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1. Science Goals and Mission Architecture of the Europa Lander Mission Concept

Author

K. P. Hand, C. B. Phillips, A. Murray, J. B. Garvin, E. H. Maize, R. G. Gibbs, G. Reeves, A. M. San Martin, G. H. Tan-Wang, J. Krajewski, K. Hurst, R. Crum, B. A. Kennedy, T. P. McElrath, J. C. Gallon, D. Sabahi, S. W. Thurman, B. Goldstein, P. Estabrook, S. W. Lee, J. A. Dooley, W. B. Brinckerhoff, K. S. Edgett, C. R. German, T. M. Hoehler, S. M. Hörst, J. I. Lunine, C. Paranicas, K. Nealson, D. E. Smith, A. S. Templeton, M. J. Russell, B. Schmidt, B. Christner, B. Ehlmann, A. Hayes, A. Rhoden, P. Willis, R. A. Yingst, K. Craft, M. E. Cameron, T. Nordheim, J. Pitesky, J. Scully, J. Hofgartner, S. W. Sell, K. J. Barltrop, J. Izraelevitz, E. J. Brandon, J. Seong, J.-P. Jones, J. Pasalic, K. J. Billings, J. P. Ruiz, R. V. Bugga, D. Graham, L. A. Arenas, D. Takeyama, M. Drummond, H. Aghazarian, A. J. Andersen, K. B. Andersen, E. W. Anderson, A. Babuscia, P. G. Backes, E. S. Bailey, D. Balentine, C. G. Ballard, D. F. Berisford, P. Bhandari, K. Blackwood, G. S. Bolotin, E. A. Bovre, J. Bowkett, K. T. Boykins, M. S. Bramble, T. M. Brice, P. Briggs, A. P. Brinkman, S. M. Brooks, B. B. Buffington, B. Burns, M. L. Cable, S. Campagnola, L. A. Cangahuala, G. A Carr, J. R. Casani, N. E. Chahat, B. K. Chamberlain-Simon, Y. Cheng, S. A. Chien, B. T. Cook, M. Cooper, M. DiNicola, B. Clement, Z. Dean, E. A. Cullimore, A. G. Curtis, J-P. de la Croix, P. Di Pasquale, E. M. Dodd, L. A. Dubord, J. A. Edlund, R. Ellyin, B. Emanuel, J. T. Foster, A. J. Ganino, G. J. Garner, M. T. Gibson, M. Gildner, K. J. Glazebrook, M. E. Greco, W. M. Green, S. J. Hatch, M. M. Hetzel, W. A. Hoey, A. E. Hofmann, R. Ionasescu, A. Jain, J. D. Jasper, J. R. Johannesen, G. K. Johnson, I. Jun, A. B. Katake, S. Y. Kim-Castet, D. I. Kim, W. Kim, E. F. Klonicki, B. Kobeissi, B. D. Kobie, J. Kochocki, M. Kokorowski, J. A. Kosberg, K. Kriechbaum, T. P. Kulkarni, R. L. Lam, D. F. Landau, M. A. Lattimore, S. L. Laubach, C. R. Lawler, G. Lim, J. Y Lin, T. E. Litwin, M. W. Lo, C. A. Logan, E. Maghasoudi, L. Mandrake, Y. Marchetti, E. Marteau, K. A. Maxwell, J. B. Mc Namee, O. Mcintyre, M. Meacham, J. P. Melko, J. Mueller, D. A. Muliere, A. Mysore, J. Nash, H. Ono, J. M. Parker, R. C. Perkins, A. E Petropoulos, A. Gaut, M. Y. Piette Gomez, R. P. Casillas, M. Preudhomme, G. Pyrzak, J. Rapinchuk, J. M. Ratliff, T. L. Ray, E. T. Roberts, K. Roffo, D. C. Roth, J. A. Russino, T. M. Schmidt, M. J. Schoppers, J. S. Senent, F. Serricchio, D. J. Sheldon, L. R. Shiraishi, J. Shirvanian, K. J. Siegel, G. Singh, A. R. Sirota, E. D. Skulsky, J. S. Stehly, N. J. Strange, S. U. Stevens, E. T. Sunada, S. P. Tepsuporn, L. P. C. Tosi, N. Trawny, I. Uchenik, V. Verma, R. A. Volpe, C. T. Wagner, D. Wang, R. G. Willson, J. L. Wolff, A. T. Wong, A. K. Zimmer, K. G. Sukhatme, K. A. Bago, Y. Chen, A. M. Deardorff, R. S. Kuch, C. Lim, M. L. Syvertson, G. A. Arakaki, A. Avila, K. J. DeBruin, A. Frick, J. R. Harris, M. C. Heverly, J. M. Kawata, S.-K. Kim, D. M. Kipp, J. Murphy, M. W. Smith, M. D. Spaulding, R. Thakker, N. Z. Warner, C. R. Yahnker, M. E. Young, T. Magner, D. Adams, P. Bedini, L. Mehr, C. Sheldon, S. Vernon, V. Bailey, M. Briere, M. Butler, A. Davis, S. Ensor, M. Gannon, A. Haapala-Chalk, T. Hartka, M. Holdridge, A. Hong, J. Hunt, J. Iskow, F. Kahler, K. Murray, D. Napolillo, M. Norkus, R. Pfisterer, J. Porter, D. Roth, P. Schwartz, L. Wolfarth, E. H. Cardiff, E. W. Grob, J. R. Adam, E. Betts, J. Norwood, M. M. Heller, T. Voskuilen, P. Sakievich, L. Gray, D. J. Hansen, K. W. Irick, J. C. Hewson, J. Lamb, S. C. Stacy, C. M. Brotherton, A. S Tappan, D. Benally, H. Thigpen, E. Ortiz, D. Sandoval, A. M. Ison, M. Warren, P. G. Stromberg, P. M. Thelen, B. Blasy, P. Nandy, A. W. Haddad, L. B. Trujillo, T. H. Wiseley, S. A. Bell, N. P. Teske, C. Post, L. Torres-Castro, C. Grosso, and M. Wasiolek

Published
2022
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2. HyperNP: Interactive Visual Exploration of Multidimensional Projection Hyperparameters

Author

G. Appleby, M. Espadoto, R. Chen, S. Goree, A. C. Telea, E. W. Anderson, and R. Chang

Subjects
FOS: Computer and information sciences, Computer Science - Machine Learning, Computer Science - Human-Computer Interaction, Computer Graphics and Computer-Aided Design, Machine Learning (cs.LG), Human-Computer Interaction (cs.HC)
Abstract

Projection algorithms such as t-SNE or UMAP are useful for the visualization of high dimensional data, but depend on hyperparameters which must be tuned carefully. Unfortunately, iteratively recomputing projections to find the optimal hyperparameter value is computationally intensive and unintuitive due to the stochastic nature of these methods. In this paper we propose HyperNP, a scalable method that allows for real-time interactive hyperparameter exploration of projection methods by training neural network approximations. HyperNP can be trained on a fraction of the total data instances and hyperparameter configurations and can compute projections for new data and hyperparameters at interactive speeds. HyperNP is compact in size and fast to compute, thus allowing it to be embedded in lightweight visualization systems such as web browsers. We evaluate the performance of the HyperNP across three datasets in terms of performance and speed. The results suggest that HyperNP is accurate, scalable, interactive, and appropriate for use in real-world settings.

Published
2021

3. Search for squarks and gluinos in events containing jets and a large imbalance in transverse energy

Author

V. V. Babintsev, Jianming Qian, G. Briskin, Tong Hu, T. Mc Mahon, T. Joffe-Minor, H. E. Fisk, Z. Zhou, J. Solomon, P. Padley, Alexey Volkov, C. Klopfenstein, G. Wang, Alberto Santoro, B. May, Seong Keun Kim, J. Mc Donald, T. Fahland, James H Cochran, Mitchell Wayne, D. Shpakov, M. Abolins, H. Schellman, J. M. Kohli, B. G. Pope, L. Magaña-Mendoza, D. Buchholz, P. Hanlet, Stefan Grünendahl, D. Coppage, J. Thompson, Elizabeth Gallas, F. Lobkowicz, E. Flattum, B. Gobbi, P. Tamburello, P. Mooney, Elizaveta Shabalina, B. Gómez, Z. H. Zhu, F. Borcherding, M. Merkin, C. S. Mishra, Anurag Gupta, S. Feher, B. Baldin, N. Amos, B. Gibbard, T. Rockwell, Iain Alexander Bertram, Robert Hirosky, S. Chopra, N. K. Mondal, Anna Goussiou, Shashikant Dugad, Michael Rijssenbeek, D. Edmunds, Emanuela Barberis, H. T. Diehl, H. Singh, S. Reucroft, J. T. White, E. Smith, C. Cretsinger, N.V. Mokhov, Jasvinder A. Singh, Y. Ducros, C. Yoshikawa, Alexander Leflat, Bobby Samir Acharya, H. A. Neal, J. Sculli, G. E. Forden, M. Strovink, A. Boehnlein, L. T. Goss, G. Guglielmo, R. Hernández-Montoya, H. C. Shankar, J. T. Linnemann, Andre Sznajder, T. Yasuda, M. Bhattacharjee, A. P. Heinson, B. Zhang, Gregory R Snow, Raymond Brock, Boaz Klima, A. Zieminski, Miguel Mostafa, M. D. Peters, V. N. Evdokimov, M. Sosebee, J. Ellison, N. Sotnikova, M. M. Baarmand, J. Krane, D. Norman, D.S. Koltick, Y. Pischalnikov, Ulrich Heintz, K. Yip, Sarah Catherine Eno, R. E. Hall, J. L. González Solís, Andrew White, K. A. Johns, L. Babukhadia, H. Jöstlein, Howard Gordon, R. Jesik, Sergey Kuleshov, Nikos Varelas, H. Haggerty, R. K. Shivpuri, Vasken Hagopian, K. C. Frame, Gilvan Alves, Z. Casilum, C. Murphy, O. Ramirez, S. Willis, P. Grudberg, Sharon Hagopian, H. Weerts, L. Oesch, E. W. Anderson, T. Heuring, T. Mc Kibben, A. K.A. Maciel, Victor Daniel Elvira, Neeti Parashar, Jinhong Yu, F. Nang, C. K. Jung, A. L. Lyon, Shuichi Kunori, S. Krzywdzinski, Q. Z. Li, Allan G Clark, A. N. Galyaev, Lev Dudko, Richard Breedon, John Hobbs, M. Diesburg, D. Owen, P. Bloom, J. A. Wightman, V. Vaniev, J. Tarazi, S. P. Denisov, J. Bantly, M. Fortner, A.S. Dyshkant, M. Tartaglia, P. Gartung, A. Zylberstejn, R. J. Madaras, M. H.G. Souza, J. Perkins, M. Zielinski, N. I. Bojko, Young-Sang Yu, W. Y. Chen, G. Gutierrez, S. Y. Jun, T. L.T. Thomas, K. S. Hahn, S. A. Jerger, D. Cutts, Y. Gershtein, H. Greenlee, Kaushik De, Allen Mincer, M. R. Krishnaswamy, W. E. Cooper, P. Yepes, H. E. Montgomery, J. V.D. Wirjawan, Wagner Carvalho, R. Piegaia, R. Snihur, F. Hsieh, N. Parua, V.V. Abramov, Sebastian Grinstein, A. Bross, Daniel R Claes, W. G. Cobau, M. I. Martin, Greg Landsberg, M. L. Stevenson, A. Para, George R. Kalbfleisch, R. J. Genik, Matthew Jones, J. Jaques, Y. Kulik, Serban Protopopescu, Michael A. Strauss, T. L. Geld, J. S. Hoftun, K. Davis, J. N. Butler, Heriberto Castilla-Valdez, S. N. Gurzhiev, Sergey Chekulaev, P. I. Goncharov, A. V. Kostritskiy, V. S. Narasimham, D. P. Stoker, C. Boswell, C. Miao, Ron Lipton, J. M. Guida, M. Paterno, D. Fein, P. D. Grannis, Alexander Belyaev, Sissel Hansen, H. Piekarz, Arnaud Lucotte, V. Oguri, J. Womersley, Thomas G Trippe, Suman Bala Beri, Don Lincoln, Stephen Wimpenny, I. Adam, P. Rubinov, A. Baden, Erich Varnes, Philip Baringer, Daniel John Karmgard, D. Hedin, G. C. Blazey, Viatcheslav Stolin, C. Hebert, Dhiman Chakraborty, R. Yamada, K. W. Merritt, S. Youssef, S. Choi, T. Marshall, S. Banerjee, K. M. Mauritz, H. D. Wahl, L. Coney, S. H. Ahn, Randy Ruchti, D. Karmanov, J. Warchol, V. A. Bezzubov, Jing Li, Peter Nemethy, Orin I. Dahl, F. Landry, John Rutherfoord, Darien Wood, J. F. Bartlett, V. Manankov, Winston Ko, A. A. Mayorov, A. Sanchez-Hernandez, Robert Kehoe, D. A. Stoyanova, Nicholas John Hadley, S. Fuess, P.F. Ermolov, Brajesh C Choudhary, Mary Beth Adams, J. P. Negret, S. Blessing, R. P. Smith, Andrew Brandt, R. Engelmann, M. Roco, G. Eppley, Scott Snyder, Z. Wu, Gervasio Gomez, Joan A. Guida, R. Markeloff, M. K. Fatyga, G. Steinbrück, Michael Shupe, Vladimir Gavrilov, Y. Fisyak, Gordon Watts, R. Mc Carthy, E. A. Kozlovsky, V. S. Burtovoi, Eunil Won, Rajendran Raja, M. Chung, J. Mc Kinley, V. Sirotenko, O. V. Eroshin, G. Di Loreto, H.E. Miettinen, H. da Motta, Marvin Johnson, J. G.R. Lima, J. Snow, C. Shaffer, D. Cullen-Vidal, K. Genser, Phillip Gutierrez, Brad Abbott, N. N. Biswas, A. V. Kotwal, Harrison Prosper, D. Denisov, A. V. Kozelov, A. S. Ito, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, E. G. Zverev, Pm Tuts, L. Lueking, F. Stichelbaut, Meenakshi Narain, A. Narayanan, K. Del Signore, R. W. Stephens, P. Yamin, S. Mani, R. Madden, Peter W. Draper, Pushpalatha C Bhat, K. Gounder, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, Y. M. Park, S.A. Kahn, M. Demarteau, A. Jonckheere, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, R. D. Schamberger, K. Streets, Vipin Bhatnagar, R. Partridge, H. S. Mao, D. L. Adams, B. Pawlik, D. Casey, J. Kotcher, N. Graf, H. L. Melanson, P. Z. Quintas, J. H. Christenson, J. M. Hauptman, and Cecilia Elena Gerber

Subjects
Physics, Particle physics, Gluino, Supergravity, Physics::Medical Physics, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, FOS: Physical sciences, Supersymmetry, Gluon, Luminosity, Standard Model, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Nuclear Experiment, Energy (signal processing)
Abstract

Using data corresponding to an integrated luminosity of 79 pb-1, D0 has searched for events containing multiple jets and large missing transverse energy in pbar-p collisions at sqrt(s)=1.8 TeV at the Fermilab Tevatron collider. Observing no significant excess beyond what is expected from the standard model, we set limits on the masses of squarks and gluinos and on the model parameters m_0 and m_1/2, in the framework of the minimal low-energy supergravity models of supersymmetry. For tan(beta) = 2 and A_0 = 0, with mu < 0, we exclude all models with m_squark < 250 GeV/c^2. For models with equal squark and gluino masses, we exclude m < 260 GeV/c^2., 10 pages, 3 figures, Submitted to PRL, Fixed typo on page bottom of p. 6 (QCD multijet background is 35.4 events)

Published
2016

4. Observation of diffractively produced W and Z bosons in p̄p collisions at √s = 1800 GeV

Author

R. Van Kooten, Wendy Taylor, A. Patwa, S. Fu, P. Demine, A. Zieminski, Q. Xu, J. Huang, R. A. Sidwell, Alexander Khanov, U. Bassler, A. N. Galyaev, Stephen Wimpenny, G. Steinbrück, Rajendran Raja, H. Zheng, Brad Abbott, Pierre Petroff, S. Fuess, Roger Moore, Zeno Dixon Greenwood, K. W. Merritt, Vladimir Gavrilov, Gordon Watts, D. Coppage, V. Sirotenko, D. K. Cho, Y. Arnoud, R. Illingworth, Regina Demina, T. C. Bacon, E. W. Anderson, M. Buehler, J. F. Bartlett, A. Besson, N. A. Naumann, F. Borcherding, L. Lueking, Bobby Samir Acharya, H. A. Neal, J. T. Linnemann, V. M. Abazov, V. Sorín, O. V. Eroshin, Y. Song, Phillip Gutierrez, T. Marshall, W. E. Cooper, K. Yip, S. Duensing, V. Oguri, Ulrich Heintz, D. Fein, D. Chakraborty, S. Chopra, Don Lincoln, Q. Z. Li, P. W. Balm, V. Manankov, M. Abolins, S. Reucroft, D. P. Stoker, Gustaaf Brooijmans, H. Jöstlein, Darien Wood, G. Sajot, P. Yamin, Frank Filthaut, A. Stone, Daniel John Karmgard, Elemer Nagy, N. R. Stanton, S. N. Ahmed, M. Fortner, L. Stutte, N. W. Reay, R. L. McCarthy, H. L. Melanson, N. Parua, V.V. Abramov, M. Jaffré, Arnaud Duperrin, Alberto Santoro, M. Diesburg, Nicholas John Hadley, C. Hebert, Sebastian Grinstein, N. K. Mondal, J. Warchol, H. T. Diehl, T. A. Bolton, C. Han, A.S. Dyshkant, Arnaud Lucotte, Jong-Sung Yu, Alexander Kupco, G. D. Alexeev, Flera Rizatdinova, D. Whiteson, A. V. Kostritskiy, D. Mihalcea, W. Kahl, A. Boehnlein, M. Bhattacharjee, S. Blessing, P. Rubinov, K. Gounder, Sissel Hansen, David H. Adams, Alice Bean, P. M. Tuts, V. E. Kuznetsov, Sarah Catherine Eno, T. Rockwell, Iain Alexander Bertram, H. E. Fisk, Scott Snyder, F. Fleuret, M. Merkin, Randy Ruchti, M. A. Strang, Jing Li, Ariel Schwartzman, Melissa Ridel, F. Canelli, R. Kehoe, D. A. Stoyanova, A. S. Turcot, Michael Rijssenbeek, S. N. Gurzhiev, T. G. Trippe, Z. Zhou, J. Solomon, L. Duflot, M. Strovink, Emanuela Barberis, Robert Hirosky, Volker Buescher, Shuichi Kunori, Raymond Brock, Boaz Klima, Elizabeth Gallas, T. McMahon, R. Beuselinck, F. Nang, Vasken Hagopian, Christophe Royon, A. M. Kalinin, G. Eppley, Heriberto Castilla-Valdez, V. Vaniev, Richard B. Lipton, H. Weerts, N.V. Mokhov, Z. M. Wang, M. I. Martin, J. Ellison, A. K.A. Maciel, Sa. Jain, A. Abdesselam, V. Simak, A. Leflat, H. da Motta, S. Willis, M. Gao, Sharon Hagopian, Lev Dudko, F. Villeneuve-Seguier, A. P. Heinson, Pushpalatha C Bhat, P. Padley, G. Gutierrez, Gilvan Alves, J. G.R. Lima, D. Cutts, C. Luo, D. Casey, J. Kotcher, Alexey Volkov, J. M. Hauptman, Cecilia Elena Gerber, H. D. Wahl, D. Bauer, V. S. Narasimham, L. Groer, Wagner Carvalho, Mitchell Wayne, Sujogya Banerjee, Greg Landsberg, Harald Fox, Viatcheslav Stolin, H. Schellman, J. M. Kohli, K. Papageorgiou, V. V. Babintsev, G. Ginther, V. N. Evdokimov, R. E. Hall, M. Zanabria, M. H.G. Souza, A. S. Ito, Tulika Bose, N. Graf, Michael Begel, Stefan Grünendahl, Jianming Qian, J. T. Eltzroth, M. A.C. Cummings, A. A. Mayorov, L. Coney, B. Hoeneisen, Y. D. Mutaf, S. Tentindo-Repond, Vipin Bhatnagar, Andrew White, Mossadek Talby, B. Gómez, P. I. Goncharov, H. E. Montgomery, Lee Sawyer, C. Lundstedt, Carlos Avila, J. Snow, H. Haggerty, K. Soustruznik, Christos Leonidopoulos, Yu-tin Huang, S. Krzywdzinski, R. Partridge, X. Zhang, Shashikant Dugad, K. Genser, G. Briskin, Jeffrey F. Krane, R. Jesik, Sabine Crépé-Renaudin, Philip Baringer, A. Baden, G. C. Blazey, J. Womersley, A. Goussiou, S. Baffioni, K. A. Johns, C. Miao, B. Olivier, R. Yamada, V. L. Malyshev, Nikos Varelas, B. M. Sabirov, Andrei Nomerotski, Bing Zhou, E. G. Zverev, H. S. Mao, B. G. Pope, D. Karmanov, R. K. Shivpuri, John Hobbs, S. J. De Jong, S.A. Kahn, M. B. Przybycien, A. Zylberstejn, F. Lehner, D. R. Claes, Ia Iashvili, J. Barreto, B. Kothari, T. Yasuda, M. Demarteau, Mary Beth Adams, S. Doulas, D. Buchholz, Howard Gordon, Elizaveta Shabalina, Kaushik De, R. Piegaia, H. Greenlee, James C. Green, Neeti Parashar, Florian Beaudette, Marvin Johnson, P. A. Rapidis, M. Zielinski, A. Jonckheere, A. V. Kozelov, S. M. Tripathi, E. Kajfasz, Alexander Belyaev, Suyong Choi, A. P. Vorobiev, Stephan Linn, S. P. Denisov, Gregory R Snow, D. Hedin, Patrick Slattery, A. Bross, O. Peters, N. Oshima, Meenakshi Narain, K. M. Mauritz, P.F. Ermolov, Daria Zieminska, M. R. Krishnaswamy, R. D. Schamberger, V. S. Burtovoi, A. R. Clark, N. Sotnikova, M. A. Kubantsev, R. J. Genik, Sergey Chekulaev, Gregorio Bernardi, D. Denisov, J. M. Heinmiller, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, R. J. Madaras, G. A. Davis, Serban Protopopescu, V. A. Bezzubov, J. P. Negret, M. Sosebee, A. Alton, R. P. Smith, Freya Blekman, Andrew Brandt, R. Engelmann, Michael Shupe, E. A. Kozlovsky, H.E. Miettinen, Michael Hildreth, J. Estrada, K. M. Chan, Y. A. Yatsunenko, Harrison Prosper, S. Desai, T. Nunnemann, B. Baldin, W. M. Lee, A. Kharchilava, Sergey Kuleshov, Victor Daniel Elvira, V. Zutshi, D. Shpakov, N. I. Bojko, D. O'Neil, J. N. Butler, P. D. Grannis, Michael A. Strauss, Y. Kulik, Suman Bala Beri, A. Juste, B. Connolly, D. A. Wijngaarden, K. Bos, D. Edmunds, Andre Sznajder, Yuri Gershtein, P. Krivkova, and L. Babukhadia

Subjects
Physics, Diffraction, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Scattering, Detector, Sigma, HERA, 01 natural sciences, Nuclear physics, W and Z bosons, biological sciences, 0103 physical sciences, bacteria, Rapidity, 010306 general physics, Boson
Abstract

Using the DO detector, we have observed events produced in (p) over barp collisions that contain W or Z bosons in conjunction with very little energy deposition ("rapidity gaps") in large forward regions of the detector. The fraction of W boson events with a rapidity gap (a signature for diffraction) is 0.89 +/- (0.19)(0.17)% and the probability that the non-diffractive background fluctuated to yield the observed diffractive signal is 3 x 10(-14), corresponding to a significance of 7.5 sigma. The Z boson sample has a gap fraction of 1.44 +/- (0.61)(0.52)%, with a significance of 4.4 sigma. The diffractive events have very similar properties to the more common non-diffractive component. (C) 2003 Elsevier B.V. All rights reserved.

Published
2016

5. Measurement of the high-mass Drell-Yan cross section and limits on quark-electron compositeness scales

Author

S. A. Jerger, W. G. Cobau, M. I. Martin, R. L. McCarthy, J. McDonald, B. Baldin, C. Klopfenstein, S. Krzywdzinski, Philip Baringer, M. Abolins, Y. Ducros, D. Norman, A.K. Gupta, W. E. Cooper, T. Joffe-Minor, P. Mooney, Peter Nemethy, L. Lueking, M. Roco, A. Zylberstejn, H. T. Diehl, L. Magaña-Mendoza, P. Yamin, E. Smith, H. Singh, C. Murphy, T. Heuring, R. Hernández-Montoya, P. Ermolov, M. Merkin, Y. Kulik, T. McKibben, E. Shabalina, Z. Zhou, J. Solomon, B. May, K. Del Signore, Matthew Jones, G. Eppley, Sergey Kuleshov, S. Protopopescu, Victor Daniel Elvira, H. da Motta, J. Yu, S. Grünendahl, S. Mani, N. Sotnikova, J. Ellison, A. K.A. Maciel, Elizabeth Gallas, H. Weerts, M. Bhattacharjee, B. Gobbi, Alexander Vorobiev, Hiroaki Aihara, A. Bross, J. Krane, R. Jesik, Jasvinder A. Singh, D. Koltick, D. Zieminska, S. Fuess, R. Madden, J. Bantly, Raymond Brock, Boaz Klima, Richard Breedon, H. Greenlee, T. G. Trippe, V. Gavrilov, Rajendran Raja, R. W. Stephens, G. Gutierrez, Peter W. Draper, S. Youssef, Pm Tuts, Sharon Hagopian, G. Guglielmo, A. Sanchez-Hernandez, Brad Abbott, T. McMahon, Robert Kehoe, David Cutts, P. I. Goncharov, S. Willis, H. E. Fisk, Sergey Denisov, Robert Hirosky, B. Zhang, P. Gartung, J. M. Hauptman, J. M. Guida, D. Hedin, L. Babukhadia, Cecilia Elena Gerber, E. Oltman, M. Sosebee, Pushpalatha C Bhat, P. Padley, N.V. Mokhov, Alexey Volkov, Stephen Wimpenny, V. V. Babintsev, J. McKinley, Y. M. Park, C. Miao, K. Gounder, Andrew Brandt, T. Marshall, R. Engelmann, S. Feher, Andrew White, V. N. Evdokimov, Gervasio Gomez, E. A. Kozlovsky, W. Y. Chen, Eunil Won, P. Bloom, V. A. Bezzubov, J. P. Negret, B. Lauer, R. P. Smith, A. N. Galyaev, G. E. Forden, A. P. Heinson, P. Yepes, Jianming Qian, James H Cochran, J. A. Wightman, M. A.C. Cummings, H.E. Miettinen, N. K. Mondal, A. Zieminski, Y. Zhou, Mitchell Wayne, F. Stichelbaut, B. Hoeneisen, N. I. Bojko, A. Boehnlein, Michael Shupe, V. S. Narasimham, B. G. Pope, R. E. Hall, J. L. González Solís, Z. Casilum, Darien Wood, H. Schellman, J. M. Kohli, D. Vititoe, C. K. Jung, V. Stolin, Nicholas John Hadley, Tong Hu, H. L. Melanson, P. Z. Quintas, H. E. Montgomery, A. V. Kozelov, M. L. Stevenson, R. J. Genik, A. A. Mayorov, A. L. Lyon, Shuichi Kunori, A. V. Kotwal, Harrison Prosper, R. Snihur, J. Snow, Daniel R Claes, D. Fein, M. Fortner, A. Jonckheere, H. D. Wahl, Winston Ko, S. Y. Jun, T. L.T. Thomas, S. Blessing, M. K. Fatyga, Scott Snyder, R. Markeloff, J. H. Christenson, E. G. Zverev, V. Vaniev, J. S. Hoftun, K. Davis, J. N. Butler, D. Denisov, Steve Reucroft, R. K. Shivpuri, S.A. Kahn, S. M. Chang, Don Lincoln, Erich Varnes, Li Jingyuan, Daniel John Karmgard, P. D. Grannis, H. Piekarz, F. Lobkowicz, P. Grudberg, J. F. Bartlett, A. Goussiou, C. Shaffer, M. Demarteau, D. Cullen-Vidal, K. Genser, J. Thompson, Andre Sznajder, B. Gómez, N. N. Biswas, M. Tartaglia, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, Z. H. Zhu, Z. Wu, Yuri Gershtein, K. Streets, Vipin Bhatnagar, D. Shpakov, M. D. Peters, Kaushik De, Shashikant Dugad, R. D. Schamberger, Meenakshi Narain, R. Partridge, K. M. Mauritz, Young-Sang Yu, J. Warchol, L. T. Goss, L. Oesch, P. Hanlet, J. V. D. Wirjawan, S. Chopra, G. Finocchiaro, V. Oguri, A. Narayanan, H. S. Mao, G. Wang, Alberto Santoro, J. G.R. Lima, G. Kalbfleisch, D. L. Adams, A. V. Kostritskiy, T. Fahland, D. Edmunds, Dhiman Chakraborty, M. H.G. Souza, Michael A. Strauss, Sissel Hansen, B. Gibbard, Kenneth Johns, Stephan Linn, V. S. Burtovoi, J. Sculli, M. Diesburg, C. Boswell, E. Flattum, R. Yamada, L. Coney, J. D. Hobbs, M. R. Krishnaswamy, Ricardo Piegaia, B. Pawlik, N. Oshima, Nikos Varelas, Suman Bala Beri, D. Casey, J. Kotcher, O. I. Dahl, G. Steinbrück, J. Linnemann, Sun Kee Kim, C. Yoshikawa, N. Graf, E. W. Anderson, Q. Z. Li, Allen Mincer, Sebastian Grinstein, Alexander Belyaev, D. Buchholz, Edilamar Menezes de Oliveira, Y. Pischalnikov, P. Tamburello, Gregory R Snow, F. Hsieh, Heriberto Castilla-Valdez, Ulrich Heintz, H. Jöstlein, D. Owen, J. Tarazi, A. R. Clark, A. Para, Sergey Chekulaev, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, I. Adam, P. Rubinov, K. W. Merritt, V. Manankov, M. Chung, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, K. Yip, A.S. Dyshkant, J. Jaques, Ron Lipton, J. Womersley, Mark Raymond Adams, D. Karmanov, Brajesh C Choudhary, D. P. Stoker, Emanuela Barberis, H. Haggerty, Suyong Choi, Y. Fisyak, Joan A. Guida, G. Di Loreto, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, L. Sawyer, Marvin Johnson, M. Zielinski, R. J. Madaras, T. Yasuda, S. N. Gurzhiev, C. Cretsinger, J. Perkins, Alexander Leflat, M. Strovink, Gilvan Alves, K. S. Hahn, Wagner Carvalho, Greg Landsberg, Sw. Banerjee, T. L. Geld, M. Paterno, A. Baden, G. C. Blazey, S. C. Loken, N. Parua, V.V. Abramov, S. H. Ahn, F. Landry, John Rutherfoord, D. A. Stoyanova, Arnaud Lucotte, F. Borcherding, N. Amos, Randy Ruchti, Miguel Mostafa, C. S. Mishra, M. M. Baarmand, Sarah Catherine Eno, Vasken Hagopian, F. Nang, Lev Dudko, A. S. Ito, Gordon Watts, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, and J. T. White

Subjects
Quark, Physics, Particle physics, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, Scale (descriptive set theory), Electron, High Energy Physics - Experiment, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), Cross section (physics), High mass, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment
Abstract

We present a measurement of the Drell-Yan cross section at high dielectron invariant mass using 120/pb of data collected in pbar-p collisions at sqrt(s) = 1.8 TeV by the D0 collaboration during 1992-96. No deviation from standard model expectations is observed. We use the data to set limits on the energy scale of quark-electron compositeness with common constituents. The 95% confidence level lower limits on the compositeness scale vary between 3.3 TeV and 6.1 TeV depending on the assumed form of the effective contact interaction., 6 pages, 2 figures, submitted to PRL

Published
2016

6. Search for large extra dimensions in dielectron and diphoton production

Author

B. May, Emanuela Barberis, R. J. Madaras, K. Streets, Vipin Bhatnagar, H. Weerts, T. Heuring, S. A. Jerger, Bobby Samir Acharya, H. A. Neal, R. Snihur, Elemer Nagy, Anurag Gupta, A. S. Turcot, A. A. Mayorov, Y. Kulik, Jasvinder A. Singh, Wendy Taylor, A. Patwa, K. M. Mauritz, L. T. Goss, H. C. Shankar, F. Borcherding, V. Sorín, K. Yip, S. Youssef, V. Simak, V. N. Evdokimov, Alexander Leflat, P. Ermolov, M. Strovink, M. Merkin, M. I. Martin, Roger Moore, L. Stutte, Robert Hirosky, Pushpalatha C Bhat, V. S. Burtovoi, A.S. Dyshkant, Robert Kehoe, Gervasio Gomez, David Cutts, V. Zutshi, P. Padley, Alexey Volkov, M. Sosebee, J. Bantly, N.V. Mokhov, A. Bean, Gilvan Alves, Michael Begel, Chris Hays, S. Tentindo-Repond, R. L. McCarthy, H. Haggerty, Raymond Brock, Boaz Klima, J. McDonald, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, L. J. Pan, K. Gounder, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, A. P. Heinson, D. Norman, A. V. Kozelov, Gustaaf Brooijmans, B. Gibbard, J. Thompson, S. R. Hou, L. Sawyer, K. Genser, Philip Baringer, W. E. Cooper, R. Van Kooten, M. A.C. Cummings, S. Willis, F. Nang, Andrew White, P. Grudberg, S. Feher, D. Shpakov, Z. Zhou, J. Solomon, R. Demina, P. Demine, A. Besson, B. Gómez, J. Rha, H. S. Mao, P. Gartung, Andrew Brandt, R. Engelmann, E. A. Kozlovsky, H.E. Miettinen, Z. H. Zhu, E. Popkov, M. R. Krishnaswamy, R. E. Hall, J. L. González Solís, Z. Casilum, V. A. Bezzubov, J. P. Negret, R. P. Smith, Michael Shupe, Y. Fisyak, C. Klopfenstein, M. Chung, Shashikant Dugad, Marvin Johnson, M. Roco, S. Krzywdzinski, B. Hoeneisen, G. Eppley, A. Baden, A. N. Galyaev, K. M. Chan, Dhiman Chakraborty, G. C. Blazey, G. Gutierrez, M. Buehler, H. Zheng, N. W. Reay, S. Grünendahl, Yu-tin Huang, J. Perkins, J. Sculli, M. Diesburg, J. Yu, E. G. Zverev, J. F. Bartlett, A. Goussiou, A. Para, Neeti Parashar, H. da Motta, D. Zieminska, S. Fuess, J. Estrada, Elizabeth Gallas, R. Partridge, T. McMahon, M. Bhattacharjee, R. Gilmartin, N. R. Stanton, V. Stolin, H. E. Montgomery, Sun Kee Kim, V. Buescher, A. Zylberstejn, Sergey Chekulaev, P. Hanlet, D. Coppage, V. S. Narasimham, L. Groer, Thomas G Trippe, F. Lehner, D. K. Cho, Pm Tuts, S. Duensing, J. M. Hauptman, Cecilia Elena Gerber, Orin I. Dahl, John Rutherfoord, R. Jesik, Haiyan Wang, Nikos Varelas, Meenakshi Narain, E. W. Anderson, A. V. Kotwal, Harrison Prosper, B. Knuteson, D. P. Stoker, V. V. Babintsev, B. Pawlik, Sharon Hagopian, Z. Yu, M. Zielinski, E. Shabalina, V. Gavrilov, Daniel R Claes, S.A. Kahn, Kenneth Johns, F. Stichelbaut, G. Ginther, Daniel Whiteson, Alexander Belyaev, S. Desai, Q. Z. Li, Stephen Wimpenny, P. Rubinov, G. A. Davis, K. W. Merritt, Jianming Qian, D. Casey, A. R. Clark, C. S. Mishra, J. Kotcher, T. Fahland, D. Edmunds, N. Sotnikova, Ron Lipton, B. G. Pope, R. J. Genik, M. Demarteau, G. Graham, A. Zieminski, James C. Green, Patrick Slattery, Allen Mincer, G. Briskin, D. Fein, M. Fortner, T. Marshall, D. A. Stoyanova, D. Denisov, V. Manankov, K. S. Hahn, Sebastian Grinstein, J. Womersley, Ricardo Piegaia, Jeffrey F. Krane, N. Graf, T. Yasuda, Don Lincoln, D. Buchholz, Darien Wood, Wagner Carvalho, E. Flattum, R. Yamada, H. D. Wahl, R. D. Schamberger, Greg Landsberg, L. Lueking, Sw. Banerjee, P. W. Balm, Daniel John Karmgard, M. Zanabria, Winston Ko, S. N. Gurzhiev, A. V. Kostritskiy, Mark Raymond Adams, D. Karmanov, Li Jingyuan, S. Negroni, C. Hebert, N. Amos, Heriberto Castilla-Valdez, Nicholas John Hadley, S. Blessing, S. Chopra, P. A. Rapidis, Sissel Hansen, J. T. White, Ariel Schwartzman, O. Peters, M. Paterno, K. Soustruznik, A. Boehnlein, H. L. Melanson, P. Z. Quintas, Ulrich Heintz, U. Bassler, J. V.D. Wirjawan, Scott Snyder, E. Smith, K. Del Signore, L. Coney, H. Jöstlein, Matthew Jones, N. Sen, J. D. Hobbs, J. Snow, J. H. Christenson, A. P. Vorobiev, E. Kajfasz, R. K. Shivpuri, Stephan Linn, David H. Adams, Gregory R Snow, R. A. Sidwell, N. Oshima, P. van Gemmeren, F. Canelli, M. Abolins, H. E. Fisk, S. Doulas, D. Hedin, Alberto Santoro, J. G.R. Lima, C. Lundstedt, Kaushik De, V. E. Kuznetsov, D. Toback, M. A. Kubantsev, R. W. Stephens, Vasken Hagopian, Suyong Choi, Steve Reucroft, E. J. Ramberg, S. M. Tripathi, Z. M. Wang, A. Bross, H. T. Diehl, G. Steinbrück, V. Oguri, H. Singh, Shuichi Kunori, P. Yamin, V. Vaniev, T. Rockwell, Iain Alexander Bertram, G. Di Loreto, Rajendran Raja, Lev Dudko, J. Ellison, A. K.A. Maciel, Gregorio Bernardi, Peter W. Draper, Michael Rijssenbeek, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, Brad Abbott, Sergey Denisov, A. S. Ito, P. I. Goncharov, J. Warchol, C. Miao, B. Olivier, N. K. Mondal, F. Fleuret, Gordon Watts, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, Howard Gordon, K. C. Frame, N. Parua, V.V. Abramov, Arnaud Lucotte, Randy Ruchti, A. Jonckheere, Andre Sznajder, Yuri Gershtein, M. D. Peters, L. Oesch, L. Babukhadia, M. H.G. Souza, D. Mihalcea, B. Connolly, Richard Breedon, H. Greenlee, D. A. Wijngaarden, Michael A. Strauss, Suman Bala Beri, J. Linnemann, A. Juste, J. A. Wightman, N. I. Bojko, R. D. Martin, M. L. Stevenson, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, B. Baldin, Y. Ducros, X. C. Meng, Sergey Kuleshov, S. Protopopescu, Victor Daniel Elvira, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), D0, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and D0 (Tevatron, IHEF, IOP, FNWI)

Subjects
Physics, Particle physics, Photon, Planck scale, 010308 nuclear & particles physics, Detector, FOS: Physical sciences, General Physics and Astronomy, Electron, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), symbols.namesake, Extra dimensions, High Energy Physics - Phenomenology (hep-ph), Angular distribution, 0103 physical sciences, symbols, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Large extra dimension, Production (computer science), High Energy Physics::Experiment, 010306 general physics
Abstract

We report a search for effects of large extra spatial dimensions in ppbar collisions at a center-of-mass energy of 1.8 TeV with the DZero detector, using events containing a pair of electrons or photons. The data are in good agreement with the expected background and do not exhibit evidence for large extra dimensions. We set the most restrictive lower limits to date, at the 95% confidence level, on the effective Planck scale between 1.0 TeV and 1.4 TeV for several formalisms and numbers of extra dimensions., Comment: 6 pages, 2 figures, submitted to Phys. Rev. Lett

Published
2016

7. Comparison of PMTs from three different manufacturers for the CMS-HF forward calorimeter

Author

M. L. Miller, Erhan Gülmez, Ugur Akgun, I. Schmidt, E. W. Anderson, D. Winn, Yasar Onel, and Ahmet S. Ayan

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Physics::Instrumentation and Detectors, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Hadron calorimeter, Calorimeter, Nuclear physics, Optics, Nuclear Energy and Engineering, EMI, Electrical and Electronic Engineering, business, Dark current
Abstract

The builders of the CMS forward hadron calorimeter established a set of specifications for readout PMTs that reflected the physics goals and mechanical needs of the CMS experiment. Three manufacturers, Hamamatsu, Photonis (Philips), and Electron Tubes (EMI), provided candidate PMTs based on these initial requirements. Timing, gain, dark current properties, and single photoelectron spectra of these candidate PMTs were measured. Results show that Hamamatsu PMTs (R7525HA) conform best to the specifications of the Hadron-Forward (HF) Calorimeter.

