Author: "H. J. Willutzki" - Searchworks@Jio Institute Digital Library Search Results

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99 results on '"H. J. Willutzki"'

1. Inclusive Interactions of High-Energy Neutrinos and Antineutrinos in Iron

Author: J. G. H. de Groot, T. Hansl, M. Holder, J. Knobloch, J. May, H. P. Paar, P. Palazzi, A. Para, F. Ranjard, D. Schlatter, J. Steinberger, H. Suter, W. von Rüden, H. Wahl, S. Whitaker, E. G. H. Williams, F. Eisele, K. Kleinknecht, H. Lierl, G. Spahn, H. J. Willutzki, W. Dorth, F. Dydak, C. Geweniger, V. Hepp, K. Tittel, J. Wotschack, P. Bloch, B. Devaux, S. Loucatos, J. Maillard, J. P. Merlo, B. Peyaud, J. Rander, A. Savoy-Navarro, R. Turlay, and F. L. Navarria
Published: 2022

2. Determination of the Gluon Distribution in the Nucleon from Deep Inelastic Neutrino Scattering

Author: Claude Guyot, A. Para, T. Ruan, C. Geweniger, P. Palazzi, K. Tittel, J. Knobloch, H. Taureg, W. Wu, B. Renk, F. Ranjard, J. Steinberger, B. Pszola, Konrad Kleinknecht, F. Eisele, J. De Groot, Jp Schuller, H. P. Klasen, J. Królikowski, T. Flottmann, J. May, J. He, John Rander, R. Turlay, H. J. Willutzki, H. D. Wahl, F. Dydak, Halina Abramowicz, B. Peyaud, J. Rothberg, J. Duda, Jorg Wotschack, D. Schlatter, W. von Rüden, and Jean-Pierre Merlo
Subjects: Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), Bar (music), High Energy Physics::Lattice, High Energy Physics::Phenomenology, Structure (category theory), Perturbative QCD, Gluon, Nuclear physics, Distribution (mathematics), High Energy Physics::Experiment, Nucleon, Engineering (miscellaneous), Scaling, Particle Physics - Phenomenology
Abstract: The observed scaling violations of the nucleon structure functionF 2 and $$\bar q$$ have been analysed in the framework of perturbative QCD to determine the shape and magnitude of the gluon distribution. The data are in good agreement with leading order QCD, and the simultaneous use ofF 2 and $$\bar q$$ structure functions permits, for the first time, a reliable determination of the gluon structure function.
Published: 2022

3. The upgraded DO detector

Author: Vipin Bhatnagar, E. De La Cruz-Burelo, Laurent Chevalier, N. A. Kuchinsky, L. S. Vertogradov, Stephen Wimpenny, A. Bross, Y. Jacquier, Adam L. Lyon, Tiefu Zhao, N. Lahrichi, X. Zhang, T. Wlodek, B. Baumbaugh, Martin Grunewald, K. Genser, Ulrike Blumenschein, P. L.M. Podesta-Lerma, T. Marshall, Milos Lokajicek, Jean-Laurent Agram, Christian Autermann, A. Kostritski, Y. Arnoud, S. Lager, O. Dvornikov, M. Anastasoaie, U. Bassler, P. K. Mal, Darien Wood, Brad Abbott, Pierre Petroff, Sergey Denisov, D. Tompkins, P. Sheahan, S. E.K. Mattingly, M. Markus, V. Mikhailov, Chris Hays, K. J. Rani, A. Alton, V. V. Shary, L.V. Reddy, Vivek Jain, S. J. Hong, Paul Telford, Robert Hirosky, V. L. Malyshev, J. Rha, Alexander Khanov, F. Fleuret, Daniel R Claes, Yann Coadou, Nicholas John Hadley, C. P. Buszello, W. Kahl, S. Robinson, I. Churin, Regina Demina, R. Van Kooten, N. Jouravlev, Arnulf Quadt, Raimund Ströhmer, Michael A. Strauss, Michael Martens, R. Jayanti, B. Thooris, Marco Verzocchi, C. Magass, A. Besson, M. D. Corcoran, N. P. Kravchuk, V. A. Bezzubov, Elemer Nagy, G. Graham, Abdenour Lounis, A. Zieminski, Dugan O'Neil, E. G. Zverev, Joshua Thompson, R.J. Yarema, Arnaud Duperrin, H. S. Mao, V. Simak, Ted Zmuda, S. Blessing, Scott Snyder, V. S. Narasimhan, M. Abolins, J. P. Negret, D. Casey, E. Thomas, J. Huang, M. Vigneault, P. A. Rapidis, J. Lizarazo, A. M. Kalinin, V. M. Korablev, N. Spartana, Thomas Trefzger, E. J. Ramberg, S. N. Fatakia, Jaebeom Park, R. A. Sidwell, Suyong Choi, Rapson Gomez, A. Patwa, P. Padley, Denis Gelé, J. F. Bartlett, T. Moulik, R. P. Smith, Sophie Trincaz-Duvoid, M. Juarez, F. Borcherding, W. Pritchard, V. M. Podstavkov, Armen Vartapetian, R. J. Madaras, N. M. Cason, A. Goussiou, J. Steinberg, N. Gollub, R. F. Rodrigues, P. Lebrun, E. Machado, E. Hazen, R. Angstadt, D. Graham, S. N. Ahmed, B. Clement, Mitchell Wayne, D. Bonifas, Alberto Santoro, Yu. A. Gornushkin, David Colling, N. W. Reay, C. Rotolo, Christos Leonidopoulos, D. Beutel, J. Kasper, G. Sajot, J. Kozminski, Michael Shupe, Michael Hildreth, Dmitri Tsybychev, R. L. McCarthy, B. M. Sabirov, Y. Hu, C. Boswell, L. Lobo, Sascha Caron, H. Schellman, J. M. Kohli, R. DeMaat, G. Alkhazov, O. Boeriu, Marcia Begalli, J. G.R. Lima, Lorenzo Feligioni, Y. Kulik, L. Bagby, A. Yurkewicz, D. Kau, Kevin Black, Jovan Mitrevski, D. Toback, G. D. Alexeev, G. Martin-Chassard, A. Harel, Markus Klute, Sergio F Novaes, Norbert Wermes, K. Stevenson, Chris P. Barnes, B. Lavigne, Flera Rizatdinova, Ron Lipton, B. Olivier, S. Greder, Miguel Mostafa, Douglas Smith, Meenakshi Narain, Sherry Towers, Sarah Catherine Eno, Horst Severini, Ph Gris, A. Kryemadhi, Karel Smolek, J. P. Konrath, P. Schieferdecker, D. K. Cho, A. Stone, Wendy W. Davis, R. Zitoun, V. I. Rud, S. Söldner-Rembold, S. R. Hou, Alexandre Zabi, S. Uzunyan, Tobias Golling, Yonggang Huang, J. M. Hauptman, T. Scanlon, S. Kermiche, H. T. Diehl, T. A. Bolton, P. Verdier, Shuichi Kunori, Y. Pogorelov, J. Krane, P. Houben, R. Flores, K. M. Chan, Christian Zeitnitz, Cecilia Elena Gerber, Dhiman Chakraborty, V. Anosov, M. Roco, J. Womersley, Hyun-Chul Kim, John Parsons, Yurii Maravin, Junjie Zhu, F. Nang, Andrew White, R. Rechenmacher, Nikola Makovec, Mossadek Talby, B. Gómez, Yi Jiang, Suman Bala Beri, P. Laurens, M. Michaut, Gordon Watts, A. V. Kotwal, Harrison Prosper, Y. Xie, G. Ginther, D. Butler, J. Linnemann, Vivian O'Dell, H. Weerts, H. Dong, P. Ermolov, María Teresa Martín, M. Cooke, H. da Motta, D. Zieminska, M. Diesburg, D. Gillberg, A. A. Shishkin, A. Evdokimov, S. Desai, S. Grünendahl, J. Wittlin, Kristian Harder, V. Sirotenko, A. C. Le Bihan, Rupert Leitner, S. Fuess, M. Cristetiu, B. Davies, M. Wobisch, O. V. Eroshin, Y. Song, Md. Naimuddin, E. Chi, S.D. Kalmani, Shashikant Dugad, M. Merkin, Jianming Qian, J. Ellison, A. Juste, A. Melnitchouk, Steve Reucroft, Pm Tuts, P. Bonamy, Todd Adams, B. Gobbi, C. Tolian, M. Petteni, J. D. Degenhardt, S. W. Youn, E. Von Toerne, Wagner Carvalho, P. Demine, M.A. Baturitsky, J. M. Heinmiller, Hal Evans, Thomas Ferbel, A. K.A. Maciel, M. Ahsan, Sa. Jain, Dan Green, Emmanuel Busato, Alexander Leflat, V. M. Abazov, J. Raskowski, F. Touze, Nikos Varelas, L. Groer, A. M. Magnan, Thomas G Trippe, Karl Jakobs, A. Pompoš, T. Gadfort, A. S. Turcot, Phillip Gutierrez, Greg Landsberg, Sw. Banerjee, V. Hynek, Mark Raymond Adams, D. Karmanov, Q. Xu, T. Wijnen, M. Strovink, B. Connolly, L. Christofek, H. Zheng, D. Buchholz, Bing Zhou, Luis Mendoza, Lars Sonnenschein, G. Briskin, R. Hooper, D. Mendoza, T. Kurca, Pushpalatha C Bhat, S. Zviagintsev, A. Narayanan, M. B. Przybycien, Anurag Gupta, J. Lazoflores, A. Jonckheere, Marc Weber, S. Porokhovoy, P. Hanlet, Pedrame Bargassa, M. Utes, Pierre-Antoine Delsart, A. Jenkins, Helena Malbouisson, D. Chapin, Christophe Royon, Iain Alexander Bertram, V. V. Lipaev, K. Soustruznik, Kenneth Johns, M. Kopal, R. Chiche, Sudhir Malik, N. J. Buchanan, I. Ripp-Baudot, A. Meyer, P. Nagaraj, Jonas Strandberg, N. Parua, Ia Iashvili, J. Krider, R. K. Shivpuri, D. A. Stoyanova, K. Gounder, J. R. Kalk, Reiner Hauser, V. Buescher, Andrei Nomerotski, Michael Rijssenbeek, O. Atramentov, Sissel Hansen, A. Stefanik, W. D. Shephard, M. McKenna, Sharon Hagopian, K. Papageorgiou, V. Stolin, P. Skubic, Jean-Roch Vlimant, D. Skow, M. Vaz, Rodney Walker, Brajesh C Choudhary, M. Eads, M. Jaffré, M. A.C. Cummings, Raymond Brock, N. Wilcer, M. Larwill, V. Manakov, P. Tamburello, D. Coppage, G. Geurkov, J. N. Butler, R. Rucinski, Gavin Davies, Boaz Klima, P. van Gemmeren, S. Doulas, R. McCroskey, Andre Sznajder, J. Anderson, M. Doidge, L. Coney, T. Regan, Yuri Gershtein, F. Badaud, I. Katsanos, R. Beuselinck, P. D. Grannis, H. D. Wahl, T. Yasuda, V. White, S. N. Gurzhiev, A. Nurczyk, D. Wicke, Emmanuelle Perez, A. Baden, G. C. Blazey, Y. Yen, B. Zhang, Jean-Francois Grivaz, Y. A. Yatsunenko, S. H. Ahn, Arnaud Lucotte, B. Hoeneisen, Z. Ke, Alexander Kupco, J. Steele, N. A. Naumann, P.R. Vishwanath, H. J. Willutzki, J. Olsen, Y. Scheglov, Kaushik De, P. Russo, S. Baffioni, J. D. Hobbs, I. Hall, M. J. Ferreira, J. Warchol, A. Chandra, P. de Jong, Ricardo Piegaia, Florian Beaudette, M. Arov, R. Partridge, Gilvan Alves, J. Barreto, F. Yoffe, B. Satyanarayana, I.K. Prokhorov, K. Goldmann, B. Andrieu, P. Jonsson, E. Bockenthien, G. Bernardi, Freya Blekman, R. T. Neuenschwander, R. Hance, S. Tentindo-Repond, Carl Lindenmeyer, Heriberto Castilla-Valdez, D. Bauer, L. Canal, M. Bhattacharjee, F. Charles, G. Savage, I. Blackler, M. Bowden, Emanuela Barberis, Li Jingyuan, Kazunori Hanagaki, Dongliang Zhang, X. Meng, Marcel Vreeswijk, B. Spurlock, Thomas Hebbeker, M. Mulders, E.V. Komissarov, S. Chakrabarti, Peter Love, P. Johnson, P. Rubinov, T. Nunnemann, B. Baldin, A. Koubarovsky, C. Luo, Randy Ruchti, Manas Maity, M. A. Strang, J. Molina, C. Noeding, Reinhard Schwienhorst, M. H.G. Souza, Jan Stark, P. Polosov, Seo Won Lee, Henry Lubatti, Ashok Kumar, Charles Leggett, Juan Estrada, M. C. Cousinou, Julia S. Meyer, Zeno Dixon Greenwood, D. Käfer, A. Bellavance, M. Litmaath, A. A. Mayorov, K. W. Merritt, T. Vu Anh, M. Wegner, Mansoora Shamim, Carlos Avila, S. Sumowidagdo, S.A. Kahn, H. Greenlee, Sabine Crépé-Renaudin, J. Cammin, V. Oguri, C. Schwanenberger, W. M. Van Leeuwen, O. Peters, Marumi Kado, E. Galyaev, Liyuan Han, James C. Green, M. Zdrazil, Tulika Bose, S. Yacoob, C. Franklin, D. Huffman, W. M. Lee, N. Kirsch, P. Banerjee, M. Demarteau, A. Kharchilava, Z. M. Wang, David Miller, Carmen García, H. Haggerty, J. Dyer, A.A. Nozdrin, Gregory R Snow, G. Steinbrück, Andrew Brandt, S. Rapisarda, Andre Sopczak, M. Agelou, M. Binder, A. C.S. Assis Jesus, Guennadi Borissov, L. Sawyer, Philip Baringer, George Alverson, H. E. Fisk, Sergey Kuleshov, S. Protopopescu, Lev Dudko, C. Biscarat, E. Haggard, Aran Garcia-Bellido, P. Lewis, D. Hedin, M. Zanabria, Cristina Galea, Christophe Clement, D. Denisov, Elliott Cheu, S. Fu, W. C. Fisher, S. Moua, G. Gutierrez, Hwi Dong Yoo, S. Sengupta, A. S. Ito, Kirti Ranjan, H.E. Miettinen, Carsten Hensel, S. Kesisoglou, A. A. Vorobyov, A. V. Kozelov, D. Edmunds, M. Yan, S. Jabeen, Victor Daniel Elvira, S. Burke, W. E. Cooper, J. Hays, Xiuping Li, Q. Z. Li, V. V. Tokmenin, Neeti Parashar, S. Dean, Stephan Linn, A. Lobodenko, V. A. Bodyagin, Tae Jeong Kim, R. Bernhard, D. A. Wijngaarden, M. Gao, A. Cothenet, G. Hesketh, N. Oshima, M. P. Sanders, M. Zielinski, Daniel Bloch, J. Fast, Nikolay Terentyev, N. Wallace, M. Sosebee, Gustaaf Brooijmans, Sergey Burdin, A. Sanchez-Hernandez, Robert Kehoe, J. Lu, P. J. Van Den Berg, Jessica Levêque, K. Bos, Marc Besancon, J. Temple, T. Christiansen, Bobby Samir Acharya, H. A. Neal, Sung Keun Park, D. Meder, H. C. Shankar, V. Sorín, T. R. Wyatt, V. Zutshi, V. Vysotsky, B. G. Pope, M. A. Kubantsev, B. O. Oshinowo, W. Barg, Marvin Johnson, A. A. Schukin, M. R. Krishnaswamy, Sebastian Grinstein, O. Kouznetsov, E. Flattum, R. Yamada, M. Warsinsky, O. Bardon, T. Edwards, K. Yip, N. Xuan, L. Stutte, R. D. Schamberger, Timothy Andeen, R. E. Ray, L. Lueking, K. Krempetz, C. Miao, W. L. Prado Da Silva, S. Chopra, Andrew Askew, Zhengguo Zhao, Brigitte Vachon, D. Evans, Gregory J Pawloski, A.S. Dyshkant, M. Buehler, Jiri Kvita, V.V. Teterin, M. Lynker, J. Yu, X. F. Song, M. V. S. Rao, N. R. Stanton, J. Torborg, N. K. Mondal, Lev Uvarov, G. Le Meur, D. Shpakov, R. Jesik, S. Beauceron, Ariel Schwartzman, Melissa Ridel, Dorothee Schaile, G. Cisko, T. C. Bacon, Alexey Ferapontov, M. Wetstein, J. Bystricky, Zhenbin Wu, J. Foglesong, J. Fagan, Robert Harrington, A. Mendes, T. Fitzpatrick, Christian Schmitt, S. Nelson, R. Gelhaus, H. E. Montgomery, C. De La Taille, P. Mättig, K. Gray, E. Popkov, M. Hohlfeld, K. Del Signore, R. Illingworth, C. Han, D. Mihalcea, C. De Oliveira Martins, Victor Golovtsov, P. N. Ratoff, Emily Nurse, Elizabeth Gallas, T. McMahon, Maksym Titov, V. E. Kuznetsov, V. Gavrilov, D. Olis, Wendy Taylor, Allan G Clark, Roger Moore, R. Goodwin, Johannes Elmsheuser, J. T. Eltzroth, P. Neustroev, Laurent Duflot, David Cutts, R. Ramirez-Gomez, R. Kwarciany, Rupinder Kaur, Daniel Whiteson, Bradley Cox, S. J. De Jong, B. Kothari, J. Coss, D. Markley, A. A. Shchukin, L. Babukhadia, Frank Fiedler, E. Kajfasz, A. Magerkurth, A. Zatserklyaniy, N.A. Russakovich, M. Das, V. N. Evdokimov, Gervasio Gomez, Michael Begel, Eduardo De Moraes Gregores, G. A. Davis, Boris Tuchming, Luiz Mundim, J. F. Renardy, Limin Wang, Marc-Andre Pleier, M. Doets, N.V. Mokhov, B. Åsman, A. P. Heinson, T. H. Burnett, G. S. Muanza, R. E. Hall, D. Fein, M. Fortner, Don Lincoln, Erich Varnes, P. W. Balm, C. Hebert, Ulrich Heintz, M. Matulik, A. Bishoff, H. Jöstlein, S. Krzywdzinski, J. Green, A. Zylberstejn, Frank Filthaut, R. Kubinski, F. Lehner, D. M. Strom, B. C.K. Casey, Y. P. Merekov, E. Shabalina, J. Guglielmo, Kyoung-Ho Kim, Andy Haas, L. Phaf, G. W. Wilson, Frederic Deliot, Christopher George Tully, Y. M. Kharzheev, Patrick Slattery, G. J. Otero y Garzón, T. Toole, S. Uvarov, A. Boehnlein, H. L. Melanson, Ivor Fleck, J. Snow, B. Quinn, J. H. Christenson, Makoto Tomoto, David H. Adams, Alice Bean, F. Canelli, N. Oliveira, Maria Elena Pol, W. Gu, A. P. Kaan, J. Gardner, R. Choate, Walter Freeman, J. Kotcher, S. Anderson, Harald Fox, M. Vaupel, Y. D. Mutaf, I. A. Vasilyev, P. M. Perea, and F. Villeneuve-Seguier
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Tevatron, 01 natural sciences, Particle detector, law.invention, Nuclear physics, Data acquisition, law, 0103 physical sciences, Fermilab, 010306 general physics, Collider, Instrumentation, Physics, 010308 nuclear & particles physics, business.industry, Detector, Electrical engineering, Particle accelerator, D0 experiment, Experimental High Energy Physics, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Physics::Accelerator Physics, High Energy Physics::Experiment, business
Abstract: The DØ experiment enjoyed a very successful data-collection run at the Fermilab Tevatron collider between 1992 and 1996. Since then, the detector has been upgraded to take advantage of improvements to the Tevatron and to enhance its physics capabilities. We describe the new elements of the detector, including the silicon microstrip tracker, central fiber tracker, solenoidal magnet, preshower detectors, forward muon detector, and forward proton detector. The uranium/liquid-argon calorimeters and central muon detector, remaining from Run I, are discussed briefly. We also present the associated electronics, triggering, and data acquisition systems, along with the design and implementation of software specific to DØ. © 2006 Elsevier B.V. All rights reserved.
Published: 2016

