Author: "Quing Zhu" - Searchworks@Jio Institute Digital Library Search Results

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531 results on '"Quing Zhu"'

201. 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

202. 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

203. 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

204. 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

205. 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

206. Recognition algorithm for assisting ovarian cancer diagnosis from coregistered ultrasound and photoacoustic images: ex vivo study

Author: Andres Aguirre, Umar Alqasemi, Quing Zhu, and Patrick D. Kumavor
Subjects: Pathology, medicine.medical_specialty, Computer science, Research Papers: Imaging, Biomedical Engineering, Sensitivity and Specificity, Pattern Recognition, Automated, Biomaterials, Photoacoustic Techniques, symbols.namesake, Elasticity Imaging Techniques, Artificial Intelligence, Image Interpretation, Computer-Assisted, medicine, Gaussian function, Humans, Ovarian Neoplasms, Artificial neural network, Radon transform, business.industry, Wavelet transform, Reproducibility of Results, Pattern recognition, Image Enhancement, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Support vector machine, Fourier transform, symbols, Female, Artificial intelligence, business, Algorithms
Abstract: Unique features and the underlining hypotheses of how these features may relate to the tumor physiology in coregistered ultrasound and photoacoustic images of ex vivo ovarian tissue are introduced. The images were first compressed with wavelet transform. The mean Radon transform of photoacoustic images was then computed and fitted with a Gaussian function to find the centroid of a suspicious area for shift-invariant recognition process. Twenty-four features were extracted from a training set by several methods, including Fourier transform, image statistics, and different composite filters. The features were chosen from more than 400 training images obtained from 33 ex vivo ovaries of 24 patients, and used to train three classifiers, including generalized linear model, neural network, and support vector machine (SVM). The SVM achieved the best training performance and was able to exclusively separate cancerous from non-cancerous cases with 100% sensitivity and specificity. At the end, the classifiers were used to test 95 new images obtained from 37 ovaries of 20 additional patients. The SVM classifier achieved 76.92% sensitivity and 95.12% specificity. Furthermore, if we assume that recognizing one image as a cancer is sufficient to consider an ovary as malignant, the SVM classifier achieves 100% sensitivity and 87.88% specificity.
Published: 2012

207. 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

208. 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

209. Classification and analysis of human ovarian tissue using full field optical coherence tomography

Author: Melinda Sanders, Quing Zhu, and Sreyankar Nandy
Subjects: Pathology, medicine.medical_specialty, medicine.diagnostic_test, Ovarian tissue, Full field, 01 natural sciences, Article, Atomic and Molecular Physics, and Optics, 010309 optics, 03 medical and health sciences, 0302 clinical medicine, Optical coherence tomography, 030220 oncology & carcinogenesis, 0103 physical sciences, Photoacoustic tomography, medicine, Image histogram, Biotechnology, Biomedical engineering, Mathematics
Abstract: In this study, a full field optical coherence tomography (FFOCT) system was used to analyze and classify normal and malignant human ovarian tissue. 14 ovarian tissue samples (7 normal, 7 malignant) were imaged with the FFOCT system and five features were extracted by analyzing the normalized image histogram from 56 FFOCT images, based on the differences in the morphology of the normal and malignant tissue samples. A generalized linear model (GLM) classifier was trained using 36 images, and sensitivity of 95.3% and specificity of 91.1% was obtained. 20 images were used to test the model, and a sensitivity of 91.6% and specificity of 87.7% was obtained.
Published: 2016

210. 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

211. 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

212. 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

213. 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

214. 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

215. 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

216. Automated data selection method to improve robustness of diffuse optical tomography for breast cancer imaging

Author: Quing Zhu and Hamed Vavadi
Subjects: Data processing, Computer science, business.industry, Tissue characterization, Iterative reconstruction, medicine.disease, 01 natural sciences, Article, Atomic and Molecular Physics, and Optics, Diffuse optical imaging, 010309 optics, Automated data, 03 medical and health sciences, 0302 clinical medicine, Breast cancer, 030220 oncology & carcinogenesis, 0103 physical sciences, Outlier, medicine, Computer vision, Artificial intelligence, business, Biotechnology, Statistical hypothesis testing
Abstract: Imaging-guided near infrared diffuse optical tomography (DOT) has demonstrated a great potential as an adjunct modality for differentiation of malignant and benign breast lesions and for monitoring treatment response of breast cancers. However, diffused light measurements are sensitive to artifacts caused by outliers and errors in measurements due to probe-tissue coupling, patient and probe motions, and tissue heterogeneity. In general, pre-processing of the measurements is needed by experienced users to manually remove these outliers and therefore reduce imaging artifacts. An automated method of outlier removal, data selection, and filtering for diffuse optical tomography is introduced in this manuscript. This method consists of multiple steps to first combine several data sets collected from the same patient at contralateral normal breast and form a single robust reference data set using statistical tests and linear fitting of the measurements. The second step improves the perturbation measurements by filtering out outliers from the lesion site measurements using model based analysis. The results of 20 malignant and benign cases show similar performance between manual data processing and automated processing and improvement in tissue characterization of malignant to benign ratio by about 27%.
Published: 2016