Published
2004

8. Calibration of a neutron time-of-flight multidetector system for an intensity interferometry experiment

Author

E. W. Anderson, V. Bellini, H. W. Wilschut, Lars Westerberg, VL Kravchuk, Bo Jakobsson, Roberta Ghetti, P Nadel-Turonski, C. M. Sutera, Vladimir Avdeichikov, S. Kopecky, Sijtze Brandenburg, Nicola Colonna, G. Tagliente, M. L. Sperduto, J Helgesson, Pavel Golubev, and Damage and Repair in Cancer Development and Cancer Treatment (DARE)

Subjects
Physics, Nuclear and High Energy Physics, time-of-flight method, Cyclotron, Scintillator, calibration, neutron detection, Neutron temperature, law.invention, Nuclear physics, Interferometry, Time of flight, SCINTILLATOR, law, Phoswich detector, Neutron detection, Neutron, Nuclear Experiment, DETECTION EFFICIENCY, Instrumentation, liquid scintillator
Abstract

We present the details of an experiment on light particle interferometry. In particular, we focus on a time-of-flight technique which uses a cyclotron RF signal as a start and a liquid scintillator time signal as a stop, to measure neutron energy in the range of En approximate to 1.8-150 MeV. This dynamic range (up to 300 ns) is much larger than the beam bunch separation (54 ns) of the AGOR cyclotron (KVI). However, the problem of a short burst period is overcome by using the time information obtained from a fast projectile fragment phoswich detector. The complete analysis procedure to extract the final neutron kinetic energy spectra, is discussed. (C) 2003 Elsevier B.V. All rights reserved.

Published
2004

9. Search for 3- and 4-body decays of the scalar top quark in pp- collisions at root s = 1.8 TeV

Author

N. I. Bojko, D. O'Neil, Andrew White, A. Goussiou, A. Baden, Andrei Nomerotski, G. C. Blazey, John Hobbs, J. N. Butler, P. D. Grannis, J. Barreto, M. Buehler, Alexander Belyaev, S. Chopra, Ariel Schwartzman, Melissa Ridel, R. Kehoe, R. Yamada, Patrick Slattery, A. Khanov, N. Parua, V.V. Abramov, M. Jaffré, M. Abolins, H. L. Melanson, Elemer Nagy, N. R. Stanton, L. Duflot, E. W. Anderson, Arnaud Lucotte, C. Luo, Mary Beth Adams, Alexander Kupco, W. Kahl, S. Youssef, J. M. Hauptman, Cecilia Elena Gerber, Ulrich Heintz, D. Edmunds, James C. Green, N. K. Mondal, R. K. Shivpuri, D. Cutts, H. T. Diehl, T. A. Bolton, N.V. Mokhov, Marvin Johnson, H. Jöstlein, Q. Z. Li, Andre Sznajder, D. R. Claes, Frank Filthaut, Randy Ruchti, V. Zutshi, Wagner Carvalho, N. Sotnikova, R. J. Genik, M. I. Martin, Yuri Gershtein, Greg Landsberg, D. Whiteson, A. Boehnlein, A. V. Kozelov, V. V. Babintsev, David H. Adams, M. Diesburg, G. Ginther, Alice Bean, S. Duensing, Wendy Taylor, A. Patwa, P. Krivkova, D. Hedin, Roger Moore, S. Doulas, Sebastian Grinstein, K. Soustruznik, Shuichi Kunori, A. P. Heinson, A. N. Galyaev, V. Vaniev, L. Babukhadia, D. Shpakov, J. Ellison, A. K.A. Maciel, Sa. Jain, S. Fuess, Jianming Qian, A. Abdesselam, V. A. Bezzubov, S. J. De Jong, A. V. Kostritskiy, Michael A. Strauss, Kaushik De, F. Canelli, Volker Buescher, Vladimir Gavrilov, J. P. Negret, P. Demine, R. P. Smith, Gordon Watts, V. Sirotenko, H. Zheng, T. Nunnemann, B. Baldin, D. Coppage, F. Borcherding, D. K. Cho, Y. Arnoud, G. Sajot, D. A. Stoyanova, A. S. Turcot, B. Kothari, Vipin Bhatnagar, K. Gounder, O. V. Eroshin, Y. Song, G. Briskin, M. Strovink, Michael Shupe, Sissel Hansen, Michael Hildreth, S. M. Tripathi, Y. Kulik, R. E. Hall, P. I. Goncharov, R. Illingworth, L. Lueking, R. Partridge, X. Zhang, W. E. Cooper, J. Estrada, A. Leflat, Jeffrey F. Krane, N. A. Naumann, L. Coney, Suman Bala Beri, S. Baffioni, W. M. Lee, A. Kharchilava, Christos Leonidopoulos, Sarah Catherine Eno, S. N. Ahmed, S. Reucroft, Y. A. Yatsunenko, D. Chakraborty, Stephen Wimpenny, Harrison Prosper, Michael Begel, T. Marshall, Sergey Kuleshov, Christophe Royon, C. Miao, B. Olivier, Victor Daniel Elvira, V. L. Malyshev, B. M. Sabirov, A. Juste, F. Nang, E. Popkov, Richard B. Lipton, J. Womersley, Arnaud Duperrin, Heriberto Castilla-Valdez, S. Desai, V. M. Abazov, H. D. Wahl, D. Bauer, H. S. Mao, D. Fein, B. Connolly, Richard Breedon, M. Zanabria, Winston Ko, Pushpalatha C Bhat, U. Bassler, Jong-Sung Yu, V. Simak, C. Han, Don Lincoln, P. W. Balm, P. Padley, S. Tentindo-Repond, D. Karmanov, Alexey Volkov, A. Stone, Daniel John Karmgard, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, C. Hebert, M. Merkin, D. A. Wijngaarden, T. Yasuda, Mitchell Wayne, H. Schellman, J. M. Kohli, Ia Iashvili, T. C. Bacon, D. Mihalcea, E. Kajfasz, K. Bos, Zeno Dixon Greenwood, Stefan Grünendahl, Alberto Santoro, Philip Baringer, Raymond Brock, V. N. Evdokimov, M. A.C. Cummings, Boaz Klima, Bobby Samir Acharya, H. A. Neal, Jing Li, S. Banerjee, Mossadek Talby, B. Gómez, R. Beuselinck, D. Casey, J. T. Linnemann, V. Sorín, P. M. Tuts, V. E. Kuznetsov, P. Rubinov, K. Yip, S. Krzywdzinski, J. Kotcher, Shashikant Dugad, Harald Fox, D. P. Stoker, B. G. Pope, S. Willis, L. Stutte, A.S. Dyshkant, B. Hoeneisen, Lee Sawyer, N. Graf, Y. D. Mutaf, Robert Hirosky, H. E. Fisk, A. Zylberstejn, F. Fleuret, Elizaveta Shabalina, A. M. Kalinin, F. Lehner, H. Greenlee, Z. Zhou, J. Solomon, R. Demina, A. Bross, O. Peters, G. A. Davis, Elizabeth Gallas, T. McMahon, Serban Protopopescu, G. Gutierrez, Gilvan Alves, V. S. Narasimham, L. Groer, A. A. Mayorov, J. Snow, M. Gao, J. T. Eltzroth, S.A. Kahn, R. Jesik, K. A. Johns, M. Demarteau, G. Bernardi, V. Oguri, Gustaaf Brooijmans, J. Warchol, P. Yamin, G. D. Alexeev, Flera Rizatdinova, P. A. Rapidis, A. Jonckheere, A. P. Vorobiev, Stephan Linn, M. Sosebee, N. Oshima, Daria Zieminska, R. D. Schamberger, M. A. Kubantsev, Freya Blekman, Andrew Brandt, R. Engelmann, E. A. Kozlovsky, H.E. Miettinen, E. G. Zverev, Meenakshi Narain, G. Eppley, H. da Motta, J. G.R. Lima, S. N. Gurzhiev, A. S. Ito, Viatcheslav Stolin, C. Lundstedt, Carlos Avila, Sabine Crépé-Renaudin, Neeti Parashar, R. L. McCarthy, M. Zielinski, Suyong Choi, D. Denisov, J. M. Heinmiller, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, M. H.G. Souza, H. E. Montgomery, R. Van Kooten, A. Besson, P.F. Ermolov, A. Zieminski, V. S. Burtovoi, R. A. Sidwell, R. J. Madaras, D. Buchholz, Florian Beaudette, J. Huang, Gregory R Snow, G. Steinbrück, K. Genser, M. B. Przybycien, Rajendran Raja, Phillip Gutierrez, M. A. Strang, Emanuela Barberis, Vasken Hagopian, H. Weerts, Z. M. Wang, Brad Abbott, Lev Dudko, F. Villeneuve-Seguier, Tulika Bose, Pierre Petroff, H. Haggerty, M. Fortner, N. W. Reay, S. Fu, Q. Xu, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, M. Bhattacharjee, T. G. Trippe, Howard Gordon, Yu-tin Huang, Nikos Varelas, Bing Zhou, Sharon Hagopian, K. Papageorgiou, S. P. Denisov, M. R. Krishnaswamy, R. Piegaia, A. R. Clark, A. Alton, Sergey Chekulaev, K. M. Chan, K. W. Merritt, J. F. Bartlett, V. Manankov, and D0 (Tevatron, IHEF, IOP, FNWI)

Subjects
Quark, Physics, Particle physics, Top quark, Nuclear and High Energy Physics, Muon, 010308 nuclear & particles physics, Scalar (mathematics), High Energy Physics::Phenomenology, 01 natural sciences, Lightest Supersymmetric Particle, Nuclear physics, 0103 physical sciences, Neutralino, High Energy Physics::Experiment, Fermilab, 010306 general physics, Minimal Supersymmetric Standard Model
Abstract

We have searched for the signature of 3- and 4-body decays of pair-produced scalar top quarks (stop) in the inclusive final state containing an electron, a muon, and significant missing transverse energy using a sample of p p events corresponding to 108.3 pb−1 of data collected with the DO detector at Fermilab. The search is done in the framework of the minimal supersymmetric standard model assuming that the neutralino ( χ 0 1 ) is the lightest supersymmetric particle and is stable. No evidence for a signal is found and we derive cross-section upper limits as a function of stop (t) and neutralino masses in different decay scenarios leading to the blν χ 0 1 final state.

Published
2004

10. Hard single diffraction in p̄p collisions at s=630 and 1800 GeV

Author

A. N. Galyaev, D. K. Cho, Y. Arnoud, M. Merkin, R. Illingworth, Raymond Brock, Boaz Klima, R. Beuselinck, S. Willis, W. E. Cooper, S. Duensing, G. Eppley, Arnaud Duperrin, M. A. Strang, S. J. De Jong, Jong-Sung Yu, C. S. Mishra, S. Fu, B. Kothari, N.V. Mokhov, H. da Motta, J. G.R. Lima, M. Sosebee, V. M. Abazov, M. I. Martin, K. W. Merritt, Elemer Nagy, Vasken Hagopian, L. Lueking, H. Weerts, W. Kahl, Andrew White, J. F. Bartlett, A. P. Heinson, V. Manankov, E. W. Anderson, Q. Xu, Lev Dudko, T. G. Trippe, A. S. Ito, P. Pétroff, E. Kajfasz, E. Popkov, R. E. Hall, B. Pawlik, Q. Z. Li, Sharon Hagopian, K. Papageorgiou, Wendy Taylor, T. Rockwell, Iain Alexander Bertram, N. Parua, A. Goussiou, Roger Moore, S. Fuess, Michael Rijssenbeek, D. Mihalcea, D. Casey, S. Krzywdzinski, Sebastian Grinstein, B. Olivier, Neeti Parashar, J. Kotcher, A. Patwa, Anurag Gupta, R. Van Kooten, Z. M. Wang, L. Babukhadia, Vladimir Gavrilov, R. Piegaia, V. Oguri, Gordon Watts, R. Snihur, P. M. Tuts, V. E. Kuznetsov, Harald Fox, A. Zylberstejn, Shuichi Kunori, N. Graf, R. W. Stephens, Robert Hirosky, A. V. Kostritskiy, V. Sirotenko, Andrew Brandt, A. Abdesselam, A. M. Kalinin, H. E. Fisk, L. J. Pan, Z. Zhou, J. Solomon, Vipin Bhatnagar, K. Gounder, A. Alton, Andrei Nomerotski, John Hobbs, F. Lehner, H. Greenlee, V. N. Evdokimov, Gustaaf Brooijmans, B. M. Sabirov, O. V. Eroshin, Y. Song, Phillip Gutierrez, A. Bross, Sissel Hansen, T. Nunnemann, B. Baldin, E. A. Kozlovsky, H.E. Miettinen, D. Edmunds, D. Bauer, V. Vaniev, Howard Gordon, K. C. Frame, Chris Hays, M. Zielinski, R. Partridge, X. Zhang, J. Barreto, A. Khanov, R. Demina, A. Zieminski, G. A. Davis, L. Coney, G. Gutierrez, V. A. Bezzubov, V.V. Abramov, N. Sen, R. Gilmartin, Serban Protopopescu, A. Besson, J. P. Negret, Y. Ducros, V. L. Malyshev, Gilvan Alves, Heriberto Castilla-Valdez, R. L. McCarthy, J. Warchol, Andre Sznajder, R. P. Smith, M. Gao, M. Bhattacharjee, H. S. Mao, S. P. Denisov, W. M. Lee, A. Kharchilava, B. G. Pope, P. Demine, V. S. Narasimham, L. Groer, Yuri Gershtein, J. M. Hauptman, Cecilia Elena Gerber, Arnaud Lucotte, Michael Shupe, Michael Hildreth, K. M. Chan, Dhiman Chakraborty, T. Fahland, H. Zheng, S. N. Gurzhiev, M. R. Krishnaswamy, D. Fein, V. Simak, Alexander Kupco, J. Estrada, Sergey Kuleshov, E. G. Zverev, V. V. Babintsev, D. Coppage, B. Abbott, G. Ginther, A. A. Mayorov, Don Lincoln, P. Padley, V. Zutshi, Alexey Volkov, Y. A. Yatsunenko, P. Krivkova, A. R. Clark, N. Sotnikova, Jianming Qian, P. W. Balm, A. Stone, Daniel John Karmgard, A. V. Kotwal, Harrison Prosper, M. Roco, R. J. Genik, Elizabeth Gallas, T. McMahon, Randy Ruchti, Mitchell Wayne, H. Schellman, J. M. Kohli, Victor Daniel Elvira, Sergey Chekulaev, J. Snow, C. Hebert, G. Briskin, H. L. Melanson, N. A. Naumann, Stefan Grünendahl, R. A. Sidwell, E. Flattum, Christophe Royon, Jeffrey F. Krane, Viatcheslav Stolin, N. I. Bojko, Mossadek Talby, B. Gómez, Ulrich Heintz, Marc M Baarmand, S. Reucroft, J. H. Christenson, Meenakshi Narain, D. O'Neil, S. Chopra, H. D. Wahl, Elizaveta Shabalina, Shashikant Dugad, C. Lundstedt, M. Strovink, David H. Adams, M. Zanabria, Winston Ko, Carlos Avila, Jing Li, Michael A. Strauss, Alice Bean, Sabine Crépé-Renaudin, H. Jöstlein, M. Jaffré, Ariel Schwartzman, E. Smith, U. Bassler, F. Blekman, Suyong Choi, O. Peters, F. Canelli, Volker Buescher, J. T. Eltzroth, Melissa Ridel, R. Kehoe, J. T. White, G. Steinbrück, J. N. Butler, P. D. Grannis, R. Jesik, Laurent Duflot, T. Yasuda, Frank Filthaut, D. Hedin, Rajendran Raja, K. A. Johns, Alberto Santoro, Seong Keun Kim, M. Diesburg, A. Leflat, S. Youssef, P. Rubinov, Gregorio Bernardi, Suman Bala Beri, D. Denisov, J. M. Heinmiller, Srinivasan Rajagopalan, D. Shpakov, A. Juste, Bobby Samir Acharya, H. A. Neal, S. Tentindo-Repond, Hal Evans, Thomas Ferbel, T. C. Bacon, J. T. Linnemann, V. Sorín, B. Connolly, K. Yip, Richard Breedon, D. P. Stoker, L. Stutte, A.S. Dyshkant, Alexander Belyaev, Philip Baringer, Patrick Slattery, D. A. Stoyanova, A. S. Turcot, S. Banerjee, Zeno Dixon Greenwood, D. A. Wijngaarden, Michael Begel, K. Bos, K. Genser, M. Buehler, M. Chung, R. D. Schamberger, Y. Fisyak, N. R. Stanton, Christos Leonidopoulos, J. Womersley, Marvin Johnson, M. Abolins, D. Karmanov, Z. Casilum, Ia Iashvili, A. V. Kozelov, N. K. Mondal, H. T. Diehl, T. A. Bolton, H. Singh, D. Whiteson, A. Boehnlein, J. Ellison, A. K.A. Maciel, Sa. Jain, P. I. Goncharov, C. Miao, Pushpalatha C Bhat, M. H.G. Souza, H. E. Montgomery, M. A.C. Cummings, B. Hoeneisen, D. Buchholz, Lee Sawyer, Gregory R Snow, P.F. Ermolov, B. Knuteson, V. S. Burtovoi, R. J. Madaras, Haiyan Wang, S.A. Kahn, M. Demarteau, F. Borcherding, S. Desai, G. Sajot, E. J. Ramberg, P. Yamin, G. D. Alexeev, Flera Rizatdinova, Miguel Mostafa, Sarah Catherine Eno, P. A. Rapidis, François Fleuret, F. Nang, A. Jonckheere, A. P. Vorobiev, Richard B. Lipton, F. Villeneuve-Seguier, Stephan Linn, A. Baden, N. Oshima, Daria Zieminska, G. C. Blazey, M. A. Kubantsev, Stephen Wimpenny, T. Marshall, R. Yamada, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. K. Shivpuri, John Rutherfoord, D. R. Claes, C. Luo, Mary Beth Adams, S. Doulas, James C. Green, Kaushik De, Emanuela Barberis, D. Cutts, Wagner Carvalho, Greg Landsberg, L. T. Goss, Charles Leggett, Y. Kulik, M. Paterno, K. Soustruznik, Tulika Bose, H. Haggerty, F. Beaudette, M. B. Przybycien, S. M. Tripathi, R. Engelmann, S. N. Ahmed, M. Fortner, N. W. Reay, Y. D. Mutaf, Yu-tin Huang, Nikos Varelas, Bing Zhou, and L. S. Vertogradov

Subjects
Diffraction, Physics, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Detector, Empty set, HERA, Jet (particle physics), 01 natural sciences, Nuclear physics, Pomeron, 0103 physical sciences, Momentum loss, Rapidity, High Energy Physics::Experiment, 010306 general physics
Abstract

Using the D empty set detector, we have studied events produced in (p) over barp collisions that contain large forward regions with very little energy deposition ("rapidity gaps") and concurrent jet production at center-of-mass energies of roots = 630 and 1800 GeV. The fraction of events with forward or central jets associated with rapidity gaps is compared to predictions for hard diffraction. We also extract the momentum loss for scattered protons in such processes. (C) 2002 Elsevier Science B.V. All rights reserved.

Published
2002
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11. Evidence for hadronic deconfinement in p̄–p collisions at 1.8 TeV

Author

T. Alexopoulos, R. P. Scharenberg, E. W. Anderson, F. Turkot, K. S. Nelson, W. D. Walker, N.T. Porile, A. T. Bujak, A. S. Hirsch, A. R. Erwin, D.D. Carmony, J. Warchol, L.J. Gutay, B. Stringfellow, B. K. Srivastava, and Seog Oh

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, Degrees of freedom (physics and chemistry), Deconfinement, Charged particle, Hadronization, Pseudorapidity, High Energy Physics::Experiment, Nuclear Experiment, Excitation, Bar (unit)
Abstract

We have measured deconfined hadronic volumes, $4.4 < V < 13.0$ fm$^{3}$, produced by a one dimensional (1D) expansion. These volumes are directly proportional to the charged particle pseudorapidity densities $6.75 < dN_{c}/d\eta < 20.2$. The hadronization temperature is $T = 179.5 \pm 5$ (syst) MeV. Using Bjorken's 1D model,the hadronization energy density is $\epsilon_{F} = 1.10 \pm 0.26$ (stat) GeV/fm$^{3}$ corresponding to an excitation of $24.8 \pm 6.2$ (stat) quark-gluon degrees of freedom.

Published
2002
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12. Quasi-Model-Independent Search for New HighpTPhysics at D0

Author

P. Demine, S. Youssef, V. Zutshi, K. S. Hahn, D. Cutts, D. Shpakov, H. Zheng, P. Hanlet, S. Krzywdzinski, Wagner Carvalho, Greg Landsberg, Andrew White, T. Nunnemann, B. Baldin, D. Coppage, Y. Ducros, X. C. Meng, J. A. Wightman, N. I. Bojko, A. Zylberstejn, R. D. Martin, Sergey Kuleshov, Victor Daniel Elvira, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, M. Paterno, K. Soustruznik, M. Buehler, Alexander Belyaev, F. Lehner, N. Parua, V.V. Abramov, H. Greenlee, F. Borcherding, P. Yamin, Robert Hirosky, M. Jaffré, Patrick Slattery, S. Reucroft, S. Desai, G. Steinbrück, V. Oguri, E. G. Zverev, D. Bauer, Miguel Mostafa, R. Snihur, John Hobbs, N. R. Stanton, Rajendran Raja, M. M. Baarmand, H. L. Melanson, P. Z. Quintas, Erik Ramberg, T. McMahon, G. Eppley, H. D. Wahl, Arnaud Lucotte, Sarah Catherine Eno, M. Fortner, N. W. Reay, A. Bross, O. Peters, G. A. Davis, Serban Protopopescu, F. Nang, J. H. Christenson, Brad Abbott, Meenakshi Narain, Pierre Petroff, J. Perkins, Yu-tin Huang, Gustaaf Brooijmans, J. Warchol, Ulrich Heintz, H. Jöstlein, M. Zanabria, Winston Ko, Nikos Varelas, Randy Ruchti, R. K. Shivpuri, Frank Filthaut, A. N. Galyaev, D. Fein, M. Diesburg, G. Gutierrez, Gilvan Alves, V. S. Narasimham, L. Groer, Thomas G Trippe, H. da Motta, J. G.R. Lima, Bobby Samir Acharya, H. A. Neal, Howard Gordon, David H. Adams, K. C. Frame, H. E. Fisk, D. K. Cho, Peter W. Draper, Pushpalatha C Bhat, S. N. Gurzhiev, A. Baden, C. S. Mishra, R. Jesik, G. C. Blazey, T. Fahland, R. Illingworth, P. van Gemmeren, D. P. Stoker, K. Gounder, L. J. Pan, R. Yamada, W. E. Cooper, S. Duensing, Don Lincoln, F. Canelli, P. W. Balm, S. Doulas, J. Snow, Daniel R Claes, Vasken Hagopian, M. A.C. Cummings, A. S. Ito, P. I. Goncharov, H. Weerts, T. Yasuda, Z. M. Wang, Emanuela Barberis, Wendy Taylor, Vipin Bhatnagar, Daniel John Karmgard, K. M. Chan, M. Sosebee, Dhiman Chakraborty, Kaushik De, D. A. Stoyanova, A. S. Turcot, A. V. Kostritskiy, C. Hebert, S. P. Denisov, John Rutherfoord, Lev Dudko, J. T. Linnemann, V. Sorín, B. Hoeneisen, J. V.D. Wirjawan, Lee Sawyer, A. Patwa, Allan G Clark, Roger Moore, L. Lueking, R. Partridge, E. Flattum, M. R. Krishnaswamy, Gervasio Gomez, C. Luo, Mary Beth Adams, C. Miao, Viatcheslav Stolin, B. Olivier, E. Kajfasz, Sissel Hansen, K. Yip, E. Popkov, B. G. Pope, M. Bhattacharjee, Z. Zhou, J. Solomon, Michael Begel, K. Del Signore, Matthew Jones, S. Chopra, S. Fuess, J. Rha, C. Lundstedt, A. Para, L. T. Goss, M. H.G. Souza, Charles Leggett, James C. Green, Elizabeth Gallas, Haiyan Wang, F. Fleuret, H. S. Mao, Sergey Chekulaev, S.A. Kahn, Andrew Brandt, Sharon Hagopian, R. Engelmann, M. Merkin, L. Stutte, Jinhong Yu, Ariel Schwartzman, E. Smith, R. Van Kooten, Vladimir Gavrilov, M. Abolins, M. Demarteau, S. M. Tripathi, Jing Li, S. Feher, K. Genser, A. Besson, P. M. Tuts, V. E. Kuznetsov, L. Coney, Y. Fisyak, E. A. Kozlovsky, H.E. Miettinen, Gordon Watts, Melissa Ridel, A.S. Dyshkant, V. Sirotenko, F. Stichelbaut, Heriberto Castilla-Valdez, R. W. Stephens, C. Klopfenstein, K. W. Merritt, Elizaveta Shabalina, L. Duflot, N. Sen, Marvin Johnson, O. V. Eroshin, G. Graham, A. Zieminski, Phillip Gutierrez, K. Papageorgiou, N. K. Mondal, H. T. Diehl, J. F. Bartlett, Stephen Wimpenny, N.V. Mokhov, H. E. Montgomery, H. Singh, V. Manankov, A. V. Kozelov, T. Rockwell, Iain Alexander Bertram, B. Pawlik, J. T. White, A. Boehnlein, Michael Rijssenbeek, K. A. Johns, A. P. Heinson, M. Gao, T. Marshall, R. Piegaia, A. A. Mayorov, Neeti Parashar, P. A. Rapidis, J. Ellison, Raymond Brock, Boaz Klima, S. A. Jerger, V. N. Evdokimov, R. Beuselinck, D. Casey, J. Kotcher, B. Knuteson, R. A. Sidwell, Alexander Leflat, A. Jonckheere, A. Abdesselam, A. P. Vorobiev, Chris Hays, M. Strovink, R. E. Hall, J. L. González Solís, Darien Wood, V. A. Bezzubov, Nicholas John Hadley, J. P. Negret, R. P. Smith, M. Zielinski, N. Sotnikova, Stephan Linn, R. J. Genik, V. Buescher, Z. Casilum, U. Bassler, H. Haggerty, Suyong Choi, A. Bean, Ron Lipton, S. Blessing, D. Norman, N. Graf, M. I. Martin, N. Oshima, Daria Zieminska, Scott Snyder, R. D. Schamberger, Michael Shupe, J. Womersley, Z. Yu, R. L. McCarthy, Daniel Whiteson, E. W. Anderson, M. A. Kubantsev, J. Estrada, S. Willis, R. Gilmartin, S. Tentindo-Repond, G. Di Loreto, J. McDonald, Q. Z. Li, A. V. Kotwal, Harrison Prosper, D. Karmanov, Gregorio Bernardi, D. Denisov, Philip Baringer, M. Roco, S. Negroni, D. Buchholz, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, Alberto Santoro, Sebastian Grinstein, S. Banerjee, Seong Keun Kim, R. J. Madaras, D. Toback, V. Simak, T. C. Bacon, P. Padley, R. Demina, P. Rubinov, J. M. Hauptman, Cecilia Elena Gerber, Alexey Volkov, James H Cochran, V. V. Babintsev, D. Hedin, G. Ginther, A. K.A. Maciel, M. Chung, Anna Goussiou, Jianming Qian, N. Amos, Mitchell Wayne, H. Schellman, J. M. Kohli, G. Briskin, Jeffrey F. Krane, Gregory R Snow, Stefan Grünendahl, J. Thompson, K. M. Mauritz, P.F. Ermolov, S. R. Hou, B. Gómez, V. S. Burtovoi, Shashikant Dugad, Shuichi Kunori, V. Vaniev, B. May, Anurag Gupta, Michael A. Strauss, Jasvinder A. Singh, Suman Bala Beri, T. Heuring, A. Juste, D. Mihalcea, Elemer Nagy, B. Connolly, Richard Breedon, Y. Kulik, D. A. Wijngaarden, D. Edmunds, Andre Sznajder, Yuri Gershtein, M. D. Peters, L. Oesch, and L. Babukhadia

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Tevatron, General Physics and Astronomy, 01 natural sciences, Standard Model, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, Sensitivity (control systems), Electroweak scale, Nuclear Experiment, 010306 general physics
Abstract

We apply a quasi-model-independent strategy ("Sleuth") to search for new high p_T physics in approximately 100 pb^-1 of ppbar collisions at sqrt(s) = 1.8 TeV collected by the DZero experiment during 1992-1996 at the Fermilab Tevatron. We systematically analyze many exclusive final states and demonstrate sensitivity to a variety of models predicting new phenomena at the electroweak scale. No evidence of new high p_T physics is observed.

Published
2001

13. Ratio of Jet Cross Sections ats=630GeV and 1800 GeV

Author

K. M. Mauritz, P.F. Ermolov, D. P. Stoker, V. S. Burtovoi, M. Chung, T. Heuring, M. Bhattacharjee, D. Edmunds, P. A. Rapidis, Sharon Hagopian, A. Jonckheere, A. P. Vorobiev, Stephan Linn, C. S. Mishra, Andre Sznajder, Yuri Gershtein, M. D. Peters, N. Oshima, Daria Zieminska, R. Piegaia, D. Shpakov, P. Demine, H. Zheng, P. Hanlet, D. Coppage, R. D. Schamberger, D. A. Stoyanova, A. S. Turcot, Howard Gordon, K. C. Frame, S. Reucroft, A. A. Mayorov, R. L. McCarthy, M. Strovink, Elemer Nagy, L. Oesch, L. Babukhadia, T. Fahland, M. A. Kubantsev, Robert Hirosky, Pushpalatha C Bhat, Gervasio Gomez, D. Buchholz, Vasken Hagopian, K. Gounder, Anna Goussiou, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, H. Weerts, Z. M. Wang, R. Snihur, Michael Begel, K. Genser, Shuichi Kunori, V. Vaniev, B. Pawlik, S. Youssef, H. E. Fisk, Lev Dudko, Gregory R Snow, B. G. Pope, Y. Kulik, L. J. Pan, Haiyan Wang, R. Demina, D. Casey, S.A. Kahn, J. Kotcher, D. Mihalcea, B. Connolly, M. Roco, E. Flattum, S. Chopra, K. W. Merritt, J. Womersley, Richard Breedon, M. Demarteau, G. Gutierrez, J. F. Bartlett, Gilvan Alves, B. May, V. Manankov, N. Graf, K. Streets, Vipin Bhatnagar, Robert Kehoe, V. Zutshi, S. Fuess, M. H.G. Souza, T. Rockwell, Iain Alexander Bertram, V. Simak, D. Karmanov, S. Negroni, Z. Zhou, J. Solomon, R. Partridge, V. S. Narasimham, L. Groer, Thomas G Trippe, E. Popkov, A. N. Galyaev, G. Eppley, E. J. Ramberg, Ariel Schwartzman, E. Smith, K. M. Chan, Dhiman Chakraborty, H. E. Montgomery, Y. Fisyak, Alexander Belyaev, Vladimir Gavrilov, Michael Rijssenbeek, Gordon Watts, Elizaveta Shabalina, D. A. Wijngaarden, J. Rha, V. Sirotenko, H. S. Mao, H. da Motta, J. G.R. Lima, P. Yamin, Marvin Johnson, P. Padley, A. S. Ito, Z. Yu, Patrick Slattery, O. V. Eroshin, Daniel Whiteson, A. V. Kozelov, Phillip Gutierrez, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, Anurag Gupta, Alexey Volkov, Suyong Choi, Michael A. Strauss, Peter W. Draper, Heriberto Castilla-Valdez, V. N. Evdokimov, J. Warchol, J. T. White, J. T. Linnemann, V. Sorín, K. Yip, D. K. Cho, S. P. Denisov, James H Cochran, E. G. Zverev, Jasvinder A. Singh, R. Gilmartin, R. K. Shivpuri, J. Snow, Mitchell Wayne, Ulrich Heintz, F. Stichelbaut, L. Stutte, Jinhong Yu, H. Jöstlein, A.S. Dyshkant, H. L. Melanson, P. Z. Quintas, Chris Hays, M. R. Krishnaswamy, M. Buehler, W. E. Cooper, S. Duensing, Suman Bala Beri, M. Diesburg, V.V. Abramov, Andrew White, N. R. Stanton, V. A. Bezzubov, J. P. Negret, R. P. Smith, Matthew Jones, A. Juste, B. Baldin, L. Lueking, Y. Ducros, A. Para, M. Abolins, J. H. Christenson, H. Schellman, J. M. Kohli, U. Bassler, David H. Adams, P. Grudberg, Sergey Chekulaev, Alice Bean, Michael Shupe, Arnaud Lucotte, J. Estrada, Meenakshi Narain, N. K. Mondal, H. T. Diehl, H. Singh, K. Del Signore, R. Jesik, X. C. Meng, John Hobbs, N. Parua, Randy Ruchti, D. R. Claes, A. Boehnlein, P. van Gemmeren, Alberto Santoro, A. V. Kotwal, Harrison Prosper, F. Canelli, S. Desai, J. Ellison, A. K.A. Maciel, Seong Keun Kim, D. Toback, M. Sosebee, Stefan Grünendahl, J. Thompson, Sergey Kuleshov, P. M. Tuts, M. Merkin, P. Rubinov, J. M. Hauptman, Cecilia Elena Gerber, V. E. Kuznetsov, R. W. Stephens, V. V. Babintsev, J. Bantly, P. I. Goncharov, G. Ginther, S. Doulas, Jianming Qian, S. A. Jerger, C. Miao, B. Olivier, Raymond Brock, Boaz Klima, Andrew Brandt, S. R. Hou, Victor Daniel Elvira, G. Briskin, R. Engelmann, E. A. Kozlovsky, J. A. Wightman, H.E. Miettinen, D. Norman, A. Leflat, Jeffrey F. Krane, S. Willis, N. I. Bojko, M. I. Martin, R. D. Martin, B. Gómez, M. L. Stevenson, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, S. Tentindo-Repond, G. Di Loreto, J. McDonald, Z. H. Zhu, Kaushik De, Philip Baringer, Shashikant Dugad, S. Banerjee, Gregorio Bernardi, D. Denisov, S. M. Tripathi, V. Buescher, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, E. W. Anderson, Q. Z. Li, Stephen Wimpenny, A. R. Clark, Allen Mincer, Sebastian Grinstein, T. Marshall, A. V. Kostritskiy, Darien Wood, Sissel Hansen, Nicholas John Hadley, L. Coney, N. Sen, S. Blessing, S. N. Gurzhiev, Scott Snyder, R. J. Madaras, B. Gibbard, Viatcheslav Stolin, Yu-tin Huang, J. Sculli, Nikos Varelas, C. Lundstedt, D. Hedin, Neeti Parashar, M. Zielinski, V. Oguri, Gustaaf Brooijmans, Elizabeth Gallas, T. McMahon, F. Fleuret, R. Van Kooten, S. Feher, A. Besson, K. A. Johns, G. Graham, A. Zieminski, R. A. Sidwell, J. V.D. Wirjawan, E. Kajfasz, G. Steinbrück, Rajendran Raja, Brad Abbott, M. Fortner, N. W. Reay, J. Perkins, Emanuela Barberis, L. T. Goss, A. Baden, G. C. Blazey, H. Haggerty, R. Yamada, H. D. Wahl, N. Amos, M. Zanabria, Winston Ko, Orin I. Dahl, John Rutherfoord, Mary Beth Adams, James C. Green, K. S. Hahn, D. Cutts, O. Peters, Wagner Carvalho, Greg Landsberg, M. Paterno, K. Soustruznik, F. Borcherding, T. Yasuda, Miguel Mostafa, M. M. Baarmand, Wendy Taylor, A. Patwa, Sarah Catherine Eno, F. Nang, Richard B. Lipton, Roger Moore, P. Gartung, C. Klopfenstein, B. Knuteson, N. Sotnikova, R. J. Genik, D. Fein, Don Lincoln, P. W. Balm, Daniel John Karmgard, C. Hebert, Jing Li, N.V. Mokhov, A. P. Heinson, R. E. Hall, J. L. González Solís, Z. Casilum, S. Krzywdzinski, A. Zylberstejn, F. Lehner, H. Greenlee, A. Bross, G. A. Davis, and Serban Protopopescu

Subjects
Quantum chromodynamics, Absolute magnitude, Physics, Particle physics, Jet (fluid), 010308 nuclear & particles physics, General Physics and Astronomy, 01 natural sciences, Nuclear physics, Cross section (physics), Square root, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

The D0 Collaboration has measured the inclusive jet cross section in barpp collisions at square root of s = 630 GeV. The results for pseudorapidities (eta)

