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201. Search for AnomalousWWandWZProduction inpp¯Collisions ats=1.8TeV

Author: N. I. Bojko, M. A. Shupe, J. S. Hoftun, J. N. Butler, P. D. Grannis, H. Piekarz, B. Baldin, Y. Ducros, J. B. Singh, Victor Daniel Elvira, S. Youssef, S. Choi, Robert J. McCarthy, A. Sanchez-Hernandez, D.R. Green, J. Balderston, Eunil Won, W. M. Smart, T. G. Trippe, J. M. Hauptman, L. A. Markosky, Robert Hirosky, C. Cretsinger, B. Gibbard, M. Strovink, S. H. Aronson, Shuichi Kunori, E. James, K. A. Johns, R. D. Schamberger, S. C. Loken, A. N. Galyaev, W. Y. Chen, Gilvan Alves, George R. Kalbfleisch, T. L. Taylor, Sharon Hagopian, C. T. Murphy, M. Bhattacharjee, J. Sculli, Nikos Varelas, T. Hu, A. K.A. Maciel, Heriberto Castilla-Valdez, Paolo Franzini, V. S. Narasimham, W. X. Gu, C. K. Jung, T. McKibben, K. S. Hahn, D. Cutts, M. V. S. Rao, D. Stewart, Sebastien Jonathan Kahn, S. N. Gurzhiev, T. Huehn, D. Fein, D. Chakraborty, A. A. Mayorov, W. E. Cooper, M. Nicola, Yu. Pischalnikov, S. Protopopescu, Greg Landsberg, R. K. Shivpuri, D. R. Claes, N. Denisenko, S. Reucroft, J. Drinkard, Don Lincoln, Erich Varnes, J. M. De Miranda, M. K. Fatyga, C. Yoshikawa, S. Lami, T. L. Geld, Sándor Lökös, J. Yang, J. Snow, M. Tartaglia, Kaushik De, S. M. Chang, S. P. Denisov, Jong-Sung Yu, Y. Fisyak, Quing Zhu, V. M. Podstavkov, M. Fortner, J. Featherly, V. Glebov, Marvin Johnson, M. R. Krishnaswamy, F. Hsieh, L. Magaña-Mendoza, A. R. Clark, A. L. Lyon, F. Borcherding, J. Perkins, A. Para, Peter Nemethy, Sergey Chekulaev, G. Eppley, H. da Motta, N.V. Mokhov, B. May, L. Lueking, B. G. Pope, N. Grossman, A. P. Heinson, J. Borders, Andrew White, J. G.R. Lima, A. S. Ito, A. V. Kozelov, R. E. Hall, J. L. González Solís, Joan A. Guida, I. Adam, J. Z.Y. Jiang, L. T. Goss, P. Grudberg, Y. E. Gutnikov, Stephen Wimpenny, S. Krzywdzinski, V. I. Kochetkov, Hiroaki Aihara, Raymond Brock, Boaz Klima, K. W. Merritt, J. F. Bartlett, Robert Kehoe, E. Oltman, A. Zylberstejn, J. Bendich, Jan M. Guida, M.K. Fatyga, J. Kourlas, H. Greenlee, J. Cochran, D. Nesic, M. Abolins, Elizaveta Shabalina, G. Di Loreto, P. M. Tuts, B. Gobbi, R.E. Avery, Yanwen Liu, P. Mooney, John Hobbs, E. A. Kozlovski, D. Norman, M. R. Adams, Robert Snihur, N. K. Mondal, H. T. Diehl, S. Willis, M. Pang, Young-Sang Yu, N. A. Roe, V. Oguri, M. L. Kelly, D. Denisov, T. Marshall, B. S. Acharya, C. L. Kim, C. Boswell, R. W. Stephens, S. A. Jerger, Sarah Catherine Eno, T.R. McMahon, M. Paterno, M. L. Stevenson, Darien Wood, G.E. Forden, A. Boehnlein, P. M. Sood, D. Pušeljić, Srinivasan Rajagopalan, Thomas Ferbel, G. Wang, Alberto Santoro, D. P. Stoker, P. Yamin, J. Warchol, S. Abachi, E. Flattum, Nicholas John Hadley, J. Ellison, H. Haggerty, P. Padley, H. Johnstad, S. R. Dugad, Jing Li, Matthew Jones, S. Mani, S. Fuess, A. D. Bross, Alexey Volkov, Vyacheslav Klyukhin, P.F. Ermolov, S. Blessing, R. Markeloff, Scott Snyder, Suman Bala Beri, R. Partridge, Howard Gordon, F. Nang, Richard B. Lipton, Ying Li, R. Madden, K. C. Frame, O. Ramirez, P. Rubinov, Cecilia Elena Gerber, Mitchell Wayne, H. Schellman, J. M. Kohli, L. T. Kerth, J. Wilcox, L. Rasmussen, V. S. Burtovoi, Peter W. Draper, S. Fahey, A. Baden, M. Mudan, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, G. C. Blazey, A. Leflat, S. Igarashi, P. R. G. Virador, Ulrich Heintz, Stefan Grünendahl, J. Thompson, R. Hernández-Montoya, R. Yamada, S. Feher, R. Astur, M. I. Martin, J. S. Kang, M. A.C. Cummings, R. J. Madaras, B. Hoeneisen, Lee Sawyer, Ting Hu, Q. Z. Li-Demarteau, B. Gómez, S. H. Ahn, Elizabeth Gallas, H. Jostlein, Z. H. Zhu, Jianming Qian, A. L. Spadafora, D. Buchholz, P. I. Goncharov, R. Hatcher, Orin I. Dahl, John Rutherfoord, A. Zieminski, M. Diesburg, P. Tamburello, N. Parua, Randy Ruchti, W. Guryn, D. Owen, Heng Xu, T. Heuring, P. A. Rapidis, A. Bischoff, J. Tarazi, J. A. Wightman, J. F. Glicenstein, A. V. Kostritskiy, Y. M. Park, A. M. Smith, S. Glenn, J. McKinley, D. A. Stoianova, G. Finocchiaro, Tong Hu, Gregory R Snow, Marc M Baarmand, James C. Green, Wagner Carvalho, S. Y. Jun, Sissel Hansen, H. D. Wahl, Gordon Watts, M. Demarteau, V. Sirotenko, S. Banerjee, P. Yepes, T. Joffe-Minor, O. V. Eroshin, H. Johari, V. Balamurali, M. H.G. Souza, C. Yanagisawa, Phillip Gutierrez, K. Bazizi, N. Amos, K. Genser, H. E. Montgomery, H. E. Fisk, T. Fahland, Rajendran Raja, D. Vititoe, A. Jonckheere, G. Guglielmo, J. Solomon, C. S. Mishra, A. P. Vorobiev, Stephan Linn, Gervasio Gomez, R. J. Genik, N. Oshima, E. W. Anderson, Brad Abbott, T. Yasuda, Daria Zieminska, J. F. Lebrat, Vasken Hagopian, H. Weerts, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, D. Edmunds, E. Neis, N. N. Biswas, B. I. Klochkov, Meenakshi Narain, A. Peryshkin, S. Chopra, Allen Mincer, Andre Sznajder, A. Narayanan, M. D. Peters, W. G. Cobau, M. Sosebee, Hui Li, L. Oesch, J. Alitti, J. Bantly, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, J. T. White, D. Hedin, V. A. Bezzubov, J. P. Negret, R. P. Smith, C. Klopfenstein, Harrison Prosper, J. Jaques, P. C. Bhat, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, J. Womersley, R. L. Dixon, Michael Rijssenbeek, G. Álvarez, V. N. Evdokimov, D. Casey, D.S. Koltick, J. Kotcher, J. T. Linnemann, E. G. Zverev, Brajesh C Choudhary, N. Graf, K. Streets, Vipin Bhatnagar, A. Klatchko, G. Griffin, M. Chung, C. H. Park, H. S. Mao, H. L. Melanson, P. Z. Quintas, S. K. Kim, H. A. Neal, J. H. Christenson, David H. Adams, H. C. Shankar, M. Goforth, and P. Bloom
Subjects: Physics, Particle physics, Physics::Medical Physics, Transverse momentum, General Physics and Astronomy, Production (computer science), Lambda, Coupling (probability), Boson
Abstract: We present results from a search for anomalous $\mathrm{WW}$ and $\mathrm{WZ}$ production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$. We used $p\overline{p}\ensuremath{\rightarrow}e\ensuremath{\nu}\mathrm{jjX}$ events observed during the 1992--1993 run of the Fermilab Tevatron collider, corresponding to an integrated luminosity of $13.7\ifmmode\pm\else\textpm\fi{}0.7{\mathrm{pb}}^{\ensuremath{-}1}$. A fit to the transverse momentum spectrum of the $W$ boson yields direct limits on the CP-conserving anomalous $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ coupling parameters of $\ensuremath{-}0.9l\ensuremath{\Delta}\ensuremath{\kappa}l1.1$ (with $\ensuremath{\lambda}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$) and $\ensuremath{-}0.6l\ensuremath{\lambda}l0.7$ (with $\ensuremath{\Delta}\ensuremath{\kappa}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$) at the 95% confidence level, for a form factor scale $\ensuremath{\Lambda}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.5\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$, assuming that the $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ coupling parameters are equal.
Published: 1996
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202. A new detector technique using triangular scintillating strips to measure the position of minimum ionizing particles

Author: Jianming Qian, L. Oesch, P. Baringer, A. Bross, F. Hsieh, D. Lincoln, Hsiang-nan Li, S. Margulies, E. Neis, M. R. Adams, N. Amos, M. Chung, Michael Rijssenbeek, H. A. Neal, and D. A. Averill
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, 9 mm caliber, Detector, Cosmic ray, STRIPS, Charged particle, law.invention, Wavelength, Optics, law, Position (vector), Granularity, business, Instrumentation
Abstract: We present a new technique for measuring the position where a charged particle transits a detector which achieves a position resolution much better than the granularity of the detector. This is accomplished by using scintillating strips with a triangular cross-section and an axial wavelength shifting fiber readout. We tested strips with a base of 9 mm and a height of 4.5 mm and achieved a position resolution of 567 μm. With over 60 000 cosmic ray data points per strip, we are able to precisely characterize the performance of this detector design. In addition, we offer suggestions for future improvements in the achievable position resolution. Additional performance results, including uniformity and yield, are also discussed.
Published: 1996
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203. Studies of topological distributions of inclusive three- and four-jet events inp¯pcollisions ats=1800GeV with the D0 detector

Author: T. McKibben, M. V. S. Rao, Y. Pischalnikov, Ulrich Heintz, M. Sosebee, M. Diesburg, D. Owen, J. Tarazi, M. Bhattacharjee, R. Hirosky, J. Alitti, K. S. Hahn, D. Cutts, M. Abolins, R. Snihur, J. Bantly, N. Varelas, P. Mooney, T. L. Taylor, Andrew White, Greg Landsberg, Andrew Brandt, R. Engelmann, Liu Chen, N. K. Mondal, S. A. Jerger, P. Grudberg, T. McMahon, H.E. Miettinen, H. T. Diehl, Y. E. Gutnikov, A. Leflat, S. M. Chang, Heriberto Castilla-Valdez, T. L. Geld, J. M. Hauptman, J. Kourlas, John Hobbs, A. Boehnlein, M. Paterno, Cecilia Elena Gerber, K. Streets, Vipin Bhatnagar, W. G. Cobau, M. I. Martin, J. S. Kang, P. M. Sood, A. Bischoff, C. Shaffer, D. Cullen-Vidal, N. N. Biswas, M. R. Adams, A. V. Kostritskiy, F. Borcherding, J. Ellison, S. Fuess, Young-Sang Yu, N. A. Roe, Sissel Hansen, J. Borders, Pushpalatha C Bhat, M. Mudan, E. Oltman, Dongliang Zhang, Ph. Mangeot, M. Nicola, R. Partridge, E. Flattum, Jianming Qian, R. L. McCarthy, F. Nang, Peter Nemethy, J. M. Guida, D. Pušeljić, G. Eppley, J. Z.Y. Jiang, G. Griffin, J. G.R. Lima, S. Krzywdzinski, L. T. Goss, V. I. Kochetkov, Sarah Catherine Eno, L. Lueking, Dhiman Chakraborty, B. Gibbard, Elizabeth Gallas, H. Jostlein, M. Mohammadi-Baarmand, A. S. Ito, B. Hoeneisen, Lee Sawyer, R. Astur, J. Yu, H. A. Neal, R. Hatcher, J. Featherly, D. Nešić, Vyacheslav Klyukhin, V. A. Bezzubov, J. P. Negret, R. P. Smith, Richard B. Lipton, H. C. Shankar, Ying Li, P. I. Goncharov, V. Glebov, Marvin Johnson, W. Guryn, Matthew Jones, A. Zylberstejn, A. V. Kozelov, M. H.G. Souza, W. M. Smart, S. Youssef, Tong Hu, Haifeng Li, C. H. Park, H. S. Mao, J. Sculli, H. Johari, H. E. Montgomery, V. Balamurali, A. Taketani, S. Glenn, J. McKinley, T. Heuring, Michael Shupe, Hiroaki Aihara, M. Goforth, E. A. Kozlovski, D. L. Adams, A. Baden, Y. Y. Shao, G. C. Blazey, P. M. Tuts, R. Yamada, Robert Kehoe, D. A. Stoianova, Wagner Carvalho, H. Greenlee, C. Cretsinger, Y. M. Park, S. Margulies, J. Balderston, T. Hu, S. H. Ahn, M. Strovink, E. James, S.A. Kahn, T. Joffe-Minor, Meenakshi Narain, A. Peryshkin, C. Yanagisawa, R. W. Stephens, S. Lami, C. T. Murphy, B. G. Pope, S. Lökös, Sharon Hagopian, Orin I. Dahl, John Rutherfoord, A. K.A. Maciel, D. Lincoln, J. Wang, Harrison Prosper, A. Pluquet, P.F. Ermolov, H. E. Fisk, Eunil Won, P. Bloom, Yanxi Zhang, M.K. Fatyga, M. Demarteau, R. E. Avery, F. Wen, E. W. Anderson, A. Bross, J. A. Wightman, Raymond Brock, Boaz Klima, N. I. Bojko, V. S. Burtovoi, G. Finocchiaro, J. Solomon, William A. Wenzel, I. Bertram, D. Vititoe, W. Y. Chen, R. D. Schamberger, R. K. Shivpuri, S. Gao, Gilvan Alves, A. Klatchko, A. Narayanan, Bruno Mansoulie, Elizaveta Shabalina, S. Durston-Johnson, D. Green, James C. Green, H. L. Melanson, P. Z. Quintas, R. J. Genik, A. L. Read, M. L. Stevenson, F. Lobkowicz, George R. Kalbfleisch, B. S. Acharya, C. L. Kim, S. K. Kim, Serban Protopopescu, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, J. Drinkard, D. Norman, J. S. Hoftun, J. N. Butler, T. Rockwell, P. D. Grannis, R. L. Dixon, M. Tartaglia, H. Piekarz, Michael Rijssenbeek, N. Denisenko, D. P. Stoker, Kaushik De, Y. Fisyak, J. H. Christenson, W. X. Gu, A. A. Mayorov, S. Reucroft, Allen Mincer, B. I. Klochkov, D. Edmunds, E. Neis, B. May, B. Baldin, S. Willis, M. Pang, A. Kernan, Y. Ducros, J. B. Singh, A. Jonckheere, C. Yoshikawa, M. K. Fatyga, D. Buchholz, J. T. White, A. P. Vorobiev, Stephan Linn, V. N. Evdokimov, D.S. Koltick, Andre Sznajder, J. T. Linnemann, P. Padley, Alexey Volkov, M. D. Peters, J. Bendich, Victor Daniel Elvira, P. Tamburello, M. D. Marx, Heng Xu, B. Gobbi, H. D. Wahl, James H Cochran, N. Amos, A. N. Galyaev, Mitchell Wayne, H. Schellman, J. M. Kohli, N.V. Mokhov, J. Yang, N. Oshima, G. E. Forden, A. P. Heinson, S. Chopra, J. Thompson, R. J. Madaras, K. Denisenko, M. Chung, L. Oesch, G. Wang, Alberto Santoro, B. Gómez, Z. H. Zhu, Laurent Chevalier, H. Haggerty, Daria Zieminska, D. Hedin, Stephen Wimpenny, M. A. C. Cummings, A. R. Clark, V. M. Podstavkov, H. Johnstad, S. Fahey, W. E. Cooper, R. Demina, Gregory R Snow, T. Marshall, A. L. Lyon, S. H. Aronson, Shuichi Kunori, K. A. Johns, A. Smith, J. F. Lebrat, Daniel R Claes, C. Boswell, T. Yasuda, M. Fortner, J. Perkins, C. Klopfenstein, S. Abachi, Darien Wood, V. Oguri, R. E. Hall, J. L. González Solís, Nicholas John Hadley, Suman Bala Beri, G. Álvarez, S. Blessing, Scott Snyder, L. T. Kerth, J. Jaques, T. Huehn, R. Markeloff, I. V. Mandrichenko, D. Fein, Erich Varnes, J. Kotcher, J. Womersley, J. M. De Miranda, J. Warchol, R. Hernández-Montoya, A. Milder, C. Murphy, N. Grossman, Jing Li, S. Feher, N. Graf, P. Yamin, Brajesh C Choudhary, S. Mani, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, R. Madden, L. Rasmussen, Peter W. Draper, D. Stewart, S. N. Gurzhiev, Quing Zhu, S. Rusin, L. Markosky, G. Di Loreto, D. Denisov, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, N. Parua, Ting Hu, S. Igarashi, P. R. G. Virador, A. Zieminski, Q. Z. Li-Demarteau, P. A. Rapidis, Randy Ruchti, S. Y. Jun, A. Goldschmidt, T. Fahland, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, J. Wilcox, J. A. Guida, D. Casey, K. Genser, Rajendran Raja, S. C. Loken, Brad Abbott, Welathantri Gd Dharmaratna, C. S. Mishra, G. Guglielmo, Vasken Hagopian, H. Weerts, S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, S. Grünendahl, A. Para, Sergey Chekulaev, I. Adam, P. Rubinov, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, K. Bazizi, S. R. Dugad, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, and C. K. Jung
Subjects: Quantum chromodynamics, Physics, Quark, Nuclear and High Energy Physics, High Energy Physics::Phenomenology, Monte Carlo method, Tevatron, Jet (particle physics), Topology, law.invention, law, High Energy Physics::Experiment, Fermilab, Collider, Energy (signal processing)
Abstract: The global topologies of inclusive three- and four-jet events produced in $\overline{p}p$ interactions are described. The three- and four-jet events are selected from data recorded by the D0 detector at the Fermilab Tevatron Collider operating at a center-of-mass energy of $\sqrt{s}=1800$ GeV. The measured, normalized distributions of various topological variables are compared with parton-level predictions of tree-level QCD calculations. The parton-level QCD calculations are found to be in good agreement with the data. The studies also show that the topological distributions of the different subprocesses involving different numbers of quarks are very similar and reproduce the measured distributions well. The parton-shower Monte Carlo generators provide a less satisfactory description of the topologies of the three- and four-jet events.
Published: 1996
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204. Acute renal failure and the MELAS syndrome, a mitochondrial encephalomyopathy

Author: Lance D. Dworkin, F Hsieh, and Reginald Y. Gohh
Subjects: Mitochondrial encephalomyopathy, medicine.medical_specialty, Mitochondrial disease, Renal function, urologic and male genital diseases, MELAS syndrome, Models, Biological, Gastroenterology, Internal medicine, MELAS Syndrome, medicine, Humans, Acute tubular necrosis, Mitochondrial Encephalomyopathies, business.industry, Brain, General Medicine, Kidney Tubular Necrosis, Acute, Middle Aged, medicine.disease, Cell Hypoxia, Diabetes Mellitus, Type 2, Nephrology, Lactic acidosis, Acidosis, Lactic, Female, Epilepsy, Tonic-Clonic, business
Abstract: Melas (mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes) is one of a group of heterogeneous yet clinically distinct syndromes ascribed to a defect in mitochondrial function. Here, the case of a patient diagnosed with the MELAS syndrome who subsequently developed acute renal failure is reported. Although no clear renal insult was evident at the time, the clinical picture was consistent with the diagnosis of acute tubular necrosis. The patient's renal function subsequently returned to baseline. This article reviews the literature concerning renal involvement in the mitochondrial encephalomyopathies, including MELAS, and proposes a mechanism by which patients suffering from mitochondrial disorders may be more susceptible to renal hypoxic injury and acute renal failure.
Published: 1996
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205. Search for Right-HandedWBosons and HeavyW′inpp¯Collisions ats=1.8TeV

