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1. Measurement of the Generalized Forward Spin Polarizabilities of the Neutron

Author

G. G. Petratos, Arijit Saha, Z. E. Meziani, John C. Mitchell, W. Xu, M. Liang, Gordon D. Cates, T. Black, E. Lakuriqi, E. J. Brash, C. E. Jones, J. M. Finn, R. Holmes, T. Averett, Shalev Gilad, Baile Zhang, T. Saito, C. W. de Jager, S. Strauch, A. Deur, J. R. Calarco, B. Humensky, Seonho Choi, R. D. McKeown, H. Voskanian, F. Garibaldi, J. O. Hansen, Hiroshi Ueno, I. K. Kominis, L. Todor, Hiroaki Tsubota, D. S. Brown, Y. Roblin, X. Jiang, G. J. Lolos, P. Djawotho, Sonja Dieterich, A. Gasparian, G. J. Kumbartzki, Karl Slifer, A. Ketikyan, J. Berthot, Ronald Gilman, J. C. Yang, S. Malov, E. Burtin, Paul Souder, S. Jensen, Sebastien Incerti, G. Laveissière, G. Jones, Jiansong Gao, Bogdan Wojtsekhowski, Charles Glashausser, L. B. Auerbach, P.Y. Bertin, K. McCormick, S. Frullani, B. Hersman, D. Pripstein, J. J. LeRose, P. Vernin, H. Fonvieille, V. Gorbenko, Jian-Ping Chen, E. W. Hughes, Wolfgang Korsch, S. Teijiro, G. M. Huber, C. Jutier, M. K. Jones, Haiyan Gao, K. Kramer, J. Marroncle, David L. Prout, Nilanga Liyanage, F. Sabatié, R. Michaels, R. L.J. van der Meer, M. Rvachev, A. V. Glamazdin, Z. Chai, M. Kuss, R. DiSalvo, E. Chudakov, Kevin Fissum, R. Suleiman, E. Cisbani, P. A. Zolnierczuk, J. Gomez, M. Amarian, F. Xiong, Ronald Ransome, D. Rowntree, Koji Takahashi, Z. Papandreou, T. Pavlin, K. S. Kumar, Mauro Iodice, G. M. Urciuoli, William Bertozzi, E. Goldberg, Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and E94010

Subjects
Quantum chromodynamics, Physics, Chiral perturbation theory, Spin polarization, 010308 nuclear & particles physics, General Physics and Astronomy, 01 natural sciences, High Energy Physics - Experiment, Baryon, Polarizability, Quantum mechanics, Quantum electrodynamics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Perturbation theory, 010306 general physics, Nucleon, Nuclear Experiment, Spin-½
Abstract

The generalized forward spin polarizabilities $\gamma_0$ and $\delta_{LT}$ of the neutron have been extracted for the first time in a $Q^2$ range from 0.1 to 0.9 GeV$^2$. Since $\gamma_0$ is sensitive to nucleon resonances and $\delta_{LT}$ is insensitive to the $\Delta$ resonance, it is expected that the pair of forward spin polarizabilities should provide benchmark tests of the current understanding of the chiral dynamics of QCD. The new results on $\delta_{LT}$ show significant disagreement with Chiral Perturbation Theory calculations, while the data for $\gamma_0$ at low $Q^2$ are in good agreement with a next-to-lead order Relativistic Baryon Chiral Perturbation theory calculation. The data show good agreement with the phenomenological MAID model., Comment: 5 pages, 2 figures, corrected typo in author name, published in PRL

Published
2004
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2. Basic instrumentation for Hall A at Jefferson Lab