Published
2001

14. Ratios of Multijet Cross Sections inpp¯Collisions at√s=1.8TeV

Author

P. Demine, H. Zheng, P. Hanlet, Robert Hirosky, D. Coppage, P. A. Rapidis, A. Jonckheere, A. P. Vorobiev, R. Demina, G. Gutierrez, Gilvan Alves, Stephan Linn, B. May, T. Rockwell, Iain Alexander Bertram, V. S. Narasimham, E. T. Goss, Thomas G Trippe, N. Oshima, S. Reucroft, Michael Rijssenbeek, Daria Zieminska, R. D. Schamberger, M. H.G. Souza, Anurag Gupta, M. A. Kubantsev, H. E. Montgomery, J. Snow, V. N. Evdokimov, G. Steinbrück, Chris Hays, Elizabeth Gallas, T. McMahon, Ulrich Heintz, M. Abolins, Jasvinder A. Singh, Z. Yu, Y. Fisyak, H. Jöstlein, V. A. Bezzubov, J. P. Negret, Bobby Samir Acharya, R. P. Smith, H. A. Neal, Daniel Whiteson, H. C. Shankar, Rajendran Raja, J. T. Linnemann, V. Sorín, K. Yip, Jinhong Yu, E. Groer, A.S. Dyshkant, M. Diesburg, Marvin Johnson, Michael Shupe, E. Oesch, A. V. Kozelov, D. Buchholz, S. Fuess, Andrew White, Pushpalatha C Bhat, Brad Abbott, H. L. Melanson, P. Z. Quintas, J. Estrada, C. Klopfenstein, M. Bhattacharjee, E. Popkov, K. Del Signore, H. E. Fisk, N. K. Mondal, A. A. Mayorov, R. K. Shivpuri, E. Coney, H. T. Diehl, H. Singh, K. Gounder, P. Grudberg, Anna Goussiou, A. V. Kotwal, Harrison Prosper, A. Boehnlein, K. A. Johns, S. Desai, E. G. Zverev, M. A.C. Cummings, M. Strovink, B. Hoeneisen, Sharon Hagopian, D. A. Stoyanova, A. S. Turcot, J. Ellison, A. K.A. Maciel, Lee Sawyer, S. P. Denisov, N.V. Mokhov, T. Heuring, J. H. Christenson, David H. Adams, D. R. Claes, Gregory R Snow, P. M. Tuts, V. E. Kuznetsov, Z. Zhou, J. Solomon, R. W. Stephens, John Hobbs, Gervasio Gomez, K. M. Mauritz, P. van Gemmeren, A. V. Kostritskiy, M. R. Krishnaswamy, Alice Bean, A. P. Heinson, Neeti Parashar, Shuichi Kunori, P.F. Ermolov, S. Doulas, Sissel Hansen, Vladimir Gavrilov, B. Knuteson, Michael Begel, Elemer Nagy, Haiyan Wang, V. Vaniev, A. Para, M. Zielinski, R. J. Madaras, F. Canelli, E. Lueking, Sergey Chekulaev, Suyong Choi, V. S. Burtovoi, S.A. Kahn, Kaushik De, M. E. Stevenson, Gordon Watts, Meenakshi Narain, V. Sirotenko, O. I. Dabi, N. Sen, E. Stutte, R. Gilmartin, T. Fahland, R. E. Hall, R. Piegaia, J. V.D. Wirjawan, K. Genser, M. Demarteau, N. Sotnikova, Z. Casilum, R. J. Genik, Wendy Taylor, A. Patwa, F. Fleuret, R. Snihur, K. Streets, Vipin Bhatnagar, J. M. Hauptman, R. Partridge, R. Van Kooten, S. Feher, A. Besson, E. Kajfasz, S. M. Tripathi, Cecilia Elena Gerber, G. Di Loreto, D. Hedin, E. J. Ramberg, M. Merkin, D. P. Stoker, Heriberto Castilla-Valdez, D. Fein, V. Simak, O. V. Eroshin, Gregorio Bernardi, D. Denisov, V. V. Babintsev, G. Ginther, Roger Moore, Y. Kulik, P. Padley, Alexey Volkov, G. Graham, A. Zieminski, M. Sosebee, E. Flattum, Phillip Gutierrez, Don Lincoln, P. W. Balm, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, Jianming Qian, J. Rha, J. E. González Solís, H. S. Mao, Stefan Grünendahl, S. Chopra, R. Eipton, Daniel John Karmgard, P. Gartung, J. Thompson, S. R. Hou, G. Briskin, Stephen Wimpenny, V. Oguri, P. Yamin, B. Gómez, C. Hebert, A. R. Clark, Alexander Belyaev, S. N. Gurzhiev, Howard Gordon, R. A. Sidwell, Z. H. Zhu, T. Marshall, Shashikant Dugad, J. Bantly, K. C. Frame, Ariel Schwartzman, E. Smith, Jeffrey F. Krane, Gustaaf Brooijmans, Viatcheslav Stolin, V. Buescher, K. M. Chan, Dhiman Chakraborty, J. Warchol, M. Chung, Patrick Slattery, Jing Li, Raymond Brock, K. W. Merritt, P. I. Goncharov, Darien Wood, C. Lundstedt, Boaz Klima, E. W. Anderson, U. Bassler, J. F. Bartlett, Andrew Brandt, R. Engelmann, V. Manankov, B. Pawlik, Q. Z. Li, S. Krzywdzinski, C. S. Mishra, Peter W. Draper, G. Eppley, J. Womersley, Allen Mincer, D. Casey, Nicholas John Hadley, J. Kotcher, E. A. Kozlovsky, H.E. Miettinen, D. Norman, N. Amos, D. Karmanov, S. Blessing, S. Negroni, Sebastian Grinstein, A. Zylberstejn, F. Lehner, H. Greenlee, Scott Snyder, C. Miao, B. Olivier, Alberto Santoro, Seong Keun Kim, S. Willis, D. Toback, H. da Motta, P. Rubinov, N. Graf, J. G.R. Lima, A. N. Galyaev, Vasken Hagopian, A. Bross, D. K. Cho, H. Weerts, Z. M. Wang, Lev Dudko, W. E. Cooper, S. Duensing, H. D. Wahl, M. Zanabria, M. Fortner, N. W. Reay, G. A. Davis, Serban Protopopescu, Winston Ko, A. S. Ito, E. J. Pan, J. Perkins, O. Peters, B. Gibbard, V.V. Abramov, T. Yasuda, Matthew Jones, Emanuela Barberis, Arnaud Lucotte, F. Stichelbaut, Yu-tin Huang, J. Sculli, N. Parua, Randy Ruchti, Nikos Varelas, H. Haggerty, R. L. McCarthy, M. Roco, A. Baden, G. C. Blazey, R. Yamada, John Rutherfoord, B. Baldin, Mary Beth Adams, Y. Ducros, James C. Green, X. C. Meng, F. Borcherding, Sergey Kuleshov, Victor Daniel Elvira, J. A. Wightman, M. Buehler, N. I. Bojko, Miguel Mostafa, R. D. Martin, M. M. Baarmand, Sarah Catherine Eno, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, N. R. Stanton, H. Piekarz, F. Nang, S. Youssef, R. Jesik, K. S. Hahn, D. Cutts, Robert Kehoe, V. Zutshi, Wagner Carvalho, Greg Landsberg, M. Paterno, K. Soustruznik, S. A. Jerger, A. Leflat, D. Mihalcea, B. Connolly, Richard Breedon, M. I. Martin, S. Tentindo-Repond, J. McDonald, Philip Baringer, S. Banerjee, B. G. Pope, Elizaveta Shabalina, J. T. White, D. A. Wijngaarden, Michael A. Strauss, Suman Bala Beri, A. Juste, D. Edmunds, Andre Sznajder, Yuri Gershtein, M. D. Peters, L. Babukhadia, and D. Shpakov

Subjects
Quantum chromodynamics, Physics, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Tevatron, General Physics and Astronomy, Jet (particle physics), 01 natural sciences, law.invention, Nuclear physics, Renormalization, Transverse plane, law, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, 010306 general physics, Collider, Bar (unit)
Abstract

We report on a study of the ratio of inclusive three-jet to inclusive two-jet production cross sections as a function of total transverse energy in p (p) over bar collisions at it center-of-mass energy roots = 1.8 TeV, using data collected with the DO detector during the 1992-1993 run of the Fermilab Tevatron Collider. The measurements are used to deduce preferred renormalization scales in perturbative O(alpha (3)(s)) QCD calculations in modeling soft-jet emission.

Published
2001

15. Inclusive Jet Production inpp¯Collisions

Author

M. Merkin, Raymond Brock, Boaz Klima, R. Beuselinck, D. Norman, S. Willis, A. N. Galyaev, D. K. Cho, R. Illingworth, W. E. Cooper, S. Duensing, Pushpalatha C Bhat, G. Eppley, Robert Hirosky, B. May, Anupam Gupta, D. Buchholz, C. Klopfenstein, Vipin Bhatnagar, D. Bauer, Stephen Wimpenny, K. Gounder, B. G. Pope, M. A.C. Cummings, B. Hoeneisen, N. Parua, V.V. Abramov, H. da Motta, J. G.R. Lima, R. Demina, G. Gutierrez, R. Snihur, D. Mihalcea, B. Connolly, Richard Breedon, F. Borcherding, E. Coney, Gilvan Alves, E. Duflot, A. S. Ito, V. Simak, Bobby Samir Acharya, H. A. Neal, M. Jaffré, Ulrich Heintz, V. S. Narasimham, T. Marshall, Kenneth Johns, Anna Goussiou, V. Oguri, F. Stichelbaut, Elizaveta Shabalina, R. Partridge, N.V. Mokhov, Thomas G Trippe, J. T. Linnemann, V. Sorín, H. E. Melanson, Jasvinder A. Singh, D. A. Wijngaarden, H. Jöstlein, P. Padley, Alexey Volkov, Gustaaf Brooijmans, T. C. Bacon, Haiyan Wang, T. Nunnemann, B. Baldin, K. Yip, A. P. Heinson, S.A. Kahn, Arnaud Lucotte, M. Diesburg, Andrew White, J. Warchol, R. J. Madaras, M. Demarteau, Y. Ducros, Darien Wood, Heriberto Castilla-Valdez, D. P. Stoker, K. W. Merritt, E. Sawyer, James H Cochran, Jinhong Yu, S. N. Gurzhiev, E. Groer, R. L. McCarthy, R. E. Hall, B. Knuteson, J. T. White, Nicholas John Hadley, Shuichi Kunori, A.S. Dyshkant, F. Fleuret, Z. Casilum, Michael A. Strauss, P. A. Rapidis, Gregory R Snow, Randy Ruchti, L. Lueking, Mitchell Wayne, E. Stutte, H. Schellman, J. M. Kohli, Emanuela Barberis, V. Vaniev, A. P. Vorobiev, M. Buehler, C. S. Mishra, S. Blessing, X. C. Meng, E. Popkov, Scott Snyder, A. Jonckheere, K. Del Signore, A. A. Mayorov, Matthew Jones, S. Krzywdzinski, R. Van Kooten, M. Roco, J. F. Bartlett, Elizabeth Gallas, T. McMahon, N. Sotnikova, K. M. Mauritz, P. Demine, V. Manankov, N. R. Stanton, L. T. Goss, T. Heuring, Stefan Grünendahl, Sergey Kuleshov, S. Feher, A. Besson, R. J. Genik, J. Thompson, R. K. Shivpuri, J. Snow, M. Strovink, N. Oshima, H. Zheng, Charles Leggett, P. Hanlet, J. Rha, J. E. González Solís, S. R. Hou, John Hobbs, Daria Zieminska, Vasken Hagopian, D. Coppage, P. M. Tuts, Victor Daniel Elvira, V. E. Kuznetsov, A. Zylberstejn, K. M. Chan, Dhiman Chakraborty, F. Lehner, H. Greenlee, G. Graham, D. R. Claes, P. van Gemmeren, P.F. Ermolov, H. Weerts, Z. M. Wang, Miguel Mostafa, R. W. Stephens, B. Gómez, A. Zieminski, R. Jesik, S. Doulas, Lev Dudko, J. Womersley, M. A. Kubantsev, J. A. Wightman, Shashikant Dugad, D. Hedin, Kaushik De, Sergey Chekulaev, Ricardo Piegaia, H. Haggerty, M. M. Baarmand, Elemer Nagy, Sarah Catherine Eno, M. Bhattacharjee, H. D. Wahl, M. Zanabria, G. A. Davis, Serban Protopopescu, H. S. Mao, N. I. Bojko, S. Reucroft, T. Fahland, R. D. Martin, E. J. Ramberg, Winston Ko, M. Abolins, D. Karmanov, R. A. Sidwell, P. Yamin, O. Peters, Sharon Hagopian, Alexander Belyaev, D. Fein, S. Negroni, V. S. Burtovoi, Viatcheslav Stolin, Y. Kulik, S. M. Tripathi, Don Lincoln, A. Leflat, A. V. Kostritskiy, E. Flattum, J. S. Hoftun, K. Davis, J. N. Butler, P. W. Balm, S. Fuess, Daniel John Karmgard, P. D. Grannis, M. I. Martin, K. Papageorgiou, T. Rockwell, Iain Alexander Bertram, N. K. Mondal, H. Piekarz, Sissel Hansen, Suman Bala Beri, S. Chopra, M. Fortner, C. Hebert, T. Yasuda, Wendy Taylor, A. Bross, N. W. Reay, A. Abdesselam, H. T. Diehl, Ariel Schwartzman, G. Steinbrück, Michael Rijssenbeek, A. Patwa, J. Perkins, Allan G Clark, Roger Moore, N. Amos, Peter W. Draper, Patrick Slattery, H. Singh, S. Youssef, E. Smith, S. Tentindo-Repond, Melissa Ridel, A. Juste, N. Sen, Rajendran Raja, M. Sosebee, J. McDonald, D. A. Stoyanova, A. S. Turcot, A. Boehnlein, M. Chung, V. Zutshi, R. D. Schamberger, Y. Fisyak, Gervasio Gomez, Vladimir Gavrilov, F. Nang, Richard B. Lipton, Philip Baringer, Yu-tin Huang, Marvin Johnson, Michael Begel, Howard Gordon, K. C. Frame, Brad Abbott, Pierre Petroff, V. N. Evdokimov, D. Shpakov, A. V. Kozelov, J. Ellison, A. K.A. Maciel, C. Lundstedt, Gordon Watts, Nikos Varelas, K. Genser, V. Sirotenko, K. S. Hahn, D. Edmunds, Sergey Denisov, V. Buescher, E. W. Anderson, D. Cutts, Andre Sznajder, M. R. Krishnaswamy, Yuri Gershtein, O. V. Eroshin, Q. Z. Li, S. A. Jerger, M. D. Peters, P. I. Goncharov, A. Para, B. Pawlik, J. V.D. Wirjawan, C. Miao, B. Olivier, L. Oesch, Sebastian Grinstein, L. Babukhadia, Wagner Carvalho, M. H.G. Souza, Phillip Gutierrez, Chris Hays, V. A. Bezzubov, H. E. Montgomery, J. P. Negret, Greg Landsberg, Sw. Banerjee, E. Kajfasz, Suyong Choi, Z. Yu, Daniel Whiteson, D. Casey, R. P. Smith, J. Kotcher, Michael Shupe, N. Graf, M. Paterno, K. Soustruznik, P. Z. Quintas, J. Estrada, J. H. Christenson, David H. Adams, Alice Bean, F. Canelli, A. Baden, A. V. Kotwal, Andrew Brandt, R. Engelmann, G. C. Blazey, Harrison Prosper, S. Desai, E. A. Kozlovsky, H.E. Miettinen, R. Yamada, G. Di Loreto, E. G. Zverev, John Rutherfoord, Gregorio Bernardi, D. Denisov, C. Luo, Mary Beth Adams, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, James C. Green, Meenakshi Narain, S. E. Linn, Neeti Parashar, M. Zielinski, H. E. Fisk, L. J. Pan, Z. Zhou, J. Solomon, R. Gilmartin, M. Gao, U. Bassler, Alberto Santoro, Seong Keun Kim, D. Toback, P. Rubinov, J. M. Hauptman, Cecilia Elena Gerber, V. V. Babintsev, G. Ginther, Jianming Qian, G. Briskin, Jeffrey F. Krane, and Li Jingyuan

Subjects
Quantum chromodynamics, Physics, Particle physics, 010308 nuclear & particles physics, Tevatron, General Physics and Astronomy, Parton, Jet (particle physics), 7. Clean energy, 01 natural sciences, Nuclear physics, Cross section (physics), Distribution function, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, 010306 general physics
Abstract

We report a new measurement of the pseudorapidity (eta) and transverse-energy (Et) dependence of the inclusive jet production cross section in pbar b collisions at sqrt(s) = 1.8 TeV using 95 pb**-1 of data collected with the DZero detector at the Fermilab Tevatron. The differential cross section d^2sigma/dEt deta is presented up to |eta| = 3, significantly extending previous measurements. The results are in good overall agreement with next-to-leading order predictions from QCD and indicate a preference for certain parton distribution functions.

Published
2001

16. Cross Section forb-Jet Production inp¯pCollisions at√s=1.8TeV

Author

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

Subjects
Quantum chromodynamics, Physics, Particle physics, 010308 nuclear & particles physics, Tevatron, General Physics and Astronomy, Jet (particle physics), 01 natural sciences, Bottom quark, law.invention, Nuclear physics, Cross section (physics), law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Rapidity, Fermilab, 010306 general physics, Collider
Abstract

Bottom quark production in pbar-p collisions at sqrt(s)=1.8 TeV is studied with 5 inverse picobarns of data collected in 1995 by the DO detector at the Fermilab Tevatron Collider. The differential production cross section for b jets in the central rapidity region (|y(b)| < 1) as a function of jet transverse energy is extracted from a muon-tagged jet sample. Within experimental and theoretical uncertainties, DO results are found to be higher than, but compatible with, next-to-leading-order QCD predictions.

Published
2000

17. Spin Correlation intt¯Production frompp¯Collisions at√s=1.8TeV

Author

A. N. Galyaev, D. K. Cho, D. Fein, B. May, Don Lincoln, W. E. Cooper, Daniel R Claes, R. A. Sidwell, Daniel John Karmgard, C. Hebert, Robert Hirosky, B. Gobbi, Anurag Gupta, N. Amos, M. Abolins, Jing Li, D. Mihalcea, Jasvinder A. Singh, B. Connolly, W. Y. Chen, Richard Breedon, N.V. Mokhov, G. Gutierrez, Gilvan Alves, A. P. Heinson, M. Sosebee, S. A. Jerger, A. Leflat, M. Merkin, R. E. Hall, N. K. Mondal, J. L. González Solís, T. Rockwell, Iain Alexander Bertram, Z. Casilum, Emanuela Barberis, H. T. Diehl, H. Singh, R. L. McCarthy, V. S. Narasimham, Thomas G Trippe, J. Bantly, W. G. Cobau, M. I. Martin, N. W. Reay, Michael Rijssenbeek, A. Boehnlein, Raymond Brock, Boaz Klima, L. T. Goss, J. Ellison, Neeti Parashar, A. K.A. Maciel, M. Chung, S. Fuess, S. Tentindo-Repond, J. McDonald, V. N. Evdokimov, D. Norman, S. Willis, M. Zielinski, S. Krzywdzinski, Ron Lipton, M. Roco, J. Womersley, Andrew Brandt, D. Karmanov, S. Negroni, Brajesh C Choudhary, Andrew White, J. Snow, Vladimir Gavrilov, A. Zylberstejn, Bobby Samir Acharya, H. A. Neal, R. Engelmann, H. C. Shankar, J. T. Linnemann, V. Sorín, K. Yip, J. A. Wightman, N. I. Bojko, L. Stutte, Jinhong Yu, A.S. Dyshkant, Gordon Watts, Philip Baringer, F. Lehner, H. Greenlee, G. Eppley, Suyong Choi, Chris Hays, E. A. Kozlovsky, H.E. Miettinen, A. Bross, R. D. Martin, H. da Motta, J. G.R. Lima, H. Haggerty, V. A. Bezzubov, V. Sirotenko, O. V. Eroshin, J. P. Negret, T. Heuring, P. Grudberg, S. Banerjee, Phillip Gutierrez, M. L. Stevenson, Serban Protopopescu, R. P. Smith, T. McMahon, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, M. Bhattacharjee, Ulrich Heintz, H. Jöstlein, E. Popkov, John Hobbs, A. S. Ito, B. Baldin, C. S. Mishra, Michael Shupe, G. Guglielmo, Y. Ducros, K. Del Signore, J. Estrada, D. Edmunds, G. Di Loreto, Gregorio Bernardi, D. Denisov, Sharon Hagopian, M. Diesburg, J. Tarazi, E. G. Zverev, Sergey Kuleshov, Vasken Hagopian, Andre Sznajder, Yuri Gershtein, Victor Daniel Elvira, T. Fahland, V. Buescher, F. Stichelbaut, U. Bassler, R. Gilmartin, M. Fortner, Srinivasan Rajagopalan, Elemer Nagy, M. D. Peters, Hal Evans, H. Weerts, A. V. Kotwal, Lev Dudko, S. Youssef, E. W. Anderson, Thomas Ferbel, Harrison Prosper, P. M. Tuts, Robert Kehoe, V. Zutshi, T. McKibben, E. Flattum, J. Perkins, J. G. Lu, Q. Z. Li, L. Oesch, R. W. Stephens, L. Babukhadia, P. I. Goncharov, C. Miao, Alberto Santoro, Meenakshi Narain, Michael A. Strauss, V.V. Abramov, Alexander Belyaev, Ariel Schwartzman, E. Smith, Matthew Jones, S. N. Gurzhiev, Patrick Slattery, Seong Keun Kim, Allen Mincer, P. Yamin, Sebastian Grinstein, D. Toback, B. Olivier, Heriberto Castilla-Valdez, R. Piegaia, Arnaud Lucotte, R. J. Madaras, D. A. Stoyanova, R. Snihur, Gervasio Gomez, A. V. Kostritskiy, T. Joffe-Minor, Viatcheslav Stolin, N. Parua, Randy Ruchti, S. Mani, Sissel Hansen, Alexander Vorobiev, Y. Kulik, H. E. Fisk, F. Fleuret, R. Jesik, L. Coney, L. J. Pan, Suman Bala Beri, N. Sen, C. Lundstedt, N. R. Stanton, D. Cullen-Vidal, K. Genser, Z. Zhou, J. Solomon, D. Hedin, A. Juste, P. Padley, Alexey Volkov, S. Feher, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, Peter W. Draper, Stefan Grünendahl, J. Thompson, B. Gómez, J. M. Hauptman, Z. H. Zhu, Shashikant Dugad, Cecilia Elena Gerber, V. V. Babintsev, A. S. Turcot, G. Ginther, K. S. Hahn, Jianming Qian, G. Briskin, Jeffrey F. Krane, D. Cutts, A. Jonckheere, Stephan Linn, Wagner Carvalho, A. Zieminski, N. Oshima, Daria Zieminska, R. D. Schamberger, K. M. Chan, Dhiman Chakraborty, M. A. Kubantsev, Pushpalatha C Bhat, Greg Landsberg, K. Gounder, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, S. Y. Jun, B. G. Pope, T. L.T. Thomas, Haiyan Wang, S.A. Kahn, M. Demarteau, G. Steinbrück, M. Paterno, Rajendran Raja, Brad Abbott, A. Baden, G. C. Blazey, D. Buchholz, R. Yamada, Elizaveta Shabalina, Orin I. Dahl, John Rutherfoord, J. T. White, Mary Beth Adams, S. Chopra, Anna Goussiou, James C. Green, F. Borcherding, Gregory R Snow, M. H.G. Souza, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, H. E. Montgomery, Z. Yu, Daniel Whiteson, K. M. Mauritz, F. Nang, P.F. Ermolov, V. S. Burtovoi, Shuichi Kunori, V. Vaniev, K. Streets, Vipin Bhatnagar, D. Shpakov, R. Partridge, H. Zheng, P. Hanlet, D. Coppage, S. Reucroft, H. S. Mao, H. L. Melanson, P. Z. Quintas, D. P. Stoker, A. A. Mayorov, J. H. Christenson, M. Strovink, David H. Adams, Alice Bean, Y. Fisyak, Marvin Johnson, A. V. Kozelov, B. Pawlik, D. Casey, J. Kotcher, N. Graf, H. D. Wahl, M. Zanabria, Winston Ko, T. Yasuda, C. Klopfenstein, B. Knuteson, X. F. Song, N. Sotnikova, J. V.D. Wirjawan, R. J. Genik, Wendy Taylor, A. Patwa, Allan G Clark, P. Gartung, Stephen Wimpenny, T. Marshall, Darien Wood, E. Kajfasz, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, R. K. Shivpuri, P. van Gemmeren, Kaushik De, V. Oguri, Gustaaf Brooijmans, S. P. Denisov, J. Warchol, M. R. Krishnaswamy, B. Gibbard, A. Para, Elizabeth Gallas, J. Sculli, Sergey Chekulaev, Nikos Varelas, P. Rubinov, K. A. Johns, K. W. Merritt, J. F. Bartlett, V. Manankov, L. Lueking, Howard Gordon, V. Akimov, and K. C. Frame

Subjects
Physics, Top quark, Particle physics, Antiparticle, Luminosity (scattering theory), Correlation coefficient, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, General Physics and Astronomy, 01 natural sciences, Standard Model, Nuclear physics, Pair production, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Spin-½, Boson
Abstract

The D0 collaboration has performed a study of spin correlation in tt-bar production for the process tt-bar to bb-bar W^+W^-, where the W bosons decay to e-nu or mu-nu. A sample of six events was collected during an exposure of the D0 detector to an integrated luminosity of approximately 125 pb^-1 of sqrt{s}=1.8 TeV pp-bar collisions. The standard model (SM) predicts that the short lifetime of the top quark ensures the transmission of any spin information at production to the tt-bar decay products. The degree of spin correlation is characterized by a correlation coefficient k. We find that k>-0.25 at the 68% confidence level, in agreement with the SM prediction of k=0.88.

Published
2000

18. Measurement of theW→τνProduction Cross Section inpp¯Collisions ats=1.8TeV

Author

A. Baden, M. Fortner, M. Kubantsev, J. Perkins, M. Demarteau, T. Fahland, S. P. Denisov, G. C. Blazey, T. Heuring, M. R. Krishnaswamy, F. Hsieh, D. P. Stoker, Y. Ducros, S. Grinstein, M. Merkin, Orin I. Dahl, John Rutherfoord, C. S. Mishra, D. Norman, G. Steinbrück, A. Schwartzman, Steve Reucroft, Sergey Chekulaev, G. Brooijmans, T. McMahon, Sergey Kuleshov, Victor Daniel Elvira, Mary Beth Adams, P. Rubinov, N. R. Stanton, Ulrich Heintz, D. Casey, R. Yamada, L. Sawyer, F. Stichelbaut, K. W. Merritt, Michael A. Strauss, S. Rajagopalan, P. C. Bhat, V.V. Abramov, E. Popkov, B. Olivier, V. Manankov, J. A. Wightman, N. I. Bojko, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, R. D. Martin, H. L. Melanson, S. Kahn, L. Lueking, J. Kotcher, James C. Green, R. E. Hall, K. S. Hahn, D. Cutts, Wagner Carvalho, A. Bross, Raymond Brock, Boaz Klima, Y. Kulik, C. Klopfenstein, D. Owen, M. Roco, Greg Landsberg, J. Tarazi, Brad Abbott, B. May, R. A. Sidwell, N. Parashar, G. Watts, J. T. Linnemann, M. Diesburg, K. Yip, S. Grünendahl, Y. Fisyak, S. K. Kim, K. Genser, K. Del Signore, M. L. Stevenson, T. Rockwell, Iain Alexander Bertram, M. Paterno, B. Baldin, Matthew Jones, B. Gobbi, M. I. Martin, D. Buchholz, A.S. Dyshkant, Michael Rijssenbeek, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, Andrew White, S. Willis, E. G. Zverev, H. Piekarz, S.H. Ahn, M. Mostafa, M. Strovink, M. Zielinski, Anurag Gupta, N. Parua, A. Boehnlein, P. I. Goncharov, Shuichi Kunori, V. Vaniev, Y. Pischalnikov, Jasvinder A. Singh, P. Hanlet, Suman Bala Beri, D. Koltick, M. M. Baarmand, Sarah Catherine Eno, D. Shpakov, P. Grudberg, A. N. Galyaev, S. Chopra, Suyong Choi, J. Snow, V. Akimov, C. Miao, H. Zheng, D. Coppage, F. Borcherding, D. Denisov, R. Snihur, S. Negroni, F. Nang, D. K. Cho, K. C. Frame, Alexander Belyaev, Arnaud Lucotte, Anna Goussiou, David H. Adams, Haifeng Li, P. M. Tuts, John Hobbs, N. W. Reay, F. Fleuret, Heriberto Castilla-Valdez, R. W. Stephens, S. Feher, Daniel R Claes, B. Connolly, Patrick Slattery, Richard Breedon, K. A. Johns, K. Streets, Vipin Bhatnagar, M. Abolins, S. Youssef, D. A. Stoyanova, Y. Yu, H. Greenlee, G. Di Loreto, V. Sorín, R. Partridge, V. N. Evdokimov, Robert Hirosky, J. G. Lu, Gervasio Gomez, Meenakshi Narain, J. M. Hauptman, G. Guglielmo, Robert Kehoe, V. Zutshi, Gregorio Bernardi, B. Gómez, Randy Ruchti, A. Zieminski, M. Chung, N. K. Mondal, H. T. Diehl, R. K. Shivpuri, X. F. Song, Marvin Johnson, H. Singh, B. Knuteson, H. S. Mao, D. Cullen-Vidal, Hal Evans, Thomas Ferbel, B. Hoeneisen, M. Zanabria, A. V. Kozelov, W. Y. Chen, Gilvan Alves, R. Jesik, Gregory R Snow, T. McKibben, J. Yu, E. Kajfasz, J. Ellison, A. K.A. Maciel, J. F. Bartlett, S. Hansen, K. M. Chan, Dhiman Chakraborty, Cecilia Elena Gerber, V. S. Narasimham, V. V. Babintsev, M. Tartaglia, G. Ginther, L. Stutte, V. Oguri, Thomas G Trippe, Kaushik De, P. van Gemmeren, Jianming Qian, Vladimir Gavrilov, M. Bhattacharjee, S. N. Gurzhiev, S. Y. Jun, P. Z. Quintas, T. L.T. Thomas, A. Jonckheere, M. Sosebee, G. Briskin, V. Sirotenko, J. V. D. Wirjawan, D. Edmunds, Viatcheslav Stolin, S. Protopopescu, Sharon Hagopian, N. Sotnikova, Jeffrey F. Krane, O. V. Eroshin, Phillip Gutierrez, H. Gordon, J. Warchol, Andre Sznajder, R. J. Genik, W. E. Cooper, Stephen Wimpenny, D. Lincoln, Yuri Gershtein, C. Lundstedt, J. Bantly, J. T. White, Ron Lipton, B. Pawlik, L. Oesch, D. R. Green, Darien Wood, L. Babukhadia, Nicholas John Hadley, J. H. Christenson, Andrew Brandt, J. Womersley, Vasken Hagopian, R. J. Madaras, R. Engelmann, S. Blessing, E. A. Kozlovsky, H. Weerts, U. Bassler, Scott Snyder, H.E. Miettinen, Lev Dudko, R. Markeloff, A. S. Ito, A. Para, B. Gibbard, H. D. Wahl, Winston Ko, D. Karmanov, J. Sculli, L. T. Goss, M. H.G. Souza, Nikos Varelas, Alberto Santoro, A. Patwa, A. A. Mayorov, Brajesh C Choudhary, Allan G Clark, S. A. Jerger, D. Toback, T. Joffe-Minor, P. Gartung, A. Leflat, D. Hedin, Chris Hays, H. E. Montgomery, W. G. Cobau, Z. Zhou, J. Solomon, Qiming Li, J. P. Negret, V. A. Bezzubov, E. Flattum, R. Gilmartin, S. Krzywdzinski, H. Jöstlein, R. P. Smith, Michael Shupe, J. McDonald, K. M. Mauritz, P.F. Ermolov, J. Estrada, A. V. Kotwal, Harrison Prosper, Philip Baringer, F. Lehner, A. P. Heinson, J. L. González Solís, Z. Casilum, D. Fein, H. E. Fisk, Daniel John Karmgard, C. Hebert, Jing Li, T. Yasuda, A. V. Kostritskiy, L. Coney, N. Sen, M. Peters, V. Buescher, A. Zylberstejn, E. Smith, E. W. Anderson, V. S. Burtovoi, Allen Mincer, P. Yamin, H. Haggerty, R. Piegaia, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, S. Banerjee, Z. H. Zhu, Shashikant Dugad, A. S. Turcot, B. G. Pope, Elizaveta Shabalina, G. Gutierrez, Emanuela Barberis, N. Mokhov, E. Nagy, E. Gallas, N. Amos, G. Eppley, H. da Motta, J. G.R. Lima, D. Zieminska, S. Fuess, R. L. McCarthy, T. Marshall, N. Graf, S. Mani, Peter W. Draper, K. Gounder, M. A.C. Cummings, A. P. Vorobiev, R. Raja, Stephan Linn, N. Oshima, and R. D. Schamberger

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Electroweak interaction, General Physics and Astronomy, Electron, 01 natural sciences, Nuclear physics, Pair production, 0103 physical sciences, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, 010306 general physics, Charged current, Lepton
Abstract

of data collected with the DO detector during 1993-1995. We find that a(p (p) over bar --> W + X)B(W --> tau nu) = 2.22 +/- 0.09 (stat) +/- 0.10 (syst) +/- 0.10 (lum) nb. Lepton universality predicts that the ratio of the tau and electron electroweak charged current couplings to the W boson, g(T)(W)/g(e)(W), be unity. We find g(T)(W)/g(e)(W) = 0.980 +/- 0.031, in agreement with lepton universality.

Published
2000

19. Probing Balitsky-Fadin-Kuraev-Lipatov Dynamics in the Dijet Cross Section at Large Rapidity Intervals inpp¯Collisions at√s=1800and 630 GeV

Author

R. Piegaia, P. Padley, Alexey Volkov, Chris Hays, D. A. Stoyanova, James H Cochran, V. A. Bezzubov, Mitchell Wayne, H. Schellman, J. M. Kohli, H. Jöstlein, Suyong Choi, R. P. Smith, Gervasio Gomez, B. May, J. Thompson, N. W. Reay, David H. Adams, Alice Bean, D. Buchholz, T. McMahon, Z. H. Zhu, Michael Shupe, Shashikant Dugad, G. Di Loreto, B. Gobbi, Wendy Taylor, Anurag Gupta, D. Cullen-Vidal, A. S. Turcot, A. Patwa, Marvin Johnson, J. Estrada, Jasvinder A. Singh, Gregorio Bernardi, Allan G Clark, A. V. Kozelov, N. R. Stanton, A. Zylberstejn, S. Negroni, A. V. Kotwal, Harrison Prosper, Hal Evans, Thomas Ferbel, M. Chung, V. Buescher, T. Fahland, R. A. Sidwell, S. Hansen, S. Chopra, G. Eppley, Anna Goussiou, P. Gartung, A. Baden, L. Stutte, V. Oguri, E. W. Anderson, A. Para, G. Guglielmo, K. Genser, K. Streets, Vipin Bhatnagar, R. Partridge, J. A. Wightman, B. Gómez, N. I. Bojko, R. Yamada, Gregory R Snow, G. C. Blazey, H. da Motta, J. G.R. Lima, S. Fuess, M. Demarteau, S. Protopopescu, H. Gordon, J. Kotcher, D. Fein, H. E. Fisk, J. Sculli, Daniel John Karmgard, B. Pawlik, H. S. Mao, L. Lueking, C. Hebert, R. Snihur, E. Popkov, Allen Mincer, M. Zielinski, R. D. Martin, T. Heuring, J. Warchol, N. Parua, H. Haggerty, M. Zanabria, Jing Li, Nikos Varelas, T. Yasuda, K. M. Mauritz, P. I. Goncharov, D. P. Stoker, A. P. Heinson, M. Strauss, A. V. Kostritskiy, M. Kubantsev, D. Zieminska, Bobby Samir Acharya, H. A. Neal, Heriberto Castilla-Valdez, J. L. González Solís, H. C. Shankar, J. T. Linnemann, Z. Casilum, M. Peters, Stephen Wimpenny, M. Diesburg, M. Roco, E. Smith, Ulrich Heintz, C. S. Mishra, K. Yip, P.F. Ermolov, D. Norman, C. Miao, B. Olivier, L. Coney, N. Sen, M. L. Stevenson, P. Gutierrez, S. Grünendahl, J. T. White, R. J. Madaras, S. N. Gurzhiev, H. L. Melanson, H. D. Wahl, Winston Ko, B. Hoeneisen, Y. Kulik, A. A. Mayorov, T. Marshall, Darien Wood, M. Abolins, K. Del Signore, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, S. Rajagopalan, A.S. Dyshkant, H. Piekarz, Nicholas John Hadley, Viatcheslav Stolin, B. Baldin, M. Jones, Andrew White, K. A. Johns, R. Jesik, V. S. Burtovoi, E. G. Zverev, N. K. Mondal, H. T. Diehl, V. D. Elvira, D. Casey, D. Hedin, C. Lundstedt, J. Snow, P. Grudberg, F. Fleuret, R. E. Hall, J. Tarazi, A. Zieminski, R. L. McCarthy, Shuichi Kunori, J. P. Negret, S. Blessing, R. Markeloff, Alexander Leflat, M. Strovink, P. M. Tuts, S. Youssef, Ron Lipton, P. C. Bhat, A. P. Vorobiev, R. Raja, H. Singh, V. Vaniev, J. Ellison, A. K.A. Maciel, J. Womersley, Vasken Hagopian, R. W. Stephens, S. Feher, John Hobbs, S. Snyder, C. Klopfenstein, H. Weerts, Stephan Linn, Orin I. Dahl, John Rutherfoord, D. Shpakov, Mary Beth Adams, Meenakshi Narain, N. Graf, Robert Hirosky, Robert Kehoe, V. Zutshi, S. Reucroft, T. Rockwell, Iain Alexander Bertram, G. Steinbrück, V. Sorín, H. Zheng, Michael Rijssenbeek, L. T. Goss, N. Oshima, S. Kahn, B. Knuteson, D. Coppage, W. Y. Chen, Gilvan Alves, D. Karmanov, F. Borcherding, D. Denisov, R. D. Schamberger, S. K. Kim, Lev Dudko, Alexander Belyaev, K. M. Chan, Dhiman Chakraborty, Kaushik De, P. van Gemmeren, N. Sotnikova, R. J. Genik, Brajesh C Choudhary, V. N. Evdokimov, M. H.G. Souza, J. V. D. Wirjawan, V. Akimov, F. Stichelbaut, Patrick Slattery, Brad Abbott, K. C. Frame, V. S. Narasimham, Thomas G Trippe, M. Bhattacharjee, James C. Green, K. Gounder, M. Sosebee, S. P. Denisov, Z. Yu, Daniel Whiteson, M. A.C. Cummings, A. S. Ito, D. Lincoln, J. Bantly, A. Juste, Sharon Hagopian, M. Fortner, K. S. Hahn, M. R. Krishnaswamy, Andrew Brandt, R. Engelmann, E. A. Kozlovsky, Y. Ducros, B. Gibbard, D. Cutts, W. E. Cooper, Wagner Carvalho, Sergey Chekulaev, H.E. Miettinen, Haiyan Wang, J. Perkins, J. F. Bartlett, G. Brooijmans, S. Y. Jun, Vladimir Gavrilov, Greg Landsberg, X. F. Song, J. G. Lu, T. L.T. Thomas, V. Sirotenko, P. Rubinov, Sergey Kuleshov, P. Yamin, K. W. Merritt, N. Amos, Emanuela Barberis, M. Paterno, N. Parashar, A. Boehnlein, O. V. Eroshin, V.V. Abramov, J. H. Christenson, N. Mokhov, S. Mani, Peter W. Draper, E. Gallas, V. Manankov, M. M. Baarmand, Sarah Catherine Eno, P. Hanlet, G. Watts, E. Nagy, F. Nang, R. K. Shivpuri, Arnaud Lucotte, Suman Bala Beri, Randy Ruchti, Y. Fisyak, A. Jonckheere, D. Edmunds, Andre Sznajder, Yuri Gershtein, L. Oesch, L. Babukhadia, B. Connolly, Richard Breedon, H. Greenlee, M. Mostafa, A. N. Galyaev, D. K. Cho, Daniel R Claes, A. Schwartzman, M. Merkin, L. Sawyer, A. Bross, Raymond Brock, Boaz Klima, E. Kajfasz, S. Willis, T. McKibben, J. Yu, P. Z. Quintas, B. G. Pope, Elizaveta Shabalina, G. Gutierrez, S. Grinstein, S. A. Jerger, H. E. Montgomery, W. G. Cobau, S. Tentindo-Repond, J. McDonald, Philip Baringer, F. Lehner, S. Banerjee, D. Mihalcea, J. M. Hauptman, Cecilia Elena Gerber, V. V. Babintsev, G. Ginther, Jianming Qian, G. Briskin, Jeffrey F. Krane, T. Joffe-Minor, L. J. Pan, Z. Zhou, J. Solomon, Qiming Li, E. Flattum, R. Gilmartin, S. Krzywdzinski, U. Bassler, Alberto Santoro, D. Toback, and M. I. Martin

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, General Physics and Astronomy, Parton, HERA, Deep inelastic scattering, 01 natural sciences, Nuclear physics, Pomeron, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Resummation, Nuclear Experiment, 010306 general physics
Abstract

Inclusive dijet production at large pseudorapidity intervals (Delta eta) between the two jets has been suggested as a regime for observing Balitsky-Fadin-Kuraev-Lipatov (BFKL) dynamics. We have measured the dijet cross section for large Delta eta in p (p) over bar collisions at root s = 1800 and 630 GeV using the D0 detector. The partonic cross section increases strongly with the size of Delta eta; The observed growth is even stronger than expected on the basis of BFKL resummation in the leading logarithmic approximation. The growth of the partonic cross section can be accommodated with an effective BFKL intercept of alpha(BFKL)(20 GeV) = 1.65 +/- 0.07.