Author: S. Abachi, B. Abbott, M. Abolins, B. S. Acharya, I. Adam, D. L. Adams, M. Adams, S. Ahn, H. Aihara, J. Alitti, G. Álvarez, G. A. Alves, E. Amidi, N. Amos, E. W. Anderson, S. H. Aronson, R. Astur, R. E. Avery, A. Baden, V. Balamurali, J. Balderston, B. Baldin, J. Bantly, J. F. Bartlett, K. Bazizi, J. Bendich, S. B. Beri, I. Bertram, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Bhattacharjee, A. Bischoff, N. Biswas, G. Blazey, S. Blessing, P. Bloom, A. Boehnlein, N. I. Bojko, F. Borcherding, J. Borders, C. Boswell, A. Brandt, R. Brock, A. Bross, D. Buchholz, V. S. Burtovoi, J. M. Butler, W. Carvalho, D. Casey, H. Castilla-Valdez, D. Chakraborty, S.-M. Chang, S. V. Chekulaev, L.-P. Chen, W. Chen, S. Chopra, B. C. Choudhary, J. H. Christenson, M. Chung, D. Claes, A. R. Clark, W. G. Cobau, J. Cochran, W. E. Cooper, C. Cretsinger, D. Cullen-Vidal, M. A. C. Cummings, D. Cutts, O. I. Dahl, K. De, M. Demarteau, R. Demina, K. Denisenko, N. Denisenko, D. Denisov, S. P. Denisov, H. T. Diehl, M. Diesburg, G. Di Loreto, R. Dixon, P. Draper, J. Drinkard, Y. Ducros, S. R. Dugad, S. Durston-Johnson, D. Edmunds, J. Ellison, V. D. Elvira, R. Engelmann, S. Eno, G. Eppley, P. Ermolov, O. V. Eroshin, V. N. Evdokimov, S. Fahey, T. Fahland, M. Fatyga, M. K. Fatyga, J. Featherly, S. Feher, D. Fein, T. Ferbel, G. Finocchiaro, H. E. Fisk, Y. Fisyak, E. Flattum, G. E. Forden, M. Fortner, K. C. Frame, P. Franzini, S. Fuess, E. Gallas, A. N. Galyaev, T. L. Geld, R. J. Genik II, K. Genser, C. E. Gerber, B. Gibbard, V. Glebov, S. Glenn, J. F. Glicenstein, B. Gobbi, M. Goforth, A. Goldschmidt, B. Gómez, P. I. Goncharov, J. L. González Solís, H. Gordon, L. T. Goss, N. Graf, P. D. Grannis, D. R. Green, J. Green, H. Greenlee, G. Griffin, N. Grossman, P. Grudberg, S. Grünendahl, W. X. Gu, G. Guglielmo, J. A. Guida, J. M. Guida, W. Guryn, S. N. Gurzhiev, P. Gutierrez, Y. E. Gutnikov, N. J. Hadley, H. Haggerty, S. Hagopian, V. Hagopian, K. S. Hahn, R. E. Hall, S. Hansen, R. Hatcher, J. M. Hauptman, D. Hedin, A. P. Heinson, U. Heintz, R. Hernández-Montoya, T. Heuring, R. Hirosky, J. D. Hobbs, B. Hoeneisen, J. S. Hoftun, F. Hsieh, Tao Hu, Ting Hu, Tong Hu, T. Huehn, S. Igarashi, A. S. Ito, E. James, J. Jaques, S. A. Jerger, J. Z.-Y. Jiang, T. Joffe-Minor, H. Johari, K. Johns, M. Johnson, H. Johnstad, A. Jonckheere, M. Jones, H. Jöstlein, S. Y. Jun, C. K. Jung, S. Kahn, G. Kalbfleisch, J. S. Kang, R. Kehoe, M. L. Kelly, L. Kerth, C. L. Kim, S. K. Kim, A. Klatchko, B. Klima, B. I. Klochkov, C. Klopfenstein, V. I. Klyukhin, V. I. Kochetkov, J. M. Kohli, D. Koltick, A. V. Kostritskiy, J. Kotcher, J. Kourlas, A. V. Kozelov, E. A. Kozlovski, M. R. Krishnaswamy, S. Krzywdzinski, S. Kunori, S. Lami, G. Landsberg, J-F. Lebrat, A. Leflat, H. Li, J. Li, Y. K. Li, Q. Z. Li-Demarteau, J. G. R. Lima, D. Lincoln, S. L. Linn, J. Linnemann, R. Lipton, Y. C. Liu, F. Lobkowicz, S. C. Loken, S. Lökös, L. Lueking, A. L. Lyon, A. K. A. Maciel, R. J. Madaras, R. Madden, S. Mani, H. S. Mao, S. Margulies, R. Markeloff, L. Markosky, T. Marshall, M. I. Martin, M. Marx, B. May, A. A. Mayorov, R. McCarthy, T. McKibben, J. McKinley, T. McMahon, H. L. Melanson, J. R. T. de Mello Neto, K. W. Merritt, H. Miettinen, A. Mincer, J. M. de Miranda, C. S. Mishra, M. Mohammadi-Baarmand, N. Mokhov, N. K. Mondal, H. E. Montgomery, P. Mooney, H. da Motta, M. Mudan, C. Murphy, C. T. Murphy, F. Nang, M. Narain, V. S. Narasimham, A. Narayanan, H. A. Neal, J. P. Negret, E. Neis, P. Nemethy, D. Nešić, M. Nicola, D. Norman, L. Oesch, V. Oguri, E. Oltman, N. Oshima, D. Owen, P. Padley, M. Pang, A. Para, C. H. Park, Y. M. Park, R. Partridge, N. Parua, M. Paterno, J. Perkins, A. Peryshkin, M. Peters, H. Piekarz, Y. Pischalnikov, V. M. Podstavkov, B. G. Pope, H. B. Prosper, S. Protopopescu, D. Pušeljić, J. Qian, P. Z. Quintas, R. Raja, S. Rajagopalan, O. Ramirez, M. V. S. Rao, P. A. Rapidis, L. Rasmussen, A. L. Read, S. Reucroft, M. Rijssenbeek, T. Rockwell, N. A. Roe, P. Rubinov, R. Ruchti, J. Rutherfoord, A. Santoro, L. Sawyer, R. D. Schamberger, H. Schellman, J. Sculli, E. Shabalina, C. Shaffer, H. C. Shankar, Y. Y. Shao, R. K. Shivpuri, M. Shupe, J. B. Singh, V. Sirotenko, W. Smart, A. Smith, R. P. Smith, R. Snihur, G. R. Snow, S. Snyder, J. Solomon, P. M. Sood, M. Sosebee, M. Souza, A. L. Spadafora, R. W. Stephens, M. L. Stevenson, D. Stewart, D. A. Stoianova, D. Stoker, K. Streets, M. Strovink, A. Sznajder, A. Taketani, P. Tamburello, J. Tarazi, M. Tartaglia, T. L. Taylor, J. Thompson, T. G. Trippe, P. M. Tuts, N. Varelas, E. W. Varnes, P. R. G. Virador, D. Vititoe, A. A. Volkov, A. P. Vorobiev, H. D. Wahl, G. Wang, J. Warchol, G. Watts, M. Wayne, H. Weerts, F. Wen, A. White, J. T. White, J. A. Wightman, J. Wilcox, S. Willis, S. J. Wimpenny, J. V. D. Wirjawan, J. Womersley, E. Won, D. R. Wood, H. Xu, R. Yamada, P. Yamin, C. Yanagisawa, J. Yang, T. Yasuda, C. Yoshikawa, S. Youssef, J. Yu, Y. Yu, D. H. Zhang, Q. Zhu, Z. H. Zhu, D. Zieminska, A. Zieminski, E. G. Zverev, and A. Zylberstejn
Subjects: Physics, Particle physics, Right handed, Tevatron, General Physics and Astronomy, Electron, Lower limit, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Fermilab, Neutrino, Collider, Boson
Abstract: We report on a search for right-handed W bosons (W R ) with mass greater than 200GeV/c 2 . We used data collected with the D0 detector at the Fermilab Tevatron pp collider at √s=1.8TeV to search for W R decays into an electron and a massive right-handed neutrino W R ± >e ± N R . Using the inclusive electron data, we set mass limits independent of the N R decay: m W R >650GeV/c 2 and m W R >720GeV/c 2 at the 95% confidence level, valid for m N R W R and mN R «m W R , respectively. The latter also represents a new lower limit on the mass of a heavy left-handed W boson (W') decaying into ev. In addition, limits on mWR valid for larger values of the N R mass are obtained assuming that NR decays to an electron and two jets.
Published: 1996
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206. IMPLEMENTATION of an AUTOMATED REAL-TIME STATISTICAL PROCESS CONTROLLER

Author: Z. Chang, Jinglu Tan, and F. Hsieh
Subjects: Measure (data warehouse), Computer science, business.industry, General Chemical Engineering, Sample (statistics), Control engineering, Statistical process control, Automation, Control theory, Product (mathematics), State (computer science), Shewhart individuals control chart, business, Food Science
Abstract: Through a simple application, this research demonstrates the potential and procedure of applying computer vision and control techniques in developing automated real-time statistical process controllers (SPC). A computer vision system was developed to sample and measure quality variables (area, length, and width) of an extruded food product. Shewhart control charts were used to monitor the state of statistical control. Corrective actions were determined by using a PI control algorithm to minimize the product size variation caused by material inconsistency in moisture content. the system was implemented and tested. Considerable improvement was achieved in product size uniformity.
Published: 1996
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207. Search forW̃1Z̃2Production via Trilepton Final States inpp¯Collisions ats=1.8TeV

Author: D. Buchholz, M. Marx, P. Tamburello, T. Huehn, Heng Xu, A. Baden, R. K. Shivpuri, J. A. Wightman, A. M. Smith, G. C. Blazey, N. Grossman, D. R. Claes, R. Yamada, P. Bloom, D. Fein, Gregory R Snow, D. Chakraborty, C. Cretsinger, J. Drinkard, M. Strovink, E. James, M. Bhattacharjee, S. H. Ahn, M. Tartaglia, N. Amos, K. Genser, N. I. Bojko, Orin I. Dahl, John Rutherfoord, J. Borders, S. Margulies, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, Rajendran Raja, C. Murphy, P.F. Ermolov, Kaushik De, J. Jaques, G. Eppley, E. Amidi, Matthew Jones, J. V.D. Wirjawan, N. N. Biswas, Dongliang Zhang, J. Z.Y. Jiang, J. R. T. de Mello Neto, Don Lincoln, D. Edmunds, E. Neis, L. T. Goss, S. Chopra, C. T. Murphy, S. M. Chang, Robert Hirosky, A. Bischoff, Erich Varnes, J. F. Glicenstein, A. V. Kostritskiy, Sissel Hansen, Brad Abbott, J. M. De Miranda, V. S. Burtovoi, R. Astur, M. Abolins, R. J. Madaras, D. Pušeljić, E. Flattum, Raymond Brock, H. da Motta, G. Finocchiaro, J. G.R. Lima, James C. Green, K. S. Hahn, D. Cutts, S. Protopopescu, E. A. Kozlovski, Greg Landsberg, S. Lami, T. L. Geld, J. Womersley, Boaz Klima, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, D. Nesic, A. S. Ito, Stephen Wimpenny, Andre Sznajder, R. Demina, W. Y. Chen, W. G. Cobau, Ulrich Heintz, J. T. White, H. D. Wahl, M. H.G. Souza, P. Mooney, Gilvan Alves, J. Cochran, M. Sosebee, S. Fahey, V. Oguri, M. A. Shupe, F. Borcherding, T. Marshall, M. D. Peters, H. E. Montgomery, K. Bazizi, D. Norman, Hui Li, S. A. Jerger, N. Parua, Randy Ruchti, C. Klopfenstein, T.R. McMahon, M. Paterno, M. L. Stevenson, Darien Wood, Cecilia Elena Gerber, M. Diesburg, S. Durston-Johnson, E. Oltman, Sándor Lökös, Nicholas John Hadley, George R. Kalbfleisch, D. Owen, S. Willis, M. Pang, J. Yang, J. Alitti, G. Guglielmo, J. Warchol, S. Blessing, Paolo Franzini, J. Tarazi, J. Bantly, Jing Li, N. Denisenko, Sarah Catherine Eno, H. L. Melanson, P. Z. Quintas, J. M. Hauptman, Scott Snyder, J. S. Hoftun, J. N. Butler, B. May, S. Reucroft, V. S. Narasimham, V. M. Podstavkov, L. Oesch, N. K. Mondal, Elizabeth Gallas, L. A. Markosky, H. Jostlein, Vyacheslav Klyukhin, W. X. Gu, H. T. Diehl, A. N. Galyaev, R. Hatcher, M. Fortner, C. Yoshikawa, F. Nang, M. Nicola, P. D. Grannis, H. Piekarz, Richard B. Lipton, Ying Li, S. Krzywdzinski, T. Yasuda, B. Gobbi, J. Perkins, S. K. Kim, Yu. Pischalnikov, V. I. Kochetkov, T. L. Taylor, F. Wen, E. W. Anderson, Andrew White, W. M. Smart, A. A. Mayorov, Jianming Qian, J. Wilcox, V. Sirotenko, K. Denisenko, J. H. Christenson, D. Stewart, Brajesh C Choudhary, M. Demarteau, A. Zylberstejn, Sebastien Jonathan Kahn, S. N. Gurzhiev, A. Boehnlein, O. V. Eroshin, Jan M. Guida, P. M. Sood, David H. Adams, B. Gibbard, M. K. Fatyga, T. G. Trippe, G.E. Forden, Phillip Gutierrez, H. Greenlee, Andrew Brandt, R. Engelmann, H. Johnstad, S. Feher, Heriberto Castilla-Valdez, P. Grudberg, Y. E. Gutnikov, Liu Chen, T. Fahland, W. E. Cooper, A. D. Bross, T. Heuring, R. D. Schamberger, S. C. Loken, Ting Hu, J. Kourlas, J. Sculli, R.E. Avery, Sharon Hagopian, H.E. Miettinen, S. Glenn, J. McKinley, A. Zieminski, Peter Nemethy, J. Ellison, Nikos Varelas, T. Hu, A. K.A. Maciel, D. A. Stoianova, Wagner Carvalho, Allen Mincer, John Hobbs, Quing Zhu, L. Lueking, C. S. Mishra, A. Klatchko, P. A. Rapidis, M. R. Adams, Young-Sang Yu, S. Fuess, M. Mohammadi-Baarmand, S. H. Aronson, Shuichi Kunori, K. A. Johns, P. Padley, N. A. Roe, S. Rusin, B. Baldin, N.V. Mokhov, Vasken Hagopian, Jong-Sung Yu, Alexey Volkov, M. Chung, S. Y. Jun, Alexander Lincoln Read, D. Vititoe, Joan A. Guida, R. Hernández-Montoya, R. J. Genik, A. P. Heinson, H. Weerts, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, G. Di Loreto, R. E. Hall, J. L. González Solís, Hiroaki Aihara, B. Gómez, Z. H. Zhu, Y. Ducros, D. Denisov, C. Boswell, S. Abachi, P. M. Tuts, Meenakshi Narain, Srinivasan Rajagopalan, Thomas Ferbel, A. Peryshkin, R. Partridge, Suman Bala Beri, H. A. Neal, H. C. Shankar, A. Narayanan, M. Goforth, J. B. Singh, Tong Hu, A. L. Spadafora, M.K. Fatyga, P. I. Goncharov, W. Guryn, B. S. Acharya, C. L. Kim, G. Álvarez, D. Hedin, Victor Daniel Elvira, D. Casey, S. Youssef, Robert J. McCarthy, J. Kotcher, D.R. Green, J. Balderston, T. Joffe-Minor, P. C. Bhat, F. Lobkowicz, C. Yanagisawa, Eunil Won, N. Graf, H. E. Fisk, T. Rockwell, Iain Alexander Bertram, R. L. Dixon, K. Streets, Vipin Bhatnagar, Michael Rijssenbeek, J. Solomon, G. Griffin, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, B. I. Klochkov, C. K. Jung, V. A. Bezzubov, T. McKibben, M. V. S. Rao, J. P. Negret, R. P. Smith, C. H. Park, H. S. Mao, Y. Y. Shao, Harrison Prosper, J. Bendich, B. G. Pope, G. Wang, Alberto Santoro, H. Haggerty, Y. Fisyak, J. Featherly, V. Glebov, Marvin Johnson, A. L. Lyon, A. V. Kozelov, P. Rubinov, R. W. Stephens, D. P. Stoker, M. Mudan, Elizaveta Shabalina, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, A. Taketani, Y. M. Park, A. Leflat, M. I. Martin, J. S. Kang, P. Yamin, H. Johari, V. Balamurali, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, A. Kernan, A. Jonckheere, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, J. F. Lebrat, I. Adam, K. W. Merritt, J. F. Bartlett, Robert Kehoe, Yanwen Liu, Robert Snihur, M. L. Kelly, S. R. Dugad, R. Markeloff, Howard Gordon, K. C. Frame, O. Ramirez, L. T. Kerth, S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, and Sergey Chekulaev
Subjects: Physics, Particle physics, Pair production, Chargino, Luminosity (scattering theory), law, Neutralino, Tevatron, General Physics and Astronomy, Fermilab, Collider, law.invention, Minimal Supersymmetric Standard Model
Abstract: We have searched for associated production of the lightest chargino W 1 and next-to-lightest neutralino Z 2 of the minimal supersymmetric standard model in pp collisions at √s=1.8 TeV using the D0 detector at the Fermilab Tevatron collider. Data corresponding to an integrated luminosity of 12.5±0.7pb -1 were examined for events containing three isolated leptons. No evidence for W 1 Z 2 pair production was found. Limits on s(W 1 Z 2 )B(W 1 →lνZ 1 )B(Z 2 →llZ 1 ) are presented.
Published: 1996
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208. Search for Light Top Squarks inpp¯Collisions at√s=1.8TeV

Author: G. Finocchiaro, M. Abolins, S. Durston-Johnson, P. Mooney, M. Nicola, R. Snihur, N. Varelas, N. Denisenko, S. Reucroft, F. Borcherding, S. M. Chang, N. K. Mondal, H. T. Diehl, A. Boehnlein, Andrew White, P. M. Sood, M. Mohammadi-Baarmand, J. Ellison, A. Goldschmidt, C. Yoshikawa, R. L. McCarthy, J. Bendich, J. Yu, E. Oltman, C. K. Jung, P. Grudberg, Matthew Jones, D. Nešić, Haifeng Li, P. Yamin, C. L. Kim, T. McMahon, Y. E. Gutnikov, C. Klopfenstein, Hiroaki Aihara, J. Kourlas, P. I. Goncharov, W. Guryn, T. McKibben, M. V. S. Rao, D. Buchholz, S. Mani, G. Wang, P. M. Tuts, Alberto Santoro, Sarah Catherine Eno, Meenakshi Narain, Peter Nemethy, T. Fahland, R. W. Stephens, A. Peryshkin, P. Bloom, J. A. Wightman, R. J. Madaras, R. Madden, S. Krzywdzinski, Seong Keun Kim, P. Tamburello, L. Rasmussen, Peter W. Draper, John Hobbs, N. I. Bojko, Alexander Vorobiev, Heng Xu, G. Eppley, V. D. Elvira, Vyacheslav Klyukhin, W. Y. Chen, George R. Kalbfleisch, V. I. Kochetkov, Raymond Brock, Boaz Klima, C. Shaffer, J. Wilcox, A. Narayanan, D. Cullen-Vidal, Paolo Franzini, K. Genser, K. Denisenko, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, A. L. Read, Pushpalatha C Bhat, M. Mudan, B. May, Young-Sang Yu, D. Casey, V. S. Narasimham, Thomas G Trippe, W. X. Gu, M. Bhattacharjee, Ying Li, A. Baden, B. Hoeneisen, N. N. Biswas, Lee Sawyer, H. da Motta, J. G.R. Lima, D. Hedin, T. Joffe-Minor, J. Yang, D. Norman, A. A. Mayorov, M. Goforth, M. K. Fatyga, M. L. Stevenson, H. L. Melanson, P. Z. Quintas, A. Zylberstejn, G. C. Blazey, J. Featherly, A. L. Lyon, Shuichi Kunori, A. S. Ito, A. Taketani, C. Yanagisawa, S. P. Denisov, H. E. Fisk, D. Pušeljić, V. Oguri, R. Hirosky, R. Hernández-Montoya, S. Willis, M. Pang, M. Sosebee, V. Glebov, Marvin Johnson, R. Yamada, Gregory R Snow, V. M. Podstavkov, Rajendran Raja, D. Edmunds, Y. Fisyak, I. Bertram, Y. M. Park, M. Fortner, C. Murphy, S.A. Kahn, J. Solomon, A. V. Kozelov, E. Neis, S. H. Ahn, J. S. Hoftun, J. N. Butler, P. D. Grannis, H. Greenlee, J. H. Christenson, B. Gobbi, M. R. Krishnaswamy, F. Lobkowicz, S. C. Loken, J. Alitti, J. Bantly, S. Margulies, M. Demarteau, R. E. Avery, H. Piekarz, A. Klatchko, Brad Abbott, Orin I. Dahl, John Rutherfoord, J. Perkins, A. N. Galyaev, J. Warchol, S. Lami, D. Stocker, Andre Sznajder, F. Hsieh, T. Rockwell, R. L. Dixon, S. A. Jerger, T. L. Taylor, A. Leflat, P.F. Ermolov, B. I. Klochkov, C. Cretsinger, Michael Rijssenbeek, M. D. Marx, A. Bross, Mary Beth Adams, Jasvinder A. Singh, J. M. Hauptman, M. Strovink, H. D. Wahl, E. James, S. Grünendahl, N. A. Roe, S. Chopra, S. Youssef, Andrew Brandt, Ting Hu, M. D. Peters, M. Chung, H. Johnstad, V. N. Evdokimov, T. Yasuda, W. G. Cobau, M. I. Martin, J. S. Kang, Jianming Qian, Heriberto Castilla-Valdez, A. Para, V. S. Burtovoi, Sergey Chekulaev, W. E. Cooper, Gilvan Alves, G. Álvarez, E. Amidi, Serban Protopopescu, J. V.D. Wirjawan, D.S. Koltick, J. R. T. de Mello Neto, J. T. Linnemann, James C. Green, K. S. Hahn, R. Engelmann, Liu Chen, H.E. Miettinen, D. Cutts, A. Zieminski, Tong Hu, Daniel R Claes, V. A. Bezzubov, J. P. Negret, J. Kotcher, P. A. Rapidis, Robert Kehoe, A. Kernan, T. Huehn, Y. Pischalnikov, Ulrich Heintz, Greg Landsberg, H. Jöstlein, A. Jonckheere, R. P. Smith, Elizabeth Gallas, Allan G Clark, D. Fein, T. L. Geld, R. Hatcher, L. Oesch, M. Diesburg, Michael Shupe, L. T. Kerth, J. Balderston, R. Astur, N. Graf, J. Jaques, D. Owen, M. Paterno, T. Heuring, Stephan Linn, Y. Y. Shao, M.K. Fatyga, H. Johari, V. Balamurali, N. Oshima, K. Streets, Vipin Bhatnagar, Ron Lipton, J. Womersley, J. Tarazi, Harrison Prosper, R. Partridge, E. Flattum, G. Griffin, Erich Varnes, W. Smart, K. A. Johns, B. G. Pope, Nikolai Mokhov, S. Feher, Daria Zieminska, R. D. Schamberger, A. Smith, J. F. Lebrat, J. M. De Miranda, D. Lincoln, D. Stewart, S. N. Gurzhiev, C. H. Park, Eunil Won, H. S. Mao, S. Y. Jun, D. L. Adams, Brajesh C Choudhary, Elizaveta Shabalina, B. Baldin, M. H.G. Souza, Y. Ducros, H. E. Montgomery, M. L. Kelly, J. T. White, Howard Gordon, N. Grossman, C. Boswell, N. Amos, J. Borders, K. C. Frame, O. Ramirez, Dongliang Zhang, S. Abachi, Jing Li, J. Z.Y. Jiang, I. Adam, P. Rubinov, K. W. Merritt, L. T. Goss, A. L. Spadafora, J. F. Bartlett, Suman Bala Beri, Yanwen Liu, C. S. Mishra, L. Lueking, E. A. Kozlovski, G. Guglielmo, K. Bazizi, G. E. Forden, A. P. Heinson, H. Haggerty, S. Lökös, Quing Zhu, Vasken Hagopian, H. Weerts, R. E. Hall, J. L. González Solís, C. E. Gerber, S. Fuess, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, V. Sirotenko, S. Fahey, O. V. Eroshin, Phillip Gutierrez, S. Rusin, L. Markosky, Joan A. Guida, N. Parua, G. Di Loreto, D. Denisov, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, Randy Ruchti, A. Bischoff, J. F. Glicenstein, A. V. Kostritskiy, Sissel Hansen, F. Nang, J. M. Guida, Dhiman Chakraborty, Sharon Hagopian, A. K.A. Maciel, F. Wen, E. W. Anderson, Allen Mincer, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, B. Gibbard, J. Thompson, B. Gómez, Z. H. Zhu, J. Sculli, Shashikant Dugad, T. Hu, R. Demina, Stephen Wimpenny, M. A. C. Cummings, T. Marshall, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, R. K. Shivpuri, J. Drinkard, M. Tartaglia, Kaushik De, S. H. Aronson, and C. T. Murphy
Subjects: Physics, Particle physics, Top quark, Branching fraction, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, law.invention, Charm quark, Standard Model, Nuclear physics, law, Neutralino, High Energy Physics::Experiment, Fermilab, Collider
Abstract: We present a search for pair produced top squarks, the supersymmetric partners of the top quark, using the D0 detector at the Fermilab Tevatron pp collider. We consider a scenario in which the lighter of the two top squarks t 1 decays with 100% branching fraction to a charm quark and the lightest neutralino χ 1 0 yielding a signal of two acollinear jets with missing transverse energy. We observe 3 events while we expect 3.5±1.2 events from the known standard model processes. We exclude at the 95% confidence level a significant region of the m t 1 - m χ 1 0 parameter space. The highest m t 1 value we exclude is 93 GeV/c 2 with a corresponding m χ 1 0 value of 8 GeV/c 2 .
Published: 1996
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209. production in p collisions at = 1.8

