Aorta, Abdominal, Collagen, Rabbits, Glycosaminoglycans
Abstract

The aim of the study was to investigate the effect of two various atherogenic stimuli (vasopressin-induced hypertension or hypercholesterolemia) on the collagen and glycosaminoglycan (GAG) content in the internal or external part of both thoracic and abdominal aorta, which are differently susceptible to atherosclerosis. Experimental rabbits were divided into four groups: controls, animals injected with physiological saline or vasopressin at the dose of 1 IU/kg from the 1 st to the 25 th day of experiment, respectively. The animals from group 4 were maintained on food, containing 0.25% cholesterol. Only in the vasopressin-treated group, the systolic blood pressure was elevated from 110 mmHg at the beginning, to 166 mmHg at the end of the study. After 14 weeks the aorta was dissected into internal and external parts. GAG fractions were separated and estimated as uronic acids. Collagen was evaluated as the hydroxyproline content in the tissue. Augmented total GAG and heparan sulphate (HS) level, plus no changes in the collagen content were seen in the internal part of the thoracic aorta in rabbits with hypercholesterolemia or hypertension. In the hypertensive animals, the changes were extended to the external part of the aorta and, additionally, comprised the elevation of the chondroitin-4 sulphate (C-4S) content. The two atherogenic stimuli increased the collagen level with no elevation of the GAG content in the abdominal aorta. A convergent effect of the injury, caused by hypertension or hypercholesterolemia on the collagen, total GAG and HS content was shown in the respective parts of the rabbit aortas. The common GAG, increased in the thoracic aorta, stand for the HS, in both hypertensive and hypercholesterolemic rabbits. As the sensitivity to atherosclerosis development in different segments of the aorta varies, they express various responses of the connective tissue matrix to injuries, caused by hypertension or hypercholesterolemia.

Published
2000

80. Measurements of charm fragmentation intoDs*+andDs+ine+e−annihilations ats=10.5 GeV

Author

Richard L. Greene, E. H. Thorndike, L. Ling, G. Bonvicini, J. P. Alexander, S. B. Anderson, R. M. Hans, Z. Xu, Sz Márka, D. L. Hartill, B. K. Heltsley, R. J. Wilson, Vipul Jain, Ryszard Stroynowski, J. J. Thaler, S. J. Lee, Ilya Korolkov, L. K. Gibbons, G. D. Gollin, R. Davis, J. G. Thayer, D. Cinabro, Andreas Warburton, S. Schuh, Gobinda Majumder, Yang Li, D. J. Lange, B. Gittelman, R. Ammar, E. von Toerne, D. E. Jaffe, T. S. Hill, G. J. Zhou, T. O. Meyer, J. Urheim, N. Kwak, M. Bishai, H. Yamamoto, R. Ehrlich, V. V. Frolov, J. Zheng, Elliot Lipeles, T. Wlodek, F. R. Wappler, Yurii Maravin, T. Hart, I. C. Lai, S. Chan, F. Blanc, G. E. Gladding, K. K. Gan, T. Skwarnicki, A. L. Lyon, E. Dambasuren, G. Masek, Juliet Ritchie Patterson, Werner Sun, A. Anastassov, J. Gronberg, D. Z. Besson, H. P. Paar, T. Riehle, J. A. Ernst, M. A. Marsh, R. Ayad, Jing Wang, D. G. Cassel, S. Prell, G. C. Moneti, K. M. Ecklund, John Yelton, R. Mahapatra, Vivek Sharma, I. Narsky, D. Peterson, Karl Berkelman, June Hyuk Lee, Veronique Boisvert, K. W. McLean, Jayashree Roy, X. J. Zhou, A. J.R. Weinstein, Horst Severini, M.A. Palmer, E. Nordberg, R. A. Briere, R. Poling, T. E. Coan, S. W. Gray, G. H. A. Viehhauser, Sacha E Kopp, M. S. Alam, D. L. Kreinick, H. Kagan, Sheldon Stone, D. H. Miller, Paul Avery, C. Bebek, S. J. Richichi, L. P. Perera, Y. S. Gao, B. H. Behrens, B. I. Eisenstein, P. G. Thies, A. Wolf, C. Plager, T. Bergfeld, R. Godang, T. Lee, M. Schmidtler, T. E. Browder, Alexander Ershov, C. Sedlack, S.C. Timm, W. T. Ford, S. Schrenk, R. J. Morrison, Mats A Selen, A. I. Rubiera, R. D. Kass, P. Gaidarev, J. Lorenc, J. L. Rodriguez, Yanwen Liu, J. G. Smith, H. Marsiske, E. I. Shibata, Frank Würthwein, D. Y.J. Kim, V. Savinov, C. P. Jessop, R. Baker, A. D. Foland, A. J. Sadoff, C.Y. Prescott, Jiejun Wu, S. B. Athar, James E. Fast, N. B. Mistry, P. Skubic, A. Titov, Jianqiao Ye, Y. J. Kwon, B. Valant-Spaight, Vitaliy Fadeyev, T. K. Nelson, Alexander Undrus, Philip Baringer, G. Eigen, A. M. Smith, L. Jian, H. Krieg, I. P. J. Shipsey, C. R. Ng, Erik A. Johnson, M. M. Zoeller, Ilya Kravchenko, C. D. Jones, J. W. Hinson, H. Schwarthoff, R. Janicek, A. H. Mahmood, E. M. Potter, Marina Artuso, P. I. Hopman, Andrei Gritsan, S. E. Csorna, M. Saleem, I. Karliner, K. Kinoshita, Alice Bean, G. W. Brandenburg, A. Eppich, A. Shapiro, K. Honscheid, N. Menon, J. E. Duboscq, K. W. Edwards, S. Kotov, S. Ahmed, B. E. Berger, D. Ugolini, Xiandong Zhao, D. Riley, M. L. Perl, Yuichi Kubota, D. M. Asner, C. Gwon, P. M. Patel, S. J. Chen, R. Mountain, M. Dickson, M. Lohner, J. J. O'Neill, P. S. Drell, and J. C. Williams

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, Fragmentation (computing), Charm (quantum number), 010306 general physics, 01 natural sciences
Published
2000