217. 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

218. Inclusiveμandb-Quark Production Cross Sections inpp¯Collisions at√s=1.8TeV

Author: N. A. Roe, S. Chopra, N. I. Bojko, M. Chung, D. Buchholz, I. Manning, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, C. Cretsinger, M. Strovink, E. James, Gilvan Alves, Y. H. Zhou, P. Tamburello, Heng Xu, G. E. Forden, A. P. Heinson, I. Bertram, N. N. Biswas, G. Finocchiaro, J. Featherly, D. Pizzuto, V. Glebov, Marvin Johnson, R. P. Xie, Gregory R Snow, A. V. Kozelov, J. Bendich, J. Yu, R. E. Hall, Laurent Chevalier, Stephen Wimpenny, S. Margulies, Bruno Mansoulie, F. Lobkowicz, J. R. Hubbard, W. Guryn, M. Tartaglia, J. Jaques, S. Lami, J. A. Guida, D. Casey, A. Pluquet, P.F. Ermolov, B. Pi, S. P. Denisov, P. Grudberg, A. Baden, S. Fuess, Ron Lipton, L. Z. Wang, R. L. Dixon, Yanxi Zhang, Michael Rijssenbeek, T. Huehn, T. Marshall, J. S. Hoftun, J. N. Butler, P. D. Grannis, J. Womersley, M. Sosebee, V. S. Burtovoi, C. L. Kim, G. C. Blazey, Ulrich Heintz, D. Fein, J. M. Hauptman, A. Kernan, H. Piekarz, M. R. Krishnaswamy, Raymond Brock, Boaz Klima, O. Ramirez, V. N. Evdokimov, Elizabeth Gallas, D. P. Eartly, Sharon Hagopian, H. Jöstlein, A. Jonckheere, J. Bantly, D.S. Koltick, Cecilia Elena Gerber, Darien Wood, V. A. Bezzubov, Mark Raymond Adams, S. Feher, Yu Fisyak, J. P. Negret, Hiroaki Aihara, G. Álvarez, Erich Varnes, M. Diesburg, Stephan Linn, J. M. De Miranda, V. Sirotenko, O. V. Eroshin, R. Yamada, D. Owen, A. L. Spadafora, Nicholas John Hadley, D. Schmid, R. P. Smith, D. Norman, Michael Shupe, A. K.A. Maciel, C. K. Jung, Yi Xia, D. Stewart, Jianming Qian, A. R. Clark, S. Grünendahl, A. Milder, M. Bhattacharjee, Y. Y. Shao, P. Padley, Mingming Yang, Alexey Volkov, P. M. Tuts, R. J. Madaras, J. Skeens, N. Oshima, Andrew Brandt, Brajesh C Choudhary, A. Para, R. Engelmann, S. H. Ahn, Rajendran Raja, C. Murphy, H. Schellman, Harrison Prosper, R. L. McCarthy, R. Hirosky, M. L. Good, S. Blessing, S. Willis, M. Pang, R. W. Stephens, Y. S. Zhu, E. Oltman, Tong Hu, Daria Zieminska, H.E. Miettinen, Sergey Chekulaev, N. Grossman, Bobby Samir Acharya, H. A. Neal, J. Borders, H. C. Shankar, B. Baldin, Scott Snyder, J. Kotcher, M. H.G. Souza, R. D. Schamberger, Matthew Jones, A. Smith, J. F. Lebrat, J. T. Linnemann, T. Joffe-Minor, Dongliang Zhang, H. E. Montgomery, R. Markeloff, Jing Li, M. Goforth, S. Igarashi, C. Yanagisawa, James H Cochran, Q. Z. Li-Demarteau, Mitchell Wayne, John Rutherfoord, Haifeng Li, Y. Ducros, D. Hedin, H. E. Fisk, J. Z.Y. Jiang, E. W. Anderson, K. Denisenko, C. Zeitnitz, Pushpalatha C Bhat, M. Mudan, Peter Nemethy, R. E. Lanou, Randy Ruchti, S. Krzywdzinski, M. Abolins, A. Zinchenko, J. Solomon, Brad Abbott, T. L. Taylor, J. M. Kohli, Meenakshi Narain, A. Peryshkin, W. Y. Chen, P. Mooney, D. Pueljić, O. I. Dahl, G. Eppley, V. I. Kochetkov, A. Klatchko, M.K. Fatyga, Z. R. Wolf, Vasken Hagopian, D. P. Stoker, T. G. Trippe, S. C. Loken, R. Snihur, B. I. Klochkov, J. G.R. Lima, M. A.C. Cummings, N. K. Mondal, H. T. Diehl, A. Zylberstejn, H. Weerts, A. Boehnlein, X. C. Meng, Heriberto Castilla-Valdez, J. Thompson, A. L. Lyon, Paolo Franzini, V. S. Narasimham, Welathantri Gd Dharmaratna, Shuichi Kunori, A. S. Ito, B. Hoeneisen, Lee Sawyer, W. E. Cooper, H. Greenlee, B. Gómez, P. M. Sood, G. Rahal-Callot, P. R.G. Virador, J. Ellison, Alberto Santoro, L. P. Chen, T. Behnke, Daniel R Claes, A. Bross, M. L. Kelly, Victor Daniel Elvira, A. A. Mayorov, S. M. Chang, James C. Green, B. Gibbard, A. Taketani, Howard Gordon, J. M.R. Roldan, Serban Protopopescu, M. K. Fatyga, Quing Zhu, F. Borcherding, K. C. Frame, L. T. Kerth, S.A. Kahn, C. T. Murphy, M. D. Marx, I. Adam, P. Rubinov, W. Smart, K. A. Johns, S. Youssef, Zhedong Zhang, R. Demina, M. Demarteau, R. E. Avery, K. W. Merritt, H. D. Wahl, E. A. Kozlovski, J. Sculli, A. Efimov, J. F. Bartlett, Robert Kehoe, J. Balderston, D. Xiao, C. Klopfenstein, D. Neić, Yanwen Liu, L. Lueking, S. Fahey, J. M. Guida, R. B. Li, Peter Loch, Sarah Catherine Eno, P. Yamin, Eunil Won, Dhiman Chakraborty, D. C. Wang, S. Durston-Johnson, R. K. Shivpuri, H. Haggerty, S. Mani, N. Denisenko, S. Reucroft, R. Madden, C. Yoshikawa, L. Rasmussen, Peter W. Draper, S. Rusin, L. Markosky, Vyacheslav Klyukhin, J. Drinkard, D. Denisov, J. P. Cussonneau, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, Ying Li, Kaushik De, T. Fahland, S. Lökös, Allen Mincer, P. Z. Quintas, Christina Gao, S. H. Aronson, J. Wilcox, K. S. Hahn, Ting Hu, A. Bischoff, D. Cutts, J. F. Glicenstein, E. Amidi, S. Fredriksen, Y. K. Que, Sissel Hansen, A. Zieminski, F. Nang, J. H. Christenson, J. Yang, J. R. T. de Mello Neto, K. Bazizi, C. Milner, Greg Landsberg, Juliet Lee-Franzini, S. Y. Jun, K. Streets, Vipin Bhatnagar, T. L. Geld, R. Partridge, V. M. Podstavkov, E. Flattum, V. Oguri, A. Serna, W.A. Wenzel, C. H. Park, M. L. Stevenson, H. S. Mao, D. L. Adams, M. Paterno, J. Warchol, M. Fortner, B. May, B. Gobbi, Jasvinder A. Singh, H. Johnstad, T. Yasuda, R. Astur, T. Heuring, O. Callot, N. Amos, S. Glenn, J. McKinley, D. A. Stoianova, R. J. Genik, C. Boswell, S. Abachi, Suman Bala Beri, A. L. Read, D. Edmunds, M. D. Peters, L. Oesch, N. Mokhov, B. G. Pope, Elizaveta Shabalina, J. Teiger, J. T. White, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, J. S. Kang, Ph. Mangeot, N. Graf, H. Johari, V. Balamurali, T. McKibben, M. V. S. Rao, Alexander Vorobiev, Andrew White, J. Kourlas, John Hobbs, F. Stocker, and J. A. Wightman
Subjects: Nuclear physics, Physics, Particle physics, Muon, Meson, Hadron, General Physics and Astronomy, Order (ring theory), Production (computer science), Elementary particle, Quarkonium, Bottom quark
Abstract: We report a measurement of the inclusive muon and {ital b}-quark production cross sections in {ital p{bar p}} collisions at {radical}{ital s}=1.8 TeV using the D0 detector at the Fermilab Tevatron collider. The inclusive muon spectrum extends over the kinematic range {vert_bar}{ital y}{sup {mu}}{vert_bar}{lt}0.8 and 3.5{lt}{ital p}{sub {ital T}}{sup {mu}}{lt}60GeV/{ital c}, and is well described by the expected contributions from various known sources. The {ital b}-quark production cross section for {vert_bar}{ital y}{sup {ital b}}{vert_bar}{lt}1.0 and {ital p}{sup {ital b}}{sub {ital T}}{gt}6GeV/{ital c} is extracted, and agrees with next-to-leading order QCD predictions within the experimental and theoretical uncertainties.
Published: 1995

