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151. David I (c. 1085–1153), king of Scots

Author: G. W. S. Barrow
Published: 2004

152. Fraser, Sir William (1816–1898), genealogist and archivist

Author: G. W. S. Barrow
Published: 2004

153. Survey of A_LT' asymmetries in semi-exclusive electron scattering on He4 and C12

Author: L. Elouadrhiri, J. Kuhn, V. Sapunenko, Valeria Muccifora, Roy Thompson, R. Fatemi, D. Doughty, P. Dragovitsch, M. Battaglieri, Gerard Gilfoyle, D. Heddle, A. V. Vlassov, T. Lee, J. R. Calarco, S. Niccolai, R. Bradford, Y.G. Sharabian, M. Osipenko, F. Sabatié, B. M. Preedom, Shalev Gilad, R. A. Miskimen, J. Hardie, H. G. Juengst, W. K. Brooks, K. Beard, Ji Li, Lorenzo Zana, J. P. Santoro, M. D. Mestayer, G. Ricco, Kalvir S. Dhuga, Michael L. Williams, M. Guidal, S. Boiarinov, A. I. Ostrovidov, E. Wolin, K. Wang, D. Branford, Dimitri Debruyne, C. Salgado, M. M. Ito, G. Gavalian, J. J. Manak, D. G. Ireland, R. C. Minehart, J. P. Ball, S. Stepanyan, M. Mirazita, J. M. Laget, Y. Prok, I. Hleiqawi, S. Simionatto, Volker D. Burkert, A. S. Biselli, G. E. Dodge, C. A. Meyer, D. Protopopescu, M. Holtrop, Bernhard Mecking, A.V. Stavinsky, K. S. Egiyan, P. Eugenio, M. Taiuti, Cynthia Marie Hadjidakis, C. Cetina, K. A. Griffioen, Michael Vineyard, L. Todor, W. Ingram, K. V. Dharmawardane, K. L. Giovanetti, B. Asavapibhop, Friedrich Klein, S. Pozdniakov, P. V. Degtyarenko, A. Tkabladze, Michael Dugger, Brian Raue, D. G. Crabb, M. Spraker, Larry Weinstein, William Bertozzi, E. Anciant, M. Guillo, D. J. Tedeschi, K. Mikhailov, D. P. Weygand, H. O. Funsten, E. De Sanctis, J. D. Kellie, A. Coleman, H. R. Weller, B. Carnahan, I. Niculescu, Sylvain Bouchigny, W. Kim, S. McAleer, G. Niculescu, M. Khandaker, R. J. Feuerbach, D. I. Sober, D. Lawrence, J. J. Melone, Daniel S. Carman, Alexei V. Klimenko, P. Rossi, G. Rosner, Laird Kramer, G. Audit, Thierry Auger, C. E. Hyde-Wright, Barry Ritchie, R. A. Schumacher, L. C. Smith, Susan Taylor, S. Strauch, H. Egiyan, Federico Ronchetti, C. I O Gordon, Kwangsoo Kim, G. Riccardi, J. Hu, G. S. Mutchler, G. Asryan, Nicola Bianchi, C. Butuceanu, S. McLauchlan, B. E. Stokes, G. S. Adams, K. Joo, L. Morand, T. A. Forest, K. Livingston, O. P. Dzyubak, R. A. Niyazov, C. S. Whisnant, B. L. Berman, N. Guler, U. Thoma, Avraham Klein, G. A. Peterson, A. V. Skabelin, M. Bektasoglu, L. M. Qin, F. W. Hersman, P. Corvisiero, P. L. Cole, S. Barrow, M. Nozar, Hall Crannell, M. Klusman, C. Marchand, N. Benmouna, M. Ripani, L. Guo, M. Ungaro, R. DeVita, P. Stoler, J. W C McNabb, J. Langheinrich, S. A. Philips, J. W. Price, S. O. Nelson, K. Hicks, R. W. Gothe, K. Y. Kim, J. Yun, D. Cords, A. Yegneswaran, G. V. O'Rielly, V. Gyurjyan, D. G. Jenkins, K. Sabourov, H. Bagdasaryan, B. B. Niczyporuk, N. Pivnyuk, J. Napolitano, S. A. Morrow, C. Djalali, P. Ambrozewicz, J. Lachniet, Jan Ryckebusch, D. Rowntree, R. S. Hakobyan, Patrick Girard, J. Shaw, Michael Wood, Baile Zhang, V. S. Serov, Shifeng Chen, M. Bellis, K. Park, E. Polli, Elton Smith, A. Empl, O. Pogorelko, M. Anghinolfi, K. Lukashin, L. C. Dennis, B. E. Bonner, James Mueller, H. Avakian, P. D. Rubin, J. P. Cummings, M. Kossov, Dinko Pocanic, W. J. Briscoe, E. Pasyuk, S. A. Dytman, Rakhsha Nasseripour, S. E. Kuhn, J. H. Kelley, C. Tur, Institut de Physique Nucléaire d'Orsay (IPNO), 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 CLAS
Subjects: Nuclear reaction, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, FOS: Physical sciences, Comparisons with model predictions, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 4He, single spin azimuthal asymmetries vs missing momentum, 01 natural sciences, NUCLEON EMISSION, missing energy, Nuclear physics, 12C (polarised e, deduced, 0103 physical sciences, e′p), Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Spin-½, Physics, NUCLEAR REACTIONS, POLARIZED ELECTRONS, E'P REACTIONS, 010308 nuclear & particles physics, Scattering, POLARIZED ELECTRONS, NUCLEON EMISSION, E'P REACTIONS, KNOCKOUT, Helicity, Eikonal approximation, KNOCKOUT, 24.70.+s, 25.30.Dh, 27.10.+h, measured, final state interaction effects, High Energy Physics::Experiment, Nucleon, Glauber, Electron scattering, E=2.261, 4.461 GeV
Abstract: Single spin azimuthal asymmetries A_LT' were measured at Jefferson Lab using 2.2 and 4.4 GeV longitudinally polarized electrons incident on He4 and C12 targets in the CLAS detector. A_LT' is related to the imaginary part of the longitudinal-transverse interference and in quasifree nucleon knockout it provides an unambiguous signature for final state interactions (FSI). Experimental values of A_LT' were found to be below 5%, typically |A_LT'| < 3% for data with good statistical precision. Optical Model in Eikonal Approximation (OMEA) and Relativistic Multiple-Scattering Glauber Approximation (RMSGA) calculations are shown to be consistent with the measured asymmetries., 9 pages, 5 figures
Published: 2004

154. Onset of asymptotic scaling in deuteron photodisintegration

Author: P. Rossi, M. Mirazita, F. Ronchetti, E. De Sanctis, G. Adams, P. Ambrozewicz, E. Anciant, M. Anghinolfi, B. Asavapibhop, G. Audit, H. Avakian, H. Bagdasaryan, J. P. Ball, S. Barrow, M. Battaglieri, K. Beard, M. Bektasoglu, M. Bellis, N. Benmouna, B. L. Berman, W. Bertozzi, N. Bianchi, A. S. Biselli, S. Boiarinov, B. E. Bonner, S. Bouchigny, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, C. Butuceanu, J. R. Calarco, D. S. Carman, B. Carnahan, S. Chen, P. L. Cole, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, R. De Vita, P. V. Degtyarenko, H. Denizli, L. Dennis, A. Deppman, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, R. Fatemi, R. J. Feuerbach, J. Ficenec, T. A. Forest, H. Funsten, M. Gai, G. Gavalian, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, C. I. O. Gordon, K. Griffioen, M. Guidal, M. Guillo, L. Guo, V. Gyurjyan, C. Hadjidakis, R. S. Hakobyan, J. Hardie, D. Heddle, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, Y. Ilieva, M. M. Ito, D. Jenkins, H. S. Jo, K. Joo, J. D. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Klusman, M. Kossov, L. H. Kramer, J. Kuhn, S. E. Kuhn, J. Lachniet, J. M. Laget, D. Lawrence, Ji Li, A. C. S. Lima, K. Livingston, K. Lukashin, J. J. Manak, C. Marchand, S. McAleer, J. McCarthy, J. W. C. McNabb, B. A. Mecking, S. Mehrabyan, J. J. Melone, M. D. Mestayer, C. A. Meyer, K. Mikhailov, R. Miskimen, V. Mokeev, L. Morand, S. A. Morrow, V. Muccifora, J. Mueller, G. S. Mutchler, J. Napolitano, R. Nasseripour, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, M. Nozar, J. T. O'Brien, G. V. O'Rielly, M. Osipenko, A. Ostrovidov, K. Park, E. Pasyuk, G. Peterson, S. A. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, S. Pozdniakov, B. M. Preedom, J. W. Price, Y. Prok, D. Protopopescu, L. M. Qin, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, G. Rosner, D. Rowntree, P. D. Rubin, F. Sabatié, C. Salgado, J. P. Santoro, V. Sapunenko, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, J. Shaw, S. Simionatto, A. V. Skabelin, E. S. Smith, L. C. Smith, D. I. Sober, M. Spraker, A. Stavinsky, S. Stepanyan, B. Stokes, P. Stoler, I. I. Strakovsky, S. Strauch, M. Taiuti, S. Taylor, D. J. Tedeschi, U. Thoma, R. Thompson, A. Tkabladze, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, K. Wang, L. B. Weinstein, H. Weller, D. P. Weygand, C. S. Whisnant, E. Wolin, M. H. Wood, A. Yegneswaran, J. Yun, B. Zhang, and Z. Zhou
Subjects: Physics, Proton, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Strong interaction, 2-BODY PHOTODISINTEGRATION, FOS: Physical sciences, General Physics and Astronomy, Photon energy, High Energy Physics - Experiment, Nuclear physics, Momentum, Baryon, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Photodisintegration, High Energy Physics::Experiment, Nuclear Experiment (nucl-ex), Atomic physics, Nuclear Experiment, Nucleon
Abstract: We investigate the transition from the nucleon-meson to quark-gluon description of the strong interaction using the photon energy dependence of the $d(\gamma,p)n$ differential cross section for photon energies above 0.5 GeV and center-of-mass proton angles between $30^{\circ}$ and $150^{\circ}$. A possible signature for this transition is the onset of cross section $s^{-11}$ scaling with the total energy squared, $s$, at some proton transverse momentum, $P_T$. The results show that the scaling has been reached for proton transverse momentum above about 1.1 GeV/c. This may indicate that the quark-gluon regime is reached above this momentum., Comment: Accepted by PRL; 5 pages, 2 figures
Published: 2004