4. Observation of the π(1800) and π2(1880) mesons in ηηπ− decay

Author: X. Shen, M. Lu, J. J. Manak, J. M. LoSecco, Jens H. Kuhn, M. Witkowski, M. Hayek, N. M. Cason, K. Danyo, D. B. White, W. D. Shephard, V. A. Bodyagin, Irina Vardanyan, S. U. Chung, A. I. Ostrovidov, J. Hu, E. I. Ivanov, P. Eugenio, J. P. Cummings, H. J. Willutzki, M. A. Kostin, N. B. Sinev, R. W. Hackenburg, J. P. Dowd, X. L. Fan, N. Shenhav, Amiran Tomaradze, C. Olchanski, V. V. Lipaev, V. Dorofeev, D. P. Weygand, J. M. Bishop, D. I. Ryabchikov, Kamal K. Seth, D. Joffe, D. L. Stienike, B. Sharin, J. S. Suh, Todd Adams, Vladimir Korotkikh, M. Nozar, T. K. Pedlar, Z. Bar-Yam, E. King, W. Kern, A. A. Yershov, L. I. Sarycheva, S. A. Taegar, Andrey Gribushin, G. S. Adams, D. S. Brown, A. V. Popov, S. P. Denisov, and Olga Kodolova
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Meson, Partial wave analysis, State (functional analysis)
Abstract: A partial-wave analysis of the reaction π − p → η η π − p at 18 GeV/c has been performed on a data sample of approximately 4000 events obtained by Brookhaven experiment E852. The J P C = 0 − + π ( 1800 ) state is observed in the a 0 ( 980 ) η and f 0 ( 1500 ) π decay modes. It has a mass of 1876 ± 18 ± 16 MeV / c 2 and a width of 221 ± 26 ± 38 MeV / c 2 . The J P C = 2 − + π 2 ( 1880 ) meson is observed decaying through a 2 ( 1320 ) η . It has a mass of 1929 ± 24 ± 18 MeV / c 2 and a width of 323 ± 87 ± 43 MeV / c 2 . Both states are potential candidates for non-exotic hybrid mesons.
Published: 2008

5. Confirmation of the 1−+ meson exotics in the ηπ0 system

Author: N. Shenhav, Z. Bar-Yam, K. Danyo, Todd Adams, Vladimir Korotkikh, W. D. Shephard, L. I. Sarycheva, G. S. Adams, J. S. Suh, J. M. LoSecco, M. Lu, Olga Kodolova, Kamal K. Seth, D. Joffe, H. J. Willutzki, E. I. Ivanov, J. P. Cummings, W. Kern, A. A. Yershov, R. W. Hackenburg, J. P. Dowd, Irina Vardanyan, Amiran Tomaradze, D. S. Brown, A. I. Demianov, M. Witkowski, P. Eugenio, C. Olchanski, E. King, D. P. Weygand, Jens H. Kuhn, M. Hayek, A. I. Ostrovidov, N. M. Cason, S. A. Taegar, J. M. Bishop, D. B. White, V. A. Bodyagin, S. U. Chung, T. K. Pedlar, M. A. Kostin, L. V. Malinina, X. Shen, N. B. Sinev, J. J. Manak, Andrey Gribushin, M. Nozar, X. Fan, D. L. Stienike, and J R Hu
Subjects: Physics, Nuclear physics, Crystal, Nuclear and High Energy Physics, Particle physics, Meson, Partial wave analysis, Exotic meson
Abstract: The exclusive reaction π − p → η π 0 n , η → π + π − π 0 at 18 GeV / c has been studied with a partial wave analysis on a sample of 23 492 η π 0 n events from BNL experiment E852. A mass-dependent fit is consistent with a resonant hypothesis for the P + wave, thus providing evidence for a neutral exotic meson with J P C = 1 − + , a mass of 1257 ± 20 ± 25 MeV / c 2 , and a width of 354 ± 64 ± 60 MeV / c 2 . New interpretations of the meson exotics in neutral η π 0 system observed in E852 and Crystal Barrel experiments are discussed.
Published: 2007

6. The muon system of the Run II DØdetector

Author: V. A. Bezzubov, J. P. Negret, Michael Shupe, V. Simak, V. M. Abazov, J. Raskowski, George Davey Smith, O.V. Dvornikov, V. N. Evdokimov, S. Doulas, L. S. Vertogradov, D. Beutel, A. Zieminski, V.B. Vysotsky, D. Hedin, P. Hanlet, Y. Scheglov, T. Fitzpatrick, Matthew A. Marcus, P. Polozov, V. V. Tokmenin, N. A. Kuchinsky, P.R. Vishwanath, H. J. Willutzki, R. Jayanti, Nikolay Terentyev, Tiefu Zhao, A. M. Kalinin, Sw. Banerjee, Vladimir Gavrilov, Rupert Leitner, E. Hazen, H. C. Shankar, N.A. Russakovich, Henry Lubatti, B. S. Acharya, N. Jouravlev, A. S. Ito, V. M. Korablev, V. Sirotenko, K. Soustruznik, B. Gómez, G. Gutierrez, Karel Smolek, A. A. Schukin, V. M. Podstavkov, M. Fortner, D. Tompkins, E. Chi, Neeti Parashar, L. Stutte, D. A. Stoyanova, S.D. Kalmani, Shashikant Dugad, O. Bardon, V. S. Narasimham, V. V. Lipaev, L.V. Reddy, A. Kostritsky, A.S. Dyshkant, H. Cease, N. Parua, N. Kirsch, V.V. Teterin, B. M. Sabirov, A. A. Mayorov, S.Y. Porokhovoi, M. Eads, A.A. Nozdrin, M. Larwill, A. Evdokimov, S. N. Gurzhiev, D. Shpakov, Yu. A. Gornushkin, I.K. Prokhorov, M. Kozlovsky, Sissel Hansen, A. A. Shishkin, Anurag Gupta, Y. A. Yatsunenko, Alexander Kupco, T. Regan, Viatcheslav Stolin, Manas Maity, P. Nagaraj, Lev Uvarov, R. McCroskey, A. Narayanan, J. Steinberg, E. Machado, R. Goodwin, P. Neustroev, E.V. Komissarov, Yuri Gershtein, T. Marshall, Milos Lokajicek, K. A. Johns, Y. N. Kharzheev, Darien Wood, M. Zanabria, S.A. Zvyagintsev, Victor Golovtsov, D. Denisov, H. Haggerty, N.V. Mokhov, R. Yamada, Y. P. Merekov, M.A. Baturitsky, Dan Green, M. Wobisch, F. Yoffe, J. N. Butler, I. A. Vasilyev, J. Temple, B. Baldin, S. Uvarov, N. K. Mondal, H. T. Diehl, Sergey Kuleshov, V. L. Malyshev, H. S. Mao, A. Vorobyov, A. V. Kozelov, M. V. S. Rao, S. P. Denisov, B. O. Oshinowo, G. D. Alexeev, M. R. Krishnaswamy, A. Lobodenko, V. A. Bodyagin, Daria Zieminska, B. Hoeneisen, B. Satyanarayana, V.A. Mikhailov, J. F. Bartlett, C. Rotolo, G. Alkhazov, V. Anosov, A. Stefanik, and N. P. Kravchuk
Subjects: Physics, Nuclear and High Energy Physics, Toroid, Physics::Instrumentation and Detectors, Detector, Tevatron, Particle accelerator, law.invention, Nuclear physics, law, Muon collider, Scintillation counter, Physics::Accelerator Physics, High Energy Physics::Experiment, Fermilab, Collider, Instrumentation
Abstract: We describe the design, construction, and performance of the upgraded DO muon system for Run II of the Fermilab Tevatron collider. Significant improvements have been made to the major subsystems of the DO muon detector: trigger scintillation counters, tracking detectors, and electronics. The Run II central muon detector has a new scintillation counter system inside the iron toroid and an improved scintillation counter system outside the iron toroid. In the forward region, new scintillation counter and tracking systems have been installed. Extensive shielding has been added in the forward region. A large fraction of the muon system electronics is also new.
Published: 2005

7. Exotic meson production in BNL experiment E852

Author: M Chasse, J. Hu, Andrey Gribushin, N. Shenhav, Todd Adams, Vladimir Korotkikh, S. A. Taegar, H. J. Willutzki, P. Eugenio, V Dorofeev, A. I. Demianov, W. D. Shephard, D. I. Ryabchikov, K. Danyo, Olga Kodolova, J. S. Suh, C. Olchanski, N. M. Cason, S. U. Chung, K. K. Seth, L. I. Sarycheva, D. L. Stienike, G. S. Adams, D. Joffe, R. W. Hackenburg, J. P. Dowd, N. B. Sinev, X. Shen, M. Lu, D. S. Brown, A. V. Popov, M. Nozar, Jens H. Kuhn, V. V. Lipaev, J. J. Manak, E. King, M. Witkowski, John M. LoSecco, M. Hayek, E. I. Ivanov, I. Kachaev, A Tomaradze, X. L. Fan, A. I. Ostrovidov, T. K. Pedlar, D. P. Weygand, J. M. Bishop, D. B. White, V. A. Bodyagin, M. A. Kostin, J Krenkel, Irina Vardanyan, Z. Bar-Yam, W. Kern, A. A. Yershov, S. P. Denisov, and J. P. Cummings
Subjects: Nuclear physics, Physics, History, Particle physics, Meson, Exotic meson, Computer Science Applications, Education
Abstract: The status of spin-exotic mesons is reviewed. There is now compelling evidence for at least three π1 states between one and two GeV. Preliminary results from the reaction π−p → π+π+π−π−π0p show structure in the exotic waves corresponding to IGJPC = 0−2+−.
Published: 2005