81. Update of the search for the neutrinoless decayτ→μγ

Author

H. P. Paar, Z. Xu, J. R. Patterson, S. Schrenk, Sacha E Kopp, M. S. Alam, Sz Márka, C. P. Jessop, S. Prell, Daniel P Cronin-Hennessy, F. Blanc, G. E. Gladding, A. Shapiro, C. Plager, A. H. Mahmood, A. Undrus, S. Anderson, E. Nordberg, N. Kwak, E. Dambasuren, N. Menon, R. Davis, J. Zheng, J. Gronberg, Jing Wang, G. Majumder, C. Bebek, S.C. Timm, K. M. Ecklund, T. O. Meyer, D. E. Jaffe, Xingjiang Zhou, R. A. Briere, R. Godang, A. Wolf, S. Ahmed, A. L. Lyon, K. Honscheid, D. H. Miller, Yurii Maravin, Dj Lange, E. von Toerne, J. J. Thaler, M. Dickson, T. K. Pedlar, J. J. O'Neill, A. J. Weinstein, S. Schuh, M.A. Palmer, Vivek Sharma, P. Gaidarev, Ilya Kravchenko, M. Schmidtler, T. Wlodek, C. D. Jones, A. Smith, J. W. Hinson, J. E. Duboscq, Shuai Chen, A. Anastassov, T. Hart, A. D. Foland, B. E. Berger, Tomasz Skwarnicki, F. R. Wappler, H. N. Nelson, S. J. Richichi, Y. Kwon, V. Savinov, S. B. Athar, D. L. Kreinick, I. Korolkov, D. Z. Besson, R. Baker, J. Urheim, E. H. Thorndike, Alice Bean, Jason Sang Hun Lee, L. P. Perera, T. Riehle, G. Masek, J. Williams, R. Mountain, T. E. Browder, V. Boisvert, G. Bonvicini, J. P. Alexander, Philip Baringer, A. Eppich, J. Fast, K. K. Gan, F. Würthwein, R. Ayad, G. J. Zhou, R. Ammar, H. Schwarthoff, D. Ugolini, E. M. Potter, S. W. Gray, P. I. Hopman, B. H. Behrens, I. C. Lai, X. Zhao, G. C. Moneti, W. T. Ford, D. G. Cassel, P. G. Thies, Y. S. Gao, A. I. Rubiera, R. D. Kass, John Yelton, R. Mahapatra, R. S. Galik, M. M. Zoeller, R. Janicek, M. A. Marsh, E. I. Shibata, L. K. Gibbons, James G. Smith, V. V. Frolov, P. S. Drell, M. Lohner, T. S. Hill, D. M. Asner, Horst Severini, C. Gwon, R. Ehrlich, S. E. Csorna, H. Kagan, R. M. Hans, T. E. Coan, K. W. Edwards, E. Johnson, Y. Li, P. M. Patel, J. Ernst, I. Narsky, J. G. Thayer, I. Karliner, J. L. Rodriguez, K. Kinoshita, B. K. Heltsley, T. Bergfeld, G. W. Brandenburg, D. Cinabro, E. Lipeles, S. J. Lee, Sheldon Stone, B. I. Eisenstein, B. Gittelman, G. D. Gollin, Andreas Warburton, C.Y. Prescott, Paul Avery, D. L. Hartill, R. J. Morrison, Mats A Selen, C. Sedlack, G. Eigen, R. Poling, Jianqiao Ye, J. Lorenc, A. J. Sadoff, V. Pavlunin, C. R. Ng, H. Marsiske, Richard Wilson, A. Gritsan, V. Fadeyev, H. Yamamoto, Jiejun Wu, B. Valant-Spaight, J. Roy, P. Skubic, W. M. Sun, Ryszard Stroynowski, D. Riley, M. L. Perl, Yuichi Kubota, L. Jian, Marina Artuso, Karl Berkelman, M. Saleem, I. P.J. Shipsey, D. Y.J. Kim, G. Viehhauser, N. B. Mistry, D. Peterson, K. W. McLean, L. Ling, and A. Ershov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Elementary particle, Fermion, 01 natural sciences, Lepton number, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract

We present an update of the search for the lepton family number violating decay {tau}{yields}{mu}{gamma} using 12.6 million {tau}{sup +}{tau}{sup -} pairs collected with the CLEO detector. No evidence of a signal has been found and the corresponding upper limit is B({tau}{yields}{mu}{gamma})