155. Tensor polarization of theϕmeson photoproduced at hight

Author: J. P. Cummings, M. Kossov, J. Langheinrich, M. Bektasoglu, Rakhsha Nasseripour, S. A. Philips, P. Dragovitsch, Jing Zhao, Daniel S. Carman, P. Stoler, M. Osipenko, K. Beard, G. Audit, C. E. Hyde-Wright, J. Lachniet, Dinko Pocanic, S. Niccolai, S. E. Kuhn, L. C. Dennis, S. O. Nelson, K. Hicks, J. H. Kelley, C. Tur, D. Rowntree, B. E. Bonner, Hall Crannell, Susan Taylor, S. McAleer, J. Hardie, G. Gavalian, M. Guillo, J. Kuhn, H. Egiyan, H. Avakian, B. M. Preedom, W. Major, R. S. Hakobyan, O. P. Dzyubak, R. A. Niyazov, C. Marchand, M. Guidal, G. Niculescu, Roy Thompson, R. A. Schumacher, R. A. Miskimen, M. Holtrop, H. G. Juengst, P. Corvisiero, E. Anciant, C. S. Whisnant, J. P. Santoro, C. I O Gordon, G. A. Peterson, D. J. Tedeschi, W. Kim, K. S. Egiyan, F. W. Hersman, E. Pasyuk, S. Barrow, L. Morand, T. A. Forest, M. Mirazita, J. M. Laget, P. Eugenio, M. Taiuti, S. A. Dytman, B. Carnahan, F. Sabatié, M. Khandaker, R. J. Feuerbach, K. Wang, T. Smith, C. Salgado, L. Farhi, Thierry Auger, Volker D. Burkert, A. S. Biselli, U. Thoma, Avraham Klein, G. S. Adams, D. Hancock, G. Ricco, K. Joo, G. E. Dodge, Patrick Girard, B. L. Berman, J. Shaw, V. Gyurjyan, D. Doughty, Nicola Bianchi, Michael Wood, V. Sapunenko, L. M. Qin, Valeria Muccifora, Philip L. Cole, P. V. Degtyarenko, V. S. Serov, Laird Kramer, A. Coleman, D. Heddle, H. R. Weller, C. Cetina, Gerard Gilfoyle, L. Todor, Moshe Gai, M. Klusman, Michael Vineyard, M. Bellis, K. Park, D. Protopopescu, M. Garçon, J. W. Price, I. Niculescu, Z. L. Zhou, H. Bagdasaryan, J. J. Melone, D. Lawrence, Friedrich Klein, R. S. Hicks, Brian Raue, A. Shafi, Ji Li, L. Guo, M. Ungaro, M. D. Mestayer, O. Pogorelko, W. K. Brooks, F. Ronchetti, V. Frolov, S. Boiarinov, J. Yun, D. Cords, K. L. Giovanetti, B. Asavapibhop, M. Spraker, Larry Weinstein, A. Yegneswaran, L. C. Smith, S. J. Gaff, D. G. Jenkins, K. Sabourov, Cynthia Marie Hadjidakis, Michael Dugger, M. Nozar, E. De Sanctis, H. O. Funsten, M. M. Ito, D. I. Sober, A. V. Vlassov, J. J. Manak, S. Mehrabyan, Elton Smith, J. R. Ficenec, M. Anghinolfi, James Mueller, K. McCormick, P. D. Rubin, Y. G. Sharabian, C. Butuceanu, Shifeng Chen, E. Wolin, Y. Kuang, E. Polli, J. P. Ball, Y. Prok, M. Eckhause, M. Sargsyan, Latifa Elouadrhiri, D. G. Crabb, R. C. Minehart, C. A. Meyer, D. P. Weygand, N. Benmouna, M. Ripani, H. Denizli, J. Connelly, A. V. Skabelin, Alexei V. Klimenko, Barry Ritchie, M. Battaglieri, R. Bradford, K. Lukashin, S. Strauch, J. R. Calarco, M. Witkowski, Bernhard Mecking, K. V. Dharmawardane, G. S. Mutchler, K. A. Griffioen, S. Stepanyan, Sylvain Bouchigny, P. Rossi, G. Riccardi, R. DeVita, J. W C McNabb, S. A. Morrow, C. Djalali, Shalev Gilad, P. Ambrozewicz, M. Sanzone-Arenhovel, B. B. Niczyporuk, N. Pivnyuk, and J. Napolitano
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Momentum transfer, Hadron, Quarkonium, Phi meson, 01 natural sciences, Helicity, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: As part of a measurement [E. Anciant et al., Phys. Rev. Lett. 85, 4682 (2000)] of the cross section of phi meson photoproduction to high momentum transfer, we measured the polar angular decay distribution of the outgoing K+ in the channel K+K- in the phi center-of-mass frame (the helicity frame). We find that phi s-channel helicity conservation (SCHC) holds in the kinematical range where t-channel exchange dominates (up to -t {approx}2.5 GeV2 for E = 3.6 GeV). Above this momentum, phi u-channel production of a meson dominates and induces a violation of SCHC. The deduced value of the phi NN coupling constant lies in the upper range of previously reported values.
Published: 2004

156. Publisher’s Note: Two-Nucleon Momentum Distributions Measured inHe3(e,e′pp)n[Phys. Rev. Lett.PRLTAO0031-900792, 052303 (2004)]

Author: K. A. Griffioen, Shifeng Chen, G. Gavalian, S. McAleer, Y. Kuang, J. Langheinrich, Cynthia Marie Hadjidakis, S. A. Philips, E. Wolin, E. Polli, Michael Dugger, R. DeVita, H. O. Funsten, J. W C McNabb, S. Strauch, J. P. Ball, Y. Prok, P. L. Cole, D. S. Carman, Dinko Pocanic, V. Gyurjyan, H. Bagdasaryan, J. W. Price, Min Suk Kim, J. R. Calarco, R. A. Schumacher, Frank Klein, S. E. Kuhn, J. P. Cummings, J. Hu, C. A. Meyer, G. S. Mutchler, J. H. Kelley, Stephen Taylor, R. Fatemi, Carlos A. Salgado, C. I O Gordon, Patrick Girard, J. Shaw, Federico Ronchetti, G. Audit, C. E. Hyde-Wright, S. A. Morrow, P. Rubin, M. Eckhause, C. Djalali, A. V. Vlassov, D. G. Crabb, L. Ciciani, M. Nozar, Michael Wood, G. V. O'Rielly, R. J. Feuerbach, J. Lachniet, L. Morand, D. Rowntree, M. Kossov, T. A. Forest, V. S. Serov, G. Ricco, S. Stepanyan, P. Ambrozewicz, H. Juengst, M. Osipenko, J. R. Ficenec, M. Bektasoglu, Rakhsha Nasseripour, N. Dashyan, D. G. Jenkins, M. Bellis, K. Sabourov, M. Anghinolfi, K. Park, Shalev Gilad, S. Simionatto, E. S. Smith, James Mueller, K. Beard, R. S. Hakobyan, E. De Sanctis, P. Eugenio, L. C. Smith, B. Carnahan, G. E. Dodge, F. Sabatié, D. P. Weygand, M. Guidal, Y. G. Sharabian, Sylvain Bouchigny, Yordanka Ilieva, D. I. Sober, P. Dragovitsch, Ji Li, Brian Raue, P. Rossi, G. Niculescu, Daijin Kim, P. V. Degtyarenko, K. Kim, Volker D. Burkert, A. S. Biselli, B. B. Niczyporuk, W. Kim, M. Taiuti, N. Pivnyuk, K. L. Giovanetti, B. Asavapibhop, S. Niccolai, A. Empl, O. Pogorelko, M. Holtrop, M. D. Mestayer, J. J. Manak, Clarisse Tur, K. Lukashin, J. Napolitano, L. C. Dennis, I. Niculescu, D. Lawrence, Laird Kramer, Alexei V. Klimenko, Larry Weinstein, B. E. Bonner, Thierry Auger, J. Hardie, H. Avakian, G. Asryan, O. P. Dzyubak, R. A. Niyazov, N. Benmouna, M. Ripani, D. Doughty, K. V. Dharmawardane, S. Boiarinov, S. Mehrabyan, Barry Ritchie, D. Heddle, Kwangsoo Kim, G. Riccardi, William Brooks, Hall Crannell, C. Butuceanu, P. Corvisiero, M. Spraker, C. Cetina, Michael Vineyard, J. D. Kellie, K. S. Dhuga, C. Marchand, B. M. Preedom, J. J. Melone, William Bertozzi, E. Anciant, B. L. Berman, L. M. Qin, E. Pasyuk, M. Khandaker, K. Wang, J. P. Santoro, M. Klusman, S. A. Dytman, Roy Thompson, M. Battaglieri, P. Stoler, A. Coleman, S. O. Nelson, H. Denizli, H. R. Weller, K. Hicks, K. S. Egiyan, R. Bradford, B. A. Mecking, K. Mikhailov, A. V. Skabelin, M. M. Ito, H. Egiyan, S. McLauchlan, C. S. Whisnant, G. S. Adams, L. Todor, D. Protopopescu, S. Pozdniakov, A. Shafi, U. Thoma, Jens H. Kuhn, Nicola Bianchi, K. Livingston, W. Ingram, F. W. Hersman, G. A. Peterson, M. Guillo, S. Barrow, R. W. Gothe, L. Elouadrhiri, R. A. Miskimen, I. I. Strakovsky, L. Guo, M. Ungaro, K. Joo, D. Branford, J. Yun, D. Cords, A. Yegneswaran, M. Mirazita, J. M. Laget, V. Sapunenko, Valeria Muccifora, A.V. Stavinsky, D. J. Tedeschi, Gerard Gilfoyle, Andreas Klein, and Baile Zhang
Subjects: Physics, Momentum (technical analysis), General Physics and Astronomy, Few-body systems, Nucleon, Mathematical physics
Published: 2004