Author

T. Pussieux, Paul Souder, J. H. Mitchell, Y. Roblin, O. Ravel, E. Chudakov, K. A. Griffioen, C. Cavata, J. A. Templon, H. F. Ibrahim, J. S. McCarthy, M. A. Stevens, D. P. Watts, B. Frois, W. J. Schneider, Dipangkar Dutta, R. Di Salvo, R. I. Pomatsalyuk, A. Soldi, G. J. Kumbartzki, Arijit Saha, N. Colombel, J. Berthot, Jing Zhao, A. J. Sarty, B. D. Anderson, J. Martine, M. Coman, R. Michaels, M. B. Epstein, R. W. Lourie, J. O. Hansen, N. Degrande, J. Mclntyre, John Arrington, L. Zhu, W. Kahl, Bogdan Wojtsekhowski, P. Djawotho, M. Leuschner, William Bertozzi, K. A. Aniol, A. Gasparian, Karl Slifer, Jrm Annand, C. F. Perdrisat, D. Pripstein, M. Baylac, S. Kox, X. Jiang, K. Kramer, H. Breuer, David Hamilton, Jian-Ping Chen, T. Averett, L. B. Auerbach, G. A. Rutledge, G. Quéméner, Stephanie Escoffier, P.Y. Bertin, R. Suleiman, R. Carr, Pete Markowitz, A. Deur, Z. Papandreou, R. L. Walter, R. D. McKeown, T. P. Gorringe, M. Rvachev, R. Holmes, S. Churchwell, J. Marroncle, S. Platchkov, M. Khandaker, M. Liang, L. Pierangeli, K. Kino, A. Ketikyan, Kevin Fissum, F. W. Hersman, J. LeRose, F. Giuliani, P. E. Ulmer, Roberto Perrino, R. De Leo, J. Gao, L. A. Ewell, S. Jensen, R. Crateri, Shalev Gilad, C. W. de Jager, D. Lhuillier, J.E. Ducret, M. Gricia, R. Iommi, F. Sabatavenere, P. A. Zolnierczuk, K. Wijesooriya, Alan M. Nathan, D. Rowntree, E. Voutier, H. Holmgren, S. K. Nanda, D. G. Meekins, K. S. Egiyan, C. R. Howell, A. Serdarevic-Offermann, Hiroaki Tsubota, D. G. Zainea, J. R. Calarco, S. Esp, T. Terasawa, Vincent Breton, C. C. Chang, J. Domingo, T. Black, A. T. Katramatou, S. Kerhoas, F. Santavenere, J. Y. Mougey, R. Van de Vyver, G. M. Urciuoli, Seigo Kato, G. M. Huber, B. Reitz, E. J. Beise, K. S. Kumar, F. Garibaldi, Pavel Sorokin, G. J. Lolos, M. Lucentini, J. Segal, H. Xiang, D. V. Boykin, W. U. Boeglin, C. Glashausser, E. Cisbani, A. Leone, R. D. Ransomez, Gordon D. Cates, Sonja Dieterich, H. Voskanyan, C. Jutier, R. L.J. van der Meer, Olivier Gayou, James A. Miller, L. Van Hoorebeke, Sebastien Incerti, J. Jardillier, L. Cardman, James J. Kelly, F. Xiong, S. Jaminion, I. K. Kominis, K. McCormick, P. Vernin, P. M. Rutt, A. Petrosyan, David L. Prout, Nilanga Liyanage, L. Lagamba, X. Zheng, S. L. Spiegel, Branislav Vlahovic, Leonid Levchuk, Mauro Iodice, Larry Weinstein, F. Marie, D. G. Ireland, N. S. Chant, David Manley, V. A. Punjabi, C. E. Jones, J. Gomez, Wolfgang Korsch, W. Xu, J. W. Watson, M. Roedelbronn, F. T. Baker, Z. E. Meziani, T. Saito, S. Frullani, H. Ueno, E. J. Brash, R. Roche, E. Hovhannisyan, C. E. Hyde-Wright, N. d'Hose, L. Bimbot, G. Laveissière, R. Madey, Kazushige Maeda, A. Gavalya, W. Miller, D. Neyret, T. P. Smith, B. Diederich, E. Burtin, M. Holtrop, L. Todor, G. Dezern, Z. L. Zhou, K. Livingston, D. S. Dale, V. Zeps, S. Mayilyan, E. Folts, B. D. Milbrath, Haiyan Gao, J. M. Finn, O. Rondon-Aramayo, R. A. Lindgren, V. Gorbenko, A. V. Glamazdin, Z. Chai, E. A.J.M. Offermann, S. Malov, J. Alcorn, S. Strauch, A. Shahinyan, G. Rosner, H. Fonvieille, P. G. Roos, E. W. Hughes, K. Joo, D. S. Brown, P. Brindza, G. G. Petratos, S. van Verst, M. Khayat, S. Colilli, Douglas Higinbotham, M. K. Jones, D. J. Margaziotis, M. Kuss, Seonho Choi, Ronald Gilman, Thomas Jefferson National Accelerator Facility (Jefferson Lab), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), HALL A, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, Cryogenics, Scintillator, 7. Clean energy, 01 natural sciences, Particle identification, Magnetic field, Nuclear physics, Cardinal point, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment, 010306 general physics, Nucleon, Instrumentation, Cherenkov radiation
Abstract

The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was designed to study electro-and photo-induced reactions at very high luminosity and good momentum and angular resolution for at least one of the reaction products. The central components of Hall A are two identical high resolution spectrometers, which allow the vertical drift chambers in the focal plane to provide a momentum resolution of better than 2 x 10(-4). A variety of Cherenkov counters, scintillators and lead-glass calorimeters provide excellent particle identification. The facility has been operated successfully at a luminosity well in excess of 10(38) CM-2 s(-1). The research program is aimed at a variety of subjects, including nucleon structure functions, nucleon form factors and properties of the nuclear medium. (C) 2003 Elsevier B.V. All rights reserved.

Published
2004
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3. Search for flavor-changing neutral currents and lepton-family-number violation in two-body D0 decays

Author

R. Childers, D. M. Jansen, Daniel M. Kaplan, M. S. Kowitt, C. S. Mishra, R. G. Jeppesen, G. C. Kiang, Y. C. Chen, C. N. Brown, Jen-Chieh Peng, Pei-Ming Ho, P. K. Teng, V. Tanikella, C. W. Darden, J. Sa, Leon M. Lederman, K. Gounder, L. D. Isenhower, R. Schnathorst, W. E. Cooper, M. J. Leitch, G. Gidal, P. L. McGaughey, J. W. Lillberg, Kam-Biu Luk, Josh Moss, D. Pripstein, W. Luebke, J. S. Kapustinsky, R. S. Preston, James R. Wilson, M. E. Sadler, D. W. Lane, T. A. Carey, and M. H. Schub

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Particle decay, High Energy Physics - Experiment (hep-ex), Pair production, Branching fraction, FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, Lepton, High Energy Physics - Experiment
Abstract

Results of a search for the three neutral charm decays, D0 -> mu e, D0 -> mu mu, and D0 -> e e, are presented. This study was based on data collected in Experiment 789 at the Fermi National Accelerator Laboratory using 800 GeV/c proton-Au and proton-Be interactions. No evidence is found for any of the decays. Upper limits on the branching ratios, at the 90% confidence level, are obtained., 28 pages, 18 figures. Submitted to Physical Review D