Author: T. Fahland, J. Wilcox, D. Casey, H. Tong, Rajendran Raja, S. Margulies, Brad Abbott, J. Jaques, K. S. Hahn, D. Cutts, A. Zieminski, P.F. Ermolov, J. M. Hauptman, Greg Landsberg, S. Y. Jun, A. N. Galyaev, F. Wen, E. W. Anderson, M. Sosebee, M. Nicola, Ron Lipton, J. Womersley, B. Baldin, Y. Ducros, S. C. Loken, V. S. Burtovoi, M. Bhattacharjee, T. L. Geld, Natalie A. Roe, C. T. Murphy, M. Paterno, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, S. Lami, Allen Mincer, T. G. Trippe, Nikolai Mokhov, B. May, W. E. Cooper, L. P. Chen, A. Baden, S. Fuess, Daniel R Claes, Jianming Qian, J. Alitti, J. Bantly, R. Hirosky, G. C. Blazey, W. Y. Chen, S. Krzywdzinski, T. McKibben, M. V. S. Rao, N. N. Biswas, B. Gibbard, R. L. McCarthy, S. Feher, Andrew White, S. Glenn, J. McKinley, D. A. Stoianova, R. Yamada, I. Bertram, Sharon Hagopian, George R. Kalbfleisch, J. Bendich, Paolo Franzini, J. Featherly, V. S. Narasimham, V. Glebov, Alexander Vorobiev, G. Finocchiaro, S. H. Ahn, Wagner Carvalho, A. Bischoff, J. Sculli, J. F. Glicenstein, A. V. Kostritskiy, R. J. Madaras, T. McMahon, Y. E. Gutnikov, T. L. Taylor, A. K.A. Maciel, F. Lobkowicz, S. Chopra, John Rutherfoord, Brajesh C Choudhary, J. Kourlas, E. Oltman, Sissel Hansen, A. A. Mayorov, P. A. Rapidis, Heriberto Castilla-Valdez, Marvin Johnson, M. K. Fatyga, A. V. Kozelov, F. Nang, V. I. Kochetkov, Andrew Brandt, R. Engelmann, Mary Beth Adams, N. Amos, John Hobbs, J. Borders, Bobby Samir Acharya, H.E. Miettinen, P. Bloom, J. A. Wightman, S. Durston-Johnson, M. H.G. Souza, H. A. Neal, Young-Sang Yu, H. C. Shankar, B. Gobbi, J. T. Linnemann, A. Jonckheere, C. Klopfenstein, T. Rockwell, J. Drinkard, Raymond Brock, Boaz Klima, N. I. Bojko, Peter Nemethy, Dongliang Zhang, D. Vititoe, H. E. Montgomery, James C. Green, M. Tartaglia, Stephan Linn, N. Denisenko, A. Zylberstejn, J. Z.Y. Jiang, G. Eppley, M. Goforth, Y. Pischalnikov, Ulrich Heintz, W. X. Gu, D. Norman, Kaushik De, M. Mohammadi-Baarmand, S. Reucroft, R. L. Dixon, Michael Rijssenbeek, Jasvinder A. Singh, F. Borcherding, Gordon Watts, H. Jöstlein, J. Yu, S. Willis, M. Pang, R. J. Genik, C. Cretsinger, H. da Motta, J. G.R. Lima, S. H. Aronson, V. Sirotenko, N. Oshima, M. Strovink, D. P. Stoker, E. G. Zverev, H. Greenlee, T. Joffe-Minor, L. T. Goss, R. Snihur, N. Varelas, H. Johnstad, P. Padley, Alexey Volkov, Daria Zieminska, E. James, M. Diesburg, R. D. Schamberger, D. Buchholz, D. Nešić, H. Tao, James H Cochran, C. Yanagisawa, A. S. Ito, A. Klatchko, O. V. Eroshin, C. L. Kim, Hiroaki Aihara, Mitchell Wayne, H. Schellman, J. M. Kohli, S. M. Chang, A. Smith, Stephen Wimpenny, Haifeng Li, J. F. Lebrat, C. Boswell, H. E. Fisk, P. Tamburello, Heng Xu, J. S. Hoftun, J. N. Butler, P. D. Grannis, P. M. Tuts, D. Owen, T. Marshall, H. Ting, A. Bross, Phillip Gutierrez, E. A. Kozlovski, H. Piekarz, R. W. Stephens, Darien Wood, Sarah Catherine Eno, C. Murphy, Meenakshi Narain, Gilvan Alves, A. Peryshkin, R. Astur, Pushpalatha C Bhat, M. Mudan, Gregory R Snow, J. Tarazi, V. N. Evdokimov, V. D. Elvira, T. Heuring, S. Abachi, H. Haggerty, J. Thompson, B. Gómez, Z. H. Zhu, D.S. Koltick, Nicholas John Hadley, Shashikant Dugad, S. A. Jerger, R. Hernández-Montoya, C. Yoshikawa, T. Yasuda, S. Lökös, Serban Protopopescu, S. Blessing, A. Leflat, K. Denisenko, Scott Snyder, S. Youssef, R. Markeloff, A. Narayanan, M. Chung, Vyacheslav Klyukhin, Dhiman Chakraborty, Robert Kehoe, M. A.C. Cummings, B. Hoeneisen, J. Yang, R. Demina, Suman Bala Beri, A. L. Lyon, Shuichi Kunori, Ying Li, J. Balderston, Lee Sawyer, N. Parua, B. I. Klochkov, G. E. Forden, A. P. Heinson, H. S. Mao, R. E. Hall, J. L. González Solís, V. M. Podstavkov, M. Fortner, J. Perkins, J. M. Guida, M. D. Marx, H. D. Wahl, Matthew Jones, S. Igarashi, Q. Z. Li-Demarteau, D. Lincoln, Eunil Won, A. L. Read, D. Edmunds, E. Neis, Andre Sznajder, G. Wang, Alberto Santoro, Seong Keun Kim, A. Taketani, Y. M. Park, S.A. Kahn, M. Demarteau, R. E. Avery, M. D. Peters, W. G. Cobau, M. I. Martin, J. S. Kang, L. Oesch, P. Yamin, J. Solomon, S. Mani, T. Huehn, H. Johari, D. Hedin, V. Balamurali, B. G. Pope, D. Fein, Erich Varnes, R. Madden, J. M. De Miranda, L. Rasmussen, Randy Ruchti, Elizaveta Shabalina, Peter W. Draper, N. Grossman, V. A. Bezzubov, J. P. Negret, J. T. White, Jing Li, R. P. Smith, C. S. Mishra, Michael Shupe, Y. Y. Shao, G. Guglielmo, M.K. Fatyga, Harrison Prosper, L. Markosky, Joan A. Guida, G. Di Loreto, D. Denisov, G. Álvarez, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, J. Kotcher, O. I. Dahl, N. Graf, H. L. Melanson, P. Z. Quintas, D. Stewart, S. N. Gurzhiev, Y. Fisyak, J. H. Christenson, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, Quing Zhu, I. Adam, P. Rubinov, K. W. Merritt, G. Griffin, J. F. Bartlett, C. H. Park, Yanwen Liu, D. L. Adams, L. Lueking, S. Fahey, K. Bazizi, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, L. T. Kerth, S. P. Denisov, P. Grudberg, V. Oguri, M. L. Stevenson, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, S. Grünendahl, J. Warchol, A. Para, Sergey Chekulaev, C. K. Jung, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, M. Abolins, P. Mooney, Elizabeth Gallas, N. K. Mondal, H. T. Diehl, R. Hatcher, A. Boehnlein, P. M. Sood, J. Ellison, A. L. Spadafora, P. I. Goncharov, W. Guryn, R. K. Shivpuri, D. Pušeljić, W. Smart, K. A. Johns, Vasken Hagopian, H. Weerts, C. E. Gerber, and P. R.G. Virador
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Tevatron, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear physics, Transverse momentum, High Energy Physics::Experiment, Production (computer science), B meson, Impact parameter, Nuclear Experiment
Abstract: We have studied J ψ production in p p collisions at s = 1.8 TeV with the DO detector at Fermilab using μ+μ− data. We have measured the inclusive J ψ production cross section as a function of J ψ transverse momentum, pT. For the kinematic range pT > 8 GeV/c and |η| σ(p p → J ψ + X) · Br ( J ψ → μ + μ − ) = 2.08 ± 0.17( stat) ± 0.46(syst) nb. Using the muon impact parameter we have estimated the fraction of J ψ mesons coming from B meson decays to be fb = 0.35 ± 0.09(stat)±0.10(syst) and inferred the inclusive b production cross section. From the information on the event topology the fraction of nonisolated J ψ events has been measured to be fnonisol = 0.64 ± 0.08(stat)±0.06(syst). We have also obtained the fraction of J ψ events resulting from radiative decays of χc states, fχ = 0.32 ± 0.07(stat)±0.07(syst). We discuss the implications of our measurements for charmonium production processes.
Published: 1996
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210. Automated Analytical System for the Examination of Protein Primary Structure

Author: S. A. Martin, J. Mark, Fred E. Regnier, Y. L. F. Hsieh, Hong Qi. Wang, and C. Elicone
Subjects: Autoanalysis, Hemeprotein, Chromatography, Ion exchange, Chemistry, Elution, Immunochemistry, Hemoglobin, Sickle, Molecular Sequence Data, Protein primary structure, Hemoglobin A, Trypsin, Mass spectrometry, Antibodies, Mass Spectrometry, Analytical Chemistry, Protein structure, Affinity chromatography, medicine, Humans, Amino Acid Sequence, Chromatography, Liquid, medicine.drug
Abstract: This paper describes an automated analytical system for the examination of protein primary structure in which (i) the target protein is first purified by immunoaffinity chromatography, (ii) subsequent chromatographic and chemical reaction steps in the sequencing process are directly coupled, (iii) buffer exchange between these unit operations is achieved while the protein is absorbed on a mixed bed of strong ion exchange sorbents, (iv) proteolysis occurs in an immobilized trypsin column having a 10-1000 fold-excess of enzyme, (v) the tryptic digest is directly transferred to a perfusion dilute capture column where it is concentrated and rapidly desalted, and (vi) peptides eluted from the dilute capture column and analytical microbore and capillary perfusion reversed-phase chromatography columns are analyzed by either single-stage mass spectrometry (MS) or tandem MS/MS. Protein structure variants were easily recognized, and in the case of hemoglobin (Hb) S, the site of variation from Hb A0 was verified.
Published: 1996
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211. Jet Production via Strongly Interacting Color-Singlet Exchange inpp¯Collisions

Author: S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, A. L. Read, C. Boswell, D. Edmunds, S. Abachi, E. Neis, Suman Bala Beri, Andre Sznajder, M. D. Peters, L. Oesch, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, C. Klopfenstein, J. Solomon, B. I. Klochkov, J. M. Hauptman, Cecilia Elena Gerber, Jianming Qian, Tong Hu, I. V. Mandrichenko, P. A. Rapidis, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Bischoff, A. V. Kostritskiy, J. Bendich, A. Kernan, A. Jonckheere, Sissel Hansen, C. K. Jung, V. Oguri, R. Hernández-Montoya, Stephan Linn, A. Milder, N. N. Biswas, F. Nang, C. S. Mishra, G. Wang, Alberto Santoro, C. Murphy, N. Oshima, G. Guglielmo, Daria Zieminska, Sharon Hagopian, W. Y. Chen, R. D. Schamberger, A. Smith, J. F. Lebrat, S. Protopopescu, A. K.A. Maciel, Vasken Hagopian, H. Weerts, George R. Kalbfleisch, P. Padley, D. Casey, Alexey Volkov, James H Cochran, Paolo Franzini, P. I. Goncharov, V. S. Narasimham, Thomas G Trippe, W. X. Gu, R. K. Shivpuri, S. Krzywdzinski, W. Guryn, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, P. Yamin, A. A. Mayorov, V. I. Kochetkov, S. Fuess, R. Snihur, B. Gómez, Z. H. Zhu, M. Abolins, Shashikant Dugad, N. Varelas, M. K. Fatyga, S. Mani, J. Drinkard, Rajendran Raja, M. Tartaglia, P. Mooney, M. Nicola, A. Zylberstejn, H. Greenlee, R. Demina, S. M. Chang, R. Madden, S. C. Loken, E. Amidi, N. K. Mondal, H. T. Diehl, L. Rasmussen, Peter W. Draper, A. Boehnlein, P. M. Sood, Sun Kee Kim, Brad Abbott, A. Bross, M. Bhattacharjee, V. Sirotenko, Kaushik De, Pushpalatha C Bhat, M. Mudan, J. V.D. Wirjawan, J. R. T. de Mello Neto, J. Ellison, F. Wen, E. W. Anderson, B. May, O. V. Eroshin, Phillip Gutierrez, J. Yu, R. L. McCarthy, B. Hoeneisen, Lee Sawyer, Allan G Clark, S. H. Aronson, P. Bloom, J. A. Wightman, S. Fahey, R. Hirosky, Matthew Jones, Allen Mincer, A. Taketani, N. Parua, Ting Hu, T. Huehn, B. Gobbi, N. I. Bojko, J. M. Guida, M.K. Fatyga, C. L. Kim, D. Fein, Y. M. Park, Dhiman Chakraborty, S.A. Kahn, Hiroaki Aihara, Elizabeth Gallas, R. Hatcher, H. L. Melanson, P. Z. Quintas, A. Zieminski, K. S. Hahn, M. Demarteau, R. E. Avery, D. Cutts, J. S. Kang, Erich Varnes, P. M. Tuts, R. W. Stephens, Greg Landsberg, Peter Nemethy, G. Eppley, J. M. De Miranda, S. Rusin, Y. Fisyak, J. H. Christenson, B. Gibbard, T. L. Taylor, V. A. Bezzubov, L. T. Kerth, S. Igarashi, T. L. Geld, J. P. Negret, R. P. Smith, M. L. Stevenson, L. Markosky, Joan A. Guida, Soon Yung Jun, N. Grossman, J. G.R. Lima, J. Sculli, Michael Shupe, M. Paterno, Jasvinder A. Singh, Y. Pischalnikov, Ulrich Heintz, G. Di Loreto, H. Jöstlein, P. R. G. Virador, Q. Z. Li-Demarteau, Y. Y. Shao, T. Hu, F. Borcherding, A. S. Ito, A. Goldschmidt, W. Smart, K. A. Johns, J. S. Hoftun, J. N. Butler, M. Diesburg, H. Johnstad, Laurent Chevalier, K. Streets, Vipin Bhatnagar, M. H.G. Souza, D. Owen, Stephen Wimpenny, M. A. C. Cummings, E. Oltman, T. Yasuda, R. Partridge, Harrison Prosper, D. Denisov, T. McKibben, J. Teiger, Randy Ruchti, E. Flattum, P. D. Grannis, H. Piekarz, J. Tarazi, Heriberto Castilla-Valdez, T. Marshall, G. Griffin, H. E. Montgomery, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, M. V. S. Rao, Sarah Catherine Eno, G. E. Forden, A. P. Heinson, Darien Wood, C. H. Park, Nicholas John Hadley, H. S. Mao, Vyacheslav Klyukhin, D. L. Adams, Alexander Vorobiev, Ying Li, S. Blessing, Scott Snyder, R. Markeloff, N. Amos, R. E. Hall, D. Stewart, S. N. Gurzhiev, J. L. González Solís, A. Baden, G. C. Blazey, D. P. Stoker, R. Astur, M. D. Marx, R. J. Madaras, S. Margulies, T. Fahland, R. Yamada, J. Li, S. Lami, S. H. Ahn, A. Pluquet, H. D. Wahl, P.F. Ermolov, J. Wilcox, T. Heuring, Orin I. Dahl, John Rutherfoord, G. Álvarez, B. Baldin, Mary Beth Adams, D. Hedin, V. S. Burtovoi, Quing Zhu, Y. Ducros, J. Kotcher, I. Bertram, James C. Green, N. Graf, Bruno Mansoulie, F. Lobkowicz, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, D. Buchholz, P. Tamburello, V. N. Evdokimov, J. Warchol, D.S. Koltick, Heng Xu, J. T. Linnemann, Gregory R Snow, B. G. Pope, Victor Daniel Elvira, S. Youssef, Elizaveta Shabalina, Robert Kehoe, J. Balderston, D. Lincoln, Eunil Won, J. T. White, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, Ph. Mangeot, Raymond Brock, Boaz Klima, H. Johari, V. Balamurali, D. Norman, S. Willis, M. Pang, A. N. Galyaev, W. E. Cooper, Daniel R Claes, N. A. Roe, S. Chopra, M. Chung, K. Denisenko, A. L. Lyon, Shuichi Kunori, J. Jaques, Ron Lipton, J. Womersley, J. Featherly, Nikolai Mokhov, V. Glebov, Marvin Johnson, S. Feher, A. V. Kozelov, Brajesh C Choudhary, Bobby Samir Acharya, H. A. Neal, C. T. Murphy, H. C. Shankar, M. Goforth, G. Finocchiaro, C. Cretsinger, S. Durston-Johnson, M. Strovink, E. James, A. Klatchko, N. Denisenko, S. Reucroft, C. Yoshikawa, Gilvan Alves, Andrew White, P. Grudberg, T. McMahon, Y. E. Gutnikov, J. Kourlas, John Hobbs, Young-Sang Yu, D. Pušeljić, S. P. Denisov, M. R. Krishnaswamy, M. Mohammadi-Baarmand, F. Hsieh, S. Grünendahl, D. Nešić, A. Para, Sergey Chekulaev, Haifeng Li, I. Adam, P. Rubinov, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, L. Lueking, Meenakshi Narain, A. Peryshkin, K. Bazizi, A. Narayanan, M. L. Kelly, M. Sosebee, Howard Gordon, K. C. Frame, O. Ramirez, J. Alitti, J. Bantly, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, J. Yang, V. M. Podstavkov, M. Fortner, J. Perkins, J. Borders, Dongliang Zhang, J. Z.Y. Jiang, L. T. Goss, E. A. Kozlovski, H. Haggerty, and S. Lökös
Subjects: Quantum chromodynamics, Physics, Particle physics, High Energy Physics::Phenomenology, Electroweak interaction, Tevatron, General Physics and Astronomy, Multiplicity (mathematics), Jet (particle physics), law.invention, Nuclear physics, law, High Energy Physics::Experiment, Production (computer science), Rapidity, Collider
Abstract: A study of the particle multiplicity between jets with large rapidity separation has been performed using the D\O\ detector at the Fermilab Tevatron $p\bar{p}$ Collider operating at $\sqrt{s}=1.8$\,TeV. A significant excess of low-multiplicity events is observed above the expectation for color-exchange processes. The measured fractional excess is $1.07 \pm 0.10({\rm stat})~{ + 0.25}_{- 0.13}({\rm syst})\%$, which is consistent with a strongly-interacting color-singlet (colorless) exchange process and cannot be explained by electroweak exchange alone. A lower limit of $0.80\%$ (95\% C.L.) is obtained on the fraction of dijet events with color-singlet exchange, independent of the rapidity gap survival probability.
Published: 1996
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212. Modeling of flow in a single screw extruder

Author: F. Hsieh and Y. Li
Subjects: Flow (mathematics), Chemistry, Plastics extrusion, Newtonian fluid, Thermodynamics, Boundary value problem, Mechanics, Polymer engineering, Isothermal process, Food Science
Abstract: A new analytical solution of an isothermal, Newtonian flow in a single screw extruder with a finite channel is developed with the actual boundary conditions encountered. Down channel velocity distributions are presented in three-dimensional plots. The boundary conditions, velocity distributions, and screw characteristics predicted by the new solution are tested using the experimental data from published literature (Choo et al ., 1980, Polymer Engineering and Science, 20 , 349-56; Griffith, 1962, Industrial and Engineering Chemistry Fundamentals, 1 , 180-7). The results are found to be more accurate than existing theories (Rowell & Finlayson, 1922, Engineering, 126 , 249-87; Tadmor & Gogos, 1979, Principles of Polymer Processing, Wiley; Rauwendaal, 1986, Polymer Extrusion, Hanser).
Published: 1996
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213. A detailed study of plastic scintillating strips with axial wavelength shifting fiber and VLPC readout