Published
2000

20. Small-Angle Muon and Bottom-Quark Production inpp¯Collisions at√s=1.8TeV

Author

Cecilia Elena Gerber, V. V. Babintsev, G. Ginther, Jianming Qian, P. Hanlet, D. Coppage, M. Sosebee, T. McMahon, G. Briskin, B. May, J. Bantly, Jeffrey F. Krane, P. I. Goncharov, S. Youssef, S. Choi, C. Miao, Neeti Parashar, H. L. Melanson, P. Z. Quintas, A. Sanchez-Hernandez, S. Reucroft, Andrew Brandt, R. Engelmann, M. Zielinski, Robert Kehoe, B. Gobbi, V. Zutshi, I. Adam, P. Rubinov, T. Joffe-Minor, Anurag Gupta, Andrew White, R. K. Shivpuri, P. Grudberg, C. Klopfenstein, E. A. Kozlovsky, H.E. Miettinen, M. Tartaglia, K. W. Merritt, Kaushik De, B. Gibbard, H. E. Fisk, J. H. Christenson, J. F. Bartlett, V. Manankov, Elizabeth Gallas, Jasvinder A. Singh, M. Abolins, Y. Fisyak, Pushpalatha C Bhat, C. Yoshikawa, J. Sculli, L. Magaña-Mendoza, Z. Zhou, J. Solomon, John Hobbs, Nikos Varelas, Heriberto Castilla-Valdez, K. M. Mauritz, Stephen Wimpenny, G. Eppley, Marvin Johnson, N. Amos, P.F. Ermolov, T. Marshall, Young-Sang Yu, C. S. Mishra, T. Fahland, N. K. Mondal, Darien Wood, B. Knuteson, X. F. Song, B. Pawlik, Nicholas John Hadley, K. Gounder, V. S. Burtovoi, S. Blessing, K. A. Johns, M. Merkin, M. Bhattacharjee, A. V. Kozelov, S. P. Denisov, L. Babukhadia, P. Bloom, J. A. Wightman, N. I. Bojko, Scott Snyder, R. Markeloff, E. Flattum, H. da Motta, J. G.R. Lima, S. N. Gurzhiev, G. Guglielmo, M. A.C. Cummings, H. T. Diehl, H. Singh, A. Boehnlein, R. Hernández-Montoya, N. Sotnikova, M. R. Krishnaswamy, E. G. Zverev, F. Hsieh, K. S. Hahn, L. Lueking, S. A. Jerger, A. Leflat, Richard Breedon, Raymond Brock, Boaz Klima, R. D. Martin, T. Heuring, J. Ellison, D. Casey, J. Kotcher, D. Cutts, M. L. Stevenson, Vasken Hagopian, E. Smith, A. Para, Wagner Carvalho, M. Fortner, N. W. Reay, J. Perkins, A. K.A. Maciel, M. Chung, B. Hoeneisen, Lee Sawyer, Sergey Chekulaev, J. G. Lu, J. V.D. Wirjawan, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, W. G. Cobau, M. I. Martin, Sharon Hagopian, D. Norman, Viatcheslav Stolin, H. Piekarz, H. Weerts, A. S. Ito, Lev Dudko, K. Del Signore, Greg Landsberg, H. D. Wahl, M. Zanabria, T. L. Geld, Winston Ko, Meenakshi Narain, S. Willis, B. Baldin, N. Graf, J. McKinley, Joan A. Guida, J. McDonald, Emanuela Barberis, S. Fuess, Alberto Santoro, Seong Keun Kim, D. Toback, A. Narayanan, Y. Ducros, M. Paterno, T. Yasuda, A. Baden, G. Di Loreto, G. C. Blazey, Y. M. Park, K. Streets, Vipin Bhatnagar, Philip Baringer, V. Oguri, L. T. Goss, D. Denisov, R. Partridge, Vladimir Gavrilov, Gordon Watts, Allan G Clark, V. Sirotenko, M. H.G. Souza, D. P. Stoker, S.A. Kahn, S. Banerjee, Sergey Kuleshov, Howard Gordon, V. Akimov, K. C. Frame, Victor Daniel Elvira, M. Demarteau, Y. Kulik, R. Yamada, P. Gartung, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, Dan Green, A. N. Galyaev, S. H. Ahn, O. Ramirez, R. Piegaia, Shuichi Kunori, P. M. Tuts, O. V. Eroshin, Phillip Gutierrez, F. Stichelbaut, J. Warchol, P. Yepes, H. E. Montgomery, R. Snihur, V. Vaniev, T. McKibben, D. K. Cho, N. R. Stanton, R. W. Stephens, Orin I. Dahl, F. Landry, John Rutherfoord, Mary Beth Adams, R. J. Genik, J. Womersley, Robert Hirosky, V.V. Abramov, H. Haggerty, H. S. Mao, D. L. Adams, Matthew Jones, A. Jonckheere, W. E. Cooper, Daniel R Claes, R. Jesik, James C. Green, D. Karmanov, D. Buchholz, A. P. Vorobiev, Stephan Linn, C. Cretsinger, Arnaud Lucotte, N. Oshima, W. Y. Chen, G. Gutierrez, Gilvan Alves, D. Edmunds, F. Borcherding, M. Strovink, P. Tamburello, Daria Zieminska, R. D. Schamberger, M. A. Kubantsev, R. L. McCarthy, B. G. Pope, N. Parua, Randy Ruchti, Brajesh C Choudhary, S. Chopra, Anna Goussiou, V. S. Narasimham, Thomas G Trippe, Gregory R Snow, Miguel Mostafa, A. A. Mayorov, M. M. Baarmand, Elizaveta Shabalina, Sarah Catherine Eno, P. Yamin, M. K. Fatyga, G. Steinbrück, Andre Sznajder, Yuri Gershtein, J. Snow, S. Mani, Bobby Samir Acharya, H. A. Neal, Peter Nemethy, M. Roco, H. C. Shankar, J. T. Linnemann, J. T. White, R. Madden, F. Nang, Peter W. Draper, Richard B. Lipton, K. Yip, M. D. Peters, S. Feher, Jinhong Yu, L. Oesch, A.S. Dyshkant, Michael A. Strauss, K. M. Chan, Dhiman Chakraborty, A. Zieminski, C. Boswell, Suman Bala Beri, R. A. Sidwell, S. Y. Jun, T. L.T. Thomas, H. Tong, Rajendran Raja, Brad Abbott, R. J. Madaras, J. M. Guida, D. Hedin, Chris Hays, V. A. Bezzubov, J. P. Negret, R. P. Smith, Michael Shupe, J. Estrada, A. V. Kotwal, Harrison Prosper, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, V. N. Evdokimov, D.S. Koltick, E. W. Anderson, Q. Z. Li, Allen Mincer, Sebastian Grinstein, A. V. Kostritskiy, Sissel Hansen, S. Krzywdzinski, L. Coney, A. Zylberstejn, P. Padley, Alexey Volkov, James H Cochran, H. Greenlee, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, B. Gómez, Z. H. Zhu, A. Bross, Shashikant Dugad, Alexander Belyaev, Serban Protopopescu, D. Fein, Don Lincoln, Erich Varnes, Patrick Slattery, Daniel John Karmgard, C. Hebert, Jing Li, N.V. Mokhov, G. E. Forden, A. P. Heinson, R. E. Hall, J. L. González Solís, Z. Casilum, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, M. Diesburg, D. Owen, J. Tarazi, D. A. Stoyanova, Gervasio Gomez, C. Shaffer, D. Cullen-Vidal, K. Genser, D. Shpakov, and J. M. Hauptman

Subjects
Quark, Quantum chromodynamics, Physics, Particle physics, Muon, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Jet (particle physics), Bottom quark, Nuclear physics, Physics::Accelerator Physics, High Energy Physics::Experiment, Rapidity, Fermilab
Abstract

This Letter describes a measurement of the muon cross section originating from b quark decay in the forward rapidity range 2.4 < y(mu) < 3.2 in pbarp collisions at sqrt(s) = 1.8 TeV. The data used in this analysis were collected by the D0 experiment at the Fermilab Tevatron. We find that NLO QCD calculations underestimate b quark production by a factor of four in the forward rapidity region. A cross section measurement using muon+jet data has been included in this version of the paper.

Published
2000

21. Differential Production Cross Section ofZBosons as a Function of Transverse Momentum ats=1.8TeVTeV

Author

C. Cretsinger, T. Fahland, A. Baden, R. K. Shivpuri, M. Strovink, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, G. C. Blazey, M. Diesburg, R. Yamada, D. Owen, Ron Lipton, J. Womersley, J. Tarazi, E. G. Zverev, M. Tartaglia, Kaushik De, S. H. Ahn, M. H.G. Souza, P. Yepes, H. E. Montgomery, E. W. Anderson, T. McMahon, E. Flattum, J. M. Hauptman, Cecilia Elena Gerber, H. L. Melanson, P. Z. Quintas, Orin I. Dahl, F. Landry, John Rutherfoord, D. Karmanov, Q. Z. Li, Mary Beth Adams, V. V. Babintsev, G. Ginther, E. Smith, Allan G Clark, D. Edmunds, J. H. Christenson, Allen Mincer, K. M. Mauritz, P.F. Ermolov, Jianming Qian, S. A. Jerger, Sebastian Grinstein, Andre Sznajder, Meenakshi Narain, H. Tong, Brajesh C Choudhary, P. Gartung, V. S. Burtovoi, James C. Green, Yuri Gershtein, D. Buchholz, P. Tamburello, R. Snihur, S. Chopra, Anna Goussiou, G. Briskin, L. Lueking, Jeffrey F. Krane, M. D. Peters, Gregory R Snow, Andrew White, Rajendran Raja, A. Leflat, A. Narayanan, P. Grudberg, Chris Hays, L. Oesch, K. Del Signore, Stephen Wimpenny, P. Padley, B. May, Alexey Volkov, W. G. Cobau, M. I. Martin, Elizabeth Gallas, F. Borcherding, Michael A. Strauss, Brad Abbott, G. Eppley, S. Fuess, M. Chung, Heriberto Castilla-Valdez, N.V. Mokhov, James H Cochran, T. Marshall, M. Sosebee, A. Jonckheere, K. Streets, Vipin Bhatnagar, A. P. Vorobiev, John Hobbs, Young-Sang Yu, V. A. Bezzubov, Darien Wood, Nicholas John Hadley, Alexander Belyaev, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, J. Bantly, C. Boswell, J. McDonald, H. D. Wahl, M. Zanabria, Winston Ko, G. E. Forden, A. P. Heinson, S. Feher, B. Gobbi, Anurag Gupta, J. P. Negret, R. P. Smith, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, Stephan Linn, D. P. Stoker, B. Gómez, Z. H. Zhu, Alberto Santoro, Suman Bala Beri, Vladimir Gavrilov, A. Zieminski, Shashikant Dugad, N. Oshima, S. Blessing, Scott Snyder, R. Markeloff, Andrew Brandt, Daria Zieminska, R. D. Schamberger, Jasvinder A. Singh, Philip Baringer, Gordon Watts, V. Sirotenko, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, K. Yip, Michael Shupe, R. Partridge, Patrick Slattery, D. A. Stoyanova, A. N. Galyaev, R. Engelmann, F. Nang, K. S. Hahn, D. Cutts, Seong Keun Kim, D. Toback, O. V. Eroshin, Gervasio Gomez, T. Yasuda, Wagner Carvalho, A. V. Kostritskiy, S. Banerjee, R. E. Hall, J. L. González Solís, Z. Casilum, E. A. Kozlovsky, H.E. Miettinen, M. A. Kubantsev, K. M. Chan, Dhiman Chakraborty, S. N. Gurzhiev, Jinhong Yu, T. Joffe-Minor, A.S. Dyshkant, R. A. Sidwell, Sissel Hansen, S. Y. Jun, T. L.T. Thomas, J. Estrada, Phillip Gutierrez, H. da Motta, J. G.R. Lima, A. S. Ito, Greg Landsberg, Richard Breedon, Pushpalatha C Bhat, H. E. Fisk, L. Coney, C. Klopfenstein, K. Gounder, B. Gibbard, H. S. Mao, D. L. Adams, Z. Zhou, J. Solomon, M. Bhattacharjee, F. Stichelbaut, T. L. Geld, D. K. Cho, C. Shaffer, D. Cullen-Vidal, K. Genser, A. V. Kotwal, Harrison Prosper, T. McKibben, N. R. Stanton, V.V. Abramov, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, J. Sculli, M. Paterno, Y. Fisyak, Viatcheslav Stolin, Sharon Hagopian, D. Fein, J. McKinley, K. A. Johns, Nikos Varelas, W. E. Cooper, T. Heuring, Marvin Johnson, R. L. McCarthy, Matthew Jones, B. Pawlik, R. Jesik, L. Babukhadia, Daniel R Claes, B. Knuteson, X. F. Song, A. V. Kozelov, Y. M. Park, S.A. Kahn, R. Hernández-Montoya, D. Casey, J. Kotcher, Peter Nemethy, M. Roco, Don Lincoln, Erich Varnes, R. Piegaia, T. Rockwell, Iain Alexander Bertram, Arnaud Lucotte, M. Demarteau, N. Sotnikova, Michael Rijssenbeek, B. G. Pope, N. Graf, Y. Kulik, Daniel John Karmgard, N. Parua, Randy Ruchti, V. Oguri, V. N. Evdokimov, C. S. Mishra, D.S. Koltick, R. J. Genik, L. Magaña-Mendoza, G. Guglielmo, P. Yamin, Neeti Parashar, Elizaveta Shabalina, Vasken Hagopian, M. Merkin, C. Hebert, H. Weerts, J. Warchol, Lev Dudko, R. J. Madaras, M. Zielinski, Raymond Brock, Boaz Klima, S. Mani, Joan A. Guida, D. Norman, S. Willis, J. M. Guida, D. Hedin, R. Madden, G. Di Loreto, Peter W. Draper, D. Denisov, J. V.D. Wirjawan, M. Abolins, J. T. White, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, Dan Green, N. K. Mondal, H. T. Diehl, H. Singh, A. Boehnlein, J. Ellison, A. K.A. Maciel, Shuichi Kunori, V. Vaniev, Jing Li, D. Shpakov, P. Hanlet, S. Krzywdzinski, M. Fortner, N. W. Reay, D. Coppage, J. Perkins, A. Zylberstejn, S. Reucroft, S. Youssef, J. G. Lu, S. Choi, H. Greenlee, C. Yoshikawa, A. Bross, P. M. Tuts, R. W. Stephens, Serban Protopopescu, A. Sanchez-Hernandez, Robert Hirosky, Robert Kehoe, W. Y. Chen, G. Gutierrez, Gilvan Alves, V. Zutshi, V. S. Narasimham, Thomas G Trippe, A. A. Mayorov, M. K. Fatyga, G. Steinbrück, J. Snow, I. Adam, P. Rubinov, B. Baldin, K. W. Merritt, J. F. Bartlett, V. Manankov, Y. Ducros, Howard Gordon, V. Akimov, K. C. Frame, O. Ramirez, S. P. Denisov, Sergey Kuleshov, N. Amos, M. R. Krishnaswamy, F. Hsieh, P. I. Goncharov, A. Para, Sergey Chekulaev, Victor Daniel Elvira, P. Bloom, J. A. Wightman, C. Miao, Emanuela Barberis, N. I. Bojko, R. D. Martin, L. T. Goss, M. L. Stevenson, H. Haggerty, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, and H. Piekarz

Subjects
Quantum chromodynamics, Physics, Particle physics, High Energy Physics::Phenomenology, Monte Carlo method, Tevatron, General Physics and Astronomy, D0 experiment, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Resummation, Collider, Boson
Abstract

We present a measurement of the transverse momentum distribution of Z bosons produced in ppbar collisions at sqrt{s}=1.8 TeV using data collected by the D0 experiment at the Fermilab Tevatron Collider during 1994--1996. We find good agreement between our data and a current resummation calculation. We also use our data to extract values of the non-perturbative parameters for a particular version of the resummation formalism, obtaining significantly more precise values than previous determinations.

Published
2000

22. Isolated Photon Cross Section inpp¯Collisions at√s=1.8TeV

Author

J. A. Wightman, N. I. Bojko, R. D. Martin, J. M. Hauptman, Cecilia Elena Gerber, V. V. Babintsev, N.V. Mokhov, G. Ginther, E. Popkov, C. Klopfenstein, M. L. Stevenson, Jianming Qian, G. Briskin, A. P. Heinson, Chris Hays, V. A. Bezzubov, R. E. Hall, C. S. Mishra, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, J. L. González Solís, B. May, G. Guglielmo, F. Fleuret, Z. Casilum, J. Womersley, P. Yamin, J. P. Negret, R. P. Smith, Michael Shupe, D. Buchholz, H. A. Neal, H. C. Shankar, V. Sorín, K. Yip, L. Stutte, Jinhong Yu, A.S. Dyshkant, B. Knuteson, X. F. Song, Raymond Brock, Boaz Klima, B. Gobbi, A. Baden, D. Norman, D. Karmanov, S. Negroni, E. G. Zverev, Brajesh C Choudhary, J. Estrada, Suyong Choi, Vasken Hagopian, S. Mani, Stephen Wimpenny, A. R. Clark, T. Marshall, D. Fein, N. Sotnikova, R. J. Genik, M. Fortner, N. W. Reay, J. Perkins, J. G. Lu, A. V. Kotwal, Harrison Prosper, Don Lincoln, Daniel John Karmgard, C. Hebert, G. C. Blazey, R. Yamada, U. Bassler, S. H. Ahn, H. Weerts, Meenakshi Narain, Lev Dudko, Andrew White, Peter W. Draper, Darien Wood, Shuichi Kunori, Nicholas John Hadley, K. A. Johns, V. Vaniev, S. Blessing, Scott Snyder, S. Willis, S. Chopra, Anna Goussiou, L. Lueking, S. P. Denisov, Anurag Gupta, S. Feher, S. Youssef, D. A. Stoyanova, Jing Li, S. Krzywdzinski, Orin I. Dahl, John Rutherfoord, P. Grudberg, G. Di Loreto, A. Jonckheere, R. Markeloff, Gregory R Snow, Gregorio Bernardi, D. Denisov, Alberto Santoro, A. N. Galyaev, M. R. Krishnaswamy, A. P. Vorobiev, Stephan Linn, A. Zieminski, Robert Kehoe, A. Zylberstejn, V. Zutshi, R. J. Madaras, H. Haggerty, K. Del Signore, D. K. Cho, D. Shpakov, J. V.D. Wirjawan, Srinivasan Rajagopalan, F. Lehner, K. M. Mauritz, P.F. Ermolov, H. Greenlee, A. Bross, M. Merkin, N. Oshima, Daria Zieminska, E. Kajfasz, V.V. Abramov, H. D. Wahl, F. Hsieh, John Hobbs, D. Hedin, H. Zheng, P. Hanlet, Hal Evans, Thomas Ferbel, M. Sosebee, K. Streets, V. S. Burtovoi, Matthew Jones, P. Padley, Serban Protopopescu, Arnaud Lucotte, T. Heuring, M. R. Adams, Young-Sang Yu, D. Coppage, A. Para, W. E. Cooper, Sergey Chekulaev, P. M. Tuts, R. W. Stephens, M. Zanabria, Winston Ko, R. A. Sidwell, S. Y. Jun, T. L.T. Thomas, M. A. Kubantsev, P. I. Goncharov, Alexey Volkov, V. Oguri, B. Baldin, Gervasio Gomez, T. Fahland, Elemer Nagy, Emanuela Barberis, Vipin Bhatnagar, B. Gibbard, J. Sculli, D. Toback, T. Joffe-Minor, H. E. Fisk, L. T. Goss, T. Rockwell, Iain Alexander Bertram, Z. Zhou, J. Solomon, K. Genser, Robert Hirosky, Pushpalatha C Bhat, C. Miao, Y. Ducros, J. B. Singh, K. Gounder, James H Cochran, J. Bantly, Nikos Varelas, R. K. Shivpuri, Michael Rijssenbeek, Rajendran Raja, B. Olivier, D. P. Stoker, N. Parua, Gustaaf Brooijmans, Mitchell Wayne, H. Schellman, J. M. Kohli, E. Flattum, D. R. Claes, P. van Gemmeren, M. Tartaglia, R. Gilmartin, W. Y. Chen, G. Gutierrez, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, Y. Kulik, Randy Ruchti, D. Cullen-Vidal, J. Warchol, R. Partridge, Gilvan Alves, Kaushik De, Brad Abbott, Sergey Kuleshov, Stefan Grünendahl, G. Steinbrück, Ariel Schwartzman, S. Reucroft, E. Smith, V. N. Evdokimov, D.S. Koltick, T. Yasuda, S. R. Dugad, J. Thompson, A. Patwa, Victor Daniel Elvira, M. Abolins, J. T. Linnemann, Andrew Brandt, R. Engelmann, Vladimir Gavrilov, V. S. Narasimham, Thomas G Trippe, S.A. Kahn, M. Demarteau, Gordon Watts, V. Sirotenko, B. Gómez, Elizabeth Gallas, T. McMahon, Howard Gordon, V. Akimov, H. Jostlein, O. V. Eroshin, E. A. Kozlovsky, H.E. Miettinen, Z. H. Zhu, K. C. Frame, Phillip Gutierrez, Y. Fisyak, R. D. Schamberger, P. Gartung, L. Babukhadia, J. Snow, Marvin Johnson, P. Rubinov, M. H.G. Souza, A. V. Kozelov, H. S. Mao, K. W. Merritt, Alexander Belyaev, J. F. Bartlett, B. S. Acharya, V. Manankov, A. S. Turcot, A. A. Mayorov, N. K. Mondal, Sharon Hagopian, H. T. Diehl, H. Singh, Patrick Slattery, H. E. Montgomery, M. Strovink, N. Amos, J. Krane, A. Boehnlein, A. V. Kostritskiy, M. Bhattacharjee, Sissel Hansen, Y. Pischalnikov, Ulrich Heintz, J. Ellison, A. K.A. Maciel, D. Green, R. Piegaia, S. Fuess, R. Snihur, L. Coney, H. L. Melanson, P. Z. Quintas, N. Sen, M. Diesburg, S. N. Gurzhiev, R. L. McCarthy, S. K. Kim, D. Owen, J. Tarazi, J. H. Christenson, Viatcheslav Stolin, C. Lundstedt, M. Roco, David H. Adams, G. Eppley, H. da Motta, J. G.R. Lima, K. M. Chan, Dhiman Chakraborty, A. S. Ito, F. Stichelbaut, V. Buescher, Neeti Parashar, M. Zielinski, Heriberto Castilla-Valdez, B. Pawlik, E. W. Anderson, D. Casey, J. Kotcher, Q. Z. Li, Allen Mincer, Sebastian Grinstein, Michael A. Strauss, B. G. Pope, Suman Bala Beri, Elizaveta Shabalina, Richard Breedon, J. T. White, T. McKibben, N. R. Stanton, R. Jesik, M. Chung, D. Edmunds, S. A. Jerger, A. Leflat, Andre Sznajder, W. G. Cobau, M. I. Martin, Yuri Gershtein, M. D. Peters, L. Oesch, J. McDonald, Philip Baringer, S. Banerjee, N. Graf, James C. Green, K. S. Hahn, D. Cutts, Wagner Carvalho, Greg Landsberg, B. Connolly, M. Paterno, F. Borcherding, Miguel Mostafa, M. M. Baarmand, Sarah Catherine Eno, F. Nang, and Richard B. Lipton

Subjects
Quantum chromodynamics, Physics, Photon, Secondary education, Meson, 010308 nuclear & particles physics, Information storage, Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, Nuclear physics, Transverse plane, Cross section (physics), 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Research method
Abstract

We report a new measurement of the cross section for the production of isolated photons, with transverse energies (ET) above 10 GeV and pseudorapidities |eta| 36 GeV.

Published
2000

23. Search for Second Generation Leptoquark Pairs Decaying toμν+jetsinpp¯Collisions at√s=1.8TeV

Author

H. da Motta, J. G.R. Lima, C. Murphy, T. Heuring, D. Buchholz, Y. Kulik, S. Krzywdzinski, A. Zylberstejn, A. S. Ito, M. Chung, B. May, H. Greenlee, P. Tamburello, Pushpalatha C Bhat, B. Gobbi, S. Chopra, Anurag Gupta, T. Yasuda, A. Bross, Anna Goussiou, E. W. Anderson, R. Snihur, K. Gounder, P. Bloom, K. S. Hahn, J. A. Wightman, Serban Protopopescu, Joan A. Guida, F. Stichelbaut, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, Q. Z. Li, D. A. Stoyanova, R. Hernández Montoya, J. V.D. Wirjawan, L. Lueking, Gregory R Snow, S. R. Dugad, D. Green, D. Cutts, Andrew White, Allen Mincer, N. I. Bojko, H. D. Wahl, R. D. Martin, T. Rockwell, Iain Alexander Bertram, H. L. Melanson, P. Z. Quintas, Stephen Wimpenny, Michael Rijssenbeek, N.V. Mokhov, Howard Gordon, V. Akimov, G. Di Loreto, K. Del Signore, Sebastian Grinstein, Winston Ko, V.V. Abramov, P. Grudberg, K. Genser, Gervasio Gomez, K. C. Frame, O. Ramirez, B. Knuteson, G. E. Forden, A. P. Heinson, B. Zhang, D. Denisov, S. K. Kim, Greg Landsberg, A. R. Clark, Y. M. Park, M. H.G. Souza, J. H. Christenson, Matthew Jones, T. Marshall, V. N. Evdokimov, A. V. Kostritskiy, Sissel Hansen, D.S. Koltick, J. T. Linnemann, Chris Hays, Srinivasan Rajagopalan, Hal Evans, Thomas Ferbel, S.A. Kahn, M. Demarteau, H. A. Neal, H. C. Shankar, S. P. Denisov, M. L. Stevenson, V. A. Bezzubov, J. P. Negret, R. P. Smith, K. Yip, Elizabeth Gallas, H. Jostlein, M. R. Krishnaswamy, J. Mc Kinley, Rajendran Raja, John Hobbs, Michael Shupe, L. Magaña-Mendoza, Brad Abbott, T. L. Geld, Arnaud Lucotte, Darien Wood, R. E. Hall, J. L. González Solís, Z. Casilum, F. Hsieh, L. Coney, M. R. Adams, P. Yepes, H. E. Montgomery, D. Shpakov, Dhiman Chakraborty, Young-Sang Yu, Jinhong Yu, C. Klopfenstein, A.S. Dyshkant, K. M. Mauritz, P. M. Tuts, R. W. Stephens, C. Shaffer, D. Cullen-Vidal, T. Fahland, A. V. Kotwal, Harrison Prosper, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, A. Para, Nicholas John Hadley, D. Fein, Robert Hirosky, Sergey Chekulaev, H. Piekarz, M. Paterno, Sharon Hagopian, P.F. Ermolov, S. Blessing, S. Feher, L. Babukhadia, A. Jonckheere, Neeti Parashar, N. Parua, Scott Snyder, N. N. Biswas, Randy Ruchti, R. Piegaia, Don Lincoln, Erich Varnes, W. Y. Chen, P. Padley, E. Flattum, P. Hanlet, A. P. Vorobiev, Stephan Linn, M. Zielinski, G. Gutierrez, Gilvan Alves, I. Adam, P. Rubinov, V. S. Burtovoi, Alexey Volkov, B. Pawlik, A. Baden, C. S. Mishra, G. Guglielmo, James H Cochran, Daniel John Karmgard, Meenakshi Narain, K. W. Merritt, N. Oshima, Daria Zieminska, R. Markeloff, S. Youssef, R. J. Madaras, Mitchell Wayne, H. Schellman, J. M. Kohli, S. Choi, C. Hebert, V. S. Narasimham, Thomas G Trippe, D. Coppage, J. Womersley, J. F. Bartlett, V. Manankov, A. Zieminski, Stefan Grünendahl, J. Thompson, V. Oguri, M. A. Kubantsev, G. C. Blazey, E. Smith, A. A. Mayorov, Vasken Hagopian, H. Weerts, J. M. Guida, B. Gómez, S. N. Gurzhiev, D. Hedin, Z. H. Zhu, D. Karmanov, M. K. Fatyga, G. Steinbrück, A. Sanchez-Hernandez, D. Casey, N. Sotnikova, Robert Kehoe, J. Kotcher, J. Snow, R. Yamada, S. H. Ahn, B. Gibbard, E. G. Zverev, Brajesh C Choudhary, R. A. Sidwell, Peter Nemethy, M. Roco, A. Narayanan, J. Warchol, M. Sosebee, V. Zutshi, Lev Dudko, Jing Li, S. Y. Jun, T. L.T. Thomas, P. Gartung, D. Edmunds, Viatcheslav Stolin, Raymond Brock, Heriberto Castilla-Valdez, N. Graf, Orin I. Dahl, F. Landry, John Rutherfoord, J. Sculli, B. S. Acharya, Boaz Klima, K. Streets, Vipin Bhatnagar, B. G. Pope, R. Partridge, Andre Sznajder, Yuri Gershtein, Y. Pischalnikov, Ulrich Heintz, J. Bantly, Vladimir Gavrilov, Nikos Varelas, R. K. Shivpuri, M. D. Peters, S. Reucroft, Gordon Watts, V. Sirotenko, Elizaveta Shabalina, Y. Fisyak, R. Mc Carthy, H. S. Mao, D. Norman, D. R. Claes, D. L. Adams, O. V. Eroshin, M. Diesburg, C. Yoshikawa, Phillip Gutierrez, James C. Green, M. Tartaglia, F. Borcherding, J. T. White, B. Baldin, D. Owen, L. Oesch, Kaushik De, Y. Ducros, Andrew Brandt, J. Tarazi, Marvin Johnson, R. Engelmann, M. Merkin, S. Willis, J. M. Hauptman, J. B. Singh, A. V. Kozelov, E. A. Kozlovsky, H.E. Miettinen, C. K. Jung, Michael A. Strauss, A. N. Galyaev, Miguel Mostafa, N. R. Stanton, M. M. Baarmand, Sergey Kuleshov, Sarah Catherine Eno, T. Mc Kibben, Cecilia Elena Gerber, C. Cretsinger, V. V. Babintsev, Victor Daniel Elvira, M. Strovink, Jianming Qian, W. E. Cooper, F. Nang, Richard B. Lipton, Alexander Belyaev, R. Jesik, C. Boswell, A. L. Lyon, G. Briskin, M. Bhattacharjee, Shuichi Kunori, K. A. Johns, Tong Hu, V. Vaniev, S. A. Jerger, A. Leflat, T. Mc Mahon, P. I. Goncharov, Suman Bala Beri, D. P. Stoker, W. G. Cobau, M. I. Martin, C. Miao, G. Wang, Alberto Santoro, H. Haggerty, Richard Breedon, D. Toback, J. Mc Donald, T. Joffe-Minor, Wagner Carvalho, H. E. Fisk, Philip Baringer, Z. Zhou, J. Solomon, R. J. Genik, S. Banerjee, M. Fortner, N. W. Reay, J. Perkins, M. Abolins, P. Mooney, N. K. Mondal, H. T. Diehl, H. Singh, J. Krane, A. Boehnlein, J. Ellison, A. K.A. Maciel, Emanuela Barberis, S. Fuess, L. T. Goss, R. D. Schamberger, N. Amos, P. Yamin, S. Mani, R. Madden, Peter W. Draper, and G. Eppley

Subjects
Physics, Quark, Particle physics, Muon, High Energy Physics::Phenomenology, General Physics and Astronomy, Charm quark, Massless particle, Particle decay, Pair production, High Energy Physics::Experiment, Leptoquark, Nuclear Experiment, Lepton
Abstract

We report on a search for second generation leptoquarks (LQ) produced in p (p) over bar collisions at root s = 1.8 TeV using the DO detector at Fermilab. Second generation leptoquarks are assumed to be produced in pairs and to decay to either mu. or nu and either a strange or a charm quark (q). Limits an placed on sigma(p (p) over bar --> LQ --> mu nu + jets) as a function of the mass of the leptoquark. For equal branching ratios to mu q and nu q, second generation scalar leptoquarks with a mass below 160 GeV/c(2), vector leptoquarks with anomalous minimal vector couplings with a mass below 240 GeV/c(2), and vector leptoquarks with Yang-Mills couplings with a mass below 290 GeV/c(2), are excluded at the 95% confidence level.

Published
1999

24. Dijet Mass Spectrum and a Search for Quark Compositeness inp¯pCollisions at√s=1.8TeV

Author

S. M. Chang, Robert Hirosky, P. Bloom, J. A. Wightman, N. I. Bojko, W. Y. Chen, M. H.G. Souza, P. Yepes, R. Piegaia, M. I. Martin, Dhiman Chakraborty, V. S. Narasimham, I. Adam, P. Rubinov, Vasken Hagopian, H. Weerts, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, S.H. Ahn, P. Padley, Alexey Volkov, R. K. Shivpuri, Lev Dudko, A. A. Mayorov, U. Heintz, M. K. Fatyga, K. W. Merritt, James H Cochran, Mitchell Wayne, S. Rajagopalan, V. Manankov, R. Raja, A. S. Ito, N. Parua, V.V. Abramov, H. Schellman, J. M. Kohli, Stephan Linn, N. Oshima, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, Arnaud Lucotte, K. Yip, V. A. Bezzubov, H. Jöstlein, R. D. Schamberger, M. Narain, G. Eppley, R. P. Smith, B. Baldin, R. Jesik, A. Brandt, J. Thompson, Michael Shupe, M. Bhattacharjee, T. G. Trippe, H. da Motta, S. Protopopescu, Sharon Hagopian, A. K.A. Maciel, J. Snow, Randy Ruchti, W. E. Cooper, A.S. Dyshkant, E. Oltman, D. Zieminska, S. Fuess, Z. H. Zhu, J. H. Christenson, M. Mostafa, M. Diesburg, M. Peters, A. Zylberstejn, P. Mooney, K. Gounder, C. Klopfenstein, S. Grinstein, K. M. Mauritz, M. Abolins, Gordon Watts, V. Sirotenko, S. Grünendahl, Shashikant Dugad, O. V. Eroshin, E. Smith, C. S. Mishra, B. Lauer, P.F. Ermolov, Phillip Gutierrez, T. McKibben, J. Yu, S. Hansen, F. Stichelbaut, B. Zhang, L. Magaña-Mendoza, M. A.C. Cummings, J. Jaques, Kaushik De, J. T. White, A. V. Kotwal, D. Stewart, Harrison Prosper, S. N. Gurzhiev, Ron Lipton, N. K. Mondal, H. T. Diehl, V. S. Burtovoi, M. L. Stevenson, T. Joffe-Minor, S. Youssef, S. Choi, M. Merkin, M. Demarteau, H. Singh, Andrew White, Brad Abbott, C. Murphy, G. Guglielmo, A. Sanchez-Hernandez, R. Astur, J. Womersley, Heriberto Castilla-Valdez, J. Warchol, A. L. Lyon, P. Z. Quintas, Alexander Vorobiev, S. P. Denisov, P. Grudberg, Robert Kehoe, K. Del Signore, Matthew Jones, T. Heuring, E. G. Zverev, M. R. Krishnaswamy, J. Ellison, D. Karmanov, A. Bross, Raymond Brock, Boaz Klima, Elizabeth Gallas, Q. Z. Li-Demarteau, Eunil Won, F. Hsieh, A. R. Clark, Shuichi Kunori, R. Hernández-Montoya, Hiroaki Aihara, L. Sawyer, P. C. Bhat, F. Lobkowicz, G. E. Forden, A. P. Heinson, Y. Fisyak, Y. Ducros, N. Sotnikova, Sergey Chekulaev, R. J. Madaras, J. V. D. Wirjawan, D. Norman, T. McMahon, E. W. Anderson, Z. Zhou, J. Solomon, R. L. McCarthy, T. Marshall, P. M. Tuts, D. Buchholz, Edilamar Menezes de Oliveira, C. K. Jung, V. Stolin, D. Casey, A. Boehnlein, J. Krane, Brajesh C Choudhary, Y. Pischalnikov, Victor Daniel Elvira, K. A. Johns, V. Vaniev, K. Genser, L. Babukhadia, P. Tamburello, R. E. Hall, J. L. González Solís, M. Zielinski, R. W. Stephens, S. Feher, S. Willis, O. I. Dahl, B. Gibbard, H. D. Wahl, V. Oguri, A. Para, A. N. Galyaev, Z. Casilum, Winston Ko, N. Graf, T. Huehn, Joan A. Guida, D. Owen, John Hobbs, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, S. Mani, E. Flattum, K. Streets, Vipin Bhatnagar, Peter Nemethy, J. Tarazi, Heng Xu, Anna Goussiou, Y. Zhou, Allen Mincer, P. Yamin, P. Hanlet, S. Kahn, D. Fein, R. Partridge, M. M. Baarmand, Sarah Catherine Eno, L. Lueking, G. Di Loreto, R. Madden, S. Krzywdzinski, F. Borcherding, A. Narayanan, M. Chung, B. Hoeneisen, H. E. Fisk, D. Denisov, H. Haggerty, Gregory R Snow, Young-Sang Yu, Erich Varnes, Z. Wu, Ting Hu, Peter W. Draper, F. Nang, G. Finocchiaro, M. L. Kelly, J. Sculli, M. Sosebee, A. L. Spadafora, L. P. Chen, P. I. Goncharov, Daniel R Claes, Daniel John Karmgard, H. S. Mao, A. Zieminski, K. C. Frame, D. Lincoln, J. Bantly, C. Miao, M. Tartaglia, T. Fahland, D. L. Adams, Nikos Varelas, V. N. Evdokimov, K. S. Hahn, A. V. Kostritskiy, D. Cutts, O. Ramirez, Alexander Belyaev, Thomas Ferbel, P. Gartung, J. G. R. Lima, J. F. Bartlett, H. Gordon, S. Reucroft, Greg Landsberg, Stephen Wimpenny, V. Gavrilov, L. T. Goss, S. Y. Jun, D. A. Stoyanova, T. L.T. Thomas, R. Engelmann, Jing Li, G. Wang, T. L. Geld, Alberto Santoro, E. A. Kozlovsky, H.E. Miettinen, G. Kalbfleisch, M. Paterno, Seong Keun Kim, Gervasio Gomez, L. Coney, B. Pawlik, D. R. Green, J. M. Hauptman, Cecilia Elena Gerber, Darien Wood, A. Baden, G. C. Blazey, Nicholas John Hadley, V. V. Babintsev, R. Yamada, H. L. Melanson, S. Kuleshov, C. Shaffer, D. Cullen-Vidal, N. N. Biswas, Jianming Qian, S. Blessing, S. Chopra, Scott Snyder, R. Markeloff, F. Landry, John Rutherfoord, Tong Hu, J. Kotcher, G. Steinbrück, Mary Beth Adams, M. Roco, J. M. Guida, D. Hedin, B. May, B. Gobbi, Anurag Gupta, Jasvinder A. Singh, D. Koltick, T. Yasuda, B. G. Pope, Michael A. Strauss, Elizaveta Shabalina, G. Gutierrez, S. A. Jerger, A. Leflat, H. E. Montgomery, W. G. Cobau, C. Boswell, J. P. Negret, J. McDonald, Philip Baringer, S. Banerjee, V. Balamurali, B. Gómez, Suman Bala Beri, Marvin Johnson, A. V. Kozelov, C. Cretsinger, Richard Breedon, M. Strovink, E. James, H. Greenlee, Gilvan Alves, J. McKinley, Y. M. Park, Wagner Carvalho, S. C. Loken, D. P. Stoker, D. Vititoe, R. J. Genik, A. Jonckheere, D. Edmunds, N. Amos, Andre Sznajder, Yuri Gershtein, Emanuela Barberis, L. Oesch, N. Mokhov, M. Fortner, J. Perkins, C. Yoshikawa, and R. Snihur

Subjects
Physics, Quark, Quantum chromodynamics, Particle physics, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Jet (particle physics), law.invention, law, Pseudorapidity, Mass spectrum, High Energy Physics::Experiment, Fermilab, Collider
Abstract

Using the DZero detector at the 1.8 TeV pbarp Fermilab Tevatron collider, we have measured the inclusive dijet mass spectrum in the central pseudorapidity region |eta_jet| < 1.0 for dijet masses greater than 200 Gev/c^2. We have also measured the ratio of spectra sigma(|eta_jet| < 0.5)/sigma(0.5 < |eta_jet| < 1.0). The order alpha_s^3 QCD predictions are in good agreement with the data and we rule out models of quark compositeness with a contact interaction scale < 2.4 TeV at the 95% confidence level.

Published
1999

25. Small AngleJ/ψProduction inpp¯Collisions at√s=1.8TeV

Author

H. A. Neal, Robert Hirosky, H. C. Shankar, K. Yip, C. K. Jung, W. Y. Chen, G. Gutierrez, M. Zielinski, A. N. Galyaev, Jinhong Yu, Gilvan Alves, A.S. Dyshkant, George R. Kalbfleisch, V. S. Narasimham, Thomas G Trippe, Meenakshi Narain, Michael A. Strauss, R. Jesik, W. E. Cooper, A. A. Mayorov, Pushpalatha C Bhat, I. Adam, P. Rubinov, Andrew White, D. Stewart, S. N. Gurzhiev, M. K. Fatyga, G. Steinbrück, J. Snow, Viatcheslav Stolin, P. Bloom, J. A. Wightman, K. W. Merritt, P. Grudberg, Q. Z. Li Demarteau, A. L. Spadafora, J. F. Bartlett, V. Manankov, C. Murphy, R. Astur, T. Heuring, C. Boswell, Suman Bala Beri, A. Narayanan, D. Green, A. Baden, G. C. Blazey, R. Yamada, K. Gounder, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, R. Snihur, Emanuela Barberis, L. Lueking, H. L. Melanson, P. Z. Quintas, J. V.D. Wirjawan, Joan A. Guida, G. Di Loreto, D. Denisov, S. A. Jerger, Srinivasan Rajagopalan, Thomas Ferbel, N. I. Bojko, M. H.G. Souza, P. Yepes, H. E. Montgomery, John Hobbs, S. K. Kim, A. Leflat, M. Sosebee, H. D. Wahl, S. M. Chang, S. H. Ahn, R. K. Shivpuri, M. Chung, K. Del Signore, W. G. Cobau, M. I. Martin, J. H. Christenson, Winston Ko, D. R. Claes, M. R. Adams, Young-Sang Yu, C. Cretsinger, M. Strovink, E. James, Orin I. Dahl, F. Landry, John Rutherfoord, L. Magaña-Mendoza, J. Bantly, J. M. Hauptman, Cecilia Elena Gerber, Y. M. Park, S.A. Kahn, D. Edmunds, L. T. Goss, Philip Baringer, Hiroaki Aihara, K. M. Mauritz, J. Jaques, Andre Sznajder, M. L. Stevenson, T. Fahland, M. Tartaglia, P.F. Ermolov, V. S. Burtovoi, Andrew Brandt, R. Engelmann, Liu Chen, E. A. Kozlovsky, M. D. Peters, H.E. Miettinen, M. Bhattacharjee, Kaushik De, V. A. Bezzubov, M. Demarteau, J. P. Negret, R. P. Smith, J. Mc Kinley, J. Womersley, Z. Wu, Dhiman Chakraborty, Michael Shupe, L. Oesch, D. Karmanov, V. V. Babintsev, Jianming Qian, F. Borcherding, S. Banerjee, V. Balamurali, B. G. Pope, E. Flattum, Raymond Brock, Boaz Klima, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, Vladimir Gavrilov, E. G. Zverev, F. Stichelbaut, J. L. González-Solís, P. Gartung, A. Jonckheere, Peter Nemethy, Brajesh C Choudhary, M. Roco, Richard Breedon, A. P. Vorobiev, Stephan Linn, Elizaveta Shabalina, Gordon Watts, V. Oguri, E. Oltman, V. Sirotenko, D. Norman, E. Smith, O. V. Eroshin, P. I. Goncharov, Y. Fisyak, R. Mc Carthy, G. Eppley, N. Oshima, H. da Motta, S. Willis, Miguel Mostafa, M. M. Baarmand, B. Pawlik, Sarah Catherine Eno, J. T. White, Marvin Johnson, P. Hanlet, Heriberto Castilla-Valdez, D. Buchholz, Phillip Gutierrez, Daria Zieminska, J. G.R. Lima, B. Gibbard, B. S. Acharya, A. V. Kozelov, Wagner Carvalho, C. Klopfenstein, S. Youssef, Tong Hu, F. Nang, J. Sculli, Edilamar Menezes de Oliveira, D. Casey, P. Tamburello, A. S. Ito, J. Kotcher, S. Choi, Richard B. Lipton, Sharon Hagopian, D. Vititoe, J. Warchol, A. K.A. Maciel, G. Finocchiaro, R. J. Genik, C. Miao, C. S. Mishra, Heng Xu, A. Sanchez-Hernandez, Anna Goussiou, Nikos Varelas, A. V. Kotwal, Harrison Prosper, Robert Kehoe, K. Genser, K. S. Hahn, D. Cutts, Stephen Wimpenny, T. Mc Mahon, A. R. Clark, G. Guglielmo, Gregory R Snow, Greg Landsberg, P. Yamin, D. P. Stoker, Elizabeth Gallas, R. Piegaia, R. Hernández-Montoya, H. Jostlein, T. Marshall, N. Graf, K. Streets, Vipin Bhatnagar, Vasken Hagopian, H. Weerts, Darien Wood, T. L. Geld, N. Sotnikova, J. Krane, S. Mani, Rajendran Raja, Nicholas John Hadley, S. P. Denisov, Lev Dudko, S. Blessing, Scott Snyder, Eunil Won, M. Paterno, M. R. Krishnaswamy, R. Markeloff, F. Lobkowicz, S. C. Loken, R. Partridge, M. Abolins, F. Hsieh, R. Madden, N. Parua, V.V. Abramov, S. Reucroft, B. Baldin, Matthew Jones, A. Para, Sergey Chekulaev, Brad Abbott, Y. Ducros, C. Yoshikawa, J. B. Singh, Peter W. Draper, T. Rockwell, Iain Alexander Bertram, L. Babukhadia, Arnaud Lucotte, H. S. Mao, G. Wang, Alberto Santoro, Sergey Kuleshov, H. Haggerty, T. Mc Kibben, Victor Daniel Elvira, J. Mc Donald, T. Joffe-Minor, D. L. Adams, Randy Ruchti, Michael Rijssenbeek, H. E. Fisk, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, S. R. Dugad, P. Mooney, N. K. Mondal, H. T. Diehl, H. Singh, A. Boehnlein, M. Fortner, J. Perkins, R. D. Schamberger, S. Feher, Ting Hu, A. Zieminski, J. Ellison, S. Fuess, Y. Gershtein, A. V. Kostritskiy, M. Merkin, Sissel Hansen, A. L. Lyon, Shuichi Kunori, Z. Zhou, J. Solomon, K. A. Johns, L. Coney, V. Vaniev, D. A. Stoyanova, N. Amos, Gervasio Gomez, R. J. Madaras, E. W. Anderson, S. Y. Jun, T. L.T. Thomas, Allen Mincer, Sebastian Grinstein, P. Padley, Alexey Volkov, C. Shaffer, D. Cullen-Vidal, James H Cochran, N. N. Biswas, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, S. Chopra, B. Gómez, Z. H. Zhu, J. M. Guida, D. Hedin, Alexander Belyaev, Y. Pischalnikov, Ulrich Heintz, P. M. Tuts, R. W. Stephens, M. Diesburg, B. May, D. Owen, B. Gobbi, Anurag Gupta, J. Tarazi, T. Yasuda, T. Huehn, D. Fein, Don Lincoln, Erich Varnes, Daniel John Karmgard, Jing Li, N.V. Mokhov, Y. H. Zhou, G. E. Forden, A. P. Heinson, B. Zhang, R. E. Hall, Z. Casilum, S. Krzywdzinski, A. Zylberstejn, H. Greenlee, A. Bross, Serban Protopopescu, M. L. Kelly, Howard Gordon, K. C. Frame, and O. Ramirez

Subjects
Physics, Particle physics, Detector, Tevatron, Theoretical models, General Physics and Astronomy, law.invention, Nuclear physics, Cross section (physics), Transverse plane, law, Pseudorapidity, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Collider
Abstract

This paper presents the first measurement of the inclusive J/Psi production cross section in the forward pseudorapidity region 2.5

Published
1999

26. Search for Squarks and Gluinos in Single-Photon Events with Jets and Large Missing Transverse Energy inpp¯Collisions at√s=1.8TeV

Author

J. M. Hauptman, E. Flattum, Cecilia Elena Gerber, R. Snihur, L. Lueking, V. V. Babintsev, B. G. Pope, Jianming Qian, Y. Pischalnikov, Ulrich Heintz, K. Del Signore, E. Smith, S. M. Chang, R. Hernández-Montoya, N. Sotnikova, J. Krane, M. Diesburg, C. S. Mishra, Tong Hu, Elizaveta Shabalina, Hiroaki Aihara, G. Eppley, D. Owen, T. Mc Mahon, J. Tarazi, P. M. Tuts, R. W. Stephens, A. V. Kostritskiy, Alexander Belyaev, H. da Motta, D. A. Stoyanova, L. Magaña-Mendoza, Sissel Hansen, J. G.R. Lima, J. Jaques, J. T. White, Meenakshi Narain, Gervasio Gomez, C. Shaffer, D. Cullen-Vidal, N. N. Biswas, G. Wang, Alberto Santoro, L. Coney, S. A. Jerger, Andrew White, Robert Hirosky, A. Leflat, S. Chopra, H. D. Wahl, H. Haggerty, A. S. Ito, Winston Ko, K. S. Hahn, G. Guglielmo, D. Cutts, J. Mc Donald, W. G. Cobau, M. I. Martin, D. Green, B. Gibbard, W. Y. Chen, G. Gutierrez, Gilvan Alves, T. Joffe-Minor, A. Narayanan, George R. Kalbfleisch, H. E. Fisk, P. Yamin, Richard Breedon, V. S. Narasimham, Dhiman Chakraborty, H. L. Melanson, P. Z. Quintas, J. Mc Kinley, J. Sculli, Raymond Brock, C. Cretsinger, Philip Baringer, Z. Zhou, J. Solomon, Vasken Hagopian, M. Strovink, E. James, P. Padley, Alexey Volkov, N.V. Mokhov, C. Murphy, R. Astur, S. Banerjee, J. Womersley, Boaz Klima, John Hobbs, James H Cochran, V. Balamurali, Nikos Varelas, M. Sosebee, P. Gartung, Y. H. Zhou, S. K. Kim, A. A. Mayorov, Mitchell Wayne, H. Schellman, J. M. Kohli, Greg Landsberg, F. Stichelbaut, V. A. Bezzubov, T. Heuring, M. K. Fatyga, G. Steinbrück, R. K. Shivpuri, M. R. Adams, Young-Sang Yu, H. Weerts, J. H. Christenson, S. Mani, D. Norman, J. Bantly, J. Snow, D. R. Claes, Stefan Grünendahl, J. Thompson, B. S. Acharya, C. K. Jung, G. E. Forden, A. P. Heinson, M. H.G. Souza, J. P. Negret, R. P. Smith, B. Gómez, V. Oguri, T. L. Geld, T. G. Trippe, S. Willis, R. Madden, M. Bhattacharjee, M. Tartaglia, B. Zhang, D. Stewart, Z. H. Zhu, M. Paterno, Lev Dudko, S. N. Gurzhiev, R. Jesik, Sharon Hagopian, Kaushik De, P. Yepes, H. E. Montgomery, Michael Shupe, Peter W. Draper, Andrew Brandt, A. K.A. Maciel, Wagner Carvalho, R. Engelmann, K. Streets, A. N. Galyaev, Vipin Bhatnagar, E. Oltman, M. L. Stevenson, E. A. Kozlovsky, R. Partridge, H.E. Miettinen, K. Genser, Pushpalatha C Bhat, F. Borcherding, Peter Nemethy, M. Roco, K. Gounder, Rajendran Raja, B. Lauer, Y. Fisyak, R. Mc Carthy, Stephen Wimpenny, W. E. Cooper, L. P. Chen, N. Parua, V.V. Abramov, D. Karmanov, E. W. Anderson, Marvin Johnson, M. A.C. Cummings, T. Marshall, R. Piegaia, Viatcheslav Stolin, K. M. Mauritz, Brad Abbott, J. Warchol, Heriberto Castilla-Valdez, Matthew Jones, H. S. Mao, R. E. Hall, D. L. Adams, J. L. González Solís, B. May, A. V. Kozelov, Miguel Mostafa, M. M. Baarmand, P.F. Ermolov, Darien Wood, A. V. Kotwal, B. Hoeneisen, Lee Sawyer, Sarah Catherine Eno, Harrison Prosper, Allen Mincer, Nicholas John Hadley, Z. Casilum, V. S. Burtovoi, Arnaud Lucotte, Sebastian Grinstein, S. Feher, B. Gobbi, E. G. Zverev, S. Blessing, Ting Hu, F. Nang, Richard B. Lipton, A. Baden, Scott Snyder, Anurag Gupta, B. Pawlik, G. C. Blazey, Brajesh C Choudhary, D. P. Stoker, A. Zieminski, D. Vititoe, R. Yamada, R. Markeloff, R. J. Genik, Randy Ruchti, D. Casey, T. Yasuda, Y. M. Park, S. H. Ahn, T. Huehn, J. Kotcher, R. J. Madaras, S.A. Kahn, H. A. Neal, H. C. Shankar, D. Buchholz, Edilamar Menezes de Oliveira, O. I. Dahl, J. V.D. Wirjawan, S. Y. Jun, T. L.T. Thomas, Michael A. Strauss, D. Fein, M. Demarteau, K. Yip, N. Graf, P. Tamburello, Heng Xu, Z. Wu, Vladimir Gavrilov, Anna Goussiou, Gordon Watts, M. Zielinski, J. M. Guida, D. Hedin, Jinhong Yu, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, Elizabeth Gallas, Gregory R Snow, H. Jostlein, A.S. Dyshkant, Joan A. Guida, P. Hanlet, F. Lobkowicz, G. Di Loreto, T. Rockwell, Iain Alexander Bertram, D. Denisov, Michael Rijssenbeek, C. Boswell, A. Jonckheere, Don Lincoln, Srinivasan Rajagopalan, Erich Varnes, Thomas Ferbel, V. N. Evdokimov, A. P. Vorobiev, D.S. Koltick, J. T. Linnemann, Stephan Linn, L. Babukhadia, M. Chung, N. Oshima, Daria Zieminska, Daniel John Karmgard, Emanuela Barberis, G. Finocchiaro, Suman Bala Beri, L. T. Goss, Jing Li, S. Krzywdzinski, D. Edmunds, A. Zylberstejn, Andre Sznajder, Yuri Gershtein, P. Bloom, H. Greenlee, J. A. Wightman, M. D. Peters, A. Bross, L. Oesch, Serban Protopopescu, N. I. Bojko, S. Reucroft, M. Fortner, J. Perkins, M. Merkin, M. Abolins, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, C. Yoshikawa, H. Piekarz, R. D. Schamberger, P. Mooney, S. C. Loken, B. Baldin, Y. Ducros, J. B. Singh, N. K. Mondal, H. T. Diehl, H. Singh, Sergey Kuleshov, N. Amos, T. Mc Kibben, Victor Daniel Elvira, A. Boehnlein, S. Youssef, S. Choi, A. Sanchez-Hernandez, Robert Kehoe, J. Ellison, Eunil Won, S. Fuess, A. L. Lyon, A. L. Spadafora, Shuichi Kunori, P. I. Goncharov, K. A. Johns, V. Vaniev, C. Miao, S. R. Dugad, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, Sergey Chekulaev, I. Adam, P. Rubinov, K. W. Merritt, Q. Z. Li Demarteau, J. F. Bartlett, V. Manankov, F. Landry, John Rutherfoord, C. Klopfenstein, and T. Fahland

Subjects
Physics, Particle physics, Branching fraction, Physics beyond the Standard Model, High Energy Physics::Phenomenology, General Physics and Astronomy, Elementary particle, Supersymmetry, Standard Model, Nuclear physics, High Energy Physics::Experiment, Production (computer science), Energy (signal processing), Minimal Supersymmetric Standard Model
Abstract

We search for new physics using events with one high transverse energy photon, two or more jets, and an apparent imbalance in transverse energy, in p{ovr p} collisions at the Fermilab Tevatron at {radical} (s) =1.8 TeV . Such events are predicted for production of supersymmetric particles in some models. No excess is observed beyond expected background. For the parameter space of the minimal supersymmetric standard model with branching fraction B({tilde {chi}}{sup 0}{sub 2}{r_arrow}{gamma}thinsp{tilde {chi}}{sup 0}{sub 1})=1 and m{sub {tilde {chi}}{sup 0}{sub 2 }}{minus}m{sub {tilde {chi}}{sup 0}{sub 1}}{gt}20 GeV , we obtain a 95{percent} confidence level lower mass limit of 310thinspthinspGeV for equal mass squarks and gluinos. The results are also interpreted in models with low energy gauge mediated supersymmetry breaking. {copyright} {ital 1998} {ital The American Physical Society }

Published
1999

27. The role of double parton collisions in soft hadron interactions

Author

S. G. Matinyan, R. P. Scharenberg, S. H. Oh, N. N. Biswas, V. P. Kenney, C.H. Wang, B.C. Stringfellow, E. W. Anderson, W. D. Walker, A. Bujak, N. Morgan, Carlos Hojvat, D.D. Carmony, A.R. Erwin, John M. LoSecco, F. Turkot, N. T. Porile, C. S. Lindsey, M. A. Thompson, Andrew S. Hirsch, L. J. Gutay, and T. Alexopoulos

Subjects
Nuclear physics, Diffraction, Physics, Nuclear and High Energy Physics, Cross section (physics), Particle physics, Range (particle radiation), Hadron, Tevatron, High Energy Physics::Experiment, Parton, Center of mass, Nuclear Experiment
Abstract

We have examined charged multiplicities arising from p−p and p− p collisions over the range of center of mass energies, s , from 30 GeV to 1800 GeV. Results from Tevatron experiment E735 support the presence of double parton interactions. These processes can be seen to account for a large fraction of the increase in the non single diffraction inelastic cross section from energies of about 200 GeV to 1800 GeV.

Published
1998

28. Search forCharge−1/3Third-Generation Leptoquarks inpp¯Collisions ats=1.8TeV

Author

C. Klopfenstein, B. May, T. Huehn, A. Jonckheere, B. Gobbi, Y. Fisyak, D. Fein, H. E. Fisk, Robert Hirosky, Jasvinder A. Singh, D. Edmunds, M. Sosebee, S. C. Loken, Erich Varnes, T. Yasuda, M. Demarteau, R. Astur, T. Heuring, Marvin Johnson, Daniel John Karmgard, H. L. Melanson, R. Hernández-Montoya, A. V. Kozelov, B. Baldin, Bobby Samir Acharya, Andre Sznajder, H. A. Neal, K. S. Hahn, T. McMahon, H. C. Shankar, S. A. Jerger, D. Lincoln, R. Snihur, M. D. Peters, M. Abolins, T. McKibben, N. Sotnikova, J. Krane, J. T. Linnemann, Stephen Wimpenny, J. Bantly, A. Leflat, H. E. Montgomery, P. Mooney, Andrew White, L. Oesch, I. Adam, P. Rubinov, Greg Landsberg, M. Narain, W. G. Cobau, T. Marshall, W. Y. Chen, Gilvan Alves, L. Magaña-Mendoza, T. Joffe-Minor, Yu. Pischalnikov, George R. Kalbfleisch, M. Merkin, J. S. Kang, V. S. Narasimham, Jing Li, P. C. Bhat, S. M. Chang, R. Engelmann, N. K. Mondal, H. T. Diehl, H. Singh, P. Padley, Alexey Volkov, K. W. Merritt, James H Cochran, T. L. Geld, J. V.D. Wirjawan, D. R. Green, Darien Wood, C. Boswell, J. McDonald, E. A. Kozlovsky, Joan A. Guida, H.E. Miettinen, M. Paterno, J. Kourlas, A. Brandt, N. Amos, H. D. Wahl, Mitchell Wayne, R. J. Madras, H. Schellman, J. M. Kohli, V. Manankov, A. A. Mayorov, U. Heintz, A. Bross, Raymond Brock, Nicholas John Hadley, Boaz Klima, C. Yoshikawa, A. Baden, Z. Zhou, J. Solomon, J. Ellison, S. Youssef, S. Choi, G. Di Loreto, Suman Bala Beri, C. Cretsinger, H. Castilla-Valdez, Yanwen Liu, M. K. Fatyga, Emanuela Barberis, G. C. Blazey, J. Thompson, Vasken Hagopian, John Hobbs, J. Z.Y. Jiang, J. Snow, M. Chung, K. Gounder, N. Mokhov, S. Blessing, Scott Snyder, M. R. Adams, Elizabeth Gallas, L. T. Goss, A. Sanchez-Hernandez, R. Markeloff, M. Strovink, E. James, M. D. Jones, M. Strauss, D. Norman, B. Gómez, Z. H. Zhu, G. E. Forden, A. P. Heinson, S. Banerjee, H. Weerts, W. Smart, V. Balamurali, R. E. Hall, J. L. González Solís, Z. Casilum, Lev Dudko, Shashikant Dugad, Brad Abbott, Robert Kehoe, A. Gupta, Peter Nemethy, A. L. Spadafora, S. Proptopopescu, P. I. Goncharov, C. S. Mishra, S. Willis, A. Para, E. G. Zverev, A. N. Galyaev, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, Dhiman Chakraborty, M. Bhattacharjee, M. Tartaglia, H. Greenlee, A. S. Ito, S. Glenn, Srinivasan Rajagopalan, Thomas Ferbel, J. Yu, J. McKinley, R. Jesik, F. Landry, John Rutherfoord, K. A. Johns, Q. Z. Li-Demarteau, L. Babukhadia, D. Buchholz, D. Cutts, Edilamar Menezes de Oliveira, N. Parua, K. Del Signore, Wagner Carvalho, P. Z. Quintas, Alexander Vorobiev, Young-Sang Yu, Eunil Won, Haifeng Li, T. G. Trippe, C. T. Murphy, A. V. Kostritskiy, D. Stewart, S. N. Gurzhiev, S. Hansen, F. Stichelbaut, J. Jaques, Ting Hu, Hiroaki Aihara, S. Lökös, V. Oguri, A. Zylberstejn, G. Eppley, Ron Lipton, B. Gibbard, Sharon Hagopian, J. Sculli, A. K.A. Maciel, L. P. Chen, Daniel R Claes, P. Tamburello, L. Coney, D. Vititoe, M. L. Stevenson, A. Zieminski, Y. Ducros, P. M. Tuts, R. J. Genik, C. K. Jung, H. da Motta, J. G.R. Lima, R. W. Stephens, S. Feher, S. Fuess, M. L. Kelly, J. Yang, W. E. Cooper, E. Oltman, E. Flattum, S. Krzywdzinski, J. Womersley, J. Warchol, A. Narayanan, Howard Gordon, P. Hanlet, Y. M. Park, K. C. Frame, F. Borcherding, D. Denisov, J. M. Hauptman, Cecilia Elena Gerber, J. F. Bartlett, Heng Xu, Anna Goussiou, O. Ramirez, P. Gartung, Viatcheslav Stolin, Nikos Varelas, R. K. Shivpuri, J. Balderston, S.A. Kahn, G. Finocchiaro, S. Y. Jun, B. G. Pope, Alexander Belyaev, Y. Gershtein, T. L.T. Thomas, G. Guglielmo, Sergey Kuleshov, R. Piegaia, J. H. Christenson, M. Fortner, A. Boehnlein, J. Perkins, S. P. Denisov, P. Grudberg, Randy Ruchti, D. Karmanov, E. W. Anderson, L. Lueking, Victor Daniel Elvira, M. M. Baarmand, Sarah Catherine Eno, M. R. Krishnaswamy, Kaushik De, Jianming Qian, F. Hsieh, P. Bloom, J. A. Wightman, R. McCarthy, F. Nang, N. I. Bojko, A. R. Clark, C. L. Kim, D. P. Stoker, Elizaveta Shabalina, Brajesh C Choudhary, Gregory R Snow, Allen Mincer, Sebastian Grinstein, Sergey Chekulaev, H. Haggerty, Vladimir Gavrilov, S. Reucroft, Gordon Watts, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, Tong Hu, H. Piekarz, S.H. Ahn, G. Gutierrez, M. Diesburg, V. Sirotenko, S. Grünendahl, K. Genser, O. V. Eroshin, H. S. Mao, Phillip Gutierrez, G. Wang, Alberto Santoro, Seong Keun Kim, M. H.G. Souza, P. Yepes, A. L. Lyon, Shuichi Kunori, D. Owen, K. M. Mauritz, P.F. Ermolov, V. S. Burtovoi, J. T. White, J. Tarazi, D. A. Stoyanova, Gervasio Gomez, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, N. N. Biswas, R. Raja, Stephan Linn, S. Chopra, N. Oshima, Daria Zieminska, R. D. Schamberger, J. M. Guida, D. Hedin, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, V. N. Evdokimov, D.S. Koltick, V. A. Bezzubov, J. P. Negret, H. Jöstlein, R. P. Smith, Michael Shupe, P. Yamin, K. Streets, Vipin Bhatnagar, R. Partridge, A. V. Kotwal, Harrison Prosper, D. L. Adams, S. Mani, R. Madden, L. Rasmussen, B. Pawlik, Peter W. Draper, Georg Steinbrück, T. Fahland, D. Casey, R. Yamada, J. Kotcher, E. Smith, M. Roco, O. I. Dahl, N. Graf, and M. I. Martin

Subjects
Physics, Particle physics, Pair production, Branching fraction, Tau neutrino, High Energy Physics::Phenomenology, General Physics and Astronomy, High Energy Physics::Experiment, Leptoquark, Charge (physics), Elementary particle, Coupling (probability), Lepton
Abstract

We report on a search for $\mathrm{charge}\ensuremath{-}1/3$ third-generation leptoquarks (LQ) produced in $p\overline{p}$ collisions at $\ensuremath{\surd}s\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\mathrm{TeV}$ using the $\mathrm{D}0$ detector at Fermilab. Third-generation leptoquarks are assumed to be produced in pairs and to decay to a tau neutrino and a $b$ quark with branching fraction $B$. We place upper limits on $\ensuremath{\sigma}(p\overline{p}\ensuremath{\rightarrow}\mathrm{LQ}\overline{\mathrm{LQ}}){B}^{2}$ as a function of the leptoquark mass ${M}_{\mathrm{LQ}}$. Assuming $B\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1$, we exclude at the 95% confidence level third-generation scalar leptoquarks with ${M}_{\mathrm{LQ}}l94\mathrm{GeV}{/c}^{2}$, and third-generation vector leptoquarks with ${M}_{\mathrm{LQ}}l216\mathrm{GeV}{/c}^{2}({M}_{\mathrm{LQ}}l148\mathrm{GeV}{/c}^{2}$) assuming Yang-Mills (anomalous) coupling.

Published
1998

29. Measurement of the Shape of the Transverse Momentum Distribution ofWBosons Produced inpp¯Collisions at√s=1.8TeV

Author

A. Brandt, T. Joffe-Minor, M. I. Martin, S. A. Jerger, Z. Zhou, J. Solomon, Joan A. Guida, G. E. Forden, A. P. Heinson, A. Leflat, H. E. Montgomery, G. Di Loreto, E. Flattum, S. Krzywdzinski, W. G. Cobau, M. D. Jones, J. Snow, R. E. Hall, J. L. González Solís, J. M. Hauptman, Cecilia Elena Gerber, Z. Casilum, Jianming Qian, Srinivasan Rajagopalan, Thomas Ferbel, Heriberto Castilla-Valdez, L. T. Goss, G. Wang, Alberto Santoro, J. G.R. Lima, G. Kalbfleisch, Seong Keun Kim, Tong Hu, B. Baldin, J. McDonald, E. G. Zverev, H. D. Wahl, B. May, M. Chung, B. Hoeneisen, J. Yang, R. Snihur, D. Owen, K. Streets, V. A. Bezzubov, J. P. Negret, H. Jöstlein, R. P. Smith, Robert Hirosky, M. Tartaglia, Vipin Bhatnagar, M. Diesburg, Haifeng Li, S. M. Chang, B. Gobbi, R. Partridge, Anurag Gupta, S. Banerjee, J. Tarazi, A. Zylberstejn, M. Fortner, J. Perkins, Andrew White, A. N. Galyaev, K. S. Hahn, D. Cutts, Greg Landsberg, Michael Shupe, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, P. Mooney, H. Schellman, J. M. Kohli, E. Smith, Elizabeth Gallas, C. Yoshikawa, A. Para, L. Sawyer, K. Genser, S. Grünendahl, W. Y. Chen, J. Kourlas, V. Balamurali, Gilvan Alves, Y. Ducros, D. Norman, J. Jaques, C. L. Kim, J. Thompson, Jasvinder A. Singh, D. Koltick, H. S. Mao, D. L. Adams, M. L. Kelly, D. Stewart, S. N. Gurzhiev, P. Yamin, John Hobbs, T. L. Geld, B. G. Pope, T. Yasuda, S. C. Loken, Z. H. Zhu, Ron Lipton, Vasken Hagopian, A. V. Kotwal, Howard Gordon, V. S. Narasimham, K. C. Frame, Young-Sang Yu, Harrison Prosper, M. Paterno, Serban Protopopescu, H. Weerts, S. Mani, A. Narayanan, O. Ramirez, J. Womersley, Shashikant Dugad, W. Smart, B. Gibbard, A. L. Lyon, Shuichi Kunori, Lev Dudko, C. Klopfenstein, R. Madden, D. Karmanov, M. Demarteau, L. P. Chen, Daniel R Claes, Ting Hu, L. Rasmussen, Elizaveta Shabalina, T. Fahland, T. Huehn, C. Murphy, M. Sosebee, Peter W. Draper, R. Astur, Alexander Belyaev, A. Zieminski, A. A. Mayorov, U. Heintz, T. Heuring, D. Fein, Dhiman Chakraborty, H. E. Fisk, A. S. Ito, Brajesh C Choudhary, D. Lincoln, A. V. Kostritskiy, J. Sculli, I. Adam, P. Rubinov, N. Amos, R. Yamada, G. Gutierrez, M. K. Fatyga, A. Boehnlein, R. Raja, Stephan Linn, J. Bantly, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, D. Casey, K. W. Merritt, Victor Daniel Elvira, L. Coney, T. McKibben, J. Yu, N. Oshima, Erich Varnes, P. Hanlet, M. Bhattacharjee, J. Kotcher, R. Hernández-Montoya, R. D. Schamberger, D. A. Stoyanova, V. Manankov, F. Borcherding, Yanwen Liu, J. F. Bartlett, V. Gavrilov, S. Kuleshov, M. M. Baarmand, D. Denisov, Daniel John Karmgard, S. Grinstein, J. M. Guida, D. Hedin, Sarah Catherine Eno, P. Bloom, J. A. Wightman, T. G. Trippe, G. Finocchiaro, L. Magaña-Mendoza, Nikos Varelas, S. Y. Jun, T. L.T. Thomas, G. Steinbrück, P. Z. Quintas, Alexander Vorobiev, R. K. Shivpuri, K. Gounder, C. S. Mishra, K. M. Mauritz, Emanuela Barberis, J. Z.Y. Jiang, N. Sotnikova, Gordon Watts, J. Krane, B. Lauer, M. A.C. Cummings, N. Mokhov, M. Merkin, M. Roco, N. I. Bojko, R. Engelmann, P.F. Ermolov, O. I. Dahl, V. Sirotenko, Gervasio Gomez, O. V. Eroshin, J. Balderston, F. Lobkowicz, F. Nang, Sharon Hagopian, A. K.A. Maciel, E. W. Anderson, E. A. Kozlovsky, A. Baden, H.E. Miettinen, H. L. Melanson, Phillip Gutierrez, S.A. Kahn, N. Graf, S. P. Denisov, P. Grudberg, P. Gartung, G. C. Blazey, W. E. Cooper, E. Oltman, S. Reucroft, Jing Li, P. C. Bhat, R. Jesik, A. Bross, Raymond Brock, Boaz Klima, C. Shaffer, D. Cullen-Vidal, T. Rockwell, Iain Alexander Bertram, A. Goldschmidt, M. R. Krishnaswamy, K. Del Signore, Brad Abbott, V. S. Burtovoi, J. T. White, N. N. Biswas, F. Hsieh, A. R. Clark, R. Piegaia, J. H. Christenson, D. Pušeljić, S. Chopra, Jian Kang, Allen Mincer, Michael Rijssenbeek, Sergey Chekulaev, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, F. Landry, John Rutherfoord, Hiroaki Aihara, N. Parua, H. Piekarz, S.H. Ahn, S. Lökös, S. Willis, Kaushik De, K. A. Johns, T. McMahon, Mary Beth Adams, L. Babukhadia, P. M. Tuts, H. Haggerty, S. Youssef, S. Choi, V. N. Evdokimov, R. W. Stephens, S. Feher, J. V. D. Wirjawan, G. Guglielmo, A. Sanchez-Hernandez, Robert Kehoe, V. Oguri, Stephen Wimpenny, Q. Z. Li-Demarteau, Eunil Won, B. Pawlik, D. R. Green, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, S. Hansen, F. Stichelbaut, R. J. Madaras, D. Buchholz, M. L. Stevenson, Edilamar Menezes de Oliveira, Randy Ruchti, Y. Pischalnikov, J. Warchol, P. Tamburello, Heng Xu, Anna Goussiou, M. Narain, Gregory R Snow, M. H.G. Souza, P. Yepes, A. L. Spadafora, P. I. Goncharov, C. K. Jung, V. Stolin, L. Lueking, M. Abolins, N. K. Mondal, H. T. Diehl, H. Singh, J. Ellison, G. Eppley, H. da Motta, D. Zieminska, S. Fuess, Y. Fisyak, H. Greenlee, B. Gómez, S. Glenn, J. McKinley, Y. M. Park, Wagner Carvalho, R. L. McCarthy, Marvin Johnson, T. Marshall, D. Vititoe, R. J. Genik, A. V. Kozelov, Peter Nemethy, A. Jonckheere, D. Edmunds, Andre Sznajder, Yuri Gershtein, M. D. Peters, L. Oesch, D. P. Stoker, Michael A. Strauss, C. Boswell, Suman Bala Beri, C. Cretsinger, M. Strovink, and E. James

Subjects
Quantum chromodynamics, Physics, Particle physics, High Energy Physics::Phenomenology, General Physics and Astronomy, Elementary particle, Particle detector, Nuclear physics, High Energy Physics::Experiment, Fermilab, Perturbation theory (quantum mechanics), Resummation, Quantum field theory, Nuclear Experiment, Boson
Abstract

The shape of the transverse momentum distribution of W bosons (p_T(W)) produced in pbarp collisions at sqrt(s)= 1.8 TeV is measured with the DO detector at Fermilab. The result is compared to QCD perturbative and resummation calculations over the p_T(W) range from 0-200 GeV/c. The shape of the distribution is consistent with the theoretical prediction.

Published
1998

30. A Measurement of theWBoson Mass at the Fermilabpp¯Collider

Author

D. Cutts, G. Eppley, P. Padley, Alexey Volkov, Greg Landsberg, James H Cochran, J. G.R. Lima, N. Parua, Matthew Jones, Mitchell Wayne, A. S. Ito, H. Schellman, J. M. Kohli, Pm Tuts, C. Cretsinger, T. L. Geld, Natalie A. Roe, M. Strovink, D. Stewart, D. Buchholz, Edilamar Menezes de Oliveira, Stefan Grünendahl, E. James, R. L. McCarthy, R. K. Shivpuri, M. Tartaglia, Q. Z. Li-Demarteau, Peter Nemethy, M. Roco, J. Thompson, S. A. Jerger, T. Joffe-Minor, A. Leflat, Robert Hirosky, B. Gómez, Z. H. Zhu, M. Paterno, S. N. Gurzhiev, P. Tamburello, Heng Xu, Anna Goussiou, Kaushik De, Shashikant Dugad, Randy Ruchti, W. Y. Chen, W. G. Cobau, M. I. Martin, J. S. Kang, Gilvan Alves, J. McDonald, George R. Kalbfleisch, H. E. Fisk, A. Baden, G. C. Blazey, C. S. Mishra, V. S. Narasimham, G. Guglielmo, J. M. Guida, D. Hedin, A. A. Mayorov, J. Jaques, S. Glenn, J. McKinley, M. K. Fatyga, G. Steinbrück, Gregory R Snow, Vasken Hagopian, H. Weerts, Lev Dudko, D. A. Stoianova, Wagner Carvalho, S. Banerjee, J. Snow, S. H. Ahn, K. M. Mauritz, V. A. Bezzubov, E. W. Anderson, J. P. Negret, J. Solomon, P. Yamin, R. P. Smith, K. Streets, Vipin Bhatnagar, S. Fuess, F. Landry, John Rutherfoord, A. N. Galyaev, V. Balamurali, D. P. Stoker, T. McKibben, H. Aihara, S. Lami, P.F. Ermolov, B. Gibbard, E. G. Zverev, Michael Shupe, R. Partridge, Ron Lipton, Andrew White, T. McMahon, Y. E. Gutnikov, S. Mani, Mary Beth Adams, D. Vititoe, J. Womersley, Alexander Vorobiev, R. Jesik, R. J. Genik, J. Sculli, Allen Mincer, Michael A. Strauss, A. L. Spadafora, V. S. Burtovoi, Haifeng Li, R. Madden, C. Murphy, P. I. Goncharov, J. Kourlas, Sebastian Grinstein, John Hobbs, A. V. Kotwal, Harrison Prosper, Gordon Watts, C. L. Kim, V. Sirotenko, L. Rasmussen, R. Astur, Nikos Varelas, F. Borcherding, O. V. Eroshin, M. Bhattacharjee, C. Boswell, Peter W. Draper, Meenakshi Narain, A. V. Kostritskiy, Pushpalatha C Bhat, Joan A. Guida, W. E. Cooper, L. P. Chen, Daniel R Claes, I. Adam, P. Rubinov, Young-Sang Yu, Stephen Wimpenny, Phillip Gutierrez, Nikolai Mokhov, T. Heuring, R. J. Madaras, K. Gounder, J. M. Hauptman, Cecilia Elena Gerber, H. Da-Motta, T. G. Trippe, Sissel Hansen, L. Coney, Suman Bala Beri, T. Fahland, T. Marshall, B. Lauer, M. A.C. Cummings, G. P. Grim, R. W. Stephens, A. Narayanan, B. G. Pope, Darien Wood, D. Karmanov, K. W. Merritt, J. F. Bartlett, E. Flattum, Nicholas John Hadley, Marvin Johnson, M. M. Baarmand, Sarah Catherine Eno, S. Blessing, B. Hoeneisen, Lee Sawyer, Scott Snyder, H. S. Mao, D. Denisov, Jianming Qian, E. Smith, A. V. Kozelov, Sharon Hagopian, D. Edmunds, R. Markeloff, A. K.A. Maciel, V. Manankov, Elizaveta Shabalina, L. Magaña-Mendoza, M. Sosebee, Heriberto Castilla-Valdez, F. Lobkowicz, Srinivasan Rajagopalan, M. Merkin, J. T. White, Andre Sznajder, Dan Green, T. Rockwell, Iain Alexander Bertram, D. L. Adams, C. K. Jung, M. D. Peters, Yanwen Liu, E. Oltman, J. Bantly, L. Lueking, Brajesh C Choudhary, Vyacheslav Klyukhin, Michael Rijssenbeek, F. Nang, Raymond Brock, Boaz Klima, L. Oesch, B. May, Tong Hu, R. Piegaia, K. Bazizi, D. Norman, R. Snihur, Y. M. Park, M. Chung, S.A. Kahn, S. Willis, V. N. Evdokimov, Andrew Brandt, R. Engelmann, S. M. Chang, H.E. Miettinen, B. Gobbi, B. Pawlik, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, D.S. Koltick, Anurag Gupta, Jinhong Yu, A. Klatchko, K. Del-Signore, T. Yasuda, J. Linnenmann, M. Demarteau, Dhiman Chakraborty, J. Kotcher, M. Abolins, O. I. Dahl, N. Graf, N. K. Mondal, H. T. Diehl, H. Singh, G. Wang, Alberto Santoro, Seong Keun Kim, A. Boehnlein, P. M. Sood, H. L. Melanson, P. Z. Quintas, A. Jonckheere, Stephan Linn, J. Ellison, Y. Fisyak, J. H. Christenson, N. Oshima, Daria Zieminska, R. D. Schamberger, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, G. Diloreto, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, Sergey Chekulaev, T. Huehn, D. Fein, Erich Varnes, Daniel John Karmgard, N. Grossman, Y. Pischalnikov, Ulrich Heintz, F. Stichelbaut, H. Jöstlein, M. Diesburg, D. Owen, V. Oguri, Jing Li, J. Tarazi, S. Krzywdzinski, A. L. Lyon, Shuichi Kunori, V. I. Kochetkov, Alexander Belyaev, M. L. Stevenson, S. Feher, Ting Hu, P. Hanlet, A. Zylberstejn, Gervasio Gomez, J. Warchol, A. Zieminski, G. Finocchiaro, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, H. Greenlee, H. D. Wahl, N. N. Biswas, R. Yamanda, P. Mooney, S. Chopra, S. Reucroft, T. Ferbel, C. Yoshikawa, A. Bross, M. H.G. Souza, Serban Protopopescu, P. Yepes, H. E. Montgomery, S. Y. Jun, J. V.D. Wirjawan, T. L.T. Thomas, P. Gartung, Emanuela Barberis, D. Casey, G. E. Forden, A. P. Heinson, J. Z.Y. Jiang, Elizabeth Gallas, L. T. Goss, R. E. Hall, J. L. González Solís, C. Klopfenstein, Z. Casilum, W. Smart, K. A. Johns, R. Hernández-Montoya, N. Sotnikova, E. A. Kozlovski, J. Krane, Rajendran Raja, H. Haggerty, S. Lökös, Brad Abbott, J. Yang, V. M. Podstavkov, P. Bloom, J. A. Wightman, M. Fortner, N. I. Bojko, J. Perkins, S. C. Loken, N. Amos, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, B. Baldin, Y. Ducros, J. B. Singh, Victor Daniel Elvira, S. Youssef, S. Choi, A. Sanchez-Hernandez, Robert Kehoe, J. Balderston, R. L. Lander, D. Lincoln, Eunil Won, and K. S. Hahn

Subjects
Physics, Particle physics, Luminosity (scattering theory), High Energy Physics::Phenomenology, Detector, Tevatron, General Physics and Astronomy, law.invention, Nuclear physics, law, Transverse mass, High Energy Physics::Experiment, Fermilab, Nuclear Experiment, Collider, Boson
Abstract

We report a measurement of the W boson mass based on an integrated luminosity of 82 pb −1 from pp collisions at √s = 1.8 TeV recorded in 1994-1995 by the D0 detector at the Fermilab Tevatron. We identify W bosons by their decays to e∨ V and extract the mass by fitting the transverse mass spectrum from 28 323 W boson candidates. A sample of 3563 dielectron events, mostly due to Z→ee decays, constrains models of W boson production and the detector. We measure M W = 80.44±0.10(stat)±0.07(syst) GeV. By combining this measurement with our result form the 1992-1993 data set, we obtain M W = 80.43±0.11 GeV.