Published
1999

4. FIRST MEASUREMENT OF THE LEFT-RIGHT ASYMMETRY IN Z-BOSON PRODUCTION

Author

R. E. Cassell, P.E. Rensing, T. Dean, T. H. Burnett, D. Mansour, D. D. Durrett, Gian Mario Bilei, R. Prepost, D. Pripstein, P.F. Jacques, R. Cowan, T. Gillman, R. Cotton, John Fox, K.C. Moffeit, E. Hyatt, E. L. Garwin, G. Putallaz, M. G. Strauss, G. Zapalac, D. Sherden, P. Stamer, R. King, R. Pitthan, P. Poffenberger, R. S. Kroeger, U. Schneekloth, P. Saez, S.C. Berridge, L. Piemontese, V. Nesterov, S. L. Cartwright, J. D. Turk, J. Carr, F. Suekane, T. Schalk, R. J. Decker, Enrico Pieroni, G. Shapiro, R. Shypit, M. Cavalli-Sforza, Koya Abe, M. Woods, R. J. Stephenson, M. Klein, J. M. Yamartino, K.G. Baird, H.J. Kang, David A. Williams, Y. Au, S. Yellin, J. A. Lauber, A. Santocchia, L. S. Osborne, S. Hedges, A. V. Kulikov, D. L. Burke, B. Meadows, R. W. Williams, T. Maruyama, W. M. Bugg, W. Wisniewski, J. Duboscq, T. Himel, A. Rothenberg, A. Szumilo, G. Tarnopolsky, A. Nuttall, Roberto Battiston, R. J. Belcinski, W. Baker, D. Walz, F. Toevs, D. Aston, D. J. Mellor, G. Mancinelli, R. F. Boyce, M. Z. Tahar, D. Chambers, Michael S. Witherell, T. Limberg, A. K. McKemey, H. Tang, S. Bethke, R. Dolin, D. W. G. S. Leith, L. Servoli, M. J. Fero, K. K. Young, Robert Wilson, W. A. Majid, G. B. Word, M. Zolotorev, D. P. Gurd, P. J. Emma, C. C. Young, G. Baranko, Alberto Benvenuti, D. R. Rust, F. E. Taylor, H. Cutler, R. K. Jobe, S. L. White, J. R. Bogart, T. Hansl-Kozanecka, H. A. Neal, J. A. Coller, A. Disco, M. Swartz, V. Ashford, D. Kharakh, G. Eigen, R. Castaldi, G. E. Schultz, P. C. Rowson, H. Yuta, L. Mathys, T. Junk, S. Bougerolle, M. J. Haney, A. Bean, C. G. Arroyo, R.J. Plano, B.L. Byers, P. Stiles, M. Minty, D. A. Forbush, M. Schneider, N. Phinney, G. Blaylock, L. Lintern, H. J. Hargis, A. K. Honma, T. Bienz, J. Escalera, Y. C. Du, W. Dunwoodie, S. R. Smith, T. W. Reeves, P. Kunz, C. Alber, W. L. Spence, P. M. Mockett, S. A. Wickert, M. Biasini, J. T. Seeman, I. M. Peruzzi, E. Mazzucato, Abraham Seiden, W. T. Emmet, J. Hoeflich, C. Simopoulos, A. Lu, M. Gaillard, G. R. Mason, J. F. Labs, M. E. Huffer, S. L. Shapiro, Stephen Watts, K. T. Pitts, D. C. Williams, V. Cook, J. Hodgson, H. Kawahara, J. Frisch, A. D. Yeremian, J. Ferrie, R. Sobie, A. Mazzucato, R. Messner, A. I. Mincer, P. Raimondi, A. L. Shoup, A.B. d'Oliveira, J. Harrison, M. Petradza, R. Blumberg, F. Dejongh, H. O. Ogren, S. McHugh, J. Wyss, P. Rankin, M. Langston, O. Bardon, David O. Caldwell, U. Nauenberg, Chris Adolphsen, G. Agnew, W. Craddock, G. Oxoby, R. Steiner, S. Gonzalez, X. Liu, S. S. Hertzbach, J. S. Whitaker, R. A. Johnson, H. M. Steiner, L. Rosenson, T. E. Browder, G. B. Chadwick, Roberto Dell'Orso, L. P. Robertson, J. Huber, R. Ben-David, Y. Kwon, J. Zhou, Richard Keeler, R. Rinta, M.D. Sokoloff, J. Va'vra, R. de Sangro, S. Dasu, L. Paffrath, A. Yim, R. Davis, S.St. Lorant, M. Turcotte, P. Coyle, B. Mours, Y. Hasegawa, J.P. Venuti, P. E.L. Clarke, C.J.S. Damerell, Gunther Haller, O. H. Saxton, D. Horelick, A. O. Bazarko, Martin Breidenbach, G. R. Bower, James Shank, C. Yee, E. Erdos, J. E. Brau, A. Calcaterra, G. Hallewell, R. R. Larsen, I. Stockdale, I. Karliner, Dominik Müller, G. Stewart, D. Warner, J.I. Friedman, Andrea