Author: F. Hsieh, E. Neis, L. Oesch, S. Margulies, H. A. Neal, D. A. Averill, N. Amos, Haifeng Li, M. R. Adams, M. Chung, T. Yasuda, Jianming Qian, Michael Rijssenbeek, P. Baringer, and D. Lincoln
Subjects: Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, business.industry, Detector, Attenuation length, Cosmic ray, STRIPS, Scintillator, Signal, law.invention, Wavelength, Optics, law, Optoelectronics, business, Instrumentation
Abstract: The physical properties of a plastic scintillating strip with axial wavelength shifting fiber and VLPC readout have been extensively investigated. Different construction techniques were tried and 18 variations on the basic detector were studied in a cosmic ray test stand. Over 15 000 cosmic rays were recorded per scintillating strip. The high event statistics and the greatly improved photostatistics provided by the VLPC readout allowed us to study the system in much more detail than has been done previously. Results on light yields, signal uniformity, attenuation length, edge effects, and crosstalk are presented. Typical light yields were 18 photons per mm of scintillator traversed for minimum ionizing particles. The detectors had very uniform response at different positions along the strip.
Published: 1995
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214. Second Generation Leptoquark Search inpp¯Collisions ats=1.8TeV

Author: N. A. Roe, S. Chopra, M. Chung, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, P. A. Rapidis, S. P. Denisov, M. R. Krishnaswamy, B. May, F. Hsieh, S. Grünendahl, M. L. Kelly, Howard Gordon, A. Para, K. C. Frame, O. Ramirez, Sergey Chekulaev, Raymond Brock, Boaz Klima, A. Kernan, A. Jonckheere, Stephan Linn, I. Adam, P. Rubinov, T. Huehn, D. Norman, N. Oshima, K. Streets, Vipin Bhatnagar, S. Youssef, A. Goldschmidt, K. W. Merritt, A. L. Spadafora, Elizabeth Gallas, S. Willis, C. S. Mishra, G. Guglielmo, J. F. Bartlett, D. Neić, Yanwen Liu, L. Lueking, C. Cretsinger, M. Pang, R. L. McCarthy, M. D. Marx, H. D. Wahl, Daria Zieminska, B. Gobbi, R. Partridge, E. Flattum, G. Griffin, R. Hatcher, Vasken Hagopian, M. Strovink, E. James, J. Bendich, S. Rusin, H. Weerts, R. D. Schamberger, A. N. Galjaev, A. Smith, J. F. Lebrat, Y. Pischalnikov, Ulrich Heintz, Robert Kehoe, D. Fein, Jasvinder A. Singh, L. Markosky, H. Jöstlein, C. H. Park, M. Diesburg, R. J. Madaras, H. S. Mao, G. Di Loreto, J. Balderston, Peter Nemethy, K. Denisenko, N. Parua, T. Fahland, D. L. Adams, A. Baden, G. C. Blazey, F. Wen, E. W. Anderson, W. E. Cooper, H. Johnstad, T. Yasuda, Matthew Jones, D. Hedin, D. Denisov, J. Teiger, Srinivasan Rajagopalan, G. Eppley, Daniel R Claes, J. Yang, D. Owen, J. Wilcox, W. Smart, K. A. Johns, Thomas Ferbel, W. Y. Chen, Dan Green, J. G.R. Lima, R. Astur, Erich Varnes, J. M. De Miranda, S. Igarashi, P. R. G. Virador, J. Tarazi, G. Wang, Alberto Santoro, T. Heuring, Q. Z. Li-Demarteau, I. Bertram, Bruno Mansoulie, A. S. Ito, A. L. Lyon, Shuichi Kunori, D. Lincoln, Eunil Won, P. I. Goncharov, R. Yamada, George R. Kalbfleisch, W. Guryn, V. M. Podstavkov, M. Sosebee, F. Lobkowicz, Seong Keun Kim, Randy Ruchti, Paolo Franzini, V. S. Narasimham, S. Fuess, I. V. Mandrichenko, S. H. Ahn, Allen Mincer, L. Z. Wang, Thomas G Trippe, T. Rockwell, V. Oguri, Christina Gao, R. Hernández-Montoya, A. Milder, W. X. Gu, R. L. Dixon, C. T. Murphy, Michael Rijssenbeek, Sharon Hagopian, C. Murphy, H. L. Melanson, P. Z. Quintas, M. Fortner, J. M. Hauptman, J. Alitti, Cecilia Elena Gerber, S. Fahey, A. A. Mayorov, A. K.A. Maciel, J. Bantly, N. Grossman, J. Perkins, M. K. Fatyga, M. H.G. Souza, Orin I. Dahl, John Rutherfoord, V. N. Evdokimov, J. Warchol, B. Gibbard, Jianming Qian, J. H. Christenson, G. Finocchiaro, D.S. Koltick, M. Bhattacharjee, V. Sirotenko, O. V. Eroshin, J. Sculli, V. A. Bezzubov, R. Hirosky, Mary Beth Adams, H. E. Montgomery, Jing Li, Phillip Gutierrez, J. P. Negret, R. P. Smith, S. Glenn, Tong Hu, J. McKinley, S. Durston-Johnson, J. Jaques, P. Bloom, Michael Shupe, D. A. Stoianova, J. A. Wightman, S. Krzywdzinski, Ron Lipton, Laurent Chevalier, S. Reucroft, Stephen Wimpenny, V. I. Kochetkov, N. I. Bojko, J. Womersley, T. L. Taylor, Y. S. Zhu, C. Yoshikawa, S. Gao, Andrew Brandt, G. Álvarez, R. Snihur, T. Marshall, A. Zylberstejn, Nikolai Mokhov, J. A. Guida, D. Casey, J. Wang, Harrison Prosper, Heriberto Castilla-Valdez, N. Varelas, M. L. Stevenson, S. Feher, H. Greenlee, James C. Green, R. Engelmann, Liu Chen, J. Kotcher, D. P. Stoker, Darien Wood, Allan G Clark, S. M. Chang, Nicholas John Hadley, J. S. Hoftun, J. N. Butler, A. Bross, P. D. Grannis, Brajesh C Choudhary, R. E. Lanou, D. Vititoe, A. Bischoff, A. V. Kostritskiy, M.K. Fatyga, N. Graf, H. Piekarz, S. Blessing, R. J. Genik, H.E. Miettinen, Rajendran Raja, C. Shaffer, D. Cullen-Vidal, K. Genser, Sissel Hansen, Scott Snyder, Bobby Samir Acharya, H. A. Neal, R. Markeloff, J. Yu, Serban Protopopescu, F. Nang, C. K. Jung, N. N. Biswas, H. C. Shankar, J. T. Linnemann, R. K. Shivpuri, S. C. Loken, B. Baldin, C. Boswell, M. Goforth, D. Pueljić, Y. Ducros, Gilvan Alves, Brad Abbott, C. L. Kim, C. Klopfenstein, J. Drinkard, M. Tartaglia, S. Abachi, Hiroaki Aihara, K. Bazizi, Yu Fisyak, J. M. Guida, Welathantri Gd Dharmaratna, Kaushik De, D. Stewart, S. N. Gurzhiev, Suman Bala Beri, P. M. Tuts, S. H. Aronson, P. Padley, Alexey Volkov, K. S. Hahn, D. Cutts, R. W. Stephens, Victor Daniel Elvira, M. Abolins, Dhiman Chakraborty, James H Cochran, Mitchell Wayne, P. Mooney, Y. H. Zhou, H. Schellman, J. M. Kohli, G. E. Forden, A. P. Heinson, Greg Landsberg, N. K. Mondal, H. T. Diehl, A. L. Read, J. Thompson, Quing Zhu, B. Gómez, A. Boehnlein, P. M. Sood, T. L. Geld, Z. H. Zhu, Shashikant Dugad, J. Ellison, D. Edmunds, E. Neis, M. Paterno, J. Borders, R. Demina, R. E. Hall, J. Z.Y. Jiang, M. D. Peters, L. T. Goss, M. Mohammadi-Baarmand, L. Oesch, Haifeng Li, E. A. Kozlovski, H. Haggerty, S. Lökös, D. Buchholz, Meenakshi Narain, A. Peryshkin, P. Tamburello, Heng Xu, W. A. Wenzel, L. T. Kerth, A. Narayanan, Ting Hu, B. G. Pope, Gregory R Snow, A. Zieminski, P. Yamin, N. Amos, S. Y. Jun, S. Mani, Elizaveta Shabalina, R. Madden, L. Rasmussen, Peter W. Draper, S. Margulies, S. Lami, A. Pluquet, P.F. Ermolov, Yanxi Zhang, A. Koltick, V. S. Burtovoi, J. T. White, J. Featherly, V. Glebov, Marvin Johnson, A. V. Kozelov, T. McKibben, M. V. S. Rao, Alexander Vorobiev, Pushpalatha C Bhat, M. Mudan, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, A. Taketani, Y. M. Park, S.A. Kahn, M. Demarteau, R. E. Avery, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, J. S. Kang, Ph. Mangeot, H. Johari, V. Balamurali, Andrew White, P. Grudberg, T. McMahon, Y. E. Gutnikov, J. Kourlas, John Hobbs, Young-Sang Yu, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, J. Solomon, B. I. Klochkov, F. Borcherding, E. Oltman, Sarah Catherine Eno, Vyacheslav Klyukhin, and Ying Li
Subjects: Quark, Physics, Particle physics, Physics::Instrumentation and Detectors, Branching fraction, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Particle identification, Nuclear physics, High Energy Physics::Experiment, Leptoquark, Fermilab, Neutrino, Lepton
Abstract: We report on a search for second generation scalar leptoquarks with the D0 detector at the Fermilab Tevatron pp collider at √s = 1.8 TeV. This search is based on 12.7 pb-1 of data. Second generation leptoquarks are assumed to be produced in pairs and to decay into a neutrino and quark with branching ratio β or into a neutrino and quark with branching ratio 1 - β. We obtain cross section times branching ratio limits as a function of leptoquark mass and set lower limits on the leptoquark mass at the 95% confidence level.
Published: 1995
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215. Extrusion processing of rapeseed meal for reducing glucosinolates

Author: F. Hsieh, H. E. Huff, G. P. Lardy, Monty S. Kerley, M. Liang, and S. Huang
Subjects: chemistry.chemical_compound, Ammonia, Rapeseed, Biochemistry, Chemistry, Glucosinolate, Plastics extrusion, Torque, Animal Science and Zoology, Extrusion, Specific mechanical energy, Food science, Water content
Abstract: High-glucosinolate (116 μmol g −1 ) rapeseed meal was extruded using an APV Baker MPF50/25 twin-screw extruder. The effects of screw speed (200–400 rpm), moisture content (14–20%), and ammonia concentration (0–3%) on die pressure, specific mechanical energy, torque, product temperature, and glucosinolate reduction were investigated. Increasing screw speed increased die pressure and specific mechanical energy, but reduced torque and product temperature. This decreased the glucosinolate reduction. Increasing moisture content decreased torque, die pressure, product temperature, specific mechanical energy, and glucosinolate reduction. Adding ammonia increased product temperature, but decreased torque, die pressure, and specific mechanical energy. The maximum reduction in the glucosinolate content (67%) occurred at the 2% ammonia level and screw speed of 200 rpm.
Published: 1995
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216. Study of the Strong Coupling Constant UsingW+JetProcesses

Author: J. Drinkard, Jianming Qian, M. Tartaglia, B. May, Kaushik De, I. Bertram, Tong Hu, Bruno Mansoulie, S. H. Aronson, M. Mohammadi-Baarmand, S. Fahey, F. Borcherding, J. Yu, B. Gobbi, F. Lobkowicz, C. L. Kim, Hiroaki Aihara, P. I. Goncharov, P. M. Tuts, R. W. Stephens, W. Guryn, Haifeng Li, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, W. Y. Chen, George R. Kalbfleisch, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, W. X. Gu, D. Buchholz, A. A. Mayorov, E. Oltman, M. K. Fatyga, Jasvinder A. Singh, Meenakshi Narain, A. Peryshkin, H. Johnstad, T. Yasuda, J. Jaques, S. Rusin, P. Yamin, S. Krzywdzinski, J. Bendich, P. Tamburello, Heng Xu, V. I. Kochetkov, G. Eppley, S. Mani, B. Gibbard, Ron Lipton, V. N. Evdokimov, J. Warchol, D.S. Koltick, Sarah Catherine Eno, L. Markosky, A. Narayanan, M. Bhattacharjee, J. Sculli, A. Zylberstejn, M. L. Kelly, Howard Gordon, K. C. Frame, Sharon Hagopian, J. Womersley, C. Cretsinger, O. Ramirez, M. Strovink, R. Madden, L. Rasmussen, G. Wang, Alberto Santoro, Gregory R Snow, P. Padley, Peter W. Draper, A. K.A. Maciel, Pushpalatha C Bhat, Alexey Volkov, M. Sosebee, Elizabeth Gallas, H. Greenlee, T. Hu, Y. Pischalnikov, Ulrich Heintz, R. Astur, T. Heuring, J. G.R. Lima, H. Jöstlein, E. James, Laurent Chevalier, Seong Keun Kim, G. Di Loreto, V. A. Bezzubov, Vyacheslav Klyukhin, Nikolai Mokhov, J. P. Negret, R. Hirosky, Ying Li, S. P. Denisov, R. P. Smith, James H Cochran, R. Hatcher, W. A. Wenzel, L. T. Kerth, M. A.C. Cummings, J. Alitti, Stephen Wimpenny, J. Bantly, B. Hoeneisen, Lee Sawyer, Mitchell Wayne, A. Bross, C. K. Jung, M. R. Krishnaswamy, H. Schellman, J. M. Kohli, S. Feher, B. Baldin, M. Diesburg, A. Baden, Michael Shupe, F. Hsieh, D. Owen, T. Marshall, Gilvan Alves, D. Pueljić, T. Joffe-Minor, G. C. Blazey, C. Yanagisawa, J. Tarazi, M. H.G. Souza, Darien Wood, Nicholas John Hadley, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, S. Grünendahl, A. Para, J. Thompson, Sergey Chekulaev, B. Gómez, Z. H. Zhu, W. Smart, K. A. Johns, T. L. Taylor, R. Yamada, S. H. Ahn, Y. Y. Shao, Serban Protopopescu, J. Wang, Harrison Prosper, A. Taketani, Y. M. Park, Brajesh C Choudhary, S.A. Kahn, H. E. Montgomery, S. A. Jerger, Raymond Brock, Boaz Klima, A. S. Ito, Shashikant Dugad, M. D. Marx, H. D. Wahl, S. Blessing, Y. Ducros, H. E. Fisk, J. Solomon, M. Demarteau, R. E. Avery, I. Adam, P. Rubinov, D. Denisov, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, D. P. Stoker, Orin I. Dahl, John Rutherfoord, Scott Snyder, R. Markeloff, M. Abolins, R. Snihur, N. Varelas, R. Demina, A. Leflat, S. Fuess, K. W. Merritt, N. Amos, S. Margulies, S. Lami, A. L. Spadafora, G. E. Forden, A. P. Heinson, A. Pluquet, Mary Beth Adams, P. A. Rapidis, W. G. Cobau, M. I. Martin, C. Shaffer, D. Cullen-Vidal, K. Genser, V. Oguri, P. Mooney, S. M. Chang, Heriberto Castilla-Valdez, K. Denisenko, J. F. Bartlett, N. A. Roe, S. Chopra, M. Chung, P.F. Ermolov, Yanxi Zhang, D. Norman, D. Neić, Yanwen Liu, F. Wen, A. Kernan, A. Jonckheere, N. N. Biswas, E. W. Anderson, N. K. Mondal, H. T. Diehl, J. Yang, Victor Daniel Elvira, L. Lueking, B. I. Klochkov, V. Sirotenko, Stephan Linn, R. E. Hall, V. S. Burtovoi, J. S. Kang, J. L. González Solís, James C. Green, A. Boehnlein, P. M. Sood, P. Bloom, J. A. Wightman, J. Ellison, A. L. Lyon, Shuichi Kunori, M. Mudan, K. Bazizi, R. J. Madaras, N. Oshima, K. S. Hahn, T. Huehn, Daria Zieminska, S. Willis, M. Pang, N. I. Bojko, O. V. Eroshin, J. Kotcher, J. Featherly, D. Cutts, V. M. Podstavkov, R. D. Schamberger, A. Smith, D. Fein, Allen Mincer, G. Lvarez, J. F. Lebrat, V. Glebov, Marvin Johnson, A. V. Kozelov, S. Gao, Andrew White, Greg Landsberg, C. T. Murphy, Erich Varnes, D. Stewart, S. N. Gurzhiev, J. M. De Miranda, M. Fortner, Phillip Gutierrez, M. L. Stevenson, T. L. Geld, A. Bischoff, J. Perkins, P. Grudberg, T. McMahon, M. Nicola, E. Amidi, J. V.D. Wirjawan, Y. E. Gutnikov, Ph. Mangeot, A. V. Kostritskiy, M. Paterno, J. R. T. de Mello Neto, Allan G Clark, D. Hedin, G. Finocchiaro, N. Graf, J. Kourlas, N. Grossman, Sissel Hansen, J. M. Guida, J. S. Hoftun, J. N. Butler, P. D. Grannis, John Hobbs, F. Nang, H. Piekarz, Dhiman Chakraborty, Quing Zhu, Jing Li, A. N. Galyaev, S. Durston-Johnson, S. Youssef, C. S. Mishra, Young-Sang Yu, M.K. Fatyga, N. Denisenko, S. Reucroft, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, C. Yoshikawa, Robert Kehoe, M. Goforth, J. Balderston, R. L. McCarthy, J. Borders, G. Guglielmo, C. Klopfenstein, D. Lincoln, Eunil Won, H. L. Melanson, P. Z. Quintas, W. E. Cooper, Daniel R Claes, Dongliang Zhang, A. Klatchko, J. Z.Y. Jiang, I. V. Mandrichenko, Vasken Hagopian, Y. Fisyak, J. H. Christenson, H. Johari, V. Balamurali, R. Hernández-Montoya, A. Milder, L. T. Goss, Peter Nemethy, B. G. Pope, H. Weerts, C. Murphy, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, G. Griffin, N. Parua, C. H. Park, Elizaveta Shabalina, H. S. Mao, Matthew Jones, D. L. Adams, E. A. Kozlovski, J. T. White, H. Haggerty, S. Lökös, S. Igarashi, P. R. G. Virador, T. McKibben, M. V. S. Rao, Q. Z. Li-Demarteau, Alexander Vorobiev, Randy Ruchti, C. Boswell, S. Abachi, Suman Bala Beri, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, A. L. Read, D. Edmunds, E. Neis, Andre Sznajder, M. D. Peters, L. Oesch, A. Goldschmidt, T. Fahland, J. Wilcox, Ting Hu, A. Zieminski, S. Y. Jun, J. A. Guida, D. Casey, Rajendran Raja, S. C. Loken, Brad Abbott, Welathantri Gd Dharmaratna, J. M. Hauptman, Cecilia Elena Gerber, and R. K. Shivpuri
Subjects: Physics, Quantum chromodynamics, Coupling constant, Particle physics, Computer Science::Information Retrieval, Hadron, Tevatron, General Physics and Astronomy, Order (ring theory), Parton, Jet (particle physics), Coupling (probability), Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The ratio of the number of {ital W}+1 jet to {ital W}+0 jet events is measured with the D0 detector using data from the 1992--93 Tevatron Collider run. For the {ital W}{r_arrow}{ital e}{nu} channel with a minimum jet {ital E}{sub {ital T}} cutoff of 25 GeV, the experimental ratio is 0.065{plus_minus}0.003(stat){plus_minus}0.007(syst). Next-to-leading order QCD predictions for various parton distributions agree well with each other and are all over 1 standard deviation below the measurement. Varying the strong coupling constant {alpha}{sub {ital s}} in both the parton distributions and the partonic cross sections simultaneously does not remove this discrepancy. {copyright} {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.
Published: 1995
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217. Transverse energy distributions within jets in p collisions at =1.8