157. Two-Nucleon Momentum Distributions Measured inHe3(e,e′pp)n

Author: S. A. Morrow, C. Djalali, Ji Li, P. Ambrozewicz, M. D. Mestayer, E. Wolin, Susan Taylor, L. C. Smith, S. Strauch, P. Eugenio, M. Bellis, K. Park, S. McLauchlan, J. P. Ball, Y. Prok, H. Denizli, S. Boiarinov, M. Taiuti, M. Eckhause, G. S. Mutchler, C. S. Whisnant, Dinko Pocanic, G. S. Adams, Bernhard Mecking, K. V. Dharmawardane, Sylvain Bouchigny, R. Fatemi, G. Gavalian, Cynthia Marie Hadjidakis, P. Rossi, J. Hu, D. G. Crabb, A. V. Vlassov, A. V. Skabelin, Shalev Gilad, A. Empl, Michael Dugger, O. Pogorelko, H. O. Funsten, G. Riccardi, R. J. Feuerbach, S. E. Kuhn, M. Guidal, K. Lukashin, M. Battaglieri, G. Niculescu, Daijin Kim, J. R. Calarco, R. DeVita, J. W C McNabb, J. J. Manak, S. Mehrabyan, R. Bradford, Hall Crannell, Alexei V. Klimenko, P. Stoler, C. Cetina, Michael Vineyard, M. Holtrop, Barry Ritchie, J. H. Kelley, C. Marchand, J. P. Cummings, L. Guo, M. Ungaro, B. M. Preedom, C. Tur, S. O. Nelson, R. A. Schumacher, B. Carnahan, C. Butuceanu, F. Sabatié, L.C. Dennis, B. B. Niczyporuk, K. A. Griffioen, K. Hicks, M. M. Ito, Patrick Girard, J. Shaw, E. De Sanctis, M. Kossov, C. I O Gordon, U. Thoma, N. Dashyan, J. P. Santoro, J. Kuhn, N. Pivnyuk, M. Osipenko, Michael Wood, D. I. Sober, Rakhsha Nasseripour, K. S. Egiyan, Thierry Auger, J. Napolitano, Roy Thompson, J. Langheinrich, S. A. Philips, C. A. Meyer, K. Beard, L. Morand, T. A. Forest, V. S. Serov, B. E. Bonner, S. Stepanyan, Elton Smith, J. R. Ficenec, H. Avakian, K. Mikhailov, Kalvir S. Dhuga, K. Wang, G. V. O'Rielly, J. D. Kellie, Avraham Klein, R. W. Gothe, C. Salgado, G. E. Dodge, M. Anghinolfi, D. P. Weygand, Daniel S. Carman, P. V. Degtyarenko, K. Kim, James Mueller, B. L. Berman, G. Audit, C. E. Hyde-Wright, E. Pasyuk, L. M. Qin, S. A. Dytman, I. Niculescu, D. Lawrence, P. D. Rubin, N. Benmouna, M. Ripani, Y. G. Sharabian, G. Asryan, O. P. Dzyubak, R. A. Niyazov, M. Klusman, K. Joo, D. G. Jenkins, K. Sabourov, J. Yun, D. Cords, A. Coleman, Baile Zhang, H. R. Weller, P. Corvisiero, M. Nozar, K. Y. Kim, Shifeng Chen, A. Yegneswaran, Y. Kuang, S. McAleer, E. Polli, W. Ingram, V. Gyurjyan, Laird Kramer, H. Bagdasaryan, M. Guillo, Min Suk Kim, J. W. Price, L. Elouadrhiri, I. I. Strakovsky, J. Lachniet, F. W. Hersman, W. K. Brooks, D. Rowntree, M. Bektasoglu, R. S. Hakobyan, D. Doughty, Volker D. Burkert, A. S. Biselli, D. Heddle, William Bertozzi, Hovanes Egiyan, E. Anciant, V. Sapunenko, G. Ricco, Valeria Muccifora, Philip L. Cole, P. Dragovitsch, M. Khandaker, S. Niccolai, J. J. Melone, Friedrich Klein, J. Hardie, Gerard Gilfoyle, Brian Raue, A.V. Stavinsky, D. J. Tedeschi, L. Todor, R. A. Miskimen, H. G. Juengst, D. Protopopescu, L. Ciciani, Federico Ronchetti, D. Branford, S. Pozdniakov, S. Simionatto, M. Mirazita, J. M. Laget, K. L. Giovanetti, B. Asavapibhop, A. Shafi, M. Spraker, Larry Weinstein, Y. Ilieva, Nicola Bianchi, K. Livingston, G. A. Peterson, S. Barrow, and W. Kim
Subjects: Nuclear reaction, Physics, Particle physics, Nuclear Theory, Momentum transfer, General Physics and Astronomy, Kinetic energy, Nuclear physics, Momentum, Baryon, Pair production, Nuclear Experiment, Nucleon, Lepton
Abstract: We have measured the 3He(e,e'pp)n reaction at 2.2 GeV over a wide kinematic range. The kinetic energy distribution for ''fast'' nucleons (p > 250 MeV/c) peaks where two nucleons each have 20% or less, and the third nucleon has most of the transferred energy. These fast pp and pn pairs are back-to-back with little momentum along the three-momentum transfer, indicating that they are spectators. Experimental and theoretical evidence indicates that we have measured distorted two-nucleon momentum distributions by striking the third nucleon and detecting the spectator correlated pair.
Published: 2004

158. Publisher’s Note: Observation of an Exotic Baryon withS=+1in Photoproduction from the Proton [Phys. Rev. Lett.PRLTAO0031-900792, 032001 (2004)]

Author: K. Park, Clarisse Tur, Volker D. Burkert, A. K. Opper, Shifeng Chen, A. S. Biselli, M. Osipenko, U. Thoma, L. C. Smith, K. Beard, S. J. Gaff, R. W. Major, B. Carnahan, F. Sabatié, E. Polli, G. V. O'Rielly, B. M. Preedom, J. Lachniet, D. Rowntree, L. Elouadrhiri, V. Gyurjyan, J. P. Santoro, L. Ciciani, K. A. Griffioen, S. Simionatto, D. G. Jenkins, Roy Thompson, K. Sabourov, Thierry Auger, K. L. Giovanetti, B. Asavapibhop, Larry Weinstein, Dinko Pocanic, I. I. Strakovsky, G. Gavalian, V. Mokeev, R. S. Hakobyan, Brian Raue, S. E. Kuhn, K. Wang, R. C. Minehart, R. A. Miskimen, C. A. Meyer, J. Langheinrich, E. De Sanctis, V. V. Frolov, J. H. Kelley, Stephen Taylor, H. Bagdasaryan, S. A. Philips, G. S. Adams, F. W. Hersman, S. McAleer, G. A. Peterson, J. P. Cummings, O. P. Dzyubak, R. A. Niyazov, D. Branford, M. Mirazita, J. W. Price, L. Guo, M. Ungaro, S. Barrow, B. L. Berman, John T. O'Brien, W. Kim, M. Kossov, D. I. Sober, P. L. Cole, P. Dragovitsch, J. M. Laget, L. M. Qin, Laird Kramer, H. Egiyan, D. P. Weygand, P. Corvisiero, Alexei V. Klimenko, R. Fatemi, J. R. Ficenec, Rakhsha Nasseripour, L. Todor, D. Protopopescu, William Brooks, A. V. Vlassov, P. Eugenio, M. Taiuti, M. Anghinolfi, S. Strauch, S. Niccolai, Hall Crannell, S. Pozdniakov, M. Garçon, C. S. Whisnant, Federico Ronchetti, James Mueller, M. Spraker, C. Cetina, Frank Klein, G. S. Mutchler, Barry Ritchie, J. Hardie, Michael Vineyard, A. Longhi, J. R. Calarco, R. DeVita, J. W C McNabb, Y. G. Sharabian, R. W. Gothe, M. Guidal, M. Klusman, M. Guillo, N. Benmouna, A.V. Stavinsky, J. J. Melone, A. Weisberg, P. Stoler, J. Hu, K. Joo, C. Marchand, Ji Li, M. Ripani, G. Niculescu, Carlos A. Salgado, S. A. Morrow, P. Rubin, J. Yun, D. Cords, A. Shafi, M. D. Mestayer, P. Heimberg, C. Djalali, D. J. Tedeschi, A. Yegneswaran, Patrick Girard, J. J. Manak, J. Shaw, S. O. Nelson, K. Hicks, Michael Wood, S. Boiarinov, M. Holtrop, Thomas E. Smith, R. A. Schumacher, E. S. Smith, K. S. Egiyan, P. Ambrozewicz, V. S. Serov, K. Mikhailov, Cynthia Marie Hadjidakis, H. Denizli, Sylvain Bouchigny, H. Juengst, Michael Dugger, H. O. Funsten, C. I O Gordon, P. Rossi, L. Farhi, M. Nozar, M. Bellis, M. U. Mozer, L. Morand, T. A. Forest, S. Stepanyan, G. Audit, V. Sapunenko, G. E. Dodge, J. Connelly, A. V. Skabelin, K. V. Dharmawardane, R. J. Feuerbach, P. V. Degtyarenko, K. Kim, V. P. Kubarovsky, Valeria Muccifora, I. Niculescu, D. Lawrence, M. Bektasoglu, A. Empl, B. B. Niczyporuk, O. Pogorelko, D. Hancock, N. Pivnyuk, K. Lukashin, J. Napolitano, L. C. Dennis, Gerard Gilfoyle, Jens H. Kuhn, Nicola Bianchi, H. Avakian, M. M. Ito, W. J. Briscoe, M. Battaglieri, E. Pasyuk, S. A. Dytman, R. Bradford, B. A. Mecking, E. Anciant, M. Khandaker, D. Doughty, D. Heddle, Yordanka Ilieva, S. Mehrabyan, Kwangsoo Kim, G. Riccardi, C. Butuceanu, E. Wolin, J. P. Ball, Y. Prok, D. S. Carman, M. Sargsyan, and D. G. Crabb
Subjects: Nuclear physics, Physics, Particle physics, Proton, Exotic baryon, Hyperon, General Physics and Astronomy
Published: 2004