8. Exotic meson production in the f1(1285)π− system observed in the reaction π−p→ηπ+π−π−p at 18 GeV/c

Author: N. M. Cason, S. P. Denisov, S. U. Chung, M. Lu, J. P. Cummings, Z. Bar-Yam, H. J. Willutzki, P. Eugenio, N. B. Sinev, S. A. Taegar, R. W. Hackenburg, J. P. Dowd, W. Kern, A. A. Yershov, Amiran Tomaradze, J. S. Suh, C. Olchanski, J. Kuhn, J. J. Manak, J. Napolitano, V. Dorofeev, E. I. Ivanov, T. K. Pedlar, M. Witkowski, Kamal K. Seth, D. Joffe, M. Hayek, I. Kachaev, D. B. White, V. V. Lipaev, V. A. Bodyagin, D. P. Weygand, M. A. Kostin, L. I. Sarycheva, A. I. Demianov, J. M. LoSecco, Irina Vardanyan, X. Shen, N. Shenhav, K. Danyo, J. Hu, A. I. Ostrovidov, J. M. Bishop, Todd Adams, Vladimir Korotkikh, W. D. Shephard, X. L. Fan, D. L. Stienike, E. King, Andrey Gribushin, Olga Kodolova, D. I. Ryabchikov, G. S. Adams, D. S. Brown, A. V. Popov, and M. Nozar
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Flux tube, Meson, Partial wave analysis, Theoretical models, Parity (physics), Exotic meson, Atomic physics, Nuclear Experiment, Quantum number
Abstract: This Letter reports results from the partial wave analysis of the π−π−π+η final state in π−p collisions at 18 GeV /c . Strong evidence is observed for production of two mesons with exotic quantum numbers of spin, parity and charge conjugation, JPC=1−+ in the decay channel f1(1285)π−. The mass M=1709±24±41 MeV /c 2 and width Γ=403±80±115 MeV /c 2 of the first state are consistent with the parameters of the previously observed π1(1600). The second resonance with mass M=2001±30±92 MeV /c 2 and width Γ=333±52±49 MeV /c 2 agrees very well with predictions from theoretical models. In addition, the presence of π2(1900) is confirmed with mass M=2003±88±148 MeV /c 2 and width Γ=306±132±121 MeV /c 2 and a new state, a1(2096), is observed with mass M=2096±17±121 MeV /c 2 and width Γ=451±41±81 MeV /c 2 . The decay properties of these last two states are consistent with flux tube model predictions for hybrid mesons with non-exotic quantum numbers.
Published: 2004
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9. Observation of Exotic Meson Production in the Reactionπ−p→η′π−pat18GeV/c

Author: J. P. Cummings, A. I. Ostrovidov, D. B. White, V. A. Bodyagin, M. A. Kostin, J. Napolitano, M. Nozar, E. I. Ivanov, H. J. Willutzki, J. M. Bishop, E. King, S. A. Taegar, I. Kachaev, Todd Adams, Vladimir Korotkikh, Olga Kodolova, M. Witkowski, V. V. Lipaev, N. Shenhav, D. I. Ryabchikov, M. Hayek, N. M. Cason, J. J. Manak, L. I. Sarycheva, S. U. Chung, D. Joffe, J. A. Smith, Jens H. Kuhn, J. M. LoSecco, N. B. Sinev, D. L. Stienike, W. D. Shephard, G. S. Adams, T. K. Pedlar, X. L. Fan, D. S. Brown, V. Dorofeev, A. V. Popov, Kamal K. Seth, S. P. Denisov, D. P. Weygand, Irina Vardanyan, R. W. Hackenburg, X. Shen, J. P. Dowd, Amiran Tomaradze, Z. Bar-Yam, W. Kern, A. A. Yershov, K. Danyo, P. Eugenio, and C. Olchanski
Subjects: Physics, Particle physics, Crystallography, Meson, Partial wave analysis, Pi, General Physics and Astronomy, Exotic meson
Abstract: An amplitude analysis of an exclusive sample of 5765 events from the reaction {pi}{sup -}p{yields}{eta}{prime}{pi}{sup -}p at 18 GeV/c is described. The {eta}{prime}{pi}{sup -} production is dominated by natural parity exchange and by three partial waves: those with J{sup PC}=1{sup -+} , 2{sup ++} , and 4{sup ++} . A mass-dependent analysis of the partial-wave amplitudes indicates the production of the a{sub 2}(1320) meson as well as the a{sub 4}(2040) meson, observed for the first time decaying to {eta}{prime}{pi}{sup -} . The dominant, exotic (non-q{bar q}) 1{sup -+} partial wave is shown to be resonant with a mass of 1.597{+-}0.010{sup +0.045}{sub -0.010} GeV/c{sup 2} and a width of 0.340{+-}0.040{+-}0.050 GeV /c{sup 2} . This exotic state, the {pi}{sub 1}(1600) , is produced with a t dependence which is different from that of the a{sub 2}(1320) meson, indicating differences between the production mechanisms for the two states.
Published: 2001

10. Experimental evidence for hadroproduction of exotic mesons

Author: G. S. Adams, D. S. Brown, D. P. Weygand, T. Sulanke, R. Lindenbusch, J. Wise, V. V. Lipaev, H. J. Willutzki, R.R. Crittenden, A. Popov, J. J. Manak, S. A. Taegar, P. Eugenio, D. R. Rust, S. U. Chung, L. I. Sarycheva, J. A. Smith, Olga Kodolova, D. I. Ryabchikov, S. Teige, Eric L. Scott, C. Olchanski, V. Dorofeev, N. B. Sinev, N. Shenhav, N. M. Cason, Jens H. Kuhn, K. Danyo, A. R. Dzierba, M. Nozar, Kamal K. Seth, M. Witkowski, R. W. Hackenburg, J. P. Dowd, J. Gunter, E. King, W. D. Shephard, M. Hayek, D. B. White, S. P. Denisov, John M. LoSecco, B. B. Brabson, E. I. Ivanov, V. A. Bodyagin, M. A. Kostin, D. R. Thompson, Irina Vardanyan, Todd Adams, Vladimir Korotkikh, A. I. Ostrovidov, Jim Napolitano, D. L. Stienike, Z. Bar-Yam, W. Kern, A. A. Yershov, T. K. Pedlar, P.T. Smith, D. Zhao, I. Kachaev, J. P. Cummings, A. H. Sanjari, and J. M. Bishop
Subjects: Physics, Quark, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Meson production, Meson, Eta meson, High Energy Physics::Experiment, Exotic hadron, Nuclear Experiment
Abstract: New measurements of peripheral meson production are presented. The data confirm the existence of exotic mesons at 1.4 and 1.6 GeV/c2. The latter state dominates the eta'pi- decay spectrum. The data on eta pi+pi-pi- decay show large strength in several exotic (Jpc = 1- +) waves as well.
Published: 2001

11. Meson spectroscopy in θ−p interactions at 18 GeV/c-recent results from brookhaven E852

Author: J. A. Smith, T. K. Pedlar, H. J. Willutzki, R. Lindenbusch, J. Wise, Eric L. Scott, Jens H. Kuhn, T. Sulanke, I. Kachaev, Z. Bar-Yam, D. I. Ryabchikov, B. B. Brabson, D. Zhao, D. P. Weygand, Olga Kodolova, A. I. Ostrovidov, W. D. Shephard, P. Eugenio, V. V. Lipaev, A. H. Sanjari, W. Kern, A. A. Yershov, G. S. Adams, D. R. Thompson, J. P. Cummings, R.R. Crittenden, P.T. Smith, V. Dorofeev, D. R. Rust, N. M. Cason, L. I. Sarycheva, C. Olchanski, Irina Vardanyan, J. M. Bishop, D. S. Brown, M. Nozar, A. Popov, N. Shenhav, S. U. Chung, S. A. Taegar, J. Napolitano, M. Witkowski, N. B. Sinev, J. M. LoSecco, M. Hayek, K. K. Seth, D. B. White, Todd Adams, Vladimir Korotkikh, V. A. Bodyagin, M. A. Kostin, A. R. Dzierba, J. J. Manak, D. L. Stienike, S. Teige, E. I. Ivanov, E. King, R. W. Hackenburg, J. P. Dowd, J. Gunter, K. Kanyo, and S. P. Denisov
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, Constituent quark, High Energy Physics::Experiment, Nuclear Experiment, Spectroscopy
Abstract: Brookhaven Experiment E852 is an experiment in meson spectroscopy configured to detect final states interactions of π − p collisions in search for meson states incompatible with the constituent quark model. A description of the experimental apparatus and a general overview of the latest results is given.
Published: 2000

12. Observation of a NewJPC=1−+Exotic State in the Reactionπ−p→π+π−π−pat18GeV/c

Author: P. Eugenio, P. T. Smith, V. A. Bodyagin, E. Scott, A. H. Sanjari, J. M. Bishop, Sergey Denisov, N. Shenhav, I. Kachaev, V. Dorofeev, M. A. Kostin, J. Wise, S. A. Taegar, I. N. Vardanyan, N. M. Cason, A. Popov, T. K. Pedlar, A. R. Dzierba, J. P. Cummings, E. I. Ivanov, Todd Adams, Vladimir Korotkikh, H. J. Willutzki, M. Witkowski, V. Lipaev, D. Zhao, M. Nozar, Z. Bar-Yam, W. D. Shephard, D. R. Thompson, J. Napolitano, D. P. Weygand, W. Kern, A. A. Yershov, L. I. Sarycheva, J. A. Smith, S. Teige, J. M. LoSecco, D. White, G. S. Adams, D. S. Brown, T. Sulanke, R. Lindenbusch, Jens H. Kuhn, S. U. Chung, N. B. Sinev, A. I. Ostrovidov, Olga Kodolova, C. Olchanski, R.R. Crittenden, D. R. Rust, K. Danyo, B. B. Brabson, R. W. Hackenburg, J. P. Dowd, J. Gunter, J. J. Manak, D. L. Stienike, M. Hayek, D. I. Ryabchikov, E. King, and K. K. Seth
Subjects: Physics, Particle physics, Crystallography, Partial wave analysis, Pi, General Physics and Astronomy
Abstract: A partial-wave analysis of the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}p$ at $18\mathrm{GeV}/c$ has been performed on a data sample of 250 000 events obtained by Brookhaven experiment E852. The expected ${J}^{\mathrm{PC}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1}^{++}{a}_{1}(1260)$, ${2}^{++}{a}_{2}(1320)$, and ${2}^{\ensuremath{-}+}{\ensuremath{\pi}}_{2}(1670)$ resonant states are clearly observed. The exotic ${J}^{\mathrm{PC}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1}^{\ensuremath{-}+}$ wave produced in the natural parity exchange processes shows distinct resonancelike phase motion at about $1.6\mathrm{GeV}{/c}^{2}$ in the $\ensuremath{\rho}\ensuremath{\pi}$ channel. A mass-dependent fit results in a resonance mass of $1593\ifmmode\pm\else\textpm\fi{}{8}_{\ensuremath{-}47}^{+29}\mathrm{MeV}{/c}^{2}$ and a width of $168\ifmmode\pm\else\textpm\fi{}{20}_{\ensuremath{-}12}^{+150}\mathrm{MeV}{/c}^{2}$.
Published: 1998

13. Evidence for Exotic Meson Production in the Reactionπ−p→ηπ−pat18GeV/c

Author: I. Kachaev, P. Eugenio, V. Dorofeev, D. P. Weygand, M. Nozar, Kamal K. Seth, C. Olchanski, J. J. Manak, N. M. Cason, W. D. Shephard, E. I. Ivanov, L. I. Sarycheva, J. A. Smith, G. S. Adams, R. W. Hackenburg, J. P. Dowd, J. P. Cummings, E. King, John M. LoSecco, D. S. Brown, V. V. Lipaev, A. H. Sanjari, H. J. Willutzki, D. R. Thompson, S. A. Taegar, Todd Adams, D. I. Ryabchikov, J. M. Bishop, J. Wise, Vladimir Korotkikh, C. Strassburger, Olga Kodolova, M. Witkowski, A. I. Ostrovidov, D. L. Stienike, M. Hayek, S. U. Chung, N. B. Sinev, T. K. Pedlar, Jens H. Kuhn, D. B. White, V. A. Bodyagin, M. A. Kostin, Andrey Popov, J. Napolitano, D. Zhao, S. Denisov, Irina Vardanyan, Z. Bar-Yam, W. Kern, and A. A. Yershov
Subjects: Quantum chromodynamics, Physics, Particle physics, Crystallography, Meson, Partial wave analysis, Quark model, General Physics and Astronomy, Resonance, Production (computer science), Exotic meson, Quantum number
Abstract: The {eta}{pi}{sup {minus}} system has been studied in the reaction {pi}{sup {minus}}p{r_arrow}{eta}{pi}{sup {minus}}p at 18 GeV/c. A large asymmetry in the angular distribution is observed indicating interference between L-even and L-odd partial waves. The a{sub 2}(1320) is observed in the J{sup PC}=2{sup ++} wave, as is a broad enhancement between 1.2 and 1.6 GeV/c{sup 2} in the 1{sup {minus}+} wave. The observed phase difference between these waves shows that there is phase motion in addition to that due to a{sub 2}(1320) decay. The data can be fitted by interference between the a{sub 2}(1320) and an exotic 1{sup {minus}+} resonance with M=(1370{plus_minus}16{sup +50}{sub {minus}30}) MeV/c{sup 2} and {Gamma}=(385{plus_minus}40 {sup +65}{sub {minus}105}) MeV/c{sup 2} . {copyright} {ital 1997} {ital The American Physical Society}
Published: 1997

14. A 3000 element lead-glass electromagnetic calorimeter

Author: D. P. Weygand, W. D. Shephard, Irina Vardanyan, A. I. Demianov, P. Eugenio, J. J. Manak, S. Denisov, A. Dushkin, Todd Adams, Vladimir Korotkikh, P. T. Smith, V. A. Bodyagin, A. H. Sanjari, T. Sulanke, R. Lindenbusch, M. A. Kostin, C. Olchanski, J. Wise, B. B. Brabson, N. M. Cason, T. K. Pedlar, J. M. Bishop, J. P. Cummings, R. W. Hackenburg, J. P. Dowd, A. Popov, J. Gunter, V. V. Lipaev, Z. Bar-Yam, Kamal K. Seth, I. Shein, M. Witkowski, D. Zhao, W. Kern, A. A. Yershov, H. J. Willutzki, M. Hayek, S. A. Taegar, Eric L. Scott, E. V. Anoshina, L. I. Sarycheva, J. A. Smith, Andrey Gribushin, M. Nozar, G. S. Adams, Olga Kodolova, D. R. Thompson, A. I. Ostrovidov, D. S. Brown, D. R. Rust, R.R. Crittenden, S. U. Chung, N. B. Sinev, A. Soldatov, V. Kochetkov, S. Teige, Jim Napolitano, D. L. Steinike, E. King, John M. LoSecco, and A.R. Dzierba
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Electromagnetic calorimeter, Lead glass, Spectrometer, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Nuclear engineering, visual_art, visual_art.visual_art_medium, Instrumentation
Abstract: A 3045 element lead glass calorimeter and an associated fast trigger processor have been constructed, tested and implemented in BNL experiment E852 in conjunction with the multi-particle spectrometer (MPS). Approximately, 10 9 all-neutral and neutral plus charged triggers were recorded with this apparatus during data runs in 1994 and 1995. This paper reports on the construction, testing and performance of this lead glass calorimeter and the associated trigger processor.
Published: 1997