Published
2000

82. Resonant structure ofτ→3ππ0ντandτ→ωπντdecays

Author

D. M. Asner, Y. Li, C. Gwon, P. M. Patel, J. G. Thayer, D. Riley, Richard Wilson, A. Gritsan, Richard L. Greene, T. O. Meyer, M. L. Perl, E. H. Thorndike, H. Kagan, Yuichi Kubota, I. P.J. Shipsey, J. Zheng, K. K. Gan, A. Wolf, G. C. Moneti, C.Y. Prescott, Y. Kwon, V. Savinov, D. Z. Besson, S. Ahmed, Shuai Chen, A. Anastassov, I. Korolkov, R. Baker, Vivek Sharma, R. J. Morrison, Mats A Selen, A. Smith, X. Zhao, Jianqiao Ye, S. E. Csorna, G. Eigen, G. Bonvicini, J. P. Alexander, A. J. Sadoff, S. Schrenk, Yanwen Liu, P. G. Thies, D. Y.J. Kim, J. G. Smith, C. P. Jessop, W. T. Ford, S. Schuh, J. Roy, R. M. Hans, A. I. Rubiera, R. D. Kass, K. W. Edwards, D. Peterson, N. Kwak, H. Krieg, R. Poling, S. Prell, C. Bebek, W. M. Sun, Ryszard Stroynowski, M. Bishai, E. I. Shibata, K. W. McLean, T. Hart, C. R. Ng, Alice Bean, Jason Sang Hun Lee, C. D. Jones, S. B. Athar, V. Boisvert, A. Eppich, J. Williams, M.A. Palmer, K. Kinoshita, A. Titov, T. Riehle, T. Bergfeld, John Yelton, R. Mahapatra, R. Davis, Andreas Warburton, G. W. Brandenburg, E. Johnson, R. S. Galik, B. E. Berger, T. Wlodek, D. Ugolini, D. L. Hartill, Sheldon Stone, C. Plager, C. Sedlack, L. P. Perera, S. Anderson, T. K. Nelson, S. Kotov, S. W. Gray, V. Shelkov, Paul Avery, Philip Baringer, I. Narsky, R. Janicek, J. Fast, R. A. Briere, J. Lorenc, J. L. Rodriguez, H. Marsiske, H. Yamamoto, H. Schwarthoff, L. K. Gibbons, V. V. Frolov, P. Pomianowski, Frank Würthwein, M. M. Zoeller, Sacha E Kopp, Yurii Maravin, R. Ayad, M. S. Alam, G. Viehhauser, J. Urheim, Ilya Kravchenko, E. M. Potter, V. Fadeyev, F. R. Wappler, K. Honscheid, N. B. Mistry, M. Dickson, J. W. Hinson, P. I. Hopman, J. D. Richman, A. H. Mahmood, B. Valant-Spaight, J. E. Duboscq, Jiejun Wu, E. Dambasuren, Jing Wang, G. Majumder, N. Menon, L. Ling, Karl Berkelman, M. Saleem, T. S. Hill, A. Ershov, R. Ehrlich, P. Skubic, Z. Xu, D. H. Miller, Sz Márka, P. Gaidarev, A. Undrus, D. E. Jaffe, J. Gronberg, S.C. Timm, Y. S. Gao, Dj Lange, E. von Toerne, J. J. O'Neill, D. Cinabro, E. H. Behrens, B. Gittelman, P. S. Drell, K. Lingel, J. Ernst, L. Jian, Marina Artuso, F. Blanc, G. E. Gladding, K. M. Ecklund, A. L. Lyon, D. L. Kreinick, T. E. Browder, J. J. Thaler, B. K. Heltsley, E. Lipeles, S. J. Lee, G. D. Gollin, M. Lohner, R. Godang, T. Lee, M. Schmidtler, R. Mountain, G. J. Zhou, D. G. Cassel, H. P. Paar, A. Shapiro, E. Nordberg, T. E. Coan, A. J. Weinstein, I. Karliner, Tomasz Skwarnicki, S. J. Richichi, B. I. Eisenstein, R. Ammar, I. C. Lai, S. Chan, M. A. Marsh, G. Masek, Juliet Ritchie Patterson, X. J. Zhou, A. D. Poland, and Horst Severini

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Partial wave analysis, Resonance, State (functional analysis), 01 natural sciences, Omega, Pion, 0103 physical sciences, Spectral function, Cornell Electron Storage Ring, Atomic physics, 010306 general physics
Abstract

The resonant structure of the four pion final state in the decay {tau}{yields}3{pi}{pi}{sup 0}{nu}{sub {tau}} has been analyzed using 4.27 million {tau}{sup +}{tau}{sup -} pairs collected by the CLEO II experiment at the Cornell Electron Storage Ring. A partial wave analysis of the resonant structure of the {tau}{yields}3{pi}{pi}{sup 0}{nu}{sub {tau}} decay has been performed; the spectral decomposition of the four pion system is dominated by the {omega}{pi} and a{sub 1}{pi} final states. The mass and width of the {rho}{sup '} resonance have been extracted from a fit to the {tau}{yields}{omega}{pi}{nu}{sub {tau}} spectral function. We have searched for second class currents in the decay {tau}{yields}{omega}{pi}{nu}{sub {tau}} using spin-parity analysis and established an upper limit on the non-vector current contribution. (c) 2000 The American Physical Society.

Published
2000

84. Field Test Results of the Remotely Controlled Drilled Shaft Inspection System (DSIS)

Author

Leonhard E. Bernold, Michaela Yeager, and Steven J. Lorenc

Subjects
Engineering, business.industry, Foundation (engineering), Robotics, Field (computer science), Construction engineering, Bridge (nautical), Test (assessment), Work (electrical), Hazardous waste, Software deployment, Forensic engineering, Artificial intelligence, business
Abstract

Construction has many of the most hazardous work environments of any industry in the world. Despite this fact, robotics has received very little attention and is widely considered as unsuitable and cost-prohibitive. Many of the few attempts that have been made have failed for various reasons, one of which is the lack of a cross-disciplinary approach by the developers. This paper presents an effort to develop an innovative alternative to the present method used for inspecting drilled shafts needed for the construction of bridge supports. It describes the first prototype system including the inspection/testing capsule, the deployment system, and some field tests that were conducted. The goal is to eliminate the need for a foundation inspector to be lowered 100 to 200 feet into a narrow unsupported shaft. Additionally, it will allow for inspection of slurry or water filled holes, which are impossible to accurately inspect without pumping them empty. The success of the project depends heavily on a close working relationship of researchers from several disciplines such as civil-, mechanical-, and electrical engineering.