Castro, R. Ossa, F. Barrera, C. Zeitlin, B. F. Wadsworth, T. A. Hodges, K. Skarpaas, H. L. Lynch, J. Rothberg, R. Langstaff, I. Abt, C. Vannini, P. Schenk, K. M. Fortune, R. Kajikawa, R. C. Hilomen, P. N. Burrows, Dario Bisello, H. O. Cohn, R. S. Panvini, E. Vella, Fred Wickens, T. Lyons, R. R. Kofler, B. I. Eisenstein, S. Jones, H. Shaw, Michael H. Shaevitz, C. Y. Prescott, J. C. Sheppard, T. Takahashi, C. Fan, T.J. Pavel, E. W. Hughes, S. H. Williams, G. D. Punkar, N. Toge, Jeffrey Richman, R. Dubois, J. A. Snyder, M. Kalelkar, R. K. Yamamoto, R. Frey, O. Chamberlain, S. De Simone, M. Tecchio, A. Lath, B. N. Ratcliff, M. Loreti, R. Berger, V. Ziemann, Piero Giorgio Verdini, M. Pauluzzi, T. Weber, F. Perrier, T. Bolton, M. H. Kelsey, Y. Iwasaki, T. L. Usher, A. Astbury, Giancarlo Mantovani, A. Gioumousis, T. Shimomura, M. Piccolo, J. F. McGowan, E.N. Spencer, H. Park, G. Mazaheri, J. R. Johnson, P. Zucchelli, H. Hwang, H. R. Band, I. Camilleri, D. G. Hitlin, G. Mundy, A. P. Waite, H. Y. Kim, J. J. Russell, G. Gladding, V. Hamilton, P. D. Acton, P. C. Kim, A. W. Weidemann, R. J. Morrison, B. A. Schumm, R. Verdier, E. L. Hart, L. Pescara, K. Hasegawa, K. Furuno, G. A. Beer, H. Petersen, D. Peters, S. Manly, R. H. Siemann, M. Nordby, Patrick Krejcik, R. W. Downing, D. Nelson, C. J. Oram, R. Elia, Marc Ross, A. S. Johnson, D. F. Alzofon, Michele Gallinaro, R. W. Zdarko, P. Antilogus, R. Bell, A.P.T. Palounek, M. Nussbaum, G. Mueller, A. Snyder, D. G. Coyne, D. R. Freytag, Nicola Bacchetta, D. McCormick, M. J. Fox, M. Kowitt, Rafe Schindler, A.K.S. Santha, Thomas W. Markiewicz, L. S. Rochester, J. Ma, S. Kaiser, D. Axen, C. Baltay, H. Masuda, J. Olsen, Nicholas Walker, Joseph Izen, T. Fieguth, Wit Busza, J. L. Turner, M. Carpinelli, P. De Simone, L. Chen, D. L. Hale, J. J. Thaler, R. Claus, J. Fujimoto, S. Ecklund, C. Jako, N.M. Krishna, W. W. Ash, G.J. Tappern, S. Suzuki, Henry W. Kendall, D. Su, M. Settles, M. D. Hildreth, F. Bird, E. Rutz, D. Cords, B. Camanzi, M. D. Woodly, J. Clendenin, T. Nagamine, D.C. Schultz, R.L. English, R. Watt, A. Sugiyama, J. Flynn, B. Burgess, D. Calloway, Abe, K, Abt, I, Acton, P, Adolphsen, C, Agnew, G, Alber, C, Alzofon, D, Antilogus, P, Arroyo, C, Ash, W, Ashford, V, Astbury, A, Aston, D, Au, Y, Axen, D, Bacchetta, N, Baird, K, Baker, W, Baltay, C, Band, H, Baranko, G, Bardon, O, Barrera, F, Battiston, R, Bazarko, A, Bean, A, Beer, G, Belcinski, R, Bell, R, Bendavid, R, Benvenuti, A, Berger, R, Berridge, S, Bethke, S, Biasini, M, Bienz, T, Bilei, G, Bird, F, Bisello, D, Blaylock, G, Blumberg, R, Bogart, J, Bolton, T, Bougerolle, S, Bower, G, Boyce, R, Brau, J, Breidenbach, M, Browder, T, Bugg, W, Burgess, B, Burke, D, Burnett, T, Burrows, P, Busza, W, Byers, B, Calcaterra, A, Caldwell, D, Calloway, D, Camanzi, B, Camilleri, I, Carpinelli, M, Carr, J, Cartwright, S, Cassell, R, Castaldi, R, Castro, A, Cavallisforza, M, Chadwick, G, Chamberlain, O, Chambers, D, Chen, L, Clarke, P, Claus, R, Clendenin, J, Cohn, H, Coller, J, Cook, V, Cords, D, Cotton, R, Cowan, R, Coyle, P, Coyne, D, Craddock, W, Cutler, H, Doliveira, A, Damerell, C, Dasu, S, Davis, R, Desangro, R, Desimone, P, Desimone, S, Dean, T, Decker, R, Dejongh, F, Dellorso, R, Disco, A, Dolin, R, Downing, R, Du, Y, Dubois, R, Duboscq, J, Dunwoodie, W, Durrett, D, Ecklund, S, Eigen, G, Eisenstein, B, Elia, R, Emma, P, Emmet, W, English, R, Erdos, E, Escalera, J, Fan, C, Fero, M, Ferrie, J, Fieguth, T, Flynn, J, Forbush, D, Fortune, K, Fox, J, Fox, M, Frey, R, Freytag, D, Friedman, J, Frisch, J, Fujimoto, J, Furuno, K, Gaillard, M, Gallinaro, M, Garwin, E, Gillman, T, Gioumousis, A, Gladding, G, Gonzalez, S, Gurd, D, Hale, D, Haller, G, Hallewell, G, Hamilton, V, Haney, M, Hanslkozanecka, T, Hargis, H, Harrison, J, Hart, E, Hasegawa, K, Hasegawa, Y, Hedges, S, Hertzbach, S, Hildreth, M, Hilomen, R, Himel, T, Hitlin, D, Hodges, T, Hodgson, J, Hoeflich, J, Honma, A, Horelick, D, Huber, J, Huffer, M, Hughes, E, Hwang, H, Hyatt, E, Iwasaki, Y, Izen, J, Jobe, R, Jacques, P, Jako, C, Johnson, A, Johnson, J, Johnson, R, Jones, S, Junk, T, Kaiser, S, Kajikawa, R, Kalelkar, M, Kang, H, Karliner, I, Kawahara, H, Keeler, R, Kelsey, M, Kendall, H, Kharakh, D, Kim, H, Kim, P, King, R, Klein, M, Kofler, R, Kowitt, M, Krejcik, P, Krishna, N, Kroeger, R, Kulikov, A, Kunz, P, Kwon, Y, Labs, J, Langstaff, R, Langston, M, Larsen, R, Lath, A, Lauber, J, Leith, D, Limberg, T, Lintern, L, Liu, X, Loreti, M, Lu, A, Lynch, H, Lyons, T, Ma, J, Majid, W, Mancinelli, G, Manly, S, Mansour, D, Mantovani, G, Markiewicz, T, Maruyama, T, Mason, G, Masuda, H, Mathys, L, Mazaheri, G, Mazzucato, A, Mazzucato, E, Mccormick, D, Mcgowan, J, Mchugh, S, Mckemey, A, Meadows, B, Mellor, D, Messner, R, Mincer, A, Minty, M, Mockett, P, Moffeit, K, Morrison, R, Mours, B, Mueller, G, Muller, D, Mundy, G, Nagamine, T, Nauenberg, U, Neal, H, Nelson, D, Nesterov, V, Nordby, M, Nussbaum, M, Nuttall, A, Ogren, H, Olsen, J, Oram, C, Osborne, L, Ossa, R, Oxoby, G, Paffrath, L, Palounek, A, Panvini, R, Park, H, Pauluzzi, M, Pavel, T, Perrier, F, Peruzzi, I, Pescara, L, Peters, D, Petersen, H, Petradza, M, Phinney, N, Piccolo, M, Piemontese, L, Pieroni, E, Pitthan, R, Pitts, K, Plano, R, Poffenberger, P, Prepost, R, Prescott, C, Pripstein, D, Punkar, G, Putallaz, G, Raimondi, P, Rankin, P, Ratcliff, B, Reeves, T, Rensing, P, Richman, J, Rinta, R, Robertson, L, Rochester, L, Rosenson, L, Ross, M, Rothberg, J, Rothenberg, A, Rowson, P, Russell, J, Rust, D, Rutz, E, Saez, P, Santha, A, Santocchia, A, Saxton, O, Schalk, T, Schenk, P, Schindler, R, Schneekloth, U, Schneider, M, Schultz, D, Schultz, G, Schumm, B, Seeman, J, Seiden, A, Servoli, L, Settles, M, Shaevitz, M, Shank, J, Shapiro, G, Shapiro, S, Shaw, H, Sheppard, J, Sherden, D, Shimomura, T, Shoup, A, Shypit, R, Siemann, R, Simopoulos, C, Skarpaas, K, Smith, S, Snyder, A, Snyder, J, Sobie, R, Sokoloff, M, Spence, W, Spencer, E, Stlorant, S, Stamer, P, Steiner, H, Steiner, R, Stephenson, R, Stewart, G, Stiles, P, Stockdale, I, Strauss, M, Su, D, Suekane, F, Sugiyama, A, Suzuki, S, Swartz, M, Szumilo, A, Tahar, M, Takahashi, T, Tang, H, Tappern, G, Tarnopolsky, G, Taylor, F, Tecchio, M, Thaler, J, Toevs, F, Toge, N, Turcotte, M, Turk, J, Turner, J, Usher, T, Vavra, J, Vannini, C, Vella, E, Venuti, J, Verdier, R, Verdini, P, Wadsworth, B, Waite, A, Walker, N, Walz, D, Warner, D, Watt, R, Watts, S, Weber, T, Weidemann, A, Whitaker, J, White, S, Wickens, F, Wickert, S, Williams, D, Williams, R, Williams, S, Wilson, R, Wisniewski, W, Witherell, M, Woodly, M, Woods, M, Word, G, Wyss, J, Yamamoto, R, Yamartino, J, Yee, C, Yeremian, A, Yellin, S, Yim, A, Young, C, Young, K, Yuta, H, Zapalac, G, Zdarko, R, Zeitlin, C, Zhou, J, Ziemann, V, Zolotorev, M, and Zucchelli, P