Author: J. G.R. Lima, A. S. Ito, G. Álvarez, N. A. Roe, J. Kotcher, C. T. Murphy, W. Y. Chen, G. Finocchiaro, George R. Kalbfleisch, Paolo Franzini, V. S. Narasimham, J. Featherly, V. Glebov, Marvin Johnson, S. Chopra, M. Chung, W. A. Wenzel, Thomas G Trippe, W. X. Gu, N. Parua, A. V. Kozelov, A. A. Mayorov, Matthew Jones, M. K. Fatyga, F. Wen, S. Durston-Johnson, R. Hatcher, R. K. Shivpuri, Sharon Hagopian, A. K.A. Maciel, A. Para, J. A. Guida, D. Casey, J. Drinkard, Allen Mincer, Kaushik De, M. Mohammadi-Baarmand, S. H. Aronson, C. K. Jung, N. Denisenko, I. V. Mandrichenko, S. A. Jerger, S. Reucroft, C. Yoshikawa, C. Cretsinger, M. Strovink, E. James, S. Igarashi, P. R. G. Virador, K. S. Hahn, D. Nešić, R. Hernández-Montoya, D. Cutts, B. May, S. Krzywdzinski, A. Milder, C. Murphy, D. Edmunds, V. I. Kochetkov, Gilvan Alves, E. W. Anderson, N. Amos, J. Jaques, E. Neis, R. Snihur, N. Varelas, Q. Z. Li-Demarteau, Haifeng Li, P. Padley, A. Leflat, Ron Lipton, Alexey Volkov, K. Streets, Vipin Bhatnagar, B. Gobbi, A. Zylberstejn, M. Bhattacharjee, J. M. Hauptman, R. Partridge, E. Flattum, Rajendran Raja, W. G. Cobau, M. I. Martin, Greg Landsberg, G. Griffin, J. Womersley, James H Cochran, Cecilia Elena Gerber, Mitchell Wayne, H. Schellman, J. M. Kohli, S. M. Chang, Randy Ruchti, H. Greenlee, S. Youssef, J. Borders, J. Thompson, Jasvinder A. Singh, J. Yu, M. D. Marx, H. D. Wahl, R. L. McCarthy, K. Denisenko, J. S. Kang, R. Hirosky, S. Feher, A. Bross, S. C. Loken, Meenakshi Narain, B. Gómez, Z. H. Zhu, A. Peryshkin, Shashikant Dugad, C. H. Park, C. S. Mishra, H. S. Mao, G. Guglielmo, A.L. Read, D. L. Adams, W. E. Cooper, H. Johnstad, T. Yasuda, C. L. Kim, T. L. Geld, Hiroaki Aihara, C. Klopfenstein, P. M. Tuts, M. D. Peters, A. L. Lyon, Shuichi Kunori, Daniel R Claes, J. Z.Y. Jiang, Serban Protopopescu, Brajesh C Choudhary, R. Demina, Robert Kehoe, A. Bischoff, Ph. Mangeot, A. V. Kostritskiy, Bobby Samir Acharya, M. L. Stevenson, M. Paterno, Brad Abbott, H. A. Neal, H. C. Shankar, R. W. Stephens, J. T. Linnemann, R. Astur, Jianming Qian, Y. Pischalnikov, Ulrich Heintz, J. Balderston, J. M. Guida, T. Huehn, Peter Nemethy, Sissel Hansen, Dhiman Chakraborty, H. Jöstlein, D. Buchholz, M. Goforth, F. Nang, D. Fein, D. Pušeljié, Vasken Hagopian, H. Weerts, A. Baden, A. Narayanan, G. C. Blazey, M. Diesburg, T. Heuring, L. Oesch, L. T. Goss, Welathantri Gd Dharmaratna, H. L. Melanson, P. Z. Quintas, K. Bazizi, M. Sosebee, Erich Varnes, A. Klatchko, T. L. Taylor, R. Yamada, J. M. De Miranda, D. Owen, N. Mokhov, N. Graf, H. Johari, V. Balamurali, D. Lincoln, J. H. Christenson, S. H. Ahn, P. Tamburello, J. Tarazi, T. McKibben, M. V. S. Rao, Heng Xu, Eunil Won, Allan G Clark, J. Alitti, Andrew White, A. Goldschmidt, Orin I. Dahl, John Rutherfoord, Heriberto Castilla-Valdez, N. Grossman, J. Bantly, P. Grudberg, P. I. Goncharov, Alexander Vorobiev, R. E. Lanou, S. Fuess, T. McMahon, Mary Beth Adams, Y. E. Gutnikov, Raymond Brock, Tong Hu, Boaz Klima, J. Kourlas, Jing Li, M.K. Fatyga, B. Baldin, E. A. Kozlovski, D. Norman, C. S. Gao, John Hobbs, P. Yamin, Andrew Brandt, R. Engelmann, Y. H. Zhou, S. Willis, M. Pang, Y. Ducros, T. Joffe-Minor, Liu Chen, G. E. Forden, C. Yanagisawa, A. P. Heinson, A. Kernan, Young-Sang Yu, V. Sirotenko, H.E. Miettinen, O. V. Eroshin, S. Mani, M. Abolins, H. Haggerty, S. Lökös, B. G. Pope, H. E. Fisk, Y. K. Li, James C. Green, S. Glenn, J. McKinley, Phillip Gutierrez, Gregory R Snow, R. E. Hall, R. Madden, L. Rasmussen, F. Borcherding, D. A. Stoianova, P. Mooney, Peter W. Draper, J. Solomon, J. Yang, Y. S. Zhu, Elizaveta Shabalina, Pushpalatha C Bhat, M. Mudan, J. Teiger, M. A.C. Cummings, V. M. Podstavkov, N. K. Mondal, H. T. Diehl, B. Hoeneisen, Lee Sawyer, J. T. White, T. Fahland, M. Fortner, E. Oltman, B. I. Klochkov, A. Taketani, A. Boehnlein, P. M. Sood, Y. M. Park, S.A. Kahn, J. Perkins, J. Ellison, Victor Daniel Elvira, P. Bloom, J. A. Wightman, M. Demarteau, R. E. Avery, J. Bendich, J. Wilcox, N. I. Bojko, M. Tartaglia, M. H.G. Souza, P. A. Rapidis, G. Wang, Alberto Santoro, Seong Keun Kim, C. Shaffer, D. Cullen-Vidal, A. Jonckheere, Stephan Linn, S. Gao, N. Oshima, K. Genser, Daria Zieminska, N. N. Biswas, R. D. Schamberger, A. N. Galjaev, A. Smith, J. F. Lebrat, Sarah Catherine Eno, H. E. Montgomery, Ting Hu, D. Vititoe, A. Zieminski, Vyacheslav Klyukhin, J. S. Hoftun, J. N. Butler, P. D. Grannis, D. P. Stoker, H. Piekarz, R. J. Genik, S. Margulies, S. Lami, A. Pluquet, P.F. Ermolov, L. T. Kerth, Yanxi Zhang, V. S. Burtovoi, S. Y. Jun, C. Boswell, S. Abachi, Suman Bala Beri, I. Bertram, Bruno Mansoulie, F. Lobkowicz, L. Z. Wang, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, V. N. Evdokimov, J. Warchol, D.S. Koltick, V. A. Bezzubov, J. P. Negret, R. P. Smith, Michael Shupe, S. Rusin, J. Wang, Harrison Prosper, L. Markosky, G. Di Loreto, D. Denisov, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, R. J. Madaras, S. Fahey, D. Hedin, Yu Fisyak, D. Stewart, S. N. Gurzhiev, B. Gibbard, J. Sculli, Laurent Chevalier, Stephen Wimpenny, T. Marshall, Quing Zhu, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, Elizabeth Gallas, W. Smart, K. A. Johns, S. P. Denisov, V. Oguri, M. R. Krishnaswamy, F. Hsieh, S. Grünendahl, Sergey Chekulaev, I. Adam, P. Rubinov, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, L. Lueking, Wlodek Guryn, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, and G. Eppley
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Parton, Renormalization, Nuclear physics, Transverse plane, High Energy Physics::Experiment, Rapidity, Fermilab, Nuclear Experiment, Energy (signal processing)
Abstract: The distribution of the transverse energy in jets has been measured in p p collisions at s =1.8 TeV TeV using the DO detector at Fermilab. This measurement of the jet shape is made as a function of jet transverse energy in both the central and forward rapidity regions. Jets are shown to narrow both with increasing transverse energy and with increasing rapidity. Next-to-leading order partonic QCD calculations are compared to the data. Although the calculations qualitatively describe the data, they are shown to be very dependent on renormalization scale, parton clustering algorithm, and jet direction definition and they fail to describe the data in all regions consistently.
Published: 1995
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218. Search for heavy W bosons in 1.8 TeV p collisions

Author: P. A. Rapidis, S. Margulies, T. Joffe-Minor, S. Lami, A. Kernan, A. Jonckheere, C. Yanagisawa, A. L. Read, A. Pluquet, Stephan Linn, P.F. Ermolov, Yanxi Zhang, H. E. Fisk, J. Yang, N. Oshima, B. May, G. Eppley, P. Padley, V. S. Burtovoi, J. Solomon, Daria Zieminska, D. Edmunds, E. Neis, Alexey Volkov, R. D. Schamberger, A. N. Galjaev, A. Smith, J. F. Lebrat, Y. H. Zhou, V. M. Podstavkov, G. E. Forden, James H Cochran, A. P. Heinson, M. Mohammadi-Baarmand, J. G.R. Lima, B. Gobbi, Mitchell Wayne, H. Schellman, J. M. Kohli, M. Fortner, R. E. Hall, M. D. Peters, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, S. A. Jerger, J. Perkins, S. Fuess, D. Nešić, J. T. Linnemann, J. Thompson, C. Cretsinger, M. Strovink, L. Oesch, M. Goforth, B. Gómez, A. Leflat, Jasvinder A. Singh, Pushpalatha C Bhat, M. Mudan, A. S. Ito, N. Mokhov, E. James, W. G. Cobau, M. I. Martin, H. Johnstad, T. Huehn, Z. H. Zhu, D. Fein, Erich Varnes, B. I. Klochkov, J. M. De Miranda, Shashikant Dugad, N. Grossman, Haifeng Li, Jing Li, A. Klatchko, C. Shaffer, D. Cullen-Vidal, K. Genser, N. N. Biswas, F. Borcherding, J. S. Kang, S. Krzywdzinski, T. Yasuda, V. I. Kochetkov, W. E. Cooper, Daniel R Claes, A. Zylberstejn, H. Greenlee, V. Sirotenko, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, R. Demina, Gilvan Alves, O. V. Eroshin, A. Bross, Ph. Mangeot, Pm Tuts, Serban Protopopescu, E. Oltman, K. Streets, Vipin Bhatnagar, B. Baldin, Meenakshi Narain, A. Peryshkin, A. Taketani, Phillip Gutierrez, C. Boswell, M. H.G. Souza, J. Bendich, C. T. Murphy, J. Jaques, S. Abachi, Ron Lipton, M. Bhattacharjee, Y. M. Park, P. Yepes, R. Partridge, E. Flattum, H. E. Montgomery, R. Astur, J. Womersley, A. Bischoff, A. V. Kostritskiy, G. Griffin, W. A. Wenzel, Y. Ducros, S.A. Kahn, Sarah Catherine Eno, M. Demarteau, R. E. Avery, Y. S. Zhu, C. S. Mishra, Sissel Hansen, T. Heuring, A. Goldschmidt, A. Narayanan, N. Graf, Suman Bala Beri, F. Nang, R. Hirosky, J. Yu, S. Feher, C. H. Park, H. Johari, V. Balamurali, D. Pušeljić, H. S. Mao, Vyacheslav Klyukhin, G. Guglielmo, D. P. Stoker, R. K. Shivpuri, S. Durston-Johnson, M. Sosebee, G. Wang, Alberto Santoro, Brajesh C Choudhary, D. L. Adams, Ying Li, A. Baden, D. Buchholz, K. Bazizi, V. A. Bezzubov, Seong Keun Kim, G. C. Blazey, Vasken Hagopian, H. Weerts, Sharon Hagopian, C. L. Kim, T. McKibben, M. V. S. Rao, N. Denisenko, S. Reucroft, N. Amos, G. Finocchiaro, Victor Daniel Elvira, J. P. Negret, N. A. Roe, S. Chopra, Raymond Brock, Boaz Klima, S. Glenn, J. McKinley, T. L. Taylor, J. Alitti, M. Chung, C. Yoshikawa, Hiroaki Aihara, P. Tamburello, R. P. Smith, R. Yamada, J. Bantly, J. Featherly, Heng Xu, A. K.A. Maciel, J. M. Hauptman, J. Borders, Cecilia Elena Gerber, D. A. Stoianova, P. Yamin, Michael Shupe, V. Glebov, Alexander Vorobiev, Marvin Johnson, S. Youssef, D. Norman, F. Wen, S. H. Ahn, R. Hatcher, Heriberto Castilla-Valdez, G. Álvarez, A. V. Kozelov, J. Z.Y. Jiang, J. Kotcher, Jianming Qian, Orin I. Dahl, John Rutherfoord, S. Mani, D. Vititoe, R. J. Genik, Gregory R Snow, L. T. Goss, R. W. Stephens, S. Willis, M. Pang, Robert Kehoe, Andrew White, R. Madden, N. Parua, Andrew Brandt, R. Engelmann, Liu Chen, Mary Beth Adams, J. Wang, Harrison Prosper, J. Drinkard, T. Fahland, E. W. Anderson, R. Snihur, J. Balderston, N. Varelas, L. Rasmussen, Peter W. Draper, P. Grudberg, T. McMahon, Y. E. Gutnikov, K. Denisenko, H.E. Miettinen, Allen Mincer, Y. Pischalnikov, Ulrich Heintz, J. Kourlas, Christina Gao, H. Jöstlein, J. Wilcox, A. L. Lyon, I. Bertram, W. Y. Chen, Bruno Mansoulie, Matthew Jones, E. A. Kozlovski, Tong Hu, S. M. Chang, James C. Green, D. Lincoln, Eunil Won, F. Lobkowicz, B. G. Pope, Kaushik De, Shuichi Kunori, John Hobbs, M. Diesburg, J. A. Guida, D. Casey, H. Haggerty, S. Lökös, D. Owen, J. Tarazi, H. L. Melanson, P. Z. Quintas, L. Z. Wang, George R. Kalbfleisch, T. Rockwell, R. L. Dixon, J. H. Christenson, Michael Rijssenbeek, P. Bloom, J. A. Wightman, K. S. Hahn, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, W. X. Gu, Young-Sang Yu, Elizaveta Shabalina, D. Cutts, J. Teiger, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, N. I. Bojko, Rajendran Raja, S. C. Loken, C. Klopfenstein, V. N. Evdokimov, M. L. Stevenson, D.S. Koltick, A. A. Mayorov, Greg Landsberg, S. Gao, Brad Abbott, S. H. Aronson, J. T. White, M. K. Fatyga, Welathantri Gd Dharmaratna, J. M. Guida, T. L. Geld, Dhiman Chakraborty, M. Paterno, Ting Hu, Randy Ruchti, J. S. Hoftun, J. N. Butler, P. D. Grannis, R. L. McCarthy, H. Piekarz, Peter Nemethy, Laurent Chevalier, Stephen Wimpenny, A. Zieminski, R. J. Madaras, D. Hedin, L. T. Kerth, T. Marshall, S. Y. Jun, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, B. Gibbard, J. Sculli, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, S. Grünendahl, A. Para, M. D. Marx, H. D. Wahl, Sergey Chekulaev, I. V. Mandrichenko, R. Hernández-Montoya, A. Milder, C. Murphy, I. Adam, P. Rubinov, Allan G Clark, K. W. Merritt, R. E. Lanou, M.K. Fatyga, C. K. Jung, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, L. Lueking, M. Abolins, P. Mooney, N. K. Mondal, H. T. Diehl, A. Boehnlein, P. M. Sood, J. Ellison, P. I. Goncharov, W. Guryn, S. Rusin, L. Markosky, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, G. Di Loreto, D. Denisov, Srinivasan Rajagopalan, V. Oguri, Thomas Ferbel, Dan Green, Yu Fisyak, D. Stewart, S. N. Gurzhiev, J. Warchol, Quing Zhu, Elizabeth Gallas, S. Fahey, W. Smart, K. A. Johns, and M. Tartaglia
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Gauge boson, Branching fraction, High Energy Physics::Phenomenology, Tevatron, Standard Model, Nuclear physics, High Energy Physics::Experiment, Neutrino, Lepton, Boson
Abstract: A search for a heavy charged gauge boson, W′, using the decay channels W′ → eν and W′ → τν → eνν ν is reported. The data used in the analysis were collected by the DO experiment at the Fermilab Tevatron during the 1992-93 p p collider run from an integrated luminosity of 13.9 ± 0.8 pb−1 at s =1.8 TeV . Assuming that the neutrino from W′ decay is stable and has a mass significantly less than mW′, an upper limit at the 95% confidence level is set on the cross section times branching ratio for p p → W′ → eν . A W′ with the same couplings to quarks and leptons as the standard model W boson is excluded for mW′
Published: 1995
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219. EVALUATION of DIE SWELL and VOLUMETRIC EXPANSION IN CORN MEAL EXTRUDATES

Author: H.E. Huff, F. Hsieh, and J.F. Faller
Subjects: business.product_category, Materials science, Moisture, General Chemical Engineering, Plastics extrusion, Mineralogy, Die swell, Swell, Capillary length, Die (manufacturing), Extrusion, Ligand cone angle, Composite material, business, Food Science
Abstract: A method to determine die swell in the presence of volumetric expansion due to moisture vaporization in extruded food products is proposed. the method is applied to twin screw extrusion of corn meal in a study to investigate the effects of extruder die parameter (exit capillary length and entrance cone angle), screw speed, and specific feeding load on die swell and volumetric expansion. the die swell results are compared with known effects for nonexpanded polymers. Die swell tended to decrease with increasing exit length, but had only a weak response to entrance angle. Increasing specific feeding load (SFL) increased die swell, where as increasing screw speed produced increases or decreases in die swell, depending on the SFL. Die swells ranged from approximately 1.2 to 1.7, accounted for approximately 10 to 22% of the total radial expansion, and for approximately 18 to 38% of the extrudate cross sectional area. Volumetric expansion increased with increasing die exit length, but was insensitive to entrance angle with a slight concave upward response. Increasing screw speed produced large increases in volumetric expansion, while increasing SFL produced only slight increases. Observations about die swell compare favorably with previous studies of nonexpanded polymers, suggesting that the proposed analysis method may be useful for food viscoelasticity evaluation studies.
Published: 1995
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220. WandZBoson Production inpp¯Collisions ats=1.8TeV

Author: C. T. Murphy, G. Finocchiaro, M. Sosebee, S. Durston-Johnson, Raymond Brock, Boaz Klima, J. Alitti, J. Bantly, N. Denisenko, S. Reucroft, C. K. Jung, C. Yoshikawa, M. D. Marx, D. Norman, H. D. Wahl, T. McKibben, M. V. S. Rao, Andrew Brandt, S. Willis, M. Pang, D. Pueljić, R. Engelmann, Liu Chen, A. L. Read, S. Rusin, L. Markosky, N. A. Roe, H.E. Miettinen, W. Y. Chen, S. Chopra, Alexander Vorobiev, M. Chung, G. Di Loreto, Paolo Franzini, V. S. Narasimham, J. M. Hauptman, Cecilia Elena Gerber, D. Denisov, Thomas G Trippe, W. X. Gu, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, D. Edmunds, E. Neis, E. W. Anderson, R. J. Madaras, A. A. Mayorov, T. Huehn, S. Fahey, S. Fuess, P. Bloom, S. Margulies, B. Gibbard, F. Borcherding, M. K. Fatyga, J. Sculli, Jianming Qian, M. D. Peters, Yu Fisyak, D. Stewart, J. A. Wightman, S. N. Gurzhiev, H. L. Melanson, P. Z. Quintas, S. A. Jerger, Quing Zhu, N. I. Bojko, L. Oesch, R. K. Shivpuri, R. L. McCarthy, S. Lami, D. Fein, Pushpalatha C Bhat, P. I. Goncharov, A. Pluquet, P.F. Ermolov, Yanxi Zhang, R. Astur, Andrew White, A. Leflat, I. V. Mandrichenko, J. Jaques, D. Hedin, W. G. Cobau, M. I. Martin, S. Gao, J. S. Kang, T. Heuring, Allen Mincer, K. Denisenko, E. Oltman, J. Drinkard, Christina Gao, M. Tartaglia, W. Guryn, Tong Hu, Elizabeth Gallas, Kaushik De, R. Hernández-Montoya, J. H. Christenson, P. Grudberg, Ron Lipton, M. Mudan, A. Milder, Ph. Mangeot, J. Womersley, C. Boswell, Y. E. Gutnikov, Erich Varnes, I. Bertram, V. Sirotenko, J. M. De Miranda, M. L. Stevenson, S. H. Aronson, S. Abachi, M. Bhattacharjee, Bruno Mansoulie, A. L. Lyon, Shuichi Kunori, R. Hatcher, J. Yu, C. Murphy, J. Kourlas, Peter Nemethy, M. Mohammadi-Baarmand, Ting Hu, Nikolai Mokhov, V. S. Burtovoi, Suman Bala Beri, J. S. Hoftun, J. N. Butler, F. Lobkowicz, P. D. Grannis, S. Feher, H. Piekarz, Laurent Chevalier, L. Z. Wang, R. Hirosky, O. V. Eroshin, C. Shaffer, D. Cullen-Vidal, K. Genser, John Hobbs, M. A.C. Cummings, H. Johari, V. Balamurali, B. Hoeneisen, Lee Sawyer, N. N. Biswas, Stephen Wimpenny, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, C. L. Kim, Haifeng Li, Brajesh C Choudhary, T. Joffe-Minor, C. Yanagisawa, Hiroaki Aihara, M. Abolins, H. E. Fisk, G. Eppley, Allan G Clark, B. G. Pope, B. Baldin, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, S. Glenn, T. Marshall, J. McKinley, D. A. Stoianova, Darien Wood, Y. Ducros, J. B. Singh, Young-Sang Yu, P. M. Tuts, R. W. Stephens, N. Grossman, Nicholas John Hadley, P. Mooney, J. T. Linnemann, A. Zieminski, M. Goforth, J. Solomon, N. K. Mondal, H. T. Diehl, S. P. Denisov, Elizaveta Shabalina, P. Padley, Alexey Volkov, J. G.R. Lima, R. E. Lanou, M. R. Krishnaswamy, Meenakshi Narain, A. Peryshkin, A. Taketani, Y. M. Park, S.A. Kahn, W. E. Cooper, Daniel R Claes, S. Blessing, Scott Snyder, R. Markeloff, T. L. Taylor, W. Smart, K. A. Johns, D. Vititoe, B. May, R. J. Genik, Y. S. Zhu, A. S. Ito, V. N. Evdokimov, J. Warchol, J. T. White, D.S. Koltick, V. A. Bezzubov, A. Klatchko, Jing Li, M. Demarteau, R. E. Avery, F. Hsieh, Y. Pischalnikov, Ulrich Heintz, A. Boehnlein, James H Cochran, P. M. Sood, Mitchell Wayne, H. Schellman, J. M. Kohli, M.K. Fatyga, S. Grünendahl, Heriberto Castilla-Valdez, S. Y. Jun, G. Álvarez, B. I. Klochkov, A. Para, D. Buchholz, H. Jöstlein, J. P. Negret, R. P. Smith, Y. H. Zhou, Sergey Chekulaev, P. A. Rapidis, V. Oguri, J. Featherly, V. Glebov, Marvin Johnson, J. Kotcher, B. Gobbi, J. A. Guida, D. Casey, P. Tamburello, Heng Xu, A. Kernan, M. Diesburg, J. Bendich, A. Jonckheere, J. Ellison, Victor Daniel Elvira, J. Thompson, N. Graf, Stephan Linn, G. E. Forden, Michael Shupe, K. Streets, Vipin Bhatnagar, A. Narayanan, A. P. Heinson, A. V. Kozelov, Rajendran Raja, N. Oshima, Daria Zieminska, H. Johnstad, R. Partridge, E. Flattum, D. Owen, R. D. Schamberger, A. N. Galjaev, A. Smith, Alberto Santoro, T. Yasuda, S. C. Loken, C. S. Mishra, G. Griffin, J. F. Lebrat, S. Youssef, Seong Keun Kim, Gregory R Snow, B. Gómez, Z. H. Zhu, Brad Abbott, R. E. Hall, C. H. Park, H. S. Mao, J. Tarazi, Welathantri Gd Dharmaratna, D. L. Adams, A. Goldschmidt, P. Yamin, M. L. Kelly, Robert Kehoe, E. Amidi, J. V.D. Wirjawan, M. H.G. Souza, Howard Gordon, J. R. T. de Mello Neto, J. Balderston, Shashikant Dugad, S. Mani, Vasken Hagopian, K. C. Frame, H. E. Montgomery, O. Ramirez, R. Madden, L. Rasmussen, Peter W. Draper, C. Cretsinger, M. Strovink, J. Wang, Harrison Prosper, D. P. Stoker, T. Fahland, I. Adam, P. Rubinov, J. Wilcox, K. W. Merritt, R. Demina, E. James, S. Krzywdzinski, A. L. Spadafora, J. F. Bartlett, D. Lincoln, Eunil Won, D. Neić, A. Bischoff, A. V. Kostritskiy, Yanwen Liu, Gilvan Alves, V. I. Kochetkov, L. Lueking, Sissel Hansen, A. Zylberstejn, H. Greenlee, F. Nang, A. Bross, Serban Protopopescu, K. Bazizi, Sharon Hagopian, A. K.A. Maciel, R. Snihur, N. Varelas, S. M. Chang, C. Klopfenstein, J. M. Guida, Dhiman Chakraborty, W. A. Wenzel, L. T. Kerth, N. Amos, J. Yang, V. M. Podstavkov, M. Fortner, J. Perkins, J. Borders, J. Z.Y. Jiang, L. T. Goss, E. A. Kozlovski, H. Haggerty, S. Lökös, H. Weerts, N. Parua, Matthew Jones, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, Sarah Catherine Eno, Vyacheslav Klyukhin, Ying Li, A. Baden, G. C. Blazey, Randy Ruchti, R. Yamada, S. H. Ahn, Orin I. Dahl, John Rutherfoord, Mary Beth Adams, James C. Green, K. S. Hahn, D. Cutts, Greg Landsberg, T. L. Geld, and M. Paterno
Subjects: Systematic error, Combinatorics, Physics, Muon, Branching fraction, General Physics and Astronomy, Transverse mass, Boson
Abstract: The inclusive cross sections times leptonic branching ratios for $W$ and $Z$ boson production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8$ TeV were measured using the D0 detector at the Fermilab Tevatron collider: ${\ensuremath{\sigma}}_{W}B(W\ensuremath{\rightarrow}e\ensuremath{\nu})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2.36\ifmmode\pm\else\textpm\fi{}0.07\ifmmode\pm\else\textpm\fi{}0.13\mathrm{nb}$, ${\ensuremath{\sigma}}_{W}B\left(W\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\nu}\right)\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2.09\ifmmode\pm\else\textpm\fi{}0.23\ifmmode\pm\else\textpm\fi{}0.11\mathrm{nb}$, ${\ensuremath{\sigma}}_{Z}B\left(Z\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}\right)\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.218\ifmmode\pm\else\textpm\fi{}0.011\ifmmode\pm\else\textpm\fi{}0.012\mathrm{nb}$, and ${\ensuremath{\sigma}}_{Z}B\left(Z\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}\right)\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.178\ifmmode\pm\else\textpm\fi{}0.030\ifmmode\pm\else\textpm\fi{}0.009\mathrm{nb}$. The first error is the combined statistical and systematic uncertainty, and the second reflects the uncertainty in the luminosity. For the combined electron and muon analyses we find ${\ensuremath{\sigma}}_{W}B(W\ensuremath{\rightarrow}l\ensuremath{\nu})/{\ensuremath{\sigma}}_{Z}B(Z\ensuremath{\rightarrow}{l}^{+}{l}^{\ensuremath{-}})\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}10.90\ifmmode\pm\else\textpm\fi{}0.49$. Assuming standard model couplings, this result is used to determine the width of the $W$ boson, $\ensuremath{\gamma}(W)\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2.044\ifmmode\pm\else\textpm\fi{}0.093\mathrm{GeV}$.
Published: 1995
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221. Limits on the AnomalousZZγandZγγCouplings inpp¯Collisions ats=1.8TeV