15. A cylindrical drift chamber with azimuthal and axial position readout

Author: S. Teige, Irina Vardanyan, E. King, T. Sulanke, John M. LoSecco, D. S. Brown, A. I. Ostrovidov, A.R. Dzierba, D. L. Stienike, S. U. Chung, A. H. Sanjari, P. Eugenio, N. M. Cason, Kamal K. Seth, A. Popov, M. Nozar, S. A. Taegar, N. B. Sinev, A. Soldatov, L. I. Sarycheva, C. Olchanski, J. M. Bishop, J. A. Smith, J. P. Cummings, Z. Bar-Yam, D. P. Weygand, Andrey Gribushin, V. V. Lipaev, H. J. Willutzki, R.R. Crittenden, R. Lindenbusch, J. Wise, A. I. Demianov, S. Denisov, I. Shein, W. Kern, A. A. Yershov, D. R. Rust, B. B. Brabson, Olga Kodolova, V. Kochetkov, G. S. Adams, Jim Napolitano, Eric L. Scott, M. Witkowski, M. Hayek, N. Shenhav, J. J. Manak, Todd Adams, Vladimir Korotkikh, W. D. Shephard, A. Dushkin, E. V. Anoshina, T. K. Pedlar, D. Zhao, R. W. Hackenburg, J. P. Dowd, J. Gunter, D. R. Thompson, P. T. Smith, V. A. Bodyagin, and M. A. Kostin
Subjects: Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Tracking (particle physics), Azimuth, Recoil, Optics, Position (vector), Electronics, Nuclear Experiment, business, National laboratory, Instrumentation
Abstract: A cylindrical multiwire drift chamber with axial charge-division has been constructed and used in experiment E852 at Brookhaven National Laboratory. It serves as a trigger element and as a tracking device for recoil protons in π p interactions. We describe the chamber's design considerations, details of its construction, electronics, and performance characteristics.
Published: 1997

16. Design and performance of a cesium iodide detector

Author: P. T. Smith, V. A. Bodyagin, M. A. Kostin, V. Kochetkov, Jim Napolitano, D. S. Brown, A.R. Dzierba, D. P. Weygand, M. Nozar, A. H. Sanjari, S. Denisov, N. M. Cason, R. W. Hackenburg, J. P. Dowd, S. A. Taegar, D. Zhao, J. Gunter, R.D. Cady, M. Witkowski, J. M. Bishop, R. Lindenbusch, J. Wise, D. L. Stienike, I. Shein, M. Hayek, Andrey Gribushin, D. R. Rust, S. U. Chung, H. J. Willutzki, G. S. Adams, A. I. Ostrovidov, N. B. Sinev, T. K. Pedlar, D. R. Thompson, L. I. Sarycheva, A. Soldatov, J. A. Smith, R.R. Crittenden, P. Eugenio, S. Teige, J. Gress, B. B. Brabson, C. Olchanski, N. Shenhav, A. S. Proskuryakov, Kamal K. Seth, W. D. Shephard, E. King, John M. LoSecco, Todd Adams, Vladimir Korotkikh, C. Kopp, Irina Vardanyan, J. J. Manak, A. Dushkin, Z. Bar-Yam, Eric L. Scott, W. Kern, A. A. Yershov, and T. Sulanke
Subjects: Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, business.industry, Preamplifier, Detector, Resolution (electron density), Photodiode, law.invention, Optics, Nuclear magnetic resonance, law, Calibration, High Energy Physics::Experiment, business, Instrumentation, Sensitivity (electronics), Energy (signal processing)
Abstract: The design, construction, and performance of a 198-element CsI detector built for Brookhaven experiment E852 is described. Design considerations for the array included such factors as rate, magnetic field, sensitivity and acceptance. Signals were obtained with a photodiode/preamplifier combination using PIN photodiodes. Data were taken over the course of two runs during the summers of 1993 and 1994. A calibration procedure using halo muons is described. The gain, energy resolution, and position resolution of the detector are discussed. Finally, the ability of the detector to be used as a low energy photon veto is illustrated using the data.
Published: 1996

17. Search for exotic mesons in π−p interactions at 18 GeV/c

Author: B. B. Brabson, P.T. Smith, L. I. Sarycheva, R. Lindenbusch, J. Wise, N. B. Sinev, A. Dushkin, A. Soldatov, Sergey Denisov, T. Sulanke, V. Kochetkov, A.S. Proskuryakov, Andrey Gribushin, E. King, Irina Vardanyan, T. K. Pedlar, S. A. Taegar, D. R. Thompson, G. S. Adams, M. Witkowski, Suh-urk Chung, N. M. Cason, W. D. Shephard, D. P. Weygand, D. S. Brown, A. H. Sanjari, J. M. LoSecco, A. I. Ostrovidov, P. Eugenio, J. M. Bishop, R.R. Crittenden, M. Nozar, J. Napolitano, H. J. Willutzki, D. Zhao, Jennifer A. Smith, R. W. Hackenburg, J. P. Dowd, J. Gunter, Todd Adams, Vladimir Korotkikh, C. Olchanski, K. K. Seth, A. R. Dzierba, D. R. Rust, V. A. Bodyagin, Olga Kodolova, M. A. Kostin, M. Hayck, Z. Bar-Yam, W. Kern, A. A. Yershov, J. J. Manak, D. L. Stienike, Edward Scott, S. Teige, and I. Shein
Subjects: Physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Particle physics, Meson, FOS: Physical sciences, National laboratory, High Energy Physics - Experiment, Bar (unit)
Abstract: The recent search for non $q \bar{q}$ mesons in $\pi^{-}p$ interactions at Brookhaven National Laboratory is summarized. Many final states such as $\eta \pi$, $\eta' \pi^{-}$, $a_{0} \pi$, $f_{1} \pi$, $a_{2} \pi$, $b_{1} \pi$, which are favored decay modes of exotics, are under investigation., Comment: 9 pages, PostScript, Presented at the International School of Nuclear Physics, Erice, Sicily, Italy, September 1995
Published: 1996

18. A scintillation detector of unique geometry

Author: D. P. Weygand, V. Kochetkov, S. U. Chung, S. A. Taegar, I. Shein, L.I. Belzer, R. Lindenbusch, P. Eugenio, C. Olchanski, S. Teige, D. R. Thompson, N. M. Cason, N. B. Sinev, A. Soldatov, Eric L. Scott, B. B. Brabson, N. A. Kruglov, J. P. Dowd, J. Gunter, A. I. Ostrovidov, J. J. Manak, A. Dushkin, Todd Adams, S. Denisov, R.R. Crittenden, A.S. Proskuryaov, H. J. Willutzki, Hao Xin, L. I. Sarycheva, John M. LoSecco, M. Hayek, J. M. Bishop, Andrey Gribushin, A.R. Dzierba, D. L. Stienike, W. D. Shephard, V.L. Korotkich, T. Sulanke, C. L. Davis, P. T. Smith, V. A. Bodyagin, Z. Bar-Yam, and W. Kern
Subjects: Physics, Nuclear and High Energy Physics, Scintillation, Physics::Instrumentation and Detectors, business.industry, Detector, Scintillator, Wavelength shifter, Particle detector, Optics, Magnet, Air space, business, Charged particle beam, Instrumentation
Abstract: A scintillation detector meeting specific physics requirements and geometrical constraints is described. It operates with high efficiency inside a 1 T magnet in an intense charged particle beam of up to 3 × 106 particles/s. It uses a unique light collection system combining air space, wavelength shifter disc and conventional lucite light guides. The detector is used in a veto mode to identify interactions that produce an all-neutral final state. The details of the counter's design, construction and performance are described.
Published: 1995

19. A cylindrical drift chamber of novel design

Author: A.R. Dzierba, P. T. Smith, J.M. Clement, D. P. Weygand, Daria Zieminska, Z. Bar-Yam, W. Kern, G.S. Mutchler, H. J. Willutzki, Jongmin Lee, B. E. Bonner, J.P. Cummings, R.R. Crittenden, S. U. Chung, and J. P. Dowd
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Mechanical engineering, Instrumentation, GeneralLiterature_MISCELLANEOUS
Abstract: A cylindrical drift chamber with novel design features has been built and used in a BNL fixed-target experiment. Its construction details and our operating experience with it are described.
Published: 1994

20. A study of two prototype lead glass electromagnetic calorimeters

Author: C. L. Davis, J. J. Manak, A. Dushkin, A. Soldatov, R.R. Crittenden, A. I. Demianov, A. I. Ostrovidov, A. S. Proskuryakov, Sergey Denisov, Z. Bar-Yam, T. Sulanke, N. A. Kruglov, H. J. Willutzki, W. Kern, J. M. LoSecco, S. U. Chung, N. B. Sinev, Z. Ziliak, D. R. Thompson, Andrey Gribushin, B. B. Brabson, D. P. Weygand, N. M. Cason, P. T. Smith, V. A. Bodyagin, Todd Adams, W. D. Shephard, V. Kochetkov, V.L. Korotkich, C. Olchanski, S. A. Taegar, L. I. Sarycheva, R. Lindenbusch, J. P. Dowd, J. Gunter, T. Foxford, R.D. Cady, A.R. Dzierba, D. L. Stienike, S. Teige, L.I. Belzer, Eric L. Scott, I. Shein, and J. M. Bishop
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Photomultiplier, Lead glass, Electromagnetic calorimeter, visual_art, visual_art.visual_art_medium, Instrumentation, Image resolution
Abstract: Two prototype lead glass calorimeters have been constructed and tested at the AGS at Brookhaven National Lab. The first is a 25-element prototype (P1)
Published: 1993

21. Partial-wave analysis ofJ/ψ→γηπ+π−

Author: A.C. Odian, Mark J. Burchell, Hartmut Sadrozinski, P. C. Kim, C. A. Heusch, P. M. Mockett, G. E. Gladding, L. Parrish, W. S. Lockman, D. Coffman, G. Eigen, T. H. Burnett, D. G. Hitlin, B. I. Eisenstein, Joseph Izen, W. J. Wisniewski, R. H. Schindler, R. E. Cassell, T. Freese, W. H. Toki, A. Li, T. Schalk, A. Seiden, Meng Wang, C. Gatto, P. Coyle, T. Bolton, I. E. Stockdale, J. S. Brown, J. F. Labs, F. DeJongh, Y. Zhu, S. Weseler, K. O. Bunnell, R. Mir, A. J.R. Weinstein, M. Scarlatella, U. Mallik, G. P. Dubois, B. Tripsas, R. Xu, H. J. Willutzki, D.H. Coward, J. Drinkard, Cg Matthews, D. Pitman, and J. D. Richman
Subjects: Physics, Particle physics, Meson, Branching fraction, Computer Science::Information Retrieval, Partial wave analysis, Hadron, Eta meson, General Physics and Astronomy, Resonance, J/psi meson, Particle decay, Crystallography, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We present a study of the decay {ital J}/{psi}{r arrow}{gamma}{eta}{pi}{sup +}{pi}{sup {minus}} using the Mark III detector at the SLAC {ital e}{sup +}{ital e{minus}} storage ring SPEAR. A partial-wave amplitude analysis is performed on the {eta}{pi}{sup +}{pi}{sup {minus}} system in the mass region from 1.2 to 1.5 GeV. We observe two {eta}{pi}{sup +}{pi}{sup {minus}} resonances, each decaying via {ital a}{sub 0}(980){pi}. We identify one as the axial-vector meson {ital f}{sub 1}(1285) and the other as a pseudoscalar resonance at 1.40 GeV.
Published: 1992

22. Observation of f1(1285)→π+π−π+π− in radiative decays

Author: Hartmut Sadrozinski, T. H. Burnett, U. Mallik, P.C. Kim, J. F. Labs, R. Mir, B.I. Eisentein, P. M. Mockett, G. E. Gladding, F. DeJongh, G. P. Dubois, D. G. Hitlin, A.J. Weinstein, W. J. Wisniewski, B. Tripsas, D. Pitman, W. S. Lockman, R. Xu, C. G. Matthews, J. S. Brown, A.C. Odian, A. Li, T. Bolton, R. H. Schindler, T. Freese, R. E. Cassell, D.H. Coward, W. Toki, G. Eigen, M. Z. Wang, M. Scarlatella, Joseph Izen, H. J. Willutzki, Y. Zhu, Jeffrey Richman, I. E. Stockdale, Abraham Seiden, K. O. Bunnell, T. L. Schalk, L. Parrish, Clemens A. Heusch, M. Burchell, C. Gatto, D. Coffman, and J. Drinkard
Subjects: Physics, Nuclear and High Energy Physics, Angular distribution, Branching fraction, Electron–positron annihilation, Atomic physics
Abstract: We present an analysis of J ψ →γf 1 (1285) , f 1 (1285)→ π + π − π + π − , using the Mark III detector at SPEAR, based on 5.8 × 10 6 produced J ψ events. We measure B( J ψ →γf 1 (1285) , f 1 (1285)→ π + π − π + π − )=(4.8±1.3±0.9) × 10 −5 . We obtain a new measurement of the absolute branching ratio of J ψ →γf 1 (1285) . The mixing angle of the f 1 (1285) and the f 1 (1420) in the 1 ++ nonet is determined.
Published: 1992