Published
1998

31. Zγproduction inpp¯collisions ats=1.8TeVand limits on anomalousZZγandZγγcouplings

Author

G. Eppley, A. Jonckheere, P. Padley, Alexey Volkov, A. P. Vorobiev, Stephan Linn, S. P. Denisov, Ulrich Heintz, J. Jaques, H. da Motta, J. G.R. Lima, Y. Fisyak, S. Krzywdzinski, R. Lander, R. D. Schamberger, S. C. Loken, M. R. Krishnaswamy, Mitchell Wayne, H. Schellman, J. M. Kohli, N. Oshima, V. I. Kochetkov, A. S. Ito, M. Diesburg, F. Hsieh, A. R. Clark, Daria Zieminska, Marvin Johnson, L. Magaña-Mendoza, D. Owen, A. Para, Stefan Grünendahl, Sergey Chekulaev, A. L. Lyon, J. Thompson, A. Zylberstejn, Jan M. Guida, A. V. Kozelov, J. Womersley, J. Tarazi, P. Bloom, I. Adam, K. W. Merritt, B. Gómez, Z. H. Zhu, Gordon Watts, V. Sirotenko, H. Greenlee, T. Heuring, J. F. Bartlett, S. Glenn, J. McKinley, N. I. Bojko, Robert Kehoe, Yanwen Liu, Robert Snihur, S. R. Dugad, D. A. Stoianova, O. V. Eroshin, R. Markeloff, Elizabeth Gallas, H. Jostlein, M. L. Kelly, Howard Gordon, K. C. Frame, Joan A. Guida, O. Ramirez, Phillip Gutierrez, Wagner Carvalho, Raymond Brock, Boaz Klima, Gervasio Gomez, J. Cochran, E. G. Zverev, S. M. Chang, K. Gounder, N. Sotnikova, T. Huehn, S. Feher, Ting Hu, D. Fein, Andrew White, Cecilia Elena Gerber, D. Chakraborty, D. Norman, D. Vititoe, Sándor Lökös, J. Yang, G. Di Loreto, R. J. Genik, S. Willis, M. A. Shupe, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, C. Shaffer, D. Cullen-Vidal, C. S. Mishra, Yu. Pischalnikov, A. Goldschmidt, M. H.G. Souza, Don Lincoln, Erich Varnes, H. E. Montgomery, A. Klatchko, A. Zieminski, M. Pang, C. Cretsinger, Daniel John Karmgard, Jianming Qian, N. N. Biswas, D. Denisov, V. M. Podstavkov, C. Boswell, L. Lueking, Srinivasan Rajagopalan, A. V. Kostritskiy, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, Sissel Hansen, S. Chopra, M. Chung, H. Piekarz, Vasken Hagopian, M. Strovink, E. James, Thomas Ferbel, H. Weerts, M. Fortner, P. Grudberg, Y. E. Gutnikov, J. Kourlas, Y. M. Park, Tong Hu, R. Jesik, J. Perkins, Suman Bala Beri, C. Klopfenstein, B. G. Pope, R. Hernández-Montoya, H. L. Melanson, P. Z. Quintas, M. Strauss, Peter Nemethy, K. Del Signore, Lev Dudko, H. Lan, John Hobbs, Stephen Wimpenny, C. T. Murphy, A. N. Galyaev, N. Grossman, D. Stewart, K. Bazizi, K. M. Mauritz, P.F. Ermolov, Sebastien Jonathan Kahn, S. N. Gurzhiev, J. M. Hauptman, S. Y. Jun, S. K. Kim, N.V. Mokhov, T. L.T. Thomas, J. H. Christenson, Hiroaki Aihara, M. Bhattacharjee, M. R. Adams, B. May, Young-Sang Yu, M. Abolins, N. A. Roe, Emanuela Barberis, J. Z.Y. Jiang, D. Edmunds, W. E. Cooper, M. Demarteau, Alexander Belyaev, B. Baldin, A. P. Heinson, Y. Ducros, J. B. Singh, P. Gartung, Andre Sznajder, P. M. Tuts, G. P. Grim, M.K. Fatyga, E. Amidi, G. Guglielmo, P. Hanlet, V. S. Burtovoi, T. Marshall, J. V.D. Wirjawan, Matthew Jones, David H. Adams, P. Yamin, R. E. Hall, S. A. Jerger, L. T. Goss, Robert Hirosky, G. Wang, Alberto Santoro, K. S. Hahn, B. S. Acharya, M. D. Peters, T. Fahland, W. M. Smart, J. L. González Solís, Z. Casilum, C. L. Kim, L. Oesch, T. G. Trippe, H. Haggerty, E. W. Anderson, P. Mooney, B. Gobbi, S. Mani, Elizaveta Shabalina, H. A. Neal, H. C. Shankar, M. Goforth, E. A. Kozlovski, W. Y. Chen, Darien Wood, Gilvan Alves, P. Rubinov, T. Joffe-Minor, G. Finocchiaro, Jong-Sung Yu, Victor Daniel Elvira, Marc M Baarmand, Sharon Hagopian, H. E. Fisk, H. D. Wahl, R. Astur, Nicholas John Hadley, Heriberto Castilla-Valdez, Allen Mincer, R. J. Madaras, A. Gupta, D. Cutts, R. Madden, George R. Kalbfleisch, V. S. Narasimham, Q. Z. Li-Demarteau, S. Blessing, G.E. Forden, R. W. Stephens, E. Flattum, J. Solomon, L. Rasmussen, A. K.A. Maciel, Peter W. Draper, S. Youssef, S. Choi, B. C. Choudhary, N. K. Mondal, V. Oguri, Sebastian Grinstein, Scott Snyder, Jing Li, H. T. Diehl, A. A. Mayorov, N. Parua, Randy Ruchti, D. Buchholz, A. D. Bross, S. Reucroft, M. K. Fatyga, T.R. McMahon, M. Paterno, M. L. Stevenson, Robert J. McCarthy, A. Sanchez-Hernandez, J. Snow, S. Protopopescu, D. P. Stoker, T. Yasuda, B. Pawlik, J. Warchol, P. Yepes, R. Piegaia, P. Tamburello, N. Amos, K. Genser, C. Yoshikawa, Heng Xu, Anna Goussiou, A. V. Kotwal, H. Singh, D.R. Green, J. Balderston, J. Krane, A. Boehnlein, Greg Landsberg, B. Gibbard, Rajendran Raja, D. Casey, Meenakshi Narain, J. A. Wightman, J. Kotcher, C. K. Jung, T. McKibben, Gregory R Snow, J. Sculli, Eunil Won, Brad Abbott, S. Lami, N. Graf, Nikos Varelas, R. K. Shivpuri, K. Streets, Vipin Bhatnagar, T. L. Geld, P. M. Sood, Shuichi Kunori, D. R. Claes, K. A. Johns, M. Tartaglia, Kaushik De, J. Ellison, S. Fuess, H. S. Mao, A. Narayanan, A. Baden, G. C. Blazey, W. G. Cobau, M. Sosebee, R. Yamada, S. H. Ahn, Hui Li, Orin I. Dahl, F. Landry, John Rutherfoord, J. Bantly, R. Partridge, James C. Green, F. Borcherding, E. Oltman, Sarah Catherine Eno, Andrew Brandt, R. Engelmann, Liu Chen, Vyacheslav Klyukhin, H.E. Miettinen, F. Nang, Richard B. Lipton, A. L. Spadafora, P. I. Goncharov, A. Leflat, M. I. Martin, F. Stichelbaut, J. S. Kang, J. McDonald, S. Banerjee, V. Balamurali, M. Merkin, D. Hedin, P. C. Bhat, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, V. A. Bezzubov, J. P. Negret, R. P. Smith, Harrison Prosper, and J. T. White

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics
Published
1998

32. Search for First Generation Scalar Leptoquark Pairs inpp¯Collisions ats=1.8TeV

Author

W. Y. Chen, Gilvan Alves, J. T. White, George R. Kalbfleisch, V. S. Narasimham, A. A. Mayorov, W. G. Cobau, C. T. Murphy, W. M. Smart, J. Snow, P. Hanlet, M. Sosebee, B. Gibbard, Hui Li, T. G. Trippe, A. Klatchko, P. Bloom, J. Bantly, D. Hedin, M. Chung, K. Streets, Vipin Bhatnagar, J. Sculli, H. S. Mao, B. May, Sharon Hagopian, A. K.A. Maciel, J. V.D. Wirjawan, N. I. Bojko, L. Lueking, Nikos Varelas, S. Reucroft, C. Yoshikawa, G. Eppley, Ulrich Heintz, Andrew Brandt, S. P. Denisov, R. Engelmann, P. C. Bhat, Liu Chen, F. Lobkowicz, K. Del Signore, M. A. Shupe, R. K. Shivpuri, G. Guglielmo, G. Finocchiaro, B. Gobbi, R. Piegaia, M. Diesburg, L. Magaña-Mendoza, H. da Motta, J. G.R. Lima, M. R. Krishnaswamy, T. Rockwell, Iain Alexander Bertram, M. Abolins, Marc M Baarmand, Michael Rijssenbeek, D. R. Claes, Hiroaki Aihara, H.E. Miettinen, D. Owen, H. D. Wahl, Georg Steinbrueck, P. Yepes, N. Amos, K. Genser, P. M. Tuts, G. P. Grim, F. Hsieh, J. S. Hoftun, K. Davis, J. N. Butler, M. Tartaglia, P. Mooney, J. Tarazi, D. Stewart, V. Oguri, P. D. Grannis, H. Piekarz, A. R. Clark, Sebastien Jonathan Kahn, A. S. Ito, G.E. Forden, A. Para, V. N. Evdokimov, S. N. Gurzhiev, E. W. Anderson, Rajendran Raja, Kaushik De, D.S. Koltick, T. Huehn, J. T. Linnemann, D. Fein, D. Chakraborty, N. K. Mondal, H. T. Diehl, J. M. Hauptman, Sergey Chekulaev, H. A. Neal, H. C. Shankar, Gervasio Gomez, M. Goforth, H. Singh, T.R. McMahon, M. Paterno, M. L. Stevenson, S. M. Chang, Raymond Brock, Boaz Klima, V. A. Bezzubov, J. P. Negret, J. Krane, J. Warchol, S. Youssef, S. Choi, R. P. Smith, Brad Abbott, T. Yasuda, Shuichi Kunori, K. A. Johns, A. Boehnlein, A. D. Bross, Robert J. McCarthy, C. S. Mishra, P. M. Sood, I. Adam, D. Norman, A. Sanchez-Hernandez, J. Ellison, Don Lincoln, Erich Varnes, Daniel John Karmgard, Elizabeth Gallas, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, H. Jostlein, S. Fuess, S. Feher, D.R. Green, J. Balderston, Allen Mincer, N. N. Biswas, J. Jaques, Sebastian Grinstein, S. Willis, R. Partridge, R. W. Stephens, Stephen Wimpenny, C. Klopfenstein, K. W. Merritt, J. F. Bartlett, V. Manankov, Robert Kehoe, Harrison Prosper, Ting Hu, S. Chopra, Meenakshi Narain, D. P. Stoker, A. N. Galyaev, Heriberto Castilla-Valdez, B. Knuteson, J. Womersley, T. Marshall, A. V. Kostritskiy, Yanwen Liu, Darien Wood, Eunil Won, R. Hernández-Montoya, A. Zieminski, Sissel Hansen, R. Jesik, D. Karmanov, Nicholas John Hadley, E. G. Zverev, Brajesh C Choudhary, S. Blessing, Joan A. Guida, Robert Snihur, Yu. Pischalnikov, W. E. Cooper, A. Narayanan, Scott Snyder, B. Baldin, N. Sotnikova, L. Coney, Y. Ducros, J. B. Singh, Vasken Hagopian, H. Weerts, M. Demarteau, Jing Li, R. Markeloff, Alexander Belyaev, M. L. Kelly, G. Di Loreto, P. Gartung, M. Merkin, D. Denisov, M.K. Fatyga, K. Bazizi, S. Y. Jun, T. L.T. Thomas, T. Fahland, Jong-Sung Yu, Srinivasan Rajagopalan, B. S. Acharya, Lev Dudko, Thomas Ferbel, M. Strauss, N.V. Mokhov, Victor Daniel Elvira, C. L. Kim, S. A. Jerger, A. L. Spadafora, P. Padley, Alexey Volkov, Y. Fisyak, P. I. Goncharov, James H Cochran, R. Lander, Peter Nemethy, Mitchell Wayne, H. Schellman, J. M. Kohli, Marvin Johnson, A. P. Heinson, A. L. Lyon, S. R. Dugad, Stefan Grünendahl, A. V. Kozelov, J. Thompson, B. Gómez, Z. H. Zhu, R. E. Hall, J. L. González Solís, Howard Gordon, K. C. Frame, O. Ramirez, C. Cretsinger, M. Strovink, E. James, Z. Casilum, S. Krzywdzinski, M. Bhattacharjee, V. I. Kochetkov, Gordon Watts, A. Zylberstejn, Jan M. Guida, H. Greenlee, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, D. Buchholz, Matthew Jones, A. Gupta, Q. Z. Li-Demarteau, P. Tamburello, N. Parua, Randy Ruchti, Heng Xu, T. Heuring, Anna Goussiou, A. V. Kotwal, Andrew White, J. A. Wightman, P. Grudberg, Gregory R Snow, Y. E. Gutnikov, J. Kourlas, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, John Hobbs, M. R. Adams, Young-Sang Yu, N. A. Roe, M. H.G. Souza, E. Flattum, H. E. Montgomery, D. Vititoe, R. J. Genik, E. Smith, K. M. Mauritz, D. Edmunds, P.F. Ermolov, Andre Sznajder, Sándor Lökös, J. Yang, V. S. Burtovoi, M. D. Peters, R. Astur, L. Oesch, V. M. Podstavkov, R. J. Madaras, M. Fortner, C. Boswell, A. Baden, J. Perkins, Suman Bala Beri, G. C. Blazey, R. Yamada, N. Grossman, S. H. Ahn, Emanuela Barberis, J. Z.Y. Jiang, L. T. Goss, Orin I. Dahl, F. Landry, John Rutherfoord, E. A. Kozlovski, R. D. Schamberger, S. C. Loken, F. Borcherding, E. Oltman, Sarah Catherine Eno, Vyacheslav Klyukhin, F. Nang, Richard B. Lipton, K. S. Hahn, D. Cutts, S. Protopopescu, Greg Landsberg, S. Lami, T. L. Geld, G. Wang, Alberto Santoro, H. Haggerty, P. Rubinov, Cecilia Elena Gerber, Jianming Qian, Tong Hu, T. Joffe-Minor, H. E. Fisk, J. Solomon, K. Gounder, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, Y. M. Park, A. Jonckheere, Stephan Linn, N. Oshima, Daria Zieminska, P. Yamin, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, H. L. Melanson, P. Z. Quintas, S. K. Kim, J. H. Christenson, David H. Adams, B. Pawlik, D. Casey, J. Kotcher, N. Graf, C. K. Jung, T. McKibben, Alexander Vorobiev, B. G. Pope, Elizaveta Shabalina, A. Leflat, M. I. Martin, F. Stichelbaut, J. S. Kang, J. McDonald, S. Banerjee, V. Balamurali, and Robert Hirosky

Subjects
Physics, Particle physics, Branching fraction, Scalar (mathematics), Tevatron, General Physics and Astronomy, law.invention, Nuclear physics, Pair production, law, High Energy Physics::Experiment, Leptoquark, Fermilab, Collider, Lepton
Abstract

We have searched for first generation scalar leptoquark (LQ) pairs in the enu+jets channel using ppbar collider data (integrated luminosity= 115 pb^-1) collected by the DZero experiment at the Fermilab Tevatron during 1992-96. The analysis yields no candidate events. We combine the results with those from the ee+jets and nunu+jets channels to obtain 95% confidence level (CL) upper limits on the LQ pair production cross section as a function of mass and of beta, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% CL lower limits on the LQ mass of 225, 204, and 79 GeV/c^2 for beta=1, 1/2, and 0, respectively.

Published
1998

33. Search for Scalar Leptoquark Pairs Decaying to Electrons and Jets inp¯pCollisions

Author

B. G. Pope, Stephen Wimpenny, Joan A. Guida, V. A. Bezzubov, J. P. Negret, R. P. Smith, J. Cochran, J. Li, Matthew Jones, Elizaveta Shabalina, T. Marshall, Q. Z. Li-Demarteau, Gordon Watts, V. Sirotenko, N. Parua, Randy Ruchti, G. Di Loreto, Darien Wood, M. Bhattacharjee, H. A. Neal, H. C. Shankar, O. V. Eroshin, Phillip Gutierrez, G. Eppley, H. da Motta, J. G.R. Lima, S. Youssef, S. Choi, A. V. Kotwal, Harrison Prosper, Nicholas John Hadley, S. Blessing, Scott Snyder, D. Denisov, Srinivasan Rajagopalan, Thomas Ferbel, Robert J. McCarthy, A. Sanchez-Hernandez, C. S. Mishra, G. Guglielmo, S. M. Chang, P. Padley, Alexey Volkov, M. Sosebee, M. Goforth, C. K. Jung, T. McKibben, R. Markeloff, A. N. Galyaev, A. S. Ito, Vasken Hagopian, H. Weerts, Mitchell Wayne, H. Schellman, J. M. Kohli, Robert Hirosky, D.R. Green, J. Balderston, Lev Dudko, P. C. Bhat, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, C. Klopfenstein, Alexander Vorobiev, R. K. Shivpuri, Stefan Grünendahl, J. Thompson, D. R. Claes, B. Gómez, D. Stewart, Gervasio Gomez, W. Y. Chen, Gilvan Alves, P. Yamin, Hui Li, Michael Rijssenbeek, Sebastien Jonathan Kahn, S. N. Gurzhiev, M. Tartaglia, Eunil Won, J. M. Guida, Z. H. Zhu, George R. Kalbfleisch, M. Abolins, Shuichi Kunori, S. Mani, J. M. Hauptman, J. Bantly, Kaushik De, V. S. Narasimham, K. A. Johns, N. Grossman, W. E. Cooper, V. N. Evdokimov, J. Warchol, B. Baldin, A. Klatchko, A. V. Kostritskiy, A. A. Mayorov, D.S. Koltick, P. Mooney, J. T. Linnemann, W. M. Smart, T. Huehn, R. Madden, M. K. Fatyga, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, J. Snow, Sissel Hansen, L. Rasmussen, N. N. Biswas, Peter W. Draper, T. G. Trippe, Y. Fisyak, R. Lander, J. T. White, R. Engelmann, Liu Chen, N. K. Mondal, Y. Ducros, J. B. Singh, B. May, S. Chopra, C. T. Murphy, Sharon Hagopian, A. K.A. Maciel, K. Gounder, J. Featherly, J. Jaques, A. Leflat, L. Lueking, H.E. Miettinen, K. Bazizi, H. T. Diehl, Jong-Sung Yu, Marvin Johnson, B. Gibbard, M. Nicola, Yu. Pischalnikov, B. Lauer, M. A.C. Cummings, B. Hoeneisen, W. G. Cobau, M. I. Martin, F. Stichelbaut, Lee Sawyer, Sun Kee Kim, H. L. Melanson, P. Z. Quintas, K. Del Signore, H. Singh, L. Magaña-Mendoza, P. Hanlet, I. Adam, J. Sculli, B. Gobbi, J. Krane, J. Womersley, E. W. Anderson, Alexander Belyaev, D. Fein, Nikos Varelas, A. L. Lyon, Anurag Gupta, Victor Daniel Elvira, J. Z.Y. Jiang, F. Borcherding, A. Bross, J. McDonald, Hiroaki Aihara, A. V. Kozelov, T. Fahland, Y. M. Park, Raymond Brock, J. H. Christenson, Boaz Klima, P. Bloom, A. Boehnlein, Heriberto Castilla-Valdez, G.E. Forden, P. M. Tuts, G. P. Grim, D. Hedin, P. M. Sood, S. Banerjee, M. Demarteau, Allen Mincer, N. I. Bojko, T. Yasuda, M. Strauss, D. Norman, David H. Adams, Ricardo Piegaia, Sebastian Grinstein, E. G. Zverev, Brajesh C Choudhary, Peter Nemethy, V. Balamurali, Don Lincoln, Erich Varnes, S. Willis, M. Pang, Ulrich Heintz, Meenakshi Narain, S. Reucroft, S. R. Dugad, M. A. Shupe, L. T. Goss, C. Yoshikawa, M. Diesburg, M. Chung, D. Owen, E. Amidi, Howard Gordon, J. V.D. Wirjawan, A. Narayanan, Daniel John Karmgard, J. Tarazi, A. Jonckheere, K. C. Frame, O. Ramirez, E. Oltman, J. S. Hoftun, K. Davis, J. N. Butler, D. Casey, P. D. Grannis, H. Piekarz, J. Kotcher, J. Ellison, M. H.G. Souza, P. Yepes, N. Amos, K. W. Merritt, J. F. Bartlett, N. Graf, K. Genser, K. Streets, Vipin Bhatnagar, Robert Kehoe, R. Hernández-Montoya, Yanwen Liu, S. Fuess, H. E. Montgomery, R. Partridge, Elizabeth Gallas, Robert Snihur, H. Jostlein, Soon Yung Jun, M. L. Kelly, N. Sotnikova, H. Lan, Rajendran Raja, H. S. Mao, S. P. Denisov, R. W. Stephens, M. R. Krishnaswamy, Sarah Catherine Eno, F. Hsieh, A. Para, Sergey Chekulaev, E. A. Kozlovski, A. L. Spadafora, G. Blazey, D. P. Stoker, G. Finocchiaro, R. Jesik, P. I. Goncharov, S. Krzywdzinski, H. D. Wahl, V. I. Kochetkov, D. Buchholz, E. Flattum, V. Oguri, A. Zylberstejn, T.R. McMahon, M. Paterno, M. L. Stevenson, H. Greenlee, Vyacheslav Klyukhin, F. Nang, Brad Abbott, Richard B. Lipton, P. Tamburello, R. Astur, Andrew White, Sándor Lökös, P. Grudberg, J. Yang, A. Baden, Heng Xu, Y. E. Gutnikov, Anna Goussiou, J. Kourlas, Q. Liu, V. M. Podstavkov, M. Fortner, J. A. Wightman, C. Cretsinger, M. Strovink, John Hobbs, J. Perkins, E. James, R. Yamada, P. Gartung, N.V. Mokhov, M.K. Fatyga, Gregory R Snow, D. Chakraborty, S. H. Ahn, A. P. Heinson, J. S. Kang, R. D. Schamberger, M. R. Adams, Young-Sang Yu, S. Feher, B. S. Acharya, K. M. Mauritz, S. Lami, A. R. Clark, S. C. Loken, C. L. Kim, R. E. Hall, J. L. González Solís, Ting Hu, P.F. Ermolov, Orin I. Dahl, F. Landry, John Rutherfoord, Z. Casilum, N. A. Roe, V. S. Burtovoi, A. Brandt, A. Zieminski, R. J. Madaras, James C. Green, T. Heuring, S. Glenn, K. S. Hahn, D. Cutts, J. McKinley, D. A. Stoianova, Wagner Carvalho, S. Protopopescu, T. L.T. Thomas, Greg Landsberg, M. Merkin, T. L. Geld, S. A. Jerger, D. Vititoe, R. J. Genik, M. M. Baarmand, D. Edmunds, Cecilia Elena Gerber, Andre Sznajder, M. D. Peters, L. Oesch, Jianming Qian, C. Boswell, Suman Bala Beri, Tong Hu, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, J. Solomon, G. Wang, Alberto Santoro, H. Haggerty, P. Rubinov, Stephan Linn, N. Oshima, and Daria Zieminska

Subjects
Nuclear physics, Physics, Particle physics, Particle decay, Pair production, Branching fraction, Scalar (mathematics), General Physics and Astronomy, High Energy Physics::Experiment, Elementary particle, Leptoquark, HERA, Lepton
Abstract

We have searched for the pair production of first generation scalar leptoquarks in the $\mathrm{eejj}$ channel using the full data set $(123{\mathrm{pb}}^{\ensuremath{-}1})$ collected with the D0 detector at the Fermilab Tevatron during 1992--1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100% branching fraction of $\mathrm{eq}$, we set a lower limit on the mass of a first generation scalar leptoquark of $225\mathrm{GeV}{/c}^{2}$. The results of this analysis rule out the interpretation of the excess of high ${Q}^{2}$ events at DESY HERA as leptoquarks which decay exclusively to $\mathrm{eq}$.

Published
1997

34. Measurement of the Top Quark Pair Production Cross Section inpp¯Collisions

Author

M. Nicola, J. A. Guida, L. Markosky, G. Di Loreto, D. Denisov, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, R. L. McCarthy, L. Magaña-Mendoza, D. Stewart, S. N. Gurzhiev, James Linnemann, N. Parua, M. Merkin, Stephen Wimpenny, Michael A. Strauss, Quing Zhu, T. Marshall, K. S. Hahn, P. Grudberg, D. Cutts, Raymond Brock, Boaz Klima, C. Boswell, S. Abachi, Suman Bala Beri, Darien Wood, R. D. Schamberger, M. R. Krishnaswamy, Q. Z. Li-Demarteau, Nicholas John Hadley, Greg Landsberg, S. Blessing, T. L. Geld, D. Norman, Scott Snyder, R. Markeloff, S. Willis, M. Pang, Randy Ruchti, Natalie A. Roe, M. Paterno, F. Hsieh, S. Grünendahl, A. Para, Sergey Chekulaev, J. S. Kang, S. C. Loken, A. N. Galyaev, H. D. Wahl, D. Edmunds, S. Grinstein, Andre Sznajder, C. K. Jung, M. Bhattacharjee, A. L. Lyon, Shuichi Kunori, J. Bantly, I. Adam, P. Rubinov, W. E. Cooper, L. P. Chen, Daniel R Claes, M. D. Peters, L. Oesch, R. Hirosky, R. Keohoe, Y. E. Gutnokov, R. K. Shivpuri, N. Amos, K. W. Merritt, S. A. Jerger, A. Leflat, J. F. Bartlett, S. Fuess, J. Cochran, E. James, J. Borders, J. Z.Y. Jiang, J. Drinkard, M. Tartaglia, S. Glenn, C. Klopfenstein, J. McKinley, D. A. Stoianova, Wagner Carvalho, W. G. Cobau, M. I. Martin, Kenneth Johns, Andrew Brandt, Gordon Watts, F. Borcherding, Kaushik De, J. McDonald, G. Finocchiaro, L. T. Goss, J. Kotcher, D. Vititoe, R. J. Genik, V. Sirotenko, S. Feher, H. A. Gordon, H.E. Miettinen, O. V. Eroshin, M. Abolins, M. M. Baarmand, Sarah Catherine Eno, Phillip Gutierrez, Ricardo Piegaia, E. A. Kozlovski, O. I. Dahl, H. Haggerty, S. Lökös, K. Bazizi, N. Graf, S. Banerjee, V. Balamurali, K. Streets, Vipin Bhatnagar, P. Mooney, G. Wang, Alberto Santoro, S. Reucroft, C. Yoshikawa, Vyacheslav Klyukhin, F. Nang, A. Baden, A. Zieminski, D. Buchholz, R. Partridge, N. K. Mondal, Andrew White, Heriberto Castilla-Valdez, R. Hernández-Montoya, N. Sotnikova, C. S. Mishra, B. Gibbard, H. T. Diehl, H. Singh, J. M. Hauptman, Cecilia Elena Gerber, P. Tamburello, Heng Xu, G. Guglielmo, Anna Goussiou, G. C. Blazey, T. McMahon, R. Yamada, J. Kourlas, S. H. Ahn, A. Boehnlein, P. M. Sood, H. S. Mao, J. Krane, H. Lan, J. Sculli, Allan G Clark, D. L. Adams, Jianming Qian, Q. Liu, Gregory R Snow, John Hobbs, J. Ellison, J. Yang, Vasken Hagopian, H. Weerts, P. Gartung, T. McKibben, F. Landry, John Rutherfoord, K. M. Mauritz, S. Lami, H. L. Melanson, P. Z. Quintas, P.F. Ermolov, Mary Beth Adams, M. L. Kelly, V. M. Podstavkov, Young-Sang Yu, P. Yamin, T. Fahland, K. C. Frame, O. Ramirez, M. Fortner, M.K. Fatyga, Alexander Vorobiev, Lev Dudko, R. Jesik, D. Casey, Y. Fisyak, J. Perkins, V. S. Burtovoi, G. Eppley, J. H. Christenson, A. L. Spadafora, E. Flattum, A. I. Mincer, P. I. Goncharov, S. Mani, T. Joffe-Minor, C. Yanagisawa, James C. Green, S. Choi, H. da Motta, J. G.R. Lima, H. E. Fisk, H. Tong, R. Madden, L. Rasmussen, Peter W. Draper, J. Solomon, Rajendran Raja, Yueh-Feng Liu, A. Sanchez-Hernandez, Elizaveta Shabalina, Pushpalatha C Bhat, B. Lauer, M. H.G. Souza, P. Yepes, H. E. Montgomery, A. S. Ito, T. L T Thomas, J. T. White, J. Balderston, E. G. Zverev, B. Hoeneisen, Lee Sawyer, D. Nešić, Brad Abbott, R. L. Lander, D. Lincoln, Eunil Won, P. Bloom, J. A. Wightman, Y. M. Park, S.A. Kahn, Sergey Denisov, N. I. Bojko, H. Ting, M. Demarteau, Meenakshi Narain, C. Murphy, R. Astur, J. Li, T. Heuring, A. Jonckheere, Stephan Linn, J. S. Hoftun, K. Davis, J. N. Butler, P. D. Grannis, H. Piekarz, A. Narayanan, N. Oshima, Daria Zieminska, B. Baldin, H. Li, Y. Ducros, A. Smith, E. Amidi, B. May, Victor Daniel Elvira, M. A C Cumings, D. P. Stoker, B. Gobbi, Anurag Gupta, Jasvinder A. Singh, S. Youssef, T. Yasuda, J. Featherly, Marvin Johnson, A. V. Kozelov, C. Cretsinger, J. V.D. Wirjawan, M. Strovink, V. Oguri, M. L. Stevenson, Elizabeth Gallas, D. Pušeljić, R. J. Madaras, W. Smart, Alexander Belyaev, Gervasio Gomez, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, S. Chopra, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, M. Diesburg, D. Owen, J. Tarazi, V. A. Bezzubov, J. P. Negret, R. P. Smith, Michael Shupe, A. V. Kotwal, Harrison Prosper, P. M. Tuts, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, V. N. Evdokimov, J. Warchol, D.S. Koltick, J. M. Guida, D. Hedin, G. E. Forden, A. P. Heinson, Mark Sosebee, R. E. Hall, J. L. González Solís, R. Snihur, Z. Casilum, T. Huehn, N. Varelas, S. M. Chang, D. Fein, Erich Varnes, J. M. De Miranda, Soon Yung Jun, N. Grossman, S. Krzywdzinski, V. I. Kochetkov, A. Zylberstejn, P. Nemethy, H. Greenlee, Dhiman Chakraborty, Roderich Engelmann, K. Del Signore, Matthew Jones, A. Bross, Serban Protopopescu, T. G. Trippe, C. L. Kim, Hiroaki Aihara, Sharon Hagopian, A. K.A. Maciel, G. P. Grim, R. W. Stephens, L. Leuking, E. Oltman, W. Y. Chen, Gilvan Alves, George R. Kalbfleisch, V. S. Narasimham, A. A. Mayorov, M. K. Fatyga, J. Snow, J. Jaques, Ron Lipton, J. Womersley, Nikolai Mokhov, Brajesh C Choudhary, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, M. Goforth, Jinhong Yu, A. Klatchko, M. Chung, Sun Kee Kim, E. W. Anderson, P. Padley, Alexey Volkov, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, B. Gómez, Z. H. Zhu, Shashikant Dugad, A. V. Kostritskiy, B. G. Pope, and Sissel Hansen

Subjects
Physics, Top quark, Particle physics, Luminosity (scattering theory), Tevatron, General Physics and Astronomy, D0 experiment, law.invention, Nuclear physics, Pair production, law, Fermilab, Collider, Lepton
Abstract

We present a measurement of the ttbar production cross section in ppbar collisions at root(s) = 1.8TeV by the D0 experiment at the Fermilab Tevatron. The measurement is based on data from an integrated luminosity of approximately 125 pb^-1 accumulated during the 1992-1996 collider run. We observe 39 ttbar candidate events in the dilepton and lepton+jets decay channels with an expected background of 13.7+-2.2 events. For a top quark mass of 173.3GeV/c^2, we measure the ttbar production cross section to be 5.5+-1.8 pb.