Author: Stephen Wimpenny, S. Youssef, S. Margulies, S. Lami, A. Pluquet, P.F. Ermolov, W. Y. Chen, Paolo Franzini, V. S. Narasimham, A. A. Mayorov, M. K. Fatyga, T. Marshall, A. L. Read, Darien Wood, J. Yu, N. A. Roe, S. Chopra, M. Chung, S. Rusin, Robert Kehoe, Yanxi Zhang, C. L. Kim, Hiroaki Aihara, P. M. Tuts, R. W. Stephens, P. A. Rapidis, L. Markosky, V. S. Burtovoi, J. Balderston, Nicholas John Hadley, S. Blessing, J. Yang, J. M.R. Roldan, B. May, A. Kernan, C. Cretsinger, M. Strovink, E. James, M. Abolins, A. Zinchenko, D. Edmunds, E. Neis, A. Jonckheere, Stephan Linn, D. Lincoln, Eunil Won, S. P. Denisov, P. Grudberg, R. Snihur, Scott Snyder, R. Markeloff, M. Mohammadi-Baarmand, K. Denisenko, M. D. Marx, N. Oshima, V. M. Podstavkov, N. Varelas, Daria Zieminska, T. Joffe-Minor, M. D. Peters, H. D. Wahl, G. Di Loreto, Bobby Samir Acharya, H. A. Neal, S. Fuess, Gilvan Alves, B. Gobbi, P. Mooney, R. J. Madaras, Haifeng Li, C. Yanagisawa, R. D. Schamberger, A. N. Galjaev, A. Smith, H. L. Melanson, P. Z. Quintas, A. L. Lyon, H. C. Shankar, J. T. Linnemann, H. E. Fisk, M. Fortner, L. Oesch, J. F. Lebrat, Ting Hu, D. Denisov, M. Goforth, M. R. Krishnaswamy, S. M. Chang, Elizabeth Gallas, D. Buchholz, F. Hsieh, R. L. McCarthy, B. Gibbard, Meenakshi Narain, A. Peryshkin, A. R. Clark, Shuichi Kunori, J. Perkins, W. E. Cooper, R. Hatcher, J. H. Christenson, B. Baldin, J. Solomon, N. K. Mondal, H. T. Diehl, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, Y. Ducros, S. A. Jerger, L. P. Chen, Daniel R Claes, A. Narayanan, A. Zieminski, S. Grünendahl, A. Para, V. Sirotenko, I. Bertram, P. Tamburello, Jasvinder A. Singh, J. Sculli, A. Efimov, R. K. Shivpuri, C. Milner, F. Borcherding, A. Leflat, M. Sosebee, J. Alitti, J. Bantly, D. Schmid, Heng Xu, W. G. Cobau, M. I. Martin, J. S. Kang, A. Klatchko, S. Glenn, J. McKinley, D. A. Stoianova, Sergey Chekulaev, J. Jaques, K. Streets, Vipin Bhatnagar, Gregory R Snow, P. Yamin, S. Y. Jun, Peter Nemethy, S. Fahey, H. Johnstad, T. Yasuda, T. G. Trippe, S. C. Loken, B. I. Klochkov, J. M. Hauptman, S. Mani, C. T. Murphy, J. Borders, Ph. Mangeot, G. Eppley, Ron Lipton, A. Boehnlein, P. M. Sood, J. Ellison, D. Vititoe, W. Smart, Victor Daniel Elvira, Cecilia Elena Gerber, F. Stocker, J. A. Wightman, J. Z.Y. Jiang, O. V. Eroshin, R. J. Genik, M. Bhattacharjee, J. G.R. Lima, C. Klopfenstein, K. A. Johns, J. Womersley, Andrew Brandt, R. Engelmann, H.E. Miettinen, J. Drinkard, M. Tartaglia, J. Featherly, Kaushik De, Bruno Mansoulie, V. Glebov, Marvin Johnson, G. Finocchiaro, R. Madden, R. Partridge, E. Flattum, G. Griffin, L. Rasmussen, Peter W. Draper, Nikolai Mokhov, J. M. Guida, A. S. Ito, R. Hirosky, N. I. Bojko, Andrew White, Jianming Qian, L. T. Goss, C. H. Park, H. S. Mao, D. L. Adams, C. Boswell, S. Durston-Johnson, Y. S. Zhu, N. Parua, Matthew Jones, F. Lobkowicz, S. H. Aronson, H. Johari, V. Balamurali, B. G. Pope, M. H.G. Souza, S. Feher, S. Abachi, A. V. Kozelov, R. Astur, Raymond Brock, Boaz Klima, T. Heuring, P. Yepes, S. Gao, N. Denisenko, S. Reucroft, Pushpalatha C Bhat, M. Mudan, A. L. Spadafora, H. E. Montgomery, I. V. Mandrichenko, Suman Bala Beri, Dhiman Chakraborty, I. Adam, P. Rubinov, E. Amidi, J. V.D. Wirjawan, K. W. Merritt, D. Norman, J. R. T. de Mello Neto, Sarah Catherine Eno, S. Fredriksen, T. Fahland, C. Yoshikawa, Brajesh C Choudhary, Y. E. Gutnikov, Elizaveta Shabalina, S. Igarashi, J. Kourlas, Vyacheslav Klyukhin, Tong Hu, Yu Fisyak, S. Willis, M. Pang, R. Hernández-Montoya, A. Milder, M. A.C. Cummings, J. S. Hoftun, J. N. Butler, P. D. Grannis, H. Piekarz, T. L. Taylor, J. F. Bartlett, Q. Z. Li-Demarteau, J. Wilcox, Ying Li, D. Stewart, J. T. White, S. N. Gurzhiev, P. I. Goncharov, W. Guryn, B. Hoeneisen, Lee Sawyer, L. Z. Wang, C. Murphy, A. Baden, D. P. Stoker, E. A. Kozlovski, Randy Ruchti, C. S. Mishra, T. McKibben, M. V. S. Rao, G. C. Blazey, D. Neić, Yanwen Liu, J. A. Guida, D. Casey, L. Lueking, Heriberto Castilla-Valdez, T. Rockwell, R. Yamada, H. Haggerty, Alexander Vorobiev, V. Oguri, W.A. Wenzel, S. Lökös, S. H. Ahn, Vasken Hagopian, R. E. Lanou, A. Taketani, John Hobbs, Quing Zhu, John Rutherfoord, G. Álvarez, H. Weerts, Rajendran Raja, M. L. Stevenson, R. L. Dixon, M.K. Fatyga, Michael Rijssenbeek, Z. R. Wolf, Mary Beth Adams, Y. M. Park, P. R.G. Virador, Brad Abbott, S.A. Kahn, Young-Sang Yu, Welathantri Gd Dharmaratna, J. Kotcher, James C. Green, K. S. Hahn, Sharon Hagopian, D. Cutts, N. Amos, A. K.A. Maciel, Greg Landsberg, M. Demarteau, R. E. Avery, T. L. Geld, M. L. Kelly, O. I. Dahl, Howard Gordon, M. Paterno, C. K. Jung, K. C. Frame, O. Ramirez, Alberto Santoro, L. T. Kerth, E. Oltman, N. Graf, Seong Keun Kim, V. N. Evdokimov, J. Warchol, D.S. Koltick, V. A. Bezzubov, J. P. Negret, R. P. Smith, A. Bischoff, A. V. Kostritskiy, Michael Shupe, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, M. Diesburg, Sissel Hansen, D. Owen, F. Nang, J. Tarazi, K. Bazizi, J. Wang, Harrison Prosper, D. Pueljić, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, J. Bendich, J. Thompson, B. Gómez, S. Krzywdzinski, V. I. Kochetkov, Z. H. Zhu, Shashikant Dugad, A. Zylberstejn, H. Greenlee, R. Demina, A. Bross, D. Hedin, E. W. Anderson, Serban Protopopescu, T. Huehn, Allen Mincer, Christina Gao, D. Fein, Erich Varnes, J. M. De Miranda, N. Grossman, Jing Li, Y. H. Zhou, G. E. Forden, A. P. Heinson, R. E. Hall, and Laurent Chevalier
Subjects: Coupling, Physics, Particle physics, Muon, Energy spectrum, General Physics and Astronomy, Direct search, Luminosity
Abstract: We performed a direct search for the anomalous {ital ZZ}{gamma} and {ital Z}{gamma}{gamma} couplings by studying {ital p{bar p}}{r_arrow}ll{gamma}+{ital X} (l={ital e},{mu}) events at {radical}{ital s}=1.8 TeV with the D0 detector at the Fermilab Tevatron Collider. A fit to the transverse energy spectrum of the photon in the signal events, based on the data set corresponding to an integrated luminosity of 14.3pb{sup {minus}1} (13.7pb{sup {minus}1}) for the electron (muon) channel, yields the following 95% confidence level limits on the anomalous {ital CP}-conserving {ital ZZ}{gamma} couplings: {vert_bar}{ital h}{sub 30}{sup {ital Z}}{vert_bar}{lt}1.8 ({ital h}{sub 40}{sup {ital Z}}=0) and {vert_bar}{ital h}{sub 40}{sup {ital Z}}{vert_bar}{lt}0.5 ({ital h}{sub 30}{sup {ital Z}}=0), for a form-factor scale {Lambda}=500 GeV. Limits for the {ital Z}{gamma}{gamma} couplings and {ital CP}-violating couplings are also discussed.
Published: 1995
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222. Measurement of theWWγGauge Boson Couplings inpp¯Collisions ats=1.8TeV

Author: S. A. Jerger, J. Drinkard, N. Parua, A. Leflat, M. Tartaglia, W. G. Cobau, M. I. Martin, Matthew Jones, Kaushik De, J. A. Guida, D. Casey, J. S. Kang, S. H. Aronson, P. I. Goncharov, Ph. Mangeot, Rajendran Raja, R. Astur, T. Heuring, W. Guryn, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, S. C. Loken, J. M. Hauptman, Brad Abbott, Cecilia Elena Gerber, N. A. Roe, Elizabeth Gallas, Welathantri Gd Dharmaratna, S. Chopra, P. Padley, Alexey Volkov, Randy Ruchti, W. A. Wenzel, L. T. Kerth, R. Hatcher, C. Shaffer, D. Cullen-Vidal, K. Genser, N. N. Biswas, H. Johari, V. Balamurali, M. Chung, Jianming Qian, V. Oguri, J. Warchol, A. Goldschmidt, S. Krzywdzinski, James H Cochran, Mitchell Wayne, J. M. Kohli, W. Smart, K. A. Johns, Tong Hu, R. L. McCarthy, C. S. Mishra, W. E. Cooper, Daniel R Claes, Laurent Chevalier, Stephen Wimpenny, C. T. Murphy, J. Thompson, Yu Fisyak, B. G. Pope, B. Gómez, B. Baldin, V. I. Kochetkov, A. Zylberstejn, T. Fahland, H. Greenlee, M. Abolins, D. Stewart, S. N. Gurzhiev, J. Jaques, M. Sosebee, A. Bross, T. Marshall, P. Mooney, G. Finocchiaro, Vasken Hagopian, Z. H. Zhu, C. Boswell, F. Borcherding, M. L. Kelly, Elizaveta Shabalina, Y. Ducros, Serban Protopopescu, H. Weerts, J. Wilcox, Shashikant Dugad, I. Bertram, J. Bendich, N. K. Mondal, H. T. Diehl, S. Abachi, E. Oltman, J. Alitti, Darien Wood, Ron Lipton, A. Boehnlein, Peter Nemethy, Howard Gordon, K. C. Frame, O. Ramirez, J. T. White, J. Bantly, P. M. Sood, J. Womersley, Ting Hu, Alberto Santoro, S. Durston-Johnson, Y. H. Zhou, G. E. Forden, A. P. Heinson, Suman Bala Beri, Nicholas John Hadley, G. Eppley, Bruno Mansoulie, F. Lobkowicz, R. Demina, J. Ellison, Nikolai Mokhov, Seong Keun Kim, T. McKibben, B. May, S. Fuess, M. V. S. Rao, S. Blessing, Quing Zhu, Victor Daniel Elvira, R. E. Hall, C. Cretsinger, T. Joffe-Minor, Andrew White, A. Zieminski, C. Yanagisawa, N. Denisenko, M. Strovink, L. Z. Wang, Alexander Vorobiev, N. Amos, Sarah Catherine Eno, H. E. Fisk, S. Reucroft, J. G.R. Lima, T. Huehn, Mark Raymond Adams, S. Feher, Scott Snyder, A. Bischoff, A. V. Kostritskiy, J. Borders, T. Rockwell, R. L. Dixon, S. P. Denisov, R. Markeloff, Michael Rijssenbeek, D. Fein, P. Grudberg, E. James, Y. E. Gutnikov, C. K. Jung, J. Solomon, S. Youssef, S. Fahey, C. Yoshikawa, Erich Varnes, Andrew Brandt, Sissel Hansen, J. M. De Miranda, R. Engelmann, Liu Chen, J. Kourlas, A. S. Ito, M. Bhattacharjee, R. Hirosky, D. Pueljić, V. Sirotenko, B. Gobbi, F. Nang, M. R. Krishnaswamy, John Hobbs, Sharon Hagopian, A. K.A. Maciel, S. Y. Jun, J. Z.Y. Jiang, Brajesh C Choudhary, V. N. Evdokimov, Gilvan Alves, F. Hsieh, N. Grossman, B. I. Klochkov, O. V. Eroshin, H.E. Miettinen, L. T. Goss, Robert Kehoe, Young-Sang Yu, Raymond Brock, Boaz Klima, M. Mohammadi-Baarmand, D.S. Koltick, J. Balderston, H. Schellman, K. Bazizi, Jasvinder A. Singh, Y. S. Zhu, Bobby Samir Acharya, Y. Pischalnikov, Ulrich Heintz, S. Grünendahl, A. Para, H. Johnstad, T. Yasuda, Jing Li, H. Jöstlein, T. L. Taylor, K. Denisenko, Sergey Chekulaev, D. Norman, Haifeng Li, M. Diesburg, Vyacheslav Klyukhin, H. A. Neal, Ying Li, K. S. Hahn, S. Glenn, J. McKinley, D. A. Stoianova, S. Rusin, S. Willis, D. Cutts, H. C. Shankar, J. T. Linnemann, M. Pang, A. L. Lyon, D. Lincoln, Shuichi Kunori, R. J. Madaras, R. Snihur, B. Gibbard, Eunil Won, Meenakshi Narain, N. Varelas, E. W. Anderson, A. Peryshkin, Heriberto Castilla-Valdez, L. Markosky, D. Owen, I. Adam, P. Rubinov, M. Goforth, J. Tarazi, E. A. Kozlovski, P. Bloom, Greg Landsberg, J. A. Wightman, J. Sculli, S. M. Chang, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, D. Hedin, Allen Mincer, A. Klatchko, H. Haggerty, A. Narayanan, Christina Gao, J. Featherly, V. Glebov, V. A. Bezzubov, N. I. Bojko, Marvin Johnson, T. L. Geld, J. P. Negret, D. Neić, Yanwen Liu, G. Di Loreto, A. V. Kozelov, L. Lueking, R. P. Smith, D. Vititoe, S. Lökös, Michael Shupe, R. J. Genik, C. Klopfenstein, A. L. Read, S. Gao, J. M. Guida, M. Paterno, D. Denisov, Dhiman Chakraborty, M. L. Stevenson, D. Edmunds, J. Yang, J. Wang, Harrison Prosper, A. Baden, V. M. Podstavkov, G. C. Blazey, E. Neis, J. S. Hoftun, J. N. Butler, P. D. Grannis, J. Teiger, Srinivasan Rajagopalan, H. Piekarz, Thomas Ferbel, Dan Green, R. Yamada, S. H. Ahn, M. Fortner, J. Perkins, M. D. Peters, L. Oesch, Orin I. Dahl, John Rutherfoord, James C. Green, P. Yamin, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, P. A. Rapidis, A. Kernan, A. Jonckheere, Stephan Linn, N. Oshima, Daria Zieminska, R. D. Schamberger, A. N. Galjaev, A. Smith, J. F. Lebrat, J. Yu, C. L. Kim, Hiroaki Aihara, P. M. Tuts, R. W. Stephens, W. Y. Chen, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, W. X. Gu, A. A. Mayorov, M. K. Fatyga, Pushpalatha C Bhat, M. Mudan, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, A. Taketani, Y. M. Park, S.A. Kahn, M. Demarteau, R. E. Avery, M. H.G. Souza, P. Yepes, H. E. Montgomery, D. P. Stoker, D. Buchholz, P. Tamburello, Heng Xu, Gregory R Snow, S. Margulies, S. Lami, A. Pluquet, P.F. Ermolov, Yanxi Zhang, V. S. Burtovoi, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, G. Griffin, I. V. Mandrichenko, C. H. Park, H. S. Mao, R. Hernández-Montoya, A. Milder, D. L. Adams, C. Murphy, M. D. Marx, H. D. Wahl, G. Álvarez, J. Kotcher, Allan G Clark, N. Graf, R. E. Lanou, M.K. Fatyga, H. L. Melanson, P. Z. Quintas, J. H. Christenson, and R. K. Shivpuri
Subjects: Physics, Massless particle, Particle physics, Gauge boson, Computer Science::Information Retrieval, Tevatron, General Physics and Astronomy, High Energy Physics::Experiment, Elementary particle, Lambda, Energy (signal processing), Boson, Standard Model
Abstract: The {ital WW}{gamma} gauge boson couplings were measured using {ital p{bar p}}{r_arrow}l{nu}{gamma}+{ital X} (l={ital e},{mu}) events at {radical}{ital s}=1.8 TeV observed with the D0 detector at the Fermilab Tevatron Collider. The signal, obtained from the data corresponding to an integrated luminosity of 13.8pb{sup {minus}1}, agrees well with the standard model prediction. A fit to the photon transverse energy spectrum yields limits at the 95% confidence level on the {ital CP}-conserving anomalous coupling parameters of {minus}1.6{lt}{Delta}{kappa}{lt}1.8 ({lambda}=0) and {minus}0.6{lt}{lambda}{lt}0.6 ({Delta}{kappa}=0). Similar limits are obtained for the {ital CP}-violating coupling parameters.
Published: 1995
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223. Search forWBoson Pair Production inpp¯Collisions ats=1.8TeV