Published
2000

85. Structure functions in the decayτ∓→π∓π0π0ντ

Author

T. E. Browder, Y. Li, J. L. Rodriguez, H. Yamamoto, T. Bergfeld, B. I. Eisenstein, J. Ernst, G. E. Gladding, G. D. Gollin, R. M. Hans, E. Johnson, I. Karliner, M. A. Marsh, M. Palmer, C. Plager, C. Sedlack, M. Selen, J. J. Thaler, J. Williams, K. W. Edwards, R. Janicek, P. M. Patel, A. J. Sadoff, R. Ammar, P. Baringer, A. Bean, D. Besson, R. Davis, S. Kotov, I. Kravchenko, N. Kwak, X. Zhao, S. Anderson, V. V. Frolov, Y. Kubota, S. J. Lee, R. Mahapatra, J. J. O’Neill, R. Poling, T. Riehle, A. Smith, S. Ahmed, M. S. Alam, S. B. Athar, L. Jian, L. Ling, A. H. Mahmood, M. Saleem, S. Timm, F. Wappler, A. Anastassov, J. E. Duboscq, K. K. Gan, C. Gwon, T. Hart, K. Honscheid, H. Kagan, R. Kass, J. Lorenc, H. Schwarthoff, E. von Toerne, M. M. Zoeller, S. J. Richichi, H. Severini, P. Skubic, A. Undrus, M. Bishai, S. Chen, J. Fast, J. W. Hinson, J. Lee, N. Menon, D. H. Miller, E. I. Shibata, I. P. J. Shipsey, Y. Kwon, A. L. Lyon, E. H. Thorndike, C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, V. Savinov, D. Ugolini, X. Zhou, T. E. Coan, V. Fadeyev, I. Korolkov, Y. Maravin, I. Narsky, R. Stroynowski, J. Ye, T. Wlodek, M. Artuso, R. Ayad, E. Dambasuren, S. Kopp, G. Majumder, G. C. Moneti, R. Mountain, S. Schuh, T. Skwarnicki, S. Stone, A. Titov, G. Viehhauser, J. C. Wang, A. Wolf, J. Wu, S. E. Csorna, K. W. McLean, S. Marka, Z. Xu, R. Godang, K. Kinoshita, I. C. Lai, P. Pomianowski, S. Schrenk, G. Bonvicini, D. Cinabro, R. Greene, L. P. Perera, G. J. Zhou, S. Chan, G. Eigen, E. Lipeles, M. Schmidtler, A. Shapiro, W. M. Sun, J. Urheim, A. J. Weinstein, F. Würthwein, D. E. Jaffe, G. Masek, H. P. Paar, E. M. Potter, S. Prell, V. Sharma, D. M. Asner, A. Eppich, J. Gronberg, T. S. Hill, D. J. Lange, R. J. Morrison, T. K. Nelson, J. D. Richman, R. A. Briere, B. H. Behrens, W. T. Ford, A. Gritsan, H. Krieg, J. Roy, J. G. Smith, J. P. Alexander, R. Baker, C. Bebek, B. E. Berger, K. Berkelman, F. Blanc, V. Boisvert, D. G. Cassel, M. Dickson, P. S. Drell, K. M. Ecklund, R. Ehrlich, A. D. Foland, P. Gaidarev, R. S. Galik, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, P. I. Hopman, C. D. Jones, D. L. Kreinick, T. Lee, Y. Liu, T. O. Meyer, N. B. Mistry, C. R. Ng, E. Nordberg, J. R. Patterson, D. Peterson, D. Riley, J. G. Thayer, P. G. Thies, B. Valant-Spaight, A. Warburton, P. Avery, M. Lohner, C. Prescott, A. I. Rubiera, J. Yelton, J. Zheng, G. Brandenburg, A. Ershov, Y. S. Gao, D. Y.-J. Kim, and R. Wilson

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Scalar (mathematics), Dalitz plot, 01 natural sciences, Particle decay, Pion, 0103 physical sciences, High Energy Physics::Experiment, Cornell Electron Storage Ring, 010306 general physics, Pseudovector
Abstract

Using the CLEO II detector operating at the Cornell Electron Storage Ring (CESR) e{sup +}e{sup -} collider, we have measured the structure functions in the decay {tau}{sup {+-}}{yields}{pi}{sup {+-}}{pi}{sup 0}{pi}{sup 0}{nu}{sub {tau}}, based on a sample corresponding to 4x10{sup 6} produced {tau}-pair events. We determine the integrated structure functions, which depend only on the three pion invariant mass, as well as the structure functions differential in the Dalitz plot variables. We extract model independent limits on non-axial-vector contributions from the measured structure functions as less than 16.6% of the total branching fraction, at the 95% confidence level. Separating the non-axial-vector contributions into scalar and vector contributions, we measure that scalars (vectors) contribute with less than 9.4% (7.3%) to the total branching fraction, at the 95% confidence level. (c) 2000 The American Physical Society.

Published
2000

86. Limit on the tau neutrino mass fromτ−→π−π+π−π0ντ

Author

R. Godang, T. Lee, M. Schmidtler, D. Cinabro, I. P.J. Shipsey, G. C. Moneti, D. L. Kreinick, B. Gittelman, S. B. Athar, C. Bebek, Shuai Chen, A. Anastassov, P. G. Thies, A. D. Foland, T. E. Browder, R. Mountain, J. Urheim, I. Korolkov, Jon J Thaler, E. I. Shibata, H. Kagan, S. Kotov, R. Baker, G. E. Gladding, B. K. Heltsley, M.A. Palmer, E. Lipeles, E. Johnson, R. Janicek, T. Wlodek, K. M. Ecklund, C.Y. Prescott, A. L. Lyon, T. E. Coan, J. Williams, A. J. Weinstein, D. Y.J. Kim, G. Masek, D. G. Cassel, R. J. Morrison, Mats A Selen, Philip Baringer, A. J. Sadoff, Seung J. Lee, Tomasz Skwarnicki, Jianqiao Ye, T. O. Meyer, Juliet Ritchie Patterson, L. P. Perera, H. N. Nelson, E. von Toerne, J. J. O'Neill, L. K. Gibbons, V. V. Frolov, Xingjiang Zhou, M. Lohner, G. Eigen, S. J. Richichi, I. Karliner, T. K. Nelson, N. Menon, K. W. Edwards, A. Titov, M. Dickson, B. H. Behrens, H. Marsiske, B. I. Eisenstein, T. S. Hill, R. Ehrlich, P. S. Drell, Horst Severini, John Yelton, R. Mahapatra, S. Schuh, R. A. Briere, K. Honscheid, M. M. Zoeller, Y. Kwon, V. Savinov, R. M. Hans, K. Lingel, C. Plager, S. Anderson, D. S. Crowcroft, A. H. Mahmood, T. Bergfeld, V. Fadeyev, D. Z. Besson, J. Ernst, G. J. Zhou, Alice Bean, Jason Sang Hun Lee, S. Glenn, M. Ogg, V. Boisvert, A. Eppich, Andreas Warburton, J. E. Duboscq, J. Zheng, F. R. Wappler, Richard L. Greene, E. H. Thorndike, C. Sedlack, Arthur P. Smith, B. Valant-Spaight, D. L. Hartill, J. Fast, H. Krieg, R. Poling, K. K. Gan, Y. S. Gao, H. Yamamoto, H. Schwarthoff, J. Roy, H. P. Paar, Vivek Sharma, D. Coppage, G. Bonvicini, J. P. Alexander, C. R. Ng, X. Zhao, W. M. Sun, Ryszard Stroynowski, J. Lorenc, A. Shapiro, E. Nordberg, I. Narsky, P. Skubic, R. S. Galik, D. E. Jaffe, R. Ammar, C. Ward, I. C. Lai, S. Chan, J. Gronberg, S.C. Timm, Sacha E Kopp, M. S. Alam, M. A. Marsh, Dj Lange, N. Kwak, M. Bishai, Z. Xu, Sz Márka, A. Undrus, Karl Berkelman, S. E. Csorna, K. Kinoshita, G. W. Brandenburg, E. Dambasuren, Jing Wang, G. Majumder, D. H. Miller, P. Gaidarev, R. Ayad, E. M. Potter, P. I. Hopman, D. Roberts, Richard Wilson, A. Gritsan, D. M. Asner, Y. Li, C. Gwon, P. M. Patel, J. G. Thayer, D. Riley, S. Schrenk, Yanwen Liu, J. G. Smith, C. P. Jessop, S. Prell, T. Hart, T. Riehle, M. L. Perl, Yuichi Kubota, D. Ugolini, S. W. Gray, P. Pomianowski, L. Zhou, Ilya Kravchenko, C. D. Jones, J. W. Hinson, Yurii Maravin, J. L. Rodriguez, Frank Würthwein, G. Viehhauser, N. B. Mistry, A. Ershov, M. Athanas, D. Peterson, K. W. McLean, Sheldon Stone, Paul Avery, W. T. Ford, A. I. Rubiera, R. D. Kass, S. von Dombrowski, Marina Artuso, R. Davis, George D Gollin, J. D. Richman, and B. E. Berger