Published
1997

35. Limits on AnomalousWWγCouplings frompp¯→Wγ+XEvents at√s=1.8TeV

Author

B. Baldin, Y. Ducros, J. B. Singh, S. Youssef, Robert J. McCarthy, A. Sanchez-Hernandez, D.R. Green, J. Balderston, Eunil Won, Victor Daniel Elvira, M. Nicola, P. Bloom, N. I. Bojko, Yu. Pischalnikov, M. A. Shupe, J. S. Hoftun, J. N. Butler, P. D. Grannis, H. Piekarz, M. Bhattacharjee, Bobby Samir Acharya, Gordon Watts, J. M. Hauptman, B. May, Peter Nemethy, V. Sirotenko, O. V. Eroshin, V. A. Bezzubov, A. Jonckheere, J. P. Negret, Stephan Linn, Andrew White, H. L. Melanson, P. Z. Quintas, R. P. Smith, H. A. Neal, H. C. Shankar, N. Oshima, S. K. Kim, Phillip Gutierrez, Daria Zieminska, B. Gobbi, J. H. Christenson, M. H.G. Souza, J. F. Lebrat, Matthew Jones, S. M. Chang, Howard Gordon, G. Eppley, H. da Motta, J. G.R. Lima, K. C. Frame, Heriberto Castilla-Valdez, A. V. Kotwal, Harrison Prosper, M. Abolins, O. Ramirez, H. E. Montgomery, A. S. Ito, G.E. Forden, M. Goforth, G. Álvarez, L. T. Kerth, Q. Z. Li-Demarteau, P. Mooney, J. Kotcher, S. P. Denisov, D. Stewart, F. Lobkowicz, N. Parua, Randy Ruchti, N. Graf, Sebastien Jonathan Kahn, S. N. Gurzhiev, P. Yamin, N. K. Mondal, K. Streets, Vipin Bhatnagar, H. T. Diehl, M. R. Krishnaswamy, T. Rockwell, Iain Alexander Bertram, C. S. Mishra, C. Klopfenstein, R. Partridge, H. Singh, S. Lami, J. Krane, G. Griffin, Michael Rijssenbeek, J. M. Guida, P.F. Ermolov, A. Boehnlein, F. Hsieh, S. Mani, H. S. Mao, D. L. Adams, P. M. Sood, Vasken Hagopian, R. Astur, V. S. Burtovoi, A. Para, H. Weerts, Dhiman Chakraborty, J. Ellison, Sergey Chekulaev, J. Bendich, V. N. Evdokimov, D.S. Koltick, Meenakshi Narain, A. Klatchko, Lev Dudko, J. T. Linnemann, R. W. Stephens, S. Fuess, J. T. White, R. Madden, M. Chung, L. Rasmussen, L. Lueking, I. Adam, Quing Zhu, T. Heuring, Peter W. Draper, W. M. Smart, S. Glenn, Pushpalatha C Bhat, M. Mudan, R. J. Madaras, D. P. Stoker, G. Wang, Alberto Santoro, K. Del Signore, H. Haggerty, K. W. Merritt, J. McKinley, D. A. Stoianova, Wagner Carvalho, A. Narayanan, T. G. Trippe, D. Buchholz, A. L. Spadafora, P. I. Goncharov, J. F. Bartlett, B. Lauer, B. Hoeneisen, Lee Sawyer, Hiroaki Aihara, Robert Kehoe, P. Tamburello, Heng Xu, Cecilia Elena Gerber, Sharon Hagopian, W. Guryn, M. Sosebee, A. K.A. Maciel, Anna Goussiou, S. Fahey, Yanwen Liu, P. M. Tuts, G. P. Grim, J. Jaques, D. Hedin, Hui Li, J. A. Wightman, A. M. Smith, A. Leflat, Robert Hirosky, Y. M. Park, Robert Snihur, Jianming Qian, D. Vititoe, R. J. Genik, J. Bantly, Gregory R Snow, J. Womersley, K. Bazizi, M. Demarteau, W. Y. Chen, Gilvan Alves, M. L. Kelly, George R. Kalbfleisch, W. G. Cobau, M. I. Martin, J. S. Kang, Y. Fisyak, Paolo Franzini, V. S. Narasimham, Tong Hu, C. Boswell, J. Featherly, L. Markosky, A. A. Mayorov, Joan A. Guida, S. Abachi, E. G. Zverev, Andrew Brandt, R. Engelmann, Liu Chen, Brajesh C Choudhary, V. Glebov, Marvin Johnson, A. L. Lyon, M. K. Fatyga, T. Joffe-Minor, C. Yanagisawa, J. Snow, N. Sotnikova, G. Di Loreto, H.E. Miettinen, Suman Bala Beri, A. V. Kozelov, H. E. Fisk, J. Solomon, D. Denisov, J. McDonald, Srinivasan Rajagopalan, Thomas Ferbel, D. Edmunds, C. Cretsinger, M. Strovink, E. James, B. I. Klochkov, Andre Sznajder, M. D. Peters, Shuichi Kunori, K. A. Johns, L. Oesch, P. Robinov, S. Banerjee, V. Balamurali, C. T. Murphy, C. K. Jung, T. McKibben, Alexander Vorobiev, S. Reucroft, C. Yoshikawa, B. G. Pope, Elizaveta Shabalina, P. Grudberg, Y. E. Gutnikov, J. Kourlas, Q. Liu, John Hobbs, Young-Sang Yu, N. A. Roe, D. Pušeljić, E. Flattum, A. Bischoff, A. V. Kostritskiy, Sissel Hansen, G. Guglielmo, E. W. Anderson, V. Oguri, Allen Mincer, T.R. McMahon, M. Paterno, M. L. Stevenson, J. Warchol, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, B. Gómez, Z. H. Zhu, Shashikant Dugad, Elizabeth Gallas, H. Jostlein, R. Hernández-Montoya, H. Lan, A. N. Galyaev, G. Finocchiaro, H. D. Wahl, W. E. Cooper, Daniel R Claes, E. Amidi, T. Yasuda, J. V.D. Wirjawan, Allan G Clark, P. Gartung, M.K. Fatyga, C. L. Kim, Jong-Sung Yu, L. Magaña-Mendoza, N.V. Mokhov, Raymond Brock, Boaz Klima, D. Norman, S. Willis, M. Pang, A. P. Heinson, K. S. Hahn, D. Cutts, Greg Landsberg, R. E. Hall, T. L. Geld, J. L. González Solís, E. Oltman, F. Borcherding, M. M. Baarmand, Sarah Catherine Eno, S. Krzywdzinski, Sándor Lökös, J. Yang, Vyacheslav Klyukhin, V. I. Kochetkov, F. Nang, Richard B. Lipton, Ying Li, A. Baden, G. C. Blazey, R. Yamada, A. Zylberstejn, S. H. Ahn, V. M. Podstavkov, H. Greenlee, Orin I. Dahl, John Rutherfoord, Mary Beth Adams, M. Fortner, James C. Green, A. Bross, J. Perkins, Alexander Belyaev, Serban Protopopescu, Ulrich Heintz, M. Diesburg, D. Owen, S. Choi, J. Tarazi, N. Grossman, J. Borders, Gervasio Gomez, T. Huehn, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, N. N. Biswas, D. Fein, S. Chopra, J. Z.Y. Jiang, Don Lincoln, Erich Varnes, J. M. De Miranda, L. T. Goss, Jing Li, B. Gibbard, E. A. Kozlovski, J. Sculli, Nikos Varelas, R. K. Shivpuri, D. Nesic, S. A. Jerger, R. D. Schamberger, S. C. Loken, J. Drinkard, T. Fahland, M. Tartaglia, S. Feher, Ting Hu, Kaushik De, A. Zieminski, P. A. Rapidis, S. Y. Jun, T. L.T. Thomas, D. Casey, S. H. Aronson, P. Yepes, K. Genser, Rajendran Raja, Brad Abbott, N. Amos, Stephen Wimpenny, M. A. C. Cummings, T. Marshall, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, and R. Markeloff

Subjects
Massless particle, Physics, Coupling, Particle physics, Gauge boson, Branching fraction, Particle model, General Physics and Astronomy, Elementary particle, Standard Model, Boson
Abstract

We have measured the $\mathrm{WW}\ensuremath{\gamma}$ gauge boson coupling parameters using $p\overline{p}\ensuremath{\rightarrow}\ensuremath{\ell}\ensuremath{\nu}\ensuremath{\gamma}+X$ ( $\ensuremath{\ell}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}e,\ensuremath{\mu}$) events at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8$ TeV. The data, corresponding to an integrated luminosity of $92.8{\mathrm{pb}}^{\ensuremath{-}1}$, were collected using the D\O{} detector at the Fermilab Tevatron Collider. The measured cross section times branching ratio for $p\overline{p}\ensuremath{\rightarrow}W\ensuremath{\gamma}+X$ with ${p}_{T}^{\ensuremath{\gamma}}g10$ GeV/c and ${R}_{\ensuremath{\ell}\ensuremath{\gamma}}g0.7$ is ${11.3}_{\ensuremath{-}1.5}^{+1.7}\ifmmode\pm\else\textpm\fi{}1.5$ pb, in agreement with the standard model prediction. The 1 degree of freedom 95% confidence level limits on individual CP-conserving parameters are $\ensuremath{-}0.93l\ensuremath{\Delta}\ensuremath{\kappa}l0.94$ and $\ensuremath{-}0.31l\ensuremath{\lambda}l0.29$. Similar limits are set on the CP-violating coupling parameters.

Published
1997

36. Study of theZZγandZγγCouplings inZ(νν)γProduction

Author

S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, Hui Li, A. Para, Sergey Chekulaev, J. Bantly, I. Adam, K. W. Merritt, J. F. Bartlett, Robert Kehoe, Yanwen Liu, Robert Snihur, M. L. Kelly, H. A. Neal, H. C. Shankar, S. R. Dugad, R. Markeloff, Howard Gordon, K. C. Frame, O. Ramirez, B. Gibbard, M. Goforth, J. M. Hauptman, J. Sculli, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, L. A. Markosky, P. Bloom, S. Feher, J. Jaques, N. I. Bojko, Nikos Varelas, A. N. Galyaev, Ting Hu, J. Womersley, Gervasio Gomez, Heriberto Castilla-Valdez, G. Guglielmo, A. Zieminski, W. E. Cooper, G. Finocchiaro, M. Abolins, M. Nicola, M. A. Shupe, Yu. Pischalnikov, Marc M Baarmand, H. D. Wahl, P. Mooney, C. Shaffer, J. S. Hoftun, K. Davis, J. N. Butler, D. Cullen-Vidal, E. W. Anderson, A. Goldschmidt, Elizabeth Gallas, H. Jostlein, P. A. Rapidis, N. K. Mondal, H. T. Diehl, H. Singh, P. D. Grannis, E. G. Zverev, H. Piekarz, L. Lueking, N. N. Biswas, M. Strauss, J. Krane, A. Boehnlein, Brajesh C Choudhary, Jong-Sung Yu, P. M. Sood, T. Yasuda, S. Chopra, Peter Nemethy, B. May, G. Eppley, J. Ellison, H. da Motta, K. Del Signore, L. Magaña-Mendoza, S. Fuess, J. G.R. Lima, S. Y. Jun, B. Gobbi, R. Partridge, T. L.T. Thomas, A. S. Ito, C. S. Mishra, R. D. Schamberger, Allen Mincer, S. C. Loken, R. Jesik, Hiroaki Aihara, G.E. Forden, R. Hernández-Montoya, Sebastian Grinstein, Raymond Brock, Boaz Klima, D. Stewart, Jing Li, H. Lan, Sebastien Jonathan Kahn, S. N. Gurzhiev, J. Cochran, P. M. Tuts, D. Norman, A. D. Bross, G. P. Grim, V. A. Bezzubov, Vasken Hagopian, J. P. Negret, R. P. Smith, H. Weerts, S. Willis, M. Pang, K. S. Hahn, D. Cutts, Lev Dudko, M. Merkin, S. Protopopescu, V. Oguri, Greg Landsberg, D. Buchholz, T.R. McMahon, M. Paterno, M. L. Stevenson, Quing Zhu, S. Lami, T. L. Geld, Shuichi Kunori, K. A. Johns, Harrison Prosper, J. Warchol, P. Gartung, M.K. Fatyga, J. T. White, D. Casey, C. T. Murphy, Sándor Lökös, J. Yang, J. Kotcher, B. S. Acharya, D. Nesic, C. L. Kim, Matthew Jones, Robert Hirosky, P. Tamburello, V. M. Podstavkov, S. A. Jerger, N. Graf, A. Klatchko, E. Amidi, J. V.D. Wirjawan, M. Fortner, J. Perkins, M. Chung, S. Youssef, S. Choi, Robert J. McCarthy, W. Y. Chen, Heng Xu, Gilvan Alves, R. K. Shivpuri, D. Hedin, S. M. Chang, H. L. Melanson, P. Z. Quintas, A. Sanchez-Hernandez, George R. Kalbfleisch, V. S. Narasimham, S. Reucroft, D. R. Claes, J. Drinkard, M. Tartaglia, Ulrich Heintz, A. Gupta, Q. Z. Li-Demarteau, Anna Goussiou, D.R. Green, J. Balderston, S. K. Kim, J. H. Christenson, Meenakshi Narain, A. V. Kotwal, C. Yoshikawa, Kaushik De, P. C. Bhat, F. Lobkowicz, M. Diesburg, A. A. Mayorov, David H. Adams, M. K. Fatyga, T. Rockwell, Iain Alexander Bertram, N. Parua, J. A. Wightman, A. M. Smith, J. Snow, Eunil Won, A. L. Spadafora, D. Owen, P. I. Goncharov, A. Narayanan, Michael Rijssenbeek, C. Klopfenstein, K. Streets, Vipin Bhatnagar, P. Yepes, Randy Ruchti, A. V. Kostritskiy, N. Amos, K. Genser, J. Tarazi, B. Baldin, Gregory R Snow, Y. Ducros, J. B. Singh, Rajendran Raja, Stephen Wimpenny, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, Sissel Hansen, T. Marshall, Joan A. Guida, Gordon Watts, V. Sirotenko, N.V. Mokhov, Darien Wood, W. M. Smart, N. Sotnikova, G. Di Loreto, O. V. Eroshin, H. S. Mao, Phillip Gutierrez, Victor Daniel Elvira, Brad Abbott, Nicholas John Hadley, A. P. Heinson, S. Blessing, T. G. Trippe, D. Denisov, Scott Snyder, K. Bazizi, Srinivasan Rajagopalan, Sharon Hagopian, A. K.A. Maciel, Thomas Ferbel, R. E. Hall, J. L. González Solís, D. Edmunds, Y. Fisyak, T. Huehn, R. Lander, D. Fein, R. Piegaia, D. Chakraborty, J. Featherly, P. Padley, Alexey Volkov, Don Lincoln, Marvin Johnson, K. M. Mauritz, Andre Sznajder, Erich Varnes, J. M. De Miranda, A. L. Lyon, A. V. Kozelov, Mitchell Wayne, H. Schellman, J. M. Kohli, P.F. Ermolov, Stefan Grünendahl, J. Thompson, V. S. Burtovoi, B. Gómez, M. D. Peters, L. Oesch, M. Demarteau, Z. H. Zhu, Alexander Belyaev, C. Cretsinger, N. Grossman, M. Strovink, J. Borders, S. Krzywdzinski, E. James, V. I. Kochetkov, T. Fahland, J. Z.Y. Jiang, A. Zylberstejn, Jan M. Guida, C. Boswell, H. Greenlee, L. T. Goss, S. Abachi, R. Astur, M. Bhattacharjee, Suman Bala Beri, E. A. Kozlovski, R. J. Madaras, P. Yamin, S. Mani, T. Heuring, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, R. Madden, L. Rasmussen, Peter W. Draper, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, D. Vititoe, R. J. Genik, Y. M. Park, R. W. Stephens, M. H.G. Souza, H. E. Montgomery, D. P. Stoker, A. Jonckheere, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, A. Leflat, M. I. Martin, J. S. Kang, J. McDonald, S. Banerjee, V. Balamurali, B. G. Pope, Elizaveta Shabalina, C. K. Jung, T. McKibben, Cecilia Elena Gerber, Jianming Qian, Tong Hu, D. Pušeljić, E. Flattum, G. Wang, Alberto Santoro, H. Haggerty, P. Rubinov, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, Andrew White, J. Solomon, P. Grudberg, Y. E. Gutnikov, J. Kourlas, Q. Liu, John Hobbs, M. R. Adams, Young-Sang Yu, N. A. Roe, F. Borcherding, E. Oltman, Sarah Catherine Eno, Vyacheslav Klyukhin, F. Nang, Richard B. Lipton, A. Baden, G. C. Blazey, R. Yamada, S. H. Ahn, Orin I. Dahl, F. Landry, John Rutherfoord, James C. Green, W. G. Cobau, and M. Sosebee

Subjects
Physics, General Physics and Astronomy
Published
1997

37. Search for Diphoton Events with Large Missing Transverse Energy inpp¯Collisions at=1.8TeV

Author

Stephen Wimpenny, D. Stewart, S. N. Gurzhiev, T. Marshall, J. Bendich, Darien Wood, Nicholas John Hadley, S. Blessing, G. Wang, Alberto Santoro, Scott Snyder, Quing Zhu, R. Markeloff, Seong Keun Kim, J. Mc Donald, C. L. Kim, Hiroaki Aihara, S. Fuess, S. Glenn, P. M. Tuts, G. P. Grim, D. A. Stoianova, R. W. Stephens, Suyong Choi, Gordon Watts, Wagner Carvalho, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, E. G. Zverev, L. Markosky, Joan A. Guida, D. Vititoe, G. Di Loreto, D. Nešić, S. Youssef, R. J. Genik, J. Jaques, A. Sanchez-Hernandez, Haifeng Li, Ron Lipton, T. Joffe-Minor, D. Denisov, C. S. Mishra, N. Parua, C. Yanagisawa, Matthew Jones, G. Guglielmo, R. Snihur, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, Randy Ruchti, Andrew White, H. E. Fisk, C. Boswell, Robert Kehoe, J. Womersley, P. Grudberg, Y. E. Gutnikov, Vasken Hagopian, N. Varelas, H. Weerts, J. Kourlas, J. Balderston, J. Yang, B. Gibbard, Lev Dudko, Meenakshi Narain, S. Abachi, Nikolai Mokhov, S. M. Chang, D. Lincoln, J. Solomon, M. Nicola, V. M. Podstavkov, F. Lobkowicz, M. H.G. Souza, P. Yamin, Suman Bala Beri, Eunil Won, P. Bloom, J. A. Wightman, N. I. Bojko, I. Adam, P. Rubinov, K. W. Merritt, Q. Z. Li Demarteau, A. L. Spadafora, Brajesh C Choudhary, Alexander Vorobiev, Q. Liu, John Hobbs, Young-Sang Yu, M. L. Stevenson, B. May, M. Fortner, J. Perkins, P. Yepes, H. E. Montgomery, W. Y. Chen, Gilvan Alves, George R. Kalbfleisch, J. S. Hoftun, J. N. Butler, A. Narayanan, M. Sosebee, P. D. Grannis, S. Fahey, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, B. I. Klochkov, M. Bhattacharjee, D. Pušeljić, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, R. Jesik, H. Piekarz, A. N. Galyaev, Bobby Samir Acharya, H. A. Neal, B. Gobbi, D. P. Stoker, A. A. Mayorov, J. M. Hauptman, Cecilia Elena Gerber, R. Hirosky, D. Edmunds, H. C. Shankar, J. T. Linnemann, P. I. Goncharov, W. Guryn, P. A. Rapidis, M. K. Fatyga, J. Bantly, M. Goforth, A. L. Lyon, Andre Sznajder, Shuichi Kunori, B. Baldin, W. E. Cooper, J. F. Bartlett, Jianming Qian, Yanwen Liu, L. Lueking, Dhiman Chakraborty, Jasvinder A. Singh, M. D. Peters, Jinhong Yu, J. Snow, S. Lami, L. T. Kerth, Y. Ducros, A. Jonckheere, P.F. Ermolov, B. G. Pope, Stephan Linn, T. Rockwell, Iain Alexander Bertram, Michael Rijssenbeek, Daniel R Claes, L. Oesch, T. Yasuda, A. Klatchko, Tong Hu, V. N. Evdokimov, K. Bazizi, N. Oshima, K. Del-Signore, M. Abolins, Daria Zieminska, Andrew Brandt, R. Engelmann, Liu Chen, J. L. González-Solís, T. Mc Mahon, R. D. Schamberger, A. Smith, N. A. Roe, G. Finocchiaro, Sharon Hagopian, T. Mc Kibben, C. Murphy, D.S. Koltick, P. Mooney, R. Astur, S. P. Denisov, V. Oguri, J. F. Lebrat, M. Chung, Elizaveta Shabalina, Victor Daniel Elvira, T. Heuring, H.E. Miettinen, A. K.A. Maciel, V. S. Burtovoi, Heriberto Castilla-Valdez, N. K. Mondal, Pushpalatha C Bhat, M. Mudan, H. T. Diehl, M. R. Krishnaswamy, A. Boehnlein, Peter Nemethy, J. T. White, F. Hsieh, J. Warchol, L. Magaña-Mendoza, P. M. Sood, G. Eppley, S. Reucroft, C. Yoshikawa, S. A. Jerger, S. Grünendahl, A. Para, J. Ellison, B. Lauer, M. A.C. Cummings, B. Hoeneisen, Sergey Chekulaev, W. G. Cobau, M. I. Martin, J. S. Kang, H. da Motta, J. G.R. Lima, C. K. Jung, Raymond Brock, Boaz Klima, Elizabeth Gallas, N. Amos, Lee Sawyer, A. S. Ito, D. Norman, S. Banerjee, J. Borders, S. Willis, M. Pang, V. Balamurali, J. Z.Y. Jiang, M. L. Kelly, Howard Gordon, Y. M. Park, K. C. Frame, O. Ramirez, L. T. Goss, D. Buchholz, S.A. Kahn, M. Demarteau, R. J. Madaras, W. Smart, K. A. Johns, E. A. Kozlovski, P. Tamburello, Heng Xu, H. Haggerty, Anna Goussiou, S. Lökös, E. Amidi, J. M. Guida, D. Hedin, Gregory R Snow, J. V.D. Wirjawan, V. A. Bezzubov, J. P. Negret, R. P. Smith, Michael Shupe, A. V. Kotwal, Harrison Prosper, F. Borcherding, E. Oltman, M. M. Baarmand, Sarah Catherine Eno, Vyacheslav Klyukhin, F. Nang, Ying Li, A. Baden, J. Sculli, R. K. Shivpuri, G. C. Blazey, J. Drinkard, M. Tartaglia, Kaushik De, R. Yamada, S. H. Aronson, S. H. Ahn, Orin I. Dahl, John Rutherfoord, Mary Beth Adams, H. D. Wahl, P. Padley, Alexey Volkov, James H Cochran, James C. Green, Mitchell Wayne, A. Leflat, H. Schellman, J. M. Kohli, J. Thompson, K. S. Hahn, B. Gómez, Z. H. Zhu, D. Cutts, Shashikant Dugad, A. Bischoff, A. V. Kostritskiy, Greg Landsberg, Sissel Hansen, T. L. Geld, M. Paterno, E. W. Anderson, H. Singh, J. Mc Kinley, Allen Mincer, C. Klopfenstein, A. Goldschmidt, R. Hernández-Montoya, N. Sotnikova, T. Fahland, J. Krane, H. Lan, Allan G Clark, S. Feher, Ting Hu, P. Gartung, M.K. Fatyga, A. Zieminski, S. Y. Jun, T. L.T. Thomas, D. Casey, Y. Pischalnikov, Ulrich Heintz, H. Jöstlein, M. Diesburg, D. Owen, J. Tarazi, Rajendran Raja, Alexander Belyaev, Gervasio Gomez, S. C. Loken, C. Shaffer, D. Cullen-Vidal, K. Genser, N. N. Biswas, S. Chopra, Brad Abbott, G. E. Forden, A. P. Heinson, R. E. Hall, T. Huehn, D. Fein, Erich Varnes, J. M. De Miranda, N. Grossman, Jing Li, S. Krzywdzinski, V. I. Kochetkov, A. Zylberstejn, H. Greenlee, A. Bross, Serban Protopopescu, C. Cretsinger, M. Strovink, E. James, R. Mc Carthy, J. Featherly, V. Glebov, Marvin Johnson, A. V. Kozelov, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, G. Griffin, H. S. Mao, D. L. Adams, H. L. Melanson, P. Z. Quintas, Y. Fisyak, J. H. Christenson, G. Álvarez, J. Kotcher, and N. Graf

Subjects
Physics, Particle physics, Selectron tube, Pseudorapidity, Neutralino, General Physics and Astronomy, Gravitino, Elementary particle, Supersymmetry, Lepton, Boson
Abstract

A search for new physics has been carried out in the channel pp→γγ+E T , as expected in various supersymmetric models. We require two photons with transverse energy E T γ >12GeV and pseudorapidity |η γ | T ) is consistent with background and no events have E T >25GeV. We set limits on production cross sections for selectron, sneutrino, and neutralino pairs, decaying into photons, which range from about 400 fb to 1 pb depending on the sparticle masses. A general limit of 185 fb (95% C.L.) is set on σ(pp→γγE T +X), where E T γ >12GeV, |η γ | T >25GeV.

Published
1997

38. Isolated Photon Cross Section in the Central and Forward Rapidity Regions inpp¯Collisions at√s=1.8TeV

Author

T. McKibben, M. V. S. Rao, N. Parua, C. Murphy, Sunanda Banerjee, R. Astur, Alexander Vorobiev, T. Heuring, B. Gibbard, J. Jaques, A. N. Galyaev, S. Krzywdzinski, V. I. Kochetkov, Pushpalatha C Bhat, A. Zylberstejn, S. Igarashi, P. R. G. Virador, H. Greenlee, A. Bross, Ron Lipton, Serban Protopopescu, J. Sculli, M. Mudan, Q. Z. Li-Demarteau, G. Eppley, D. Casey, W. Y. Chen, J. Womersley, I. Adam, P. Rubinov, Randy Ruchti, F. Borcherding, K. W. Merritt, George R. Kalbfleisch, Nikolai Mokhov, K. Streets, Vipin Bhatnagar, H. da Motta, J. G.R. Lima, H. D. Wahl, D. Pušeljić, M. Abolins, H. Tong, C. S. Mishra, A. L. Spadafora, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, W. X. Gu, S. Margulies, S. Lami, W. E. Cooper, Daniel R Claes, G. Guglielmo, J. F. Bartlett, B. Hoeneisen, Lee Sawyer, P.F. Ermolov, E. Oltman, Rajendran Raja, S. Feher, R. Partridge, P. Mooney, S. C. Loken, E. Flattum, S. A. Jerger, C. Cretsinger, Stephen Wimpenny, M. A. C. Cummings, A. A. Mayorov, M. K. Fatyga, A. Leflat, J. Bendich, Vasken Hagopian, H. Weerts, Yanwen Liu, M. Strovink, E. Amidi, Suyong Choi, J. Snow, J. V.D. Wirjawan, J. R. T. de Mello Neto, E. James, L. Lueking, G. Griffin, A. S. Ito, N. K. Mondal, H. T. Diehl, B. May, R. Snihur, M. M. Baarmand, Sarah Catherine Eno, Brajesh C Choudhary, W. G. Cobau, M. I. Martin, Brad Abbott, T. Marshall, V. S. Burtovoi, J. S. Kang, Y. M. Park, S. Glenn, S.A. Kahn, J. McKinley, D. A. Stoianova, Wagner Carvalho, Gilvan Alves, M. Bhattacharjee, Darien Wood, Nicholas John Hadley, N. Varelas, M. Demarteau, R. E. Avery, A. Boehnlein, P. M. Sood, J. Ellison, S. Fuess, S. Blessing, Vyacheslav Klyukhin, Ying Li, A. Baden, H. Tao, G. C. Blazey, R. Hirosky, Scott Snyder, K. Bazizi, R. Markeloff, Elizabeth Gallas, R. Hatcher, N. A. Roe, C. H. Park, H. S. Mao, A. Bischoff, D. L. Adams, J. F. Glicenstein, A. V. Kostritskiy, Andrew White, M. Chung, Matthew Jones, P. A. Rapidis, I. Bertram, S. M. Chang, B. Gobbi, G. Wang, Alberto Santoro, Seong Keun Kim, Jasvinder A. Singh, M. Nichola, R. K. Shivpuri, R. Yamada, S. Youssef, C. Klopfenstein, C. L. Kim, Hiroaki Aihara, A. Jonckheere, F. Lobkowicz, D. Vititoe, Gordon Watts, P. Grudberg, T. McMahon, Stephan Linn, H. Johnstad, T. Joffe-Minor, T. Yasuda, C. Yanagisawa, A. Zieminski, H. E. Fisk, Y. E. Gutnikov, J. Drinkard, H. Johari, V. Balamurali, S. H. Ahn, R. J. Genik, P. I. Goncharov, Kenneth Johns, V. Sirotenko, W. Guryn, M. Tartaglia, P. M. Tuts, J. Featherly, V. Glebov, L. Markosky, Joan A. Guida, R. W. Stephens, J. Kourlas, B. G. Pope, N. Oshima, Sissel Hansen, O. V. Eroshin, D. Buchholz, Marvin Johnson, J. Solomon, W. Smart, G. Di Loreto, A. V. Kozelov, Orin I. Dahl, John Rutherfoord, T. L. Taylor, Kaushik De, Phillip Gutierrez, Mary Beth Adams, S. H. Aronson, Daria Zieminska, John Hobbs, R. D. Schamberger, A. Smith, J. F. Lebrat, E. G. Zverev, P. Tamburello, Heng Xu, C. Boswell, Dhiman Chakraborty, Elizaveta Shabalina, F. Nang, Young-Sang Yu, T. Rockwell, Raymond Brock, Boaz Klima, R. L. Dixon, Robert Kehoe, D. Nešić, S. Abachi, Heriberto Castilla-Valdez, Y. Pischalnikov, Ulrich Heintz, M. L. Kelly, G. Álvarez, V. Oguri, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, D. Norman, J. T. Linnemann, J. Balderston, Howard Gordon, James C. Green, S. Y. Jun, B. I. Klochkov, Michael Rijssenbeek, K. C. Frame, O. Ramirez, P. Yamin, H. Jöstlein, R. Hernández-Montoya, J. M. Hauptman, Suman Bala Beri, D. Denisov, Cecilia Elena Gerber, J. T. White, Sharon Hagopian, M. Goforth, S. Willis, M. Pang, K. S. Hahn, D. Cutts, C. K. Jung, J. Kotcher, A. K.A. Maciel, Haifeng Li, S. Mani, Jinhong Yu, J. Warchol, Gregory R Snow, Greg Landsberg, R. L. McCarthy, M. Diesburg, S. P. Denisov, Srinivasan Rajagopalan, Jianming Qian, R. Madden, A. L. Read, Allan G Clark, A. Klatchko, D. Lincoln, Thomas Ferbel, Dan Green, T. L. Geld, H. Ting, L. Rasmussen, Peter W. Draper, A. Goldschmidt, M. R. Krishnaswamy, Eunil Won, P. Padley, D. Owen, Alexey Volkov, James H Cochran, M. Paterno, D. Edmunds, E. Neis, F. Hsieh, S. Grünendahl, Mitchell Wayne, M.K. Fatyga, J. Tarazi, Meenakshi Narain, A. Peryshkin, H. Schellman, J. M. Kohli, V. N. Evdokimov, Andre Sznajder, A. Para, Sergey Chekulaev, B. Baldin, Peter Nemethy, N. Graf, J. Thompson, M. D. Peters, D.S. Koltick, T. Fahland, Y. Ducros, S. Fahey, Gervasio Gomez, B. Gómez, Z. H. Zhu, L. Oesch, J. Wilcox, Shashikant Dugad, A. Narayanan, M. H.G. Souza, P. Yepes, Victor Daniel Elvira, M. Sosebee, C. Shaffer, D. Cullen-Vidal, K. Genser, R. J. Madaras, P. Bloom, N. N. Biswas, H. E. Montgomery, J. A. Wightman, J. Alitti, N. I. Bojko, S. Chopra, J. Bantly, D. Stewart, S. N. Gurzhiev, F. Wen, E. W. Anderson, H. L. Melanson, P. Z. Quintas, L. T. Kerth, Andrew Brandt, M. L. Stevenson, R. Engelmann, Liu Chen, J. M. Guida, D. Hedin, Quing Zhu, J. S. Hoftun, J. N. Butler, H.E. Miettinen, P. D. Grannis, H. Piekarz, D. P. Stoker, Allen Mincer, V. A. Bezzubov, J. P. Negret, Y. Fisyak, J. H. Christenson, R. P. Smith, Michael Shupe, Harrison Prosper, T. Huehn, D. Fein, Erich Varnes, J. M. De Miranda, N. Grossman, Jing Li, G. E. Forden, A. P. Heinson, R. E. Hall, J. L. González Solís, N. Amos, J. Yang, V. M. Podstavkov, M. Fortner, J. Perkins, J. Borders, J. Z.Y. Jiang, L. T. Goss, E. A. Kozlovski, H. Haggerty, S. Lökös, A. L. Lyon, Shuichi Kunori, G. Finocchiaro, N. Denisenko, S. Reucroft, and C. Yoshikawa

Subjects
Physics, Particle physics, Luminosity (scattering theory), Calorimeter (particle physics), Meson, Physics::Instrumentation and Detectors, Tevatron, General Physics and Astronomy, law.invention, Nuclear physics, law, Pseudorapidity, High Energy Physics::Experiment, Rapidity, Fermilab, Nuclear Experiment, Collider
Abstract

A measurement of the cross section for production of single, isolated photons is reported for transverse energies in the range of 10–125 GeV for two regions of pseudorapidity, |η| -1 of integrated luminosity accumulated in pp collisions at √s=1.8TeV and recorded with the D0 detector at the Fermilab Tevatron Collider. The background, predominantly from jets which fragment to neutral mesons, is estimated using the longitudinal shower shape in the calorimeter. In both pseudorapidity regions the cross section is found to agree with the next-to-leading order QCD prediction for 30≲E T γ ≲80GeV.

Published
1996

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

Author

N. I. Bojko, M. A. Shupe, J. S. Hoftun, J. N. Butler, P. D. Grannis, H. Piekarz, B. Baldin, Y. Ducros, J. B. Singh, Victor Daniel Elvira, S. Youssef, S. Choi, Robert J. McCarthy, A. Sanchez-Hernandez, D.R. Green, J. Balderston, Eunil Won, W. M. Smart, T. G. Trippe, J. M. Hauptman, L. A. Markosky, Robert Hirosky, C. Cretsinger, B. Gibbard, M. Strovink, S. H. Aronson, Shuichi Kunori, E. James, K. A. Johns, R. D. Schamberger, S. C. Loken, A. N. Galyaev, W. Y. Chen, Gilvan Alves, George R. Kalbfleisch, T. L. Taylor, Sharon Hagopian, C. T. Murphy, M. Bhattacharjee, J. Sculli, Nikos Varelas, T. Hu, A. K.A. Maciel, Heriberto Castilla-Valdez, Paolo Franzini, V. S. Narasimham, W. X. Gu, C. K. Jung, T. McKibben, K. S. Hahn, D. Cutts, M. V. S. Rao, D. Stewart, Sebastien Jonathan Kahn, S. N. Gurzhiev, T. Huehn, D. Fein, D. Chakraborty, A. A. Mayorov, W. E. Cooper, M. Nicola, Yu. Pischalnikov, S. Protopopescu, Greg Landsberg, R. K. Shivpuri, D. R. Claes, N. Denisenko, S. Reucroft, J. Drinkard, Don Lincoln, Erich Varnes, J. M. De Miranda, M. K. Fatyga, C. Yoshikawa, S. Lami, T. L. Geld, Sándor Lökös, J. Yang, J. Snow, M. Tartaglia, Kaushik De, S. M. Chang, S. P. Denisov, Jong-Sung Yu, Y. Fisyak, Quing Zhu, V. M. Podstavkov, M. Fortner, J. Featherly, V. Glebov, Marvin Johnson, M. R. Krishnaswamy, F. Hsieh, L. Magaña-Mendoza, A. R. Clark, A. L. Lyon, F. Borcherding, J. Perkins, A. Para, Peter Nemethy, Sergey Chekulaev, G. Eppley, H. da Motta, N.V. Mokhov, B. May, L. Lueking, B. G. Pope, N. Grossman, A. P. Heinson, J. Borders, Andrew White, J. G.R. Lima, A. S. Ito, A. V. Kozelov, R. E. Hall, J. L. González Solís, Joan A. Guida, I. Adam, J. Z.Y. Jiang, L. T. Goss, P. Grudberg, Y. E. Gutnikov, Stephen Wimpenny, S. Krzywdzinski, V. I. Kochetkov, Hiroaki Aihara, Raymond Brock, Boaz Klima, K. W. Merritt, J. F. Bartlett, Robert Kehoe, E. Oltman, A. Zylberstejn, J. Bendich, Jan M. Guida, M.K. Fatyga, J. Kourlas, H. Greenlee, J. Cochran, D. Nesic, M. Abolins, Elizaveta Shabalina, G. Di Loreto, P. M. Tuts, B. Gobbi, R.E. Avery, Yanwen Liu, P. Mooney, John Hobbs, E. A. Kozlovski, D. Norman, M. R. Adams, Robert Snihur, N. K. Mondal, H. T. Diehl, S. Willis, M. Pang, Young-Sang Yu, N. A. Roe, V. Oguri, M. L. Kelly, D. Denisov, T. Marshall, B. S. Acharya, C. L. Kim, C. Boswell, R. W. Stephens, S. A. Jerger, Sarah Catherine Eno, T.R. McMahon, M. Paterno, M. L. Stevenson, Darien Wood, G.E. Forden, A. Boehnlein, P. M. Sood, D. Pušeljić, Srinivasan Rajagopalan, Thomas Ferbel, G. Wang, Alberto Santoro, D. P. Stoker, P. Yamin, J. Warchol, S. Abachi, E. Flattum, Nicholas John Hadley, J. Ellison, H. Haggerty, P. Padley, H. Johnstad, S. R. Dugad, Jing Li, Matthew Jones, S. Mani, S. Fuess, A. D. Bross, Alexey Volkov, Vyacheslav Klyukhin, P.F. Ermolov, S. Blessing, R. Markeloff, Scott Snyder, Suman Bala Beri, R. Partridge, Howard Gordon, F. Nang, Richard B. Lipton, Ying Li, R. Madden, K. C. Frame, O. Ramirez, P. Rubinov, Cecilia Elena Gerber, Mitchell Wayne, H. Schellman, J. M. Kohli, L. T. Kerth, J. Wilcox, L. Rasmussen, V. S. Burtovoi, Peter W. Draper, S. Fahey, A. Baden, M. Mudan, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, G. C. Blazey, A. Leflat, S. Igarashi, P. R. G. Virador, Ulrich Heintz, Stefan Grünendahl, J. Thompson, R. Hernández-Montoya, R. Yamada, S. Feher, R. Astur, M. I. Martin, J. S. Kang, M. A.C. Cummings, R. J. Madaras, B. Hoeneisen, Lee Sawyer, Ting Hu, Q. Z. Li-Demarteau, B. Gómez, S. H. Ahn, Elizabeth Gallas, H. Jostlein, Z. H. Zhu, Jianming Qian, A. L. Spadafora, D. Buchholz, P. I. Goncharov, R. Hatcher, Orin I. Dahl, John Rutherfoord, A. Zieminski, M. Diesburg, P. Tamburello, N. Parua, Randy Ruchti, W. Guryn, D. Owen, Heng Xu, T. Heuring, P. A. Rapidis, A. Bischoff, J. Tarazi, J. A. Wightman, J. F. Glicenstein, A. V. Kostritskiy, Y. M. Park, A. M. Smith, S. Glenn, J. McKinley, D. A. Stoianova, G. Finocchiaro, Tong Hu, Gregory R Snow, Marc M Baarmand, James C. Green, Wagner Carvalho, S. Y. Jun, Sissel Hansen, H. D. Wahl, Gordon Watts, M. Demarteau, V. Sirotenko, S. Banerjee, P. Yepes, T. Joffe-Minor, O. V. Eroshin, H. Johari, V. Balamurali, M. H.G. Souza, C. Yanagisawa, Phillip Gutierrez, K. Bazizi, N. Amos, K. Genser, H. E. Montgomery, H. E. Fisk, T. Fahland, Rajendran Raja, D. Vititoe, A. Jonckheere, G. Guglielmo, J. Solomon, C. S. Mishra, A. P. Vorobiev, Stephan Linn, Gervasio Gomez, R. J. Genik, N. Oshima, E. W. Anderson, Brad Abbott, T. Yasuda, Daria Zieminska, J. F. Lebrat, Vasken Hagopian, H. Weerts, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, D. Edmunds, E. Neis, N. N. Biswas, B. I. Klochkov, Meenakshi Narain, A. Peryshkin, S. Chopra, Allen Mincer, Andre Sznajder, A. Narayanan, M. D. Peters, W. G. Cobau, M. Sosebee, Hui Li, L. Oesch, J. Alitti, J. Bantly, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, J. T. White, D. Hedin, V. A. Bezzubov, J. P. Negret, R. P. Smith, C. Klopfenstein, Harrison Prosper, J. Jaques, P. C. Bhat, F. Lobkowicz, T. Rockwell, Iain Alexander Bertram, J. Womersley, R. L. Dixon, Michael Rijssenbeek, G. Álvarez, V. N. Evdokimov, D. Casey, D.S. Koltick, J. Kotcher, J. T. Linnemann, E. G. Zverev, Brajesh C Choudhary, N. Graf, K. Streets, Vipin Bhatnagar, A. Klatchko, G. Griffin, M. Chung, C. H. Park, H. S. Mao, H. L. Melanson, P. Z. Quintas, S. K. Kim, H. A. Neal, J. H. Christenson, David H. Adams, H. C. Shankar, M. Goforth, and P. Bloom

Subjects
Physics, Particle physics, Physics::Medical Physics, Transverse momentum, General Physics and Astronomy, Production (computer science), Lambda, Coupling (probability), Boson
Abstract

We present results from a search for anomalous $\mathrm{WW}$ and $\mathrm{WZ}$ production in $p\overline{p}$ collisions at $\sqrt{s}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.8\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$. We used $p\overline{p}\ensuremath{\rightarrow}e\ensuremath{\nu}\mathrm{jjX}$ events observed during the 1992--1993 run of the Fermilab Tevatron collider, corresponding to an integrated luminosity of $13.7\ifmmode\pm\else\textpm\fi{}0.7{\mathrm{pb}}^{\ensuremath{-}1}$. A fit to the transverse momentum spectrum of the $W$ boson yields direct limits on the CP-conserving anomalous $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ coupling parameters of $\ensuremath{-}0.9l\ensuremath{\Delta}\ensuremath{\kappa}l1.1$ (with $\ensuremath{\lambda}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$) and $\ensuremath{-}0.6l\ensuremath{\lambda}l0.7$ (with $\ensuremath{\Delta}\ensuremath{\kappa}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$) at the 95% confidence level, for a form factor scale $\ensuremath{\Lambda}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1.5\phantom{\rule{0ex}{0ex}}\mathrm{TeV}$, assuming that the $\mathrm{WW}\ensuremath{\gamma}$ and $\mathrm{WWZ}$ coupling parameters are equal.

Published
1996

40. Studies of topological distributions of inclusive three- and four-jet events inp¯pcollisions ats=1800GeV with the D0 detector

Author

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

Subjects
Quantum chromodynamics, Physics, Quark, Nuclear and High Energy Physics, High Energy Physics::Phenomenology, Monte Carlo method, Tevatron, Jet (particle physics), Topology, law.invention, law, High Energy Physics::Experiment, Fermilab, Collider, Energy (signal processing)
Abstract

The global topologies of inclusive three- and four-jet events produced in $\overline{p}p$ interactions are described. The three- and four-jet events are selected from data recorded by the D0 detector at the Fermilab Tevatron Collider operating at a center-of-mass energy of $\sqrt{s}=1800$ GeV. The measured, normalized distributions of various topological variables are compared with parton-level predictions of tree-level QCD calculations. The parton-level QCD calculations are found to be in good agreement with the data. The studies also show that the topological distributions of the different subprocesses involving different numbers of quarks are very similar and reproduce the measured distributions well. The parton-shower Monte Carlo generators provide a less satisfactory description of the topologies of the three- and four-jet events.