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Positron beam, Electron–positron annihilation, media_common.quotation_subject, General Physics and Astronomy, Astronomy and Astrophysics, Weinberg angle, Electron, Polarization (waves), Asymmetry, Nuclear physics, Cathode ray, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, media_common
Abstract

We present the first measurement of the left-right cross-section asymmetry (ALR) in Z-boson production observed at the SLAC Linear Collider. In 1992 the SLD detector recorded 10 224 Z events produced by the collision of longitudinally polarized electrons with an unpolarized positron beam at a center-of-mass energy of 91.55 GeV. The average electron beam polarization during the run was (22.4 ± 0.6)%. We measure ALR to be 0.100 ± 0.0440 (stat.) ±0.004 (syst.), which determines the effective weak mixing angle to be $\sin^2\theta_W^{\rm {eff}} = 0.2378\pm 0.0056\, ({\rm stat.})\pm 0.0005\, ({\rm syst.})$.

Published
1993

5. 3He spin-dependent cross sections and sum rules.

Author

Slifer K, Amarian M, Auerbach L, Averett T, Berthot J, Bertin P, Bertozzi B, Black T, Brash E, Brown D, Burtin E, Calarco J, Cates G, Chai Z, Chen JP, Choi S, Chudakov E, Ciofi Degli Atti C, Cisbani E, de Jager CW, Deur A, DiSalvo R, Dieterich S, Djawotho P, Finn M, Fissum K, Fonvieille H, Frullani S, Gao H, Gao J, Garibaldi F, Gasparian A, Gilad S, Gilman R, Glamazdin A, Glashausser C, Glöckle W, Golak J, Goldberg E, Gomez J, Gorbenko V, Hansen JO, Hersman B, Holmes R, Huber GM, Hughes E, Humensky B, Incerti S, Iodice M, Jensen S, Jiang X, Jones C, Jones G, Jones M, Jutier C, Kamada H, Ketikyan A, Kominis I, Korsch W, Kramer K, Kumar K, Kumbartzki G, Kuss M, Lakuriqi E, Laveissiere G, Lerose JJ, Liang M, Liyanage N, Lolos G, Malov S, Marroncle J, McCormick K, McKeown RD, Meziani ZE, Michaels R, Mitchell J, Nogga A, Pace E, Papandreou Z, Pavlin T, Petratos GG, Pripstein D, Prout D, Ransome R, Roblin Y, Rowntree D, Rvachev M, Sabatié F, Saha A, Salmè G, Scopetta S, Skibiński R, Souder P, Saito T, Strauch S, Suleiman R, Takahashi K, Teijiro S, Todor L, Tsubota H, Ueno H, Urciuoli G, Van der Meer R, Vernin P, Voskanian H, Witała H, Wojtsekhowski B, Xiong F, Xu W, Yang JC, Zhang B, and Zolnierczuk P

Abstract

We present a measurement of the spin-dependent cross sections for the 3He over -->(e over -->,e')X reaction in the quasielastic and resonance regions at a four-momentum transfer 0.1< or =Q2< or =0.9 GeV2. The spin-structure functions have been extracted and used to evaluate the nuclear Burkhardt-Cottingham and extended Gerasimov-Drell-Hearn sum rules for the first time. The data are also compared to an impulse approximation calculation and an exact three-body Faddeev calculation in the quasielastic region.

Published
2008
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6. Measurement of the generalized forward spin polarizabilities of the neutron.

Author

Amarian M, Auerbach L, Averett T, Berthot J, Bertin P, Bertozzi W, Black T, Brash E, Brown D, Burtin E, Calarco J, Cates G, Chai Z, Chen JP, Choi S, Chudakov E, Cisbani E, de Jager CW, Deur A, DiSalvo R, Dieterich S, Djawotho P, Finn JM, Fissum K, Fonvieille H, Frullani S, Gao H, Gao J, Garibaldi F, Gasparian A, Gilad S, Gilman R, Glamazdin A, Glashausser C, Goldberg E, Gomez J, Gorbenko V, Hansen JO, Hersman B, Holmes R, Huber GM, Hughes E, Humensky B, Incerti S, Iodice M, Jensen S, Jiang X, Jones C, Jones G, Jones M, Jutier C, Ketikyan A, Kominis I, Korsch W, Kramer K, Kumar K, Kumbartzki G, Kuss M, Lakuriqi E, Laveissiere G, Lerose J, Liang M, Liyanage N, Lolos G, Malov S, Marroncle J, McCormick K, McKeown R, Meziani ZE, Michaels R, Mitchell J, Papandreou Z, Pavlin T, Petratos GG, Pripstein D, Prout D, Ransome R, Roblin Y, Rowntree D, Rvachev M, Sabatie F, Saha A, Slifer K, Souder P, Saito T, Strauch S, Suleiman R, Takahashi K, Teijiro S, Todor L, Tsubota H, Ueno H, Urciuoli G, Van der Meer R, Vernin P, Voskanian H, Wojtsekhowski B, Xiong F, Xu W, Yang JC, Zhang B, and Zołnierczuk PA

Abstract

The generalized forward spin polarizabilities gamma(0) and delta(LT) of the neutron have been extracted for the first time in a Q2 range from 0.1 to 0.9 GeV2. Since gamma(0) is sensitive to nucleon resonances and delta(LT) is insensitive to the Delta resonance, it is expected that the pair of forward spin polarizabilities should provide benchmark tests of the current understanding of the chiral dynamics of QCD. The new results on delta(LT) show significant disagreement with chiral perturbation theory calculations, while the data for gamma(0) at low Q2 are in good agreement with a next-to-leading-order relativistic baryon chiral perturbation theory calculation. The data show good agreement with the phenomenological MAID model.

Published
2004
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7. Q2 evolution of the neutron spin structure moments using a 3He target.

Author

Amarian M, Auerbach L, Averett T, Berthot J, Bertin P, Bertozzi B, Black T, Brash E, Brown D, Burtin E, Calarco J, Cates G, Chai Z, Chen JP, Choi S, Chudakov E, Cisbani E, De Jager CW, Deur A, DiSalvo R, Dieterich S, Djawotho P, Finn M, Fissum K, Fonvieille H, Frullani S, Gao H, Gao J, Garibaldi F, Gasparian A, Gilad S, Gilman R, Glamazdin A, Glashausser C, Goldberg E, Gomez J, Gorbenko V, Hansen JO, Hersman B, Holmes R, Huber GM, Hughes E, Humensky B, Incerti S, Iodice M, Jensen S, Jiang X, Jones C, Jones G, Jones M, Jutier C, Ketikyan A, Kominis I, Korsch W, Kramer K, Kumar K, Kumbartzki G, Kuss M, Lakuriqi E, Laveissiere G, Lerose J, Liang M, Liyanage N, Lolos G, Malov S, Marroncle J, McCormick K, McKeown R, Meziani ZE, Michaels R, Mitchell J, Papandreou Z, Pavlin T, Petratos GG, Pripstein D, Prout D, Ransome R, Roblin Y, Rowntree D, Rvachev M, Sabatie F, Saha A, Slifer K, Souder P, Saito T, Strauch S, Suleiman R, Takahashi K, Teijiro S, Todor L, Tsubota H, Ueno H, Urciuoli G, Van Der Meer R, Vernin P, Voskanian H, Wojtsekhowski B, Xiong F, Xu W, Yang JC, Zhang B, and Zolnierczuk P