219. Search for High Mass Top Quark Production inpp¯Collisions ats=1.8 TeV

Author: I. Bertram, P. Padley, Alexey Volkov, Bruno Mansoulie, James H Cochran, F. Lobkowicz, L. Z. Wang, N. A. Roe, S. Chopra, R. L. Dixon, Michael Rijssenbeek, Mitchell Wayne, H. Schellman, J. M. Kohli, M. Chung, V. N. Evdokimov, J. Warchol, D.S. Koltick, R. Astur, T. Heuring, J. Thompson, B. Gómez, J. A. Guida, D. Casey, R. L. McCarthy, J. Skeens, M. L. Good, A. L. Read, Alberto Santoro, J. Borders, V. A. Bezzubov, J. P. Negret, R. P. Smith, C. Cretsinger, Dongliang Zhang, J. Z.Y. Jiang, Michael Shupe, Y. Y. Shao, B. Baldin, Harrison Prosper, J. M. Hauptman, Cecilia Elena Gerber, Rajendran Raja, S. Krzywdzinski, D. Edmunds, D. Hedin, R. Demina, Y. Ducros, Haifeng Li, V. I. Kochetkov, M. Strovink, E. James, P. Yamin, Brad Abbott, Jianming Qian, Peter Nemethy, G. Eppley, J. Jaques, Andrew White, A. Zylberstejn, Meenakshi Narain, A. Peryshkin, C. T. Murphy, Welathantri Gd Dharmaratna, B. G. Pope, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, X. C. Meng, A. Baden, Ron Lipton, D. C. Wang, H. L. Melanson, P. Z. Quintas, J. Womersley, B. May, Tong Hu, A. Bischoff, J. F. Glicenstein, Sissel Hansen, M. D. Peters, Laurent Chevalier, G. C. Blazey, Zhedong Zhang, S. Mani, E. A. Kozlovski, R. Yamada, J. Yu, G. Finocchiaro, J. Bendich, H. Greenlee, J. Kourlas, S. Fuess, J. R. Hubbard, J. G.R. Lima, Gilvan Alves, Victor Daniel Elvira, J. H. Christenson, Stephen Wimpenny, F. Nang, Nikolai Mokhov, S. H. Ahn, H. Haggerty, M. Bhattacharjee, A. S. Ito, B. Pi, S. Durston-Johnson, A. Bross, John Hobbs, Elizabeth Gallas, M. Sosebee, S. Lökös, B. Gobbi, R. Madden, L. Oesch, C. L. Kim, C. Milner, T. Marshall, L. Rasmussen, John Rutherfoord, R. Hirosky, Yu Fisyak, N. Denisenko, S. Reucroft, T. Joffe-Minor, Hiroaki Aihara, C. Yanagisawa, S. Feher, Peter W. Draper, Serban Protopopescu, K. Bazizi, D. P. Eartly, Sharon Hagopian, J. Bantly, D. Stewart, A. L. Spadafora, T. Fahland, S. Youssef, A. K.A. Maciel, C. Yoshikawa, P. M. Tuts, T. Huehn, W. Guryn, Robert Kehoe, H. E. Fisk, Mary Beth Adams, J. Solomon, D. Schmid, Yi Xia, Andrew Brandt, R. Engelmann, E. Oltman, J. Wilcox, K. Streets, Vipin Bhatnagar, Brajesh C Choudhary, Darien Wood, Nicholas John Hadley, Jasvinder A. Singh, O. Ramirez, J. Yang, V. M. Podstavkov, Elizaveta Shabalina, K. Denisenko, D. Fein, Pushpalatha C Bhat, M. Mudan, M. A.C. Cummings, B. Hoeneisen, R. Partridge, E. Flattum, R. W. Stephens, J. Balderston, H.E. Miettinen, T. G. Trippe, S. C. Loken, Ting Hu, Ulrich Heintz, S. Blessing, H. Johnstad, T. Yasuda, R. B. Li, E. W. Anderson, T. L. Taylor, M. Fortner, A. L. Lyon, Shuichi Kunori, Erich Varnes, James C. Green, S. Glenn, J. McKinley, B. I. Klochkov, A. Zieminski, F. Borcherding, Scott Snyder, J. Featherly, D. Pizzuto, D. A. Stoianova, H. Jöstlein, R. Markeloff, R. K. Shivpuri, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, C. H. Park, Eunil Won, F. Stocker, H. S. Mao, Lee Sawyer, J. T. Linnemann, M. H.G. Souza, A. Taketani, J. M. De Miranda, V. Sirotenko, V. Glebov, Marvin Johnson, M. Abolins, A. Zinchenko, O. V. Eroshin, J. A. Wightman, M. Diesburg, D. L. Adams, R. E. Lanou, D. Owen, Allen Mincer, W. Y. Chen, M. Goforth, P. Mooney, J. Drinkard, G. Rahal-Callot, Christina Gao, N. I. Bojko, A. V. Kozelov, S. Y. Jun, R. Snihur, M. Tartaglia, D. Puaeljić, W. Smart, K. A. Johns, S.A. Kahn, Kaushik De, M.K. Fatyga, Paolo Franzini, V. S. Narasimham, M. Demarteau, R. E. Avery, Z. R. Wolf, Heriberto Castilla-Valdez, N. Grossman, N. K. Mondal, H. E. Montgomery, G. Álvarez, Mingming Yang, H. T. Diehl, S. M. Chang, J. P. Cussonneau, S. H. Aronson, J. T. White, J. Kotcher, A. Klatchko, Sarah Catherine Eno, Jing Li, J. S. Hoftun, J. N. Butler, A. A. Mayorov, Quing Zhu, P. D. Grannis, H. Piekarz, A. Boehnlein, O. I. Dahl, P. M. Sood, S. Fredriksen, Y. K. Que, M. K. Fatyga, N. Graf, C. Zeitnitz, Vyacheslav Klyukhin, J. Ellison, Ying Li, Y. S. Zhu, Y. H. Zhou, R. J. Genik, T. Behnke, K. S. Hahn, S. A. Jerger, D. Cutts, D. P. Stoker, B. Gibbard, C. Klopfenstein, G. E. Forden, A. P. Heinson, D. Xiao, C. K. Jung, S. Fahey, A. Kernan, Greg Landsberg, S. Margulies, O. Callot, J. Sculli, A. Efimov, J. M. Guida, S. Lami, R. E. Hall, Matthew Jones, A. Leflat, A. Jonckheere, Stephan Linn, T. L. Geld, N. Amos, M. Paterno, Dhiman Chakraborty, N. Oshima, Daria Zieminska, A. Pluquet, P.F. Ermolov, Yanxi Zhang, R. D. Schamberger, A. Smith, J. F. Lebrat, W. G. Cobau, M. I. Martin, J. S. Kang, S. Igarashi, Q. Z. Li-Demarteau, E. Amidi, V. S. Burtovoi, Randy Ruchti, J. R. T. de Mello Neto, C. S. Mishra, C. Boswell, S. Rusin, L. Markosky, Vasken Hagopian, H. Weerts, Ph. Mangeot, A. Milder, S. Abachi, Juliet Lee-Franzini, C. Murphy, R. J. Madaras, J. M.R. Roldan, P. R.G. Virador, D. Buchholz, Suman Bala Beri, I. Manning, M. D. Marx, H. D. Wahl, P. Tamburello, D. Denisov, J. Teiger, Heng Xu, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, V. Oguri, W.A. Wenzel, R. P. Xie, Gregory R Snow, M. L. Stevenson, H. Johari, V. Balamurali, T. McKibben, M. V. S. Rao, Alexander Vorobiev, W. E. Cooper, L. P. Chen, Daniel R Claes, Raymond Brock, Boaz Klima, D. Norman, S. Willis, M. Pang, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, A. R. Clark, S. Grünendahl, A. Para, Sergey Chekulaev, I. Adam, P. Rubinov, K. W. Merritt, J. F. Bartlett, D. Neić, Yanwen Liu, L. Lueking, Peter Loch, M. L. Kelly, Howard Gordon, K. C. Frame, and L. T. Kerth
Subjects: Physics, Top quark, Particle physics, Muon, Luminosity (scattering theory), Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Electron, Bottom quark, Particle identification, Standard Model, Nuclear physics, High Energy Physics::Experiment, Production (computer science)
Abstract: We present new results on the search for the top quark in p anti-p collisions at S**(1/2) = 1.8 TeV with an integrated luminosity of 13.5 +- 1.6 pb**(-1). We have considered t anti-t production in the Standard Model using electron and muon dilepton decay channels (t anti-t -> e mu + jets, e e + jets, and mu mu + jets) and single-lepton decay channels (t anti-t -> e + jets and mu + jets) with and without tagging of b quark jets. From all channels, we have 9 events with an expected background of 3.8 +- 0.9. If we assume that the excess is due to t anti-t production, and assuming a top mass of 180 GeV/c**2, we obtain a cross section of 8.2 +- 5.1 pb.
Published: 1995

220. Investigation of a quantitative photoacoustic tomography fitting procedure on multiple targets in reflection geometry with diffuse optical measurement assistance

Author: Quing Zhu, Chen Xu, and Patrick D. Kumavor
Subjects: Materials science, Optics, Breast imaging, business.industry, Hybrid system, Attenuation coefficient, Reflection (physics), Ranging, business, Absorption (electromagnetic radiation), Imaging phantom, Reflection geometry
Abstract: Traditional Photoacoustic tomography provides the distribution of absorbed optical energy densities which are the products of the optical absorption coefficients and fluences. However, the absorption coefficient is the only functional parameter that is related to disease diagnosis, such as cancer. In this paper, we report the experimental investigation of an improved fitting procedure which can quantitatively characterize optical absorption coefficients of multiple targets. The original fitting procedure was proposed by us and used for a single target. The fitting procedure included a complete photoacoustic forward model, which incorporated an analytical model of light transport and a model of acoustic propagation. Using the target information from the PAT images and the background information from diffuse optical measurements (DOM), the fitting method minimizes the photoacoustic measurements and forward model data and recovers the target absorption coefficient quantitatively. The fitting errors in the absorption coefficients can reach 20% to 100% if the original fitting procedure is directly used on multiple targets. In our improved fitting method, the ratio between the photoacoustic intensities is introduced and served as extra input to the fitting procedure. As a result, the total number of unknown parameters is reduced and fitting accuracy is improved. The hybrid system used in the experiment combines a 64-channel photoacoustic system with a frequency-domain diffused optical system. The experiment was performed in the reflection geometry suitable for breast imaging. Phantom experiments include the combination of high contrast and low contrast targets with absorption coefficients ranging from 0.07 to 0.28 cm -1 and with different spatial separations. The phantoms were inserted into a chicken breast tissue. The fitting errors of multiple targets were reduced to less than 20% for both high and low contrast targets. These results illustrate the potential application of this quantitative DOM-assisted photoacoustic fitting procedure to image and diagnose breast cancer having multiple and complex tumor distribution.
Published: 2012

221. Ultrafast ultrasound and photoacoustic co-registered imaging system based on FPGA parallel processing

Author: Guangqian Yuan, Quing Zhu, Hai Li, Umar Alqasemi, and Andres Aguirre
Subjects: Digital signal processor, business.industry, Computer science, Ultrasound, Photoacoustic imaging in biomedicine, medicine.disease, Frame rate, Signal-to-noise ratio, Parallel processing (DSP implementation), medicine, Computer vision, Artificial intelligence, business, Ovarian cancer, Field-programmable gate array, Computer hardware
Abstract: Co-registered Ultrasound and Photoacoustic images provide complimentary structure and functional information for cancer diagnosis and assessment of therapy response. In SPIE Photonics West 2011, we reported a system that acquires from 64 channels and displays up to 1 frame per second (fps) ultrasound pulse-echo images, 5 fps photoacoustic images, and 0.5 fps co-registered images. In this year, we report an upgraded system which acquires from 128 channels and displays up to 15 fps co-registered ultrasound and photoacoustic images limited by our laser pulse repetition rate. The system architecture is novel and it provides real-time co-registration of images, the ability of acquiring the channel RF data for both modalities, and the flexibility of adjusting every parameter involved in the imaging process for both modalities. The digital signal processor board is upgraded to an FPGA-based PCIe board that collects the data from the acquisition modules and transfers them to the PC memory at 2.5GT/s rate through an x8 DDR PCIe bus running at 100MHz clock frequency. The modules FPGA code is also upgraded to form a beam line in 90 microseconds and to communicate through ultrafast differential tracks with the PCIe board. Furthermore, the printed circuit board (PCB) design of the system was adjusted to provide a maximum of 80dB signal-to-noise ratio at 60dB gain, which is comparable to some commercial ultrasound machines. The real-time system allows capturing co-registered US/PAT images free of motion artifacts and also provides ultrafast dynamic information when a contrast agent is used. The system is built for clinical use to assist the diagnosis of ovarian cancer. However, the hardware is still under testing and evaluation stage, experimental and clinical results will be reported later.
Published: 2012