23. Resonant substructure in K[over ¯]πππ decays of D mesons

Author: J. M. Brown, A. Seiden, I. E. Stockdale, P. C. Kim, P. M. Mockett, M. Scarlatella, U. Mallik, A. J. Weinstein, C. G. Matthews, D. G. Hitlin, C. Gatto, A. Li, K. O. Bunnell, D. Pitman, B. I. Eisenstein, W. S. Lockman, H. F.W. Sadrozinski, L. Parrish, R. H. Schindler, T. Schalk, W. J. Wisniewski, B. Tripsas, D.H. Coward, W. Toki, R. Mir, B. Nemati, A. I. Mincer, G. P. Dubois, R. E. Cassell, A.C. Odian, Jeffrey Richman, J. J. Drinkard, Y. Zhu, F. DeJongh, T. H. Burnett, Joseph Izen, S. Weseler, H. J. Willutzki, T. Bolton, C. A. Heusch, G. Eigen, D. M. Coffman, S. Wasserbaech, M. Z. Wang, G. E. Gladding, T. Freese, and J. F. Labs
Subjects: Quark, Physics, Nuclear physics, Particle physics, Amplitude, Meson, Factorization, Branching fraction, Electron–positron annihilation, Isospin, Hadron, High Energy Physics::Experiment
Abstract: We determine the resonant substructure of D -> [...] decays using a five-dimensional maximum likelihood technique to extract the relative fractions and phases of the amplitudes contributing to the [...], [...], and [...] final states. We find that two-body decay modes account for about 75% of these decays. We obtain branching ratios for [...], [...], [...], [...], and [...] decay modes, as well as several three and four-body decay modes. In the case of [...] and [...], we obtain the branching ratios for all three possible isospin combinations, enabling us to extract the isospin 1/2 and 3/2 amplitudes. This allows us to eliminate the ambiguity due to phase shifts between the isospin amplitudes when comparing our results with theoretical models. We find that the isospin 3/2 amplitudes are suppressed relative to the isospin 1/2 amplitudes, confirming that an understanding of the lifetime difference of the D0 and D+ depends on an understanding of two-body hadronic decays. For the [...] decay modes, we obtain detailed information on the polarization of the [...] and [...]. This enables us to obtain information on form-factors for [...] and [...] transitions, within the context of the factorization hypothesis. Comparison of our results on [...] decays with recent results on semileptonic decays allows us to test the factorization hypothesis.
Published: 1992

24. Measurement of the inclusive decay properties of charmed mesons

Author: C. Grab, D. G. Hitlin, W. J. Wisniewski, Mark J. Burchell, T. H. Burnett, Jeffrey Richman, A. Seiden, P. M. Mockett, S. Weseler, Rafe Schindler, J. S. Brown, U. Mallik, Hartmut Sadrozinski, R. E. Cassell, L. Parrish, A. J. Weinstein, R. Mir, William S. Lockman, C. Simopoulos, Meng Wang, D. Coffman, F. DeJongh, V. Cook, D. E. Dorfan, T. Freese, P. C. Kim, Joseph Izen, R. Partridge, T. Schalk, I. E. Stockdale, G. Eigen, C. A. Heusch, C. G. Matthews, H. J. Willutzki, J. Drinkard, B. Tripsas, S. Dado, K. O. Bunnell, Y. Zhu, D. Wisinski, R. Xu, A. Mincer, W. Toki, Z. Bai, B. I. Eisenstein, J. F. Labs, D. Pitman, M. Scarlatella, B. Nemati, G. P. Dubois, D. H. Coward, T. Bolton, A. Li, T. E. Browder, A.C. Odian, C. Gatto, G. E. Gladding, S. Wasserbaech, and F. Villa
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Meson, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Multiplicity (chemistry), Strangeness, Nuclear Experiment, Storage ring
Abstract: We report a high statistics study of the inclusive decay properties of the charmed D0 and D+ mesons, and the first inclusive study of the charmed Ds+. The data are collected at s =3.77 GeV and s =4.14 GeV with the Mark III detector at the e+e− storage ring SPEAR. For each charmed meson species, the charged-particle multiplicity, the strangeness content of the final state, and the average π0 multiplicity are determined.
Published: 1991

25. Partial wave analysis of from

Author: J. Dowd, A. Boehnlein, H. J. Willutzki, J. H. Goldman, A. R. Dzierba, P. Rulon, J.M. Clement, N. Krishna, Richard C. Fernow, D. Boehnlein, S. Blessing, H.G. Kirk, G. S. Mutchler, Vasken Hagopian, Bonner, Daria Zieminska, R.R. Crittenden, S. U. Chung, Z. Bar-Yam, W. Kern, E. King, and Serban Protopopescu
Subjects: Physics, Nuclear and High Energy Physics, Amplitude, Partial wave analysis, Analytical chemistry, Atomic physics, Atomic and Molecular Physics, and Optics
Abstract: We present the results of an amplitude analysis of the spin parity components as a function of mass of the ( K + K 0 π − ) system as produced in the reaction p p → (K + K 0 π − ) X . Two peaks are observed in the ( K + K 0 π − ) spectrum, one at (1279 ± 2) MeV/c 2 , and one at (1417 ± 3) Mev/c 2 with a width of (62 ± 5) Mev/c 2 . The amplitude analysis was performed in sixteen 20 MeV/c 2 mass intervals from 1.24 to 1.56 GeV/c 2 . The waves used for the fitting were J PG = 0 −+ , 1 ++ , 1 +− , and background.
Published: 1991

26. Preliminary partial-wave analysis of the K+KOs π− system produced in 8 GeV/c K−p interactions

Author: S. U. Chung, J. Dowd, Z. Bar-Yam, A. Boehnlein, Jay Roberts, J.M. Clement, N. Krishna, R.R. Crittenden, H. J. Willutzki, Vasken Hagopian, D. P. Weygand, B. E. Bonner, Richard C. Fernow, Serban Protopopescu, W. Kern, H. Rudnicka, E. King, J. H. Goldman, S. Teige, D. Boehnlein, S. Blessing, H.G. Kirk, A. R. Dzierba, Daria Zieminska, P. Rulon, T. Marshall, and G. S. Mutchler
Subjects: Physics, Nuclear and High Energy Physics, Partial wave analysis, Resonance, Atomic physics, Atomic and Molecular Physics, and Optics, Preliminary analysis
Abstract: We have performed a partial-wave analysis of the K + K O S π − system produced in the reaction K − p → K + K 0 S π − Λ / Σ at 8 GeV/c. We present results of a preliminary analysis of approximately 2000 events in the KKπ mass range 1.24–1.64 GeV, with 0.0 2 . In the 1.28 GeV mass region, we observe a small J PG = 0 −+ contribution but little indication of a 1 ++ wave. We observe a large enhancement of events at the threshold of KK ∗ production. Above this threshold the J PG = 1 +− , 1 ++ and 0 −+ waves all contribute, and we see evidence for a 1 +− resonance below the KK ∗ threshold.
Published: 1991

27. Search for the from interactions at 8 GeV/c

Author: A. Boehnlein, N. Krishna, J.M. Clement, D. Boehnlein, Vasken Hagopian, Serban Protopopescu, B. E. Bonner, S. Blessing, H.G. Kirk, H. J. Willutzki, A. R. Dzierba, Richard C. Fernow, R.R. Crittenden, E. King, J. H. Goldman, J. Dowd, S. U. Chung, G. S. Mutchler, Daria Zieminska, P. Rulon, W. Kern, and Z. Bar-Yam
Subjects: Physics, Nuclear and High Energy Physics, Cross section (physics), Mass spectrum, Atomic physics, Resonance (particle physics), Atomic and Molecular Physics, and Optics, Order of magnitude
Abstract: A search for the U(3.1) resonance decaying into Λ pπ' s final states has been performed with negative results. The cross section upper limits are between 10 and 25 nanobarns. These cross sections are one or two order of magnitude lower than expected from previous results. Mass spectra of various final states are presented.
Published: 1991

28. Measurement of the hadronic structure of semileptonicD0andD+decays

Author: R. E. Cassell, B. Nemati, G. P. Dubois, I. E. Stockdale, G. E. Gladding, T. Bolton, T. H. Burnett, Meng Wang, A. Li, A.C. Odian, D. G. Hitlin, T. Freese, K. O. Bunnell, Y. Zhu, D. Wisinski, H. J. Willutzki, C. A. Heusch, Christoph Grab, D.H. Coward, F. DeJongh, Cg Matthews, J. Drinkard, Allen Mincer, W. S. Lockman, Joseph Izen, R. Xu, Hartmut Sadrozinski, D.E. Dorfan, P. C. Kim, P. M. Mockett, J. S. Brown, Mark J. Burchell, R. Mir, C. Simopoulos, L. Parrish, A. Seiden, V. Cook, Z. Bai, D. Coffman, M. Scarlatella, U. Mallik, W. H. Toki, J. F. Labs, B. I. Eisenstein, S. Weseler, R. H. Schindler, D. Pitman, B. Tripsas, F. Villa, J. D. Richman, R. Partridge, Steven Wasserbaech, W. J. Wisniewski, G. Eigen, A. J.R. Weinstein, T. Schalk, and C. Gatto
Subjects: Semileptonic decay, Physics, Crystallography, Particle physics, Particle decay, Meson, Branching fraction, Isospin, Hadron, General Physics and Astronomy
Abstract: Absolute branching fractions for the {ital D}{sub {ital l}3} and {ital D}{sub {ital l}4} decays {ital D}{sup +}{r arrow}{ital {bar K}} {sup 0}{ital e+}{nu}{sub {ital e}}, {ital D}{sup +}{r arrow}{ital {bar K}} {sup 0}{mu}{sup +}{nu}{sub {mu}}, {ital D}{sup +}{r arrow}{ital {bar K}} {sup *0}{ital e+}{nu}{sub {ital e}}, and {ital D}{sup 0}{r arrow}{ital K}{sup *{minus}}{ital e+}{nu}{sub {ital e}} are determined using completely reconstructed {ital D{bar D}} events at the {psi}(3770). Reconstructed {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital e+}{nu}{sub {ital e}} decays are used to determine the pole mass of the {ital f}{sub 4}({ital q}{sup 2}) form factor. Resonant {ital K}{sup *} production dominates the process {ital D}{r arrow}{ital K}{pi}{ital e}{nu}; the {ital K}{sup *} polarization is measured. Limits on several Cabibbo-suppressed channels are evaluated. A global fit imposing isospin symmetry is performed to the measured exclusive and inclusive semileptonic {ital D}{sup 0} and {ital D}{sup +} branching fractions to obtain an improved set of branching fractions.
Published: 1991

29. Partial-wave analysis ofJ/ψ→γKS0K±π∓

Author: R. H. Schindler, T. Schalk, S. Weseler, L. Parrish, C. A. Heusch, D.H. Coward, C. Gatto, Cg Matthews, Christoph Grab, F. Villa, S. A. Plaetzer, W. J. Wisniewski, T. Freese, V. Cook, P. C. Kim, I. E. Stockdale, P. M. Mockett, J. C. Brient, F. DeJongh, Jay Hauser, J. S. Brown, W. S. Lockman, W. H. Toki, Allen Mincer, G. E. Gladding, H. J. Willutzki, K. O. Bunnell, Y. Zhu, J. Drinkard, D. G. Hitlin, B. I. Eisenstein, D. Wisinski, H. F.W. Sadrozinski, Kevin Einsweiler, R. Mir, R. Partridge, Steven Wasserbaech, M. Scarlatella, R. E. Cassell, T. Bolton, A. J.R. Weinstein, U. Mallik, B. Nemati, G. Blaylock, G. Eigen, J. F. Labs, A. Seiden, G. P. Dubois, T. E. Browder, A.C. Odian, Joseph Izen, A. Li, Mark J. Burchell, Z. Bai, D. Pitman, Meng Wang, J. D. Richman, R. Xu, D.E. Dorfan, C. Simopoulos, D. Coffman, B. Tripsas, and T. H. Burnett
Subjects: Physics, Crystallography, Meson, Particle model, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Partial wave analysis, Hadron, Pi, Radiative decay, Isobar, General Physics and Astronomy, Resonance, Atomic physics
Abstract: Results from a partial-wave analysis of the decay {ital J}/{psi}{r arrow}{gamma}{ital K}{sub {ital S}}{sup 0}{ital K{plus minus}}{pi}{sup {minus plus}} in the {ital K}{sub {ital S}}{sup 0}{ital K}{sup {plus minus}}{pi}{sup {minus plus}} invariant-mass range 1.35--1.6 GeV/{ital c}{sup 2} are presented. Within the isobar model, the data in this mass range are best described by a mixture of 0{sup {minus}+} and 1{sup ++} amplitudes, corresponding to the {ital K}{sup *}{ital {bar K}}+c.c ({ital P} wave), {ital K}{sup *}{ital {bar K}}+c.c ({ital S} wave), and {ital a}{sub 0}(980) {pi} ({ital S} wave) channels. These results show that {eta}(1430) is not a {ital J}{sup {ital P}{ital C}}=0{sup {minus}+} {ital a}{sub 0}(980){pi} resonance, but a mixture of overlapping states.
Published: 1990

30. Observation of a pseudoscalar state in J/ψ→γφφ near φφ threshold

Author: T. E. Browder, A.C. Odian, S. A. Plaetzer, W. J. Wisniewski, R. Partridge, Steven Wasserbaech, B. Nemati, Z. Bai, G. P. Dubois, M. Scarlatella, L. Parrish, T. H. Burnett, F. Villa, D. Pitman, R. Xu, G. Eigen, Cg Matthews, A. Li, G. E. Gladding, D.E. Dorfan, Jay Hauser, C. Simopoulos, D. Coffman, A. Seiden, J. D. Richman, C. A. Heusch, J. S. Brown, R. F. Mozley, D. G. Hitlin, Meng Wang, R. E. Cassell, H. J. Willutzki, J. Drinkard, H. F.W. Sadrozinski, R. H. Schindler, T. Schalk, T. Freese, I. E. Stockdale, B. Tripsas, C. Gatto, A. J.R. Weinstein, P. C. Kim, K. O. Bunnell, Y. Zhu, D. Wisinski, P. M. Mockett, T. Bolton, B. I. Eisenstein, G. Blaylock, V. Cook, W. H. Toki, J. F. Labs, R. Mir, U. Mallik, W. S. Lockman, Kevin Einsweiler, Joseph Izen, F. DeJongh, Allen Mincer, and S. Weseler
Subjects: Particle scattering, Combinatorics, Physics, Pseudoscalar, Angular distribution, Branching fraction, Electron–positron annihilation, Radiative decay, General Physics and Astronomy, Atomic physics
Abstract: We present a study of the radiative decay J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\varphi}\ensuremath{\varphi} in the \ensuremath{\gamma}${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$ and \ensuremath{\gamma}${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathit{K}}_{\mathit{S}}^{0}$${\mathit{K}}_{\mathit{L}}^{0}$ final states. A pseudoscalar state is observed in the \ensuremath{\varphi}\ensuremath{\varphi} invariant-mass spectrum at 2.22 GeV/${\mathit{c}}^{2}$ with a width of 150 MeV/${\mathit{c}}^{2}$. The product branching ratios are B(J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}X)B(X\ensuremath{\rightarrow}\ensuremath{\varphi}\ensuremath{\varphi})=(3.3\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}0.5)\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}4}$ for the \ensuremath{\gamma}${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$ mode and B(J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}X)B(X\ensuremath{\rightarrow}\ensuremath{\varphi}\ensuremath{\varphi})=(2.7\ifmmode\pm\else\textpm\fi{}0.6 \ifmmode\pm\else\textpm\fi{}0.6)\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}4}$ for the \ensuremath{\gamma}${\mathit{K}}^{+}$${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathit{K}}_{\mathit{S}}^{0}$${\mathit{K}}_{\mathit{L}}^{0}$ mode. No evidence for ${2}^{++}$ states below 2.4 GeV/${\mathit{c}}^{2}$ is found in this radiative J/\ensuremath{\psi} decay mode.
Published: 1990

