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1. Rapidity gaps between jets inpp¯collisions at √s=1.8 TeV

Author

S. Abachi, B. Abbott, M. Abolins, B. S. Acharya, I. Adam, D. L. Adams, M. Adams, S. Ahn, H. Aihara, G. Alvarez, G. A. Alves, N. Amos, E. W. Anderson, Yu. Antipov, S. H. Aronson, R. Astur, R. E. Avery, A. Baden, V. Balamurali, J. Balderston, B. Baldin, J. Bantly, J. F. Bartlett, K. Bazizi, T. Behnke, J. Bendich, S. B. Beri, V. Bezzubov, P. C. Bhat, V. Bhatnagar, N. Biswas, G. Blazey, S. Blessing, A. Boehnlein, F. Borcherding, J. Borders, N. Bozko, A. Brandt, R. Brock, A. Bross, D. Buchholz, V. Burtovoi, J. M. Butler, O. H. Callot, H. Castilla-Valdez, D. Chakraborty, S. Chekulaev, J. Chen, L.-P. Chen, W. Chen, L. Chevalier, S. Chopra, B. C. Choudhary, J. H. Christenson, M. Chung, D. Claes, A. R. Clark, W. G. Cobau, J. Cochran, W. E. Cooper, C. Cretsinger, D. Cullen-Vidal, M. Cummings, J. P. Cussonneau, D. Cutts, O. I. Dahl, K. De, M. Demarteau, R. Demina, K. Denisenko, N. Denisenko, D. Denisov, S. Denisov, W. Dharmaratna, H. T. Diehl, M. Diesburg, R. Dixon, P. Draper, Y. Ducros, S. Durston-Johnson, D. Eartly, D. Edmunds, A. Efimov, J. Ellison, V. D. Elvira, R. Engelmann, G. Eppley, O. Eroshin, V. Evdokimov, S. Fahey, G. Fanourakis, M. Fatyga, M. K. Fatyga, J. Featherly, S. Feher, D. Fein, T. Ferbel, G. Finocchiaro, H. E. Fisk, E. Flattum, G. E. Forden, M. Fortner, P. Franzini, S. Fredriksen, S. Fuess, C. S. Gao, T. L. Geld, K. Genser, C. E. Gerber, B. Gibbard, V. Glebov, J. F. Glicenstein, B. Gobbi, M. Goforth, M. Goldschmidt, B. Gomez, M. L. Good, H. Gordon, N. Graf, P. D. Grannis, D. R. Green, J. Green, H. Greenlee, N. Grossman, P. Grudberg, S. Grünendahl, J. A. Guida, J. M. Guida, W. Guryn, N. J. Hadley, H. Haggerty, S. Hagopian, V. Hagopian, R. E. Hall, S. Hansen, J. M. Hauptman, D. Hedin, A. P. Heinson, U. Heintz, G. Herrera-Corral, T. Heuring, R. Hirosky, B. Hoeneisen, J. S. Hoftun, T. Hu, J. R. Hubbard, T. Huehn, S. Igarashi, A. S. Ito, E. James, J. Jaques, J. Z. -Y. Jiang, T. Joffe-Minor, K. Johns, M. Johnson, H. Johnstad, A. Jonckheere, M. Jones, H. Jöstlein, C. K. Jung, S. Kahn, R. Kehoe, M. Kelly, A. Kernan, L. Kerth, A. Kholodenko, A. Kiryunin, E. Kistenev, A. Klatchko, B. Klima, B. Klochkov, C. Klopfenstein, V. Klyukhin, V. Kochetkov, J. M. Kohli, D. Koltick, J. Kotcher, I. Kotov, J. Kourlas, A. Kozelov, E. Kozlovsky, M. R. Krishnaswamy, S. Krzywdzinski, S. Kunori, S. Lami, G. Landsberg, R. E. Lanou, J. Lee-Franzini, H. Li, J. Li, R. B. Li, Q. Z. Li-Demarteau, J. G. R. Lima, S. L. Linn, J. Linnemann, R. Lipton, Y. C. Liu, F. Lobkowicz, P. Loch, S. C. Loken, S. Lokos, L. Lueking, A. K. A. Maciel, R. J. Madaras, R. Madden, Ph. Mangeot, I. Manning, B. Mansoulié, H. S. Mao, S. Margulies, R. Markeloff, L. Markosky, T. Marshall, H. J. Martin, M. I. Martin, P. S. Martin, M. Marx, B. May, A. Mayorov, R. McCarthy, T. McKibben, J. McKinley, X. C. Meng, K. W. Merritt, H. Miettinen, A. Milder, C. Milner, A. Mincer, N. K. Mondal, H. E. Montgomery, P. Mooney, M. Mudan, C. Murphy, C. T. Murphy, F. Nang, M. Narain, V. S. Narasimham, H. A. Neal, J. P. Negret, P. Nemethy, D. Nešić, D. Norman, L. Oesch, V. Oguri, E. Oltman, N. Oshima, D. Owen, M. Pang, A. Para, C. H. Park, R. Partridge, M. Paterno, A. Peryshkin, M. Peters, B. Pi, H. Piekarz, Yu. Pischalnikov, D. Pizzuto, A. Pluquet, V. Podstavkov, B. G. Pope, H. B. Prosper, S. Protopopescu, Y. K. Que, P. Z. Quintas, G. Rahal-Callot, R. Raja, S. Rajagopalan, M. V. S. Rao, L. Rasmussen, A. L. Read, S. Repond, S. Reucroft, V. Riadovikov, M. Rijssenbeek, N. A. Roe, P. Rubinov, R. Ruchti, J. Rutherfoord, A. Santoro, L. Sawyer, R. D. Schamberger, D. Schmid, J. Sculli, A. Shkurenkov, M. Shupe, J. B. Singh, V. Sirotenko, J. Skeens, W. Smart, A. Smith, D. Smith, R. P. Smith, G. R. Snow, S. Snyder, J. Solomon, P. M. Sood, M. Sosebee, M. Souza, A. L. Spadafora, R. Stephens, M. L. Stevenson, D. Stewart, F. Stocker, D. Stoyanova, K. Streets, M. Strovink, A. Suhanov, A. Taketani, M. Tartaglia, J. Teiger, J. Thompson, T. G. Trippe, P. M. Tuts, P. R. Vishwanath, A. Volkov, A. Vorobiev, H. D. Wahl, D. C. Wang, L. Z. Wang, J. Warchol, M. Wayne, H. Weerts, W. A. Wenzel, A. White, J. T. White, J. A. Wightman, J. Wilcox, S. Willis, S. J. Wimpenny, Z. Wolf, J. Womersley, D. R. Wood, Y. Xia, D. Xiao, P. P. Xie, H. Xu, R. Yamada, P. Yamin, C. Yanagisawa, J. Yang, M.-J. Yang, T. Yasuda, C. Yoshikawa, S. Youssef, J. Yu, C. Zeitnitz, S. Zhang, Y. H. Zhou, Q. Zhu, Y. S. Zhu, D. Zieminska, A. Zieminski, A. Zinchenko, and A. Zylberstejn

Subjects
Physics, Particle physics, Particle properties, Astrophysics::High Energy Astrophysical Phenomena, Computer Science::Information Retrieval, Tevatron, General Physics and Astronomy, Kinetic energy, law.invention, Nuclear physics, law, Pseudorapidity, High Energy Physics::Experiment, Rapidity, Fermilab, Collider, Bar (unit)
Abstract

First experimental results are presented from a search for events with a rapidity gap between jets. The D0 detector was used to examine events produced by the Fermilab Tevatron [ital p[bar p]] collider at [radical][ital s] =1.8 TeV. The fraction of events with an observed rapidity gap between the two highest transverse energy ([ital E][sub [ital T]]) jets is measured as a function of the pseudorapidity separation between the jet edges ([Delta][eta][sub [ital c]]). An upper limit at the 95% confidence level of 1.1[times]10[sup [minus]2] is obtained on the fraction of events with non particles between the jets, for events with [Delta][eta][sub [ital c]][gt]3 and jet [ital E][sub [ital T]] greater than 30 GeV.

Published
1994

2. 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

3. The DØ detector

Author

V. N. Evdokimov, Ron Lipton, K. K. Ng, J. Womersley, F. Stocker, D. Cullen-Vidal, K. Genser, H. Weerts, J. Cochran, Daniel J. Smith, P. Xie, S. Feher, V. Manzella, B. Gobbi, K. Denisenko, T. G. Trippe, E. Barasch, Brajesh C Choudhary, H.J. Stredde, Shuichi Kunori, Jasvinder A. Singh, S. Igarashi, Stephen Wimpenny, M. A. C. Cummings, Q. Z. Li-Demarteau, P. J. Kroon, J. N. Butler, P. D. Grannis, J. R. Hubbard, S. Zhang, T. Marshall, Yu.M. Antipov, E. James, N. A. Roe, G. Theodosiou, C. T. Murphy, B. Pi, Matthew Jones, J. A. Guida, G. Krafczyk, C. K. Jung, A. Kirunin, Darien Wood, A. Bross, R. Astur, Nicholas John Hadley, M. L. Good, W. Anderson, H. J. Martin, G. Fanourakis, Ulrich Heintz, K. Streets, B. Baldin, P.R. Vishwanath, D. Xiao, S. Blessing, J. Bantly, Hiroaki Aihara, D. Finley, Y. Ducros, H. Jöstlein, Scott Snyder, Rajendran Raja, M.R. Marcin, M. D. Marx, D. Zieminska, Elizabeth Gallas, S. Fuess, N. Grossman, J. Borders, S. Durston-Johnson, D. Owen, V. Sirotenko, G. Finocchiaro, S. C. Loken, O. V. Eroshin, Daniel R Claes, X. C. Meng, H. D. Wahl, W. Selove, D. Pizzuto, N. Denisenko, J. Z.Y. Jiang, W. Kononenko, Mingming Yang, D. Mendoza, Y. S. Zhu, R. Van Berg, S. Repond, Pm Tuts, Vasken Hagopian, R. Zeller, S. Protopopescu, A. S. Ito, F. Goozen, Andrew Brandt, C. Yoshikawa, R. Engelmann, Liu Chen, V. Glebov, D. Buchholz, A. Para, Marvin Johnson, I. Manning, Victor Daniel Elvira, H. Greenlee, Philippe Eberhard, Welathantri Gd Dharmaratna, E. A. Kozlovsky, Robert Hirosky, Sergey Denisov, Bobby Samir Acharya, H. A. Neal, Andrew White, A. Baden, S. H. Aronson, Kaushik De, Howard Gordon, M. Abolins, A. Zinchenko, W. Smart, D. Norman, M. Goforth, N. Bozko, S. Youssef, W. Y. Chen, L. Markosky, P. Mooney, R. J. Madaras, T. L. Geld, A. Klatchko, T. Heuring, H. E. Fisk, D. Nešić, Y. K. Que, V. Oguri, Heng Xu, G. C. Blazey, M. Sosebee, H. T. Diehl, H. Haggerty, Paolo Franzini, V. S. Narasimham, D. P. Eartly, Sharon Hagopian, Yu. Pischalnikov, J. McKinley, D. Hedin, A. Zieminski, C. Cretsinger, S. Lökös, J. F. Bartlett, Ivan Kotov, J. F. Glicenstein, J. Balderston, M. Strovink, K. Krempetz, V. A. Bezzubov, J. Ellison, A. K.A. Maciel, Raymond Brock, Boaz Klima, Z. Wolf, Meenakshi Narain, A. Peryshkin, R. P. Smith, R. L. McCarthy, Sissel Hansen, A. A. Mayorov, P. Grudberg, J. Yang, B. Daniels, Renkai Li, Srinivasan Rajagopalan, A. Suhanov, M. R. Krishnaswamy, F. Nang, Thomas Ferbel, Dan Green, T. Regan, T. Behnke, V. Burtovoy, L. T. Kerth, Michael Shupe, J. A. Wightman, Gilvan Alves, C. S. Gao, J. Sculli, M. Diesburg, A. Efimov, Kenneth Johns, A. Milder, Juliet Lee-Franzini, R. Huson, C. R. Johnson, C. Murphy, Gregory R Snow, D. Denisov, K. Bazizi, V. M. Podstavkov, S. Willis, M. Pang, L. Sawyer, Harrison Prosper, Sergey Chekulaev, S. Fahey, V. I. Kochetkov, Sylvain Tisserant, Peter Nemethy, R. Stephens, B. May, J. Kourlas, A. V. Kozelov, C. Klopfenstein, J. D. Taylor, Allan G Clark, Bruno Mansoulie, I. Adam, P. Rubinov, M. Paterno, N. K. Mondal, S. Stampke, F. Lobkowicz, L. Z. Wang, David Cutts, K. W. Merritt, R. L. Dixon, A. L. Spadafora, W. A. Wenzel, Michael Rijssenbeek, G. T. Mulholland, R. E. Lanou, S. H. Ahn, M. Fatyga, Allen Mincer, D. Stewart, M. Vaz, J. Thompson, Yanwen Liu, S. Kanekal, D. A. Stoyanova, A. Zylberstejn, L. Lueking, J. S. Hoftun, O. Callot, M. L. Stevenson, J. M. Guida, Alexey Volkov, E. Malamud, J. M. Kohli, R. Partridge, Dhiman Chakraborty, G. Rahal-Callot, N. Amos, Quing Zhu, P. Yamin, S. Abachi, Orin I. Dahl, John Rutherfoord, J. Featherly, T. Huehn, M. F. Shea, D. Fein, M. Fortner, P. Laurens, D. Edmunds, J. Linnemann, Alberto Santoro, J. G.R. Lima, Y. H. Zhou, G. E. Forden, A. P. Heinson, Y. Xia, A. Kernan, R. E. Hall, S. Lami, S. Krzywdzinski, A. L. Read, R. Yamada, V. Riadovikov, A. Pluquet, P. Martin, A. Jonckheere, C. Yanagisawa, M. D. Peters, James C. Green, L. Oesch, W. Guryn, M. H.G. Souza, D. Lloyd-Owen, Greg Landsberg, B. I. Klochkov, J. M. Hauptman, Cecilia Elena Gerber, F. Borcherding, H. Piekarz, E. Oltman, Li Jingyuan, Vyacheslav Klyukhin, B. Gibbard, M. Tartaglia, Stephan Linn, N. Oshima, A. Smith, D. C. Wang, R. Madden, L. Rasmussen, Jinghong Chen, Peter W. Draper, Pushpalatha C Bhat, M. Mudan, A. Taketani, S.A. Kahn, M. Demarteau, R. E. Avery, W. G. Cobau, M. I. Martin, E. Flattum, Ph. Mangeot, A. Shkurenkov, C. H. Park, H. S. Mao, W. E. Cooper, N. Graf, J. Yu, M. V. S. Rao, M. Montag, Alexander Vorobiev, G. Álvarez, J. Kotcher, B. G. Pope, J. Teiger, R. D. Schamberger, J. T. White, A. Boehnlein, P. Z. Quintas, K. Hodel, and J. H. Christenson

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Detector, Tevatron, D0 experiment, law.invention, Nuclear physics, Transition radiation detector, Data acquisition, law, Hermetic detector, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Collider, Instrumentation
Abstract

The DØ detector is a large general purpose detector for the study of short-distance phenomena in high energy antiproton-proton collisions, now in operation at the Fermilab Tevatron collider. The detector focusses upon the detection of electrons, muons, jets and missing transverse momentum. We describe the design and performance of the major elements of the detector, including the tracking chambers, transition radiation detector, liquid argon calorimetry and muon detection. The associated electronics, triggering systems and data acquisition systems are presented. The global mechanical, high voltage, and experiment monitoring and control systems which support the detector are described. We also discuss the design and implementation of software and software support systems that are specific to DØ. © 1994.

Published
1994

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