Abstract

We have measured the spin structure functions g(1) and g(2) of 3He in a double-spin experiment by inclusively scattering polarized electrons at energies ranging from 0.862 to 5.058 GeV off a polarized 3He target at a 15.5 degrees scattering angle. Excitation energies covered the resonance and the onset of the deep inelastic regions. We have determined for the first time the Q2 evolution of Gamma(1)(Q2)= integral (1)(0)g(1)(x,Q2)dx, Gamma(2)(Q2)= integral (1)(0)g(2)(x,Q2)dx, and d(2)(Q2)= integral (1)(0)x(2)[2g(1)(x,Q2)+3g(2)(x,Q2)]dx for the neutron in the range 0.1< or =Q2< or =0.9 GeV2 with good precision. Gamma(1)(Q2) displays a smooth variation from high to low Q2. The Burkhardt-Cottingham sum rule holds within uncertainties and d(2) is nonzero over the measured range.

Published
2004
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8. Q2 evolution of the generalized Gerasimov-Drell-Hearn integral for the neutron using a 3He target.

Author

Amarian M, Auerbach L, Averett T, Berthot J, Bertin P, Bertozzi W, Black T, Brash E, Brown D, Burtin E, Calarco JR, Cates GD, Chai Z, Chen JP, Choi S, Chudakov E, Cisbani E, De Jager CW, Deur A, DiSalvo R, Dieterich S, Djawotho P, Finn M, Fissum K, Fonvieille H, Frullani S, Gao H, Gao J, Garibaldi F, Gasparian A, Gilad S, Gilman R, Glamazdin A, Glashausser C, Goldberg E, Gomez J, Gorbenko V, Hansen JO, Hersman FW, Holmes R, Huber GM, Hughes EW, Humensky TB, Incerti S, Iodice M, Jensen S, Jiang X, Jones C, Jones GM, Jones M, Jutier C, Ketikyan A, Kominis I, Korsch W, Kramer K, Kumar KS, Kumbartzki G, Kuss M, Lakuriqi E, Laveissiere G, Lerose J, Liang M, Liyanage N, Lolos G, Malov S, Marroncle J, McCormick K, McKeown R, Meziani ZE, Michaels R, Mitchell J, Papandreou Z, Pavlin T, Petratos GG, Pripstein D, Prout D, Ransome R, Roblin Y, Rowntree D, Rvachev M, Sabatie F, Saha A, Slifer K, Souder PA, Saito T, Strauch S, Suleiman R, Takahashi K, Teijiro S, Todor L, Tsubota H, Ueno H, Urciuoli G, Van Der Meer R, Vernin P, Voskanian H, Wojtsekhowski B, Xiong F, Xu W, Yang JC, Zhang B, and Zolnierczuk P

Abstract

We present data on the inclusive scattering of polarized electrons from a polarized 3He target at energies from 0.862 to 5.06 GeV, obtained at a scattering angle of 15.5 degrees. Our data include measurements from the quasielastic peak, through the nucleon resonance region, and beyond, and were used to determine the virtual photon cross-section difference sigma(1/2)-sigma(3/2). We extract the extended Gerasimov-Drell-Hearn integral for the neutron in the range of four-momentum transfer squared Q2 of 0.1-0.9 GeV2.

Published
2002
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9. Precision measurement of the spin-dependent asymmetry in the threshold region of 3He(e, e').

Author

Xiong F, Dutta D, Xu W, Anderson B, Auberbach L, Averett T, Bertozzi W, Black T, Calarco J, Cardman L, Cates GD, Chai ZW, Chen JP, Choi S, Chudakov E, Churchwell S, Corrado GS, Crawford C, Dale D, Deur A, Djawotho P, Filippone BW, Finn JM, Gao H, Gilman R, Glamazdin AV, Glashausser C, Glöckle W, Golak J, Gomez J, Gorbenko VG, Hansen JO, Hersman FW, Higinbotham DW, Holmes R, Howell CR, Hughes E, Humensky B, Incerti S, de Jager CW, Jensen JS, Jiang X, Jones CE, Jones M, Kahl R, Kamada H, Kievsky A, Kominis I, Korsch W, Kramer K, Kumbartzki G, Kuss M, Lakuriqi E, Liang M, Liyanage N, LeRose J, Malov S, Margaziotis DJ, Martin JW, McCormick K, McKeown RD, McIlhany K, Meziani ZE, Michaels R, Miller GW, Pace E, Pavlin T, Petratos GG, Pomatsalyuk RI, Pripstein D, Prout D, Ransome RD, Roblin Y, Rvachev M, Saha A, Salmè G, Schnee M, Shin T, Slifer K, Souder PA, Strauch S, Suleiman R, Sutter M, Tipton B, Todor L, Viviani M, Vlahovic B, Watson J, Williamson CF, Witała H, Wojtsekhowski B, Yeh J, and Zołnierczuk P

Abstract

We present the first precision measurement of the spin-dependent asymmetry in the threshold region of 3He(e,e') at Q2 values of 0.1 and 0.2 (GeV/c)2. The agreement between the data and nonrelativistic Faddeev calculations which include both final-state interactions and meson-exchange current effects is very good at Q2 = 0.1 (GeV/c)2, while a small discrepancy at Q2 = 0.2 (GeV/c)2 is observed.

Published
2001
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10. Transverse asymmetry AT' from the quasielastic 3He(e,e') process and the neutron magnetic form factor.