31. Measurement of the absolute inclusive leptonic-decay branching fraction of theDs+meson

Author: Z. Bai, G. T. Blaylock, T. Bolton, J.-C. Brient, T. Browder, J. S. Brown, K. O. Bunnell, M. Burchell, T. H. Burnett, R. E. Cassell, D. Coffman, V. Cook, D. H. Coward, F. DeJongh, D. E. Dorfan, J. Drinkard, G. P. Dubois, G. Eigen, K. F. Einsweiler, B. I. Eisenstein, T. Freese, C. Gatto, G. Gladding, C. Grab, J. Hauser, C. A. Heusch, D. G. Hitlin, J. M. Izen, P. C. Kim, J. Labs, A. Li, W. S. Lockman, U. Mallik, C. G. Matthews, A. I. Mincer, R. Mir, P. M. Mockett, R. F. Mozley, B. Nemati, A. Odian, L. Parrish, R. Partridge, D. Pitman, S. A. Plaetzer, J. D. Richman, H. F. W. Sadrozinski, M. Scarlatella, T. L. Schalk, R. H. Schindler, A. Seiden, C. Simopoulos, I. E. Stockdale, W. Toki, B. Tripsas, F. Villa, M. Z. Wang, S. Wasserbaech, A. Wattenberg, A. J. Weinstein, S. Weseler, H. J. Willutzki, D. Wisinski, W. J. Wisniewski, R. Xu, and Y. Zhu (The Mark III Collaboration)
Subjects: Physics, Crystallography, Particle decay, Particle physics, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, General Physics and Astronomy, Energy (signal processing)
Abstract: We have searched for the inclusive reaction {ital D}{sub {ital s}}{sup {plus minus}}{r arrow}{ital e}{sup {plus minus}}{ital X} using a tagged sample of 68 {ital D}{sub {ital s}}{sup {plus minus}} produced in the reaction {ital e}{sup +}{ital e}{sup {minus}}{r arrow}{ital D}{sub {ital s}}{sup {plus minus}}{ital D}{sub {ital s}}{sup *{minus plus}} at a center-of-mass energy of 4.14 GeV. The tagged sample consists of the decays {ital D}{sub {ital s}}{sup +}{r arrow}{phi}{pi}{sup +}, {ital D}{sub {ital s}}{sup +}{r arrow}{ital {bar K}} {sup *0}{ital K}{sup +}, and {ital D}{sub {ital s}}{sup +}{r arrow}{ital {bar K}} {sup 0}{ital K}{sup +}. We determine {ital B}({ital D}{sub {ital s}}{sup +}{r arrow}{ital e}{sup +}{ital X})=0.05{sub {minus}0.05}{sup +0.05}{plus minus}0.02, which corresponds to a limit of {ital B}({ital D}{sub {ital s}}{sup +}{r arrow}{ital e}{sup +}{ital X}){lt}0.20, at the 90% confidence level.
Published: 1990

32. Recent Ψ′ results from Mark III

Author: R. H. Schindler, M. Scarlatella, S. A. Plaetzer, C. A. Heusch, L. Parrish, W. S. Lockman, C. Grab, L. Köpke, A. Wattenberg, B. Tripsas, R. E. Cassell, S. Weseler, W. J. Wisniewski, M. Roco, T. E. Browder, A.C. Odian, G. Blaylock, R. Xu, A. Seiden, A. Mincer, D.E. Dorfan, C. G. Matthews, V. Cook, R. Mir, H. J. Willutzki, C. Simopoulos, J. Drinkard, J. M. Izen, D. Coffman, D. G. Hitlin, T. H. Burnett, Jeffrey Richman, U. Mallik, F. DeJongh, Ronen Mir, P. C. Kim, P. M. Mockett, H. F.W. Sadrozinski, I. E. Stockdale, Mark J. Burchell, T. Schalk, Z. Bai, C. Gatto, A. J.R. Weinstein, K. O. Bunnell, K. F. Einsweiler, B. I. Eisenstein, Y. Zhu, D. Wisinski, J. C. Brient, Meng Wang, R. Partridge, G. Eigen, J. Adler, S. Wasserbaech, F. Villa, G. E. Gladding, J. S. Brown, J. F. Labs, T. Freese, B. Nemati, G. P. Dubois, A. Li, Jay Hauser, D.H. Coward, W. Toki, and D. Pitman
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Statistics, Measure (mathematics), Atomic and Molecular Physics, and Optics
Abstract: Results on ψ′ decays from Mark III are presented. With a data sample of 240,000 ψ′ events, we measure ψ ′→ π + π − ψ , ψ ′→ ηψ , ψ ′→ γχ c , ψ ′→ γ 4 π ± , ψ ′→ γ 6 π ± , and perform a search for ψ ′→ ϱπ . Implications of our measurements are discussed.
Published: 1990

33. Resonant substructure inK−π+π+π−decays ofD0mesons

Author: A. Wattenberg, D. Pitman, J. D. Richman, L. Köpke, C. A. Heusch, J. C. Brient, A. L. Spadafora, T. Schalk, Mark J. Burchell, B. Tripsas, W. J. Wisniewski, C. Gatto, M. Scarlatella, T. Freese, T. Bolton, Jay Hauser, A. Seiden, A. J.R. Weinstein, Z. Bai, G. Blaylock, F. DeJongh, T. H. Burnett, Kevin Einsweiler, Allen Mincer, B. Nemati, R. H. Schindler, G. P. Dubois, W. Stockhausen, J. F. Labs, P. C. Kim, P. M. Mockett, B. I. Eisenstein, F. Villa, Hartmut Sadrozinski, S. Weseler, V. Cook, S. A. Plaetzer, D. G. Hitlin, W. H. Toki, W. S. Lockman, I. E. Stockdale, A. Li, K. O. Bunnell, T. E. Browder, A.C. Odian, Y. Zhu, G. E. Gladding, D. Wisinski, D.E. Dorfan, R. Mir, U. Mallik, C. Simopoulos, L. Parrish, D. Coffman, D.H. Coward, H. J. Willutzki, R. Xu, J. Drinkard, Cg Matthews, Meng Wang, R. E. Cassell, J. Adler, J. S. Brown, R. Partridge, Steven Wasserbaech, G. Eigen, Joseph Izen, and Christoph Grab
Subjects: Combinatorics, Physics, Meson, Pi, General Physics and Astronomy, Substructure
Abstract: We determine the resonant substructure of ${\mathit{D}}^{0}$\ensuremath{\rightarrow}${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathrm{\ensuremath{\pi}}}^{+}$${\mathrm{\ensuremath{\pi}}}^{+}$${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$ decays using a five-dimensional maximum-likelihood technique to extract the relative fractions and phases of the amplitudes contributing to this final state. We find that two-body decay modes account for at least 76% of all decays. We obtain branching ratios for several decay modes including B(${\mathit{D}}^{0}$\ensuremath{\rightarrow}${\mathit{K}}^{\mathrm{\ensuremath{-}}}$${\mathit{a}}_{1}^{+}$) =(9.0\ifmmode\pm\else\textpm\fi{}0.9\ifmmode\pm\else\textpm\fi{}1.7)%, B(${\mathit{D}}^{0}$\ensuremath{\rightarrow}K\ifmmode\bar\else\textasciimacron\fi{} $^{\mathrm{*}0}\mathrm{\ensuremath{\rho}}^{0}$)=(1.9\ifmmode\pm\else\textpm\fi{}0.3\ifmmode\pm\else\textpm\fi{}0.7)%, and B(${\mathit{D}}^{0}$\ensuremath{\rightarrow}${\mathit{K}}_{1}$(1270${)}^{\mathrm{\ensuremath{-}}}$${\mathrm{\ensuremath{\pi}}}^{+}$) =(1.8\ifmmode\pm\else\textpm\fi{}0.5 \ifmmode\pm\else\textpm\fi{}0.8)%. For the decay mode ${\mathit{D}}^{0}$\ensuremath{\rightarrow}K\ifmmode\bar\else\textasciimacron\fi{} $^{\mathrm{*}0}\mathrm{\ensuremath{\rho}}^{0}$, the K\ifmmode\bar\else\textasciimacron\fi{} $^{\mathrm{*}0}$ and ${\mathrm{\ensuremath{\rho}}}^{0}$ are found to be polarized with their spins oriented in the direction of their motion as seen from the ${\mathit{D}}^{0}$ frame.
Published: 1990

34. Analyzing power of inclusive production ofπ+,π−, andKS0by polarized protons at 13.3 and 18.5 GeV/c

Author: Z. Bar-Yam, W. Kern, A. Birman, Serban Protopopescu, Jay Roberts, L. Madansky, J.M. Clement, R. Moss, S. U. Chung, H. J. Willutzki, E. King, A. Etkin, G.C. Phillips, B. W. Mayes, H.E. Miettinen, N. Krishna, J. A. Buchanan, M. Nessi, L. S. Pinsky, S. R. Tonse, R. C. Fernow, Paul M. Stevenson, F. Nessi-Tedaldi, J. P. Dowd, T. J. Hallman, H.G. Kirk, J. W. Kruk, M. D. Corcoran, B. E. Bonner, and G. S. Mutchler
Subjects: Nuclear reaction, Physics, Pion, Meson, Proton, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hadron, Pi, Elementary particle, Atomic physics, Boson
Abstract: We have measured the analyzing power in {pi}{sup +}, {pi}{sup {minus}}, and {ital K}{sub {ital S}}{sup 0} production by a polarized proton beam at 13.3 and 18.5 GeV/{ital c}. The data cover the central and the beam fragmentation region, in the transverse-momentum range up to 2 GeV/{ital c}. The results indicate that sizable effects are present at high {ital x}{sub {ital F}} and also persist into the hard-scattering region for {ital K}{sub {ital S}}{sup 0} and {pi}{sup +}. A zero value of the analyzing power was observed for {pi}{sup {minus}} production.
Published: 1990

35. Exotic Meson Decay toωπ0π−

Author: D. B. White, V. A. Bodyagin, Irina Vardanyan, G. S. Adams, A. I. Ostrovidov, R. W. Hackenburg, J. P. Dowd, X. Shen, M. Witkowski, M. Hayek, T. K. Pedlar, K. K. Seth, Amiran Tomaradze, M. A. Kostin, N. M. Cason, P. Eugenio, Olga Kodolova, E. King, S. A. Taegar, J. J. Manak, J. P. Cummings, Z. Bar-Yam, J. S. Suh, S. U. Chung, V. V. Lipaev, J. M. LoSecco, D. P. Weygand, H. J. Willutzki, Todd Adams, Vladimir Korotkikh, M. Lu, K. Danyo, W. Kern, A. A. Yershov, L. I. Sarycheva, X. L. Fan, A. I. Demianov, Andrey Gribushin, N. B. Sinev, D. I. Ryabchikov, C. Olchanski, J. Hu, E. I. Ivanov, M. Nozar, D. L. Stienike, N. Shenhav, D. S. Brown, A. V. Popov, W. D. Shephard, V. Dorofeev, D. Joffe, I. Kachaev, J. M. Bishop, J. Kuhn, and S. P. Denisov
Subjects: Physics, Particle physics, Meson, Isovector, Partial wave analysis, General Physics and Astronomy, Exotic meson, Omega
Abstract: A partial-wave analysis of the mesons from the reaction $\pi^{-}% p\to\pi^{+}\pi^{-}\pi^{-}\pi^{0}\pi^{0}p$ has been performed. The data show $b_{1}\pi$ decay of the spin-exotic states $\pi_{1}(1600)$ and \ $\pi_{1}(2000)$. Three isovector $2^{-+}$ states were seen in the $\omega\rho^{-}$ decay channel. In addition to the well known $\pi_{2}(1670)$, signals were also observed for $\pi_{2}(1880)$ and $\pi_{2}(1970)$.
Published: 2005

36. Exotic meson decay to omegapi0pi

Author: M, Lu, G S, Adams, T, Adams, Z, Bar-Yam, J M, Bishop, V A, Bodyagin, D S, Brown, N M, Cason, S U, Chung, J P, Cummings, K, Danyo, A I, Demianov, S P, Denisov, V, Dorofeev, J P, Dowd, P, Eugenio, X L, Fan, A M, Gribushin, R W, Hackenburg, M, Hayek, J, Hu, E I, Ivanov, D, Joffe, I, Kachaev, W, Kern, E, King, O L, Kodolova, V L, Korotkikh, M A, Kostin, J, Kuhn, V V, Lipaev, J M, Losecco, J J, Manak, M, Nozar, C, Olchanski, A I, Ostrovidov, T K, Pedlar, A V, Popov, D I, Ryabchikov, L I, Sarycheva, K K, Seth, N, Shenhav, X, Shen, W D, Shephard, N B, Sinev, D L, Stienike, J S, Suh, S A, Taegar, A, Tomaradze, I N, Vardanyan, D P, Weygand, D B, White, H J, Willutzki, M, Witkowski, and A A, Yershov
Abstract: A partial-wave analysis of the mesons from the reaction pi(-)p --pi(+)pi(-)pi(-)pi(0)pi(0)p has been performed. The data show b(1)pi decay of the spin-exotic states pi(1)(1600) and pi(1)(2000). Three isovector 2(-+) states were seen in the omegarho(-) decay channel. In addition to the well known pi(2)(1670), signals were also observed for pi(2)(1880) and pi(2)(1970).
Published: 2004

37. Exotic andqq¯resonances in theπ+π−π−system produced inπ−pcollisions at18 GeV/c

Author: K. Danyo, W. D. Shephard, T. K. Pedlar, K. K. Seth, D. B. White, V. A. Bodyagin, J. P. Cummings, Irina Vardanyan, H. J. Willutzki, Todd Adams, Vladimir Korotkikh, Jens H. Kuhn, Suh-urk Chung, X. L. Fan, X. Shen, M. A. Kostin, N. Shenhav, E. I. Ivanov, D. Joffe, V. Dorofeev, J. M. LoSecco, P. Eugenio, V. V. Lipaev, J. Hu, A. I. Ostrovidov, C. Olchanski, M. Lu, R. W. Hackenburg, J. P. Dowd, Amiran Tomaradze, J. M. Bishop, N. M. Cason, J. Napolitano, J. J. Manak, D. L. Stienike, J. S. Suh, D. I. Ryabchikov, Z. Bar-Yam, S. A. Taegar, M. Witkowski, L. I. Sarycheva, W. Kern, A. A. Yershov, M. Hayek, E. King, D. P. Weygand, G. S. Adams, D. S. Brown, A. V. Popov, Olga Kodolova, S. P. Denisov, and M. Nozar
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, Resonance
Abstract: A partial-wave analysis of the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}\stackrel{\ensuremath{\rightarrow}}{p}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}p$ at $18 \mathrm{GeV}/c$ has been performed on a data sample of 250 000 events obtained in the Brookhaven experiment E852. The well-known ${a}_{1}(1260),$ ${a}_{2}(1320)$ and ${\ensuremath{\pi}}_{2}(1670)$ resonant states are observed. The existence of the $\ensuremath{\pi}(1800),$ ${a}_{1}(1700)$ and ${a}_{4}(2040)$ states is confirmed. The ${a}_{3}(1874)$ state is also observed. The exotic ${1}^{\ensuremath{-}+}$ ${\ensuremath{\pi}}_{1}(1600)$ state produced in the natural parity exchange process is found to decay in the $\ensuremath{\rho}(770){\ensuremath{\pi}}^{\ensuremath{-}}$ channel. A mass-dependent fit results in a resonance mass of $1593\ifmmode\pm\else\textpm\fi{}{8}_{\ensuremath{-}47}^{+29} \mathrm{MeV}{/c}^{2}$ and a width of $168\ifmmode\pm\else\textpm\fi{}{20}_{\ensuremath{-}12}^{+150} \mathrm{MeV}{/c}^{2}.$
Published: 2002