159. Two-Nucleon Momentum Distributions Measured in 3He(e,e'pp)n

Author: R A, Niyazov, L B, Weinstein, G, Adams, P, Ambrozewicz, E, Anciant, M, Anghinolfi, B, Asavapibhop, G, Asryan, G, Audit, T, Auger, H, Avakian, H, Bagdasaryan, J P, Ball, S, Barrow, M, Battaglieri, K, Beard, M, Bektasoglu, M, Bellis, N, Benmouna, B L, Berman, W, Bertozzi, N, Bianchi, A S, Biselli, S, Boiarinov, B E, Bonner, S, Bouchigny, R, Bradford, D, Branford, W K, Brooks, V D, Burkert, C, Butuceanu, J R, Calarco, D S, Carman, B, Carnahan, C, Cetina, S, Chen, L, Ciciani, P L, Cole, A, Coleman, D, Cords, P, Corvisiero, D, Crabb, H, Crannell, J P, Cummings, E, De Sanctis, N, Dashyan, R, DeVita, P V, Degtyarenko, H, Denizli, L, Dennis, K V, Dharmawardane, K S, Dhuga, C, Djalali, G E, Dodge, D, Doughty, P, Dragovitsch, M, Dugger, S, Dytman, O P, Dzyubak, M, Eckhause, H, Egiyan, K S, Egiyan, L, Elouadrhiri, A, Empl, P, Eugenio, R, Fatemi, R J, Feuerbach, J, Ficenec, T A, Forest, H, Funsten, G, Gavalian, S, Gilad, G P, Gilfoyle, K L, Giovanetti, P, Girard, C I O, Gordon, R W, Gothe, K, Griffioen, M, Guidal, M, Guillo, L, Guo, V, Gyurjyan, C, Hadjidakis, R S, Hakobyan, J, Hardie, D, Heddle, F W, Hersman, K, Hicks, M, Holtrop, J, Hu, C E, Hyde-Wright, Y, Ilieva, W, Ingram, M M, Ito, D, Jenkins, K, Joo, H G, Juengst, J H, Kelley, J, Kellie, M, Khandaker, D H, Kim, K Y, Kim, K, Kim, M S, Kim, W, Kim, A, Klein, F J, Klein, A V, Klimenko, M, Klusman, M, Kossov, L H, Kramer, Y, Kuang, S E, Kuhn, J, Kuhn, J, Lachniet, J M, Laget, J, Langheinrich, D, Lawrence, Ji, Li, K, Livingston, K, Lukashin, J J, Manak, C, Marchand, S, McAleer, S, McLauchlan, J W C, McNabb, B A, Mecking, S, Mehrabyan, J J, Melone, M D, Mestayer, C A, Meyer, K, Mikhailov, M, Mirazita, R, Miskimen, L, Morand, S A, Morrow, V, Muccifora, J, Mueller, G S, Mutchler, J, Napolitano, R, Nasseripour, S O, Nelson, S, Niccolai, G, Niculescu, I, Niculescu, B B, Niczyporuk, M, Nozar, G V, O'Rielly, M, Osipenko, K, Park, E, Pasyuk, G, Peterson, S A, Philips, N, Pivnyuk, D, Pocanic, O, Pogorelko, E, Polli, S, Pozdniakov, B M, Preedom, J W, Price, Y, Prok, D, Protopopescu, L M, Qin, B A, Raue, G, Riccardi, G, Ricco, M, Ripani, B G, Ritchie, F, Ronchetti, P, Rossi, D, Rowntree, P D, Rubin, F, Sabatié, K, Sabourov, C, Salgado, J P, Santoro, V, Sapunenko, R A, Schumacher, V S, Serov, A, Shafi, Y G, Sharabian, J, Shaw, S, Simionatto, A V, Skabelin, E S, Smith, L C, Smith, D I, Sober, M, Spraker, A, Stavinsky, S, Stepanyan, P, Stoler, I I, Strakovsky, S, Strauch, M, Taiuti, S, Taylor, D J, Tedeschi, U, Thoma, R, Thompson, L, Todor, C, Tur, M, Ungaro, M F, Vineyard, A V, Vlassov, K, Wang, H, Weller, D P, Weygand, C S, Whisnant, E, Wolin, M H, Wood, A, Yegneswaran, J, Yun, and B, Zhang
Subjects: SHORT-RANGE CORRELATIONS, KNOCKOUT, NUCLEI, HE-3, O-16, KNOCKOUT, NUCLEI, SHORT-RANGE CORRELATIONS, O-16, HE-3
Abstract: We have measured the 3He(e,e'pp)n reaction at 2.2 GeV over a wide kinematic range. The kinetic energy distribution for "fast" nucleons (p250 MeV/c) peaks where two nucleons each have 20% or less, and the third nucleon has most of the transferred energy. These fast pp and pn pairs are back to back with little momentum along the three-momentum transfer, indicating that they are spectators. Calculations by Sargsian and by Laget also indicate that we have measured distorted two-nucleon momentum distributions by striking one nucleon and detecting the spectator correlated pair.
Published: 2004

160. Proton Source Size Measurements in the eA->e'ppX Reaction

Author: A V, Stavinsky, K R, Mikhailov, R, Lednicky, A V, Vlassov, G, Adams, P, Ambrozewich, E, Anciant, M, Anghinolfi, B, Asavapibhop, G, Asryan, G, Audit, T, Auger, H, Avakian, H, Bagdasaryan, J P, Ball, S, Barrow, V, Batourine, M, Battaglieri, K, Beard, M, Bektasoglu, M, Bellis, N, Benmouna, N, Bianchi, A S, Biselli, S, Boiarinov, B E, Bonner, S, Bouchigny, R, Bradford, D, Branford, W K, Brooks, V D, Burkert, C, Butuceanu, J R, Calarco, D S, Carman, C, Cetina, S, Chen, P L, Cole, D, Cords, A, Coleman, P, Corvisiero, D, Crabb, J P, Cummings, N, Dashyan, E De, Sanctis, R De, Vita, P V, Degtyarenko, H, Denizli, L, Dennis, A, Deur, K V, Dharmawardane, C, Djalali, G E, Dodge, D, Doughty, P, Dragovitsch, M, Dugger, S, Dytman, O P, Dzyubak, H, Egiyan, K S, Egiyan, L, Elouadrhiri, A, Empl, P, Eugenio, R, Fatemi, R G, Fersch, R J, Feuerbach, T A, Forest, H, Funsten, M, Garçon, G, Gavalian, S, Gilad, G P, Gilfoyle, K L, Giovanetti, P, Girard, C I O, Gordon, R W, Gothe, K, Griffioen, M, Guidal, M, Guillo, N, Guler, L, Guo, V, Gyurjyan, C, Hadjidakis, R S, Hakobyan, J, Hardie, D, Heddle, F W, Hersman, K, Hicks, I, Hleiqawi, M, Holtrop, J, Hu, C E, Hyde-Wright, D G, Ireland, M M, Ito, D, Jenkins, K, Joo, H G, Juengst, J H, Kelley, J D, Kellie, M, Khandaker, D H, Kim, K Y, Kim, K, Kim, M S, Kim, W, Kim, A, Klein, F J, Klein, A V, Klimenko, M, Klusman, M V, Kossov, L H, Kramer, V, Kubarovski, S E, Kuhn, J, Kuhn, J, Lachniet, J M, Laget, J, Langheinrich, D, Lawrence, G A, Leksin, T, Lee, Ji, Li, K, Livingston, K, Lukashin, J J, Manak, C, Marchand, S, McAleer, J W C, McNabb, B A, Mecking, S, Mehrabyan, J J, Melone, M D, Mestayer, C A, Meyer, M, Mirazita, R, Miskimen, V, Mokeev, L, Morand, S A, Morrow, V, Muccifora, J, Mueller, G S, Mutchler, J, Napolitano, R, Nasseripour, S O, Nelson, S, Niccolai, G, Niculescu, I, Niculescu, B B, Niczyporuk, R A, Niyazov, M, Nozar, G V, O'Rielly, M, Osipenko, A I, Ostrovidov, K, Park, E, Pasyuk, G, Peterson, S A, Philips, N A, Pivnyuk, D, Pocanic, O, Pogorelko, E, Polli, S, Pozdniakov, B M, Preedom, J W, Price, Y, Prok, D, Protopopescu, L M, Qin, B A, Raue, G, Riccardi, G, Ricco, M, Ripani, B G, Ritchie, F, Ronchetti, G, Rosner, P, Rossi, D, Rowntree, P D, Rubin, F, Sabatié, K, Sabourov, C, Salgado, J P, Santoro, V, Sapunenko, R A, Schumacher, V S, Serov, Y G, Sharabian, J, Shaw, S, Simionatto, A V, Skabelin, E S, Smith, L C, Smith, D I, Sober, M, Spraker, S, Stepanyan, S S, Stepanyan, B E, Stokes, P, Stoler, I I, Strakovsky, M, Taiuti, S, Taylor, D J, Tedeschi, U, Thoma, R, Thompson, A, Tkabladze, L, Todor, C, Tur, M, Ungaro, M F, Vineyard, L S, Vorobeyev, K, Wang, L B, Weinstein, H, Weller, D P, Weygand, C S, Whisnant, M, Williams, E, Wolin, M H, Wood, A, Yegneswaran, J, Yun, and L, Zana
Subjects: INTERFEROMETRY, DRIFT CHAMBER, COLLISIONS, NUCLEI, CLAS, PARTICLES, SCATTERING, SPECTROMETER, SMALL RELATIVE MOMENTA, DRIFT CHAMBER, CLAS, NUCLEI, COLLISIONS, PARTICLES, INTERFEROMETRY, SPECTROMETER, CALORIMETER, SCATTERING, SMALL RELATIVE MOMENTA, CALORIMETER
Abstract: Two-proton correlations at small relative momentum q were studied in the eA(3He,4He,C,Fe)--e(')ppX reaction at E(0)=4.46 GeV using the CLAS detector at Jefferson Lab. The enhancement of the correlation function at small q was found to be in accordance with theoretical expectations. Sizes of the emission region were extracted, and proved to be dependent on A and on the proton momentum. The size of the two-proton emission region for He was measured in eA reactions for the first time.
Published: 2004