Author

Xu W, Dutta D, Xiong F, Anderson B, Auberbach L, Averett T, Bertozzi W, Black T, Calarco J, Cardman L, Cates GD, Chai ZW, Chen JP, Choi S, Chudakov E, Churchwell S, Corrado GS, Crawford C, Dale D, Deur A, Djawotho P, Filippone BW, Finn JM, Gao H, Gilman R, Glamazdin AV, Glashausser C, Glöckle W, Golak J, Gomez J, Gorbenko VG, Hansen JO, Hersman FW, Higinbotham DW, Holmes R, Howell CR, Hughes E, Humensky B, Incerti S, de Jager CW, Jensen JS, Jiang X, Jones CE, Jones M, Kahl R, Kamada H, Kievsky A, Kominis I, Korsch W, Kramer K, Kumbartzki G, Kuss M, Lakuriqi E, Liang M, Liyanage N, LeRose J, Malov S, Margaziotis DJ, Martin JW, McCormick K, McKeown RD, McIlhany K, Meziani ZE, Michaels R, Miller GW, Pace E, Pavlin T, Petratos GG, Pomatsalyuk RI, Pripstein D, Prout D, Ransome RD, Roblin Y, Rvachev M, Saha A, Salmè G, Schnee M, Shin T, Slifer K, Souder PA, Strauch S, Suleiman R, Sutter M, Tipton B, Todor L, Viviani M, Vlahovic B, Watson J, Williamson CF, Witała H, Wojtsekhowski B, Yeh J, and Zołnierczuk P

Abstract

We have measured the transverse asymmetry A(T') in 3He(e,e(')) quasielastic scattering in Hall A at Jefferson Laboratory with high precision for Q2 values from 0.1 to 0.6 (GeV/c)(2). The neutron magnetic form factor G(n)(M) was extracted based on Faddeev calculations for Q2 = 0.1 and 0.2 (GeV/c)(2) with an experimental uncertainty of less than 2%.

Published
2000
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11. Erratum: Measurement of J/ psi and psi ' production in 800 GeV/c proton-gold collisions

Author

Schub MH, Jansen DM, Mishra CS, Ho PM, Brown CN, Carey TA, Chen YC, Childers R, Cooper WE, Darden CW, Gidal G, Gounder KN, Isenhower LD, Jeppesen RG, Kaplan DM, Kapustinsky JS, Kiang GC, Kowitt MS, Lane DW, Lederman LM, Leitch MJ, Lillberg JW, Luebke WR, Luk KB, McGaughey PL, Moss JM, Peng JC, Preston RS, Pripstein D, Sa J, Sadler ME, Schnathorst R, Tanikella V V, Teng PK, and Wilson JR

Published
1996
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12. Measurement of J/ psi and psi ' production in 800 GeV/c proton-gold collisions.

Author

Schub MH, Jansen DM, Mishra CS, Ho PM, Brown CN, Carey TA, Chen YC, Childers R, Cooper WE, Darden CW, Gidal G, Gounder KN, Isenhower LD, Jeppesen RG, Kaplan DM, Kapustinsky JS, Kiang GC, Kowitt MS, Lane DW, Lederman LM, Leitch MJ, Lillberg JW, Luebke WR, Luk KB, McGaughey PL, Moss JM, Peng JC, Preston RS, Pripstein D, Sa J, Sadler ME, Schnathorst R, Tanikella V V, Teng PK, and Wilson JR

Published
1995
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13. Measurement of the bottom-quark production cross section in 800 GeV/c proton-gold collisions.

Author

Jansen DM, Schub MH, Mishra CS, Ho PM, Brown CN, Carey TA, Chen YC, Childers R, Cooper WE, Darden CW, Gidal G, Gounder KN, Isenhower LD, Jeppesen RG, Kaplan DM, Kapustinsky JS, Kiang GC, Kowitt MS, Lane DW, Lederman LM, Leitch MJ, Lillberg JW, Luebke WR, Luk KB, McGaughey PL, Moss JM, Peng JC, Preston RS, Pripstein D, Sa J, Sadler ME, Schnathorst R, Tanikella V V, Teng PK, and Wilson JR

Published
1995
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14. Nuclear dependence of neutral-D-meson production by 800 GeV/c protons.

Author

Leitch MJ, Boissevain J, Carey TA, Jansen DM, Jeppesen RG, Kapustinsky JS, Lane DW, Lillberg JW, McGaughey PL, Moss JM, Peng JC, Isenhower LD, Sadler ME, Schnathorst R, Gidal G, Ho PM, Kowitt MS, Luk KB, Pripstein D, Lederman LM, Schub MH, Brown CN, Cooper WE, Glass HD, Gounder KN, Mishra CS, Kaplan DM, Luebke WR, Martin VM, Preston RS, Sa J, Tanikella V V, Childers R, Darden CW, Wilson JR, Chen YC, Kiang GC, and Teng PK

Published
1994
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15. Production of J/ psi at large xF in 800 GeV/c p-copper and p-beryllium collisions.

Author

Kowitt MS, Gidal G, Ho PM, Luk KB, Pripstein D, Isenhower LD, Sadler ME, Schnathorst R, Schwindt R, Lederman LM, Schub MH, Brown CN, Cooper WE, Glass HD, Gounder KN, Mishra CS, Boissevain J, Carey TA, Jansen DM, Jeppesen RG, Kapustinsky JS, Lane DW, Leitch MJ, Lillberg JW, McGaughey PL, Moss JM, Peng JC, Kaplan DM, Luebke WR, Martin VM, Preston RS, Sa J, Tanikella V V, Childers RL, Darden CW, Wilson JR, Kiang GC, Teng PK, and Chen YC

Published
1994
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