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Particle decay, 010308 nuclear & particles physics, Electron–positron annihilation, Tau neutrino, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract

From a data sample of 29058 ${\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ decays observed in the CLEO detector we derive a 95% confidence upper limit on the tau neutrino mass of 28 MeV.

Published
2000

87. Measurement ofB→ρlνdecay and|Vub

Author

T. Hart, T. Riehle, N. Kwak, M. Bishai, H. Marsiske, M. Dickson, R. M. Hans, S. Glenn, M. Ogg, Andreas Warburton, B. H. Behrens, B. K. Heltsley, E. Lipeles, S. J. Lee, G. D. Gollin, D. Ugolini, J. Zheng, K. K. Gan, G. Eigen, V. Fadeyev, Richard L. Greene, E. H. Thorndike, K. W. Edwards, A. Ershov, R. Davis, S. W. Gray, I. P.J. Shipsey, J. Roy, W. M. Sun, T. O. Meyer, B. Valant-Spaight, C. Bebek, D. Coppage, H. Krieg, G. Bonvicini, J. P. Alexander, T. E. Coan, J. Urheim, X. Zhao, C. R. Ng, Ryszard Stroynowski, W. T. Ford, A. I. Rubiera, R. D. Kass, S. E. Csorna, G. C. Moneti, Vivek Sharma, A. Smith, P. G. Thies, C. Sedlack, G. E. Gladding, S. Schrenk, Yanwen Liu, J. G. Smith, C. P. Jessop, E. I. Shibata, L. P. Perera, J. Lorenc, T. Wlodek, A. J. Weinstein, Tomasz Skwarnicki, S. Prell, Y. Kwon, V. Savinov, M. Athanas, K. M. Ecklund, A. L. Lyon, J. J. Thaler, A. Shapiro, H. N. Nelson, D. Z. Besson, D. Peterson, T. Bergfeld, P. Skubic, S. Kotov, K. W. McLean, E. Johnson, D. L. Kreinick, K. Kinoshita, S. von Dombrowski, Sheldon Stone, G. W. Brandenburg, S. J. Richichi, R. Janicek, P. Pomianowski, I. Narsky, T. E. Browder, Paul Avery, M. Lohner, A. Titov, D. E. Jaffe, L. Zhou, T. S. Hill, Shuai Chen, A. Anastassov, Ilya Kravchenko, L. K. Gibbons, V. V. Frolov, C. D. Jones, D. Y.J. Kim, I. Korolkov, R. Baker, J. W. Hinson, John Yelton, R. Mahapatra, M.A. Palmer, Karl Berkelman, Yurii Maravin, R. Ehrlich, Richard Wilson, A. Gritsan, R. Ayad, G. J. Zhou, S. Schuh, E. M. Potter, D. L. Hartill, J. L. Rodriguez, Ron Poling, C. Plager, S. Anderson, G. Masek, P. I. Hopman, D. S. Crowcroft, Juliet Ritchie Patterson, Sacha E Kopp, Frank Würthwein, D. Roberts, M. S. Alam, G. Viehhauser, E. Dambasuren, Jing Wang, J. Fast, N. B. Mistry, G. Majumder, Z. Xu, H. Yamamoto, H. Schwarthoff, H. P. Paar, Marina Artuso, X. J. Zhou, R. Ammar, Sz Márka, Horst Severini, F. R. Wappler, J. D. Richman, R. A. Briere, H. Kagan, Alice Bean, I. C. Lai, D. H. Miller, S. Chan, Jason Sang Hun Lee, E. Nordberg, N. Menon, P. Gaidarev, V. Boisvert, A. Eppich, M. A. Marsh, A. Undrus, S. B. Athar, R. J. Morrison, Mats A Selen, K. Honscheid, A. J. Sadoff, C. Ward, T. K. Nelson, D. Riley, J. Gronberg, S.C. Timm, M. M. Zoeller, J. E. Duboscq, Dj Lange, Y. S. Gao, C.Y. Prescott, M. L. Perl, A. H. Mahmood, Yuichi Kubota, B. E. Berger, Alain Bellerive, Jianqiao Ye, D. M. Asner, Y. Li, C. Gwon, P. M. Patel, A. D. Foland, J. G. Thayer, J. Williams, Philip Baringer, R. Godang, T. Lee, M. Schmidtler, R. Mountain, P. S. Drell, D. G. Cassel, I. Karliner, B. I. Eisenstein, K. Lingel, J. Ernst, D. Cinabro, B. Gittelman, E. von Toerne, and J. J. O'Neill

Subjects
Physics, Semileptonic decay, Nuclear and High Energy Physics, Muon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, 01 natural sciences, Crystallography, 0103 physical sciences, B meson, Cornell Electron Storage Ring, 010306 general physics, Energy (signal processing)
Abstract

Using a sample of 3.3x10{sup 6} {upsilon}(4S){yields}BB(bar sign) events collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR), we measure B(B{yields}{rho}l{nu}), |V{sub ub}|, and the partial rate ({delta}{gamma}) in three bins of q{sup 2}{identical_to}(p{sub B}-p{sub {rho}}){sup 2}. We find B(B{sup 0}{yields}{rho}{sup -}l{sup +}{nu})=(2.69{+-}0.41{sub -0.40}{sup +0.35}{+-}0.50)x10{sup -4}, |V{sub ub}|=(3.23{+-}0.24{sub -0.26}{sup +0.23}{+-}0.58)x10{sup -3}, {delta}{gamma}(0

Published
2000

88. Hadronic structure in the decayτ−→ντπ−π0π0and the sign of the tau neutrino helicity

Author

P. S. Drell, K. Lingel, J. Ernst, D. Cinabro, B. Gittelman, R. Godang, C. Sedlack, J. J. O'Neill, T. E. Coan, T. Lee, M. Schmidtler, H. Kagan, J. Lorenc, X. Zhao, B. H. Behrens, W. T. Ford, A. J. Weinstein, A. I. Rubiera, R. D. Kass, Richard L. Greene, P. Pomianowski, N. Kwak, M. Bishai, Tomasz Skwarnicki, S. E. Csorna, H. N. Nelson, E. H. Thorndike, P. Skubic, T. O. Meyer, S. J. Richichi, L. K. Gibbons, L. Zhou, Ilya Kravchenko, Karl Berkelman, C. D. Jones, R. Mountain, D. Coppage, Sheldon Stone, D. E. Jaffe, I. Narsky, G. Bonvicini, J. I. Thaler, Paul Avery, J. W. Hinson, Alain Bellerive, J. P. Alexander, K. Kinoshita, B. E. Berger, T. K. Nelson, C. Prescot, C. Bebek, G. W. Brandenburg, A. Ershov, D. M. Asner, S. Kotov, Y. Li, C. Gwon, Yurii Maravin, S. Schrenk, Yanwen Liu, J. G. Smith, R. Janicek, G. J. Zhou, P. M. Patel, C. P. Jessop, Shuai Chen, A. Anastassov, I. Korolkov, R. Baker, J. G. Thayer, R. Davis, C. Ward, Jianqiao Ye, T. Wlodek, S. Prell, R. J. Morrison, Mats A Selen, Y. Kwon, V. Savinov, J. Gronberg, D. Riley, S.C. Timm, M. M. Zoeller, R. S. Galik, H. Marsiske, Z. Ling, T. Hart, D. Z. Besson, J. Urheim, A. J. Sadoff, I. P.J. Shipsey, T. Riehle, K. W. Edwards, E. M. Potter, P. G. Thies, P. I. Hopman, M. L. Perl, D. L. Hartill, A. Soffer, Dj Lange, D. Ugolini, D. Roberts, J. Roy, H. P. Paar, Sacha E Kopp, V. Fadeyev, Yuichi Kubota, E. I. Shibata, C. Plager, S. Anderson, W. M. Sun, E. Dambasuren, S. W. Gray, Ryszard Stroynowski, M. S. Alam, Jing Wang, G. Majumder, M. Dickson, M. Athanas, S. von Dombrowski, D. S. Crowcroft, Richard Wilson, A. Gritsan, D. Peterson, B. Valant-Spaight, D. G. Cassel, A. Shapiro, G. Eigen, E. Johnson, K. W. McLean, T. Bergfeld, D. Y.J. Kim, E. Nordberg, M.A. Palmer, Z. Xu, K. Honscheid, S. Schuh, Sz Márka, D. H. Miller, N. Menon, A. Wolf, I. Karliner, P. Gaidarev, F. R. Wappler, A. Undrus, Alice Bean, J. E. Duboscq, J. Fast, H. Yamamoto, H. Schwarthoff, Jason Sang Hun Lee, B. I. Eisenstein, V. Boisvert, J. L. Rodriguez, A. Eppich, Frank Würthwein, S. B. Athar, G. Viehhauser, N. B. Mistry, R. Ammar, I. C. Lai, S. Chan, A. Titov, John Yelton, R. Mahapatra, M. A. Marsh, S. Ayad, M. Lohner, H. Krieg, R. Poling, C. R. Ng, G. Masek, Juliet Ritchie Patterson, X. J. Zhou, Horst Severini, R. A. Briere, A. H. Mahmood, B. K. Heltsley, E. Lipeles, S. J. Lee, G. D. Gollin, D. L. Kreinick, T. E. Browder, G. E. Gladding, K. M. Ecklund, A. L. Lyon, Y. S. Gao, T. S. Hill, R. Ehrlich, A. D. Foland, J. Williams, Philip Baringer, R. M. Hans, S. Glenn, M. Ogg, Andreas Warburton, Marina Artuso, L. P. Perera, J. Zheng, K. K. Gan, G. C. Moneti, Vivek Sharma, and A. Smith

Subjects
Physics, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, Dalitz plot, 01 natural sciences, Pion, Tau neutrino, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract

Based on a sample corresponding to $4.3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ produced $\ensuremath{\tau}$-pair events, we have studied hadronic dynamics in the decay ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ in data recorded by the CLEO II detector operating at the CESR ${e}^{+}{e}^{\ensuremath{-}}$ collider. The decay is dominated by the process ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}{a}_{1}^{\ensuremath{-}}(1260),$ with the ${a}_{1}^{\ensuremath{-}}$ meson decaying to three pions predominantly via the lowest dimensional (mainly S-wave) ${\ensuremath{\rho}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ Born amplitude. From model-dependent fits to the Dalitz plot and angular observables in bins of $3\ensuremath{\pi}$ mass, we find significant additional contributions from amplitudes for ${a}_{1}$ decay to $\ensuremath{\sigma}\ensuremath{\pi},$ ${f}_{0}(1370)\ensuremath{\pi},$ and ${f}_{2}(1270)\ensuremath{\pi},$ as well as higher dimensional ${a}_{1}\ensuremath{\rightarrow}\ensuremath{\rho}\ensuremath{\pi}$ and ${\ensuremath{\rho}}^{\ensuremath{'}}\ensuremath{\pi}$ amplitudes. Notably, the squared $\ensuremath{\sigma}\ensuremath{\pi}$ amplitude accounts for approximately 15% of the total ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ rate in the models considered. The data are well described using couplings to these amplitudes that are independent of the $3\ensuremath{\pi}$ mass. These amplitudes also provide a good description for the ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ Dalitz plot distributions. We have searched for additional contributions from ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{\ensuremath{\tau}}{\ensuremath{\pi}}^{\ensuremath{'}}\ensuremath{-}(1300).$ We place $90%$ confidence level upper limits on the branching fraction for this channel of between $1.0\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ and $1.9\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4},$ depending on the ${\ensuremath{\pi}}^{\ensuremath{'}}$ decay mode considered. The ${\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ mass spectrum is parametrized by a Breit-Wigner form with a mass-dependent width which is specified according to the results of the Dalitz plot fits plus an unknown coupling to an ${a}_{1}\ensuremath{\rightarrow}{K}^{*}K$ amplitude. From a ${\ensuremath{\chi}}^{2}$ fit using this parametrization, we extract the pole mass and width of the ${a}_{1},$ as well as the magnitude of the ${K}^{*}K$ coupling. We have also investigated the impact of a possible contribution from the ${a}_{1}^{\ensuremath{'}}(1700)$ meson on this spectrum. Finally, exploiting the parity-violating angular asymmetry in ${a}_{1}\ensuremath{\rightarrow}3\ensuremath{\pi}$ decay, we determine the signed value of the $\ensuremath{\tau}$ neutrino helicity to be ${h}_{{\ensuremath{\nu}}_{\ensuremath{\tau}}}=\ensuremath{-}1.02\ifmmode\pm\else\textpm\fi{}0.13 (\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.03 (\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t}+\mathrm{m}\mathrm{o}\mathrm{d}\mathrm{e}\mathrm{l}),$ confirming the left-handedness of the $\ensuremath{\tau}$ neutrino.

Published
1999

89. Charged Track Multiplicity in B Meson Decay

Author

Shuai Chen, A. Anastassov, I. Korolkov, R. Baker, R. Davis, D. E. Jaffe, L. Jian, George D Gollin, Yurii Maravin, S. E. Csorna, S. Schrenk, Yanwen Liu, J. G. Smith, C. P. Jessop, Marina Artuso, A. Wolf, D. L. Kreinick, J. J. Thaler, M. Lohner, K. Kinoshita, G. W. Brandenburg, S. Prell, T. E. Browder, N. Menon, B. H. Behrens, Y. S. Gao, Y. J. Kwon, S. B. Athar, E. Dambasuren, Jing Wang, G. Majumder, Ian Shipsey, D. H. Miller, J. Zheng, T. O. Meyer, C. Bebek, S. von Dombrowski, C. Sedlack, H. Marsiske, F. Blanc, P. Gaidarev, J. Roy, W. M. Sun, Ryszard Stroynowski, Z. Xu, Sz Márka, J. Lorenc, G. E. Gladding, A. D. Foland, D. L. Hartill, T. K. Nelson, C. Plager, S. Anderson, V. Savinov, V. Fadeyev, T. Wlodek, M. B. Spencer, Richard L. Greene, R. A. Briere, E. H. Thorndike, Jiejun Wu, K. M. Ecklund, P. Skubic, D. Z. Besson, Sheldon Stone, Paul Avery, A. L. Lyon, Vivek Sharma, J. Williams, B. Valant-Spaight, I. Narsky, Ilya Kravchenko, A. Smith, R. Ammar, A. Undrus, D. Peterson, Philip Baringer, K. W. McLean, J. W. Hinson, T. Hart, G. Bonvicini, J. P. Alexander, D. Y.J. Kim, I. C. Lai, K. K. Gan, S. Chan, L. P. Perera, M. M. Zoeller, X. Zhao, T. Riehle, L. K. Gibbons, W. T. Ford, J. Gronberg, S.C. Timm, V. V. Frolov, B. K. Heltsley, E. Lipeles, S. J. Lee, K. Honscheid, A. I. Rubiera, R. D. Kass, R. Ayad, E. M. Potter, D. Ugolini, P. I. Hopman, J. L. Rodriguez, M. A. Marsh, Frank Würthwein, T. S. Hill, S. W. Gray, G. Viehhauser, R. Ehrlich, F. R. Wappler, G. C. Moneti, J. E. Duboscq, K. W. Edwards, N. B. Mistry, P. G. Thies, Dj Lange, D. Roberts, R. M. Hans, L. Ling, Andreas Warburton, E. I. Shibata, A. Ershov, R. S. Galik, J. Urheim, E. Johnson, A. Titov, M.A. Palmer, Xingjiang Zhou, John Yelton, R. Mahapatra, Karl Berkelman, M. Dickson, M. Saleem, R. J. Morrison, Mats A Selen, A. J. Sadoff, N. Kwak, M. Bishai, Sacha E Kopp, H. Krieg, R. Poling, M. S. Alam, C. R. Ng, S. Ahmed, C. D. Jones, G. Masek, Juliet Ritchie Patterson, Horst Severini, B. E. Berger, J. D. Richman, E. von Toerne, J. J. O'Neill, D. Cinabro, T. Bergfeld, B. Gittelman, P. Pomianowskie, R. Godang, T. Lee, M. Schmidtler, J. Fast, H. Yamamoto, H. Schwarthoff, P. S. Drell, K. Lingel, R. Mountain, Harris Kagan, J. Ernst, C.Y. Prescott, D. G. Cassel, Jianqiao Ye, A. H. Mahmood, I. Karliner, B. I. Eisenstein, H. P. Paar, A. Shapiro, E. Nordberg, G. J. Zhou, T. E. Coan, A. J. Weinstein, Tomasz Skwarnicki, S. J. Richichi, S. Schuh, Alice Bean, Jason Sang Hun Lee, V. Boisvert, A. Eppich, G. Eigen, S. Kotov, R. Janicek, Richard Wilson, A. Gritsan, D. M. Asner, Y. Li, C. Gwon, P. M. Patel, J. G. Thayer, D. Riley, M. L. Perl, and Yuichi Kubota

Subjects
Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, Multiplicity (mathematics), 01 natural sciences, Charged particle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, B meson, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, 010306 general physics
Abstract

We have used the CLEO II detector to study the multiplicity of charged particles in the decays of B mesons produced at the $\Upsilon(4S)$ resonance. Using a sample of 1.5 x 10^6 B meson pairs, we find the mean inclusive charged particle multiplicity to be 10.71 +- 0.02 +0.21/-0.15 for the decay of the pair. This corresponds to a mean multiplicity of 5.36 +- 0.01 +0.11/-0.08 for a single B meson. Using the same data sample, we have also extracted the mean multiplicities in semileptonic and nonleptonic decays. We measure a mean of 7.82 +- 0.05 +0.21/-0.19 charged particles per $B\bar{B}$ decay when both mesons decay semileptonically. When neither B meson decays semileptonically, we measure a mean charged particle multiplicity of 11.62 +- 0.04 +0.24/-0.18 per $B\bar{B}$ pair., Comment: 11 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS

Published
1999
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90. Teleoperated Pipe Manipulation

Author

Leonhard E. Bernold, Steven J. Lorenc, and Junbok Lee

Subjects
Engineering, business.industry, Teleoperation, business, Simulation
Published
1998

91. Cable Based Robotic Work Platform for Construction

Author

T. Richter, Leonhard E. Bernold, and Steven J. Lorenc

Subjects
Engineering, medicine.medical_specialty, Work (electrical), business.industry, Geography of robotics, medicine, business, Manufacturing engineering, Construction engineering
Published
1998

94. Ground states of a one-dimensional lattice-gas model with an infinite-range nonconvex interaction. A numerical study

Author

Cz. Oleksy and J. Lorenc

Subjects
Physics, Lattice constant, Conjecture, Condensed matter physics, Lattice (order), Convergence of Fourier series, Condensed Matter (cond-mat), FOS: Physical sciences, Fermi surface, Electron, Condensed Matter, Phase diagram, Surface states
Abstract

We consider a lattice-gas model with an infinite range pairwise noncovex interaction. It might be relevant, for example, for adsorption of alkaline elements on W(112) and Mo(112). We study a competition between the effective dipole-dipole and indirect interactions. The resulting ground state phase diagrams are analysed (numerically) in detail. We have found that for some model parameters the phase diagrams contain a region dominated by several phases only with periods up to nine lattice constants. The remaining phase diagrams reveal a complex structure of usually long periodic phases. We also discuss a possible role of surace states in phase transitions., Comment: 16 pages, 5 Postscript figures; Physical Review B15 (15 August 1996), in press

Published
1996

95. Third-Order Control of a Planar System Tracking Constant Curvature Paths

Author

S. J. Lorenc and M. M. Stanišić

Subjects
Constant curvature, Physics, Third order, Planar, Mathematical analysis, Path tracking, Rate control, Geometry, Radius of curvature, Gear ratio, Curvature
Abstract

This paper develops the Cubic of Stationary Curvature for a planar two-revolute open chain. The Cubic is then used to develop a third-order of resolved motion rate control for constant curvature paths. The third-order of control increases the tracking accuracy of the two-revolute system and raises the question of optimal order of control.

Published
1994

97. Averting Excavation Disaster

Author

Leonhard E. Bernold, Stephen J. Lorenc, and Catherine Carver

Subjects
Engineering, business.industry, Strategy and Management, Industrial relations, General Engineering, Forensic engineering, Excavation, Management Science and Operations Research, business, Construction automation
Abstract

An instrument named the Buried Utilities Detection System (BUDS), developed by the Construction Automation and Robotics Laboratory (CARL) of North Carolina State University (NCSU), is able to locate utilities in the field at excavation sites, helping to prevent accidents to improperly marked or identified utility lines. The BUDS technology has other potential applications, including the detection of unexploded ordinance.

Published
1998

98. Landau's theory of second-order phase transitions and its application to ferromagnetism

Author

J. Lorenc, J A Przystawa, and A. P. Cracknell

Subjects
Physics, Phase transition, Condensed matter physics, General Engineering, General Physics and Astronomy, Order (ring theory), Condensed Matter Physics, Landau theory, Thermodynamic potential, Ferromagnetism, Order (business), Minification, Statistical physics, Spurious relationship
Abstract

A detailed comparison is made between the theory of second-order phase transitions in terms of Landau's original approach of minimizing the thermodynamical potential and in terms of the established group-theoretical approach, which is derived from the general thermodynamical approach. It is shown that the two approaches are not equivalent and a number of spurious features are identified in the existing accounts of the group-theoretical criteria. Thus, minimization of the thermodynamic potential frequently gives some additional information which could not be obtained from the group-theoretical approach.

Published
1976

99. A theory of incommensurate phase transitions in anisotropically stressed BaMnF4

Author

J Lorenc

Subjects
Physics, Phase transition, Conjecture, Condensed matter physics, Component (thermodynamics), Group (mathematics), High Energy Physics::Lattice, General Engineering, General Physics and Astronomy, Condensed Matter Physics, Critical exponent, Anisotropic stress, Phase diagram
Abstract

A simplified theory of incommensurate phase transitions in anisotropically stressed BaMnF4is proposed. The equilibrium properties and phase transitions induced by temperature and/or anisotropic stress are analysed in terms of the Landau-Ginzburg theory. A conjecture concerning the phase diagram is presented. The occurrence of critical end points or n=2 component 'renormalised' tricritical points is demonstrated within the renormalisation group approach.

Published
1983

100. A comment on the chain subduction criterion

Author

J Lorenc, A P Cracknell, and J A Przystawa

Subjects
Minimisation (psychology), Physics, Continuous phase modulation, Chain (algebraic topology), Subduction, General Engineering, General Physics and Astronomy, Statistical physics, Condensed Matter Physics, Thermodynamic potential
Abstract

It is shown, by considering an example, that the chain subduction criterion (including the conventional group-theoretical criteria) considered by Jaric and Birman (see Phys. Rev. B, vol.16, p.2564, 1977) is not equivalent to the original Landau thermodynamic approach for the lower-symmetry phases occurring at continuous phase transitions. The authors argue that a procedure to replace the Landau thermodynamic method should be based on the use of Ascher's maximality principle, together with further restrictions coming from the minimisation of the thermodynamic potential.

Published
1980

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