161. Complete Angular Distribution Measurements of Two-Body Deuteron Photodisintegration between 0.5 and 3 GeV

Author: Philip L. Cole, Moshe Gai, J. J. Melone, Friedrich Klein, William Bertozzi, P. Stoler, R. S. Hicks, Brian Raue, K. Hicks, E. Anciant, J. W C McNabb, B. M. Preedom, K. S. Egiyan, L. Todor, D. Protopopescu, I. I. Strakovsky, G. Gavalian, S. Pozdniakov, K. Mikhailov, L.C. Dennis, Z. L. Zhou, B. L. Berman, Y. Ilieva, Nicola Bianchi, J. P. Santoro, M. M. Ito, J. Shaw, J. Kuhn, V. Mokeev, L. M. Qin, J. P. Cummings, Alexei V. Klimenko, A.V. Stavinsky, K. Livingston, B. B. Niczyporuk, Michael Wood, Roy Thompson, M. Khandaker, L. C. Smith, A. V. Skabelin, R. A. Schumacher, G. A. Peterson, W. K. Brooks, G. S. Mutchler, N. Pivnyuk, J. R. Calarco, J. Napolitano, Bernhard Mecking, S. Barrow, Susan Taylor, R. A. Miskimen, V. S. Serov, O. P. Dzyubak, M. Kossov, K. Wang, K. V. Dharmawardane, John T. O'Brien, Barry Ritchie, D. J. Tedeschi, S. A. Morrow, C. Salgado, C. Djalali, M. Klusman, D. Branford, H. Egiyan, Rakhsha Nasseripour, F. Ronchetti, B. E. Bonner, Shalev Gilad, S. McAleer, J. S. McCarthy, M. Mirazita, P. Ambrozewicz, J. M. Laget, P. Eugenio, P. Corvisiero, C. I O Gordon, Elton Smith, M. Taiuti, H. Avakian, S. A. Philips, J. R. Ficenec, K. A. Griffioen, S. Simionatto, C. S. Whisnant, W. Kim, L. Morand, T. A. Forest, M. Anghinolfi, E. De Sanctis, H. Denizli, M. Battaglieri, V. Gyurjyan, H. R. Weller, James Mueller, A. I. Ostrovidov, A. C S Lima, K. L. Giovanetti, B. Asavapibhop, D. I. Sober, B. Carnahan, P. D. Rubin, M. Spraker, Larry Weinstein, Avraham Klein, Airton Deppman, Y. G. Sharabian, R. Bradford, R. J. Feuerbach, P. Dragovitsch, Michael Vineyard, D. Doughty, J. W. Price, Baile Zhang, Latifa Elouadrhiri, M. Guidal, J. Lachniet, S. Niccolai, W. J. Briscoe, S. Strauch, G. Niculescu, D. Heddle, D. Rowntree, Volker D. Burkert, A. S. Biselli, S. Stepanyan, Sylvain Bouchigny, C. A. Meyer, Hall Crannell, Shifeng Chen, V. Sapunenko, Valeria Muccifora, M. Guillo, H. Bagdasaryan, K. Y. Kim, E. Pasyuk, J. Hardie, S. A. Dytman, C. Marchand, A. Tkabladze, R. Fatemi, M. Holtrop, A. V. Vlassov, Gerard Gilfoyle, D. P. Weygand, G. E. Dodge, P. Rossi, Ji Li, R. S. Hakobyan, G. V. O'Rielly, P. V. Degtyarenko, K. Kim, J. Hu, R. De Vita, E. Polli, Daniel S. Carman, D. G. Jenkins, M. Osipenko, I. Niculescu, F. Sabatié, G. Rosner, J. J. Manak, M. D. Mestayer, D. Lawrence, Dinko Pocanic, G. Audit, C. E. Hyde-Wright, M. Bellis, K. Park, K. Beard, Kalvir S. Dhuga, M. Bektasoglu, M. Nozar, Laird Kramer, L. Guo, M. Ungaro, S. Boiarinov, S. E. Kuhn, A. Empl, O. Pogorelko, R. A. Niyazov, J. Yun, D. Cords, A. Yegneswaran, K. Lukashin, B. E. Stokes, F. W. Hersman, G. S. Adams, C. Tur, K. Joo, U. Thoma, E. Wolin, Cynthia Marie Hadjidakis, J. P. Ball, Y. Prok, Michael Dugger, H. O. Funsten, D. G. Crabb, N. Benmouna, M. Ripani, J. D. Kellie, S. Mehrabyan, G. Riccardi, C. Butuceanu, G. Ricco, Institut de Physique Nucléaire d'Orsay (IPNO), 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), CLAS, and Robert, Suzanne
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, Photon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Theory, FOS: Physical sciences, Few-body systems, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, QC, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, Gluon, High Energy Physics - Phenomenology, Cover (topology), Photodisintegration, Physics::Accelerator Physics, High Energy Physics::Experiment, Energy (signal processing)
Abstract: Nearly complete angular distributions of the two-body deuteron photodisintegration differential cross section have been measured using the CLAS detector and the tagged photon beam at JLab. The data cover photon energies between 0.5 and 3.0 GeV and center-of-mass proton scattering angles 10-160 degrees. The data show a persistent forward-backward angle asymmetry over the explored energy range, and are well-described by the non-perturbative Quark Gluon String Model., Comment: Submitted to PRC; 14 pages, 9 figures, 2 tables
Published: 2004
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162. Measurement of beam-spin asymmetries for π+ electroproduction above the baryon resonance region

Author: K. V. Dharmawardane, Cynthia Marie Hadjidakis, Michael Dugger, H. O. Funsten, M. Battaglieri, R. Bradford, B. A. Mecking, J. Hu, R. A. Miskimen, Clarisse Tur, D. Branford, M. Mirazita, J. M. Laget, G. Ricco, J. P. Santoro, Roy Thompson, R. J. Feuerbach, B. Carnahan, G. S. Adams, K. A. Griffioen, K. Joo, Philip L. Cole, J. P. Cummings, F. Sabatié, Jing Zhao, E. DeSanctis, M. Kossov, I. I. Strakovsky, P. Heimberg, J. D. Kellie, F. W. Hersman, Thierry Auger, W. Kim, M. Spraker, C. Cetina, D. I. Sober, Rakhsha Nasseripour, R. S. Hicks, R. A. Schumacher, Brian Raue, P. Eugenio, M. Taiuti, Michael Vineyard, A.V. Stavinsky, V. Gyurjyan, N. Benmouna, M. Ripani, K. Livingston, B. M. Preedom, L. Ciciani, Carlos A. Salgado, J. Lachniet, M. M. Ito, Daniel S. Carman, V. Sapunenko, R. Fatemi, Valeria Muccifora, W. K. Brooks, D. Rowntree, D. J. Tedeschi, G. Audit, S. Simionatto, L. C. Smith, A. V. Vlassov, C. E. Hyde-Wright, G. S. Mutchler, H. Bagdasaryan, S. J. Gaff, J. W. Price, Min Suk Kim, Gerard Gilfoyle, L. Guo, M. Ungaro, K. Y. Kim, H. Egiyan, J. J. Melone, K. L. Giovanetti, B. Asavapibhop, L. M. Qin, D. S. Armstrong, K. Wang, G. A. Peterson, Laird Kramer, Larry Weinstein, J. R. Calarco, D. Doughty, R. S. Hakobyan, Andreas Klein, Shalev Gilad, S. Barrow, Alexei V. Klimenko, Y. Ilieva, C. S. Whisnant, D. Heddle, Barry Ritchie, C. I O Gordon, M. Nozar, L. Morand, Ji Li, M. Bektasoglu, U. Thoma, M. Klusman, A. Longhi, J. Yun, D. Cords, Federico Ronchetti, A. Yegneswaran, E. Wolin, T. A. Forest, M. D. Mestayer, J. J. Manak, S. Stepanyan, A. Coleman, P. Dragovitsch, J. P. Ball, Y. Prok, M. Eckhause, H. R. Weller, E. Anciant, Nicola Bianchi, Andrei Afanasev, M. Sargsyan, H. Denizli, Baile Zhang, S. Niccolai, Sylvain Bouchigny, S. Boiarinov, L. Todor, D. Protopopescu, M. Khandaker, K. Park, D. G. Crabb, M. Guillo, A. K. Opper, J. Hardie, P. Rossi, S. Pozdniakov, M. Osipenko, Z. L. Zhou, A. V. Skabelin, Volker D. Burkert, A. S. Biselli, O. P. Dzyubak, R. A. Niyazov, Y. Kuang, K. Beard, Latifa Elouadrhiri, S. Mehrabyan, G. E. Dodge, R. C. Minehart, E. Polli, C. A. Meyer, Dinko Pocanic, P. V. Degtyarenko, K. Kim, P. Corvisiero, G. Riccardi, G. Gavalian, S. E. Kuhn, D. P. Weygand, M. Guidal, G. Niculescu, Daijin Kim, C. Butuceanu, J. H. Kelley, M. Holtrop, Stephen Taylor, B. B. Niczyporuk, Elton Smith, J. R. Ficenec, N. Pivnyuk, I. Niculescu, K. Lukashin, P. Stoler, M. Anghinolfi, J. Napolitano, D. Lawrence, James Mueller, Y. G. Sharabian, S. O. Nelson, K. Hicks, Hall Crannell, R. DeVita, J. W C McNabb, C. Marchand, S. A. Morrow, P. Rubin, C. Djalali, K. S. Egiyan, P. Ambrozewicz, K. Mikhailov, S. McAleer, S. Strauch, G. V. O'Rielly, D. G. Jenkins, K. Sabourov, M. Bellis, V. P. Kubarovsky, A. Empl, O. Pogorelko, Frank Klein, Patrick Girard, J. Shaw, Michael Wood, V. S. Serov, L. C. Dennis, B. E. Bonner, H. Avakian, E. Pasyuk, and S. A. Dytman
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Proton, Resonance, Virtual particle, Nuclear physics, Momentum, Baryon, Amplitude, Pion, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Spin-½
Abstract: We report the first evidence for a nonzero beam-spin azimuthal asymmetry in the electroproduction of positive pions in the deep-inelastic kinematic region. Data for the reaction ep→e'pi(+)X have been obtained using a polarized electron beam of 4.3 GeV with the CEBAF Large Acceptance Spectrometer at the Thomas Jefferson National Accelerator Facility. The amplitude of the sin phi modulation increases with the momentum of the pion relative to the virtual photon, z. In the range z=0.5-0.8 the average amplitude is 0.038+/-0.005+/-0.003 for a missing mass M-X gt 1.1 GeV and 0.037+/-0.007+/-0.004 for M-X gt 1.4 GeV
Published: 2004

163. Rheology of dilute polymer solutions and engine lubricants in high deformation rate extensional flows produced by bubble collapse

Author: R. L. Williams, M. S. Barrow, S. Cordy, Phylip Rhodri Williams, and S. W. J. Brown
Subjects: Viscosity, Materials science, Rheology, Mechanical Engineering, Cavitation, Bubble, Newtonian fluid, medicine, Composite material, Deformation (engineering), Xanthan gum, Viscoelasticity, medicine.drug
Abstract: We report a study of liquid jets formed by the collapse of bubbles under cavitation-generated pressure waves. Such jets involve an extensional flow which is characterized by high rates of extension, the latter being relevant to considerations of the flow of oils within dynamically loaded journal bearings. The technique reported here is found to be sensitive to the influence of extremely small concentrations of high molecular weight polymeric additive (xanthan gum). Commercial multigrade oils are also found to exhibit significantly larger resistance to extensional flow than their Newtonian counterparts and, insofar as the multigrade oils studied here are made viscoelastic by polymer additives, and possess significant levels of resistance to extension, the results provide evidence in support of a mitigating effect of viscoelasticity on cavitation, as mooted by Berker et al. [3].
Published: 2004