222. An intraoperative probe combining positron detection and OCT imaging for ovarian cancer detection and characterization

Author: Xiaohong Wang, Yi Yang, Quing Zhu, Melinda Sanders, Molly Brewer, Nrusingh C. Biswal, Tianheng Wang, Patrick D. Kumavor, Mozafareddin K. Karimeddini, and John A. Vento
Subjects: medicine.medical_specialty, genetic structures, medicine.diagnostic_test, Scattering coefficient, business.industry, Ovarian tissue, Ovary, Histopathology Result, medicine.disease, eye diseases, Positron, medicine.anatomical_structure, Optical coherence tomography, medicine, Medical physics, sense organs, Ovarian cancer, Nuclear medicine, business, Ex vivo
Abstract: In this paper, we report an intraoperative approach by combining optical coherence tomography (OCT) and position detection to detect and characterize ovarian cancers. A total of 18 ovaries were studied ex vivo. Based on histopathology result, they were classified into normal and malignant groups, respectively. On average positron count rate of 8.0-fold higher was found between malignant and normal ovaries. OCT imaging of ovaries revealed many detailed morphologic features that could be potentially valuable for detecting early malignant changes in ovarian tissue. Optical scattering coefficients of these ovaries were estimated from OCT A-lines. Normal ovarian tissue showed higher scattering coefficient than that of malignant ovarian tissue. Using a threshold of 2.00 mm -1 for all ovaries, a sensitivity of 100% and a specificity of 100% were achieved. This initial data shows our intraoperative probe based on OCT and positron detection has a great potential for ovarian cancer detection and characterization.
Published: 2012

223. Assessment of collagen changes in ovarian tissue by extracting optical scattering coefficient from OCT images

Author: Tianheng Wang, Melinda Sanders, Nrusingh C. Biswal, Quing Zhu, Xiaohong Wang, Molly Brewer, and Yi Yang
Subjects: Materials science, medicine.diagnostic_test, Scattering coefficient, business.industry, Scattering, Ovarian tissue, Ovary, Light scattering, Normal group, chemistry.chemical_compound, Optics, Nuclear magnetic resonance, medicine.anatomical_structure, Optical coherence tomography, chemistry, medicine, business, Sirius Red
Abstract: Optical scattering coefficient from ex-vivo unfixed normal and malignant ovarian tissue was quantitatively extracted by fitting optical coherence tomography (OCT) A-line signals to a single scattering model. 1097 average A-line measurements at a wavelength of 1310nm were performed at 108 sites obtained from 18 ovaries. The average scattering coefficient obtained from normal group consisted of 833 measurements from 88 sites was 2.41 mm-1 (±0.59), while the average coefficient obtained from malignant group consisted of 264 measurements from 20 sites was 1.55 mm-1 (±0.46). Using a threshold of 2 mm-1 for each ovary, a sensitivity of 100% and a specificity of 100% were achieved. The amount of collagen within OCT imaging depth was analyzed from the tissue histological section stained with Sirius Red. The average collagen area fraction (CAF) obtained from normal group was 48.4% (±12.3%), while the average CAF obtained from malignant group was 11.4% (±4.7%). Statistical significance of the collagen content was found between the two groups (p < 0.001). The preliminary data demonstrated that quantitative extraction of optical scattering coefficient from OCT images could be a potential powerful method for ovarian cancer detection and diagnosis.
Published: 2012

224. Applying laser pulse stretching technique on photoacoustic imaging for efficiently delivering laser energy

Author: Tianheng Wang, Quing Zhu, and Patrick D. Kumavor
Subjects: Optical fiber, Materials science, Hydrophone, Pulse (signal processing), business.industry, Laser, Q-switching, law.invention, Photoacoustic Doppler effect, Optics, Multiphoton intrapulse interference phase scan, law, Optoelectronics, business, Bandwidth-limited pulse
Abstract: High-energy and short-duration outputs from lasers are desirable to improve the photoacoustic image quality when imaging deeply-seated lesions. In many clinical applications, optical fibers are used to couple the high-energy laser pulse to tissue. These high peak intensity pulses can damage an optical fiber input face if the damage threshold is exceeded. It is necessary to reduce the peak intensity to minimize the fiber damage and to delivery sufficient light for imaging. In this paper, a laser-pulse-stretching technique is introduced to reduce the peak intensity of laser pulses. To demonstrate the technique, an initial 17ns pulse was stretched to 37ns by a ring-cavity laser-pulse-stretching system, and the laser peak power reduced to 42%. The stretched pulse increased the fiber damage threshold by 1.5-fold. Three ultrasound transducers centered at 1.3MHz, 3.5MHz, 6MHz frequencies were simulated and the results showed that the photoacoustic signal of 0.5mm-diameter target obtained with 37ns pulse was about 98%, 91% and 80% respectively using the same energy as with the 17ns pulse. Simulations were validated using a broadband hydrophone. Quantitative comparisons of photoacoustic images obtained with three corresponding ultrasound transducers showed that the image quality was not affected by stretching the pulse.
Published: 2012

225. Optical Coherence Tomography in Dentistry

Author: Yueli L. Chen, Quan Zhang, and Quing Zhu
Subjects: genetic structures, Spectrometer, medicine.diagnostic_test, business.industry, Computer science, eye diseases, symbols.namesake, Interferometry, Optics, Light source, Optical coherence tomography, Broadband, symbols, medicine, sense organs, business, Doppler effect, Tunable laser, Coherence (physics)
Abstract: Optical Coherence Tomography is an imaging technique characterized by high spatial resolution and noninvasive subsurface detection1. OCT started as an interferometric technique utilizing the newly emerged low coherence or partial coherence light source and time-domain gating to achieve the depth resolution. With additional lateral scans, 2-D or 3D tomographic images can be obtained. The instrumental development of OCT has experienced several phases. It goes from free space architectures to fiber-based systems, from intensity-based structural imaging to multiple functional extensions of polarization sensitive, Doppler, and spectroscopic OCT. Since the beginning of this century, a Fourier domain OCT infrastructure has been introduced that resulted in a new revolution in OCT technology2, 3. Not only was the new technology bringing a hundred times more sensitivity, it was also technically more convenient for the design of a higher speed scanning system structures. Nowadays, FD-OCT are implemented with either a spectrometer or a tunable laser design. Modern OCT is more accurately defined as a broadband rather than lowcoherence interferometric technology. And the outcome is a true 3D imaging modality4-9 with high data speed for real-time clinical diagnosis, free from the degradation of motion artifacts.
Published: 2012

226. Target Tumor Hypoxia with 2-nitroimidazole-ICG dye Conjugate

Author: Yan Xu and Quing Zhu
Subjects: genetic structures, Tumor hypoxia, business.industry, 2-nitroimidazole, Hypoxia (medical), eye diseases, body regions, Piperazine, chemistry.chemical_compound, Optics, Signal strength, chemistry, medicine, Biophysics, medicine.symptom, business, Linker, Conjugate
Abstract: We systemically evaluated the sensitivity of the hypoxia targeted 2-nitroimidazole-ICG conjugate using piperazine linker in in-vivo tumor models, which showed hypoxia can be targeted with twice higher signal strength than that of untargeted ICG.
Published: 2012

227. Solving Inverse Problem of Diffuse Optical Tomography with Global Optimization

Author: Behnoosh Tavakoli and Quing Zhu
Subjects: Signal processing, business.industry, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Iterative reconstruction, Inverse problem, Imaging phantom, Diffuse optical imaging, Computer vision, Tomography, Artificial intelligence, Absorption (electromagnetic radiation), business, Global optimization, Algorithm, ComputingMethodologies_COMPUTERGRAPHICS, Mathematics
Abstract: A new imaging reconstruction based on a global optimization approach is presented. Simulation and phantom results have demonstrated superior performance in accurately mapping absorption distribution compared with that of conjugate-gradient method.
Published: 2012

228. Assessing Tumor Response to Neoadjuvant Chemotherapy using Ultrasound-guided Near Infrared Light

Author: Quing Zhu, Patricia DeFusco, Andrew Ricci, Edward Cronin, Poornima Hegde, Mark Kane, Behnoosh Tavakoli, Yan Xu, Jesse Hart, and Susan Tannenbaum
Subjects: Pathology, medicine.medical_specialty, Chemotherapy, Near infrared light, business.industry, medicine.medical_treatment, Tumor response, Ultrasound guided, Total hemoglobin, Tumor vascularity, medicine, Pathologic Response, Radiology, business, Near infrared radiation
Abstract: In this paper, we show that initial tumor vascularity is a good predictor of final pathologic response. Additionally, the vascular changes during early treatment cycles assessed by %total hemoglobin can further predict final pathologic response.
Published: 2012

229. Growth of GaAs microcrystal by Ga droplet formation and successive As supply with low-pressure metalorganic chemical vapor deposition