38. Partial wave analysis of theπ0π0system produced inπ−pcharge exchange collisions

Author: G. S. Adams, D. S. Brown, A. V. Popov, D. B. White, J. A. Smith, V. A. Bodyagin, M. Witkowski, M. Nozar, V. Dorofeev, D. P. Weygand, V. V. Lipaev, M. A. Kostin, J. M. LoSecco, R. W. Hackenburg, J. P. Dowd, J. Gunter, P.T. Smith, W. D. Shephard, L. I. Sarycheva, J. P. Cummings, M. Hayek, D. Zhao, A. I. Ostrovidov, Kamal K. Seth, A. R. Dzierba, Adam P. Szczepaniak, E. I. Ivanov, S. Teige, M. R. Shepherd, K. A. Plinske, Z. Bar-Yam, Eric L. Scott, D. L. Steinike, T. K. Pedlar, Jens H. Kuhn, J. Napolitano, W. Kern, A. A. Yershov, Todd Adams, S. A. Taegar, E. King, Vladimir Korotkikh, Olga Kodolova, K. Danyo, D. R. Thompson, Irina Vardanyan, S. U. Chung, P. Eugenio, N. Shenhav, J. J. Manak, A. H. Sanjari, T. Sulanke, N. B. Sinev, D. R. Rust, H. J. Willutzki, C. Olchanski, S. P. Denisov, J. M. Bishop, I. Kachaev, N. M. Cason, D. I. Ryabchikov, R. Lindenbusch, and J. Wise
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Partial wave analysis, Momentum transfer, Pi, Invariant mass, Relative phase, Atomic physics, Charge exchange
Abstract: A partial wave analysis of the ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ system produced in the charge exchange reaction ${\ensuremath{\pi}}^{\ensuremath{-}}\stackrel{\ensuremath{\rightarrow}}{p}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}n$ at an incident momentum of 18.3 $\mathrm{GeV}/c$ is presented as a function of the ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ invariant mass ${m}_{{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}}$ and momentum transfer squared $|t|$ from the incident ${\ensuremath{\pi}}^{\ensuremath{-}}$ to the outgoing ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ system. For small values of $|t|,$ the S-wave intensity shows a broad enhancement at low ${m}_{{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}}$ with a sharp dip in the vicinity of the ${f}_{0}(980).$ A dip is also observed in the vicinity of the ${f}_{0}(1500).$ There is a rapid variation of the S to ${D}_{0}$ relative phase difference in these mass regions. For large values of $|t|,$ the ${f}_{0}(980)$ appears as a bump. The ${f}_{2}(1270),$ observed in D waves, is produced dominantly by $\ensuremath{\pi}$ exchange at low values of $|t|$ and ${a}_{2}$ exchange at higher values of $|t|.$
Published: 2001

39. Observation of exotic meson production in the reaction pi- p --eta'pi- p at 18 GeV/c

Author: E I, Ivanov, D L, Stienike, D I, Ryabchikov, G S, Adams, T, Adams, Z, Bar-Yam, J M, Bishop, V A, Bodyagin, D S, Brown, N M, Cason, S U, Chung, J P, Cummings, K, Danyo, S P, Denisov, V A, Dorofeev, J P, Dowd, P, Eugenio, X L, Fan, R W, Hackenburg, M, Hayek, D, Joffe, I A, Kachaev, W, Kern, E, King, O L, Kodolova, V L, Korotkikh, M A, Kostin, J, Kuhn, V V, Lipaev, J M, LoSecco, J J, Manak, J, Napolitano, M, Nozar, C, Olchanski, A I, Ostrovidov, T K, Pedlar, A V, Popov, L I, Sarycheva, K K, Seth, X, Shen, N, Shenhav, W D, Shephard, N B, Sinev, J A, Smith, S A, Taegar, A, Tomaradze, I N, Vardanyan, D P, Weygand, D B, White, H J, Willutzki, M, Witkowski, and A A, Yershov
Abstract: An amplitude analysis of an exclusive sample of 5765 events from the reaction pi- p--eta'pi- p at 18 GeV/c is described. The eta'pi- production is dominated by natural parity exchange and by three partial waves: those with J(PC) = 1(-+), 2(++), and 4(++). A mass-dependent analysis of the partial-wave amplitudes indicates the production of the a2(1320) meson as well as the a4(2040) meson, observed for the first time decaying to eta'pi-. The dominant, exotic (non- qq) 1(-+) partial wave is shown to be resonant with a mass of 1.597+/-0.010(+0.045)(-0.010) GeV/c2 and a width of 0.340+/-0.040+/-0.050 GeV/c2. This exotic state, the pi1(1600), is produced with a t dependence which is different from that of the a2(1320) meson, indicating differences between the production mechanisms for the two states.
Published: 2001

40. Partial-wave analysis of theηπ+π−system produced in the reactionπ−p→ηπ+π−nat18 GeV/c

Author: D. R. Rust, D. P. Weygand, I. Kachaev, H. J. Willutzki, R. W. Hackenburg, J. P. Dowd, J. Gunter, E. I. Ivanov, V. V. Lipaev, J. Napolitano, M. Nozar, A. I. Ostrovidov, S. P. Denisov, N. M. Cason, D. R. Thompson, K. Danyo, T. Sulanke, A. R. Dzierba, Eric L. Scott, Jens H. Kuhn, A. H. Sanjari, J. J. Manak, J. P. Cummings, S. U. Chung, D. B. White, G. S. Adams, Z. Bar-Yam, S. A. Taegar, N. B. Sinev, V. A. Bodyagin, M. Witkowski, D. S. Brown, A. V. Popov, D. I. Ryabchikov, J. M. Bishop, M. Hayek, W. Kern, A. A. Yershov, W. D. Shephard, M. A. Kostin, Olga Kodolova, P. Eugenio, Irina Vardanyan, C. Olchanski, J. A. Smith, R. Lindenbusch, J. Wise, N. Shenhav, Todd Adams, Vladimir Korotkikh, D. Zhao, V. Dorofeev, Kamal K. Seth, J. M. LoSecco, T. K. Pedlar, P.T. Smith, L. I. Sarycheva, S. Teige, E. King, and D. L. Stienike
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Amplitude, Meson production, Branching fraction, Partial wave analysis, Nuclear Experiment, National laboratory
Abstract: A partial-wave analysis of 9082 {eta}{pi}{sup +}{pi}{sup -}n events produced in the reaction {pi}{sup -}p{yields}{eta}{pi}{sup +}{pi}{sup -}n at 18.3 GeV/c has been carried out using data from experiment 852 at Brookhaven National Laboratory. The data are dominated by J{sup PC}=0{sup -+} partial waves consistent with observation of the {eta}(1295) and the {eta}(1440). The mass and width of the {eta}(1295) were determined to be 1282{+-}5 MeV and 66{+-}13 MeV, respectively, while the {eta}(1440) was observed with a mass of 1404{+-}6 MeV and a width of 80{+-}21 MeV. Other partial waves of importance include the 1{sup ++} and the 1{sup +-} waves. Results of the partial wave analysis are combined with results of other experiments to estimate f{sub 1}(1285) branching fractions. These values are considerably different from current values determined without the aid of amplitude analyses. (c) 2000 The American Physical Society.
Published: 2000

41. Evidence for exoticJPC=1−+meson production in the reactionπ−p→ηπ−pat18GeV/c

Author: Z. Bar-Yam, I. Kachaev, L. I. Sarycheva, W. Kern, A. A. Yershov, G. S. Adams, M. Witkowski, E. I. Ivanov, W. D. Shephard, D. S. Brown, A. V. Popov, M. Hayek, A. I. Ostrovidov, P. Eugenio, D. Zhao, J. M. LoSecco, Irina Vardanyan, V. V. Lipaev, J. A. Smith, J. J. Manak, Todd Adams, Vladimir Korotkikh, S. U. Chung, T. K. Pedlar, C. Olchanski, N. B. Sinev, D. I. Ryabchikov, N. Shenhav, V. Dorofeev, Jens H. Kuhn, Kamal K. Seth, A. H. Sanjari, J. M. Bishop, K. Danyo, S. A. Taegar, D. B. White, V. A. Bodyagin, M. A. Kostin, D. P. Weygand, R. W. Hackenburg, J. P. Dowd, J. P. Cummings, D. R. Thompson, Olga Kodolova, J. Wise, M. Nozar, N. M. Cason, H. J. Willutzki, D. L. Stienike, S. P. Denisov, and E. King
Subjects: Physics, Phase difference, Nuclear and High Energy Physics, Particle physics, Crystallography, Meson production, Partial wave analysis, Resonance
Abstract: Details of the analysis of the $\ensuremath{\eta}{\ensuremath{\pi}}^{\ensuremath{-}}$ system studied in the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}\stackrel{\ensuremath{\rightarrow}}{p}\ensuremath{\eta}{\ensuremath{\pi}}^{\ensuremath{-}}p$ at $18\mathrm{GeV}/c$ are given. Separate analyses for the 2\ensuremath{\gamma} and ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ decay modes of the \ensuremath{\eta} are presented. An amplitude analysis of the data indicates the presence of interference between the ${a}_{2}^{\ensuremath{-}}(1320)$ and a ${J}^{\mathrm{PC}}{=1}^{\ensuremath{-}+}$ wave between 1.2 and $1.6 \mathrm{GeV}{/c}^{2}.$ The phase difference between these waves shows a phase motion not attributable solely to the ${a}_{2}^{\ensuremath{-}}(1320).$ The data can be fitted by interference between the ${a}_{2}^{\ensuremath{-}}(1320)$ and an exotic ${1}^{\ensuremath{-}+}$ resonance with $M=(1370\ifmmode\pm\else\textpm\fi{}{16}_{\ensuremath{-}30}^{+50})\mathrm{MeV}{/c}^{2}$ and $\ensuremath{\Gamma}=(385\ifmmode\pm\else\textpm\fi{}{40}_{\ensuremath{-}105}^{+65})\mathrm{MeV}{/c}^{2}.$ Our results are compared with those of other experiments.
Published: 1999

42. Upper limit on the absolute branching fraction forDs+→φπ+

Author: J. Adler, V. Cook, W. H. Toki, J. S. Brown, T. Schalk, Meng Wang, C. Gatto, S. Weseler, L. Parrish, M. Scarlatella, Kevin Einsweiler, D. Pitman, D.H. Coward, J. D. Richman, P. C. Kim, Cg Matthews, P. M. Mockett, R. E. Cassell, Christoph Grab, Mark J. Burchell, L. Köpke, M. Roco, J. F. Labs, T. E. Browder, A.C. Odian, R. Partridge, Steven Wasserbaech, A. J.R. Weinstein, A. Seiden, R. Xu, D.E. Dorfan, D. G. Hitlin, F. DeJongh, B. Tripsas, Allen Mincer, B. I. Eisenstein, A. Wattenberg, C. Simopoulos, W. J. Wisniewski, G. Eigen, S. A. Plaetzer, H. J. Willutzki, T. Freese, D. Coffman, J. Drinkard, R. H. Schindler, I. E. Stockdale, H. F.W. Sadrozinski, T. H. Burnett, Z. Bai, K. O. Bunnell, Y. Zhu, D. Wisinski, Joseph Izen, G. E. Gladding, F. Villa, J. C. Brient, B. Nemati, G. P. Dubois, A. Li, C. A. Heusch, W. S. Lockman, A. L. Spadafora, W. Stockhausen, T. Bolton, G. Blaylock, R. Mir, U. Mallik, and Jay Hauser
Subjects: Physics, Particle decay, Pion, Meson, Branching fraction, Quantum mechanics, Hadron, Pi, Analytical chemistry, General Physics and Astronomy, Limit (mathematics), Boson
Published: 1990

43. Properties of thea0(980)meson

Author: D. R. Thompson, R.R. Crittenden, S. Denisov, V. V. Lipaev, J. P. Cummings, G. S. Adams, C. Strassburger, V. Dorofeev, Olga Kodolova, R. Lindenbusch, T. Sulanke, J. Wise, D. S. Brown, Kamal K. Seth, Irina Vardanyan, D. L. Stienike, M. Nozar, A. I. Demianov, P. Eugenio, J. J. Manak, A. I. Ostrovidov, S. Teige, Z. Bar-Yam, E. King, C. Olchanski, John M. LoSecco, D. R. Rust, S. U. Chung, W. Kern, A. A. Yershov, H. J. Willutzki, N. B. Sinev, R. W. Hackenburg, J. P. Dowd, I. Kachaev, J. Gunter, Andrey Popov, Eric L. Scott, L. I. Sarycheva, D. I. Ryabchikov, Jens H. Kuhn, J. A. Smith, E. I. Ivanov, S. A. Taegar, J. Napolitano, A. H. Sanjari, N. M. Cason, D. P. Weygand, A. R. Dzierba, D. B. White, V. A. Bodyagin, J. M. Bishop, Todd Adams, Vladimir Korotkikh, W. D. Shephard, N. Shenhav, P.T. Smith, M. Witkowski, T. K. Pedlar, M. Hayek, B. B. Brabson, D. Zhao, and M. A. Kostin
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Partial wave analysis, Mass spectrum, Atomic physics, Type (model theory)
Abstract: Events of the type {pi}{sup {minus}}p{r_arrow}n{eta}{pi}{sup +}{pi}{sup {minus}} and {pi}{sup {minus}}p{r_arrow}n{eta}{pi}{sup 0} at 18thinspGeV/c are analyzed. The mass and width of the neutral and charged a{sub 0}(980) were determined. The neutral a{sub 0} is found to have a mass of (0.991{plus_minus}0.0025)thinspGeV/c{sup 2} and a width of (0.069{plus_minus}0.011)thinspGeV/c{sup 2}. A partial wave analysis technique yields (0.9983{plus_minus}0.0040) and (0.072{plus_minus}0.010)thinspGeV/c{sup 2} for the mass and width of the charged a{sub 0}. {copyright} {ital 1998} {ital The American Physical Society}
Published: 1998