164. Physical characterisation of microporous and nanoporous polymer films by atomic force microscopy, scanning electron microscopy and high speed video microphotography

Author: M. S. Barrow, R. L. Jones, J. O. Park, M. Srinivasarao, P. R. Williams, and C. J. Wright
Subjects: chemistry.chemical_classification, Microphotography, Materials science, Scanning electron microscope, Nanoporous, Nanotechnology, Polymer, Microporous material, Solvent, chemistry, Chemical engineering, Monolayer, Porosity, Spectroscopy
Abstract: We report studies of ordered microporous and nanoporous polymer films formed by the evaporation of polymer solutions following exposure to a humid atmosphere. High speed microphotographic (HSMP) studies of the formation process showed that near the surface of the polymer solution, vapour condensation produced near mono-disperse water droplets which form a close-packed monolayer (or ‘breath figure’). Following the evaporation of the solvent, characterisation of the solid by Atomic Force Microscopy and Scanning Electron Microscopy revealed that the surface of the polymer film is characterised by extensive regions of hexagonally close-packed microscopic pores, whose spatial arrangement replicates that of the initial droplet monolayer. Characterisation of sections of the film by Atomic Force Microscopy established that the surficial pores represent open sections of sub-surficial spheroidal cavities formed by encapsulation of the water droplets within the polymer solution. An interesting feature of the results is the occurrence of nano-scale pores at the film surface and at (and within) the walls of the sub-surficial microscopic pores. This is the first physical evidence report of such features in porous polymer films produced by a process involving breath-figures. Their dimensions suggest that more detailed structural investigations will require alternative techniques to conventional, optical methods.
Published: 2004
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165. Quasielastic(e,e′p)reaction onC12,Fe56, andAu197

Author: D. Dutta, D. van Westrum, D. Abbott, A. Ahmidouch, Ts. A. Amatuoni, C. Armstrong, J. Arrington, K. A. Assamagan, K. Bailey, O. K. Baker, S. Barrow, K. Beard, D. Beatty, S. Beedoe, E. Beise, E. Belz, C. Bochna, P. E. Bosted, H. Breuer, E. E. W. Bruins, R. Carlini, J. Cha, N. Chant, C. Cothran, W. J. Cummings, S. Danagoulian, D. Day, D. DeSchepper, J.-E. Ducret, F. Duncan, J. Dunne, T. Eden, R. Ent, H. T. Fortune, V. Frolov, D. F. Geesaman, H. Gao, R. Gilman, P. Guèye, J. O. Hansen, W. Hinton, R. J. Holt, C. Jackson, H. E. Jackson, C. Jones, S. Kaufman, J. J. Kelly, C. Keppel, M. Khandaker, W. Kim, E. Kinney, A. Klein, D. Koltenuk, L. Kramer, W. Lorenzon, A. Lung, K. McFarlane, D. J. Mack, R. Madey, P. Markowitz, J. Martin, A. Mateos, D. Meekins, M. A. Miller, R. Milner, J. Mitchell, R. Mohring, H. Mkrtchyan, A. M. Nathan, G. Niculescu, I. Niculescu, T. G. O’Neill, D. Potterveld, J. W. Price, J. Reinhold, C. Salgado, J. P. Schiffer, R. E. Segel, P. Stoler, R. Suleiman, V. Tadevosyan, L. Tang, B. Terburg, T. P. Welch, C. Williamson, S. Wood, C. Yan, J.-C. Yang, J. Yu, B. Zeidman, W. Zhao, and B. Zihlmann
Subjects: Physics, Nuclear and High Energy Physics, Mathematical physics
Published: 2003

166. Measurement of the Proton Spin Structure Functiong1(x,Q2)forQ2from 0.15 to1.6 GeV2with CLAS

Author: S. J. Gaff, D. Doughty, M. Seely, G. Ricco, D. Heddle, R. J. Feuerbach, Philip L. Cole, C. S. Whisnant, L. Farhi, Bernhard Mecking, V. Sapunenko, Dinko Pocanic, Valeria Muccifora, K. V. Dharmawardane, C. D. Keith, P. Eugenio, Shalev Gilad, M. Taiuti, M. Guillo, Gerard Gilfoyle, S. E. Kuhn, R. A. Niyazov, John T. O'Brien, S. Strauch, Friedrich Klein, L. C. Dennis, B. E. Bonner, B. Carnahan, F. Sabatié, W. K. Brooks, L. M. Qin, P. Corvisiero, J. H. Kelley, R. S. Hicks, Brian Raue, Jing Zhao, William Bertozzi, C. Tur, S. Mehrabyan, D. Protopopescu, J. P. Cummings, H. R. Weller, Volker D. Burkert, C. Cetina, A. S. Biselli, S. Pozdniakov, M. Garçon, Thierry Auger, J. R. Calarco, F. W. Hersman, K. S. Egiyan, V. Koubarovski, K. Mikhailov, E. Anciant, Michael Vineyard, Baile Zhang, E. Pasyuk, B. M. Preedom, G. V. O'Rielly, L. Elouadrhiri, Z. L. Zhou, C. Butuceanu, M. Kossov, W. Kim, E. Wolin, R. A. Miskimen, S. A. Dytman, M. Ripani, J. P. Santoro, C. E. Hyde-Wright, J. Hu, D. Branford, Rakhsha Nasseripour, M. Khandaker, A. V. Skabelin, G. S. Mutchler, D. G. Jenkins, Susan Taylor, H. Egiyan, K. Sabourov, J. P. Ball, Y. Prok, M. Eckhause, M. Sargsyan, D. G. Crabb, M. Spraker, Y. Ilieva, Patrick Girard, J. Shaw, Michael Wood, M. Mirazita, J. M. Laget, K. Wang, C. Salgado, P. E. Bosted, A. P. Freyberger, Harut Avakian, Y. Kuang, K. Y. Kim, C. Marchand, Laird Kramer, V. S. Serov, S. McAleer, E. Polli, M. Battaglieri, M. Bellis, K. Park, Federico Ronchetti, K. A. Griffioen, Roy Thompson, V. Frolov, Elton Smith, M. Guidal, R. Bradford, M. M. Ito, J. Ficenec, G. Niculescu, L. Ciciani, A. Longhi, M. Klusman, Ji Li, L. Todor, R. Clark, P. Heimberg, Jens H. Kuhn, M. Holtrop, Thomas E. Smith, M. Anghinolfi, M. D. Mestayer, A. Empl, O. Pogorelko, S. Simionatto, J. D. Kellie, S. Stepanyan, Nicola Bianchi, K. Lukashin, Sylvain Bouchigny, K. Livingston, James Mueller, H. Funsten, Cynthia Marie Hadjidakis, K. L. Giovanetti, B. Asavapibhop, P. Rossi, S. Boiarinov, P. D. Rubin, J. W. Price, Michael Dugger, Larry Weinstein, M. Osipenko, Y. G. Sharabian, H. Denizli, Daniel S. Carman, G. Audit, K. Beard, G. A. Peterson, J. Connelly, Kalvir S. Dhuga, Alexei V. Klimenko, S. Barrow, M. Bektasoglu, G. Gavalian, Barry Ritchie, M. Nozar, R. C. Minehart, C. A. Meyer, P. Stoler, S. O. Nelson, K. Hicks, R. Fatemi, A. V. Vlassov, R. De Vita, J. J. Manak, E. De Sanctis, D. I. Sober, A.V. Stavinsky, L. Sorrel, D. J. Tedeschi, V. Gyurjyan, H. Bagdasaryan, D. Hancock, L. Guo, M. Ungaro, P. Dragovitsch, S. Niccolai, K. Joo, J. Yun, J. Hardie, D. Cords, A. Yegneswaran, G. E. Dodge, P. V. Degtyarenko, K. Kim, I. Niculescu, D. Lawrence, R. A. Schumacher, J. Lachniet, D. Rowntree, C. I O Gordon, L. Morand, T. A. Forest, A. Coleman, B. B. Niczyporuk, N. Pivnyuk, S. E. Rock, Avraham Klein, J. Napolitano, W. Major, G. S. Adams, Hall Crannell, G. Riccardi, J. W C McNabb, S. A. Morrow, C. Djalali, U. Thoma, D. P. Weygand, and L. C. Smith
Subjects: Physics, Nuclear physics, Particle physics, Scattering, Proton spin crisis, General Physics and Astronomy, Electron, Nucleon, Parametrization, Resonance (particle physics), Scaling, Sign (mathematics)
Abstract: Double-polarization asymmetries for inclusive $ep$ scattering were measured at Jefferson Lab using 2.6 and 4.3 GeV longitudinally polarized electrons incident on a longitudinally polarized NH$_3$ target in the CLAS detector. The polarized structure function $g_1(x,Q^2)$ was extracted throughout the nucleon resonance region and into the deep inelastic regime, for $Q^2 = 0.15 -1.64 $GeV$^2$. The contributions to the first moment $\Gamma_1(Q^2) = \int g_1(x,Q^2)dx$ were determined up to $Q^2=1.2$ GeV$^2$. Using a parametrization for $g_1$ in the unmeasured low $x$ regions, the complete first moment was estimated over this $Q^2$ region. A rapid change in $\Gamma_1$ is observed for $Q^2 < 1 $GeV$^2$, with a sign change near $Q^2 = 0.3 $GeV$^2$, indicating dominant contributions from the resonance region. At $Q^2=1.2$ GeV$^2$ our data are below the pQCD evolved scaling value.
Published: 2003

167. Rheology of Multigrade Engine Lubricants in High Deformation Rate Extensional Flow

Author: M. S. Barrow, S. Cordy, Karl Hawkins, S. W. J. Brown, and P. R. Williams
Subjects: Viscosity, Materials science, Rheology, Newtonian fluid, Lubrication, Mechanical engineering, Composite material, Deformation (meteorology), Lubricant, Diesel engine, Petrol engine
Abstract: We report the results of recent experimental work involving the formation of low shear viscosity liquid filaments by the collapse of a gas bubble under a cavitation-generated shockwave. The filaments experience a significant degree of extensional deformation, at high rates of extension (typically within the range 1000 s' to 5000 s - 1 ) which are relevant to considerations of journal bearing lubrication. The results of experiments conducted on samples of commercial multigrade engine lubricants in the SAE 15W-40 and 5W-30 viscosity grades indicate a substantially increased resistance to extensional flow when compared with the behaviour of their Newtonian counterparts. Interestingly, the technique is able to distinguish between the rheological properties of lubricants of identical SAE category (15W-40) which are formulated for use in different engines (petrol engine and diesel engine, respectively). The lubricant formulated for the latter application is found to exhibit the highest resistance to extensional flow.
Published: 2003