Published
1996

41. Search for Right-HandedWBosons and HeavyW′inpp¯Collisions ats=1.8TeV

Author

S. Abachi, B. Abbott, M. Abolins, B. S. Acharya, I. Adam, D. L. Adams, M. Adams, S. Ahn, H. Aihara, J. Alitti, G. Álvarez, G. A. Alves, E. Amidi, N. Amos, E. W. Anderson, S. H. Aronson, R. Astur, R. E. Avery, A. Baden, V. Balamurali, J. Balderston, B. Baldin, J. Bantly, J. F. Bartlett, K. Bazizi, J. Bendich, S. B. Beri, I. Bertram, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Bhattacharjee, A. Bischoff, N. Biswas, G. Blazey, S. Blessing, P. Bloom, A. Boehnlein, N. I. Bojko, F. Borcherding, J. Borders, C. Boswell, A. Brandt, R. Brock, A. Bross, D. Buchholz, V. S. Burtovoi, J. M. Butler, W. Carvalho, D. Casey, H. Castilla-Valdez, D. Chakraborty, S.-M. Chang, S. V. Chekulaev, L.-P. Chen, W. Chen, S. Chopra, B. C. Choudhary, J. H. Christenson, M. Chung, D. Claes, A. R. Clark, W. G. Cobau, J. Cochran, W. E. Cooper, C. Cretsinger, D. Cullen-Vidal, M. A. C. Cummings, D. Cutts, O. I. Dahl, K. De, M. Demarteau, R. Demina, K. Denisenko, N. Denisenko, D. Denisov, S. P. Denisov, H. T. Diehl, M. Diesburg, G. Di Loreto, R. Dixon, P. Draper, J. Drinkard, Y. Ducros, S. R. Dugad, S. Durston-Johnson, D. Edmunds, J. Ellison, V. D. Elvira, R. Engelmann, S. Eno, G. Eppley, P. Ermolov, O. V. Eroshin, V. N. Evdokimov, S. Fahey, T. Fahland, M. Fatyga, M. K. Fatyga, J. Featherly, S. Feher, D. Fein, T. Ferbel, G. Finocchiaro, H. E. Fisk, Y. Fisyak, E. Flattum, G. E. Forden, M. Fortner, K. C. Frame, P. Franzini, S. Fuess, E. Gallas, A. N. Galyaev, T. L. Geld, R. J. Genik II, K. Genser, C. E. Gerber, B. Gibbard, V. Glebov, S. Glenn, J. F. Glicenstein, B. Gobbi, M. Goforth, A. Goldschmidt, B. Gómez, P. I. Goncharov, J. L. González Solís, H. Gordon, L. T. Goss, N. Graf, P. D. Grannis, D. R. Green, J. Green, H. Greenlee, G. Griffin, N. Grossman, P. Grudberg, S. Grünendahl, W. X. Gu, G. Guglielmo, J. A. Guida, J. M. Guida, W. Guryn, S. N. Gurzhiev, P. Gutierrez, Y. E. Gutnikov, N. J. Hadley, H. Haggerty, S. Hagopian, V. Hagopian, K. S. Hahn, R. E. Hall, S. Hansen, R. Hatcher, J. M. Hauptman, D. Hedin, A. P. Heinson, U. Heintz, R. Hernández-Montoya, T. Heuring, R. Hirosky, J. D. Hobbs, B. Hoeneisen, J. S. Hoftun, F. Hsieh, Tao Hu, Ting Hu, Tong Hu, T. Huehn, S. Igarashi, A. S. Ito, E. James, J. Jaques, S. A. Jerger, J. Z.-Y. Jiang, T. Joffe-Minor, H. Johari, K. Johns, M. Johnson, H. Johnstad, A. Jonckheere, M. Jones, H. Jöstlein, S. Y. Jun, C. K. Jung, S. Kahn, G. Kalbfleisch, J. S. Kang, R. Kehoe, M. L. Kelly, L. Kerth, C. L. Kim, S. K. Kim, A. Klatchko, B. Klima, B. I. Klochkov, C. Klopfenstein, V. I. Klyukhin, V. I. Kochetkov, J. M. Kohli, D. Koltick, A. V. Kostritskiy, J. Kotcher, J. Kourlas, A. V. Kozelov, E. A. Kozlovski, M. R. Krishnaswamy, S. Krzywdzinski, S. Kunori, S. Lami, G. Landsberg, J-F. Lebrat, A. Leflat, H. Li, J. Li, Y. K. Li, Q. Z. Li-Demarteau, J. G. R. Lima, D. Lincoln, S. L. Linn, J. Linnemann, R. Lipton, Y. C. Liu, F. Lobkowicz, S. C. Loken, S. Lökös, L. Lueking, A. L. Lyon, A. K. A. Maciel, R. J. Madaras, R. Madden, S. Mani, H. S. Mao, S. Margulies, R. Markeloff, L. Markosky, T. Marshall, M. I. Martin, M. Marx, B. May, A. A. Mayorov, R. McCarthy, T. McKibben, J. McKinley, T. McMahon, H. L. Melanson, J. R. T. de Mello Neto, K. W. Merritt, H. Miettinen, A. Mincer, J. M. de Miranda, C. S. Mishra, M. Mohammadi-Baarmand, N. Mokhov, N. K. Mondal, H. E. Montgomery, P. Mooney, H. da Motta, M. Mudan, C. Murphy, C. T. Murphy, F. Nang, M. Narain, V. S. Narasimham, A. Narayanan, H. A. Neal, J. P. Negret, E. Neis, P. Nemethy, D. Nešić, M. Nicola, D. Norman, L. Oesch, V. Oguri, E. Oltman, N. Oshima, D. Owen, P. Padley, M. Pang, A. Para, C. H. Park, Y. M. Park, R. Partridge, N. Parua, M. Paterno, J. Perkins, A. Peryshkin, M. Peters, H. Piekarz, Y. Pischalnikov, V. M. Podstavkov, B. G. Pope, H. B. Prosper, S. Protopopescu, D. Pušeljić, J. Qian, P. Z. Quintas, R. Raja, S. Rajagopalan, O. Ramirez, M. V. S. Rao, P. A. Rapidis, L. Rasmussen, A. L. Read, S. Reucroft, M. Rijssenbeek, T. Rockwell, N. A. Roe, P. Rubinov, R. Ruchti, J. Rutherfoord, A. Santoro, L. Sawyer, R. D. Schamberger, H. Schellman, J. Sculli, E. Shabalina, C. Shaffer, H. C. Shankar, Y. Y. Shao, R. K. Shivpuri, M. Shupe, J. B. Singh, V. Sirotenko, W. Smart, A. Smith, R. P. Smith, R. Snihur, G. R. Snow, S. Snyder, J. Solomon, P. M. Sood, M. Sosebee, M. Souza, A. L. Spadafora, R. W. Stephens, M. L. Stevenson, D. Stewart, D. A. Stoianova, D. Stoker, K. Streets, M. Strovink, A. Sznajder, A. Taketani, P. Tamburello, J. Tarazi, M. Tartaglia, T. L. Taylor, J. Thompson, T. G. Trippe, P. M. Tuts, N. Varelas, E. W. Varnes, P. R. G. Virador, D. Vititoe, A. A. Volkov, A. P. Vorobiev, H. D. Wahl, G. Wang, J. Warchol, G. Watts, M. Wayne, H. Weerts, F. Wen, A. White, J. T. White, J. A. Wightman, J. Wilcox, S. Willis, S. J. Wimpenny, J. V. D. Wirjawan, J. Womersley, E. Won, D. R. Wood, H. Xu, R. Yamada, P. Yamin, C. Yanagisawa, J. Yang, T. Yasuda, C. Yoshikawa, S. Youssef, J. Yu, Y. Yu, D. H. Zhang, Q. Zhu, Z. H. Zhu, D. Zieminska, A. Zieminski, E. G. Zverev, and A. Zylberstejn

Subjects
Physics, Particle physics, Right handed, Tevatron, General Physics and Astronomy, Electron, Lower limit, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Fermilab, Neutrino, Collider, Boson
Abstract

We report on a search for right-handed W bosons (W R ) with mass greater than 200GeV/c 2 . We used data collected with the D0 detector at the Fermilab Tevatron pp collider at √s=1.8TeV to search for W R decays into an electron and a massive right-handed neutrino W R ± >e ± N R . Using the inclusive electron data, we set mass limits independent of the N R decay: m W R >650GeV/c 2 and m W R >720GeV/c 2 at the 95% confidence level, valid for m N R W R and mN R «m W R , respectively. The latter also represents a new lower limit on the mass of a heavy left-handed W boson (W') decaying into ev. In addition, limits on mWR valid for larger values of the N R mass are obtained assuming that NR decays to an electron and two jets.

Published
1996

42. Search forW̃1Z̃2Production via Trilepton Final States inpp¯Collisions ats=1.8TeV

Author

D. Buchholz, M. Marx, P. Tamburello, T. Huehn, Heng Xu, A. Baden, R. K. Shivpuri, J. A. Wightman, A. M. Smith, G. C. Blazey, N. Grossman, D. R. Claes, R. Yamada, P. Bloom, D. Fein, Gregory R Snow, D. Chakraborty, C. Cretsinger, J. Drinkard, M. Strovink, E. James, M. Bhattacharjee, S. H. Ahn, M. Tartaglia, N. Amos, K. Genser, N. I. Bojko, Orin I. Dahl, John Rutherfoord, J. Borders, S. Margulies, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, Rajendran Raja, C. Murphy, P.F. Ermolov, Kaushik De, J. Jaques, G. Eppley, E. Amidi, Matthew Jones, J. V.D. Wirjawan, N. N. Biswas, Dongliang Zhang, J. Z.Y. Jiang, J. R. T. de Mello Neto, Don Lincoln, D. Edmunds, E. Neis, L. T. Goss, S. Chopra, C. T. Murphy, S. M. Chang, Robert Hirosky, A. Bischoff, Erich Varnes, J. F. Glicenstein, A. V. Kostritskiy, Sissel Hansen, Brad Abbott, J. M. De Miranda, V. S. Burtovoi, R. Astur, M. Abolins, R. J. Madaras, D. Pušeljić, E. Flattum, Raymond Brock, H. da Motta, G. Finocchiaro, J. G.R. Lima, James C. Green, K. S. Hahn, D. Cutts, S. Protopopescu, E. A. Kozlovski, Greg Landsberg, S. Lami, T. L. Geld, J. Womersley, Boaz Klima, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, D. Nesic, A. S. Ito, Stephen Wimpenny, Andre Sznajder, R. Demina, W. Y. Chen, W. G. Cobau, Ulrich Heintz, J. T. White, H. D. Wahl, M. H.G. Souza, P. Mooney, Gilvan Alves, J. Cochran, M. Sosebee, S. Fahey, V. Oguri, M. A. Shupe, F. Borcherding, T. Marshall, M. D. Peters, H. E. Montgomery, K. Bazizi, D. Norman, Hui Li, S. A. Jerger, N. Parua, Randy Ruchti, C. Klopfenstein, T.R. McMahon, M. Paterno, M. L. Stevenson, Darien Wood, Cecilia Elena Gerber, M. Diesburg, S. Durston-Johnson, E. Oltman, Sándor Lökös, Nicholas John Hadley, George R. Kalbfleisch, D. Owen, S. Willis, M. Pang, J. Yang, J. Alitti, G. Guglielmo, J. Warchol, S. Blessing, Paolo Franzini, J. Tarazi, J. Bantly, Jing Li, N. Denisenko, Sarah Catherine Eno, H. L. Melanson, P. Z. Quintas, J. M. Hauptman, Scott Snyder, J. S. Hoftun, J. N. Butler, B. May, S. Reucroft, V. S. Narasimham, V. M. Podstavkov, L. Oesch, N. K. Mondal, Elizabeth Gallas, L. A. Markosky, H. Jostlein, Vyacheslav Klyukhin, W. X. Gu, H. T. Diehl, A. N. Galyaev, R. Hatcher, M. Fortner, C. Yoshikawa, F. Nang, M. Nicola, P. D. Grannis, H. Piekarz, Richard B. Lipton, Ying Li, S. Krzywdzinski, T. Yasuda, B. Gobbi, J. Perkins, S. K. Kim, Yu. Pischalnikov, V. I. Kochetkov, T. L. Taylor, F. Wen, E. W. Anderson, Andrew White, W. M. Smart, A. A. Mayorov, Jianming Qian, J. Wilcox, V. Sirotenko, K. Denisenko, J. H. Christenson, D. Stewart, Brajesh C Choudhary, M. Demarteau, A. Zylberstejn, Sebastien Jonathan Kahn, S. N. Gurzhiev, A. Boehnlein, O. V. Eroshin, Jan M. Guida, P. M. Sood, David H. Adams, B. Gibbard, M. K. Fatyga, T. G. Trippe, G.E. Forden, Phillip Gutierrez, H. Greenlee, Andrew Brandt, R. Engelmann, H. Johnstad, S. Feher, Heriberto Castilla-Valdez, P. Grudberg, Y. E. Gutnikov, Liu Chen, T. Fahland, W. E. Cooper, A. D. Bross, T. Heuring, R. D. Schamberger, S. C. Loken, Ting Hu, J. Kourlas, J. Sculli, R.E. Avery, Sharon Hagopian, H.E. Miettinen, S. Glenn, J. McKinley, A. Zieminski, Peter Nemethy, J. Ellison, Nikos Varelas, T. Hu, A. K.A. Maciel, D. A. Stoianova, Wagner Carvalho, Allen Mincer, John Hobbs, Quing Zhu, L. Lueking, C. S. Mishra, A. Klatchko, P. A. Rapidis, M. R. Adams, Young-Sang Yu, S. Fuess, M. Mohammadi-Baarmand, S. H. Aronson, Shuichi Kunori, K. A. Johns, P. Padley, N. A. Roe, S. Rusin, B. Baldin, N.V. Mokhov, Vasken Hagopian, Jong-Sung Yu, Alexey Volkov, M. Chung, S. Y. Jun, Alexander Lincoln Read, D. Vititoe, Joan A. Guida, R. Hernández-Montoya, R. J. Genik, A. P. Heinson, H. Weerts, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, G. Di Loreto, R. E. Hall, J. L. González Solís, Hiroaki Aihara, B. Gómez, Z. H. Zhu, Y. Ducros, D. Denisov, C. Boswell, S. Abachi, P. M. Tuts, Meenakshi Narain, Srinivasan Rajagopalan, Thomas Ferbel, A. Peryshkin, R. Partridge, Suman Bala Beri, H. A. Neal, H. C. Shankar, A. Narayanan, M. Goforth, J. B. Singh, Tong Hu, A. L. Spadafora, M.K. Fatyga, P. I. Goncharov, W. Guryn, B. S. Acharya, C. L. Kim, G. Álvarez, D. Hedin, Victor Daniel Elvira, D. Casey, S. Youssef, Robert J. McCarthy, J. Kotcher, D.R. Green, J. Balderston, T. Joffe-Minor, P. C. Bhat, F. Lobkowicz, C. Yanagisawa, Eunil Won, N. Graf, H. E. Fisk, T. Rockwell, Iain Alexander Bertram, R. L. Dixon, K. Streets, Vipin Bhatnagar, Michael Rijssenbeek, J. Solomon, G. Griffin, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, B. I. Klochkov, C. K. Jung, V. A. Bezzubov, T. McKibben, M. V. S. Rao, J. P. Negret, R. P. Smith, C. H. Park, H. S. Mao, Y. Y. Shao, Harrison Prosper, J. Bendich, B. G. Pope, G. Wang, Alberto Santoro, H. Haggerty, Y. Fisyak, J. Featherly, V. Glebov, Marvin Johnson, A. L. Lyon, A. V. Kozelov, P. Rubinov, R. W. Stephens, D. P. Stoker, M. Mudan, Elizaveta Shabalina, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, A. Taketani, Y. M. Park, A. Leflat, M. I. Martin, J. S. Kang, P. Yamin, H. Johari, V. Balamurali, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, A. Kernan, A. Jonckheere, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, J. F. Lebrat, I. Adam, K. W. Merritt, J. F. Bartlett, Robert Kehoe, Yanwen Liu, Robert Snihur, M. L. Kelly, S. R. Dugad, R. Markeloff, Howard Gordon, K. C. Frame, O. Ramirez, L. T. Kerth, S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, and Sergey Chekulaev

Subjects
Physics, Particle physics, Pair production, Chargino, Luminosity (scattering theory), law, Neutralino, Tevatron, General Physics and Astronomy, Fermilab, Collider, law.invention, Minimal Supersymmetric Standard Model
Abstract

We have searched for associated production of the lightest chargino W 1 and next-to-lightest neutralino Z 2 of the minimal supersymmetric standard model in pp collisions at √s=1.8 TeV using the D0 detector at the Fermilab Tevatron collider. Data corresponding to an integrated luminosity of 12.5±0.7pb -1 were examined for events containing three isolated leptons. No evidence for W 1 Z 2 pair production was found. Limits on s(W 1 Z 2 )B(W 1 →lνZ 1 )B(Z 2 →llZ 1 ) are presented.

Published
1996

43. Search for Light Top Squarks inpp¯Collisions at√s=1.8TeV

Author

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

Subjects
Physics, Particle physics, Top quark, Branching fraction, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, law.invention, Charm quark, Standard Model, Nuclear physics, law, Neutralino, High Energy Physics::Experiment, Fermilab, Collider
Abstract

We present a search for pair produced top squarks, the supersymmetric partners of the top quark, using the D0 detector at the Fermilab Tevatron pp collider. We consider a scenario in which the lighter of the two top squarks t 1 decays with 100% branching fraction to a charm quark and the lightest neutralino χ 1 0 yielding a signal of two acollinear jets with missing transverse energy. We observe 3 events while we expect 3.5±1.2 events from the known standard model processes. We exclude at the 95% confidence level a significant region of the m t 1 - m χ 1 0 parameter space. The highest m t 1 value we exclude is 93 GeV/c 2 with a corresponding m χ 1 0 value of 8 GeV/c 2 .

Published
1996

44. production in p collisions at = 1.8

Author

T. Fahland, J. Wilcox, D. Casey, H. Tong, Rajendran Raja, S. Margulies, Brad Abbott, J. Jaques, K. S. Hahn, D. Cutts, A. Zieminski, P.F. Ermolov, J. M. Hauptman, Greg Landsberg, S. Y. Jun, A. N. Galyaev, F. Wen, E. W. Anderson, M. Sosebee, M. Nicola, Ron Lipton, J. Womersley, B. Baldin, Y. Ducros, S. C. Loken, V. S. Burtovoi, M. Bhattacharjee, T. L. Geld, Natalie A. Roe, C. T. Murphy, M. Paterno, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, S. Lami, Allen Mincer, T. G. Trippe, Nikolai Mokhov, B. May, W. E. Cooper, L. P. Chen, A. Baden, S. Fuess, Daniel R Claes, Jianming Qian, J. Alitti, J. Bantly, R. Hirosky, G. C. Blazey, W. Y. Chen, S. Krzywdzinski, T. McKibben, M. V. S. Rao, N. N. Biswas, B. Gibbard, R. L. McCarthy, S. Feher, Andrew White, S. Glenn, J. McKinley, D. A. Stoianova, R. Yamada, I. Bertram, Sharon Hagopian, George R. Kalbfleisch, J. Bendich, Paolo Franzini, J. Featherly, V. S. Narasimham, V. Glebov, Alexander Vorobiev, G. Finocchiaro, S. H. Ahn, Wagner Carvalho, A. Bischoff, J. Sculli, J. F. Glicenstein, A. V. Kostritskiy, R. J. Madaras, T. McMahon, Y. E. Gutnikov, T. L. Taylor, A. K.A. Maciel, F. Lobkowicz, S. Chopra, John Rutherfoord, Brajesh C Choudhary, J. Kourlas, E. Oltman, Sissel Hansen, A. A. Mayorov, P. A. Rapidis, Heriberto Castilla-Valdez, Marvin Johnson, M. K. Fatyga, A. V. Kozelov, F. Nang, V. I. Kochetkov, Andrew Brandt, R. Engelmann, Mary Beth Adams, N. Amos, John Hobbs, J. Borders, Bobby Samir Acharya, H.E. Miettinen, P. Bloom, J. A. Wightman, S. Durston-Johnson, M. H.G. Souza, H. A. Neal, Young-Sang Yu, H. C. Shankar, B. Gobbi, J. T. Linnemann, A. Jonckheere, C. Klopfenstein, T. Rockwell, J. Drinkard, Raymond Brock, Boaz Klima, N. I. Bojko, Peter Nemethy, Dongliang Zhang, D. Vititoe, H. E. Montgomery, James C. Green, M. Tartaglia, Stephan Linn, N. Denisenko, A. Zylberstejn, J. Z.Y. Jiang, G. Eppley, M. Goforth, Y. Pischalnikov, Ulrich Heintz, W. X. Gu, D. Norman, Kaushik De, M. Mohammadi-Baarmand, S. Reucroft, R. L. Dixon, Michael Rijssenbeek, Jasvinder A. Singh, F. Borcherding, Gordon Watts, H. Jöstlein, J. Yu, S. Willis, M. Pang, R. J. Genik, C. Cretsinger, H. da Motta, J. G.R. Lima, S. H. Aronson, V. Sirotenko, N. Oshima, M. Strovink, D. P. Stoker, E. G. Zverev, H. Greenlee, T. Joffe-Minor, L. T. Goss, R. Snihur, N. Varelas, H. Johnstad, P. Padley, Alexey Volkov, Daria Zieminska, E. James, M. Diesburg, R. D. Schamberger, D. Buchholz, D. Nešić, H. Tao, James H Cochran, C. Yanagisawa, A. S. Ito, A. Klatchko, O. V. Eroshin, C. L. Kim, Hiroaki Aihara, Mitchell Wayne, H. Schellman, J. M. Kohli, S. M. Chang, A. Smith, Stephen Wimpenny, Haifeng Li, J. F. Lebrat, C. Boswell, H. E. Fisk, P. Tamburello, Heng Xu, J. S. Hoftun, J. N. Butler, P. D. Grannis, P. M. Tuts, D. Owen, T. Marshall, H. Ting, A. Bross, Phillip Gutierrez, E. A. Kozlovski, H. Piekarz, R. W. Stephens, Darien Wood, Sarah Catherine Eno, C. Murphy, Meenakshi Narain, Gilvan Alves, A. Peryshkin, R. Astur, Pushpalatha C Bhat, M. Mudan, Gregory R Snow, J. Tarazi, V. N. Evdokimov, V. D. Elvira, T. Heuring, S. Abachi, H. Haggerty, J. Thompson, B. Gómez, Z. H. Zhu, D.S. Koltick, Nicholas John Hadley, Shashikant Dugad, S. A. Jerger, R. Hernández-Montoya, C. Yoshikawa, T. Yasuda, S. Lökös, Serban Protopopescu, S. Blessing, A. Leflat, K. Denisenko, Scott Snyder, S. Youssef, R. Markeloff, A. Narayanan, M. Chung, Vyacheslav Klyukhin, Dhiman Chakraborty, Robert Kehoe, M. A.C. Cummings, B. Hoeneisen, J. Yang, R. Demina, Suman Bala Beri, A. L. Lyon, Shuichi Kunori, Ying Li, J. Balderston, Lee Sawyer, N. Parua, B. I. Klochkov, G. E. Forden, A. P. Heinson, H. S. Mao, R. E. Hall, J. L. González Solís, V. M. Podstavkov, M. Fortner, J. Perkins, J. M. Guida, M. D. Marx, H. D. Wahl, Matthew Jones, S. Igarashi, Q. Z. Li-Demarteau, D. Lincoln, Eunil Won, A. L. Read, D. Edmunds, E. Neis, Andre Sznajder, G. Wang, Alberto Santoro, Seong Keun Kim, A. Taketani, Y. M. Park, S.A. Kahn, M. Demarteau, R. E. Avery, M. D. Peters, W. G. Cobau, M. I. Martin, J. S. Kang, L. Oesch, P. Yamin, J. Solomon, S. Mani, T. Huehn, H. Johari, D. Hedin, V. Balamurali, B. G. Pope, D. Fein, Erich Varnes, R. Madden, J. M. De Miranda, L. Rasmussen, Randy Ruchti, Elizaveta Shabalina, Peter W. Draper, N. Grossman, V. A. Bezzubov, J. P. Negret, J. T. White, Jing Li, R. P. Smith, C. S. Mishra, Michael Shupe, Y. Y. Shao, G. Guglielmo, M.K. Fatyga, Harrison Prosper, L. Markosky, Joan A. Guida, G. Di Loreto, D. Denisov, G. Álvarez, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, J. Kotcher, O. I. Dahl, N. Graf, H. L. Melanson, P. Z. Quintas, D. Stewart, S. N. Gurzhiev, Y. Fisyak, J. H. Christenson, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, Quing Zhu, I. Adam, P. Rubinov, K. W. Merritt, G. Griffin, J. F. Bartlett, C. H. Park, Yanwen Liu, D. L. Adams, L. Lueking, S. Fahey, K. Bazizi, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, L. T. Kerth, S. P. Denisov, P. Grudberg, V. Oguri, M. L. Stevenson, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, S. Grünendahl, J. Warchol, A. Para, Sergey Chekulaev, C. K. Jung, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, M. Abolins, P. Mooney, Elizabeth Gallas, N. K. Mondal, H. T. Diehl, R. Hatcher, A. Boehnlein, P. M. Sood, J. Ellison, A. L. Spadafora, P. I. Goncharov, W. Guryn, R. K. Shivpuri, D. Pušeljić, W. Smart, K. A. Johns, Vasken Hagopian, H. Weerts, C. E. Gerber, and P. R.G. Virador

Subjects
Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Tevatron, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear physics, Transverse momentum, High Energy Physics::Experiment, Production (computer science), B meson, Impact parameter, Nuclear Experiment
Abstract

We have studied J ψ production in p p collisions at s = 1.8 TeV with the DO detector at Fermilab using μ+μ− data. We have measured the inclusive J ψ production cross section as a function of J ψ transverse momentum, pT. For the kinematic range pT > 8 GeV/c and |η| σ(p p → J ψ + X) · Br ( J ψ → μ + μ − ) = 2.08 ± 0.17( stat) ± 0.46(syst) nb. Using the muon impact parameter we have estimated the fraction of J ψ mesons coming from B meson decays to be fb = 0.35 ± 0.09(stat)±0.10(syst) and inferred the inclusive b production cross section. From the information on the event topology the fraction of nonisolated J ψ events has been measured to be fnonisol = 0.64 ± 0.08(stat)±0.06(syst). We have also obtained the fraction of J ψ events resulting from radiative decays of χc states, fχ = 0.32 ± 0.07(stat)±0.07(syst). We discuss the implications of our measurements for charmonium production processes.

Published
1996

45. Jet Production via Strongly Interacting Color-Singlet Exchange inpp¯Collisions

Author

S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, A. L. Read, C. Boswell, D. Edmunds, S. Abachi, E. Neis, Suman Bala Beri, Andre Sznajder, M. D. Peters, L. Oesch, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, C. Klopfenstein, J. Solomon, B. I. Klochkov, J. M. Hauptman, Cecilia Elena Gerber, Jianming Qian, Tong Hu, I. V. Mandrichenko, P. A. Rapidis, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Bischoff, A. V. Kostritskiy, J. Bendich, A. Kernan, A. Jonckheere, Sissel Hansen, C. K. Jung, V. Oguri, R. Hernández-Montoya, Stephan Linn, A. Milder, N. N. Biswas, F. Nang, C. S. Mishra, G. Wang, Alberto Santoro, C. Murphy, N. Oshima, G. Guglielmo, Daria Zieminska, Sharon Hagopian, W. Y. Chen, R. D. Schamberger, A. Smith, J. F. Lebrat, S. Protopopescu, A. K.A. Maciel, Vasken Hagopian, H. Weerts, George R. Kalbfleisch, P. Padley, D. Casey, Alexey Volkov, James H Cochran, Paolo Franzini, P. I. Goncharov, V. S. Narasimham, Thomas G Trippe, W. X. Gu, R. K. Shivpuri, S. Krzywdzinski, W. Guryn, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, P. Yamin, A. A. Mayorov, V. I. Kochetkov, S. Fuess, R. Snihur, B. Gómez, Z. H. Zhu, M. Abolins, Shashikant Dugad, N. Varelas, M. K. Fatyga, S. Mani, J. Drinkard, Rajendran Raja, M. Tartaglia, P. Mooney, M. Nicola, A. Zylberstejn, H. Greenlee, R. Demina, S. M. Chang, R. Madden, S. C. Loken, E. Amidi, N. K. Mondal, H. T. Diehl, L. Rasmussen, Peter W. Draper, A. Boehnlein, P. M. Sood, Sun Kee Kim, Brad Abbott, A. Bross, M. Bhattacharjee, V. Sirotenko, Kaushik De, Pushpalatha C Bhat, M. Mudan, J. V.D. Wirjawan, J. R. T. de Mello Neto, J. Ellison, F. Wen, E. W. Anderson, B. May, O. V. Eroshin, Phillip Gutierrez, J. Yu, R. L. McCarthy, B. Hoeneisen, Lee Sawyer, Allan G Clark, S. H. Aronson, P. Bloom, J. A. Wightman, S. Fahey, R. Hirosky, Matthew Jones, Allen Mincer, A. Taketani, N. Parua, Ting Hu, T. Huehn, B. Gobbi, N. I. Bojko, J. M. Guida, M.K. Fatyga, C. L. Kim, D. Fein, Y. M. Park, Dhiman Chakraborty, S.A. Kahn, Hiroaki Aihara, Elizabeth Gallas, R. Hatcher, H. L. Melanson, P. Z. Quintas, A. Zieminski, K. S. Hahn, M. Demarteau, R. E. Avery, D. Cutts, J. S. Kang, Erich Varnes, P. M. Tuts, R. W. Stephens, Greg Landsberg, Peter Nemethy, G. Eppley, J. M. De Miranda, S. Rusin, Y. Fisyak, J. H. Christenson, B. Gibbard, T. L. Taylor, V. A. Bezzubov, L. T. Kerth, S. Igarashi, T. L. Geld, J. P. Negret, R. P. Smith, M. L. Stevenson, L. Markosky, Joan A. Guida, Soon Yung Jun, N. Grossman, J. G.R. Lima, J. Sculli, Michael Shupe, M. Paterno, Jasvinder A. Singh, Y. Pischalnikov, Ulrich Heintz, G. Di Loreto, H. Jöstlein, P. R. G. Virador, Q. Z. Li-Demarteau, Y. Y. Shao, T. Hu, F. Borcherding, A. S. Ito, A. Goldschmidt, W. Smart, K. A. Johns, J. S. Hoftun, J. N. Butler, M. Diesburg, H. Johnstad, Laurent Chevalier, K. Streets, Vipin Bhatnagar, M. H.G. Souza, D. Owen, Stephen Wimpenny, M. A. C. Cummings, E. Oltman, T. Yasuda, R. Partridge, Harrison Prosper, D. Denisov, T. McKibben, J. Teiger, Randy Ruchti, E. Flattum, P. D. Grannis, H. Piekarz, J. Tarazi, Heriberto Castilla-Valdez, T. Marshall, G. Griffin, H. E. Montgomery, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, M. V. S. Rao, Sarah Catherine Eno, G. E. Forden, A. P. Heinson, Darien Wood, C. H. Park, Nicholas John Hadley, H. S. Mao, Vyacheslav Klyukhin, D. L. Adams, Alexander Vorobiev, Ying Li, S. Blessing, Scott Snyder, R. Markeloff, N. Amos, R. E. Hall, D. Stewart, S. N. Gurzhiev, J. L. González Solís, A. Baden, G. C. Blazey, D. P. Stoker, R. Astur, M. D. Marx, R. J. Madaras, S. Margulies, T. Fahland, R. Yamada, J. Li, S. Lami, S. H. Ahn, A. Pluquet, H. D. Wahl, P.F. Ermolov, J. Wilcox, T. Heuring, Orin I. Dahl, John Rutherfoord, G. Álvarez, B. Baldin, Mary Beth Adams, D. Hedin, V. S. Burtovoi, Quing Zhu, Y. Ducros, J. Kotcher, I. Bertram, James C. Green, N. Graf, Bruno Mansoulie, F. Lobkowicz, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, D. Buchholz, P. Tamburello, V. N. Evdokimov, J. Warchol, D.S. Koltick, Heng Xu, J. T. Linnemann, Gregory R Snow, B. G. Pope, Victor Daniel Elvira, S. Youssef, Elizaveta Shabalina, Robert Kehoe, J. Balderston, D. Lincoln, Eunil Won, J. T. White, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, Ph. Mangeot, Raymond Brock, Boaz Klima, H. Johari, V. Balamurali, D. Norman, S. Willis, M. Pang, A. N. Galyaev, W. E. Cooper, Daniel R Claes, N. A. Roe, S. Chopra, M. Chung, K. Denisenko, A. L. Lyon, Shuichi Kunori, J. Jaques, Ron Lipton, J. Womersley, J. Featherly, Nikolai Mokhov, V. Glebov, Marvin Johnson, S. Feher, A. V. Kozelov, Brajesh C Choudhary, Bobby Samir Acharya, H. A. Neal, C. T. Murphy, H. C. Shankar, M. Goforth, G. Finocchiaro, C. Cretsinger, S. Durston-Johnson, M. Strovink, E. James, A. Klatchko, N. Denisenko, S. Reucroft, C. Yoshikawa, Gilvan Alves, Andrew White, P. Grudberg, T. McMahon, Y. E. Gutnikov, J. Kourlas, John Hobbs, Young-Sang Yu, D. Pušeljić, S. P. Denisov, M. R. Krishnaswamy, M. Mohammadi-Baarmand, F. Hsieh, S. Grünendahl, D. Nešić, A. Para, Sergey Chekulaev, Haifeng Li, I. Adam, P. Rubinov, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, L. Lueking, Meenakshi Narain, A. Peryshkin, K. Bazizi, A. Narayanan, M. L. Kelly, M. Sosebee, Howard Gordon, K. C. Frame, O. Ramirez, J. Alitti, J. Bantly, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, J. Yang, V. M. Podstavkov, M. Fortner, J. Perkins, J. Borders, Dongliang Zhang, J. Z.Y. Jiang, L. T. Goss, E. A. Kozlovski, H. Haggerty, and S. Lökös

Subjects
Quantum chromodynamics, Physics, Particle physics, High Energy Physics::Phenomenology, Electroweak interaction, Tevatron, General Physics and Astronomy, Multiplicity (mathematics), Jet (particle physics), law.invention, Nuclear physics, law, High Energy Physics::Experiment, Production (computer science), Rapidity, Collider
Abstract

A study of the particle multiplicity between jets with large rapidity separation has been performed using the D\O\ detector at the Fermilab Tevatron $p\bar{p}$ Collider operating at $\sqrt{s}=1.8$\,TeV. A significant excess of low-multiplicity events is observed above the expectation for color-exchange processes. The measured fractional excess is $1.07 \pm 0.10({\rm stat})~{ + 0.25}_{- 0.13}({\rm syst})\%$, which is consistent with a strongly-interacting color-singlet (colorless) exchange process and cannot be explained by electroweak exchange alone. A lower limit of $0.80\%$ (95\% C.L.) is obtained on the fraction of dijet events with color-singlet exchange, independent of the rapidity gap survival probability.

Published
1996

46. Second Generation Leptoquark Search inpp¯Collisions ats=1.8TeV

Author

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

Subjects
Quark, Physics, Particle physics, Physics::Instrumentation and Detectors, Branching fraction, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, Particle identification, Nuclear physics, High Energy Physics::Experiment, Leptoquark, Fermilab, Neutrino, Lepton
Abstract

We report on a search for second generation scalar leptoquarks with the D0 detector at the Fermilab Tevatron pp collider at √s = 1.8 TeV. This search is based on 12.7 pb-1 of data. Second generation leptoquarks are assumed to be produced in pairs and to decay into a neutrino and quark with branching ratio β or into a neutrino and quark with branching ratio 1 - β. We obtain cross section times branching ratio limits as a function of leptoquark mass and set lower limits on the leptoquark mass at the 95% confidence level.

Published
1995

47. Study of the Strong Coupling Constant UsingW+JetProcesses

Author

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

Subjects
Physics, Quantum chromodynamics, Coupling constant, Particle physics, Computer Science::Information Retrieval, Hadron, Tevatron, General Physics and Astronomy, Order (ring theory), Parton, Jet (particle physics), Coupling (probability), Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract

The ratio of the number of {ital W}+1 jet to {ital W}+0 jet events is measured with the D0 detector using data from the 1992--93 Tevatron Collider run. For the {ital W}{r_arrow}{ital e}{nu} channel with a minimum jet {ital E}{sub {ital T}} cutoff of 25 GeV, the experimental ratio is 0.065{plus_minus}0.003(stat){plus_minus}0.007(syst). Next-to-leading order QCD predictions for various parton distributions agree well with each other and are all over 1 standard deviation below the measurement. Varying the strong coupling constant {alpha}{sub {ital s}} in both the parton distributions and the partonic cross sections simultaneously does not remove this discrepancy. {copyright} {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.

Published
1995

48. Transverse energy distributions within jets in p collisions at =1.8

Author

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

Subjects
Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Parton, Renormalization, Nuclear physics, Transverse plane, High Energy Physics::Experiment, Rapidity, Fermilab, Nuclear Experiment, Energy (signal processing)
Abstract

The distribution of the transverse energy in jets has been measured in p p collisions at s =1.8 TeV TeV using the DO detector at Fermilab. This measurement of the jet shape is made as a function of jet transverse energy in both the central and forward rapidity regions. Jets are shown to narrow both with increasing transverse energy and with increasing rapidity. Next-to-leading order partonic QCD calculations are compared to the data. Although the calculations qualitatively describe the data, they are shown to be very dependent on renormalization scale, parton clustering algorithm, and jet direction definition and they fail to describe the data in all regions consistently.

Published
1995

49. Search for heavy W bosons in 1.8 TeV p collisions

Author

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

Subjects
Physics, Quark, Nuclear and High Energy Physics, Particle physics, Gauge boson, Branching fraction, High Energy Physics::Phenomenology, Tevatron, Standard Model, Nuclear physics, High Energy Physics::Experiment, Neutrino, Lepton, Boson
Abstract

A search for a heavy charged gauge boson, W′, using the decay channels W′ → eν and W′ → τν → eνν ν is reported. The data used in the analysis were collected by the DO experiment at the Fermilab Tevatron during the 1992-93 p p collider run from an integrated luminosity of 13.9 ± 0.8 pb−1 at s =1.8 TeV . Assuming that the neutrino from W′ decay is stable and has a mass significantly less than mW′, an upper limit at the 95% confidence level is set on the cross section times branching ratio for p p → W′ → eν . A W′ with the same couplings to quarks and leptons as the standard model W boson is excluded for mW′

Published
1995

50. φ meson production from $$p\bar p$$ collisions at $$\sqrt s = 1.8$$ TeV

Author

R. P. Scharenberg, A. Rimai, J. M. LoSecco, N. N. Biswas, T. Carter, Y. Choi, K. Nelson, Pushpalatha C Bhat, C. S. Lindsey, A. S. Hirsch, A. P. McManus, L. J. Gutay, T.R. McMahon, Philip L. Cole, C. Loomis, J. Warchol, P. D. Beery, F. Turkot, J. R. Jennings, S. Banerjee, S. H. Oh, D. K. Wesson, R. Debonte, C. Allen, V. P. Kenney, Y. Zhan, C. Hojvat, N. T. Porile, D.D. Carmony, W. J. Robertson, J. M. Bishop, N. Morgan, C. Findeisen, W. D. Walker, V. DeCarlo, B. Stringfellow, M. A. Thompson, V. Balamurali, A. Bujak, T. Alexopoulos, D. Reeves, S. R. Stampke, C.H. Wang, A. R. Erwin, E. W. Anderson, and A. T. Goshaw

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Elementary particle, Charged particle, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Production (computer science), Fermilab, Quantum field theory, Collider, Engineering (miscellaneous), Bar (unit)
Abstract

Fermilab experiment E735 located at the CO intersection region of the\(\sqrt s = 1.8\) TeV\(p\bar p\) collider analysed over 900 Φ→K+K− events. Measured were the transverse momentum spectrum, the correlation between the average transverse momentum and the charged particle multiphcityNc, as well as the probability of Φ production per charged track,NΦ/Nc, versusNc. We have also made an estinate of the total inclusive cross section for Φ mesons,\(\sigma (p\bar p \to \phi X) = 7.3 \pm 2.2 mb\).

Published
1995

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