Author: Chouho Yamagishi, Masahiro Akiyama, Takashi Ueda, Quing Zhu Gao, and Eiji Yamaichi
Subjects: Inorganic Chemistry, Photoluminescence, Chemistry, Semiconductor materials, Materials Chemistry, Analytical chemistry, Deposition (phase transition), Mineralogy, Chemical vapor deposition, Condensed Matter Physics, Epitaxy, Group 2 organometallic chemistry
Abstract: GaAs microcrystals were grown by the combination of Ga droplet formation and successive As supply with low-pressure metalorganic chemical vapor deposition. The Ga droplets were formed by Ga(CH 3 ) 3 supply, and they were transformed to GaAs microcrystals by successive AsH 3 supply. The size and the density of the GaAs microcrystals were controlled by the deposition of the Ga droplets. Several photoluminescence peaks with high intensities were observed from the GaAs microcrystals sandwiched with AlGaAs layers.
Published: 1994

230. Inclusion complexation of sodium alkyl sulfates with?-cyclodextrin. A1H NMR study

Author: You-Cheng Liu, Tan Ren, Zi-Zhong Li, Qing-Xiang Guo, and Xiao-Quing Zhu
Subjects: chemistry.chemical_classification, Cyclodextrin, Sodium, chemistry.chemical_element, General Chemistry, Nuclear magnetic resonance spectroscopy, Condensed Matter Physics, Medicinal chemistry, Gibbs free energy, Inclusion compound, symbols.namesake, chemistry.chemical_compound, Hydrocarbon, chemistry, symbols, Molecule, Organic chemistry, Alkyl, Food Science
Abstract: The association of anionic surfactants,viz., sodium alkyl sulfates, C n H2n+1OSO3Na (n=5, 6, 7, 8, 9, 10, 12), withβ-cyclodextrin has been investigated by means of NMR spectroscopy. The measurements of chemical shift changes of certain protons of both host and guest molecules indicated 1:1 inclusion complex formation. The association constants (K a) and standard free energy changes (−ΔG 0) for the inclusion complexation reaction vary as a function of the hydrocarbon chain length of the surfactants.
Published: 1994

231. Polarization memory effect in optical coherence tomography and dental imaging application

Author: Yueli Chen, Linda L. Otis, and Quing Zhu
Subjects: Materials science, Light, Research Papers: Imaging, Biomedical Engineering, Light scattering, Biomaterials, Optics, Optical coherence tomography, stomatognathic system, medicine, Dental Caries Activity Tests, Humans, Scattering, Radiation, Optical tomography, Tooth Demineralization, Circular polarization, Birefringence, medicine.diagnostic_test, Scattering, business.industry, Phantoms, Imaging, Reproducibility of Results, Signal Processing, Computer-Assisted, Polarization (waves), Atomic and Molecular Physics, and Optics, Microspheres, Electronic, Optical and Magnetic Materials, Computer data storage, Dentin, business, Tooth, Tomography, Optical Coherence
Abstract: We report the existence of polarization memory effect (PME) in optical coherence tomography and investigate its potential applications in dental imaging. We performed the study in three steps. First, microsphere scattering phantoms of different sizes were imaged in order to validate experimental results with PME theory. Both linearly and circularly polarized light were used to probe the samples. Second, healthy tooth samples were scanned and polarization memory effect was identified in dentin. In this step, specific verification and signal processing were performed to rule out possible image interpretation by birefringence effect. Third, we evaluated dentin demineralization with PME. Results show polarization memory can be useful to characterize this dynamic mineralization process for early caries detection and rehabilitation. C 2011 Society of Photo-Optical Instrumentation Engineers
Published: 2011

232. In vivo photoacoustic tomography of mouse cerebral edema induced by cold injury

Author: Lihong V. Wang, Zhun Xu, and Quing Zhu
Subjects: Pathology, medicine.medical_specialty, Research Papers: Imaging, Biomedical Engineering, Blood volume, Brain Edema, Cerebral edema, Biomaterials, Hemoglobins, Mice, In vivo, Edema, medicine, Animals, Photoacoustic effect, Brain Chemistry, medicine.diagnostic_test, Chemistry, business.industry, Water, Magnetic resonance imaging, medicine.disease, Magnetic Resonance Imaging, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Cold Temperature, Oxygen, medicine.anatomical_structure, Linear Models, Elasticity Imaging Techniques, medicine.symptom, Nuclear medicine, business, Preclinical imaging, Algorithms, Blood vessel
Abstract: For the first time, we have implemented photoacoustic tomography (PAT) to image the water content of an edema in vivo. We produced and imaged a cold-induced cerebral edema transcranially, then obtained blood vessel and water accumulation images at 610 and 975 nm, respectively. We tracked the changes at 12, 24, and 36 h after the cold injury. The blood volume decreased after the cold injury, and the maximum area of edema was observed 24 h after the cold injury. We validated PAT of the water content of the edema through magnetic Resonance Imaging and the water spectrum from the spectrophotometric measurement.
Published: 2011

233. Depth-correction algorithm that improves optical quantification of large breast lesions imaged by diffuse optical tomography

Author: Behnoosh Tavakoli and Quing Zhu
Subjects: Materials science, Research Papers: Imaging, Biomedical Engineering, Breast Neoplasms, Iterative reconstruction, Sensitivity and Specificity, Imaging phantom, Biomaterials, Optics, Imaging, Three-Dimensional, medicine, Humans, Tomography, Optical, Exponential decay, Optical tomography, Absorption (electromagnetic radiation), Spectroscopy, Near-Infrared, medicine.diagnostic_test, business.industry, Ultrasound, Reproducibility of Results, Image Enhancement, Atomic and Molecular Physics, and Optics, Diffuse optical imaging, Electronic, Optical and Magnetic Materials, Attenuation coefficient, Female, Ultrasonography, Mammary, business, Algorithms
Abstract: Optical quantification of large lesions imaged with diffuse optical tomography in reflection geometry is depth dependence due to the exponential decay of photon density waves. We introduce a depth-correction method that incorporates the target depth information provided by coregistered ultrasound. It is based on balancing the weight matrix, using the maximum singular values of the target layers in depth without changing the forward model. The performance of the method is evaluated using phantom targets and 10 clinical cases of larger malignant and benign lesions. The results for the homogenous targets demonstrate that the location error of the reconstructed maximum absorption coefficient is reduced to the range of the reconstruction mesh size for phantom targets. Furthermore, the uniformity of absorption distribution inside the lesions improve about two times and the median of the absorption increases from 60 to 85% of its maximum compared to no depth correction. In addition, nonhomogenous phantoms are characterized more accurately. Clinical examples show a similar trend as the phantom results and demonstrate the utility of the correction method for improving lesion quantification.
Published: 2011

234. Artifact reduction method in ultrasound-guided diffuse optical tomography using exogenous contrast agents

Author: Yasaman Ardeshirpour, Quing Zhu, Nrusingh C. Biswal, and Andres Aguirre
Subjects: Indocyanine Green, medicine.medical_specialty, Materials science, Research Papers: Imaging, Biomedical Engineering, Image registration, Contrast Media, Breast Neoplasms, Iterative reconstruction, Biomaterials, Lesion, chemistry.chemical_compound, Mice, medicine, Image Processing, Computer-Assisted, Animals, Humans, Tomography, Optical, Optical tomography, Aged, Ultrasonography, medicine.diagnostic_test, business.industry, Phantoms, Imaging, Ultrasound, Mammary Neoplasms, Experimental, Atomic and Molecular Physics, and Optics, Diffuse optical imaging, Electronic, Optical and Magnetic Materials, chemistry, Female, Radiology, Tomography, medicine.symptom, business, Artifacts, Indocyanine green, Biomedical engineering
Abstract: In diffuse optical tomography (DOT), a typical perturbation approach requires two sets of measurements obtained at the lesion breast (lesion or target site) and a contra-lateral location of the normal breast (reference site) for image reconstruction. For patients who have a small amount of breast tissue, the chest-wall underneath the breast tissue at both sites affects the imaging results. In this group of patients, the perturbation, which is the difference between measurements obtained at the lesion and reference sites, may include the information of background mismatch which can generate artifacts or affect the reconstructed quantitative absorption coefficient of the lesion. Also, for patients who have a single breast due to prior surgery, the contra-lateral reference is not available. To improve the DOT performance or overcome its limitation, we introduced a new method based on an exogenous contrast agent and demonstrate its performance using animal models. Co-registered ultrasound was used to guide the lesion localization. The results have shown that artifacts caused by background mismatch can be reduced significantly by using this new method.
Published: 2011