44. Direct measurement of the J/ psi leptonic branching fraction

Author: C. A. Heusch, R. Mir, U. Mallik, A. Li, J. F. Labs, S. Wasserbaech, A. J.R. Weinstein, D.H. Coward, Meng Wang, Cg Matthews, B. Nemati, G. P. Dubois, D. G. Hitlin, I. E. Stockdale, T. Bolton, W. S. Lockman, G. E. Gladding, J. J. Drinkard, H. F.W. Sadrozinski, H. J. Willutzki, R. E. Cassell, M. Scarlatella, D. Coffman, T. Schalk, C. Gatto, R. Xu, G. Eigen, K. O. Bunnell, Y. Zhu, T. Freese, D. Pitman, L. Parrish, J. D. Richman, A. Seiden, J. S. Brown, F. DeJongh, B. Tripsas, Joseph Izen, R. H. Schindler, T. H. Burnett, W. H. Toki, P. C. Kim, P. M. Mockett, B. I. Eisenstein, W. J. Wisniewski, and A.C. Odian
Subjects: Physics, Particle physics, Meson, Branching fraction, Computer Science::Information Retrieval, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Quarkonium, Particle decay, Crystallography, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Strong coupling, High Energy Physics::Experiment
Abstract: The Mark III Collaboration has measured the {ital J}/{psi} leptonic branching fractions using the process {psi}(2{ital S}){r arrow}{pi}{sup +}{pi}{sup {minus}}{ital J}/{psi}, {ital J}/{psi}{r arrow}{ital l}{sup +}{ital l{minus}}. The results are {ital B}({ital J}/{psi}{r arrow}{ital e}{sup +}{ital e{minus}})=(5.92{plus minus}0.15{plus minus}0.20)% and {ital B}({ital J}/{psi}{r arrow}{mu}{sup +}{mu}{sup {minus}})=(5.90{plus minus}0.15{plus minus}0.19)%, where the first error is statistical and the second is systematic. Assuming lepton universality, the leptonic branching fraction of the {ital J}/{psi} is (5.91{plus minus}0.11{plus minus}0.20)%. This result is used to obtain the strong coupling constant {alpha}{sub {ital s}} and the QCD scale factor {Lambda}{sub MS} (M{bar S} denotes the modified minimal-subtraction scheme).
Published: 1992

45. Direct Measurement of theJψLeptonic Branching Fraction

Author: R. Mir, U. Mallik, J. F. Labs, W. S. Lockman, I. E. Stockdale, T. H. Burnett, T. Schalk, A. J.R. Weinstein, C. Gatto, D.H. Coward, B. Nemati, R. E. Cassell, M. Scarlatella, G. P. Dubois, Cg Matthews, K. O. Bunnell, S. Wasserbaech, H. J. Willutzki, R. H. Schindler, L. Parrish, T. Freese, R. Xu, C. A. Heusch, A. Seiden, J. J. Drinkard, Meng Wang, Y. Zhu, D. Coffman, G. E. Gladding, D. G. Hitlin, P. C. Kim, P. M. Mockett, H. F.W. Sadrozinski, F. DeJongh, B. Tripsas, B. I. Eisenstein, T. Bolton, D. Pitman, W. H. Toki, J. D. Richman, A. Li, J. S. Brown, Joseph Izen, G. Eigen, A.C. Odian, and W. J. Wisniewski
Subjects: Physics, Particle physics, Branching fraction, General Physics and Astronomy
Published: 1992

46. Observation ofDs+→K¯0K+andDs+→K¯0K+and an upper limit onDs+→K0π+

Author: D. G. Hitlin, H. F.W. Sadrozinski, Jay Hauser, T. Schalk, C. Gatto, J. Adler, D.H. Coward, S. Weseler, R. E. Cassell, D.E. Dorfan, S. A. Plaetzer, L. Parrish, M. Scarlatella, Cg Matthews, M. Roco, Christoph Grab, J. S. Brown, B. Tripsas, J. F. Labs, C. Simopoulos, R. Partridge, W. J. Wisniewski, R. P. Hamilton, Steven Wasserbaech, V. Cook, D. Coffman, R. H. Schindler, T. H. Burnett, W. Stockhausen, A. Seiden, A. Li, D. Pitman, W. H. Toki, G. Eigen, F. DeJongh, I. E. Stockdale, Allen Mincer, W. S. Lockman, P. C. Kim, P. M. Mockett, J. D. Richman, B. Nemati, G. P. Dubois, R. Xu, K. O. Bunnell, A.C. Odian, Y. Zhu, D. Wisinski, B. I. Eisenstein, Meng Wang, H. J. Willutzki, J. Drinkard, L. Köpke, J. J. Becker, R. Mir, Z. Bai, Kevin Einsweiler, U. Mallik, A. Wattenberg, T. Freese, Mark J. Burchell, Joseph Izen, A. J.R. Weinstein, G. E. Gladding, F. Villa, J. C. Brient, T. Bolton, G. Blaylock, C. A. Heusch, and A. L. Spadafora
Subjects: Combinatorics, Physics, General Physics and Astronomy, Bar (unit)
Abstract: We report the first observation of the decay ${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}K\ifmmode\bar\else\textasciimacron\fi{} $^{0}$${\mathit{K}}^{+}$ and a new measurement of the decay ${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}K\ifmmode\bar\else\textasciimacron\fi{} (892${)}^{0}$${\mathit{K}}^{+}$. The data were collected at \ensuremath{\surd}s=4.14 GeV with the Mark III detector at the SLAC ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ storage ring at SPEAR. We obtain the relative branching fractions B(${\mathit{D}}^{+}$s\ensuremath{\rightarrow}K${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{0}$${\mathit{K}}^{+}$/ B(${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}\ensuremath{\varphi}${\mathrm{\ensuremath{\pi}}}^{+}$)=0.92\ifmmode\pm\else\textpm\fi{}0.32\ifmmode\pm\else\textpm\fi{}0.20 and B(${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}K${\mathrm{\ifmmode\bar\else\textasciimacron\fi{}}}^{\mathrm{*}0}$${\mathit{K}}^{+}$)/ B(${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}\ensuremath{\varphi}${\mathrm{\ensuremath{\pi}}}^{+}$)=0.84\ifmmode\pm\else\textpm\fi{}0.30\ifmmode\pm\else\textpm\fi{}0.22, using our new determination of \ensuremath{\sigma}B(${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}\ensuremath{\varphi}${\mathrm{\ensuremath{\pi}}}^{+}$). A search for the Cabibbo-suppressed decay ${\mathit{D}}^{+}$s\ensuremath{\rightarrow}${\mathit{K}}^{0}$${\mathrm{\ensuremath{\pi}}}^{+}$ yields a limit B(${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}${\mathit{K}}^{0}$${\mathrm{\ensuremath{\pi}}}^{+}$)/B(${\mathit{D}}_{\mathit{s}}^{+}$\ensuremath{\rightarrow}\ensuremath{\varphi}${\mathrm{\ensuremath{\pi}}}^{+}$)0.21 at the 90% confidence level.
Published: 1989

47. Direct Measurement of CharmedD+andD0Semileptonic Branching Ratios

Author: T. H. Burnett, Kevin Einsweiler, V. Cook, Norbert Wermes, J. Roehrig, W. H. Toki, P. M. Mockett, L. Koepke, J. Perrier, B. I. Eisenstein, A.C. Odian, B. Tripsas, R. Fabrizio, G. E. Gladding, A. L. Duncan, J. C. Sleeman, C. A. Heusch, R. M. Baltrusaitis, Jon J Thaler, M. Scarlatella, K. O. Bunnell, D. Wisinski, R. H. Schindler, J. J. Becker, R. E. Cassell, A. J.R. Weinstein, W. J. Wisniewski, L. Moss, G. P. Dubois, D. G. Hitlin, C. Del Papa, A. Seiden, D.E. Dorfan, F. Villa, J. J. Russell, Jay Hauser, A. L. Spadafora, H. F.W. Sadrozinski, T. Schalk, S. A. Plaetzer, D. Coffman, G. Blaylock, W. S. Lockman, S. Dado, F. Grancagnolo, D.H. Coward, R. P. Hamilton, R. F. Mozley, R. Partridge, A. Nappi, H. J. Willutzki, J. S. Brown, A. Wattenberg, and J. D. Richman
Subjects: Semileptonic decay, Physics, Particle physics, Materials science, Meson, Branching fraction, Electron–positron annihilation, Hadron, Analytical chemistry, General Physics and Astronomy, Elementary particle, Branching (polymer chemistry), Branching (linguistics), Nuclear physics, Particle decay
Abstract: Measurements of the semileptonic branching ratios of charmed D/sup +/ and D/sup 0/ mesons are presented, from data collected at the psi(3770) in the Mark III detector at SPEAR. From a sample of events kinematically selected as charmed D/sup +/D/sup -/ or D/sup 0/D /sup 0/ pairs, the branching ratios R(D/sup +/..-->..e/sup +/+X) = (17.0 +- 1.9 +- 0.7)% and R(D/sup 0/..-->..e/sup +/+X) = (7.5 +- 1.1 +- 0.4 )% are obtained. The ratio of these measurements can be interpreted as the ratio of D/sup +/ and D/sup 0/ lifetimes tau/sup +//tau/sup 0/ = 2.3/sub -0.4-0.1/ /sub +0.5+0.1/ by neglect of the contribution of Cabibbo-suppressed decays to the total decay width.
Published: 1985

48. Measurement of the D∗ branching ratios

Author: W. Stockhausen, I. E. Stockdale, D.H. Coward, A. L. Duncan, Cg Matthews, K. O. Bunnell, Y. Zhu, D. Wisinski, A. Li, J. C. Brient, C. A. Heusch, L. Parrish, D. G. Hitlin, M. Scarlatella, G. E. Gladding, Mark J. Burchell, J. J. Thaler, Jay Hauser, Hartmut Sadrozinski, R. Mir, Christoph Grab, V. Cook, Norbert Wermes, A. L. Spadafora, U. Mallik, T. Schalk, A. J.R. Weinstein, W. H. Toki, W. J. Wisniewski, F. Villa, R. Xu, C. Gatto, S. A. Plaetzer, J. Adler, D.E. Dorfan, Kevin Einsweiler, A. Seiden, T. Bolton, J. Perrier, T. Freese, W. S. Lockman, A.C. Odian, C. Simopoulos, G. Blaylock, D. Coffman, J. S. Brown, R. Partridge, Steven Wasserbaech, B. Nemati, G. P. Dubois, G. Eigen, H. J. Willutzki, J. Drinkard, D. Pitman, J. D. Richman, T. H. Burnett, L. Köpke, A. Wattenberg, P. C. Kim, P. M. Mockett, R. E. Cassell, B. Tripsas, B. I. Eisenstein, Joseph Izen, J. J. Becker, R. P. Hamilton, R. H. Schindler, and R. F. Mozley
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle decay, Particle physics, Pion, Pair production, Meson, Branching fraction, Electron–positron annihilation, Hadron, Mass spectrum
Abstract: We report a new measurement of the D∗ branching ratios, using data obtained with the Mark III detector at the e^+e^− storage ring SPEAR at s=4.14GeV. A fit to the recoil mass squared spectrum of D mesons reconstructed through the decay modes K^−π^+π^+ and K^−π^+ is used to extract the D^(∗+) → γD^+, π^0D^+, π^+D^0 and D^(∗0) → γD^0, π^0D^0 branching ratios.
Published: 1988

49. Observation ofJ/ψradiative decay to pseudoscalarωω

Author: C. A. Heusch, Hartmut Sadrozinski, T. Schalk, A. L. Spadafora, P. M. Mockett, S. A. Plaetzer, G. E. Gladding, R. E. Cassell, J. D. Richman, V. Cook, Norbert Wermes, J. J. Thaler, J. J. Russell, W. H. Toki, B. I. Eisenstein, A. Seiden, L. Köpke, Kevin Einsweiler, R. Fabrizio, L. Moss, G. Blaylock, J. J. Becker, D. G. Hitlin, D.H. Coward, R. M. Baltrusaitis, M. Scarlatella, J. S. Brown, J. C. Sleeman, R. Partridge, A. Wattenberg, J. Perrier, T. H. Burnett, Yoshinobu Unno, H. J. Willutzki, R. H. Schindler, J. Roehrig, H. Cui, A. L. Duncan, W. J. Wisniewski, R. P. Hamilton, A. Nappi, K. O. Bunnell, D. Wisinski, C. Del Papa, A.C. Odian, R. F. Mozley, F. Villa, Jay Hauser, D.E. Dorfan, D. Coffman, and F. Grancagnolo
Subjects: Pseudoscalar, Physics, Particle physics, Angular correlation, Branching fraction, Electron–positron annihilation, Radiative decay, General Physics and Astronomy, High Energy Physics::Experiment, Omega
Abstract: We present evidence for the radiative decay J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\omega}\ensuremath{\omega} with a branching fraction of (1.76\ifmmode\pm\else\textpm\fi{}0.09\ifmmode\pm\else\textpm\fi{}0.45)\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}3}$. The \ensuremath{\omega}\ensuremath{\omega} invariant-mass distribution peaks at 1.8 GeV/${c}^{2}$, just above threshold. Analysis of angular correlations indicates that \ensuremath{\omega}\ensuremath{\omega} system below 2 GeV/${c}^{2}$ is predominantly pseudoscalar. Upper limits are presented for the branching fractions of \ensuremath{\omega}\ensuremath{\omega} decays of the \ensuremath{\theta}(1690), the ${g}_{T}$ states near 2.2 GeV/${c}^{2}$, and the ${\ensuremath{\eta}}_{c}$.
Published: 1985

50. Measurement of the neutral to charged current cross section ratio in neutrino and antineutrino interactions

Author: D. Schlatter, R. Turlay, H. D. Wahl, B. Peyaud, M. Holder, A. Berthelot, K. Tittel, A. Savoy-Navarro, G. Spahn, H. J. Willutzki, J. Steinberger, C. Geweniger, S. Whitaker, H. Suter, Konrad Kleinknecht, V. Hepp, M. Grimm, J. Wotschack, P. Bloch, John Rander, J. Knobloch, E.G.H. Williams, F. Dydak, F. Ranjard, H.P. Paar, W. Dorth, Francesco Navarria, J. May, P. Palazzi, B. Devaux, J. Maillard, and F. Eisele
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Neutral current, High Energy Physics::Phenomenology, Hadron, Nuclear physics, Cross section (physics), Narrow band, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Charged current, Particle Physics - Phenomenology
Abstract: The authors report on the analysis of inclusive neutral current events produced in neutrino and antineutrino narrow band beams. One finds for incident neutrino energies in the range 12-200 GeV and for hadron energies above 12 GeV a neutral charged current cross-section ratio of R/sub nu /=0.293+or-0.010 for incident neutrinos, and R/sub anti nu /=0.35+or-0.03 for antineutrinos. These ratios are consistent with the Weinberg-Salam model, with sin/sup 2/ theta /sub w/=0.24+or-0.02. (6 refs).
Published: 1977

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