168. Cavitational Film-Splitting of Lubricants

Author: M. S. Barrow, P. R. Williams, R. L. Williams, and A. Al-Hussany
Subjects: Surface (mathematics), Work (thermodynamics), Colloid, Materials science, Classical mechanics, Tension (physics), Plane (geometry), Oil film, Development (differential geometry), Transient (oscillation), Mechanics
Abstract: We report work in which an oil film is stretched between a moving colloid sphere and a static plane surface. Under some circumstances, when the sphere and the surface are pulled apart sufficiently rapidly, an unexpected transient decrease of the sphere-surface separation is recorded. Numerical simulations indicate that cavitation bubble growth may result in the development of sufficient tension to account for this phenomenon: a finding confirmed by separate acoustic experiments and high speed microphotographic work.
Published: 2003

169. Measurement of the polarized structure functionσLT′forp(e→,e′p)π0in theΔ(1232)resonance region

Author: Susan Taylor, W. Kim, J. Kuhn, C. S. Whisnant, D. I. Sober, Laird Kramer, Roy Thompson, Daniel S. Carman, H. Denizli, R. J. Feuerbach, G. Audit, C. E. Hyde-Wright, P. Eugenio, M. Taiuti, S. Strauch, J. Hu, S. McAleer, G. A. Peterson, Cynthia Marie Hadjidakis, L. C. Dennis, M. Nozar, Dinko Pocanic, H. Avakian, Michael Dugger, L. Guo, S. Barrow, M. Guidal, Alexei V. Klimenko, H. O. Funsten, R. Fatemi, M. Ungaro, S. E. Kuhn, G. Niculescu, E. Anciant, A. V. Vlassov, M. Osipenko, A. C S Lima, L. M. Qin, W. J. Briscoe, E. Pasyuk, M. Holtrop, J. H. Kelley, C. Tur, L. Y. Murphy, K. Beard, S. A. Dytman, G. Ricco, Barry Ritchie, Kalvir S. Dhuga, P. Dragovitsch, Volker D. Burkert, A. S. Biselli, J. P. Cummings, L. Todor, Jing Zhao, G. Gavalian, M. Klusman, M. Bektasoglu, J. W. Price, Philip L. Cole, D. Protopopescu, S. Niccolai, Elton Smith, E. Wolin, S. Pozdniakov, M. Kossov, M. Anghinolfi, S. A. Philips, J. Hardie, J. J. Melone, Friedrich Klein, Z. L. Zhou, Rakhsha Nasseripour, James Mueller, K. Y. Kim, M. Khandaker, R. S. Hicks, Brian Raue, P. D. Rubin, N. Benmouna, M. Guillo, M. Ripani, Y. G. Sharabian, J. P. Ball, Y. Prok, M. Eckhause, O. P. Dzyubak, R. A. Niyazov, A.V. Stavinsky, J. J. Manak, G. V. O'Rielly, A. K. Opper, Hovanes Egiyan, B. Carnahan, D. J. Tedeschi, F. Sabatié, Hall Crannell, D. G. Jenkins, A. V. Skabelin, Y. Kuang, M. Sargsyan, Y. Ilieva, K. Sabourov, Thierry Auger, G. S. Mutchler, J. Ficenec, E. Polli, L. Ciciani, F. W. Hersman, K. Joo, Federico Ronchetti, R. C. Minehart, C. A. Meyer, S. Simionatto, J. Yun, P. Corvisiero, D. Cords, D. G. Crabb, C. Cetina, L. Elouadrhiri, A. Yegneswaran, V. Sapunenko, Valeria Muccifora, Michael Vineyard, I. I. Strakovsky, K. L. Giovanetti, B. Asavapibhop, K. S. Egiyan, W. K. Brooks, M. Spraker, Larry Weinstein, E. DeSanctis, D. Doughty, Gerard Gilfoyle, K. Mikhailov, D. Heddle, V. Gyurjyan, S. Mehrabyan, H. Bagdasaryan, Nicola Bianchi, R. A. Miskimen, D. P. Weygand, Ji Li, Shalev Gilad, G. Riccardi, G. E. Dodge, P. Stoler, D. Branford, M. Mirazita, J. M. Laget, C. Butuceanu, S. O. Nelson, K. Hicks, M. D. Mestayer, P. V. Degtyarenko, K. Kim, S. Boiarinov, G. S. Adams, B. M. Preedom, R. DeVita, K. A. Griffioen, J. W C McNabb, U. Thoma, I. Niculescu, J. Lachniet, D. Rowntree, D. Lawrence, J. P. Santoro, P. Heimberg, R. S. Hakobyan, R. A. Schumacher, K. Wang, C. Salgado, C. I O Gordon, L. Morand, B. B. Niczyporuk, T. A. Forest, S. Stepanyan, N. Pivnyuk, K. Lukashin, J. Napolitano, Avraham Klein, S. A. Morrow, C. Djalali, P. Ambrozewicz, M. Battaglieri, R. Bradford, M. U. Mozer, Bernhard Mecking, K. V. Dharmawardane, M. M. Ito, A. Coleman, H. R. Weller, L. C. Smith, S. J. Gaff, C. Marchand, Patrick Girard, J. Shaw, Michael Wood, Sylvain Bouchigny, V. S. Serov, P. Rossi, M. Bellis, K. Park, J. R. Calarco, A. Empl, and O. Pogorelko
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Pion, Nuclear magnetic resonance, Structure function, Pole term, Isobar, Resonance, Electron, Nuclear Experiment, Energy (signal processing)
Abstract: The polarized longitudinal-transverse structure function ${\ensuremath{\sigma}}_{L{T}^{\ensuremath{'}}}$ has been measured using the $p(\stackrel{P\vec}{e},{e}^{\ensuremath{'}}{\ensuremath{\pi}}^{+})n$ reaction in the $\ensuremath{\Delta}(1232)$ resonance region at ${Q}^{2}=0.40$ and $0.65\phantom{\rule{0.3em}{0ex}}{\mathrm{GeV}}^{2}$. No previous ${\ensuremath{\sigma}}_{L{T}^{\ensuremath{'}}}$ data exist for this reaction channel. The kinematically complete experiment was performed at the Jefferson Lab with the CEBAF large acceptance spectrometer using longitudinally polarized electrons at an energy of $1.515\phantom{\rule{0.3em}{0ex}}\mathrm{GeV}$. A partial-wave analysis of the data shows generally better agreement with recent phenomenological models of pion electroproduction compared to the previously measured ${\ensuremath{\pi}}^{0}p$ channel. A fit to both ${\ensuremath{\pi}}^{0}p$ and ${\ensuremath{\pi}}^{+}n$ channels using a unitary isobar model suggests the unitarized Born terms provide a consistent description of the nonresonant background. The $t$-channel pion pole term is important in the ${\ensuremath{\pi}}^{0}p$ channel through a rescattering correction, which could be model dependent.
Published: 2003

170. ep→epπ0reaction studied in theΔ(1232)mass region using polarization asymmetries

Author: A. Biselli, G. S. Adams, M. J. Amaryan, E. Anciant, M. Anghinolfi, B. Asavapibhop, G. Asryan, G. Audit, T. Auger, H. Avakian, S. Barrow, M. Battaglieri, K. Beard, M. Bektasoglu, W. Bertozzi, N. Bianchi, S. Boiarinov, B. E. Bonner, P. Bosted, S. Bouchigny, R. Bradford, D. Branford, W. K. Brooks, S. Bueltmann, V. D. Burkert, J. R. Calarco, D. S. Carman, B. Carnahan, C. Cetina, L. Ciciani, P. L. Cole, A. Coleman, J. Connelly, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. Cummings, E. De Sanctis, R. De Vita, P. V. Degtyarenko, R. A. Demirchyan, H. Denizli, L. C. Dennis, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, J. Domingo, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, M. Eckhause, Y. V. Efremenko, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, L. Farhi, R. Fatemi, R. J. Feuerbach, J. Ficenec, K. Fissum, T. A. Forest, A. Freyberger, V. Frolov, H. Funsten, S. J. Gaff, M. Gai, G. Gavalian, V. B. Gavrilov, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, E. Golovatch, K. A. Griffioen, M. Guidal, M. Guillo, L. Guo, V. Gyurjyan, D. Hanock, J. Hardie, D. Heddle, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, M. M. Ito, D. Jenkins, K. Joo, J. H. Kelley, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Klusman, M. Kossov, L. H. Kramer, Y. Kuang, J. Kuhn, S. E. Kuhn, J. Lachniet, J. M. Laget, D. Lawrence, G. A. Leksin, A. Longhi, K. Loukachine, R. W. Major, J. J. Manak, C. Marchand, S. K. Matthews, S. McAleer, J. W. C. McNabb, J. McCarthy, B. A. Mecking, M. D. Mestayer, C. A. Meyer, R. Minehart, M. Mirazita, R. Miskimen, V. Mokeev, V. Muccifora, J. Mueller, L. Y. Murphy, G. S. Mutchler, J. Napolitano, S. O. Nelson, G. Niculescu, B. Niczyporuk, R. A. Niyazov, M. Nozar, J. T. O’Brien, G. V. O’Rielly, M. S. Ohandjanyan, M. Osipenko, K. Park, Y. Patois, G. A. Peterson, S. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, B. M. Preedom, J. W. Price, L. M. Qin, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, S. Rock, F. Ronchetti, P. Rossi, D. Rowntree, P. D. Rubin, K. Sabourov, C. W. Salgado, V. Sapunenko, M. Sargsyan, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, J. Shaw, S. M. Shuvalov, S. Simionatto, A. Skabelin, E. S. Smith, L. C. Smith, T. Smith, D. I. Sober, L. Sorrell, M. Spraker, S. Stepanyan, P. Stoler, I. I. Strakovsky, M. Taiuti, S. Taylor, D. Tedeschi, U. Thoma, R. Thompson, L. Todor, T. Y. Tung, C. Tur, M. Ungaro, M. F. Vineyard, A. Vlassov, K. Wang, L. B. Weinstein, H. Weller, R. Welsh, D. P. Weygand, S. Whisnant, M. Witkowski, E. Wolin, A. Yegneswaran, J. Yun, B. Zhang, J. Zhao, and Z. Zhou
Subjects: Physics, Delta, Nuclear and High Energy Physics, Range (particle radiation), media_common.quotation_subject, Polarization (waves), Asymmetry, Nuclear physics, Effective lagrangian, Isobar, High Energy Physics::Experiment, Nuclear Experiment, Spin (physics), media_common
Abstract: Measurements of the angular distributions of target and double spin asymmetries for the Delta(1232) in the exclusive channel (polarized-p polarized-e,e-prime p)pi0 obtained at Jefferson Lab in the Q2 range from 0.5 to 1.5 gev2 are presented. Results of the asymmetries are compared with the unitary isobar model, dynamical models, and the effective Lagrangian theory. Sensitivity to the different models was observed, particularly in relation to the description of background terms on which the target asymmetry depends significantly.
Published: 2003