235. Fast, limited-data photoacoustic imaging for multiplexed systems using a frequency-domain estimation technique

Author: John K, Gamelin, Andres, Aguirre, and Quing, Zhu
Subjects: Time Factors, Phantoms, Imaging, Physics::Medical Physics, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Image Processing, Computer-Assisted, Animals, Reference Standards, Magnetic Resonance Imaging, Algorithms, Absorption, Molecular Imaging, Thermotherapy Physics
Abstract: A new frequency-domain estimation algorithm has been developed that uses a priori information to simultaneously improve imaging quality and time resolution in photoacoustic tomography with incomplete data sets.The method involves application of a single-stage Wiener optimal filter to augment data sets by interpolation between measurement locations using relationships determined in a reference scan. The filter can be applied in real-time using FFT methods using either fixed or dynamic references and used with any imaging algorithm. The performance of the method is compared to a modified version of constrained backprojection algorithms using simulations and experimental investigations.Simulations demonstrate the effectiveness of the approach for tracking dynamic photoacoustic activity for data sets with limited views (90 degrees) or tomographic views with a reduced number of acquisition angles at any given time (or = 32). Experimental data of contrast uptake and washout using a 512-element curved transducer with 8:1 electronic multiplexing with the algorithm demonstrate full two-dimensional tomographic imaging with a temporal resolution better than 130 ms.The estimation algorithm enables high spatial resolution, real-time imaging of dynamic physiological events or volumetric regions for photoacoustic systems employing multiplexing or scanning.
Published: 2011

236. Errata: Target detection and quantification using a hybrid hand-held diffuse optical tomography and photoacoustic tomography system

Author: Patrick D. Kumavor, Chen Xu, Andres Aguirre, John Gamelin, Yasaman Ardeshirpour, Behnoosh Tavakoli, Saeid Zanganeh, Umar Alqasemi, Yi Yang, and Quing Zhu
Subjects: Biomaterials, Errata, Biomedical Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published: 2011

237. Breast tumor hypoxia mapping using ultrasound guided diffuse optical tomography

Author: Quing Zhu, Yan Xu, and Nrusingh C. Biswal
Subjects: Materials science, medicine.diagnostic_test, Tumor hypoxia, business.industry, Ultrasound, Oxygenation, Tumor Oxygenation, Imaging phantom, Diffuse optical imaging, Oxygen Saturation Measurement, Nuclear magnetic resonance, medicine, Optical tomography, business
Abstract: Tumor hypoxia is an important indicator of tumor metabolism and tumor response to various forms of therapy. Currently, no imaging modality exists that can directly map tumor hypoxia non-invasively. We present an ultrasound guided diffuse optical imaging technique for precisely measuring the tumor oxygenation. The approach employs ultrasound structural information as a-prior knowledge for diffuse optical imaging. Hypoxia mapping is achieved using endogenous chromophores such as oxy- and deoxy- hemoglobin in the tissue. Because oxy- and deoxy- hemoglobin respond differently at different wavelengths, four different laser diodes of wavelengths 740 nm, 780 nm, 808 nm and 830 nm were used for mapping tumor hypoxia by diffuse optical imaging. Hypoxia model experiments were performed using phantoms at different oxygenation conditions (Hemoglobin oxygen saturation: 14%-92%) representing the hemoglobin oxygenation range in tissue. Targets of different sizes mimicking different development stages of breast tumors, 1.0 cm to 2.5 cm diameter in 0.5 cm steps, were tested to validate the oxygen saturation measurement accuracy with target size. The absolute deviations between the estimated hemoglobin oxygen saturations from absorption maps and oxygen measurements obtained using a pO 2 electrode were less than 8% over the measured range of oxygen saturations (14% - 92%). An inhomogeneous cocentric blood phantom of deoxygenated center core and oxygenated outer shell was imaged and deoxy- and oxy- hemoglobin maps revealed corresponding distributions which correlate with inhomogeneous deoxy- and oxy- distributions frequently seen in advanced breast cancers located in the depth range of 1-3 cm.
Published: 2011

238. Small-animal whole-body imaging using a photoacoustic full ring array system

Author: Zijian Guo, Andres Aguirre, Lihong V. Wang, Jun Xia, Quing Zhu, Oraevsky, Alexander, and Wang, Lihong V.
Subjects: Tomographic reconstruction, Materials science, business.industry, Condenser (optics), Whole body imaging, Laser, Imaging phantom, law.invention, Lens (optics), Transducer, Optics, law, Deconvolution, business
Abstract: In this report, we present a novel 3D photoacoustic computed tomography (PACT) system for small-animal whole-body imaging. The PACT system, based on a 512-element full-ring transducer array, received photoacoustic signals primarily from a 2-mm-thick slice. The light was generated by a pulse laser, and can either illuminate from the top or be reshaped to illuminate the sample from the side, using a conical lens and an optical condenser. The PACT system was capable of acquiring an in-plane image in 1.6 s; by scanning the sample in the elevational direction, a 3D tomographic image could be constructed. We tested the system by imaging a cylindrical phantom made of human hairs immersed in a scattering medium. The reconstructed image achieved an in-plane resolution of 0.1 mm and an elevational resolution of 1 mm. After deconvolution in the elevational direction, the 3D image was found to match well with the phantom. The system was also used to image a baby mouse in situ; the spinal cord and ribs can be seen easily in the reconstructed image. Our results demonstrate that the PACT system has the potential to be used for fast small-animal whole-body tomographic imaging.
Published: 2011

239. Improving light quantification of large breast lesions imaged by diffuse optical tomography

Author: Behnoosh Tavakoli and Quing Zhu
Subjects: Physics, Photon, Optics, Large breast, business.industry, Ultrasound, Reflection (physics), Exponential decay, business, Imaging phantom, Diffuse optical imaging, Reflection geometry
Abstract: Due to the exponential decay of the photon density wave, the accuracy of quantifying deeper portion of the large lesions by diffuse optical tomography in reflection geometry is much lower than that of the top portion. In this study, we introduce a modified depth correction method that incorporates the target depth information provided by co-registered ultrasound. Phantom experiments and clinical example will be presented to demonstrate the utility of the method in improving light quantification of large lesions.
Published: 2011

240. A low cost multi-wavelength tomography system based on LED sources

Author: Andres Aguirre, Yi Yang, Aaron Chen, Umar Alqasemi, and Quing Zhu
Subjects: Materials science, Laser diode, business.industry, Near-infrared spectroscopy, Detector, Laser, Imaging phantom, Semiconductor laser theory, law.invention, Optics, law, Optoelectronics, business, Light-emitting diode, Diode
Abstract: We present a multi-wavelength DC system using Light Emitting Diode (LED) sources of four wavelengths in the near infrared range. These LEDs are commercially available, much cheaper than laser diodes, and have adequate power to probe deeply seated lesions. In our system, 8 groups of LEDs of four wavelengths were deployed on a hand-held probe and 10 PMT detectors were fiber coupled to the probe. A co-registered ultrasound (US) array located in the middle of the probe provided lesion location and morphology, which were used for assisting near infrared imaging reconstruction. Experiments evaluated the performance of the LED based DC system using phantom targets.
Published: 2011

241. A combined photoacoustic, pulse echo ultrasound, and optical coherence tomography endoscopy

Author: Xiang Li, Yi Yang, Quing Zhu, Qifa Zhou, Patrick D. Kumavor, and Tianheng Wang
Subjects: Materials science, Multi-mode optical fiber, genetic structures, medicine.diagnostic_test, business.industry, Ultrasound, Laser, law.invention, Photoacoustic Doppler effect, Transducer, Optics, Optical coherence tomography, law, medicine, Ultrasonic sensor, Center frequency, business
Abstract: Photoacoustic imaging and optical coherence tomography are two emerging imaging modalities which provide complementary optical absorption and scattering contrasts for biological tissues. While photoacoustic imaging provides tissue vasculature information, optical coherence tomography offers micron-scale morphological imaging with penetration depths of 1~3 mms. Pulse-echo ultrasound is readily available from photoacoustic system and it provides tissue structure information at deeper depths with resolutions scalable with the transducer frequency. We present a prototype endoscope that consists of a ball lensed optical coherence tomography probe, a right-angled multimode fiber for delivering the laser beam for photoacoustic imaging, and a high frequency ultrasound transducer of 35 MHz center frequency. The overall diameter is 5mms. Porcine ovaries were imaged ex vivo to demonstrate the capability of this new combined endoscopy. The microvascular and high resolution structural images at subsurface and deeper tissue range demonstrate the synergy of the combined endoscopy over each modality alone.
Published: 2011

242. Hypoxia targeted carbon nanotubes as a sensitive contrast agent for photoacoustic imaging of tumors

Author: Hai Li, Michael B. Smith, Christopher Pavlik, Saeid Zanganeh, Umar Alqasemi, Quing Zhu, Andres Aguirre, and Nrusingh C. Biswal
Subjects: chemistry.chemical_classification, Tumor hypoxia, Carboxylic acid, Near-infrared spectroscopy, Nanotechnology, Carbon nanotube, Conjugated system, Nanomaterials, law.invention, chemistry, law, Biophysics, Molecular imaging, Conjugate
Abstract: Development of new and efficient contrast agents is of fundamental importance to improve detection sensitivity of smaller lesions. Within the family of nanomaterials, carbon nanotubes (CNT) not only have emerged as a new alternative and efficient transporter and translocater of therapeutic molecules but also as a photoacoustic molecular imaging agent owing to its strong optical absorption in the near-infrared region. Drugs, Antibodies and nucleic acids could functionalize the CNT and prepare an appropriate system for delivering the cargos to cells and organs. In this work, we present a novel photoacoustic contrast agent which is based on a unique hypoxic marker in the near infrared region, 2-nitroimidazole -bis carboxylic acid derivative of Indocyanine Green conjugated to single walled carbon nanotube (SWCNT-2nitroimidazole-ICG). The 2-nitroimidazole-ICG has an absorption peak at 755 nm and an extinction coefficient of 20,5222 M -1 cm -1 . The conjugation of this marker with SWCNT shows more than 25 times enhancement of optical absorption of carbon nanotubes in the near infrared region. This new conjugate has been optically evaluated and shows promising results for high contrast photoacoustic imaging of deeply located tumors. The conjugate specifically targets tumor hypoxia, an important indicator of tumor metabolism and tumor therapeutic response. The detection sensitivity of the new contrast agent has been evaluated in-vitro cell lines and with in-vivo tumors in mice.
Published: 2011

243. Investigation of a diffuse optical tomography-assisted quantitative photoacoustic tomography in reflection geometry

Author: Patrick D. Kumavor, Quing Zhu, Andres Aguirre, and Chen Xu
Subjects: Optics, Transducer, Materials science, business.industry, Attenuation coefficient, Reflection (physics), Ultrasonic sensor, Tomography, business, Absorption (electromagnetic radiation), Imaging phantom, Diffuse optical imaging
Abstract: In this paper, we report the experimental investigation of a novel fitting procedure which can detect and quantitatively characterize the optical contrasts of targets using diffuse optical tomography (DOT)-assisted photoacoustic tomography. The hybrid system combines a 64-channel photoacoustic system with a 9-source, 14-detector frequency-domain DOT system. A white probe was used to house the ultrasound transducer, the optical sources and detectors. The experiment was performed in the reflection mode which is more realistic to clinical applications. The fitting procedure included a complete photoacoustic forward model, which incorporated an analytical model of light transport and a model of acoustic propagation. Using the structural information from the PAT images and the background information from DOT measurements, the photoacoustic forward model was used to recover the target absorption coefficient quantitatively. Phantom absorbers, 1 cm in diameter, with absorption coefficients ranging from 0.08 to 0.28 cm -1 were imaged at depths of up to 3.0 cm. The fitting results were at least 85% of their true values for both high and low contrast targets. Blood sample in a thin tube of radius 0.6 mm, that was simulating a blood vessel, was also imaged, and the reconstructed images and fitted absorption coefficients are presented. These results illustrate the promising application of this fitting procedure for tissue absorption coefficient characterization and consequently breast cancer diagnosis.
Published: 2011

244. A hybrid positron and OCT intraoperative probe for ovarian cancer detection and characterization

Author: Patrick D. Kumavor, Mozafareddin K. Karimeddini, Quing Zhu, Melinda Sanders, Tianheng Wang, Yi Yang, Nrusingh C. Biswal, and Molly Brewer
Subjects: Multimodal imaging, Pathology, medicine.medical_specialty, medicine.diagnostic_test, business.industry, Cancer, Ovary, medicine.disease, Positron, medicine.anatomical_structure, Optical coherence tomography, medicine, Medical physics, business, Ovarian cancer, Survival rate, Ex vivo
Abstract: Ovarian cancer has the lowest survival rate of the gynecologic cancers with a 5-year survival of about 50% in the United States. With current screening and diagnostic abilities for ovarian cancers, most of the diagnosed patients are already with advanced stages and the majority of them will die of this deadly disease. In this paper, we report a multimodal imaging approach which combines optical coherence tomography (OCT) and positron detection for early ovarian cancer detection. The dual modality system has the capability of providing both functional and morphological images simultaneously. While the positron detection provides the metabolism activity of the ovary due to the uptake of radiotracer, the OCT provides the high resolution (25μm X 25μm X 12μm - longitudinal X lateral X axial in air) structural imaging at 20k A-lines per second. Total 18 ovaries obtained from 10 patients classified as normal, abnormal and malignant ovarian tissues were characterized ex vivo. Positron counts of 1.2-fold higher was found between abnormal and normal ovaries and 3~30-fold higher was found between malignant and normal ovaries. OCT imaging of malignant and abnormal ovaries revealed many detailed morphologic features that could be potentially valuable for detecting early malignant changes in the ovary.
Published: 2011

245. Clustered targets imaged by multizone optical tomography reconstruction method

Author: Yan Xu, Chen Xu, and Quing Zhu
Subjects: medicine.diagnostic_test, Computer science, business.industry, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, medicine, Computer vision, Reconstruction algorithm, Artificial intelligence, Iterative reconstruction, Optical tomography, Ultrasonography, business, Reconstruction method
Abstract: To improve the light quantification of clustered lesions, a multi-zone reconstruction algorithm guided by co-registered ultrasound image was investigated using simulations and phantoms. The performance of the algorithm was demonstrated using clinical examples.
Published: 2011

246. Real-time co-registered ultrasound and photoacoustic imaging system based on FPGA and DSP architecture

Author: Hai Li, Quing Zhu, Umar Alqasemi, and Andres Aguirre
Subjects: Digital signal processor, business.industry, Computer science, Interface (computing), Ultrasound, Frame (networking), Photoacoustic imaging in biomedicine, Image processing, External memory interface, Tumor vasculature, Laser, Conventional ultrasound, law.invention, Wavelength, Transducer, Data acquisition, law, Ultrasound imaging, business, Double data rate, Computer hardware, Digital signal processing, Scan conversion
Abstract: Co-registering ultrasound (US) and photoacoustic (PA) imaging is a logical extension to conventional ultrasound because both modalities provide complementary information of tumor morphology, tumor vasculature and hypoxia for cancer detection and characterization. In addition, both modalities are capable of providing real-time images for clinical applications. In this paper, a Field Programmable Gate Array (FPGA) and Digital Signal Processor (DSP) module-based real-time US/PA imaging system is presented. The system provides real-time US/PA data acquisition and image display for up to 5 fps* using the currently implemented DSP board. It can be upgraded to 15 fps, which is the maximum pulse repetition rate of the used laser, by implementing an advanced DSP module. Additionally, the photoacoustic RF data for each frame is saved for further off-line processing. The system frontend consists of eight 16-channel modules made of commercial and customized circuits. Each 16-channel module consists of two commercial 8-channel receiving circuitry boards and one FPGA board from Analog Devices. Each receiving board contains an IC† that combines. 8-channel low-noise amplifiers, variable-gain amplifiers, anti-aliasing filters, and ADC's‡ in a single chip with sampling frequency of 40MHz. The FPGA board captures the LVDSξ Double Data Rate (DDR) digital output of the receiving board and performs data conditioning and subbeamforming. A customized 16-channel transmission circuitry is connected to the two receiving boards for US pulseecho (PE) mode data acquisition. A DSP module uses External Memory Interface (EMIF) to interface with the eight 16-channel modules through a customized adaptor board. The DSP transfers either sub-beamformed data (US pulse-echo mode or PAI imaging mode) or raw data from FPGA boards to its DDR-2 memory through the EMIF link, then it performs additional processing, after that, it transfer the data to the PC** for further image processing. The PC code performs image processing including demodulation, beam envelope detection and scan conversion. Additionally, the PC code pre-calculates the delay coefficients used for transmission focusing and receiving dynamic focusing for different types of transducers to speed up the imaging process. To further speed up the imaging process, a multi-threads technique is implemented in order to allow formation of previous image frame data and acquisition of the next one simultaneously. The system is also capable of doing semi-real-time automated SO2 imaging at 10 seconds per frame by changing the wavelength knob of the laser automatically using a stepper motor controlled by the system. Initial in vivo experiments were performed on animal tumors to map out its vasculature and hypoxia level, which were superimposed on co-registered US images. The real-time system allows capturing co-registered US/PA images free of motion artifacts and also provides dynamitic information when contrast agents are used.
Published: 2011

247. 3D imaging of dental hard tissues with Fourier domain optical coherence tomography

Author: Yuanxin Shou, Aruna Ramesh, Yi Yang, Tianheng Wang, Jun Yan, Quing Zhu, Jing Ma, Yueli L. Chen, and Jing Zhao
Subjects: Dental radiography, Materials science, medicine.diagnostic_test, Backscatter, business.industry, Scattering, Radiography, Resolution (electron density), Tooth surface, stomatognathic diseases, Optics, stomatognathic system, Optical coherence tomography, medicine, business, Fourier domain
Abstract: A fiber optical coherence tomography (OCT) probe is used for three dimensional dental imaging. The probe has a lightweight miniaturized design with a size of a pen to facilitate clinic in vivo diagnostics. The probe is interfaced with a swept-source / Fourier domain optical coherence tomography at 20K axial scanning rate. The tooth samples were scanned from occlusal, buccal, lingual, mesial, and distal orientations. Three dimensional imaging covers tooth surface area up to 10 mm x 10 mm with a depth about 5 mm, where a majority of caries affection occurs. OCT image provides better resolution and contrast compared to gold standard dental radiography (X-ray). In particular, the technology is well suited for occlusal caries detection. This is complementary to X-ray as occlusal caries affection is difficult to be detected due to the X-ray projectile scan geometry. The 3D topology of occlusal surface as well as the dentin-enamel junction (DEJ) surface inside the tooth can be visualized. The lesion area appears with much stronger back scattering signal intensity.
Published: 2011