Author: S. Rusin, Pushpalatha C Bhat, M. Bhattacharjee, B. G. Pope, M. Mudan, R. Hirosky, S. Krzywdzinski, L. Markosky, V. I. Kochetkov, S. Margulies, S. Lami, A. Zylberstejn, A. Pluquet, P.F. Ermolov, H. Greenlee, J. Yang, Y. H. Zhou, G. E. Forden, A. P. Heinson, R. E. Hall, A. Bross, Yanxi Zhang, Serban Protopopescu, M. Sosebee, Elizaveta Shabalina, T. L. Taylor, G. Di Loreto, V. S. Burtovoi, K. Streets, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, C. Boswell, A. Baden, Vipin Bhatnagar, J. T. White, J. Alitti, T. McKibben, M. V. S. Rao, J. Bantly, N. Parua, A. Taketani, D. Schmid, G. C. Blazey, R. Astur, T. Heuring, Y. M. Park, W. E. Cooper, L. P. Chen, Daniel R Claes, Alexander Vorobiev, R. Yamada, Andrew White, S. Abachi, Andrew Brandt, Y. E. Gutnikov, R. Engelmann, S.A. Kahn, R. J. Madaras, J. Kourlas, S. P. Denisov, P. Grudberg, R. Snihur, N. Varelas, Suman Bala Beri, A. Bischoff, A. V. Kostritskiy, Sissel Hansen, S. H. Ahn, M. Demarteau, R. E. Avery, V. M. Podstavkov, M. Fortner, R. E. Lanou, D. Buchholz, Bobby Samir Acharya, H. A. Neal, J. Perkins, Alberto Santoro, Seong Keun Kim, D. Denisov, H. C. Shankar, F. Nang, T. Joffe-Minor, C. Yanagisawa, J. T. Linnemann, M.K. Fatyga, Z. R. Wolf, John Hobbs, B. Gibbard, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, J. Sculli, Dan Green, A. Efimov, J. Borders, John Rutherfoord, S. A. Jerger, P. Tamburello, H.E. Miettinen, P. I. Goncharov, Heng Xu, H. E. Fisk, A. Leflat, J. Yu, Ting Hu, M. R. Krishnaswamy, W. Guryn, M. Goforth, Matthew Jones, D. Hedin, W. G. Cobau, M. I. Martin, J. Z.Y. Jiang, J. S. Kang, F. Hsieh, A. R. Clark, J. Solomon, P. A. Rapidis, A. Kernan, A. Jonckheere, B. May, Ph. Mangeot, Mary Beth Adams, K. Bazizi, Young-Sang Yu, C. L. Kim, J. M.R. Roldan, F. Stocker, J. A. Wightman, Hiroaki Aihara, L. T. Goss, S. M. Chang, M. Mohammadi-Baarmand, S. Grünendahl, A. Para, N. I. Bojko, V. A. Bezzubov, J. P. Negret, R. P. Smith, Laurent Chevalier, Stephan Linn, Raymond Brock, Boaz Klima, S. Glenn, J. McKinley, D. A. Stoianova, Stephen Wimpenny, Gregory R Snow, Sergey Chekulaev, N. Oshima, Michael Shupe, T. G. Trippe, S. C. Loken, R. L. McCarthy, S. Gao, P. M. Tuts, H. Johari, V. Balamurali, Yu Fisyak, D. Stewart, Daria Zieminska, D. Norman, James C. Green, R. D. Schamberger, A. N. Galjaev, R. W. Stephens, A. Smith, E. A. Kozlovski, A. Zieminski, B. I. Klochkov, S. Willis, M. Pang, J. Featherly, S. N. Gurzhiev, J. F. Lebrat, B. Gobbi, M. D. Marx, F. Borcherding, Haifeng Li, J. S. Hoftun, J. N. Butler, J. M. Hauptman, Cecilia Elena Gerber, J. Wang, T. Marshall, P. D. Grannis, H. Haggerty, H. D. Wahl, H. Piekarz, M. H.G. Souza, Harrison Prosper, I. Adam, P. Rubinov, V. Glebov, W. Y. Chen, S. Igarashi, I. Bertram, H. E. Montgomery, K. W. Merritt, S. Lökös, Jasvinder A. Singh, Meenakshi Narain, A. Peryshkin, Bruno Mansoulie, Jianming Qian, Paolo Franzini, V. S. Narasimham, S. Youssef, F. Lobkowicz, Q. Z. Li-Demarteau, J. F. Bartlett, Marvin Johnson, D. Vititoe, L. Z. Wang, T. Rockwell, D. P. Stoker, A. A. Mayorov, Darien Wood, H. Johnstad, T. Yasuda, D. Neić, Yanwen Liu, R. L. Dixon, Michael Rijssenbeek, P. Yamin, R. J. Genik, A. V. Kozelov, Robert Kehoe, M. K. Fatyga, C. Klopfenstein, L. Lueking, C. K. Jung, A. Narayanan, J. Balderston, Nicholas John Hadley, Randy Ruchti, V. N. Evdokimov, A. L. Read, J. Warchol, Tong Hu, D.S. Koltick, S. Mani, J. M. Guida, Sarah Catherine Eno, C. S. Mishra, Peter Nemethy, D. Lincoln, Quing Zhu, R. Madden, L. Rasmussen, Vyacheslav Klyukhin, Peter W. Draper, Ying Li, I. V. Mandrichenko, Vasken Hagopian, D. Edmunds, E. Neis, S. Y. Jun, H. Weerts, S. Blessing, Scott Snyder, Eunil Won, B. Baldin, Dhiman Chakraborty, R. Hernández-Montoya, A. Milder, G. Eppley, K. S. Hahn, D. Cutts, C. Murphy, M. D. Peters, M. L. Kelly, J. A. Guida, D. Casey, Howard Gordon, K. C. Frame, O. Ramirez, Greg Landsberg, P. R.G. Virador, L. T. Kerth, Y. Ducros, R. Markeloff, S. Fahey, M. Abolins, A. Zinchenko, S. Fuess, T. L. Geld, P. Mooney, L. Oesch, J. G.R. Lima, M. Paterno, Sharon Hagopian, N. K. Mondal, H. T. Diehl, A. K.A. Maciel, V. Sirotenko, A. Boehnlein, P. M. Sood, E. Oltman, R. K. Shivpuri, O. V. Eroshin, J. Ellison, Victor Daniel Elvira, N. Amos, Y. S. Zhu, A. S. Ito, Rajendran Raja, J. Drinkard, M. Tartaglia, Heriberto Castilla-Valdez, Brad Abbott, Kaushik De, Welathantri Gd Dharmaratna, V. Oguri, W.A. Wenzel, C. Cretsinger, M. Strovink, S. H. Aronson, M. L. Stevenson, E. James, T. Fahland, J. Wilcox, S. Fredriksen, Gilvan Alves, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, Elizabeth Gallas, R. Hatcher, K. Denisenko, A. L. Lyon, Shuichi Kunori, C. T. Murphy, G. Finocchiaro, S. Durston-Johnson, N. Denisenko, S. Reucroft, C. Yoshikawa, W. Smart, K. A. Johns, R. Partridge, E. Flattum, G. Griffin, C. H. Park, H. S. Mao, D. L. Adams, G. Álvarez, J. Kotcher, O. I. Dahl, N. Graf, H. L. Melanson, P. Z. Quintas, J. H. Christenson, C. Milner, T. Huehn, D. Fein, Erich Varnes, J. M. De Miranda, N. Grossman, Jing Li, A. Klatchko, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, E. W. Anderson, N. A. Roe, M. Diesburg, S. Chopra, D. Owen, M. Chung, J. Tarazi, Allen Mincer, Christina Gao, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, B. Gómez, Z. H. Zhu, D. Pueljić, Shashikant Dugad, R. Demina, J. Jaques, Ron Lipton, J. Womersley, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, Nikolai Mokhov, N. N. Biswas, S. Feher, J. Bendich, A. L. Spadafora, and Brajesh C Choudhary
Subjects: Physics, Coupling constant, Gauge boson, Particle physics, High Energy Physics::Phenomenology, General Physics and Astronomy, Lambda, Coupling (probability), Luminosity, Standard Model, Nuclear physics, Pair production, High Energy Physics::Experiment, Bar (unit)
Abstract: The results of a search for W boson pair production in p{bar p} collisions at {radical}s = 1.8 TeV with subsequent decay to dilepton (e{mu}, ee, and {mu}{mu}) channels are presented. One event is observed with an expected background of 0.56 {plus_minus} 0.13 events with an integrated luminosity of approximately 14 pb{sup {minus}1}. Assuming equal strengths for the WWZ and WW{gamma} gauge boson coupling parameters {kappa} and {lambda}, limits on the CP-conserving anomalous coupling constants are {minus}2.6 < {delta}{kappa} < 2.8 and {minus}2.1 {lambda} < 2.1 at the 95% confidence level.
Published: 1995
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224. Search for Squarks and Gluinos inpp¯Collisions ats=1.8TeV

Author: G. Eppley, Stephen Wimpenny, N. Parua, M. Bhattacharjee, J. G.R. Lima, T. Marshall, R. Hirosky, J. Yang, Matthew Jones, Elizabeth Gallas, W. Y. Chen, A. S. Ito, Y. Pischalnikov, Ulrich Heintz, S. A. Jerger, Darien Wood, V. M. Podstavkov, H. Jöstlein, R. Hatcher, A. L. Read, F. Stocker, M. Fortner, D. Buchholz, A. Leflat, T. L. Taylor, Nicholas John Hadley, I. Bertram, Paolo Franzini, J. Kotcher, S. Blessing, V. S. Narasimham, O. I. Dahl, W. G. Cobau, M. I. Martin, J. A. Wightman, M. Diesburg, R. Snihur, N. Graf, J. Perkins, S. Igarashi, S. Rusin, Q. Z. Li-Demarteau, J. S. Kang, Bruno Mansoulie, D. Owen, P. Tamburello, F. Lobkowicz, D. Edmunds, E. Neis, K. S. Hahn, N. I. Bojko, B. May, Ph. Mangeot, A. A. Mayorov, L. Markosky, D. Cutts, Scott Snyder, Heriberto Castilla-Valdez, N. Varelas, K. Streets, Vipin Bhatnagar, Heng Xu, R. Partridge, E. Flattum, Randy Ruchti, G. Griffin, M. Sosebee, C. H. Park, H. S. Mao, J. Tarazi, D. L. Adams, R. Markeloff, L. Z. Wang, M. K. Fatyga, H. L. Melanson, P. Z. Quintas, J. A. Guida, D. Casey, P. A. Rapidis, T. Rockwell, S. M. Chang, S. Gao, J. H. Christenson, A. Kernan, Greg Landsberg, H. Johari, V. Balamurali, R. L. Dixon, B. G. Pope, J. Borders, R. K. Shivpuri, G. Di Loreto, Michael Rijssenbeek, C. Milner, M. D. Peters, J. Alitti, Gregory R Snow, A. Jonckheere, Stephan Linn, Elizaveta Shabalina, S. Fuess, B. Gobbi, J. Bantly, J. Z.Y. Jiang, J. Drinkard, D. Denisov, T. L. Geld, J. T. White, Y. H. Zhou, Rajendran Raja, S. Margulies, N. Oshima, L. Oesch, M. Tartaglia, W. Smart, K. A. Johns, D. Schmid, L. T. Goss, V. N. Evdokimov, J. Teiger, J. Warchol, Daria Zieminska, S. P. Denisov, P. Grudberg, Srinivasan Rajagopalan, Thomas Ferbel, S. Lami, A. Pluquet, Jasvinder A. Singh, G. E. Forden, A. P. Heinson, T. Joffe-Minor, R. D. Schamberger, A. N. Galjaev, A. Smith, J. F. Lebrat, P.F. Ermolov, Kaushik De, D.S. Koltick, C. Klopfenstein, R. L. McCarthy, J. S. Hoftun, J. N. Butler, P. D. Grannis, C. Yanagisawa, M. R. Krishnaswamy, Andrew Brandt, Dan Green, R. Engelmann, K. Denisenko, H. Piekarz, T. McKibben, V. Sirotenko, Yanxi Zhang, H. Johnstad, J. Yu, M. V. S. Rao, T. Yasuda, Brad Abbott, Pushpalatha C Bhat, M. Mudan, J. M. Guida, M. Paterno, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, S. H. Aronson, Alexander Vorobiev, R. E. Hall, H.E. Miettinen, F. Hsieh, V. A. Bezzubov, N. N. Biswas, A. L. Lyon, Shuichi Kunori, M. A.C. Cummings, O. V. Eroshin, V. S. Burtovoi, James Thompson, J. P. Negret, Welathantri Gd Dharmaratna, E. A. Kozlovski, Dhiman Chakraborty, N. A. Roe, H. Haggerty, H. E. Fisk, J. Bendich, A. R. Clark, S. Grünendahl, S. Fredriksen, C. L. Kim, S. Glenn, J. McKinley, D. A. Stoianova, B. Hoeneisen, Lee Sawyer, A. Para, R. P. Smith, S. Chopra, Peter Nemethy, Hiroaki Aihara, I. V. Mandrichenko, F. Borcherding, P. I. Goncharov, W. Guryn, Michael Shupe, T. Huehn, A. Bischoff, S. Lökös, Sergey Chekulaev, R. Astur, S. Youssef, A. V. Kostritskiy, M. Chung, S. Fahey, V. Oguri, T. Heuring, P. M. Tuts, J. Solomon, Y. S. Zhu, C. T. Murphy, A. Taketani, Ting Hu, D. Fein, B. Gibbard, R. W. Stephens, G. Lvarez, C. S. Mishra, A. Milder, Erich Varnes, M. Mohammadi-Baarmand, Robert Kehoe, W.A. Wenzel, D. Vititoe, Y. M. Park, C. Murphy, G. Finocchiaro, J. M. De Miranda, R. J. Madaras, R. J. Genik, J. Sculli, A. Efimov, Sharon Hagopian, Sissel Hansen, W. E. Cooper, J. Balderston, S.A. Kahn, L. P. Chen, Daniel R Claes, M. L. Stevenson, J. Wang, Harrison Prosper, M. Demarteau, R. E. Avery, S. Durston-Johnson, Haifeng Li, A. Zieminski, A. K.A. Maciel, T. G. Trippe, S. C. Loken, Sarah Catherine Eno, Andrew White, D. Pueljić, Vasken Hagopian, H. Weerts, D. Lincoln, N. Denisenko, S. Reucroft, Yu Fisyak, N. Grossman, E. Oltman, F. Nang, C. Boswell, Eunil Won, Meenakshi Narain, A. Peryshkin, M. H.G. Souza, B. I. Klochkov, R. E. Lanou, C. Yoshikawa, D. Stewart, S. N. Gurzhiev, M. L. Kelly, S. Abachi, Jing Li, M.K. Fatyga, Suman Bala Beri, S. Y. Jun, Vyacheslav Klyukhin, H. E. Montgomery, Howard Gordon, K. C. Frame, Z. R. Wolf, Y. E. Gutnikov, B. Baldin, C. K. Jung, P. R.G. Virador, S. Krzywdzinski, N. Amos, O. Ramirez, L. T. Kerth, A. Narayanan, K. Bazizi, Ying Li, H. Schellman, Y. Ducros, J. Kourlas, Quing Zhu, V. I. Kochetkov, Bobby Samir Acharya, H. A. Neal, I. Adam, P. Rubinov, A. Zylberstejn, D. P. Stoker, J. M.R. Roldan, P. Yamin, H. C. Shankar, J. T. Linnemann, D. Hedin, K. W. Merritt, A. Baden, H. Greenlee, J. F. Bartlett, G. C. Blazey, John Hobbs, E. Amidi, M. Goforth, J. V.D. Wirjawan, A. Bross, J. R. T. de Mello Neto, D. Neić, Yanwen Liu, M. D. Marx, H. D. Wahl, R. Yamada, Victor Daniel Elvira, Raymond Brock, R. Hernndez-Montoya, Serban Protopopescu, L. Lueking, Young-Sang Yu, S. H. Ahn, Boaz Klima, T. Fahland, M. Abolins, A. Zinchenko, P. Mooney, S. Mani, John Rutherfoord, J. Wilcox, D. Norman, N. K. Mondal, H. T. Diehl, Alberto Santoro, S. Willis, M. Pang, J. Featherly, V. Glebov, A. Boehnlein, P. M. Sood, Marvin Johnson, J. Ellison, P. Padley, Alexey Volkov, Seong Keun Kim, A. Klatchko, James C. Green, R. Madden, J. M. Hauptman, Cecilia Elena Gerber, L. Rasmussen, Peter W. Draper, A. V. Kozelov, James H Cochran, Mitchell Wayne, J. M. Kohli, Jianming Qian, J. Jaques, Tong Hu, C. Cretsinger, Ron Lipton, M. Strovink, E. James, B. Gómez, Z. H. Zhu, Shashikant Dugad, J. Womersley, Gilvan Alves, Nikolai Mokhov, R. Demina, Mark Raymond Adams, S. Feher, E. W. Anderson, A. L. Spadafora, Brajesh C Choudhary, Allen Mincer, Christina Gao, and Laurent Chevalier
Subjects: Physics, Particle decay, Particle physics, Gluino, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Superpartner, High Energy Physics::Experiment, Supersymmetry, Standard Model, Gluon, Minimal Supersymmetric Standard Model
Abstract: We present a search for events consistent with the production and decay of the squarks and gluinos of the minimal supersymmetric standard model (MSSM) in the D0 detector at the Fermilab Tevatron {ital p{bar p}} collider. We examined data for events containing large missing transverse energy and three or more jets. We observed no excess of events above the expected yield from standard model processes. For a choice of MSSM parameter values, we set a lower limit at the 95% confidence level on the mass of the gluino of 144 GeV/{ital c}{sup 2} for all squark masses and a lower limit of 212 GeV/{ital c}{sup 2} for equal squark and gluino masses.
Published: 1995
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225. Optimal control of a removable and non-reliable server in a markovian queueing system with finite capacity

Author: W.-F. Hsieh and Kuo-Hsiung Wang
Subjects: Engineering, Mathematical optimization, Exponential distribution, Expected cost, business.industry, Real-time computing, Markov process, Queueing system, Condensed Matter Physics, Optimal control, Atomic and Molecular Physics, and Optics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, symbols.namesake, symbols, Electrical and Electronic Engineering, Safety, Risk, Reliability and Quality, business, Queue
Abstract: This paper studies the economic behavior of a removable and non-reliable server in an Markovian queueing system with finite capacity under steady-state conditions. The removable server applies the N policy which turns the server on when the queue length reaches the value N , and turns the server off when the system is empty. The server may break down only if operating and require repair at a repair facility. Interarrival and service times of the customers, and breakdown and repair times of the server, are assumed to follow a negative exponential distribution. A cost model is developed to determine the optimal operating N policy numerically in order to minimize the total expected cost per unit time.
Published: 1995
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226. Effects of soy fiber, salt, sugar and screw speed on physical properties and microstructure of corn meal extrudate

Author: H.E Huff, F Hsieh, and Z Jin
Subjects: Materials science, Absorption of water, Aqueous solution, Volume (thermodynamics), Mineralogy, Extrusion, Die swell, Fiber, Food science, Sugar, Microstructure, Biochemistry, Food Science
Abstract: The physical properties and microstructure of corn meal extruded with soy fiber, salt, and sugar were studied using an intermeshing and co-rotating twin-screw extruder. The effects of fiber, sugar and screw speed on water absorption index (WAI) and water solubility index (WSI) correlated well with bulk density and specific volume of extrudates. Increasing screw speed decreased WAI but increased WSI. Increasing fiber content from 0–20% lowered the WAI, but increased the WSI. The trends were reversed with further increases in fiber content. An increase in the sugar content reduced WSI. Scanning electron microscopy revealed that increasing fiber, sugar contents, and screw speed resulted in less expanded extrudates with smaller air cell size and thicker cell walls. The breaking strength increased with increasing sugar and fiber contents and was negatively correlated with the radial expansion of extrudates. Salt (0–2%) had no significant effects on the WAI, WSI, and microstructure of extrudates.
Published: 1995
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227. Mechanical properties of extruded high amylose starch for loose-fill packaging material

Author: H.E. Huff, E. Iannotti, M.H. Parsons, F. Hsieh, and Y. Lin
Subjects: chemistry.chemical_classification, Universal testing machine, Materials science, Water activity, Starch, Moisture sorption isotherm, Plastics extrusion, Salt (chemistry), chemistry.chemical_compound, Compressive strength, chemistry, Amylose, Polymer chemistry, Composite material, Food Science
Abstract: Extrudates of corn starch containing 700g/kg amylose, which may have potential as a loose-fill packaging material, were prepared using an APV Baker MPF50/25 twin-screw extruder. Their moisture sorption isotherm was established by equilibrating them over saturated salt solutions at 25°C. The salts used and their water activities (in parentheses) were: LiCl (0.11), CH 3 COOK (0.23), MgCl 2 (0.33), K 2 CO 3 (0.42), Mg(NO 3 ) staggered2 (0.53), NaNO 2 (0.63), and NaCl (0.75). Energy index (3–19.3 N·m/m 3 ), compressive strength (34–162 kPa), and spring index (58–79%) of the packaging materials were determined from their stress-strain curve using the Instron Universal Testing Machine with a data acquisition system. Both energy index and compressive strength increased with increasing water activity levels up to 0.53 and then decreased. The spring indices were not present at water activities 0.11 and 0.23, and behaved in a similar manner to compressive strength at higher water activities.
Published: 1995
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228. Processing and properties of amaranth cake

Author: Rawin Cheasagul, H. Huff, and F. Hsieh
Subjects: chemistry.chemical_compound, Horticulture, Engineering, Agronomy, chemistry, business.industry, Aerospace Engineering, Amaranth, business
Published: 2012
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229. A Novel Surface Nano-Structure Design for SiGe/Si Type-II Hetero-Junction Solar Cell