171. Observation of nuclear scaling in theA(e,e′)reaction atxB>1

Author: K. Mikhailov, P. Eugenio, R. J. Feuerbach, M. Taiuti, A. Weisberg, Patrick Girard, J. Shaw, Michael Wood, V. S. Serov, Laird Kramer, R. A. Schumacher, A. Coleman, G. Asryan, K. A. Griffioen, M. U. Mozer, O. P. Dzyubak, R. A. Niyazov, L. C. Dennis, B. E. Bonner, Bernhard Mecking, P. Corvisiero, K. V. Dharmawardane, H. Avakian, P. Stoler, S. O. Nelson, K. Hicks, P. Heimberg, C. I O Gordon, W. J. Briscoe, Susan Taylor, Jing Zhao, E. Pasyuk, S. A. Dytman, A.V. Stavinsky, M. Guidal, L. C. Maximon, M. Battaglieri, Volker D. Burkert, A. S. Biselli, L. Morand, T. A. Forest, M. Guillo, H. Denizli, C. S. Whisnant, M. Bektasoglu, J. Kuhn, D. J. Tedeschi, M. Bellis, K. Park, Hovanes Egiyan, G. Niculescu, Daijin Kim, Elton Smith, Shalev Gilad, Avraham Klein, G. V. O'Rielly, Roy Thompson, R. A. Miskimen, R. Bradford, K. Lukashin, J. Lachniet, J. S. McCarthy, G. Ricco, D. Rowntree, A. Empl, O. Pogorelko, I. I. Strakovsky, M. Anghinolfi, J. P. Cummings, E. DeSanctis, D. Branford, D. G. Jenkins, M. Mirazita, K. Sabourov, J. M. Laget, Philip L. Cole, S. Strauch, J. Connelly, M. Holtrop, James Mueller, R. S. Hakobyan, Moshe Gai, Misak Sargsian, Ivan Bedlinski, U. Thoma, J. J. Melone, Friedrich Klein, P. D. Rubin, M. Kossov, V. Sapunenko, W. K. Brooks, Valeria Muccifora, L. M. Qin, Mark Strikman, A. V. Skabelin, P. Dragovitsch, G. S. Mutchler, R. S. Hicks, Brian Raue, G. Riccardi, Latifa Elouadrhiri, Rakhsha Nasseripour, Gerard Gilfoyle, S. McAleer, Y. G. Sharabian, S. Niccolai, J. Hu, M. Klusman, L. Guo, R. DeVita, M. Ungaro, J. Hardie, R. C. Minehart, C. A. Meyer, J. W C McNabb, N. Benmouna, M. Ripani, Dinko Pocanic, Cynthia Marie Hadjidakis, Michael Dugger, B. Carnahan, H. Funsten, J. W. Price, B. B. Niczyporuk, Daniel S. Carman, Thierry Auger, S. E. Kuhn, Alexei V. Klimenko, J. H. Kelley, N. Pivnyuk, K. Sh Egiyan, C. Tur, J. Napolitano, Barry Ritchie, G. Audit, C. E. Hyde-Wright, Baile Zhang, G. Gavalian, J. Yun, D. Cords, M. M. Ito, S. A. Morrow, C. Djalali, L. Todor, A. Yegneswaran, J. R. Calarco, L. C. Smith, R. A. Demirchyan, C. Marchand, F. W. Hersman, Y. Kuang, P. Ambrozewicz, S. Stepanyan, Sylvain Bouchigny, M. Nozar, P. Rossi, D. I. Sober, E. Polli, V. Gyurjyan, R. Fatemi, S. A. Philips, A. V. Vlassov, K. Y. Kim, H. Bagdasaryan, Min Suk Kim, J. J. Manak, H. R. Weller, M. Osipenko, F. Sabatié, K. Beard, Kalvir S. Dhuga, W. Kim, F. Ronchetti, J. Ficenec, L. Ciciani, S. Simionatto, K. L. Giovanetti, B. Asavapibhop, Larry Weinstein, D. Doughty, D. Heddle, E. Anciant, A. K. Opper, M. Khandaker, Y. Ilieva, Nicola Bianchi, Hall Crannell, G. S. Adams, D. Protopopescu, K. Joo, G. E. Dodge, S. Pozdniakov, Z. L. Zhou, P. V. Degtyarenko, K. Kim, D. P. Weygand, Ji Li, I. Niculescu, D. Lawrence, M. D. Mestayer, G. A. Peterson, S. Barrow, S. Boiarinov, B. M. Preedom, J. P. Santoro, E. Wolin, J. P. Ball, Y. Prok, M. Eckhause, D. G. Crabb, M. Spraker, K. Wang, N. Dashyan, C. Salgado, C. Cetina, Michael Vineyard, L. Y. Murphy, S. Mehrabyan, and C. Butuceanu
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Helium-4, Helium-3, Nuclear Theory, Hadron, Carbon-12, Elementary particle, Atomic physics, Nuclear Experiment, Nucleon, Isotopes of helium
Abstract: The ratios of inclusive electron scattering cross sections of ${}^{4}\mathrm{He},$ ${}^{12}\mathrm{C},$ and ${}^{56}\mathrm{Fe}$ to ${}^{3}\mathrm{He}$ have been measured for the first time. It is shown that these ratios are independent of ${x}_{B}$ at ${Q}^{2}g1.4{\mathrm{GeV}}^{2}$ for ${x}_{B}g1.5,$ where the inclusive cross section depends primarily on the high momentum components of the nuclear wave function. The observed scaling shows that the momentum distributions at high-momenta have the same shape for all nuclei and differ only by a scale factor. The observed onset of the scaling at ${Q}^{2}g1.4{\mathrm{GeV}}^{2}$ and ${x}_{B}g1.5$ is consistent with the kinematical expectation that two-nucleon short range correlations (SRC) dominate the nuclear wave function at ${p}_{m}\ensuremath{\gtrsim}300\mathrm{MeV}/c.$ The values of these ratios in the scaling region can be related to the relative probabilities of SRC in nuclei with $Ag~3.$ Our data, combined with calculations and other measurements of the ${}^{3}\mathrm{H}\mathrm{e}/\mathrm{d}\mathrm{e}\mathrm{u}\mathrm{t}\mathrm{e}\mathrm{r}\mathrm{i}\mathrm{u}\mathrm{m}$ ratio, demonstrate that for nuclei with $Ag~12$ these probabilities are 4.9--5.9 times larger than in deuterium, while for ${}^{4}\mathrm{He}$ it is larger by a factor of about 3.8.
Published: 2003

172. Measurement ofep→e′pπ+π−and Baryon Resonance Analysis

Author: R. Fatemi, A. Cazes, M. U. Mozer, Bernhard Mecking, K. V. Dharmawardane, A. V. Vlassov, J. Hu, M. Battaglieri, R. Bradford, R. De Vita, E. Wolin, J. J. Manak, R. A. Niyazov, B. Carnahan, Jing Zhao, S. A. Philips, E. De Sanctis, Thierry Auger, D. I. Sober, Patrick Girard, J. Shaw, Michael Wood, P. Corvisiero, E. Golovach, J. P. Ball, Y. Prok, V. S. Serov, R. A. Schumacher, Daniel S. Carman, D. Protopopescu, S. Pozdniakov, M. Garçon, M. Eckhause, G. Ricco, G. Audit, Z. L. Zhou, A. Shafi, C. E. Hyde-Wright, Philip L. Cole, M. Taiuti, M. Ripani, Moshe Gai, Friedrich Klein, M. Bektasoglu, R. S. Hicks, Brian Raue, L. Morand, T. A. Forest, Roy Thompson, Avraham Klein, G. E. Dodge, S. A. Morrow, D. G. Crabb, I. I. Strakovsky, C. Djalali, P. V. Degtyarenko, K. Kim, G. S. Adams, B. M. Preedom, M. Spraker, M. Bellis, K. Park, B. L. Berman, I. Niculescu, K. Joo, D. Lawrence, J. P. Santoro, M. Klusman, E. Anciant, M. Guidal, G. Niculescu, W. K. Brooks, L. M. Qin, A. Empl, O. Pogorelko, K. Lukashin, B. E. Bonner, M. Holtrop, U. Thoma, H. Avakian, D. P. Weygand, Dinko Pocanic, Gerald Feldman, A. K. Opper, S. E. Kuhn, W. J. Briscoe, E. Pasyuk, K. Wang, F. W. Hersman, S. A. Dytman, R. A. Miskimen, J. H. Kelley, C. Salgado, M. Khandaker, M. Nozar, B. B. Niczyporuk, N. Pivnyuk, P. Stoler, D. Branford, J. Napolitano, Elton Smith, Ji Li, Cynthia Marie Hadjidakis, M. Mirazita, J. M. Laget, G. V. O'Rielly, Michael Dugger, S. O. Nelson, M. D. Mestayer, L. Elouadrhiri, K. Hicks, M. Anghinolfi, Laird Kramer, J. P. Cummings, James Mueller, S. Boiarinov, K. S. Egiyan, G. Riccardi, J. W C McNabb, V. Sapunenko, P. D. Rubin, F. Ronchetti, Y. G. Sharabian, Valeria Muccifora, K. Mikhailov, D. G. Jenkins, M. Kossov, K. Sabourov, Rakhsha Nasseripour, J. Ficenec, M. Guillo, Gerard Gilfoyle, L. Ciciani, Hall Crannell, W. Kim, Baile Zhang, R. C. Minehart, J. R. Calarco, C. A. Meyer, S. Simionatto, C. Cetina, Michael Vineyard, P. Dragovitsch, Volker D. Burkert, A. S. Biselli, G. V. Fedotov, Y. Kuang, L. Y. Murphy, E. Polli, K. Y. Kim, A. