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101. 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

102. 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

103. 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

104. 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

105. 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

106. 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

107. Polarization studies of comet P/Swift-Tuttle

Author: S. M. Scarrott, N. Eaton, and Peter W. Draper
Subjects: Swift, Physics, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics, Polarization (waves), computer, computer.programming_language
Published: 1995

108. Imaging polarimetry of the blue compact galaxy NGC 3125

Author: T. M. Gledhill, Peter W. Draper, P. B. Alton, S. M. Scarrott, D. P. Stockdale, and R. D. Wolstencroft
Subjects: Physics, Barred spiral galaxy, Space and Planetary Science, Polarimetry, Astronomy, Astronomy and Astrophysics, Type-cD galaxy, Astrophysics, Interacting galaxy, Lenticular galaxy, Galaxy, Dwarf galaxy
Published: 1994

109. Imaging polarimetry of the starburst galaxy NGC 1808: another M82?

Author: Peter W. Draper, D. P. Stockdale, S. M. Scarrott, and R. D. Wolstencroft
Subjects: Physics, Nebula, Spiral galaxy, Reflection nebula, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Astronomy and Astrophysics, Optical polarization, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy, Barred spiral galaxy, Space and Planetary Science, Unbarred spiral galaxy, Interacting galaxy, Astrophysics::Galaxy Astrophysics
Abstract: An optical polarization map for the starburst galaxy NGC 1808 is presented. On kiloparsec scales the polarization orientations follow the spiral arms, indicative of a magnetic field that is coherent on a galactic scale. The inner parts (
Published: 1993

110. The optical polarization of the low-redshift radio galaxies 3CR 33, 305, 321 and 459

Author: Clive Tadhunter, Peter W. Draper, and S. M. Scarrott
Subjects: Physics, Active galactic nucleus, Space and Planetary Science, Polarization in astronomy, Scattering, Radio galaxy, Astronomy and Astrophysics, Optical polarization, Astrophysics, Polarization (waves), Dichroic glass, Redshift
Abstract: Polarization maps of a sample of spatially resolved low-z radio galaxies show that there are two components to the polarization. One component is intrinsic to the nucleus, while the other is restricted to elongated or fan-like areas which are centred on the nucleus and are cospatial with the known, extended emission-line regions. The orientation of the nuclear polarization is at large angles to the orientation of the extended polarization and approximately parallel to the main extended structures seen on our polarized intensity maps. These results can be explained in terms of a simple scattering model, although we cannot completely rule out contributions from other mechanisms, such as dichroic extinction by aligned dust grains
Published: 1993

111. The nature of the optical nebulosity surrounding the star RNO 91 in the L 43 dark cloud

Author: Clive Tadhunter, S. M. Scarrott, and Peter W. Draper
Subjects: Physics, Nebula, Star formation, Reflection nebula, Astrophysics::High Energy Astrophysical Phenomena, Molecular cloud, Astronomy, Astronomy and Astrophysics, Optical polarization, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Interstellar medium, T Tauri star, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Emission spectrum, Astrophysics::Galaxy Astrophysics
Abstract: Polarizarion maps of the L43/RNO 91 nebulosity show that it is a large-scale reflection nebula illuminated by the T Tauri star RNO 91. The highly structured nebulosity within 40 arcsec of the central illuminator, which includes knots and a possible jet, is also seen solely by reflected light, and we have no evidence for the presence of emission-line features such as Herbig-Haro objects and stellar jets. We find evidence for a small-scale circumstellar disc of diameter no larger than 1200 au and possibly as small as 160 au, or even less, which we believe has collimated the outflow leading to the visible nebula. We speculate on the cause of the lack of alignment between the optical and molecular features
Published: 1993

112. Imaging polarimetry of the bipolar nebula Parsamyan 22

Author: Clive Tadhunter, S. M. Scarrott, and Peter W. Draper
Subjects: Physics, Nebula, Reflection nebula, Star formation, Astrophysics::High Energy Astrophysical Phenomena, Astronomy, Astronomy and Astrophysics, Bipolar nebula, Astrophysics, Polarization (waves), Protoplanetary nebula, Emission nebula, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Stellar evolution, Astrophysics::Galaxy Astrophysics
Abstract: Par 22 shows high levels of polarization which confirm that it is a bipolar reflection nebula. We suggest that circumstellar material, which is very patchy and forms fingers which penetrate the central regions of the nebula, is the remnant of the circumstellar disc which is in the process of disintegration. We take this as an indication that the system is in the later stages of pre-main-sequence evolution. We discuss the origin of the sharp rim/diffuse boundary of each of the nebular lobes
Published: 1993

113. Optical, infrared, radio and polarization imaging of the high-redshift galaxy IRAS F10214 + 4724

Author: Clive Tadhunter, Andy Taylor, Richard G. McMahon, Michael Rowan-Robinson, Perry B. Hacking, Rowan Ellis, George Efstathiou, W. Saunders, C. D. Rolph, C. J. Lonsdale, S. M. Scarrott, Tom Broadhurst, Andy Lawrence, S. J. Oliver, Tim Conrow, James J. Condon, and Peter W. Draper
Subjects: Luminous infrared galaxy, Physics, Active galactic nucleus, Radio galaxy, Astronomy, Astronomy and Astrophysics, Quasar, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Position angle, Galaxy, Redshift, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Radio astronomy
Abstract: Optical and near-IR images of the extremely luminous high-redshift IRAS source F10214+4724 both show a compact core surrounded by diffuse emission. The diffuse emission contains ∼12 per cent of the light at optical wavelengths and ∼30 per cent at near-IR wavelengths, and is asymmetric, extending 4 arcsec at position angle ∼ 30°. Radio maps at 1.49 and 8.44 GHz show an elongated structure of size 0.6×0.3 arcsec 2 roughly perpendicular to the diffuse optical-IR material, at position angle ∼110°; in other words, the alignment effect seen here is just the opposite of that seen in high-redshift radio galaxies
Published: 1993

114. Star formation in dark globules in the Gum Nebula

Author: S. M. Scarrott, Peter W. Draper, R. D. Wolstencroft, and C. D. Rolph
Subjects: Physics, Interstellar medium, Space and Planetary Science, Star formation, Linear polarization, Reflection nebula, Gum Nebula, Astronomy, Astronomy and Astrophysics, Optical polarization, Astrophysics
Abstract: Optical polarization maps of small nebulosities (Re5 and IRAS 08211-4158) associated with IRAS sources located in dark globules are presented and used to determine the positions of the illuminators. The IRAS 08211-4158 system is found to have two illuminators, one corresponding to the hidden IRAS source while the other is a visible star shrouded in nebulosity. These results are combined with earlier ones for CG30/HH120 and HH46/47 to look at the overall picture of low-mass star formation in the complex of dark globules within the Gum Nebula
Published: 1992

115. Imaging polarimetry of the galaxy NGC 4151: further constraints on the geometry of the narrow emission line region

Author: S. M. Scarrott, Peter W. Draper, T. M. Gledhill, and Clive Tadhunter
Subjects: Physics, Active galactic nucleus, Astrophysics::High Energy Astrophysical Phenomena, Polarimetry, Astronomy, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Polarization (waves), Position angle, Galaxy, Collimated light, Light scattering, Space and Planetary Science, Emission spectrum, Astrophysics::Galaxy Astrophysics
Abstract: NGC 4151 shows structure in the levels and pattern of polarization on all size-scales. On the large scale the polarization pattern tends to follow the spiral structure of the galaxy which can be traced to within ∼ 20 arcsec of the nucleus in the I waveband. In the V and Hα wavebands there is a jet-like structure of polarized (scattered) light at position angle 230° which coincides with the ENLR while the nuclear polarization is orthogonal to the arcsec-scale radio jets at position angles of ∼ 80°. The results show that there are polarization features, arising from the scattering of light from the central nucleus, allied to both the radio and ENLR collimation axes
Published: 1992

116. The optical polarizations of high- and intermediate-redshift radio galaxies

Author: Clive Tadhunter, Peter W. Draper, S. M. Scarrott, and C. D. Rolph
Subjects: Physics, Active galactic nucleus, Radio galaxy, Astronomy, Astronomy and Astrophysics, Optical polarization, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Polarization (waves), Light scattering, Galaxy, Redshift, Interstellar medium, Space and Planetary Science, Astrophysics::Galaxy Astrophysics
Abstract: Optical polarization measurements are presented for 12 high- and intermediate-redshift radio galaxies (0.2 0.5 objects with good polarization measurements have their integrated light polarized at the 5-20 per cent level. This result, and the fact that the polarization is frequently oriented perpendicular to the radio axis, suggests that a large fraction of the UV continuum has been scattered out of radiation beams from the AGN by dust or electrons in the high-redshift host galaxies. In contrast, it is found that none of the intermediate-redshift (0.2 5 per cent level
Published: 1992

117. Inclusive jet cross section inp¯pcollisions at √s=1.8 TeV

Author: D. Fein, Don Lincoln, Erich Varnes, Daniel John Karmgard, T. Fahland, B. G. Pope, B. May, R. Raja, M. Sosebee, R. L. McCarthy, Elizaveta Shabalina, D. Casey, J. Kotcher, T. Joffe-Minor, Jing Li, T. G. Trippe, A. L. Lyon, Shuichi Kunori, R. K. Shivpuri, V. Vaniev, E. Flattum, J. Bantly, Jasvinder A. Singh, K. Del Signore, R. Snihur, J. S. Hoftun, T. Yasuda, J. T. White, H. E. Fisk, P. Hanlet, Peter Nemethy, M. Roco, A. Para, S. Fuess, Matthew Jones, C. Cretsinger, M. Strovink, K. Streets, Vipin Bhatnagar, Ricardo Piegaia, C. Yoshikawa, M. Zielinski, Z. Zhou, Andrew Brandt, R. Engelmann, Liu Chen, C. Murphy, E. James, M. Chung, R. Partridge, E. Smith, Hiroaki Aihara, R. Astur, E. A. Kozlovsky, H.E. Miettinen, G. Eppley, T. Heuring, L. Lueking, H. Haggerty, Y. H. Zhou, S. M. Chang, T. McKibben, Suyong Choi, Kaushik De, G. E. Forden, A. P. Heinson, B. Zhang, H. S. Mao, J. Solomon, M. Tartaglia, D. L. Adams, P. M. Tuts, Richard Breedon, M. H.G. Souza, P. Yepes, J. Sculli, H. da Motta, J. G.R. Lima, E. G. Zverev, J. M. Hauptman, Cecilia Elena Gerber, V. V. Babintsev, Z. Wu, Vladimir Gavrilov, R. Jesik, H. E. Montgomery, S. Mani, R. E. Hall, R. W. Stephens, Joan A. Guida, Jianming Qian, J. Jaques, A. S. Ito, Allan G Clark, J. L. González Solís, H. Piekarz, Z. Casilum, M. L. Stevenson, Ron Lipton, J. McKinley, R. J. Madaras, Robert Hirosky, Gordon Watts, Meenakshi Narain, J. Womersley, V. Sirotenko, A. Jonckheere, Tong Hu, T. Marshall, S. A. Jerger, David Cutts, A. Leflat, Allen Mincer, Wagner Carvalho, Dhiman Chakraborty, G. Di Loreto, Y. Pischalnikov, Ulrich Heintz, Sebastian Grinstein, O. V. Eroshin, Stephan Linn, A. Narayanan, Elizabeth Gallas, H. Jöstlein, W. Y. Chen, Phillip Gutierrez, J. M. Guida, D. Hedin, A. Zylberstejn, P. Gartung, P. Z. Quintas, Stephen Wimpenny, W. G. Cobau, M. I. Martin, Mark Raymond Adams, D. Karmanov, M. Bhattacharjee, N. Oshima, D. P. Stoker, J. McDonald, H. Greenlee, M. Diesburg, G. Gutierrez, George R. Kalbfleisch, V. A. Bezzubov, J. P. Negret, Kenneth Johns, E. W. Anderson, R. P. Smith, Andrew White, P. Grudberg, T. McMahon, J. H. Christenson, Daria Zieminska, D. Owen, R. D. Schamberger, Philip Baringer, A. Bross, A.K. Gupta, D. Vititoe, R. J. Genik, Sharon Hagopian, N. Graf, Michael A. Strauss, Srinivasan Rajagopalan, J. Tarazi, P. Padley, Alexey Volkov, Michael Shupe, G. Wang, Alberto Santoro, Y. Fisyak, G. Finocchiaro, Marvin Johnson, Darien Wood, Thomas Ferbel, Dan Green, Serban Protopopescu, W. E. Cooper, Daniel R Claes, V. Balamurali, N. Parua, V.V. Abramov, Sunanda Banerjee, Brajesh C Choudhary, S. Krzywdzinski, Seong Keun Kim, D. Buchholz, A. K.A. Maciel, Edilamar Menezes de Oliveira, Nicholas John Hadley, H. Alves, Pushpalatha C Bhat, Bobby Samir Acharya, H. A. Neal, S. C. Loken, S. Blessing, Brad Abbott, K. Gounder, James H Cochran, M. Fortner, M. R. Krishnaswamy, H. C. Shankar, J. T. Linnemann, A. V. Kotwal, Harrison Prosper, C. Klopfenstein, Mitchell Wayne, H. Schellman, J. M. Kohli, John Hobbs, P. Tamburello, K. Yip, A. A. Mayorov, Scott Snyder, B. Lauer, M. A.C. Cummings, R. Markeloff, B. Hoeneisen, C. Boswell, Lee Sawyer, M. K. Fatyga, G. Steinbrück, Steve Reucroft, J. Perkins, Alexander Belyaev, F. Lobkowicz, Heriberto Castilla-Valdez, Heng Xu, V. S. Narasimham, D. Stewart, Anna Goussiou, T. Rockwell, Iain Alexander Bertram, Jinhong Yu, Sergey Denisov, A.S. Dyshkant, Young-Sang Yu, S. N. Gurzhiev, Y. M. Park, Michael Rijssenbeek, Stefan Grünendahl, L. Magaña-Mendoza, J. Thompson, S.A. Kahn, J. Snow, Arnaud Lucotte, B. Gómez, Suman Bala Beri, B. Gibbard, V. N. Evdokimov, Gervasio Gomez, P. Yamin, D.S. Koltick, P. Ermolov, M. Demarteau, M. Merkin, Gregory R Snow, Z. H. Zhu, Viatcheslav Stolin, Q. Z. Li-Demarteau, S. Feher, K. M. Mauritz, Ting Hu, C. Shaffer, D. Cullen-Vidal, K. Genser, N. N. Biswas, R. Hernández-Montoya, Shashikant Dugad, N. Sotnikova, Nikos Varelas, S. Chopra, L. Babukhadia, Raymond Brock, Boaz Klima, J. Krane, Randy Ruchti, C. S. Mishra, V. S. Burtovoi, D. Edmunds, D. Norman, A. Zieminski, G. Guglielmo, R. Madden, S. Willis, Andre Sznajder, F. Stichelbaut, Peter W. Draper, H. D. Wahl, B. Gobbi, V. Oguri, Vasken Hagopian, A. V. Kostritskiy, Winston Ko, M. D. Peters, H. Weerts, A. V. Kozelov, Lev Dudko, Sissel Hansen, J. Warchol, J. V.D. Wirjawan, S. Y. Jun, L. Coney, D. A. Stoyanova, T. L.T. Thomas, N. Mokhov, C. K. Jung, Dmitri Denisov, Y. Gershtein, N. Amos, Emanuela Barberis, A. P. Vorobiev, L. T. Goss, A. N. Galyaeav, M. Abolins, P. Mooney, N. K. Mondal, H. T. Diehl, M. L. Kelly, H. Singh, Howard Gordon, A. Boehnlein, K. C. Frame, O. Ramirez, I. Adam, P. Rubinov, J. Ellison, H. L. Melanson, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, V. Manankov, P. I. Goncharov, C. Miao, A. Baden, G. C. Blazey, R. Yamada, S. H. Ahn, B. Pawlik, Orin I. Dahl, F. Landry, John Rutherfoord, F. Borcherding, E. Oltman, L. Oesch, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, B. Baldin, F. Nang, Y. Ducros, F. Hsieh, K. S. Hahn, Sergey Kuleshov, Greg Landsberg, Sergey Chekulaev, Victor Daniel Elvira, T. L. Geld, M. Paterno, S. Youssef, A. Sanchez-Hernandez, Robert Kehoe, Eunil Won, P. Bloom, J. A. Wightman, N. I. Bojko, K. Davis, J. N. Butler, P. D. Grannis, and T. Huehn
Subjects: Quark, Physics, Quantum chromodynamics, Particle physics, Computer Science::Information Retrieval, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Jet (particle physics), Lambda, Physics::Accelerator Physics, High Energy Physics::Experiment, Production (computer science), Fermilab, Collider Detector at Fermilab
Abstract: We present a measurement of the inclusive jet cross section in {ital {bar p}p} collisions at {radical}{ital s} =1.8 TeV at the Fermilab Tevatron using the Collider Detector at Fermilab. Good agreement is seen with the predictions of recent next-to-leading-order ({ital O}({alpha}{sub {ital s}}{sup 3})) QCD predictions. The dependence of the cross section on clustering cone size is reported for the first time. An improved limit on {Lambda}{sub {ital c}}, a term characterizing possible quark substructure, is set at 1.4 TeV (95% C.L.).
Published: 1992

118. Production of high-ptjets in hadron-nucleus collisions

Author: V.V. Abramov, J. Ares, S. Gupta, T. L. Watts, V. Kryshkin, A. Zieminski, S. P. Denisov, Sharon Hagopian, V. Glebov, B. Baldin, A. Salminen, E. Malamud, T. Sulanke, D. McLeod, J. P. Martin, L. Dauwe, C. Halliwell, P.T. Smith, H. Goldberg, T. Marshall, A. Sambamurti, S. Margulies, A.I. Petrukhin, G. B. Yodh, R.M. Heinz, H. Haggerty, G. Wu, J. Krider, R.R. Crittenden, S. Blessing, R.M. Sulyaev, Yu.M. Antipov, J. A. Goodman, M. Nikolic, R. W. Ellsworth, J. Solomon, Rapson Gomez, A. R. Dzierba, Peter W. Draper, R. Abrams, Yu.P. Gorin, C. Stewart, and Sergey S.A. Polovnikov
Subjects: Physics, Quantum chromodynamics, Nuclear reaction, Hadron, Kinematics, Nuclear physics, Transverse plane, medicine.anatomical_structure, Cluster (physics), medicine, High Energy Physics::Experiment, Quantum field theory, Nuclear Experiment, Nucleus
Abstract: We present results on the production of jets and "jetlike" clusters in 800-GeV/c proton-nucleus (pA ) collisions. Events with high values of transverse energy in the central kinematic region were selected for nuclear targets of H, Be, C, Cu, and Pb. A jet-finding algorithm was used in analyzing the data. The A dependence of the jet and dijet cross sections was parametrized as Aα. The values of α for events with "jetlike" cluster pairs found by the algorithm without any additional kinematic cuts reach a plateau of approximately 1.5 at dijet transverse energies > GeV. The collimation of observed "jetlike" clusters decreases with A, and the fragmentation is softer for heavier target nuclei. However, nuclear effects become less pronounced with the increasing cluster or cluster-pair transverse energy. We argue that the observed nuclear enhancement for the production of "jetlike" clusters is due to underlying event or/and soft-scattering contributions to the heavy-nuclei data. We show that the nuclear enhancement becomes consistent with a value of α within 0.10 from unity once the data are corrected for the underlying event or kinematic cuts enhancing clear jet structure are applied.
Published: 1990

119. Adependence of highly inelasticp-nucleus collisions

Author: R.M. Sulyaev, Sharon Hagopian, T. Sulanke, R. Abrams, J. A. Goodman, E. Malamud, Sergey S.A. Polovnikov, R. W. Ellsworth, R. Gomez, R.R. Crittenden, J. Solomon, D. McLeod, V.V. Abramov, A. Salminen, A.I. Petrukhin, T. L. Watts, Yu.P. Gorin, P.T. Smith, R.M. Heinz, Yu.M. Antipov, Sergey Denisov, H. Haggerty, C. Halliwell, G. Wu, C. Stewart, S. Gupta, J. Ares, S. Margulies, J. Krider, A. R. Dzierba, V. Kryshkin, V. Glebov, H. Goldberg, B. Baldin, Peter W. Draper, J. Martin, T. Marshall, M. Nikolic, A. Sambamurti, A. Zieminski, S. Blessing, L. Dauwe, and G. B. Yodh
Subjects: Nuclear physics, Physics, Nuclear reaction, Missing energy, Scattering, Computer Science::Information Retrieval, Phase space, Multiplicity (chemistry), Inelastic scattering, Atomic physics, Nuclear Experiment, Space (mathematics), Particle density
Abstract: The nuclear ({ital A}) dependence of the event structure in the central and forward (projectile fragmentation) regions has been studied for highly inelastic proton-nucleus ({ital pA}) collisions at an incident momentum of 800 GeV/{ital c}. Events with high values of transverse energy ({ital E}{sub {ital t}}) were selected using the large-acceptance Fermilab multiparticle spectrometer. The multiplicity distributions and energy flows in different regions of phase space are presented for six nuclear targets: H, Be, C, Al, Cu, and Pb. The event structure for highly inelastic {ital pA} collisions is strongly dependent on the transverse energy observed in the central region. However at a fixed {ital E}{sub {ital t}}, there is only a weak nuclear dependence of event structure in the central and forward fragmentation regions. This observation is consistent with a thermodynamical description of inelastic {ital pA} interactions and suggests that the observed {ital E}{sub {ital t}} is a good measure of the inelasticity of the reaction. The nuclear dependence of event structure on the particle density and the energy in the forward fragmentation region is also discussed. In contrast with {ital E}{sub {ital t}} as a variable, the particle density and the forward missing energy provide measures of eventmore » inelasticity that are {ital A} dependent.« less
Published: 1990

120. THE TIME DOMAIN SPECTROSCOPIC SURVEY: VARIABLE SELECTION AND ANTICIPATED RESULTS

Author: Mara Salvato, Paul A. Price, Michael Eracleous, Mahmoud Parvizi, Keivan G. Stassun, John J. Ruan, Fabian Walter, William S. Burgett, Eduardo Bañados, Eric Morganson, Nigel Metcalfe, Suzanne L. Hawley, Brandon C. Kelly, Edward F. Schlafly, Yue Shen, C. Badenes, Isabelle Pâris, Adam D. Myers, Scott F. Anderson, H. Flewelling, Donald P. Schneider, J. T. Tonry, W. N. Brandt, Matthew A. Bershady, Rolf-Peter Kudritzki, Christopher Waters, K. C. Chambers, Peter M. Garnavich, Nick Kaiser, Klaus W. Hodapp, Michael R. Blanton, Paul J. Green, Tom Shanks, Jura Borissova, Jeffrey S. Morgan, Peter W. Draper, James R. A. Davenport, Karen Kinemuchi, Jedidah Isler, and Radosław Poleski
Subjects: Physics, education.field_of_study, Population, Astronomy, Astronomy and Astrophysics, Quasar, Astrophysics::Cosmology and Extragalactic Astrophysics, Large Synoptic Survey Telescope, Astrophysics, RR Lyrae variable, Redshift, Galaxy, Stars, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Variable star, education, Astrophysics::Galaxy Astrophysics
Abstract: We present the selection algorithm and anticipated results for the Time Domain Spectroscopic Survey (TDSS). TDSS is an Sloan Digital Sky Survey (SDSS)-IV Extended Baryon Oscillation Spectroscopic Survey (eBOSS) subproject that will provide initial identification spectra of approximately 220,000 luminosity-variable objects (variable stars and active galactic nuclei across 7500 deg2 selected from a combination of SDSS and multi-epoch Pan-STARRS1 photometry. TDSS will be the largest spectroscopic survey to explicitly target variable objects, avoiding pre-selection on the basis of colors or detailed modeling of specific variability characteristics. Kernel Density Estimate analysis of our target population performed on SDSS Stripe 82 data suggests our target sample will be 95% pure (meaning 95% of objects we select have genuine luminosity variability of a few magnitudes or more). Our final spectroscopic sample will contain roughly 135,000 quasars and 85,000 stellar variables, approximately 4000 of which will be RR Lyrae stars which may be used as outer Milky Way probes. The variability-selected quasar population has a smoother redshift distribution than a color-selected sample, and variability measurements similar to those we develop here may be used to make more uniform quasar samples in large surveys. The stellar variable targets are distributed fairly uniformly across color space, indicating that TDSS will obtain spectra for a wide variety of stellar variables including pulsating variables, stars with significant chromospheric activity, cataclysmic variables, and eclipsing binaries. TDSS will serve as a pathfinder mission to identify and characterize the multitude of variable objects that will be detected photometrically in even larger variability surveys such as Large Synoptic Survey Telescope.
Published: 2015

121. TOWARD CHARACTERIZATION OF THE TYPE IIP SUPERNOVA PROGENITOR POPULATION: A STATISTICAL SAMPLE OF LIGHT CURVES FROM Pan-STARRS1

Author: Armin Rest, R. P. Kirshner, Christopher M. Waters, R. Lunnan, Edo Berger, Ryan J. Foley, John Morgan, Seppo Mattila, Nick Kaiser, Klaus W. Hodapp, Nathan Edward Sanders, R. P. Kudritzki, W. S. Burgett, Peter W. Draper, Erkki Kankare, Michael Betancourt, M. E. Huber, Gautham Narayan, R. Chornock, Ryan McKinnon, S. J. Smartt, P. Challis, P. A. Price, Dan Milisavljevic, John L. Tonry, Alicia Soderberg, Suvi Gezari, Nigel Metcalfe, Maria R. Drout, G. H. Marion, E. A. Magnier, R. Margutti, and R. J. Wainscoat
Subjects: Stellar mass, Astrophysics::High Energy Astrophysical Phenomena, media_common.quotation_subject, Population, general [Supernovae], FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Cosmology, Luminosity, Astrophysics::Solar and Stellar Astrophysics, Red supergiant, education, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, media_common, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, education.field_of_study, Astronomy and Astrophysics, Light curve, Supernova, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, Sky, Surveys, Astrophysics - High Energy Astrophysical Phenomena
Abstract: In recent years, wide-field sky surveys providing deep multi-band imaging have presented a new path for indirectly characterizing the progenitor populations of core-collapse supernovae (SN): systematic light curve studies. We assemble a set of 76 grizy-band Type IIP SN light curves from Pan-STARRS1, obtained over a constant survey program of 4 years and classified using both spectroscopy and machine learning-based photometric techniques. We develop and apply a new Bayesian model for the full multi-band evolution of each light curve in the sample. We find no evidence of a sub-population of fast-declining explosions (historically referred to as "Type IIL" SNe). However, we identify a highly significant relation between the plateau phase decay rate and peak luminosity among our SNe IIP. These results argue in favor of a single parameter, likely determined by initial stellar mass, predominantly controlling the explosions of red supergiants. This relation could also be applied for supernova cosmology, offering a standardizable candle good to an intrinsic scatter of 0.2 mag. We compare each light curve to physical models from hydrodynamic simulations to estimate progenitor initial masses and other properties of the Pan-STARRS1 Type IIP SN sample. We show that correction of systematic discrepancies between modeled and observed SN IIP light curve properties and an expanded grid of progenitor properties, are needed to enable robust progenitor inferences from multi-band light curve samples of this kind. This work will serve as a pathfinder for photometric studies of core-collapse SNe to be conducted through future wide field transient searches., Comment: 25 pages plus tables, 19 figures, V2 matches version published in ApJ
Published: 2015

122. THREE-DIMENSIONAL DUST MAPPING REVEALS THAT ORION FORMS PART OF A LARGE RING OF DUST

Author: K. C. Chambers, Nick Kaiser, Nicolas F. Martin, Nigel Metcalfe, John Morgan, Edward F. Schlafly, Peter W. Draper, Christopher Waters, Paul A. Price, William S. Burgett, John L. Tonry, D. P. Finkbeiner, Hans-Walter Rix, Gregory M. Green, and Richard J. Wainscoat
Subjects: Physics, extinction, 010308 nuclear & particles physics, Star formation, Milky Way, Dust, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, clouds. [ISM], 01 natural sciences, Galaxy, bubbles [ISM], Photometry (optics), Interstellar medium, Stars, Space and Planetary Science, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 010303 astronomy & astrophysics, Stellar evolution, Astrophysics::Galaxy Astrophysics, Cosmic dust
Abstract: The Orion Molecular Complex is the nearest site of ongoing high-mass star formation, making it one of the most extensively studied molecular complexes in the Galaxy. We have developed a new technique for mapping the three-dimensional distribution of dust in the Galaxy using Pan-STARRS1 photometry. We isolate the dust at the distance to Orion using this technique, revealing a large (100 pc, 14° diameter), previously unrecognized ring of dust, which we term the ''Orion dust ring''. The ring includes Orion A and B, and is not coincident with current Hα features. The circular morphology suggests formation as an ancient bubble in the interstellar medium, though we have not been able to conclusively identify the source of the bubble. This hint at the history of Orion may have important consequences for models of high-mass star formation and triggered star formation.
Published: 2015

123. VHE65a: an extremely red reflection nebula or a typical cometary nebula

Author: S. M. Scarrott, D. P. Stockdale, and Peter W. Draper
Subjects: Physics, Nebula, Emission nebula, Space and Planetary Science, Reflection nebula, Dark nebula, Astronomy, Astronomy and Astrophysics, Bipolar nebula, Astrophysics, Planetary nebula, Protoplanetary nebula
Published: 1994

124. THE COMPLEX STRUCTURE OF STARS IN THE OUTER GALACTIC DISK AS REVEALED BY PAN-STARRS1

Author: Paul A. Price, Colin T. Slater, Richard J. Wainscoat, William S. Burgett, Edward F. Schlafly, Eugene A. Magnier, Nigel Metcalfe, Jorge Peñarrubia, Hans-Walter Rix, K. C. Chambers, Klaus W. Hodapp, Rosemary F. G. Wyse, Christopher Waters, Peter W. Draper, Eric Morganson, Nick Kaiser, Eric F. Bell, Edouard J. Bernard, John L. Tonry, Nicolas F. Martin, Annette M. N. Ferguson, and David Martínez-Delgado
Subjects: Physics, FOS: Physical sciences, Astronomy and Astrophysics, interactions [Galaxies], Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, evolution [Galaxies], Astrophysics - Astrophysics of Galaxies, Accretion (astrophysics), Stars, Space and Planetary Science, Monoceros Ring, Astrophysics of Galaxies (astro-ph.GA), Stellar structure, Astrophysics::Earth and Planetary Astrophysics, Disc, Link formation, Longitude, disk [Galaxy], structure. [Galaxy], Astrophysics::Galaxy Astrophysics
Abstract: We present a panoptic view of the stellar structure in the Galactic disk's outer reaches commonly known as the Monoceros Ring, based on data from Pan-STARRS1. These observations clearly show the large extent of the stellar overdensities on both sides of the Galactic disk, extending between b = -25 and b = +35 degrees and covering over 130 degrees in Galactic longitude. The structure exhibits a complex morphology with both stream-like features and a sharp edge to the structure in both the north and the south. We compare this map to mock observations of two published simulations aimed at explaining such structures in the outer stellar disk, one postulating an origin as a tidal stream and the other demonstrating a scenario where the disk is strongly distorted by the accretion of a satellite. These morphological comparisons of simulations can link formation scenarios to observed structures, such as demonstrating that the distorted-disk model can produce thin density features resembling tidal streams. Although neither model produces perfect agreement with the observations--the tidal stream predicts material at larger distances which is not detected while in the distorted disk model the midplane is warped to an excessive degree--future tuning of the models to accommodate these latest data may yield better agreement., 10 pages, 7 figures. Accepted to ApJ. Key figures and data can be found at http://dept.astro.lsa.umich.edu/~ctslater/MRi/
Published: 2014

125. PROPERTIES OF M31. IV. CANDIDATE LUMINOUS BLUE VARIABLES FROM PANDROMEDA

Author: H. Flewelling, P. A. Price, Morgan Fraser, A. Riffeser, C. Goessl, Stella Seitz, Ulrich Hopp, Mihael Kodric, Peter W. Draper, Jan Snigula, R. P. Kudritzki, W. S. Burgett, E. A. Magnier, Chien-Hsiu Lee, K. C. Chambers, Nick Kaiser, J. Koppenhoefer, Luciana Bianchi, and R. Bender
Subjects: Physics, Spiral galaxy, 010504 meteorology & atmospheric sciences, massive. [Stars], media_common.quotation_subject, evolution [Stars], FOS: Physical sciences, Local Group, Astronomy and Astrophysics, Astrophysics, 01 natural sciences, Galaxy, Andromeda, Young age, Stars, Astrophysics - Solar and Stellar Astrophysics, early-type [Stars], Space and Planetary Science, Sky, individual (M31) [Galaxies], 0103 physical sciences, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), 0105 earth and related environmental sciences, media_common
Abstract: We perform a study on the optical and infrared photometric properties of known luminous blue variables (LBVs) in M31 using the sample of LBV candidates from the Local Group Galaxy Survey (Massey et al. 2007). We find that M31 LBV candidates show photometric variability ranging from 0.375 to 1.576 magnitudes in rP1 during a three year time-span observed by the Pan-STARRS 1 Andromeda survey (PAndromeda). Their near-infrared colors also follow the distribution of Galactic LBVs as shown by Oksala et al. (2013). We use these features as selection criteria to search for unknown LBV candidates in M31. We thus devise a method to search for candidate LBVs using both optical color from the Local Group Galaxy Survey and infrared color from Two Micron All Sky Survey, as well as photometric variations observed by PAndromeda. We find four sources exhibiting common properties of known LBVs. These sources also exhibit UV emission as seen from GALEX, which is one of the previously adopted method to search for LBV candidates. The locations of the LBVs are well aligned withM31 spiral arms as seen in the UV light, suggesting they are evolved stars at young age given their high-mass nature. We compare these candidates with the latest Geneva evolutionary tracks, which show that our new M31 LBV candidates are massive evolved stars with an age of 10 to 100 million years., 30 pages, 13 figures, 3 tables, ApJ in press
Published: 2014

126. CHARACTERIZATION OF THE PRAESEPE STAR CLUSTER BY PHOTOMETRY AND PROPER MOTIONS WITH 2MASS, PPMXL, AND Pan-STARRS

Author: Christopher W. Stubbs, J. N. Heasley, Chien-Hsiu Lee, Robert Jedicke, Robert H. Lupton, Paul A. Price, Gerard Anthony Luppino, Tommy Grav, C. K. Huang, W. P. Chen, Richard J. Wainscoat, Peter M. Onaka, William S. Burgett, Mengchun Tsai, R. P. Kudritzki, K. C. Chambers, Klaus W. Hodapp, J. S. Morgan, John L. Tonry, C. H. Tang, Mark E. Huber, Ping Wang, Nick Kaiser, Neelam Panwar, Nigel Metcalfe, H. Flewelling, Peter W. Draper, E. A. Magnier, Bertrand Goldman, Christopher Waters, Chien-Cheng Lin, W. E. Sweeney, Ashwani Pandey, and David G. Monet
Subjects: media_common.quotation_subject, Population, FOS: Physical sciences, Binary number, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, mass function, kinematics and dynamics [Stars], Astrophysics::Solar and Stellar Astrophysics, Mass segregation, education, Solar and Stellar Astrophysics (astro-ph.SR), luminosity function [Stars], Astrophysics::Galaxy Astrophysics, media_common, Physics, education.field_of_study, Solar mass, Astronomy and Astrophysics, Stars, individual (Praesepe) [Open clusters and associations], Star cluster, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Sky, Astrophysics::Earth and Planetary Astrophysics
Abstract: Membership identification is the first step to determine the properties of a star cluster. Low-mass members in particular could be used to trace the dynamical history, such as mass segregation, stellar evaporation, or tidal stripping, of a star cluster in its Galactic environment. We identified member candidates with stellar masses $\sim$0.11--2.4 Msun of the intermediate-age Praesepe cluster (M44), by using Pan-STARRS and 2MASS photometry, and PPMXL proper motions. Within a sky area of 3 deg radius, 1040 candidates are identified, of which 96 are new inclusions. Using the same set of selection criteria on field stars led to an estimate of a false positive rate 16%, suggesting 872 of the candidates being true members. This most complete and reliable membership list allows us to favor the BT-Settl model in comparison with other stellar models. The cluster shows a distinct binary track above the main sequence, with a binary frequency of 20--40%, and a high occurrence rate of similar mass pairs. The mass function is consistent with that of the disk population but shows a deficit of members below 0.3 solar masses. A clear mass segregation is evidenced, with the lowest-mass members in our sample being evaporated from this disintegrating cluster., Comment: ApJ accepted
Published: 2014

127. THE PAN-STARRS1 MEDIUM-DEEP SURVEY: THE ROLE OF GALAXY GROUP ENVIRONMENT IN THE STAR FORMATION RATE VERSUS STELLAR MASS RELATION AND QUIESCENT FRACTION OUT TOz∼ 0.8

Author: E. A. Magnier, Chin-Wei Chen, Paul A. Price, R. J. Wainscoat, Nigel Metcalfe, Pablo Arnalte-Mur, Lihwai Lin, William S. Burgett, M. E. Huber, K. C. Chambers, Stefanie Phleps, Wen Ping Chen, Hung-Yu Jian, Peter W. Draper, Christopher M. Waters, Sebastien Heinis, Shaun Cole, Nick Kaiser, Klaus W. Hodapp, Jean Coupon, L. Denneau, Richard G. Bower, Sebastien Foucaud, Chien-Hsiu Lee, R. P. Kudritzki, Bau-Ching Hsieh, John L. Tonry, H. Flewelling, and Peder Norberg
Subjects: Quenching, Physics, education.field_of_study, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, Star formation, Large-scale structure of universe, Population, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Galaxy merger, evolution [Galaxies], Galaxy, high-redshift [Galaxies], groups: general [Galaxies], Space and Planetary Science, Primary (astronomy), Galaxy group, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, education, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: Using a large sample of field and group galaxies drawn from the Pan-STARRS1 Medium-Deep Survey, we present the specific star formation rate (SSFR) - stellar mass (M*) relation, as well as the quiescent fraction versus M* relation in different environments. We confirm that the fraction of quiescent galaxies is strongly dependent on environment at a fixed stellar mass, but that the amplitude and the slope of the star-forming sequence is similar between the field and groups: in other words, the SSFR-density relation at a fixed stellar mass is primarily driven by the change in the star-forming and quiescent fractions between different environments rather than a global suppression in the star formation rate for the star-forming population. However, when we restrict our sample to the cluster-scale environments ($M>10^{14}M_{solar}$), we find a global reduction in the SSFR of the star forming sequence of $17\%$ at 4$\sigma$ confidence as opposed to its field counterpart. After removing the stellar mass dependence of the quiescent fraction seen in field galaxies, the excess in the quiescent fraction due to the environment quenching in groups and clusters is found to increase with stellar mass. We argue that these results are in favor of galaxy mergers to be the primary environment quenching mechanism operating in galaxy groups whereas strangulation is able to reproduce the observed trend in the environment quenching efficiency and stellar mass relation seen in clusters. Our results also suggest that the relative importance between mass quenching and environment quenching depends on stellar mass -- the mass quenching plays a dominant role in producing quiescent galaxies for more massive galaxies, while less massive galaxies are quenched mostly through the environmental effect, with the transition mass around $1-2\times10^{10}M_{solar}$ in the group/cluster environment. (abridged), Comment: 19 pages, 10 figures, ApJ accepted
Published: 2014

128. Search for Heavy Particles Decaying into Electron-Positron Pairs inpp¯Collisions

Author: D. Buchholz, B. May, S. Fuess, A. V. Kostritskiy, K. Gounder, Sissel Hansen, Anna Goussiou, M. Abolins, L. Coney, N. Sen, Gregory R Snow, Vladimir Gavrilov, Gordon Watts, V. Sirotenko, A. Leflat, Anurag Gupta, O. V. Eroshin, Phillip Gutierrez, B. Knuteson, R. Van Kooten, S. Feher, A. Besson, A. Baden, M. I. Martin, G. Graham, A. Zieminski, Jasvinder A. Singh, B. M. Sabirov, K. Papageorgiou, N. K. Mondal, H. T. Diehl, H. Singh, N. Sotnikova, R. J. Genik, U. Bassler, S. Tentindo-Repond, J. McDonald, G. C. Blazey, R. Yamada, A. Boehnlein, Pushpalatha C Bhat, L. S. Vertogradov, A. N. Galyaev, D. K. Cho, V. Simak, Elizabeth Gallas, T. McMahon, D. Mihalcea, J. Ellison, A. K.A. Maciel, B. Connolly, Sa. Jain, Richard Breedon, H. L. Melanson, P. Padley, Alexey Volkov, Alberto Santoro, M. Bhattacharjee, D. A. Wijngaarden, N. Parua, V.V. Abramov, A. Abdesselam, K. Bos, R. Illingworth, W. E. Cooper, S. Duensing, Daniel R Claes, G. Eppley, Philip Baringer, S. Banerjee, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, R. A. Sidwell, Seong Keun Kim, D. Edmunds, Andre Sznajder, Yuri Gershtein, M. D. Peters, J. H. Christenson, L. Babukhadia, P. Krivkova, David H. Adams, Suyong Choi, Bobby Samir Acharya, H. A. Neal, J. T. Linnemann, V. Sorín, T. Heuring, K. Yip, Stephen Wimpenny, Matthew Jones, M. Jaffré, H. D. Wahl, Michael A. Strauss, M. A.C. Cummings, B. Hoeneisen, Stefan Grünendahl, Suman Bala Beri, P. Rubinov, A. Juste, A. R. Clark, Lee Sawyer, H. da Motta, J. G.R. Lima, Alice Bean, John Rutherfoord, M. Buehler, L. Lueking, C. Luo, Mary Beth Adams, M. Zanabria, Winston Ko, L. Stutte, Jinhong Yu, T. Marshall, Sharon Hagopian, S. Youssef, H. E. Fisk, L. J. Pan, N. R. Stanton, Arnaud Lucotte, B. Gómez, Z. Zhou, J. Solomon, F. Canelli, Volker Buescher, O. Peters, Vipin Bhatnagar, E. Popkov, A. S. Ito, A.S. Dyshkant, K. Del Signore, M. Merkin, Alexander Kupco, Andrew White, V. Zutshi, Darien Wood, R. Jesik, Shashikant Dugad, K. A. Johns, R. Partridge, K. M. Mauritz, T. Bacon, James C. Green, S. P. Denisov, Haiyan Wang, T. Yasuda, Wendy Taylor, A. Patwa, V. M. Abazov, Nicholas John Hadley, G. Di Loreto, S.A. Kahn, Randy Ruchti, Raymond Brock, Boaz Klima, E. G. Zverev, R. Gilmartin, M. Gao, R. Piegaia, Roger Moore, P. I. Goncharov, S. Blessing, M. Demarteau, F. Fleuret, Y. Kulik, V. L. Malyshev, J. Rha, H. S. Mao, Erik Ramberg, F. Stichelbaut, F. Borcherding, R. Beuselinck, Gregorio Bernardi, D. Denisov, Scott Snyder, J. Womersley, M. R. Krishnaswamy, P. M. Tuts, P.F. Ermolov, B. G. Pope, John Hobbs, C. S. Mishra, V. E. Kuznetsov, R. W. Stephens, C. Miao, B. Olivier, D. Shpakov, E. W. Anderson, S. Willis, Srinivasan Rajagopalan, Hal Evans, A. Bross, R. Snihur, Robert Hirosky, J. M. Hauptman, Cecilia Elena Gerber, J. Barreto, V. V. Babintsev, A. M. Kalinin, G. Ginther, D. Karmanov, G. Steinbrück, T. Rockwell, Iain Alexander Bertram, Meenakshi Narain, A. Para, V. Oguri, D. Bauer, T. Nunnemann, Elizaveta Shabalina, B. Baldin, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, Q. Z. Li, V. S. Burtovoi, Thomas Ferbel, Rajendran Raja, B. Pawlik, Y. Ducros, R. Demina, Sergey Chekulaev, Michael Rijssenbeek, Vasken Hagopian, Jianming Qian, H. Weerts, T. Fahland, Z. M. Wang, J. T. White, G. Gutierrez, Gilvan Alves, P. Yamin, Gustaaf Brooijmans, Lev Dudko, F. Nang, J. Warchol, G. D. Alexeev, Richard B. Lipton, D. Casey, G. Briskin, Yu-tin Huang, V. S. Narasimham, L. Groer, Thomas G Trippe, Jeffrey F. Krane, Brad Abbott, A. Kharchilava, Y. Fisyak, Pierre Petroff, J. Kotcher, D. Cutts, M. Sosebee, S. N. Gurzhiev, R. L. McCarthy, V. N. Evdokimov, Wagner Carvalho, M. Chung, E. Flattum, Sergey Kuleshov, Nikos Varelas, K. W. Merritt, S. Chopra, Sebastian Grinstein, Marvin Johnson, R. K. Shivpuri, S. J. De Jong, J. F. Bartlett, A. V. Kozelov, N. Graf, Greg Landsberg, V. Manankov, Peter W. Draper, Chris Hays, Ariel Schwartzman, J. Snow, Heriberto Castilla-Valdez, M. Paterno, K. Soustruznik, V. A. Bezzubov, J. P. Negret, R. P. Smith, Viatcheslav Stolin, P. van Gemmeren, S. Doulas, A. A. Mayorov, Victor Daniel Elvira, M. Roco, Michael Shupe, Michael Hildreth, P. A. Rapidis, M. H.G. Souza, C. Lundstedt, A. Jonckheere, E. Smith, Melissa Ridel, R. Kehoe, H. E. Montgomery, Kaushik De, M. Strovink, Z. Yu, E. Kajfasz, Daniel Whiteson, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, R. D. Schamberger, S. M. Tripathi, M. A. Kubantsev, Howard Gordon, K. C. Frame, Andrew Brandt, R. Engelmann, J. Estrada, D. P. Stoker, J. A. Wightman, N. I. Bojko, Alexander Belyaev, K. M. Chan, Dhiman Chakraborty, E. A. Kozlovsky, H.E. Miettinen, Y. A. Yatsunenko, A. V. Kotwal, Neeti Parashar, Harrison Prosper, S. Desai, R. D. Martin, D. O'Neil, M. Zielinski, Patrick Slattery, K. Davis, J. N. Butler, D. A. Stoyanova, A. S. Turcot, P. D. Grannis, H. Piekarz, Gervasio Gomez, Michael Begel, R. J. Madaras, K. Genser, D. Hedin, Ulrich Heintz, H. Jöstlein, Frank Filthaut, M. Diesburg, N. Amos, S. N. Ahmed, M. Fortner, N. W. Reay, J. Perkins, D. Fein, Don Lincoln, P. W. Balm, Daniel John Karmgard, Emanuela Barberis, C. Hebert, L. T. Goss, Charles Leggett, Jing Li, H. Haggerty, S. Krzywdzinski, A. Zylberstejn, F. Lehner, H. Greenlee, G. A. Davis, Serban Protopopescu, L. Duflot, N.V. Mokhov, Elemer Nagy, A. P. Heinson, R. E. Hall, J. L. González Solís, Z. Casilum, Shuichi Kunori, V. Vaniev, P. Demine, H. Zheng, P. Hanlet, D. Coppage, S. Negroni, and S. Reucroft
Subjects: Physics, Particle physics, Gauge boson, 010308 nuclear & particles physics, Tevatron, General Physics and Astronomy, Technicolor, Electron, Fermion, 01 natural sciences, 7. Clean energy, Omega, Nuclear physics, Positron, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, 010306 general physics
Abstract: We present results of searches for technirho (rho (T)), techniomega (omega (T)), and Z' particles, using the decay channels rho (T), omega (T), Z' --> e(+)e(-). The search is based on 124.8 pb(-1) of data collected by the DO detector at the Fermilab Tevatron during 1992-1996. In the absence of a signal, we set 95% C.L. upper limits on the cross sections for the processes p (p) over bar --> rho (T), omega (T), Z' - e(+)e(-) as a function of the mass of the decaying particle. For certain model parameters, we exclude the existence of degenerate rho (T) and omega (T) states with masses below about 200 GeV. We exclude a Z' with mass below 670 GeV, assuming that it has the same couplings to fermions as the Z boson.
Published: 2001

129. High-pTjets inp¯pcollisions ats=630and 1800 GeV

Author: H. A. Neal, V.V. Abramov, A. Leflat, Gregory R. Snow, G. Eppley, D. A. Stoyanova, Richard Breedon, M. Kubantsev, B. Pawlik, K. Yip, J. T. White, K. S. Hahn, D. Cutts, S. Protopopescu, Greg Landsberg, B. Connolly, T. L. Geld, K. Soustruznik, A. Baden, G. C. Blazey, R. Yamada, M. I. Martin, F. Stichelbaut, Zheng Wang, John Rutherfoord, S. Krzywdzinski, C. Luo, N. Sotnikova, G. Di Loreto, D. Buchholz, James C. Green, V. Simak, F. Borcherding, Matthew Jones, M. Jaffré, T. Marshall, Suman Bala Beri, Miguel Mostafa, U. Bassler, Sarah Catherine Eno, T. Nunnemann, B. Baldin, Georg Steinbrück, D. Casey, François Fleuret, F. Nang, Richard B. Lipton, P. Padley, Alexey Volkov, Arnaud Lucotte, H. da Motta, J. G.R. Lima, Andrew White, A. Gupta, S. Tentindo-Repond, J. McDonald, Gervasio Gomez, Gregorio Bernardi, D. Denisov, A. Zylberstejn, J. V.D. Wirjawan, T. Heuring, Wagner Carvalho, J. M. Hauptman, Darien Wood, Nicholas John Hadley, S. Blessing, C. Hebert, J. Kotcher, E. Kajfasz, L. Lueking, L. Stutte, A.S. Dyshkant, Emanuela Barberis, A. S. Ito, Mitchell Wayne, H. Schellman, J. M. Kohli, H. Greenlee, D. A. Wijngaarden, Srinivasan Rajagopalan, Y. Ducros, J. B. Singh, L. Groer, Anna Goussiou, A. V. Kotwal, J. A. Wightman, Thomas Ferbel, P. Demine, Scott Snyder, Elemer Nagy, K. Del Signore, A. S. Turcot, Elizabeth Gallas, L. T. Goss, Alberto Santoro, Philip Baringer, N. Parua, H. Jostlein, N. Graf, Konstantinos Papageorgiou, Raymond Brock, Boaz Klima, Charles Leggett, Randy Ruchti, A. Jonckheere, K. M. Mauritz, H. Zheng, A. P. Vorobiev, Stephan Linn, R. K. Shivpuri, S. Banerjee, P.F. Ermolov, P. Hanlet, D. R. Claes, H. G. Evans, X. C. Meng, R. J. Genik, H. Haggerty, G. A. Davis, D. Toback, D. Mihalcea, Stefan Grünendahl, J. Thompson, D.A. Bauer, S. R. Dugad, O. Peters, John Hobbs, R. Beuselinck, J. Cochran, D. Hedin, D. Coppage, V. S. Burtovoi, P. van Gemmeren, S. Doulas, P. Rubinov, M. Chung, P. M. Tuts, G. Briskin, Robert Hirosky, Marc M Baarmand, Howard Gordon, K. C. Frame, Sebastien Jonathan Kahn, N. Oshima, S. N. Gurzhiev, Sergey Kuleshov, D. Norman, H. E. Fisk, Daria Zieminska, L. J. Pan, R. Demina, Kaushik De, Vladimir Gavrilov, G. Gutierrez, Gilvan Alves, M. R. Adams, R. Jesik, H. D. Wahl, M. Zanabria, Gordon Watts, Winston Ko, Heriberto Castilla-Valdez, S. P. Denisov, B. Olivier, C. Klopfenstein, Z. Zhou, J. Solomon, L. Babukhadia, V. S. Narasimham, H. L. Melanson, P. Z. Quintas, V. Sirotenko, L. Duflot, S. Willis, S. Chopra, S. M. Tripathi, R. Astur, O. V. Eroshin, Victor Daniel Elvira, D. K. Cho, M. R. Krishnaswamy, A. R. Clark, P. C. Bhat, A. Para, S. K. Kim, A. A. Mayorov, R. J. Madaras, J. Snow, N.V. Mokhov, Phillip Gutierrez, Y. Kulik, F. Lehner, S. Reucroft, J. H. Christenson, Viatcheslav Stolin, David H. Adams, Sergey Chekulaev, Chris Hays, B. May, R. Gilmartin, M. Gao, A. P. Heinson, A. N. Galyaev, S. Youssef, S. Choi, K. M. Chan, Alice Bean, E. J. Ramberg, K. W. Merritt, J. F. Bartlett, V. Manankov, Robert Kehoe, V. Oguri, T. Yasuda, M. H.G. Souza, E. Flattum, Robert J. McCarthy, J. Womersley, T. Rockwell, Iain Alexander Bertram, Yonggang Huang, C. S. Mishra, Cecilia Elena Gerber, Robert Snihur, M. Strauss, Michael Rijssenbeek, T.R. McMahon, M. Paterno, R. D. Martin, Wendy Taylor, H. E. Montgomery, Gustaaf Brooijmans, C. Lundstedt, P. Yamin, Volker Buescher, Vipin Bhatnagar, V. V. Babintsev, G. Ginther, R. E. Hall, M. Roco, J. Warchol, J. L. González Solís, Z. Casilum, V. Zutshi, Jianming Qian, Roger Moore, Daniel Whiteson, D. Edmunds, Nikos Varelas, W. E. Cooper, S. Duensing, Vasken Hagopian, Ariel Schwartzman, E. Smith, H. Weerts, D. Karmanov, Stephen Wimpenny, S. Negroni, V. E. Kuznetsov, Andre Sznajder, T. G. Trippe, P. I. Goncharov, Melissa Ridel, M. D. Peters, D. Fein, J. Rha, E. G. Zverev, B. Knuteson, H. S. Mao, M. Fortner, N. W. Reay, Sharon Hagopian, D. Chakraborty, A. K.A. Maciel, Peter W. Draper, V. Sorin, N. I. Bojko, J. Perkins, M.K. Fatyga, Don Lincoln, P. W. Balm, Ulrich Heintz, Jing Li, V. N. Evdokimov, Shuichi Kunori, K. Gounder, Daniel John Karmgard, K. A. Johns, Jong-Sung Yu, M. A. Shupe, M. A.C. Cummings, R. Piegaia, J. S. Hoftun, K. Davis, J. N. Butler, B. Hoeneisen, Lee Sawyer, A. D. Bross, L. Oesch, J. T. Linnemann, P. D. Grannis, V. Vaniev, H. Piekarz, C. Miao, Haiyan Wang, R. D. Schamberger, B. S. Acharya, V. A. Bezzubov, J. P. Negret, R. P. Smith, M. Diesburg, Neeti Parashar, Harrison Prosper, M. Zielinski, M. Demarteau, Alexander Belyaev, T. Fahland, Patrick Slattery, M. Sosebee, M. Abolins, Dennis Shpakov, R. Engelmann, E. A. Kozlovsky, H.E. Miettinen, E. Popkov, A. Brandt, A. Patwa, N. K. Mondal, Z. Yu, Meenakshi Narain, H. T. Diehl, H. Singh, J. Krane, A. Boehnlein, J. Ellison, S. Fuess, A. Abdesselam, R. Partridge, Y. Gershtein, M. Merkin, M. Strovink, M. Bhattacharjee, T. C. Bacon, R. W. Stephens, D. P. Stoker, F. Canelli, Y. Fisyak, A. V. Kozelov, S. R. Hou, B. Gómez, M. Buehler, A. V. Kostritskiy, Sissel Hansen, L. Coney, N. Sen, Juan Estrada, E. W. Anderson, Q. Z. Li, A. Juste, Sebastian Grinstein, B. G. Pope, Elizaveta Shabalina, N. R. Stanton, R. Illingworth, Lev Dudko, S. A. Jerger, N. Amos, K. Genser, Rajendran Raja, Brad Abbott, Pierre Petroff, R. Van Kooten, S. Feher, A. Besson, G. Graham, A. Zieminski, P. A. Rapidis, Michael Begel, R. A. Sidwell, S. Desai, and Mikkel B. Johnson
Subjects: Physics, Quantum chromodynamics, Quark, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Tevatron, Order (ring theory), Jet (particle physics), 01 natural sciences, law.invention, law, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Fermilab, Nuclear Experiment, 010306 general physics, Collider
Abstract: Results are presented from analyses of jet data produced in $p\overline{p}$ collisions at $\sqrt{s}=630$ and 1800 GeV collected with the D\O{} detector during the 1994--1995 Fermilab Tevatron Collider run. We discuss the details of detector calibration, and jet selection criteria in measurements of various jet production cross sections at $\sqrt{s}=630$ and 1800 GeV. The inclusive jet cross sections, the dijet mass spectrum, the dijet angular distributions, and the ratio of inclusive jet cross sections at $\sqrt{s}=630$ and 1800 GeV are compared to next-to-leading-order QCD predictions. The order ${\ensuremath{\alpha}}_{\mathrm{s}}^{3}$ calculations are in good agreement with the data. We also use the data at $\sqrt{s}=1800$ GeV to rule out models of quark compositeness with a contact interaction scale less than $2.2$ TeV at the $95%$ confidence level.
Published: 2001

130. Search for dilepton signatures from minimal low-energy supergravity inpp¯collisions ats=1.8TeV

Author: D. Edmunds, Suman Bala Beri, Andre Sznajder, Yuri Gershtein, M. D. Peters, L. Oesch, L. Babukhadia, A. Juste, D. Mihalcea, B. Connolly, Richard Breedon, D. A. Wijngaarden, E. Popkov, E. G. Zverev, Meenakshi Narain, M. Chung, B. Baldin, D. Shpakov, M. Sosebee, T. Heuring, Y. Ducros, P. Demine, H. Zheng, A. N. Galyaev, J. Bantly, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, H. Motta, X. C. Meng, P. Hanlet, D. Coppage, V. Sorín, K. Yip, Y. Fisyak, Sergey Kuleshov, D. K. Cho, P. A. Rapidis, Elemer Nagy, L. Stutte, Jinhong Yu, A.S. Dyshkant, F. Borcherding, Andrew Brandt, R. Engelmann, R. L. McCarthy, Victor Daniel Elvira, Marvin Johnson, A. Jonckheere, A. P. Vorobiev, Neeti Parashar, U. Bassler, W. E. Cooper, S. Duensing, T. Fahland, Stephan Linn, E. A. Kozlovsky, H.E. Miettinen, S. Youssef, A. V. Kozelov, M. Zielinski, N. Oshima, Daria Zieminska, K. M. Mauritz, B. Olivier, S. Reucroft, R. D. Schamberger, Robert Kehoe, Heriberto Castilla-Valdez, Y. Kulik, Suyong Choi, Miguel Mostafa, P.F. Ermolov, M. Roco, V. Zutshi, G. Eppley, E. Flattum, M. A. Kubantsev, M. M. Baarmand, Sarah Catherine Eno, G. Loreto, J. Womersley, B. May, M. Buehler, Robert Hirosky, J. G.R. Lima, S. Chopra, V. S. Burtovoi, N. R. Stanton, E. J. Ramberg, A. S. Ito, D. P. Stoker, F. Nang, D. Karmanov, Ariel Schwartzman, J. A. Wightman, B. Gibbard, E. Smith, Alberto Santoro, R. Demina, Wendy Taylor, S. Negroni, Richard B. Lipton, A. Patwa, K. Streets, Vipin Bhatnagar, P. Yamin, A. Baden, Brajesh C Choudhary, G. Gutierrez, Seong Keun Kim, D. Toback, Gilvan Alves, G. C. Blazey, R. Jesik, N. I. Bojko, R. D. Martin, R. Partridge, M. Merkin, S. Mani, Yu-tin Huang, D. Denisov, J. Sculli, A. A. Mayorov, Anurag Gupta, R. Yamada, F. Stichelbaut, P. Rubinov, J. M. Hauptman, Cecilia Elena Gerber, Shuichi Kunori, V. Vaniev, R. J. Madaras, R. Snihur, M. Strovink, Srinivasan Rajagopalan, Hal Evans, V. S. Narasimham, Andrew White, P. Gartung, Nikos Varelas, Jasvinder A. Singh, D. Buchholz, Peter W. Draper, Pushpalatha C Bhat, K. Gounder, V. V. Babintsev, G. Ginther, J. Rha, Thomas Ferbel, John Rutherfoord, Raymond Brock, Boaz Klima, R. K. Shivpuri, S. A. Jerger, Jianming Qian, D. Hedin, H. S. Mao, D. R. Claes, Mary Beth Adams, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, A. Leflat, D. Norman, Anna Goussiou, P. van Gemmeren, J. Snow, S. Doulas, B. Knuteson, M. I. Martin, John Hobbs, S. Willis, G. Briskin, S. N. Gurzhiev, L. Lueking, Haiyan Wang, James C. Green, S. Tentindo-Repond, K. S. Hahn, Kaushik De, S.A. Kahn, T. Rockwell, Iain Alexander Bertram, Jeffrey F. Krane, J. McDonald, M. Demarteau, Gregory R Snow, C. Klopfenstein, D. Cutts, Michael Rijssenbeek, Wagner Carvalho, Greg Landsberg, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, H. L. Melanson, P. Z. Quintas, Philip Baringer, K. Del Signore, S. Banerjee, Viatcheslav Stolin, M. Paterno, K. Soustruznik, V. N. Evdokimov, B. G. Pope, M. H.G. Souza, J. H. Christenson, C. Lundstedt, David H. Adams, Chris Hays, V. A. Bezzubov, J. P. Negret, R. P. Smith, H. E. Montgomery, H. E. Fisk, L. J. Pan, K. M. Chan, Dhiman Chakraborty, Alice Bean, Elizaveta Shabalina, F. Canelli, Michael Shupe, Z. Yu, P. M. Tuts, V. E. Kuznetsov, Z. Zhou, J. Solomon, R. W. Stephens, M. Bhattacharjee, Stephen Wimpenny, J. Estrada, N. Sotnikova, R. J. Genik, T. G. Trippe, J. T. White, B. Pawlik, A. V. Kotwal, Harrison Prosper, S. Desai, Sharon Hagopian, A. V. Kostritskiy, T. Marshall, R. Gilmartin, D. Casey, H. D. Wahl, Sissel Hansen, J. Kotcher, M. Zanabria, Winston Ko, Darien Wood, O. I. Dahl, R. Piegaia, L. Coney, N. Sen, N. Graf, Nicholas John Hadley, S. Blessing, T. Yasuda, Scott Snyder, V. Buescher, E. W. Anderson, Q. Z. Li, Allen Mincer, J. V.D. Wirjawan, Sebastian Grinstein, E. Kajfasz, V. Simak, V. Oguri, P. Padley, Alexey Volkov, James H Cochran, Gustaaf Brooijmans, M. L. Stevenson, J. Warchol, Mitchell Wayne, H. Schellman, J. M. Kohli, Elizabeth Gallas, T. McMahon, Stefan Grünendahl, J. Thompson, S. R. Hou, B. Gómez, K. A. Johns, Z. H. Zhu, Shashikant Dugad, R. Van Kooten, S. Feher, A. Besson, G. Graham, A. Zieminski, R. A. Sidwell, G. Steinbrück, Rajendran Raja, Brad Abbott, C. S. Mishra, Vasken Hagopian, H. Weerts, Z. M. Wang, Lev Dudko, S. Fuess, Vladimir Gavrilov, Gordon Watts, V. Sirotenko, P. I. Goncharov, O. V. Eroshin, Phillip Gutierrez, C. Miao, M. Abolins, D. A. Stoyanova, A. S. Turcot, Gervasio Gomez, N. K. Mondal, V.V. Abramov, H. T. Diehl, H. Singh, Michael Begel, D. Whiteson, A. Boehnlein, Matthew Jones, K. Genser, J. Ellison, A. K.A. Maciel, Arnaud Lucotte, Ulrich Heintz, H. Jöstlein, N. Parua, Randy Ruchti, M. Diesburg, Alexander Belyaev, Patrick Slattery, S. Krzywdzinski, A. Zylberstejn, F. Lehner, H. Greenlee, A. Bross, O. Peters, G. A. Davis, Serban Protopopescu, N.V. Mokhov, A. P. Heinson, R. E. Hall, J. L. González Solís, Z. Casilum, D. Fein, Don Lincoln, P. W. Balm, Daniel John Karmgard, C. Hebert, Jing Li, N. Amos, G. Bernardi, Emanuela Barberis, L. T. Goss, H. Haggerty, M. Fortner, N. W. Reay, J. Perkins, K. W. Merritt, J. F. Bartlett, V. Manankov, F. Fleuret, Howard Gordon, K. C. Frame, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, A. R. Clark, A. Para, Sergey Chekulaev, and Michael A. Strauss
Subjects: Physics, Nuclear and High Energy Physics, Gluino, Particle physics, 010308 nuclear & particles physics, Supergravity, High Energy Physics::Phenomenology, Supersymmetry, Coupling (probability), 01 natural sciences, Chargino, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, 010306 general physics, Energy (signal processing), Lepton
Abstract: We report on a search for supersymmetry using the D\O{} detector. The 1994--1996 data sample of $\sqrt{s}=1.8$ TeV $p\overline{p}$ collisions was analyzed for events containing two leptons $(e$ or $\ensuremath{\mu}),$ two or more jets, and missing transverse energy. Assuming the minimal supergravity model, with ${A}_{0}=0$ and $\ensuremath{\mu}l0,$ various thresholds were employed to optimize the search. No events were found beyond expectation from the background. We set a lower limit at the 95% C.L. of 255 $\mathrm{GeV}{/c}^{2}$ for equal mass squarks and gluinos for $\mathrm{tan}\ensuremath{\beta}=2,$ and present exclusion contours in the ${(m}_{0}{,m}_{1/2})$ plane for $\mathrm{tan}\ensuremath{\beta}=2$--6.
Published: 2001

131. Measurement of the angular distribution of electrons fromW→eνdecays observed inpp¯collisions ats=1.8TeV

Author: S. N. Gurzhiev, J. Womersley, G. Eppley, J. G.R. Lima, M. Abolins, D. Karmanov, A. S. Ito, Viatcheslav Stolin, E. G. Zverev, C. Lundstedt, F. Stichelbaut, J. A. Wightman, T. Fahland, N. K. Mondal, L. Lueking, G. Loreto, H. T. Diehl, H. Singh, A. Jonckheere, Suyong Choi, J. Krane, Neeti Parashar, A. V. Kostritskiy, B. May, A. P. Vorobiev, Stephan Linn, M. Zielinski, N. I. Bojko, D. Whiteson, A. Boehnlein, R. D. Martin, Gregorio Bernardi, D. Denisov, T. G. Trippe, K. Del Signore, Srinivasan Rajagopalan, M. Sosebee, Hal Evans, Thomas Ferbel, N. Oshima, J. Ellison, Raymond Brock, Boaz Klima, H. A. Neal, A. K.A. Maciel, Sissel Hansen, H. E. Fisk, S. Fuess, H. C. Shankar, V. Sorín, Daria Zieminska, Sharon Hagopian, T. Rockwell, Iain Alexander Bertram, K. Yip, C. Klopfenstein, L. J. Pan, Michael Rijssenbeek, L. Stutte, Jinhong Yu, E. Flattum, F. Borcherding, J. Bantly, H. Motta, L. Coney, M. A. Kubantsev, A.S. Dyshkant, D. Norman, P. M. Tuts, N. Sen, V. E. Kuznetsov, R. W. Stephens, E. J. Ramberg, Anurag Gupta, S. Willis, S. Chopra, R. D. Schamberger, R. L. McCarthy, A. A. Mayorov, V. N. Evdokimov, Z. Zhou, J. Solomon, S. A. Jerger, J. T. Linnemann, R. Piegaia, M. Strovink, G. Steinbrück, Shuichi Kunori, A. Leflat, Robert Hirosky, K. A. Johns, Andrew Brandt, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, R. Engelmann, K. Streets, Vipin Bhatnagar, P. Yamin, D. Mihalcea, Richard Breedon, M. I. Martin, Ariel Schwartzman, R. Snihur, V. Buescher, M. Chung, H. Piekarz, R. Demina, V. Vaniev, A. N. Galyaev, M. Roco, G. Gutierrez, Gilvan Alves, R. Partridge, R. Gilmartin, E. Smith, S. Tentindo-Repond, E. W. Anderson, D. Shpakov, J. Rha, T. Heuring, H. S. Mao, M. Bhattacharjee, V. S. Narasimham, L. Groer, J. McDonald, Q. Z. Li, P. Demine, Allen Mincer, E. A. Kozlovsky, Miguel Mostafa, M. M. Baarmand, H. Zheng, Sarah Catherine Eno, P. Hanlet, D. K. Cho, W. E. Cooper, S. Duensing, B. Baldin, J. Snow, U. Bassler, M. Merkin, D. Coppage, Sebastian Grinstein, Andrew White, D. Hedin, H.E. Miettinen, Y. Ducros, V. Simak, J. B. Singh, Philip Baringer, P. Padley, Alexey Volkov, F. Nang, Peter W. Draper, B. Pawlik, Chris Hays, Richard B. Lipton, Heriberto Castilla-Valdez, Elizabeth Gallas, T. McMahon, H. Jostlein, James H Cochran, Mitchell Wayne, V. A. Bezzubov, J. P. Negret, R. P. Smith, D. Casey, H. Schellman, J. M. Kohli, S. Banerjee, S. Negroni, N. Sotnikova, R. J. Genik, J. Kotcher, Y. Fisyak, Michael Shupe, K. M. Chan, Dhiman Chakraborty, Wendy Taylor, N. Amos, A. Patwa, X. C. Meng, K. S. Hahn, O. I. Dahl, Alberto Santoro, Stefan Grünendahl, J. Thompson, D. A. Wijngaarden, S. R. Hou, John Hobbs, Marvin Johnson, D. Cutts, Roger Moore, Y. Kulik, S. Reucroft, Pushpalatha C Bhat, B. Gómez, Z. H. Zhu, H. Haggerty, D. Toback, J. Estrada, K. Gounder, A. V. Kozelov, Sergey Kuleshov, N. Graf, Wagner Carvalho, M. R. Adams, Greg Landsberg, Victor Daniel Elvira, A. V. Kotwal, Harrison Prosper, M. Buehler, P. Rubinov, P. I. Goncharov, S. Desai, P. Gartung, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, H. L. Melanson, P. Z. Quintas, L. Babukhadia, B. Connolly, J. M. Hauptman, Cecilia Elena Gerber, S. Youssef, N. R. Stanton, M. Fortner, S. K. Kim, J. H. Christenson, B. S. Acharya, M. Paterno, K. Soustruznik, C. Miao, B. Olivier, D. P. Stoker, N. W. Reay, Robert Kehoe, V. V. Babintsev, G. Ginther, V. Zutshi, J. Perkins, David H. Adams, B. Knuteson, Alice Bean, Haiyan Wang, S.A. Kahn, A. Baden, G. C. Blazey, Jianming Qian, M. Demarteau, R. Yamada, R. Jesik, H. D. Wahl, M. Zanabria, Winston Ko, Emanuela Barberis, F. Canelli, John Rutherfoord, L. T. Goss, D. Edmunds, James C. Green, T. Yasuda, G. Briskin, B. G. Pope, Andre Sznajder, Yuri Gershtein, Elizaveta Shabalina, M. D. Peters, L. Oesch, J. T. White, Michael A. Strauss, Suman Bala Beri, A. Juste, Vladimir Gavrilov, Gordon Watts, M. H.G. Souza, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, V.V. Abramov, Matthew Jones, Arnaud Lucotte, H. E. Montgomery, N. Parua, Randy Ruchti, C. S. Mishra, Vasken Hagopian, H. Weerts, Z. M. Wang, Lev Dudko, Z. Yu, D. Buchholz, J. V.D. Wirjawan, Anna Goussiou, Gregory R Snow, E. Kajfasz, K. M. Mauritz, P.F. Ermolov, V. Oguri, E. Popkov, Meenakshi Narain, V. S. Burtovoi, Gustaaf Brooijmans, M. L. Stevenson, J. Warchol, Stephen Wimpenny, R. J. Madaras, T. Marshall, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, S. Krzywdzinski, R. K. Shivpuri, D. R. Claes, Alexander Belyaev, P. van Gemmeren, Patrick Slattery, D. A. Stoyanova, A. S. Turcot, Gervasio Gomez, Michael Begel, S. Doulas, A. Zylberstejn, Ulrich Heintz, F. Lehner, H. Greenlee, M. Diesburg, Kaushik De, A. Bross, O. Peters, G. A. Davis, Serban Protopopescu, S. M. Tripathi, B. Gibbard, N.V. Mokhov, Elemer Nagy, Yu-tin Huang, J. Sculli, Nikos Varelas, A. P. Heinson, R. E. Hall, J. L. González Solís, Z. Casilum, D. Fein, Don Lincoln, P. W. Balm, Daniel John Karmgard, C. Hebert, F. Fleuret, S. R. Dugad, Jing Li, Howard Gordon, K. C. Frame, K. W. Merritt, J. F. Bartlett, V. Manankov, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, A. R. Clark, A. Para, Sergey Chekulaev, R. Van Kooten, S. Feher, A. Besson, G. Graham, A. Zieminski, P. A. Rapidis, R. A. Sidwell, K. Genser, Rajendran Raja, and Brad Abbott
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Tevatron, Perturbative QCD, Electron, 01 natural sciences, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, Polar coordinate system, 010306 general physics, Parametrization
Abstract: We present the first measurement of the electron angular distribution parameter α 2 in W→eν events produced in proton-antiproton collisions as a function of the W boson transverse momentum. Our analysis is based on data collected using the DO detector during the 1994–1995 Fermilab Tevatron run. We compare our results with next-to-leading order perturbative QCD, which predicts an angular distribution of (1±α 1 cosθ ∗ +α 2 cos 2 θ ∗ ), where θ ∗ is the polar angle of the electron in the Collins-Soper frame. In the presence of QCD corrections, the parameters α 1 and α 2 become functions of p T W , the W boson transverse momentum. This measurement provides a test of next-to-leading order QCD corrections which are a non-negligible contribution to the W boson mass measurement.
Published: 2001

132. Search for electroweak production of single top quarks inpp¯collisions

Author: V.V. Abramov, H. S. Mao, K. M. Mauritz, B. Hoeneisen, M. Diesburg, S. Grünendahl, M. Bhattacharjee, V. Gavrilov, Emanuela Barberis, M. Peters, G. Eppley, P.F. Ermolov, B. May, A. Boehnlein, T. G. Trippe, P. M. Tuts, N. Mokhov, Arnaud Lucotte, S. K. Kim, A. N. Galyaev, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, K. Yip, M. M. Baarmand, V. S. Burtovoi, Sarah Catherine Eno, K. W. Merritt, Anurag Gupta, R. Van Kooten, M. Sosebee, D. K. Cho, J. Snow, C. Klopfenstein, H. da Motta, J. G.R. Lima, S. Fuess, Sharon Hagopian, W. E. Cooper, A. Schwartzman, M. Chung, V. Manankov, S. Duensing, A.S. Dyshkant, N. Parua, Randy Ruchti, Daniel R Claes, G. Steinbrück, Jasvinder A. Singh, Stephen Wimpenny, D. Lincoln, J. Bantly, R. Piegaia, E. Gallas, F. Nang, M. Zanabria, Ron Lipton, L. Sawyer, J. Womersley, A. Zieminski, K. Genser, D. Karmanov, J. M. Hauptman, Cecilia Elena Gerber, S. Negroni, T. McMahon, B. Connolly, V. V. Babintsev, G. Ginther, Darien Wood, Neeti Parashar, Richard Breedon, H. Greenlee, R. Yamada, F. Stichelbaut, D. Fein, V. D. Elvira, O. V. Eroshin, M. Zielinski, J. H. Christenson, Shuichi Kunori, H. E. Fisk, D. Hedin, S. Chopra, R. J. Madaras, Nicholas John Hadley, S. Blessing, Jianming Qian, Alexander Belyaev, K. S. Hahn, V. Buescher, Andrew Brandt, Scott Snyder, R. Engelmann, V. Vaniev, C. S. Mishra, R. Snihur, P. W. Balm, G. Briskin, Jeffrey F. Krane, J. T. White, Daniel John Karmgard, S. N. Gurzhiev, D. A. Wijngaarden, D. Cutts, Wagner Carvalho, Greg Landsberg, A. Zylberstejn, M. Demarteau, T. Heuring, N. Sotnikova, V. Simak, M. Fortner, N. W. Reay, J. Perkins, Patrick Slattery, D. A. Stoyanova, A. S. Turcot, M. Roco, Y. Fisyak, E. Nagy, M. Jones, R. J. Genik, Wendy Taylor, E. A. Kozlovsky, H.E. Miettinen, E. Popkov, C. Hebert, A. Patwa, T. Fahland, Marvin Johnson, S. Doulas, Roger Moore, Gervasio Gomez, E. E. Boos, A. Jonckheere, L. J. Pan, A. V. Kozelov, S. Hansen, E. W. Anderson, P. C. Bhat, D. Shpakov, E. Ramberg, P. Demine, E. G. Zverev, C. Lundstedt, Heriberto Castilla-Valdez, Z. Zhou, J. Solomon, Brad Abbott, G. Watts, K. Del Signore, B. Baldin, P. Gartung, M. H.G. Souza, K. Soustruznik, L. Stutte, V. Oguri, Vasken Hagopian, D. Edmunds, Qiming Li, Michael Begel, M. Paterno, Suyong Choi, T. Rockwell, Iain Alexander Bertram, Kaushik De, P. van Gemmeren, H. Weerts, Z. M. Wang, Michael Rijssenbeek, D. Mihalcea, A. Besson, Lev Dudko, S. Kuleshov, B. Olivier, Andrew White, M. Strovink, A. V. Kotwal, Andre Sznajder, Yuri Gershtein, E. Flattum, R. Gilmartin, S. Krzywdzinski, H. Zheng, P. Hanlet, H. L. Melanson, D. Coppage, F. Borcherding, D. Denisov, D. Casey, J. Kotcher, O. I. Dahl, G. Di Loreto, N. Graf, X. C. Meng, J. P. Negret, S. M. Tripathi, K. M. Chan, Allen Mincer, V. E. Kuznetsov, Jing Li, Y. Kulik, T. Yasuda, A. Baden, R. W. Stephens, G. C. Blazey, T. Marshall, M. L. Stevenson, S. Feher, Meenakshi Narain, G. Graham, Dhiman Chakraborty, K. Streets, U. Bassler, V. N. Evdokimov, Vipin Bhatnagar, A. S. Ito, Gregorio Bernardi, Srinivasan Rajagopalan, L. Oesch, R. L. McCarthy, L. Babukhadia, Robert Hirosky, Thomas Ferbel, D. Stoker, J. Warchol, A. Para, M. Mostafa, N. Amos, R. Partridge, V. A. Bezzubov, R. Demina, H. Evans, C. Hays, H. Jöstlein, R. P. Smith, Alberto Santoro, Z. Yu, H. Haggerty, H. D. Wahl, S. Reucroft, J. F. Bartlett, D. Toback, Gilvan Alves, R. A. Sidwell, John Hobbs, Michael Shupe, Winston Ko, R. E. Hall, B. Gibbard, V. S. Narasimham, J. Estrada, P. A. Rapidis, Suman Bala Beri, O. Peters, John Rutherfoord, P. Padley, M. Strauss, J. Rha, Harrison Prosper, S. Desai, Alexey Volkov, Yu-tin Huang, J. Sculli, A. A. Mayorov, Mary Beth Adams, D. Buchholz, E. Smith, G. A. Davis, Serban Protopopescu, James C. Green, Nikos Varelas, M. I. Martin, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, David H. Adams, Alice Bean, F. Canelli, J. V. D. Wirjawan, Anna Goussiou, Ulrich Heintz, K. A. Johns, J. Thompson, A. P. Heinson, Gregory R Snow, S. R. Hou, Z. H. Zhu, J. L. González Solís, Shashikant Dugad, B. Gómez, Z. Casilum, A. V. Kostritskiy, L. Coney, N. Sen, R. K. Shivpuri, A. Juste, Y. Ducros, K. Gounder, M. A.C. Cummings, B. G. Pope, J. A. Wightman, N. I. Bojko, R. D. Martin, S. Grinstein, B. Knuteson, Haiyan Wang, S.A. Kahn, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, B. Pawlik, D. Norman, Elizaveta Shabalina, S. Youssef, A. P. Vorobiev, R. Raja, Stephan Linn, N. Oshima, L. Groer, Robert Kehoe, R. D. Schamberger, M. A. Kubantsev, V. Zutshi, L. T. Goss, R. Jesik, D. Zieminska, P. Yamin, G. Gutierrez, Peter W. Draper, M. Buehler, J. Yu, N. R. Stanton, V. Stolin, P. Z. Quintas, L. Lueking, V. Sorín, E. Kajfasz, S. A. Jerger, A. Leflat, P. I. Goncharov, H. E. Montgomery, C. Miao, S. Tentindo-Repond, J. McDonald, Philip Baringer, F. Lehner, M. Abolins, S. Banerjee, V. Sirotenko, N. K. Mondal, H. T. Diehl, H. Singh, D. Whiteson, J. Ellison, A. K.A. Maciel, P. Gutierrez, M. Merkin, A. Bross, Raymond Brock, Boaz Klima, P. Rubinov, S. Willis, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, A. R. Clark, Sergey Chekulaev, G. Brooijmans, F. Fleuret, Howard Gordon, and K. C. Frame
Subjects: Quark, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Electroweak interaction, Tevatron, Electron, Jet (particle physics), 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, 010306 general physics, Collider
Abstract: We present a search for electroweak production of single top quarks in the electron+jets and muon+jets decay channels. The measurements use ≈90pb -1 of data from Run 1 of the Fermilab Tevatron collider, collected at 1.8 TeV with the DO detector between 1992 and 1995. We use events that include a tagging muon, implying the presence of a b jet, to set an upper limit at the 95% confidence level on the cross section for the s-channel process pp→tb+X of 39 pb. The upper limit for the t-channel process pp→tqb+X is 58 pb.
Published: 2000

133. Limits on anomalousWWγandWWZcouplings fromWW/WZ→eνjjproduction

Author: G. Eppley, T. Huehn, C. Cretsinger, S. A. Jerger, M. Strovink, E. James, H. da Motta, J. G.R. Lima, D. Fein, A. Leflat, W. G. Cobau, M. I. Martin, Don Lincoln, A. S. Ito, A. Baden, S. Youssef, S. Choi, L. Magaña-Mendoza, Erich Varnes, G. C. Blazey, Daniel John Karmgard, J. S. Kang, R. Yamada, M. Merkin, A. Sanchez-Hernandez, Robert Kehoe, J. McDonald, S. H. Ahn, Raymond Brock, P. Hanlet, G. Finocchiaro, F. Landry, John Rutherfoord, Mary Beth Adams, D. P. Stoker, Boaz Klima, D. Norman, S. Banerjee, V. Balamurali, R. Snihur, A. Jonckheere, Joan A. Guida, Stephan Linn, K. Streets, Vipin Bhatnagar, S. Willis, Jing Li, N. Oshima, Daria Zieminska, S. Reucroft, R. D. Schamberger, G. Di Loreto, C. Klopfenstein, R. Partridge, Y. Fisyak, F. Borcherding, S. M. Chang, Marvin Johnson, T. McKibben, Eunil Won, T. L. Thomas, A. N. Galyaev, N.V. Mokhov, G. E. Forden, A. P. Heinson, A. V. Kozelov, D. Denisov, G. Wang, Alberto Santoro, Seong Keun Kim, Alexander Vorobiev, V. A. Bezzubov, J. P. Negret, R. P. Smith, C. K. Jung, M. M. Baarmand, R. Jesik, Sarah Catherine Eno, Srinivasan Rajagopalan, R. L. McCarthy, Thomas Ferbel, Dan Green, Pushpalatha C Bhat, H. S. Mao, D. L. Adams, G. Kalbfleisch, J. M. Hauptman, Cecilia Elena Gerber, Michael Shupe, K. Gounder, W. E. Cooper, B. Gibbard, F. Nang, L. P. Chen, Daniel R Claes, B. G. Pope, R. E. Hall, J. L. González Solís, B. Baldin, Z. Casilum, Y. Ducros, C. Murphy, B. Lauer, M. A.C. Cummings, R. Astur, B. Hoeneisen, Lee Sawyer, T. Heuring, K. S. Hahn, D. Cutts, Elizaveta Shabalina, Jianming Qian, M. Chung, Greg Landsberg, J. T. White, Elizabeth Gallas, M. H.G. Souza, T. L. Geld, A. V. Kotwal, Harrison Prosper, Peter Nemethy, B. Pawlik, M. Roco, E. W. Anderson, P. Yepes, S. Krzywdzinski, Tong Hu, Y. M. Park, M. Paterno, Y. Gershtein, S.A. Kahn, H. E. Montgomery, Dhiman Chakraborty, M. Demarteau, Sergey Kuleshov, A. L. Lyon, Shuichi Kunori, A. Zylberstejn, D. Casey, J. Kotcher, Victor Daniel Elvira, F. Lobkowicz, T. Joffe-Minor, H. Greenlee, P. Bloom, J. A. Wightman, M. Abolins, R. Hernández-Montoya, S. Glenn, O. I. Dahl, A. Bross, H. E. Fisk, Bobby Samir Acharya, N. Sotnikova, M. Bhattacharjee, H. A. Neal, H. C. Shankar, J. T. Linnemann, T. Rockwell, Iain Alexander Bertram, Allen Mincer, P. Mooney, J. McKinley, N. Graf, D. Stewart, Wagner Carvalho, N. I. Bojko, Michael Rijssenbeek, Sebastian Grinstein, S. N. Gurzhiev, Serban Protopopescu, P. Yamin, Z. Zhou, J. Solomon, T. G. Trippe, Jinhong Yu, N. K. Mondal, H. T. Diehl, H. Singh, J. Krane, Heriberto Castilla-Valdez, D. Buchholz, S. Mani, P. Padley, Alexey Volkov, Sharon Hagopian, V. N. Evdokimov, W. Smart, K. A. Johns, A. Boehnlein, Edilamar Menezes de Oliveira, Viatcheslav Stolin, L. Babukhadia, D.S. Koltick, J. Ellison, A. K.A. Maciel, H. L. Melanson, P. Z. Quintas, B. May, R. Madden, L. Rasmussen, E. Oltman, Peter W. Draper, P. Tamburello, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, J. Jaques, James H Cochran, Heng Xu, H. Piekarz, Mitchell Wayne, P. Gartung, H. Schellman, J. M. Kohli, Ron Lipton, C. Yoshikawa, D. Vititoe, Anna Goussiou, J. H. Christenson, A. L. Spadafora, R. J. Genik, Michael A. Strauss, J. Womersley, B. Gobbi, P. I. Goncharov, Stefan Grünendahl, J. Thompson, Anurag Gupta, B. Gómez, Z. H. Zhu, R. Piegaia, D. Karmanov, J. V.D. Wirjawan, Jasvinder A. Singh, J. M. Guida, D. Hedin, Shashikant Dugad, C. Boswell, Gregory R Snow, Brajesh C Choudhary, T. Yasuda, K. M. Mauritz, P.F. Ermolov, A. V. Kostritskiy, H. D. Wahl, Suman Bala Beri, Sissel Hansen, F. Stichelbaut, V. Oguri, V. S. Burtovoi, L. Coney, M. L. Stevenson, J. Snow, J. Warchol, R. J. Madaras, D. Edmunds, Andre Sznajder, M. D. Peters, L. Oesch, Emanuela Barberis, J. Z.Y. Jiang, S. Fuess, L. T. Goss, Vladimir Gavrilov, Gordon Watts, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, N. Parua, Rajendran Raja, H. Haggerty, S. Lökös, Brad Abbott, Q. Z. Li-Demarteau, J. Yang, M. L. Kelly, Randy Ruchti, Howard Gordon, C. S. Mishra, M. Fortner, K. C. Frame, G. Guglielmo, O. Ramirez, J. Perkins, Vasken Hagopian, H. Weerts, T. Fahland, K. Del Signore, Lev Dudko, E. Flattum, S. P. Denisov, P. Grudberg, C. L. Kim, Hiroaki Aihara, M. R. Krishnaswamy, E. Smith, P. M. Tuts, S. C. Loken, R. W. Stephens, F. Hsieh, Robert Hirosky, A. R. Clark, A. Para, W. Y. Chen, G. Gutierrez, Gilvan Alves, Sergey Chekulaev, V. S. Narasimham, Andrew White, A. A. Mayorov, T. McMahon, M. K. Fatyga, G. Steinbrück, I. Adam, P. Rubinov, N. Amos, K. W. Merritt, J. Kourlas, J. F. Bartlett, John Hobbs, S. Feher, V. Manankov, Ting Hu, Young-Sang Yu, Yanwen Liu, L. Lueking, A. Zieminski, S. Y. Jun, R. K. Shivpuri, J. Balderston, M. Tartaglia, Alexander Belyaev, Kaushik De, J. Sculli, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, Nikos Varelas, M. Diesburg, M. Sosebee, D. Owen, Stephen Wimpenny, J. Tarazi, D. A. Stoyanova, J. Bantly, T. Marshall, Gervasio Gomez, C. Shaffer, Darien Wood, Nicholas John Hadley, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, S. Blessing, Scott Snyder, Andrew Brandt, R. Engelmann, S. Chopra, R. Markeloff, E. A. Kozlovsky, H.E. Miettinen, M. D. Jones, E. G. Zverev, Haifeng Li, Meenakshi Narain, and A. Narayanan
Subjects: Condensed Matter::Quantum Gases, Physics, Gauge boson, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Tevatron, Elementary particle, Fermion, Lambda, 01 natural sciences, Nuclear physics, Particle decay, Pair production, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, 010306 general physics, Boson, Lepton
Abstract: Limits on anomalous $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ couplings are presented from a study of $WW/W\stackrel{\ensuremath{\rightarrow}}{Z}e\ensuremath{\nu}\mathrm{jj}$ events produced in $p\overline{p}$ collisions at $\sqrt{s}=1.8 \mathrm{TeV}.$ Results from the analysis of data collected using the D\O{} detector during the 1993--1995 Tevatron collider run at Fermilab are combined with those of an earlier study from the 1992--1993 run. A fit to the transverse momentum spectrum of the W boson yields direct limits on anomalous $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ couplings. With the assumption that the $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ couplings are equal, we obtain $\ensuremath{-}0.34l\ensuremath{\lambda}l0.36$ (with $\ensuremath{\Delta}\ensuremath{\kappa}=0)$ and $\ensuremath{-}0.43l\ensuremath{\Delta}\ensuremath{\kappa}l0.59$ (with $\ensuremath{\lambda}=0)$ at the 95% confidence level for a form-factor scale $\ensuremath{\Lambda}=2.0 \mathrm{TeV}.$
Published: 2000

134. Extraction of the width of theWboson from measurements ofσ(pp¯→W+X)×B(W→eν)andσ(pp¯→Z+X)×B(Z→ee)and their ratio

Author: L. Magaña-Mendoza, S. Fuess, D. Buchholz, M. Merkin, A. Baden, Vladimir Gavrilov, G. C. Blazey, P. Tamburello, S. Chopra, Gordon Watts, A. Lucotte, R. Yamada, V. Sirotenko, Raymond Brock, Boaz Klima, S. H. Ahn, Gregory R Snow, O. V. Eroshin, F. Landry, N. R. Stanton, A. V. Kostritskiy, Mary Beth Adams, S. Willis, P. Bloom, J. A. Wightman, D. A. Stoyanova, N. I. Bojko, R. D. Martin, M. Sosebee, Stephen Wimpenny, Andrew White, C. S. Mishra, W. Chen, Emanuela Barberis, V. D. Elvira, R. Snihur, Chris Hays, Sissel Hansen, J. D. Hobbs, James C. Green, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. Bantly, T. Marshall, B. May, J. S. Hoftun, K. Davis, J. N. Butler, N. Parua, J. T. Linnemann, H. Piekarz, N. Parashar, Gervasio Gomez, G. Eppley, A. N. Galyaev, K. Yip, Vasken Hagopian, H. Weerts, K. S. Hahn, S. Youssef, L. Coney, S. Choi, K. M. Mauritz, D. Cutts, Y. Kulik, A. Sanchez-Hernandez, H. da Motta, Robert Kehoe, A. Sznajder, V. Zutshi, J. G.R. Lima, Shuichi Kunori, Lev Dudko, B. Baldin, B. Pawlik, Nicholas John Hadley, Jinhong Yu, V. A. Bezzubov, E. Smith, P.F. Ermolov, B. Gobbi, N.V. Mokhov, S. Feher, Greg Landsberg, Anurag Gupta, Sergey Kuleshov, V. Vaniev, A.S. Dyshkant, J. P. Negret, A. S. Ito, D. Chakraborty, M. Bhattacharjee, V.V. Abramov, R. P. Smith, V. Oguri, J. M. Hauptman, Cecilia Elena Gerber, A. Zieminski, W. E. Cooper, Daniel R Claes, S. Blessing, Scott Snyder, C. Boswell, T. L. Geld, M. Paterno, V. S. Burtovoi, P. I. Goncharov, Young-Sang Yu, C. Shaffer, D. Cullen-Vidal, A. Zylberstejn, K. Genser, G. Steinbrück, Andrew Brandt, H. Haggerty, E. A. Kozlovsky, H.E. Miettinen, S. Reucroft, J. Womersley, R. Markeloff, M. L. Stevenson, J. V.D. Wirjawan, S. N. Gurzhiev, Jasvinder A. Singh, V. V. Babintsev, H. D. Wahl, E. W. Varnes, F. Borcherding, Michael Shupe, G. E. Forden, A. P. Heinson, T. Fahland, S. Y. Jun, T. L.T. Thomas, Jianming Qian, D. Koltick, M. Tartaglia, D. Karmanov, R. E. Hall, D. Coppage, J. Warchol, C. Miao, F. Stichelbaut, Randy Ruchti, Winston Ko, R. J. Madaras, L. Lueking, R. A. Sidwell, Kaushik De, Brajesh C Choudhary, P. Padley, R. D. Schamberger, Alexey Volkov, M. M. Baarmand, E. G. Zverev, J. L. González Solís, G. Briskin, C. Murphy, E. Flattum, G. A. Alves, Miguel Mostafa, T. Heuring, A. Santoro, James H Cochran, J. Snow, Elizabeth Gallas, Mitchell Wayne, H. Schellman, J. M. Kohli, Jeffrey F. Krane, Sarah Catherine Eno, M. Kubantsev, Tong Hu, C. K. Jung, Rajendran Raja, M. Fortner, P. Nemethy, D. Fein, M. Chung, Suman Bala Beri, J. Rutherfoord, M. Abolins, W. Carvalho, Brad Abbott, A. Mincer, T. G. Trippe, T. Yasuda, J. Perkins, F. Nang, Richard B. Lipton, Stefan Grünendahl, P. Hanlet, T. McMahon, Z. Casilum, Viatcheslav Stolin, P. Yepes, Don Lincoln, Sharon Hagopian, K. Del Signore, Meenakshi Narain, Matthew Jones, H. E. Montgomery, Daniel John Karmgard, A. V. Kotwal, Harrison Prosper, J. Thompson, C. Hebert, B. Gómez, Y. M. Park, L. Babukhadia, P. Gartung, B. Gibbard, N. K. Mondal, H. T. Diehl, Alexander Belyaev, A. Narayanan, G. Guglielmo, Heriberto Castilla-Valdez, M. Roco, H. Singh, D. Edmunds, Z. H. Zhu, L. T. Goss, R. McCarthy, J. Sculli, P. Gutierrez, Shashikant Dugad, M. Strauss, M. Peters, R. Piegaia, D. Norman, Nikos Varelas, Jing Li, A. Boehnlein, M. H.G. Souza, Joan A. Guida, P. M. Tuts, Yuri Gershtein, S. Krzywdzinski, R. W. Stephens, P. D. Grannis, C. Klopfenstein, G. Di Loreto, D. Shpakov, N. Amos, Robert Hirosky, H. L. Melanson, P. Z. Quintas, L. Oesch, N. W. Reay, H. Greenlee, J. T. White, D. Denisov, J. Ellison, A. K.A. Maciel, Seong Keun Kim, A. Bross, E. W. Anderson, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, G. Gutierrez, Richard Breedon, Y. Pischalnikov, D. Toback, Serban Protopopescu, Dan Green, Q. Z. Li, T. Joffe-Minor, V. S. Narasimham, J. McKinley, R. Hernández-Montoya, Ulrich Heintz, H. E. Fisk, H. Jöstlein, Sebastian Grinstein, N. Sotnikova, A. A. Mayorov, Z. Zhou, J. Solomon, M. Diesburg, M. K. Fatyga, R. Engelmann, J. H. Christenson, R. J. Genik, D. Owen, R. K. Shivpuri, M. Zielinski, J. Tarazi, K. Johns, J. M. Guida, D. Hedin, T. Rockwell, Iain Alexander Bertram, D. R. Wood, D. Casey, V. N. Evdokimov, J. Kotcher, O. I. Dahl, N. Graf, K. Streets, Vipin Bhatnagar, T. McKibben, R. Partridge, R. Jesik, H. S. Mao, D. L. Adams, P. Yamin, B. G. Pope, S. Mani, D. P. Stoker, R. Madden, A. Goussiou, Peter W. Draper, C. Yoshikawa, Pushpalatha C Bhat, K. Gounder, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, B. Knuteson, Elizaveta Shabalina, S.A. Kahn, M. Demarteau, A. Jonckheere, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, Y. Fisyak, J. McDonald, Marvin Johnson, Philip Baringer, S. Banerjee, A. V. Kozelov, C. Cretsinger, M. Strovink, Y. Ducros, I. Adam, P. Rubinov, K. W. Merritt, J. F. Bartlett, V. Manankov, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, M. Rijssenbeek, F. Hsieh, A. R. Clark, A. Para, Sergey Chekulaev, Howard Gordon, V. Akimov, K. C. Frame, and O. Ramirez
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Pair production, W and Z bosons, Transverse momentum, Analytical chemistry, Width ratio
Abstract: We report on measurements on inclusive cross sections times branching fractions into electrons for W and Z bosons produced in p (p) over bar collisions at root s = 1.8 TeV. From an integrated luminosity of 84.5 pb(-1) recorded in 1994-1995 using the D empty set detector at the Fermilab Tevatron, we determine sigma(p (p) over bar--> W + X) x B(W-->e nu) = 2310 +/- 10(stat) +/- 50(syst) +/- 100(lum)pb and sigma(p (p) over bar-->Z + X) x B(Z-->ee)=221+/-3(stat)+/-4(syst)+/-10(lum)pb. From these, we derive sigma(p (p) over bar-->W + X) x B(N-->e nu)/sigma(p (p) over bar-->Z + X) x B(Z-->ee) = 10.43+/-0.15(stat) +/- 0.20(syst) +/- 0.10(NLO), B(W-->e nu) = 0.1044+/-0.0015(stat)+/-0.0020(syst)+/-0.0017(theory)+/-0.0010(NLO). and Gamma(w) = 2169 +/- 0.03 l(stat) +/- 0.042(syst) +/- 0.041(theory)+/- 0.022(NLO)GeV. We use the latter to set a 95% confidence level upper limit on the partial decay width of the W boson into nonstandard model final states, Gamma(W)(inv), of 0.213 GeV. Combining these results with those from the 1992-1993 data gives sigma(p (p) over bar-->W+X) x B(W-->e nu)/sigma(p (p) over bar-->Z+X) x B(Z-->ee) = 10.51+/-0.25, Gamma(W) = 2.152 +/- 0.066 GeV, and a 95% C.L. upper limit an Gamma(W)(inv) of 0.191 GeV. Using a sample with a luminosity of 505 nb(-1) taken at root s = 630 GeV, we measure sigma(p (p) over bar--> W+ X) x B(W --> e nu) = 658 +/- 67 pb.
Published: 2000

135. Measurement ofWandZboson production cross sections inpp¯collisions ats=1.8TeV

Author: S. Youssef, S. Choi, A. Sanchez-Hernandez, Robert Kehoe, P. Bloom, J. A. Wightman, N. I. Bojko, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, J. M. Hauptman, Cecilia Elena Gerber, Eunil Won, V. V. Babintsev, L. Lueking, D. Buchholz, B. Baldin, C. S. Mishra, T. Fahland, Y. Ducros, J. B. Singh, Sergey Kuleshov, Victor Daniel Elvira, T. G. Trippe, Edilamar Menezes de Oliveira, Jianming Qian, G. Eppley, I. Adam, P. Rubinov, K. Del Signore, G. Guglielmo, P. Tamburello, Anna Goussiou, Pushpalatha C Bhat, Sharon Hagopian, K. Gounder, Vasken Hagopian, H. da Motta, J. G.R. Lima, E. Flattum, H. D. Wahl, Winston Ko, H. Weerts, Tong Hu, Y. Fisyak, B. Lauer, M. A.C. Cummings, A. K.A. Maciel, E. Oltman, B. Hoeneisen, Lee Sawyer, E. Smith, P. M. Tuts, Lev Dudko, A. S. Ito, B. Gibbard, Y. Gershtein, K. W. Merritt, Gregory R Snow, J. F. Bartlett, R. W. Stephens, Marvin Johnson, Joan A. Guida, V. Manankov, A. V. Kozelov, R. Piegaia, Y. M. Park, J. Sculli, S.A. Kahn, Robert Hirosky, Alexander Belyaev, V. Sirolenko, Meenakshi Narain, R. Snihur, T. Joffe-Minor, F. Lobkowicz, F. Stichelbaut, M. Demarteau, Heriberto Castilla-Valdez, G. Di Loreto, V. Oguri, M. Merkin, C. Klopfenstein, M. H.G. Souza, S. Krzywdzinski, Andrew White, H. E. Fisk, Z. Wu, M. L. Stevenson, P. Yepes, A. L. Lyon, Shuichi Kunori, W. Y. Chen, G. Gutierrez, D. Cults, K. A. Johns, D. Denisov, C. Cretsinger, Vladimir Gavrilov, A. Narayanan, H. E. Montgomery, Z. Zhou, J. Solomon, M. Strovink, J. Warchol, A. Zylberstejn, Gordon Watts, V. Vaniev, A. Jonckheere, Gilvan Alves, George R. Kalbfleisch, A. P. Vorobiev, Stephan Linn, H. Greenlee, M. Sosebee, Srinivasan Rajagopalan, Thomas Ferbel, Nikos Varelas, T. Rockwell, Iain Alexander Bertram, D. Shpakov, N. Oshima, A. Bross, O. V. Eroshin, Phillip Gutierrez, Daria Zieminska, V. S. Narasimham, Michael Rijssenbeek, John Hobbs, Dhiman Chakraborty, J. Bantly, M. R. Adams, P. Hanlet, J. V.D. Wirjawan, S. R. Dugad, D. Fein, Young-Sang Yu, K. M. Mauritz, Stephen Wimpenny, N. Parua, V.V. Abramov, M. Bhattacharjee, Y. Pischalnikov, Ulrich Heintz, R. L. McCarthy, K. Genser, P.F. Ermolov, Don Lincoln, Erich Varnes, P. I. Goncharov, Matthew Jones, Daniel John Karmgard, P. Z. Quinlas, Howard Gordon, P. Yamin, Andrew Brandt, R. Engelmann, A. A. Mayorov, V. S. Burtovoi, K. C. Frame, O. Ramirez, Elizabeth Gallas, T. McMahon, H. Jostlein, E. A. Kozlovsky, H.E. Miettinen, Arnaud Lucotte, S. Mani, Rajendran Raja, M. Diesburg, S. Reucroft, M. K. Fatyga, G. Steinbrück, J. Snow, C. Yoshikawa, Peter Nemethy, M. Roco, S. P. Denisov, P. Grudberg, C. Miao, D. Owen, G. Wang, Alberto Santoro, A. Sznaider, R. Madden, Jing Li, M. R. Krishnaswamy, Peter W. Draper, Neeti Parashar, H. Haggerty, Randy Ruchti, T. Marshall, R. J. Madaras, R. Hernández-Montoya, F. Hsieh, N.V. Mokhov, A. R. Clark, J. Tarazi, A. Para, Y. H. Zhou, M. Zielinski, L. Babukhadia, G. E. Forden, A. P. Heinson, B. Zhang, Sergey Chekulaev, D. A. Stoyanova, N. Sotnikova, Brad Abbott, J. Krane, R. E. Hall, J. L. González Solís, Gervasio Gomez, Z. Casilum, M. Abolins, S. N. Gurzhiev, D. P. Stoker, P. Gartung, C. Shaffer, D. Cullen-Vidal, N. N. Biswas, S. Chopra, P. Mooney, Darien Wood, B. S. Acharya, Viatcheslav Stolin, V. N. Evdokimov, N. K. Mondal, H. T. Diehl, H. Singh, Nicholas John Hadley, D.S. Koltick, A. Boehnlein, S. Blessing, J. Ellison, S. Fuess, Scott Snyder, J. T. Linnemann, R. Markeloff, R. K. Shivpuri, D. R. Claes, V. A. Bezzubov, J. P. Negret, M. Tartaglia, S. Feher, R. P. Smith, Kaushik De, A. Zieminski, Michael Shupe, S. Y. Jun, T. L.T. Thomas, A. V. Kotwal, Harrison Prosper, J. M. Guida, D. Hedin, M. Fortner, J. Perkins, Emanuela Barberis, L. T. Goss, R. D. Schamberger, S. C. Loken, P. Padley, Alexey Volkov, James H Cochran, N. Amos, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, B. Gómez, L. Magaña-Mendoza, Z. H. Zhu, A. V. Kostritskiy, Sissel Hansen, C. Murphy, L. Coney, T. Heuring, E. W. Anderson, Q. Z. Li, Raymond Brock, Boaz Klima, Allen Mincer, D. Norman, Sebastian Grinstein, Y. Kulik, S. Willis, H. A. Neal, H. C. Shankar, B. May, A. N. Galyaev, K. Yip, B. Gobbi, Anurag Gupta, Jinhong Yu, T. Yasuda, A.S. Dyshkant, W. E. Cooper, M. Chung, J. Jaques, J. Womersley, D. Karmanov, E. G. Zverev, Brajesh C Choudhary, K. S. Hahn, Greg Landsberg, Richard Breedon, T. L. Geld, M. Paterno, A. Baden, G. C. Blazey, R. Yamada, S. H. Ahn, F. Landry, John Rutherfoord, J. McKinley, Wagner Carvalho, F. Borcherding, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, F. Nang, Richard B. Lipton, R. J. Genik, D. Edmunds, M. D. Peters, L. Oesch, Michael A. Strauss, S. A. Jerger, C. Boswell, A. Leflat, Suman Bala Beri, W. G. Cobau, M. I. Martin, J. McDonald, Philip Baringer, S. Banerjee, B. G. Pope, Elizaveta Shabalina, J. T. White, C. K. Jung, T. McKibben, R. Jesik, D. Green, H. L. Melanson, S. Prolopopescu, S. K. Kim, J. H. Christenson, K. Streets, Vipin Bhatnagar, R. Partridge, H. S. Mao, D. L. Adams, B. Pawlik, D. Casey, J. Kotcher, O. I. Dahl, and N. Graf
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, W and Z bosons, Boson
Abstract: D\O{} has measured the inclusive production cross section of W and Z bosons in a sample of 13 ${\mathrm{pb}}^{\ensuremath{-}1}$ of data collected at the Fermilab Tevatron. The cross sections, multiplied by their leptonic branching fractions, for production in $p\overline{p}$ collisions at $\sqrt{s}=1.8$ TeV are ${\ensuremath{\sigma}}_{W}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{W}e\ensuremath{\nu})=2.36\ifmmode\pm\else\textpm\fi{}0.02\ifmmode\pm\else\textpm\fi{}0.08\ifmmode\pm\else\textpm\fi{}0.13\mathrm{}\mathrm{nb},$ ${\ensuremath{\sigma}}_{W}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{W}\ensuremath{\mu}\ensuremath{\nu})=2.09\ifmmode\pm\else\textpm\fi{}0.06\ifmmode\pm\else\textpm\fi{}0.22\ifmmode\pm\else\textpm\fi{}0.11\mathrm{}\mathrm{nb},$ ${\ensuremath{\sigma}}_{Z}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{Z}{e}^{+}{e}^{\ensuremath{-}})=0.218\ifmmode\pm\else\textpm\fi{}0.008\ifmmode\pm\else\textpm\fi{}0.008\ifmmode\pm\else\textpm\fi{}0.012\mathrm{}\mathrm{nb}$, and ${\ensuremath{\sigma}}_{Z}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{Z}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}})=0.178\ifmmode\pm\else\textpm\fi{}0.022\ifmmode\pm\else\textpm\fi{}0.021\ifmmode\pm\else\textpm\fi{}0.009\mathrm{}\mathrm{nb}$, where the first uncertainty is statistical and the second systematic; the third reflects the uncertainty in the integrated luminosity. For the combined electron and muon analyses, we find ${\ensuremath{\sigma}}_{W}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{W}l\ensuremath{\nu})/{\ensuremath{\sigma}}_{Z}\mathrm{B}(\stackrel{\ensuremath{\rightarrow}}{Z}{l}^{+}{l}^{\ensuremath{-}})=10.90\ifmmode\pm\else\textpm\fi{}0.52$. Assuming standard model couplings, we use this result to determine the width of the W boson, and obtain $\ensuremath{\Gamma}(W)=2.044\ifmmode\pm\else\textpm\fi{}0.097 \mathrm{GeV}$.
Published: 1999

136. Search for charged Higgs bosons in decays of top quark pairs

Author: T. McKibben, J. Yu, V. A. Bezzubov, J. P. Negret, K. Streets, Vipin Bhatnagar, R. P. Smith, Michael Shupe, D. Buchholz, R. Jesik, Sun Kee Kim, Y. Pischalnikov, R. Snihur, P. Tamburello, A. V. Kotwal, Harrison Prosper, L. T. Goss, H. S. Mao, D. L. Adams, A. Jonckheere, Z. Wu, S. Chopra, Gordon Watts, E. W. Anderson, G. Wang, Alberto Santoro, J. G.R. Lima, V. Sirotenko, G. Kalbfleisch, D. Coppage, O. V. Eroshin, Q. Z. Li, Emanuela Barberis, Y. Fisyak, D. Shpakov, Gregory R Snow, M. Chung, Andre Sznajder, Yuri Gershtein, Phillip Gutierrez, Allen Mincer, S. A. Jerger, M. D. Peters, A. V. Kozelov, M. L. Stevenson, Sebastian Grinstein, Alexander Belyaev, H. E. Fisk, J. M. Guida, D. Hedin, B. Gibbard, L. Oesch, J. T. White, W. G. Cobau, M. I. Martin, Robert Hirosky, K. M. Mauritz, Marvin Johnson, M. H.G. Souza, D. Fein, M. Fortner, Steve Reucroft, T. Joffe-Minor, T. Fahland, J. McDonald, F. Lobkowicz, G. Eppley, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, L. Magaña-Mendoza, Michael A. Strauss, Dhiman Chakraborty, Y. Ducros, H. Haggerty, P. Padley, Alexey Volkov, J. Warchol, A. Boehnlein, V. S. Burtovoi, P. Ermolov, H. da Motta, D. Zieminska, H. L. Melanson, P. Z. Quintas, J. Sculli, M. Diesburg, W. Y. Chen, D. Edmunds, Ricardo Piegaia, M. Merkin, Don Lincoln, Erich Varnes, S. Fuess, Philip Baringer, Daniel John Karmgard, Z. Zhou, J. Solomon, James H Cochran, J. Jaques, Mitchell Wayne, H. Schellman, J. M. Kohli, V. S. Narasimham, C. Boswell, W. E. Cooper, J. Snow, C. Hebert, S. Grünendahl, N. Parua, V.V. Abramov, M. Bhattacharjee, G. Gutierrez, V. N. Evdokimov, Gervasio Gomez, C. Yoshikawa, Pm Tuts, J. Thompson, Nikos Varelas, Ron Lipton, J. H. Christenson, Suman Bala Beri, T. G. Trippe, A. A. Mayorov, B. Gómez, Raymond Brock, Z. H. Zhu, Boaz Klima, F. Stichelbaut, J. Womersley, M. K. Fatyga, B. G. Pope, J. Linnemann, J. M. Hauptman, Cecilia Elena Gerber, Sharon Hagopian, C. Shaffer, Shashikant Dugad, V. V. Babintsev, J. Perkins, D. Denisov, D. Cullen-Vidal, K. Genser, N. N. Biswas, S. Willis, Jianming Qian, L. Lueking, Mark Raymond Adams, D. Karmanov, Elizabeth Gallas, A. Bross, Richard Breedon, N.V. Mokhov, H. Greenlee, R. L. McCarthy, R. D. Schamberger, A. N. Galyaev, Stephen Wimpenny, G. Briskin, A. V. Kostritskiy, G. E. Forden, A. P. Heinson, B. Zhang, K. Del Signore, Matthew Jones, Sissel Hansen, Brajesh C Choudhary, E. Flattum, R. Yamada, Tong Hu, Arnaud Lucotte, J. McKinley, Y. M. Park, Peter Nemethy, M. Roco, L. Coney, Li Jingyuan, J. D. Hobbs, A. L. Lyon, Shuichi Kunori, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, Ulrich Heintz, V. Vaniev, Daniel R Claes, H. Jöstlein, Rajendran Raja, R. E. Hall, K. Yip, D. P. Stoker, D. A. Stoyanova, R. J. Genik, J. L. González Solís, R. W. Stephens, A.S. Dyshkant, G. Steinbrück, D. Owen, T. Marshall, J. Tarazi, Z. Casilum, B. Pawlik, P. Yepes, Brad Abbott, N. Amos, R. J. Madaras, Randy Ruchti, S. Krzywdzinski, C. Cretsinger, Alexander Leflat, M. Strovink, H. E. Montgomery, D. Casey, Andrew White, J. Kotcher, Gilvan Alves, Darien Wood, Sergey Denisov, Pushpalatha C Bhat, Nicholas John Hadley, C. S. Mishra, O. I. Dahl, S. Feher, R. Partridge, Young-Sang Yu, N. Graf, K. Gounder, S. Blessing, A. Zieminski, B. Lauer, Vasken Hagopian, M. A.C. Cummings, E. Smith, E. Shabalina, Scott Snyder, R. Markeloff, R. K. Shivpuri, B. Hoeneisen, S. Y. Jun, T. L.T. Thomas, Lev Dudko, M. Tartaglia, Kaushik De, A. S. Ito, S.A. Kahn, C. Murphy, J. V. D. Wirjawan, V. Oguri, T. Heuring, M. Demarteau, A. P. Vorobiev, Stephan Linn, Y. Kulik, N. Oshima, B. May, H. Weerts, B. Gobbi, Anurag Gupta, Jasvinder A. Singh, P. Hanlet, D. Koltick, P. Yamin, S. Mani, R. Madden, Peter W. Draper, C. K. Jung, V. Stolin, Kenneth Johns, P. I. Goncharov, C. Miao, N. K. Mondal, M. Abolins, P. Mooney, H. T. Diehl, H. Singh, J. Ellison, A. K.A. Maciel, Heriberto Castilla-Valdez, David Cutts, T. Yasuda, S. N. Gurzhiev, P. Gartung, B. Baldin, Suyong Choi, D. Norman, Joan A. Guida, G. Di Loreto, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, Sergey Kuleshov, S. Protopopescu, H. D. Wahl, Winston Ko, Victor Daniel Elvira, L. Sawyer, P. Bloom, J. A. Wightman, N. Parashar, N. I. Bojko, M. Zielinski, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, S. Youssef, G. Guglielmo, A. Sanchez-Hernandez, C. Klopfenstein, Robert Kehoe, Eunil Won, V. Gavrilov, L. Babukhadia, R. Hernández-Montoya, N. Sotnikova, J. Krane, E. G. Zverev, J. F. Bartlett, A. Goussiou, I. Adam, P. Rubinov, Meenakshi Narain, K. W. Merritt, A. Narayanan, V. Manankov, A. Baden, G. C. Blazey, J. Bantly, S. H. Ahn, F. Landry, John Rutherfoord, Andrew Brandt, Howard Gordon, R. Engelmann, K. C. Frame, O. Ramirez, M. Sosebee, A. Zylberstejn, E. A. Kozlovsky, H.E. Miettinen, P. Grudberg, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, Sergey Chekulaev, T. McMahon, K. S. Hahn, Wagner Carvalho, Greg Landsberg, Sw. Banerjee, T. L. Geld, M. Paterno, F. Borcherding, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, and F. Nang
Subjects: Physics, Quark, Particle physics, Top quark, Branching fraction, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Particle decay, Higgs boson, Production (computer science), High Energy Physics::Experiment, Boson
Abstract: We present a search for charged Higgs bosons in decays of pair-produced top quarks using 109.2 +- 5.8 pb^-1 of data recorded from ppbar collisions at sqrt{s} = 1.8 TeV by the D0 detector during 1992-96 at the Fermilab Tevatron. No evidence is found for charged Higgs production, and most parts of the [m(H+),tan(beta)] parameter space where the decay t -> bH+ has a branching fraction close to or larger than that for t -> bW+ are excluded at 95% confidence level. Assuming m(t) = 175 GeV and sigma(ppbar -> ttbar) = 5.5 pb, for m(H+) = 60 GeV, we exclude tan(beta) < 0.97 and tan(beta) > 40.9., 11 pages, 3 figures, submitted to PRL
Published: 1999

137. Measurement of the top quark pair production cross section inpp¯collisions using multijet final states

Author: G. Eppley, H. da Motta, J. G.R. Lima, A. S. Ito, R. L. McCarthy, T. Fahland, T. McMahon, Peter Nemethy, M. Roco, E. Flattum, E. Smith, C. S. Mishra, G. Guglielmo, Heriberto Castilla-Valdez, Andrew White, Vasken Hagopian, H. Weerts, B. G. Pope, A. V. Kostritskiy, Sissel Hansen, L. Coney, Lev Dudko, N. Parua, V.V. Abramov, M. Fortner, Elizaveta Shabalina, John Hobbs, Young-Sang Yu, J. Perkins, Matthew Jones, J. T. White, Arnaud Lucotte, J. M. Hauptman, Cecilia Elena Gerber, E. W. Anderson, Emanuela Barberis, T. McKibben, V. V. Babintsev, L. T. Goss, Q. Z. Li, Randy Ruchti, S. Fuess, Jianming Qian, J. Jaques, Richard Breedon, Allen Mincer, F. Borcherding, Z. Wu, R. Jesik, Sebastian Grinstein, Vladimir Gavrilov, Tong Hu, Ron Lipton, P. I. Goncharov, P. Padley, J. Womersley, Gordon Watts, V. Sirotenko, M. Sosebee, J. McKinley, Alexey Volkov, O. V. Eroshin, H. Haggerty, C. Miao, S. Youssef, S. Choi, Wagner Carvalho, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, Phillip Gutierrez, Miguel Mostafa, M. M. Baarmand, S. C. Loken, A. Sanchez-Hernandez, Sarah Catherine Eno, Stefan Grünendahl, Robert Kehoe, D. Karmanov, J. Thompson, B. Gómez, J. Bantly, S. A. Jerger, A. Leflat, D. Vititoe, Z. H. Zhu, F. Nang, W. G. Cobau, M. I. Martin, N.V. Mokhov, A. L. Lyon, Shuichi Kunori, Brajesh C Choudhary, R. J. Genik, Shashikant Dugad, K. S. Hahn, Eunil Won, V. Vaniev, D. Cutts, C. K. Jung, Andrew Brandt, N. Amos, D. Edmunds, Greg Landsberg, B. Baldin, G. Wang, Alberto Santoro, Y. H. Zhou, J. McDonald, G. E. Forden, A. P. Heinson, B. Zhang, R. Engelmann, T. L. Geld, Seong Keun Kim, M. Chung, Andre Sznajder, Y. Ducros, E. A. Kozlovsky, H.E. Miettinen, M. Bhattacharjee, Philip Baringer, R. Hernández-Monloya, T. G. Trippe, T. Joffe-Minor, M. D. Peters, D. Shpakov, A. Baden, Pushpalatha C Bhat, G. C. Blazey, S. Banerjee, R. Yamada, M. Paterno, L. Oesch, H. E. Fisk, K. Gounder, S. H. Ahn, R. E. Hall, E. G. Zverev, J. L. González Solís, Y. Gershtein, Z. Casilum, Michael A. Strauss, B. Lauer, Z. Zhou, J. Solomon, P. Hanlet, Sergey Kuleshov, Victor Daniel Elvira, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, F. Landry, John Rutherfoord, G. Finocchiaro, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, C. Boswell, Sharon Hagopian, Mary Beth Adams, B. Pawlik, J. T. Linnemann, K. Yip, P. Bloom, M. Abolins, J. A. Wightman, Meenakshi Narain, N. I. Bojko, S. Krzywdzinski, A. K.A. Maciel, P. Mooney, Y. M. Park, E. Oltman, D. Casey, Suman Bala Beri, S.A. Kahn, Jinhong Yu, J. Kotcher, A.S. Dyshkant, M. Demarteau, A. Narayanan, N. K. Mondal, H. T. Diehl, H. Singh, S. Reucroft, O. I. Dahl, A. Boehnlein, C. Yoshikawa, J. Ellison, A. Zylberstejn, N. Graf, K. Streets, Vipin Bhatnagar, B. May, H. Greenlee, R. Partridge, L. Magaña-Mendoza, P. Yamin, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, A. Bross, M. Merkin, S. Mani, Serban Protopopescu, H. S. Mao, D. L. Adams, R. Piegaia, R. Madden, D. Fein, Don Lincoln, Erich Varnes, Daniel John Karmgard, Peter W. Draper, Y. Pischalnikov, Ulrich Heintz, Raymond Brock, Boaz Klima, K. M. Mauritz, R. Snihur, H. Jöstlein, M. Diesburg, Jing Li, A. Jonckheere, P.F. Ermolov, D. Norman, D. Owen, H. D. Wahl, A. P. Vorobiev, Stephan Linn, H. L. Melanson, P. Z. Quintas, B. Gobbi, Winston Ko, J. Tarazi, S. Willis, N. Oshima, S. M. Chang, Daria Zieminska, J. H. Christenson, R. D. Schamberger, Anurag Gupta, A. N. Galyaev, Alexander Belyaev, V. S. Burtovoi, C. Klopfenstein, W. E. Cooper, Jasvinder A. Singh, Daniel R Claes, D. A. Stoyanova, Gervasio Gomez, T. Yasuda, C. Shaffer, D. Cullen-Vidal, K. Genser, N. Sotnikova, J. Krane, N. N. Biswas, C. Murphy, S. Chopra, P. Gartung, T. Heuring, R. J. Madaras, Y. Kulik, D. Buchholz, Edilamar Menezes de Oliveira, P. Tamburello, Anna Goussiou, Gregory R Snow, Dhiman Chakraborty, M. H.G. Souza, P. Yepes, H. E. Montgomery, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, V. N. Evdokimov, D.S. Koltick, J. M. Guida, D. Hedin, V. A. Bezzubov, J. P. Negret, R. P. Smith, Michael Shupe, A. V. Kotwal, Harrison Prosper, M. Zielinski, Joan A. Guida, G. Di Loreto, L. Lueking, J. H. Moromisato, K. Del Signore, D. Denisov, Hiroaki Aihara, Srinivasan Rajagopalan, P. M. Tuts, R. W. Stephens, Robert Hirosky, Thomas Ferbel, Dan Green, W. Y. Chen, G. Gutierrez, Gilvan Alves, George R. Kalbfleisch, V. S. Narasimham, A. A. Mayorov, M. K. Fatyga, G. Steinbrück, J. Snow, S. N. Gurzhiev, Viatcheslav Stolin, F. Stichelbaut, V. Oguri, M. L. Stevenson, J. Warchol, J. V.D. Wirjawan, Elizabeth Gallas, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, I. Adam, P. Rubinov, K. W. Merritt, J. F. Bartlett, V. Manankov, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, Sergey Chekulaev, K. A. Johns, L. Babukhadia, R. K. Shivpuri, M. Tartaglia, Kaushik De, B. Gibbard, J. Sculli, Nikos Varelas, Stephen Wimpenny, T. Marshall, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, Y. Fisyak, Marvin Johnson, A. V. Kozelov, C. Cretsinger, M. Strovink, D. P. Stoker, Rajendran Raja, Brad Abbott, S. Feher, A. Zieminski, S. Y. Jun, and T. L.T. Thomas
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Cross section (physics), Top quark, Pair production, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries)
Abstract: This if the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.60.012001.
Published: 1999

138. Determination of the mass of theWboson using the D∅ detector at the Fermilab Tevatron

Author: C. S. Mishra, G. Guglielmo, P. Gartung, Vasken Hagopian, M.K. Fatyga, W. Y. Chen, Gilvan Alves, H. Weerts, C. Murphy, R. K. Shivpuri, George R. Kalbfleisch, Lev Dudko, R. Astur, V. S. Narasimham, M. Tartaglia, T. Heuring, K. M. Mauritz, S. Lami, D. Casey, P.F. Ermolov, A. A. Mayorov, N.V. Mokhov, Kaushik De, M. K. Fatyga, G. E. Forden, A. P. Heinson, S. P. Denisov, P. Grudberg, V. S. Burtovoi, M. R. Krishnaswamy, Rajendran Raja, J. Snow, C. Klopfenstein, S. Youssef, S. Choi, C. Cretsinger, N. Parua, R. E. Hall, A. Sanchez-Hernandez, Robert Kehoe, B. Baldin, J. Balderston, Y. Ducros, F. Hsieh, Victor Daniel Elvira, T. Fahland, A. Jonckheere, A. R. Clark, S. Grünendahl, A. Para, M. Strovink, Stephan Linn, E. James, J. L. González Solís, Z. Casilum, Matthew Jones, Brad Abbott, R. L. Lander, D. Lincoln, Eunil Won, M. Bhattacharjee, E. Flattum, R. Snihur, J. M. Guida, D. Hedin, R. J. Madaras, P. Bloom, J. A. Wightman, S. Krzywdzinski, N. Oshima, Sergey Chekulaev, Daria Zieminska, R. Hirosky, N. I. Bojko, D. Buchholz, N. Varelas, R. D. Schamberger, V. I. Kochetkov, Q. Z. Li-Demarteau, B. Gibbard, P. Tamburello, J. S. Hoftun, K. Davis, J. N. Butler, Heng Xu, P. D. Grannis, L. Magaña-Mendoza, S. Feher, S. M. Chang, H. Piekarz, Pushpalatha C Bhat, A. Zylberstejn, K. Del Signore, E. G. Zverev, Anna Goussiou, Randy Ruchti, Ting Hu, V. A. Bezzubov, S. C. Loken, A. L. Spadafora, K. Gounder, J. Sculli, R. Hernández-Montoya, F. Stichelbaut, H. Greenlee, Alexander Belyaev, P. Hanlet, C. L. Kim, Haifeng Li, J. P. Negret, R. P. Smith, A. Zieminski, Gregory R Snow, V. Oguri, Michael Shupe, Hiroaki Aihara, S. Fuess, G. Finocchiaro, N. Sotnikova, J. Krane, H. Lan, B. Lauer, M. A.C. Cummings, B. Hoeneisen, H. L. Melanson, P. Z. Quintas, A. Bross, Lee Sawyer, D. Stewart, S. N. Gurzhiev, P. I. Goncharov, Stephen Wimpenny, P. M. Tuts, R. L. McCarthy, M. Merkin, M. L. Kelly, Howard Gordon, Heriberto Castilla-Valdez, G. P. Grim, Gordon Watts, V. Sirotenko, R. W. Stephens, Meenakshi Narain, M. L. Stevenson, T. Marshall, Gervasio Gomez, Serban Protopopescu, S. Y. Jun, T. L.T. Thomas, B. May, K. C. Frame, Andrew White, O. V. Eroshin, O. Ramirez, Dhiman Chakraborty, Phillip Gutierrez, N. Denisenko, M. Chung, D. P. Stoker, M. H.G. Souza, A. V. Kotwal, Harrison Prosper, S. Reucroft, C. Yoshikawa, Darien Wood, T. McMahon, Y. E. Gutnikov, J. Warchol, Y. M. Park, S.A. Kahn, T. Huehn, D. Fein, Peter Nemethy, H. D. Wahl, T. G. Trippe, G. Eppley, P. Yepes, J. Kourlas, Nicholas John Hadley, Y. Fisyak, J. H. Christenson, S. Blessing, Scott Snyder, H. E. Montgomery, R. Markeloff, I. Adam, P. Rubinov, K. W. Merritt, J. F. Bartlett, A. Narayanan, F. Borcherding, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, Sharon Hagopian, M. Demarteau, John Hobbs, A. K.A. Maciel, Yanwen Liu, Raymond Brock, Boaz Klima, Erich Varnes, L. Lueking, H. da Motta, J. G.R. Lima, S. Chopra, F. Lobkowicz, B. Gobbi, K. Bazizi, E. Oltman, Daniel John Karmgard, C. K. Jung, M. Sosebee, A. S. Ito, P. Padley, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, Young-Sang Yu, A. L. Lyon, D. Norman, E. Amidi, J. V.D. Wirjawan, Shuichi Kunori, N. Grossman, R. Piegaia, Anurag Gupta, N. Amos, S. Willis, Alexey Volkov, J. Yang, Jing Li, M. Pang, J. Bantly, V. N. Evdokimov, D.S. Koltick, Quing Zhu, A. N. Galyaev, V. M. Podstavkov, Jasvinder A. Singh, Elizabeth Gallas, M. Fortner, Y. Pischalnikov, Ulrich Heintz, J. Perkins, M. Abolins, H. Jöstlein, T. Yasuda, P. Mooney, B. Pawlik, W. Smart, K. A. Johns, W. E. Cooper, P. Yamin, M. Diesburg, James H Cochran, L. P. Chen, N. K. Mondal, Daniel R Claes, Marvin Johnson, H. T. Diehl, H. Singh, D. Owen, A. Boehnlein, A. V. Kozelov, Andrew Brandt, P. M. Sood, R. Engelmann, J. Tarazi, Emanuela Barberis, S. Mani, J. Z.Y. Jiang, J. Ellison, Mitchell Wayne, H. Schellman, J. M. Kohli, L. T. Goss, H.E. Miettinen, J. Jaques, J. Kotcher, R. Madden, E. A. Kozlovski, L. Rasmussen, H. Haggerty, S. Lökös, Peter W. Draper, Ron Lipton, J. Womersley, Joan A. Guida, M. M. Baarmand, Sarah Catherine Eno, G. Di Loreto, J. Thompson, D. Denisov, Srinivasan Rajagopalan, O. I. Dahl, Thomas Ferbel, Dan Green, N. Graf, K. Streets, Vipin Bhatnagar, B. Gómez, Vyacheslav Klyukhin, Z. H. Zhu, F. Nang, R. Partridge, Brajesh C Choudhary, H. S. Mao, D. L. Adams, A. Baden, Shashikant Dugad, Bobby Samir Acharya, G. C. Blazey, H. A. Neal, H. C. Shankar, J. T. Linnemann, R. Yamada, M. Goforth, S. H. Ahn, Jinhong Yu, A. Klatchko, F. Landry, John Rutherfoord, D. Edmunds, E. W. Anderson, Mary Beth Adams, Andre Sznajder, M. D. Peters, James C. Green, K. S. Hahn, Allen Mincer, L. Oesch, D. Cutts, Sebastian Grinstein, Michael A. Strauss, Greg Landsberg, T. McKibben, A. V. Kostritskiy, T. L. Geld, Sissel Hansen, C. Boswell, Natalie A. Roe, M. Paterno, Alexander Vorobiev, Suman Bala Beri, R. Jesik, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, J. S. Kang, J. McDonald, S. Banerjee, V. Balamurali, B. G. Pope, Elizaveta Shabalina, J. T. White, S. Peryshkin, G. Wang, Alberto Santoro, Seong Keun Kim, J. M. Hauptman, Cecilia Elena Gerber, Jianming Qian, Tong Hu, T. Joffe-Minor, H. E. Fisk, and J. Solomon
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Tevatron, Elementary particle, Nuclear physics, Particle decay, Mass spectrum, Transverse mass, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Lepton, Boson
Abstract: A measurement of the mass of the W boson is presented which is based on a sample of 5982 W → eνv decays observed in pp collisions at √s=1.8 TeV with the D∅ detector during the 1992-1993 run. From a fit to the transverse mass spectrum, combined with measurements of the Z boson mass, the W boson mass is measured to be MW=80.350±0.140(stat)±0.165(syst)±0.160(scale) GeV/c 2 . Detailed discussions of the determination of the absolute energy scale, the measured efficiencies, and all systematic uncertainties are presented.
Published: 1998

139. Search For Heavy Pointlike Dirac Monopoles

Author: M. Sosebee, S. Mani, D. Lincoln, Andrew White, F. Borcherding, J. M. Hauptman, Cecilia Elena Gerber, D. Casey, J. Kotcher, J. Bantly, Joan A. Guida, H. Greenlee, O. I. Dahl, J. McKinley, Wagner Carvalho, R. Jesik, R. L. McCarthy, D. Vititoe, R. J. Genik, N. Graf, G. Di Loreto, Elizabeth Gallas, G. Steinbrück, Jianming Qian, J. Kourlas, L. T. Goss, S. P. Denisov, P. Grudberg, L. Magaña-Mendoza, J. V. D. Wirjawan, M. M. Baarmand, Sarah Catherine Eno, D. Denisov, C. Boswell, Stephen Wimpenny, John Hobbs, Tong Hu, Andrew Brandt, R. Engelmann, M. Merkin, C. S. Mishra, K. Streets, Vipin Bhatnagar, M. R. Krishnaswamy, C. Murphy, Suman Bala Beri, B. Baldin, R. Partridge, R. Astur, Y. M. Park, M. Strauss, V. Gavrilov, Srinivasan Rajagopalan, Thomas Ferbel, Young-Sang Yu, E. A. Kozlovsky, H.E. Miettinen, E. Smith, A. Jonckheere, Peter Nemethy, Y. Ducros, M. Chung, F. Hsieh, D. Edmunds, Andre Sznajder, T. Heuring, F. Nang, D. Buchholz, G. Eppley, A. R. Clark, D. A. Stoyanova, P. Bloom, Edilamar Menezes de Oliveira, Raymond Brock, J. S. Kang, D. R. Green, Darien Wood, Sergey Chekulaev, H. da Motta, K. Del Signore, Sun Kee Kim, Boaz Klima, S. Fuess, M. D. Peters, L. Oesch, Nicholas John Hadley, D. L. Adams, T. Fahland, P. Tamburello, S. A. Jerger, M. Tartaglia, M. D. Jones, P. Hanlet, S. Blessing, S. Feher, Pm Tuts, Hiroaki Aihara, Gervasio Gomez, Heng Xu, Scott Snyder, J. M. Guida, M. I. Martin, D. Koltick, Ting Hu, I. Adam, P. Rubinov, R. Markeloff, Anna Goussiou, Y. Pischalnikov, E. W. Anderson, E. G. Zverev, S. Willis, K. W. Merritt, B. Hoeneisen, E. Flattum, R. Yamada, S. Kuleshov, K. A. Johns, L. Babukhadia, R. W. Stephens, Robert Hirosky, M. Bhattacharjee, G. Finocchiaro, Bobby Samir Acharya, H. A. Neal, D. Hedin, Victor Daniel Elvira, C. Klopfenstein, G. Wang, Alberto Santoro, J. A. Wightman, J. F. Bartlett, K. S. Hahn, H. C. Shankar, J. T. Linnemann, D. Cutts, T. G. Trippe, K. Genser, A. Leflat, J. H. Christenson, V. Manankov, N. I. Bojko, Greg Landsberg, D. Norman, W. Y. Chen, Gilvan Alves, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, N. N. Biswas, T. Joffe-Minor, H. L. Melanson, H. E. Fisk, A. N. Galyaev, S. Grinstein, Yanwen Liu, Kaushik De, H. E. Montgomery, B. May, Gregory R Snow, V. A. Bezzubov, J. P. Negret, H. Jöstlein, R. P. Smith, V. Stolin, Sharon Hagopian, A. K.A. Maciel, Emanuela Barberis, J. Z.Y. Jiang, N. Mokhov, M. Roco, E. Oltman, J. Jaques, Allen Mincer, S. Y. Jun, Z. Zhou, J. Solomon, T. L. Geld, M. Paterno, R. Piegaia, G. Guglielmo, V. S. Narasimham, S. Reucroft, W. G. Cobau, Ron Lipton, W. E. Cooper, L. P. Chen, Michael Shupe, J. S. Hoftun, K. Davis, J. N. Butler, Daniel R Claes, H. Haggerty, R. K. Shivpuri, P. Yamin, P. D. Grannis, H. Piekarz, S. Chopra, B. Gobbi, Heriberto Castilla-Valdez, J. Womersley, K. M. Mauritz, P.F. Ermolov, V. S. Burtovoi, B. Gómez, T. L.T. Thomas, M. Narain, A. A. Mayorov, A. Bross, A. Zieminski, A. Para, U. Heintz, M. K. Fatyga, S. Krzywdzinski, R. Hernández-Montoya, S. Glenn, A. Baden, G. C. Blazey, P. Padley, D. Stewart, S. N. Gurzhiev, J. McDonald, Anurag Gupta, N. Sotnikova, Alexey Volkov, B. Pawlik, D. Karmanov, S. H. Ahn, J. Krane, S. Banerjee, Jasvinder A. Singh, T. Marshall, B. Gibbard, R. J. Madaras, A. V. Kotwal, R. Snihur, R. Madden, S. Youssef, S. Choi, Hsiang-nan Li, Brad Abbott, Brajesh C Choudhary, F. Landry, John Rutherfoord, James H Cochran, Harrison Prosper, M. L. Kelly, V. Balamurali, T. Yasuda, S. Lökös, Howard Gordon, K. C. Frame, O. Ramirez, M. Diesburg, J. Sculli, Mitchell Wayne, H. Schellman, J. M. Kohli, L. Rasmussen, Peter W. Draper, A. Sanchez-Hernandez, G. E. Forden, A. P. Heinson, P. Gartung, D. Owen, Mary Beth Adams, D. Zieminska, T. McKibben, J. Yu, Gordon Watts, S. M. Chang, J. Yang, Robert Kehoe, J. Balderston, V. Sirotenko, J. Tarazi, M. H.G. Souza, P. Z. Quintas, S. Grünendahl, Alexander Vorobiev, P. Yepes, C. Yoshikawa, H. S. Mao, Nikos Varelas, J. Snow, P. Mooney, F. Lobkowicz, G. Kalbfleisch, Q. Z. Li-Demarteau, R. Raja, Stephan Linn, Eunil Won, S. Hansen, F. Stichelbaut, O. V. Eroshin, T. Rockwell, Iain Alexander Bertram, L. Sawyer, N. Oshima, M. Fortner, Michael Rijssenbeek, J. Thompson, R. D. Schamberger, Alexander Belyaev, J. Perkins, H. D. Wahl, B. G. Pope, M. L. Stevenson, Pushpalatha C Bhat, V. N. Evdokimov, J. Warchol, Z. H. Zhu, K. Gounder, Elizaveta Shabalina, P. Gutierrez, B. Lauer, M. A.C. Cummings, A. L. Lyon, S. C. Loken, J. T. White, G. Gutierrez, Shashikant Dugad, Shuichi Kunori, R. E. Hall, S.A. Kahn, Y. Gershtein, M. Demarteau, J. L. González Solís, Vasken Hagopian, N. Amos, H. Weerts, Z. Casilum, W. Smart, Lev Dudko, A. Narayanan, A. V. Kostritskiy, A. S. Ito, N. Parua, Dhiman Chakraborty, L. Coney, C. L. Kim, J. G. R. Lima, A. Zylberstejn, Randy Ruchti, V. Oguri, C. Cretsinger, Serban Protopopescu, M. Strovink, E. James, T. Huehn, D. Fein, Erich Varnes, Daniel John Karmgard, Jing Li, D. P. Stoker, T. McMahon, A. L. Spadafora, Y. Fisyak, Marvin Johnson, P. I. Goncharov, A. V. Kozelov, M. Abolins, N. K. Mondal, H. T. Diehl, H. Singh, A. Boehnlein, J. Ellison, C. K. Jung, and L. Lueking
Subjects: Physics, Particle physics, Photon, Dirac (video compression format), Magnetic monopole, Tevatron, General Physics and Astronomy, FOS: Physical sciences, High Energy Physics - Experiment, Nuclear physics, symbols.namesake, High Energy Physics - Experiment (hep-ex), Pair production, Dirac equation, symbols, Production (computer science), High Energy Physics::Experiment, Nuclear Experiment, Spin-½
Abstract: We have searched for central production of a pair of photons with high transverse energies in $p\bar p$ collisions at $\sqrt{s} = 1.8$ TeV using $70 pb^{-1}$ of data collected with the D\O detector at the Fermilab Tevatron in 1994--1996. If they exist, virtual heavy pointlike Dirac monopoles could rescatter pairs of nearly real photons into this final state via a box diagram. We observe no excess of events above background, and set lower 95% C.L. limits of $610, 870, or 1580 GeV/c^2$ on the mass of a spin 0, 1/2, or 1 Dirac monopole., Comment: 12 pages, 4 figures
Published: 1998
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140. Studies of gauge boson pair production and trilinear couplings

Author: J. P. Negret, R. P. Smith, R. K. Shivpuri, Michael Shupe, F. Borcherding, J. Drinkard, M. Tartaglia, A. V. Kotwal, Harrison Prosper, Kaushik De, M. M. Baarmand, Sarah Catherine Eno, M. Bhattacharjee, R. Hirosky, Vyacheslav Klyukhin, B. Gibbard, F. Nang, G. Finocchiaro, K. Del Signore, F. Lobkowicz, K. M. Mauritz, S. Lami, D. Casey, S. Reucroft, P.F. Ermolov, C. L. Kim, Hiroaki Aihara, T. Rockwell, Iain Alexander Bertram, T. G. Trippe, A. Bross, C. Yoshikawa, Andrew White, Michael Rijssenbeek, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, V. S. Burtovoi, G. P. Grim, R. W. Stephens, M. Diesburg, D. Owen, Sharon Hagopian, P. Gartung, J. Tarazi, Rajendran Raja, M.K. Fatyga, A. K.A. Maciel, K. Streets, Vipin Bhatnagar, S. Fuess, T. McMahon, Y. E. Gutnikov, B. May, A. N. Galyaev, V. N. Evdokimov, J. Warchol, E. Oltman, Brad Abbott, T. McKibben, Alexander Belyaev, Gervasio Gomez, D.S. Koltick, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, S. Chopra, Heriberto Castilla-Valdez, M. Chung, Stephen Wimpenny, R. J. Madaras, K. S. Hahn, D. Cutts, R. Partridge, E. Flattum, P. Bloom, J. A. Wightman, C. Klopfenstein, Gordon Watts, V. Sirotenko, J. Kourlas, Q. Liu, N. I. Bojko, M. Nicola, A. L. Lyon, Shuichi Kunori, W. E. Cooper, R. Piegaia, L. P. Chen, Daniel R Claes, T. Joffe-Minor, T. L. Thomas, A. V. Kostritskiy, T. Marshall, R. Snihur, J. Featherly, Greg Landsberg, B. Gobbi, T. L. Geld, Elizabeth Gallas, Marvin Johnson, Natalie A. Roe, M. Sosebee, O. V. Eroshin, Darien Wood, Phillip Gutierrez, John Hobbs, H. S. Mao, D. L. Adams, N. Varelas, C. Yanagisawa, Sissel Hansen, Nicholas John Hadley, W. Y. Chen, George R. Kalbfleisch, M. Paterno, V. S. Narasimham, S. Blessing, A. Baden, Young-Sang Yu, H. E. Fisk, S. M. Chang, A. V. Kozelov, Scott Snyder, L. Magaña-Mendoza, Anurag Gupta, Jasvinder A. Singh, A. A. Mayorov, G. C. Blazey, R. Yamada, R. Markeloff, S. H. Ahn, L. Markosky, C. S. Mishra, R. Hernández-Montoya, G. Guglielmo, J. M. Guida, N. Sotnikova, T. Fahland, D. Hedin, Joan A. Guida, R. L. McCarthy, P. Padley, Alexey Volkov, M. Merkin, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, S. Feher, Ting Hu, F. Landry, John Rutherfoord, D. Edmunds, J. Krane, H. Lan, M. K. Fatyga, J. Snow, A. Zieminski, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, Andre Sznajder, T. Yasuda, M. H.G. Souza, P. Yepes, H. E. Montgomery, Raymond Brock, Boaz Klima, Vasken Hagopian, H. Weerts, Lev Dudko, J. Bantly, J. Sculli, B. Gómez, Z. H. Zhu, Shashikant Dugad, G. Di Loreto, Mary Beth Adams, James C. Green, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, M. Goforth, D. Norman, Jinhong Yu, M. D. Peters, D. Pušeljić, W. Smart, K. A. Johns, Peter Nemethy, N. Parua, S. Youssef, S. Choi, J. Solomon, L. Oesch, Alexander Vorobiev, Sun Kee Kim, Dhiman Chakraborty, D. Denisov, R. Jesik, G. E. Forden, A. P. Heinson, J. Kotcher, S. Willis, M. Pang, A. Klatchko, R. E. Hall, Matthew Jones, C. Murphy, E. W. Anderson, Srinivasan Rajagopalan, D. Buchholz, V. Oguri, Thomas Ferbel, Dan Green, A. Sanchez-Hernandez, O. I. Dahl, Robert Kehoe, Michael A. Strauss, N. Graf, G. Eppley, Allen Mincer, J. Jaques, B. G. Pope, Sebastian Grinstein, D. P. Stoker, P. Tamburello, Heng Xu, Q. Z. Li-Demarteau, C. Boswell, Randy Ruchti, H. da Motta, J. G.R. Lima, Ron Lipton, R. Astur, J. Li, T. Heuring, Andrew Brandt, J. L. González Solís, R. Engelmann, M. L. Stevenson, Anna Goussiou, J. Balderston, A. S. Ito, J. Womersley, S. Abachi, Pm Tuts, H. L. Melanson, P. Z. Quintas, Suman Bala Beri, Nikolai Mokhov, Gregory R Snow, E. Shabalina, D. Stewart, S. N. Gurzhiev, J. T. White, H. D. Wahl, H.E. Miettinen, R. L. Lander, D. Lincoln, S. A. Jerger, Eunil Won, S. Krzywdzinski, A. Leflat, Y. Fisyak, J. H. Christenson, W. G. Cobau, M. I. Martin, Brajesh C Choudhary, C. Cretsinger, M. Strovink, E. James, J. McDonald, S. Glenn, B. Baldin, V. I. Kochetkov, J. McKinley, D. A. Stoianova, Wagner Carvalho, S. Banerjee, H. Johari, V. Balamurali, Gilvan Alves, P. Yamin, Y. Ducros, Quing Zhu, E. G. Zverev, D. Nešić, A. Zylberstejn, H. Greenlee, E. Amidi, J. V.D. Wirjawan, Victor Daniel Elvira, G. Wang, Alberto Santoro, Haifeng Li, J. M. Hauptman, Cecilia Elena Gerber, S. Mani, Serban Protopopescu, Jianming Qian, Meenakshi Narain, R. Madden, Tong Hu, T. Huehn, L. Rasmussen, D. Fein, Peter W. Draper, A. Narayanan, P. A. Rapidis, Erich Varnes, A. Jonckheere, Stephan Linn, J. M. De Miranda, N. Oshima, Daria Zieminska, R. D. Schamberger, A. Smith, Soon Yung Jun, Pushpalatha C Bhat, N. Grossman, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, Y. M. Park, S.A. Kahn, M. Demarteau, D. Vititoe, R. J. Genik, J. S. Kang, S. C. Loken, N. Amos, J. Borders, J. Z.Y. Jiang, L. T. Goss, E. A. Kozlovski, H. Haggerty, S. Lökös, J. Yang, V. M. Podstavkov, M. Fortner, J. Perkins, A. L. Spadafora, P. I. Goncharov, M. Abolins, P. Mooney, N. K. Mondal, H. T. Diehl, H. Singh, A. Boehnlein, P. M. Sood, J. Ellison, C. K. Jung, I. Adam, P. Rubinov, K. W. Merritt, J. F. Bartlett, Yanwen Liu, L. Lueking, K. Bazizi, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, S. Grünendahl, A. Para, Sergey Chekulaev, and V. A. Bezzubov
Subjects: Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, FOS: Physical sciences, Order (ring theory), Elementary particle, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pair production, Production (computer science), High Energy Physics::Experiment, Energy (signal processing), Boson
Abstract: The gauge boson pair production processes Wg, WW, WZ, and Zg were studied using pbarp collisions corresponding to an integrated luminosity of ~14 pb-1 at a center-of-mass energy of sqrt(s) = 1.8 TeV. Analysis of Wg prod with subsequent W boson decay to lv (l=e,mu) is reported, including a fit to the pT spectrum of the photons which leads to limits on anomalous WWg couplings. A search for WW prod with subsequent decay to l-lbar-v-vbar (l=e,mu) is presented leading to an upper limit on the WW prod cross section and limits on anomalous WWg and WWZ couplings. A search for high pT W bosons in WW and WZ prod is described, where one W boson decays to an ev and the second W boson or the Z boson decays to two jets. A maximum likelihood fit to the pT spectrum of W bosons resulted in limits on anomalous WWg and WWZ couplings. A combined fit to the three data sets which provided the tightest limits on anomalous WWg and WWZ couplings is also described. Limits on anomalous ZZg and Zgg couplings are presented from an analysis of the photon ET spectrum in Zg events in the decay channels (ee, mu-mu, and v-vbar) of the Z boson., 77 Pages including 40 Figures. Submitted to PRD
Published: 1997

141. THE EXTREMELY RED, YOUNG L DWARF PSO J318.5338–22.8603: A FREE-FLOATING PLANETARY-MASS ANALOG TO DIRECTLY IMAGED YOUNG GAS-GIANT PLANETS

Author: Richard J. Wainscoat, William S. Burgett, K. C. Chambers, John Morgan, Nick Kaiser, Klaus W. Hodapp, Peter W. Draper, John L. Tonry, Nigel Metcalfe, Michael C. Kotson, Kimberly M. Aller, Robert Jedicke, Michael C. Liu, Katelyn N. Allers, Paul A. Price, Niall R. Deacon, Trent J. Dupuy, R. P. Kudritzki, and Eugene A. Magnier
Subjects: Physics, Absolute magnitude, Brown dwarfs, Proper motion, Solar neighborhood, 010504 meteorology & atmospheric sciences, Parallaxes, Brown dwarf, Astronomy and Astrophysics, Astrophysics, Surface gravity, 01 natural sciences, Spectral line, 13. Climate action, Space and Planetary Science, Planet, 0103 physical sciences, atmospheres [Planets and satellites], Proper motions, Surveys, 010303 astronomy & astrophysics, Planetary mass, 0105 earth and related environmental sciences, AB Doradus moving group
Abstract: We have discovered using Pan-STARRS1 an extremely red late-L dwarf, which has (J – K){sub MKO} = 2.78 and (J – K){sub 2MASS} = 2.84, making it the reddest known field dwarf and second only to 2MASS J1207–39b among substellar companions. Near-IR spectroscopy shows a spectral type of L7 ± 1 and reveals a triangular H-band continuum and weak alkali (K I and Na I) lines, hallmarks of low surface gravity. Near-IR astrometry from the Hawaii Infrared Parallax Program gives a distance of 24.6 ± 1.4 pc and indicates a much fainter J-band absolute magnitude than field L dwarfs. The position and kinematics of PSO J318.5–22 point to membership in the β Pic moving group. Evolutionary models give a temperature of 1160{sup +30}{sub -40} K and a mass of 6.5{sup +1.3}{sub -1.0} M {sub Jup}, making PSO J318.5–22 one of the lowest mass free-floating objects in the solar neighborhood. This object adds to the growing list of low-gravity field L dwarfs and is the first to be strongly deficient in methane relative to its estimated temperature. Comparing their spectra suggests that young L dwarfs with similar ages and temperatures can have different spectral signatures of youth. For the two objectsmore » with well constrained ages (PSO J318.5–22 and 2MASS J0355+11), we find their temperatures are ≈400 K cooler than field objects of similar spectral type but their luminosities are similar, i.e., these young L dwarfs are very red and unusually cool but not 'underluminous'. Altogether, PSO J318.5–22 is the first free-floating object with the colors, magnitudes, spectrum, luminosity, and mass that overlap the young dusty planets around HR 8799 and 2MASS J1207–39.« less
Published: 2013

142. Search for a Fourth Generation Charge -1/3 Quark via Flavor Changing Neutral Current Decay

Author: G. Finocchiaro, Marc M Baarmand, H. D. Wahl, T. Yasuda, P. Gartung, M.K. Fatyga, T. Huehn, B. S. Acharya, J. Jaques, C. L. Kim, P. Yepes, R. Hernández-Montoya, H. Lan, Ron Lipton, Robert Hirosky, R. K. Shivpuri, K. S. Hahn, D. Cutts, D. R. Claes, S. Protopopescu, S. P. Denisov, J. Womersley, B. May, C. T. Murphy, S. Youssef, S. Choi, M. Nicola, L. Magaña-Mendoza, J. Drinkard, N. Amos, K. Genser, Rajendran Raja, Greg Landsberg, M. Tartaglia, T. L. Geld, Elizabeth Gallas, Matthew Jones, D. Fein, D. Chakraborty, H. Jostlein, A. V. Kostritskiy, Robert J. McCarthy, A. Sanchez-Hernandez, Gervasio Gomez, Yu. Pischalnikov, D. Casey, Brad Abbott, P. Singh, W. Y. Chen, R. W. Stephens, M. R. Krishnaswamy, Kaushik De, D.R. Green, J. Balderston, J. Kotcher, D. Pušeljić, S. M. Chang, Don Lincoln, Erich Varnes, D. P. Stoker, Sissel Hansen, A. Jonckheere, George R. Kalbfleisch, E. G. Zverev, P. C. Bhat, D. Buchholz, F. Lobkowicz, Eunil Won, B. Gobbi, A. Gupta, S. Feher, F. Hsieh, P. Bloom, A. R. Clark, Ting Hu, E. Flattum, J. M. De Miranda, F. Borcherding, Brajesh C Choudhary, M. Strauss, M. Merkin, N. I. Bojko, V. S. Narasimham, Stephan Linn, Q. Z. Li-Demarteau, N. Graf, Peter Nemethy, A. Zieminski, A. Para, A. Klatchko, C. Shaffer, D. Cullen-Vidal, G. Eppley, A. Goldschmidt, M. A. Shupe, Sergey Chekulaev, T. Rockwell, Iain Alexander Bertram, R. Jesik, C. Cretsinger, E. Oltman, Raymond Brock, M. Chung, N. Parua, Boaz Klima, N. N. Biswas, Randy Ruchti, A. A. Mayorov, H. L. Melanson, P. Z. Quintas, J. S. Hoftun, J. N. Butler, P. D. Grannis, P. A. Rapidis, H. da Motta, J. G.R. Lima, M. Strovink, E. James, K. Bazizi, A. L. Spadafora, H. Piekarz, Sarah Catherine Eno, M. K. Fatyga, J. H. Christenson, P. Tamburello, Michael Rijssenbeek, I. Adam, S. Y. Jun, T. L.T. Thomas, A. S. Ito, C. Klopfenstein, P. I. Goncharov, N. Oshima, S. Chopra, D. Nesic, B. Baldin, David H. Adams, J. M. Hauptman, Gilvan Alves, D. Norman, Vyacheslav Klyukhin, M. Bhattacharjee, P. Padley, G.E. Forden, Alexey Volkov, J. Snow, Heng Xu, F. Nang, J. M. Guida, Y. Ducros, Daria Zieminska, J. B. Singh, K. W. Merritt, A. Baden, S. A. Jerger, James H Cochran, Gordon Watts, H. A. Neal, B. Gibbard, Mitchell Wayne, H. Schellman, J. M. Kohli, S. Willis, V. Sirotenko, K. Streets, Vipin Bhatnagar, G. C. Blazey, H. C. Shankar, O. V. Eroshin, M. Pang, J. F. Bartlett, M. Goforth, Anna Goussiou, Stefan Grünendahl, J. Thompson, L. Lueking, R. Yamada, Phillip Gutierrez, D. Stewart, E. Amidi, Robert Kehoe, J. Sculli, Sebastien Jonathan Kahn, S. N. Gurzhiev, S. H. Ahn, A. V. Kotwal, Victor Daniel Elvira, B. Gómez, Z. H. Zhu, A. D. Bross, Yanwen Liu, J. V.D. Wirjawan, Nikos Varelas, Orin I. Dahl, F. Landry, John Rutherfoord, V. N. Evdokimov, Robert Snihur, Jing Li, J. A. Wightman, Y. Fisyak, M. Demarteau, C. S. Mishra, Stephen Wimpenny, S. Reucroft, R. Lander, H. S. Mao, J. Featherly, A. M. Smith, M. Abolins, A. N. Galyaev, K. Del Signore, D.S. Koltick, J. T. Linnemann, M. L. Kelly, Andrew White, Heriberto Castilla-Valdez, Marvin Johnson, Alexander Belyaev, G. Guglielmo, Sun Kee Kim, A. L. Lyon, T. Marshall, P. Mooney, C. Yoshikawa, J. T. White, Vasken Hagopian, Gregory R Snow, A. V. Kozelov, James C. Green, Darien Wood, Hiroaki Aihara, E. W. Anderson, P. Grudberg, T. Fahland, Y. E. Gutnikov, H. Weerts, W. M. Smart, S. R. Dugad, N. K. Mondal, H. T. Diehl, Nicholas John Hadley, H. Singh, J. Krane, J. Kourlas, S. Krzywdzinski, Lev Dudko, V. I. Kochetkov, S. Blessing, Quing Zhu, Howard Gordon, P. M. Tuts, A. Boehnlein, Scott Snyder, B. Lauer, M. A.C. Cummings, G. P. Grim, P. M. Sood, Q. Liu, T. G. Trippe, B. Hoeneisen, V. Oguri, R. Markeloff, Lee Sawyer, T.R. McMahon, John Hobbs, Ulrich Heintz, M. Paterno, M. L. Stevenson, J. Ellison, S. Fuess, A. Zylberstejn, Allen Mincer, M. R. Adams, Young-Sang Yu, M. H.G. Souza, W. E. Cooper, M. Diesburg, L. Markosky, Joan A. Guida, R. Partridge, J. Warchol, H. Greenlee, N. A. Roe, D. Owen, H. E. Montgomery, Sharon Hagopian, A. K.A. Maciel, N. Sotnikova, J. Tarazi, G. Di Loreto, Shuichi Kunori, K. A. Johns, D. Denisov, D. Hedin, Y. M. Park, Srinivasan Rajagopalan, Thomas Ferbel, Jong-Sung Yu, S. Lami, N.V. Mokhov, V. A. Bezzubov, J. P. Negret, P.F. Ermolov, A. P. Heinson, P. Yamin, V. S. Burtovoi, R. P. Smith, R. E. Hall, J. L. González Solís, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, R. Astur, R. J. Madaras, M. Sosebee, Harrison Prosper, Hui Li, J. Bantly, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, T. Heuring, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, Meenakshi Narain, D. Edmunds, A. Narayanan, Andre Sznajder, M. D. Peters, L. Oesch, C. Boswell, S. Abachi, Suman Bala Beri, K. C. Frame, O. Ramirez, B. G. Pope, R. D. Schamberger, S. C. Loken, E. Shabalina, N. Grossman, J. Borders, J. Z.Y. Jiang, A. Leflat, L. T. Goss, W. G. Cobau, M. I. Martin, J. S. Kang, E. A. Kozlovski, Sándor Lökös, J. Yang, J. McDonald, V. M. Podstavkov, M. Fortner, J. Perkins, S. Banerjee, V. Balamurali, C. K. Jung, T. McKibben, G. Wang, Alberto Santoro, Alexander Vorobiev, H. Haggerty, P. Rubinov, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, J. Solomon, Cecilia Elena Gerber, Jianming Qian, and Tong Hu
Subjects: Quark, Physics, Particle physics, Branching fraction, Flavor-changing neutral current, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, FOS: Physical sciences, Charge (physics), Prime (order theory), High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pair production, Production (computer science), High Energy Physics::Experiment
Abstract: We report on a search for pair production of a fourth generation charge -1/3 quark (b') in pbar p collisions at sqrt(s) = 1.8 TeV at the Fermilab Tevatron using an integrated luminosity of 93 pb^-1. Both quarks are assumed to decay via flavor changing neutral currents (FCNC). The search uses the signatures gamma + 3 jets + mu-tag and 2 gamma + 2 jets. We see no significant excess of events over the expected background. We place an upper limit on the production cross section times branching fraction that is well below theoretical expectations for a b' quark decaying exclusively via FCNC for b' quark masses up to m(Z) + m(b)., Eleven pages, two postscript figures, submitted to Physical Review Letters
Published: 1996

143. 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

144. The Starburst Galaxy NGC1808: Another M82?

Author: Peter W. Draper, S. M. Scarrott, and D. P. Stockdale
Subjects: Physics, Astrophysics::High Energy Astrophysical Phenomena, Protogalaxy, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Grand design spiral galaxy, Astrophysics, Galaxy merger, Barred spiral galaxy, Unbarred spiral galaxy, Interacting galaxy, Irregular galaxy, Lenticular galaxy, Astrophysics::Galaxy Astrophysics
Abstract: An optical polarization map of the starburst galaxy NGC1808 shows that on kpc scales there is a coherent galactic magnetic field which follows the spiral arms on the galaxy. The inner 750pc surrounding the central region shows characteristics of a huge reflection nebula illuminated by the various hotspots within the starburst. This is very similar to the archetypal starburst galaxy M82.
Published: 1994

145. The origin of the 'polarization disc' in NGC2261/R.Mon

Author: Peter W. Draper, S. M. Scarrott, and R. F. Warren-Smith
Subjects: Physics, Interstellar medium, Space and Planetary Science, Linear polarization, Circumstellar dust, Astronomy, Astronomy and Astrophysics, Astrophysics, Variable star, Polarization (waves)
Abstract: Une serie de cartes de la polarisation lineaire de la nebuleuse cometaire NGC 2261, illuminee et excitee par l'etoile centrale R. Mon, et prises entre 1979 et 1986 suggere que ce systeme est plus complexe qu'une simple nebuleuse reflechissante. Le «disque de polarisation» a subi des changements importants dans l'orientation qui suggerent une origine dans la diffusion du rayonnement a l'interieur d'un disque circumstellaire de gaz/poussiere d'une source centrale emettant de la lumiere polarisee
Published: 1989

146. Magnetic fields and star formation: evidence from imaging polarimetry of the Serpens Reflection Nebula

Author: R. F. Warren-Smith, S. M. Scarrott, and Peter W. Draper
Subjects: Physics, Emission nebula, Serpens, Space and Planetary Science, Reflection nebula, Intergalactic star, Star formation, Binary star, X-ray binary, Protostar, Astronomy, Astronomy and Astrophysics, Astrophysics
Published: 1987

147. Measurement of the nuclear enhancement in high-Etand jet event production

Author: R. Abrams, V.V. Abramov, Sharon Hagopian, T. Sulanke, A. Salminen, J. Ares, Yu.P. Gorin, T. L. Watts, D. McLeod, V. Kryshkin, A. Pifer, V. Glebov, J. Krider, S. Margulies, A. R. Dzierba, Peter W. Draper, B. Baldin, P.T. Smith, H. Haggerty, R. Gomez, E. Malamud, Yu.M. Antipov, J. Solomon, T. Marshall, A. Zieminski, S. Blessing, R. W. Ellsworth, R.M. Sulyaev, A. Sambamurti, A. Snyder, C. Halliwell, G. Wu, H. Goldberg, J. Martin, J. A. Goodman, G. B. Yodh, M. Nikolic, R.R. Crittenden, A.I. Petrukhin, R.M. Heinz, Sergey Denisov, L. Dauwe, C. Stewart, S. Gupta, and Sergey S.A. Polovnikov
Subjects: Physics, Nuclear physics, Jet (fluid), Particle physics, Fermilab, National laboratory, Event (particle physics), Beam energy, Fermi Gamma-ray Space Telescope
Abstract: Propertiea of eventa produced with high values of transverse energy (Et) in 800 GeV/c proton-nucleus collieions are presented. Both full-arimuth and limited aperture high Et triggers were wed to melect event6 from six targets (H, Be, C, Al, Cu, and Pb). The events were collected using the large acceptance Fermilab multiparticle spectrometer that recorded almost 95% of the incoming beam energy. The A dependence of the crow sectiona at a given Rt W(UI parameterixed M Aa . The value of a increases from 0.7 at low Et to a plateau at high Et of approximately 1.6. The high Et value of a is slightly amaller for the limited aperture triggers. A strong dependence of (1 on the event structure was observed; yet-like” events exhibit an A dependence consistent with a-1.0, while for more isotropic events a ia much larger. This observation is consistent with the expected behavior for jet production in pA colliaione. (a) Present address: Dept. of Physics, University of Michigan-Flint, Flint, MI 48502 (*) Present address: Inst. of Nucl. Physics, Novi Sad, Yugoslavia cc) Present address: Dept. of Physics, Univ. of Ariaona, Tucson AZ 85721 cd) Present address: A T & T Bell Laboratories, Naperville, IL, 80540 cc) Present address: Fermi National laboratory, Batavia, IL 60510 (f) Present address: Dept. of Physics, Univ. of Roeheater, NY 14267 (g) Present address: Tata Inst. of Fundamental Research, Bombay, India 400005
Published: 1987

148. Optical polarimetry of nebulae in regions of star formation

Author: S. M. Scarrott, Peter W. Draper, T. M. Gledhill, and Rodney F. Warren-Smith
Subjects: Physics, Linear polarization, Star formation, Molecular cloud, Interstellar cloud, General Physics and Astronomy, Astronomy, Optical polarization, Astrophysics, Polarization (waves), T Tauri star, Astrophysics::Solar and Stellar Astrophysics, Herbig–Haro object, Astrophysics::Galaxy Astrophysics
Abstract: Optical polarization data are presented for nebulosities associated with dark clouds and regions of star formation.Illuminating sources are identified, and it is found that these usually show evidence of polarization induced by aligned grains, which we believe indicates the presence of magnetic fields in the gas–dust tori that surround the central objects.
Published: 1986

149. Illumination of reflection nebulosity in the L1551 dark cloud by the infrared sources IRS5 and L1551NE

Author: S. M. Scarrott, R. F. Warren-Smith, and Peter W. Draper
Subjects: Physics, Infrared astronomy, Optics, Space and Planetary Science, Linear polarization, Infrared, business.industry, Reflection nebula, Reflection (physics), Astronomy and Astrophysics, Astrophysics, business
Abstract: Les donnees de polarisation lineaire optique indiquent que les nebulosites visibles dans le nuage sombre L 1551 sont vues principalement grâce a la lumiere reflechie. On presente les cartes de la polarisation optique de la nebulosite dans le nuage sombre L 1551 et on identifie les sources d'illumination des diverses regions nebuleuses
Published: 1985

150. A polarization study of the cometary nebula Parsamyan 21

Author: S. M. Scarrott, Peter W. Draper, and R. F. Warren-Smith
Subjects: Physics, Nebula, Space and Planetary Science, Reflection nebula, Linear polarization, Polarimetry, Astronomy, Astronomy and Astrophysics, Astrophysics, Polarization (waves)
Abstract: La nebuleuse est relativement fortement polarisee et illuminee par l'etoile qu'elle contient. On observe une bande de polarisation qui peut etre due a des grains alignes dans un tore circumstellaire. Parsamyan 21 ressemble beaucoup, du point de vue de la polarisation, aux nebuleuses cometaires bien etudiees NGC 2261 et 6729, illuminees par R Mon et RGA respectivement
Published: 1985

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