Author: S. C. Kao, Li Chang, Chiung-Mei Chen, C. F. Hsieh, Ming-Han Liao, and Chun Hui Yang
Subjects: Surface (mathematics), Materials science, law, Solar cell, Nano, Structure design, Nanotechnology, law.invention
Published: 2012
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230. Impact of Strain Engineering on Nanoscale Ge PMOSFET

Author: B.-F. Hsieh, M.-H. Huang, and Shu-Tong Chang
Subjects: Electron mobility, Materials science, business.industry, Transistor, Electrical engineering, Hardware_PERFORMANCEANDRELIABILITY, law.invention, Stress (mechanics), Strain engineering, Nanoelectronics, CMOS, law, MOSFET, Hardware_INTEGRATEDCIRCUITS, Optoelectronics, business, Metal gate
Abstract: The stress distributions in strained Ge PMOSFETs with high-k dielectric layer, metal gate, and GeSn alloy S/D stressors were studied. It was found that the geometric effects, such as channel width and length, could impact the achievable transistor performance gains. The resulted mobility improvement was analyzed by Kubo-Greenwood formula. This work helps the future Ge-based CMOS device design and demonstrates that strain engineering is important for the future nanoscale device technology.
Published: 2012
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231. The Optimization of SiGe Hetero-Structure Thin-Film Solar Cell by the Theoretical Calculation and Quantitative Analysis

Author: You Yin Chen, Min-Sheng Liao, C.-F. Hsieh, Ci-Hua Chen, Li-Chen Chang, and Chih-Chung Yang
Subjects: Theory of solar cells, Materials science, Silicon, business.industry, chemistry.chemical_element, law.invention, Silicon-germanium, chemistry.chemical_compound, Solar cell efficiency, chemistry, law, Solar cell, Electronic engineering, Optoelectronics, business, Short circuit, Current density, Voltage
Abstract: The characteristics of SiGe hetero-structure solar cell such as short circuit current density (Jsc), open-circuit voltage (Voc), fill factor (FF), and efficiency with optimal Ge concentration are investigated in this work. The average Ge concentration was systematically changed in the range from 0% to 30%. The appropriate addition of Ge in crystal Si solar cell is an effective way to increase the short circuit current density, without affecting on the open-circuit voltage, due to the modulation of the material band-gap and hetero-structure. Therefore, the solar cell efficiency can be further improved. With the optimization of Ge concentration and clean process condition, the overall efficiency of a Si0.9Ge0.1 solar cell is found to be improved about ~4% than it in the control Si solar cell. The band-gap of the SiGe material, the key parameter for the solar cell design, can be extracted by an Electron-Hole Plasma (EHP) model at different temperatures. Finally, the SiGe-based solar cell has also been observed that it has less operated temperature sensitivity than Si solar cell for the real application. The theoretical calculation and simulation in this work can help us to understand and engineer the high-efficiency SiGe solar cell qualitatively
Published: 2012
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232. Relationship of initial glucose level and all-cause death in patients with ischaemic stroke: the roles of diabetes mellitus and glycated hemoglobin level

Author: G-C, Hu, S-F, Hsieh, Y-M, Chen, H-H, Hsu, Y-N, Hu, and K-L, Chien
Subjects: Aged, 80 and over, Blood Glucose, Glycated Hemoglobin, Male, Incidence, Middle Aged, Stroke, Survival Rate, Cardiovascular Diseases, Risk Factors, Cause of Death, Hyperglycemia, Diabetes Mellitus, Humans, Regression Analysis, Female, Aged, Follow-Up Studies, Retrospective Studies
Abstract: Previous studies demonstrated that post-stroke hyperglycemia was associated with poor outcome in non-diabetic patients. However, evidence was inconclusive amongst patients with diabetes. The aim of this study was to evaluate the relationship between initial glucose levels and mortality amongst patients with acute ischaemic stroke, and further, to assess whether the association varied by diabetes mellitus and glycated hemoglobin (HbA(1c) ) levels. Data were collected from the medical records of 1277 first-ever stroke patients admitted to the emergency room between January 1, 2008 and June 30, 2009. Cox regression analysis was performed to assess the relationship between initial glucose level and mortality.Compared with the lowest quartile of initial glucose level, a significant association with all-cause death [hazard ratio (HR), 2.18; 95% CI, 1.36-3.48] and cardiovascular death (HR, 1.91; 95% CI, 1.01-3.61) was seen in the highest quartile. In non-diabetic subgroup, those patients within the highest quartile of initial glucose level had a 3.29-fold relative risks (RR) [95% confidence interval (CI), 1.62-6.68] for all-cause and a 2.54-fold RR (95% CI, 1.43-8.77) for cardiovascular death compared with those within the lowest quartile. However, the association between initial glucose levels and the risk of death was not significant amongst those with diabetes (P for interaction = 0.01). In addition, the risk amongst patients with diabetes varied by the HbA(1c) levels. A significant association was confirmed between initial glucose level and mortality in non-diabetic ischaemic stroke patients. The possible relationship between initial glucose level, HbA(1c) level, and mortality amongst ischaemic stroke patients with diabetes warrants further research.
Published: 2012

233. Nano-textured photonic crystal light-emitting diodes and solar cells

Author: Chiung-Mei Chen, Ming-Han Liao, C. F. Hsieh, Chun Hui Yang, S. C. Kao, and Li Chang
Subjects: Materials science, business.industry, law, Nano, Optoelectronics, Nanotechnology, business, Photonic crystal, Light-emitting diode, law.invention
Published: 2012
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234. Optimal Si-SiGe hetero-structure thin-film solar cell with theoretical calculation and quantitative analysis

Author: C. F. Hsieh, Chiung-Mei Chen, S. C. Kao, Ming-Han Liao, Chia-Ming Yang, and Li Chang
Subjects: Materials science, business.industry, Structure (category theory), Optoelectronics, Thin film solar cell, business, Quantitative analysis (chemistry)
Published: 2012
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235. SiGe Quantum Well Metal-Insulator-Semiconductor Light-Emitting Diodes

Author: S. C. Kao, Ming-Han Liao, C. F. Hsieh, Chun Hui Yang, Li Chang, and Chiung-Mei Chen
Subjects: Materials science, Semiconductor, business.industry, law, Optoelectronics, Nanotechnology, Metal insulator, business, Quantum well, Light-emitting diode, law.invention
Published: 2012
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236. The investigation on Dislocation Edge Stress Effects for Si N-MOSFETs

Author: C. F. Hsieh, Chiung-Mei Chen, Chun Hui Yang, S. C. Kao, Li Chang, and Ming-Han Liao
Subjects: Crystallography, Materials science, Stress effects, Condensed matter physics, Edge (geometry), Dislocation
Published: 2012
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237. Extrudate Characterization by Image Processing

Author: F. Hsieh, Jinglu Tan, and X. Gao
Subjects: Materials science, business.industry, Process (computing), Pattern recognition, Image processing, Surface finish, Die swell, Texture (geology), Product (mathematics), Extrusion, Artificial intelligence, business, Food Science, Hue
Abstract: Image processing techniques were used to characterize an extruded food product. Several image features in color and surface texture were developed and tested for their effectiveness to reflect changes in product appearance resulting from variations in extrusion conditions. The effects of process variables were related to the image features. Hue function conveyed more information about surface texture than did saturation or intensity functions.
Published: 1994
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238. NEW MELT CONVEYING MODELS FOR A SINGLE SCREW EXTRUDER

Author: F. Hsieh and Y. Li
Subjects: Physics::Fluid Dynamics, Materials science, Wall effect, General Chemical Engineering, Numerical analysis, Flow (psychology), Plastics extrusion, Newtonian fluid, Extrusion, Boundary value problem, Mechanics, Food Science, Volumetric flow rate
Abstract: The flow theory in an extruder is fundamental to the study of extrusion technology. Present analytical solutions of the flow theory used in many studies give significant overpredictions of the volumetric flow rate due to erroneous boundary conditions used. Modified flat plate models with and without considering side wall effect and a coaxial cylinder model for Newtonian fluids were derived in this study using new boundary conditions confirmed by Choo et al. (1980). Using experimental data from published literature, it was found that the volumetric flow rates in the extruder were better predicted by these models than the numerical solutions or the original analytical solutions.
Published: 1994
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239. Barrel-Valve Assembly Affects Twin-Screw Extrusion Cooking of Corn Meal

Author: F. Hsieh, M. Liang, L. Hu, and H.E. Huff
Subjects: Extrusion cooking, business.product_category, Materials science, Plastics extrusion, Barrel (horology), Mineralogy, Die swell, Closed position, Die (manufacturing), Extrusion, Composite material, business, Body orifice, Food Science
Abstract: The effects of a barrel-valve assembly on extrusion system dynamics and product properties with various screw speeds and specific feeding loads (SFL) were studied using an APV Baker twin-screw extruder. Turning the barrel-valve from the open to closed position resulted in a convex response of die pressure due to the axial offset of paired orifice plugs, with concomitant changes in system responses and extrudate properties. Variations in SFL by changing feed rate or screw speed caused more pronounced effects on product properties compared with barrel-valve control.
Published: 1994
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240. System analysis as the basis for control of density of extruded cornmeal

Author: S.J. Mulvaney, F. Hsieh, and C.I. Onwulata
Subjects: Moisture, business.industry, Plastics extrusion, Specific mechanical energy, Volume (thermodynamics), Product (mathematics), Torque, Extrusion, Process engineering, business, Water content, Food Science, Biotechnology, Mathematics
Abstract: The increase in the use of twin-screw extruders for the production of directly expanded products can be attributed to the unique versatility of this machine and the products that may be produced with it. However, complex relationships between process inputs, system variables and unmeasurable product quality attributes make control of the process difficult. Understanding the effects of particular inputs on product properties will improve the general understanding of the fundamental phenomenon underlying the extrusion process. Using a system analysis approach, the effect of moisture and screw speed on percentage torque, specific mechanical energy (SME), product temperature and die pressure was determined. Corn meal was adjusted to 16%, 19% and 22% moisture and extruded at 200, 300 and 400 rev./min in an APV-Baker MPF 50, twin-screw extruder. Extrudates were characterized by their specific volume, longitudinal expansion index (LEI) and sectional expansion index (SEI). SME could be described as a linear combination of moisture and screw speed. Product temperature was highly correlated with SME regardless of whether changes in SME were a result of changes in moisture or screw speed. However, specific volume was found to be a function of both SME and moisture content. Longitudinal expansion was linearly correlated with SME alone, whereas radial expansion was not correlated with SME input. Based on these results, an algorithm for indirect control of specific volume was developed based on on-line measurement of SME and calculation of the actual in-barrel moisture content.
Published: 1994
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241. Modeling of twin-screw extrusion cooking of corn meal and sugar beet fiber mixtures

Author: F. Hsieh, H.E. Huff, and S. Lue
Subjects: Absorption of water, Materials science, biology, Starch, Plastics extrusion, Specific mechanical energy, biology.organism_classification, chemistry.chemical_compound, Volume (thermodynamics), chemistry, Sugar beet, Particle size, Fiber, Food science, Food Science
Abstract: A statistical model was established for extrusion cooking of corn meal and sugar beet fiber mixtures in a twin-extruder. The operational variables included screw speed of the extruder, addition level of sugar beet fiber and fiber particle size. Specific mechanical energy (SME) input, product temperature (T), pressure before die (DP) and gelatinized starch content (GS) were measured and used to characterize the physical and chemical properties of extrudates. The results showed that these predictor variables could explain 79–96% of the variations in product length, diameter, specific volume, breaking strength and water absorption index. Color attributes of the product also depended on the fiber particle size. It showed that the empirical model proposed by Meuser and coworkers is applicable to the complex food system.
Published: 1994
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242. Barrel-valve Assembly: Its Influence on Residence Time Distribution and Flow Pattern in a Twin-screw Extruder

Author: L. Hu, M. Liang, F. Hsieh, and H. E. Huff
Subjects: Materials science, Flow (psychology), Plastics extrusion, Barrel (horology), Mechanical engineering, Residence time distribution, Agricultural and Biological Sciences (miscellaneous), Degree (temperature), law.invention, law, Extrusion, Composite material, Spark plug, Body orifice
Abstract: The effect of a barrel-valve assembly on the residence time distribution (RTD), degree of fill, and flow pattern in an intermeshing, co-rotating twin-screw extruder was studied at 300450 rpm screw speeds and 0.0026 to 0.0038 kg/rev specific feeding loads. Increasing the orifice plug size or decreasing the opening of the barrel valve slightly increases the mean residence time, RTD spread, and extruder fill level. The inclusion and variation of the barrel-valve assembly in the extruder does not change the dimensionless dispersion and flow behavior. Both residence time and RTD spread are decreased significantly (P < 0.001) with the increasing screw speed and specific feeding load, while degree of fill is decreased with the former but increased with the latter. The flow analysis indicated a 70~75% of plug-flow behavior was exhibited in the extrusion system. Regression models for predicting RTD parameters and extruder degree of fill were developed.
Published: 1994
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243. Crystal growth and optical characterizations of nonpolar m-plane ZnO on the m-plane sapphire substrate by PLD

Author: C. C. Kuo, C. H. Hsu, W. F. Hsieh, B. H. Lin, and W. R. Liu
Subjects: Materials science, Plane (geometry), business.industry, Sapphire substrate, Optoelectronics, Crystal growth, business
Published: 2011
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244. Thermal tides on a hot Jupiter

Author: H.-F. Hsieh and P.-G. Gu
Subjects: Physics, QC1-999, Rossby wave, Astrophysics, Internal wave, symbols.namesake, Fourier transform, Excited state, Hot Jupiter, Thermal, symbols, Irradiation, Astrophysics::Earth and Planetary Astrophysics, Kelvin wave
Abstract: Following the linear analysis laid out by Gu & Ogilvie 2009 (hereafter GO09), we investigate the dynamical response of a non-synchronized hot Jupiter to stellar irradiation. Besides the internal and Rossby waves considered by GO09, we study the Kelvin waves excited by the diurnal Fourier harmonic of the prograde stellar irradiation. We also present a 2-dimensional plot of internal waves excited by the semi- diurnal component of the stellar irradiation and postulate that thermal bulges may arise in a hot Jupiter. Whether our postulation is valid and is consistent with the recent results from Arras & Socrates (2009b) requires further investigation.
Published: 2011

245. Sesamin ameliorates oxidative stress and mortality in kainic acid-induced status epilepticus by inhibition of MAPK and COX-2 activation

Author: Kee-Ching Jeng, Chien-Wei Hou, Mei Lin Shen, Ming-Hong Chang, Peiyuan F Hsieh, Ching-Huei Lin, Ya-Yun Chao, Szu-Pei Wu, Yu-Fen Peng, and Pei-Wun Yao
Subjects: Male, Antioxidant, medicine.medical_treatment, Pharmacology, medicine.disease_cause, Antioxidants, lcsh:RC346-429, Rats, Sprague-Dawley, Lipid peroxidation, Mice, chemistry.chemical_compound, sesamin, Sesamin, Sesamolin, Status epilepticus, chemistry.chemical_classification, reactive oxygen species, Behavior, Animal, biology, General Neuroscience, Malondialdehyde, superoxide dismutase, nitric acid, Neuroprotective Agents, Biochemistry, Neurology, BV-2 cells, Cell Survival, Immunology, Dioxoles, Lignans, Superoxide dismutase, Cellular and Molecular Neuroscience, medicine, Animals, lcsh:Neurology. Diseases of the nervous system, Reactive oxygen species, Cyclooxygenase 2 Inhibitors, Research, PC12 cells, COX-2, Rats, Enzyme Activation, Oxidative Stress, chemistry, Cyclooxygenase 2, mitogen-activated protein kinases, biology.protein, Lipid Peroxidation, thiobarbituric acid reactive substances, rhoA GTP-Binding Protein, kainic acid, Oxidative stress
Abstract: Background Kainic acid (KA)-induced status epilepticus (SE) was involved with release of free radicals. Sesamin is a well-known antioxidant from sesame seeds and it scavenges free radicals in several brain injury models. However the neuroprotective mechanism of sesamin to KA-induced seizure has not been studied. Methods Rodents (male FVB mice and Sprague-Dawley rats) were fed with sesamin extract (90% of sesamin and 10% sesamolin), 15 mg/kg or 30 mg/kg, for 3 days before KA subcutaneous injection. The effect of sesamin on KA-induced cell injury was also investigated on several cellular pathways including neuronal plasticity (RhoA), neurodegeneration (Caspase-3), and inflammation (COX-2) in PC12 cells and microglial BV-2 cells. Results Treatment with sesamin extract (30 mg/kg) significantly increased plasma α-tocopherol level 50% and 55.8% from rats without and with KA treatment, respectively. It also decreased malondialdehyde (MDA) from 145% to 117% (p = 0.017) and preserved superoxide dismutase from 55% of the vehicle control mice to 81% of sesamin-treated mice, respectively to the normal levels (p = 0.013). The treatment significantly decreased the mortality from 22% to 0% in rats. Sesamin was effective to protect PC12 cells and BV-2 cells from KA-injury in a dose-dependent manner. It decreased the release of Ca2+, reactive oxygen species, and MDA from PC12 cells. Western blot analysis revealed that sesamin significantly reduced ERK1/2, p38 mitogen-activated protein kinases, Caspase-3, and COX-2 expression in both cells and RhoA expression in BV-2 cells. Furthermore, Sesamin was able to reduce PGE2 production from both cells under KA-stimulation. Conclusions Taken together, it suggests that sesamin could protect KA-induced brain injury through anti-inflammatory and partially antioxidative mechanisms.
Published: 2011

246. Corn Meal Extrusion with Emulsifier and Soybean Fiber

Author: H.E. Huff, L. Hu, and F. Hsieh
Subjects: Chemistry, food and beverages, Astrophysics::Cosmology and Extragalactic Astrophysics, Specific mechanical energy, Monoglyceride, Screw speed, Monoacylglycerol lipase, chemistry.chemical_compound, nervous system, Corn meal, Corn flour, Astrophysics::Solar and Stellar Astrophysics, Extrusion, Astrophysics::Earth and Planetary Astrophysics, Fiber, Food science, Astrophysics::Galaxy Astrophysics, Food Science
Abstract: Twin-screw extrusion of corn meal with monoacylglycerol (MAG) and soy fiber was investigated. The treatment variables studied were MAG and soy fiber contents, screw speed, and feed rate. MAG addition reduced torque, specific mechanical energy, and dough temperature, but increased die pressure. The significant increase in die pressure was caused by an increased length in filled flights. Die pressure and dough mass temperature increased with soy fiber addition at lower MAG contents ( 0.4 g/100 g). Moreover, MAG-starch complexation increased with MAG addition but was impeded by soy fiber addition.
Published: 1993
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247. The Dependence of the Etching Properties of Illuminated InAs , GaP , and Other III – V Semiconductors in Concentrated HCl Solutions on the Formation of Chloro Complexes

Author: Han C. Shih, C. C. Yeh, and H. F. Hsieh
Subjects: Aqueous solution, Valence (chemistry), Renewable Energy, Sustainability and the Environment, business.industry, Chemistry, Scanning electron microscope, Inorganic chemistry, Photoelectrochemistry, chemistry.chemical_element, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Semiconductor, Electrode, Materials Chemistry, Electrochemistry, Gallium, business, Dissolution
Abstract: The influence of complex formation on the etching characteristics of illuminated InP and GaAs in HCl solutions has previously been considered. To further examine the effect of complex formation, the etching behavior of InAs and GaP in HCl under illumination has been investigated in this work. In the case of InAs, the dissolution rate in HCl solutions increase dramatically with an increase in acid concentration above 6M, and the In I -In III mixed valence chloro compounds were found on the oxidized surface. In contrast, the dissolution of GaP was severely restricted, even in the most acidic solutions, and no gallium chloro compounds were formed
Published: 1993
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248. Model and strategies for computer control of a twin-screw extruder

Author: Q. Lu, H.E. Huff, S.J. Mulvaney, and F. Hsieh
Subjects: business.product_category, Materials science, Plastics extrusion, Process (computing), Twin screw extruder, Transfer function, Computer control, Control theory, Overshoot (signal), Die (manufacturing), Extrusion, business, Food Science, Biotechnology
Abstract: The dynamics of twin-screw extrusion of corn meal was studied. Second-order transfer functions with numerator dynamics were used to model the dynamic responses of process variables to step changes in extruder operating parameters. Step changes in screw speed, feed rate and barrel temperature set-point caused inverse responses in die pressure and motor torque. Overshoot responses were found for die pressure and motor torque to step changes in feed moisture. Product temperature always displayed an over-damped second-order response for step changes of all extruder operating parameters. These models were validated and the implications of using these models for computer control of a twin-screw extruder were discussed.
Published: 1993
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249. Nanofabrication on InP using focused ion beam lithography and Cl2 etching: process and control

Author: H. H. Wade, R. A. Hamm, Henryk Temkin, C. H. Chu, Y. F. Hsieh, Yuh-Lin Wang, and Lloyd R. Harriott
Subjects: Materials science, Ion beam, business.industry, Condensed Matter Physics, Focused ion beam, Nanolithography, Optics, Etching (microfabrication), General Materials Science, Thin film, business, Lithography, Molecular beam, Molecular beam epitaxy
Abstract: A finely focused ion beam (FIB) of Ga + was used to write patterns with nanometer lateral dimensions on InP substrate that are covered with ultrathin oxide layers. Patterns were transferred into the substrates, several hundred nanometers deep, by Cl 2 etching to form nanostructures. Metal-organic molecular beam epitaxy (MOMBE) was employed to regrow on the patterned substrates and create fully buried quantum wire structures. Several process parameters of the FIB vacuum lithography that are essential to the control of the ultimate achievable feature size, were examined and optimized systematically. These parameters include quality of the oxide layers; energy, diameter and dose of the ion beam; rate and depth of the etching; orientation of the desired structure with respect to the substrate; and line pitch of the patterns. Under optimal process conditions, gratings with line width and spacings as small as 50 nm were fabricated.
Published: 1993
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250. Significant association between genetic polymorphisms of ppar delta and ischemic stroke

Author: H. Chiou, Y. Chen, F. Hsieh, Y. Hsieh, J. Jeng, L. Lien, H. Lin, C. Hu, and G. Peng
Subjects: Cardiology and Cardiovascular Medicine
Published: 2014
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