248. Wavefront amplitude distortion and image sidelobe levels. II. In vivo experiments

Author: R.L. Arenson, Quing Zhu, and B.D. Steinberg
Subjects: Physics, Wavefront, Acoustics and Ultrasonics, business.industry, Function (mathematics), Amplitude distortion, PSL, Square (algebra), Image (mathematics), Optics, Amplitude, Distortion, Electrical and Electronic Engineering, business, Instrumentation
Abstract: For part I, see ibid., vol.40, no.6, p.747-753 (1993). In vivo measurements of the rise of the sidelobe level in a single-source image obtained through the female breast as a function of the distortion of the wavefront amplitude are described. The measured sidelobe levels are the average sidelobe floor (ASF) and the peak sidelobe level (PSL). The ASF is shown to be proportional to the variance of the modulus of the wavefront normalized to the square of its mean value, with a proportionality constant close to the value predicted by theory. The PSL similarly increases linearly. The average ratio of PSL to ASF is 5 (7 dB). >
Published: 1993

249. Wavefront amplitude distortion and image sidelobe levels. I. Theory and computer simulations

Author: Quing Zhu and B.D. Steinberg
Subjects: Wavefront, Physics, Diffraction, Acoustics and Ultrasonics, business.industry, Acoustics, Astrophysics::Instrumentation and Methods for Astrophysics, Phase (waves), Amplitude distortion, Background level, Image (mathematics), Optics, Quality (physics), Distortion, Electrical and Electronic Engineering, business, Instrumentation
Abstract: The quality of an imaging system is degraded by propagation anomalies that distort wavefronts propagating through the medium. Adaptive phase-deaberration algorithms compensate for phase errors in the wavefront. The algorithms suffer, however, when the wavefront is also significantly distorted. A theory which shows that the rise of image background level, which is the average sidelobe floor (ASF), in a single point-like source image is proportional to the amplitude distortion of the wavefront and inversely proportional to the effective number of array elements is derived. From the theory, the tolerance to the amplitude distortion, after the phasefront has been corrected by a deaberration algorithm, can be calculated based on the design requirement of the sidelobe floor for a given array. Computer simulations show good agreement with the theory. >
Published: 1993

250. Beam tests of the DØ uranium liquid argon end calorimeters

Author: T. Huehn, F. Stocker, Ivan Kotov, P. Lucas, J. F. Glicenstein, V. A. Bezzubov, B. Mansoulié, R. P. Smith, Jianchu Xu, F. Nang, Michael Shupe, R. Madden, L. Rasmussen, Jinghong Chen, T. Ferbel, W. Karsh, J. Yu, J. A. Guida, F. Borcherding, K. K. Ng, M. D. Marx, K. Bazizi, S. Abachi, A. Bross, H. D. Wahl, R. Stephens, D. Buchholz, Y. Xia, Harrison Prosper, R. Avellaneda, N. Amos, S. Fahey, Rajendran Raja, O. I. Dahl, S. Cherny, P. Laurens, I. Manning, E. Barasch, M. Strovink, S. Krzywdzinzski, Pushpalatha C Bhat, Stephen Wimpenny, D. Nešić, J. Kourlas, Daniel J. Smith, D. A. Stoyanova, Heng Xu, S. Youssef, A. Kholodenko, M. Mudan, R. J. Madaras, R. Ruland, A. Dyakonenkov, J. Cochran, P. Xie, Welathantri Gd Dharmaratna, T. Marshall, V. Platonov, A. Kirunin, W. Kononenko, J. A. Wightman, B. Pi, K. De, D. Norman, Y. H. Zhou, T. Heuring, A. Kernan, A. M. Davidenko, T. L. Geld, Vyacheslav Klyukhin, G. E. Forden, R. Van Berg, J. Kotcher, M. Peters, S. Igarashi, D. Hedin, Q. Z. Li-Demarteau, J. McKinley, D. Finley, A. Peryshkin, J. Borders, H. J. Martin, N. A. Roe, A. Klatchko, A. Taketani, M. J. Yang, Gregory R Snow, S. Blessing, Shuichi Kunori, Hiroaki Aihara, S.A. Kahn, Allen Mincer, J. Featherly, R. E. Avery, A. S. Ito, A. P. Vorobiev, D. Cullen-Vidal, K. Genser, A. L. Read, W. E. Cooper, J. F. Hubbard, R. E. Hall, E. Kistenev, A. Zieminski, N. Graf, B. Gobbi, P. M. Tuts, F. Lobkowicz, Ph. Mangeot, V. Riadovikov, M. Tartaglia, M. L. Good, S. Chekulaev, Robert Hirosky, E. Malamud, A. Jonckheere, N. Bozko, S. Fuess, V. I. Kochetkov, Sylvain Tisserant, Renkai Li, L. T. Kerth, A. Efimov, J. Bantly, R. Morphis, R. L. Dixon, Michael Rijssenbeek, J. Thompson, W. Smart, Andrew White, K. A. Johns, H. E. Fisk, A. Milder, B. Baldin, Y. Ducros, P. Yamin, A. Zylberstejn, D. Owen, S. Repond, G. Dugan, T. M.L. Ren, Stephan Linn, V. N. Evdokimov, B. G. Pope, Paolo Franzini, W. Selove, B. Gibbard, J. Sculli, H. Greenlee, X. C. Meng, T. G. Trippe, P. Grudberg, H. Haggerty, Sergey Denisov, S. Lökös, N. Oshima, Daria Zieminska, R. D. Schamberger, V. S. Narasimham, M. Abolins, G. Finocchiaro, D. Pizzuto, V. Glebov, Allan G Clark, J. Teiger, B. I. Klochkov, A. Baden, G. C. Blazey, David Cutts, R. E. Lanou, H. Jöstlein, R. Engelmann, A. A. Mayorov, J. T. White, P. Mooney, Yu. Pischalnikov, Serban Protopopescu, R. Huson, J. Womersley, R. Yamada, M. Fatyga, M. Diesburg, O. V. Eroshin, E. A. Kozlovsky, J. H. Christenson, Quing Zhu, S. H. Aronson, M. E. Johnson, H. T. Diehl, D. Bogert, Juliet Lee-Franzini, R. L. McCarthy, S. H. Ahn, A. Pluquet, P. Martin, John Rutherfoord, V. Burtovoy, P. Draper, K. Streets, J. Ellison, A. Suhanov, C. Cretsinger, T. Behnke, J. Yang, R. Partridge, J. N. Butler, P. D. Grannis, H. Piekarz, D. Edmunds, Raymond Brock, Boaz Klima, V. M. Podstavkov, Yu.M. Antipov, D. Denisov, G. Theodosiou, W.A. Wenzel, H. A. Neal, Z. Wolf, Peter Nemethy, C. Stewart, A. Shkurenkov, M. Paterno, James C. Green, M. Fortner, Srinivasan Rajagopalan, Dan Green, J. T. Linnemann, A. Zotov, N. Bulgakov, R. Astur, H. Weerts, M. Demarteau, M. Goforth, C. Klopfenstein, H. S. Mao, C. S. Gao, W. Guryn, S. Willis, S. Durston, Ron Lipton, L. Oesch, M. L. Stevenson, S. Feher, A. L. Spadafora, S. C. Loken, Howard Gordon, P. Rubinov, K. W. Merritt, J. F. Bartlett, J. S. Hoftun, J. M. Guida, R. Zeller, D. P. Eartly, Sharon Hagopian, E. Oltman, N. J. Hadley, C. T. Murphy, R. Cence, and C. Yoshikawa
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Monte Carlo method, Detector, Tevatron, Electron, Calorimeter, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Collider, Instrumentation, Beam (structure)
Abstract: We describe the results of beam tests of three uranium-liquid argon calorimeter modules constructed for the DO detector at the Fermilab Tevatron collider. As part of the calibration procedure, these modules were exposed to beams of electrons, pions and muons between 10 and 150 GeV/c before their installation in the end calorimeter of the completed DO detector. We obtain an electromagnetic sampling resolution of 15.7%/√E and constant term of 0.3%. The hadronic sampling resolution is 45%/√E (degraded to 50%/√E by the effects of upstream material) and the constant term is 4%. The calorimeter is linear to 0.5%, and the electromagnetic to hadronic response ratio is between 1.02 and 1.09 over this range of momenta. For an electron efficiency of 95% we obtain a rejection factor against pions of ∼ 900-3000 for particles in the momentum range between 50 and 150 GeV/c. We also compare our results with the predictions of a detailed Monte Carlo simulation.
Published: 1993

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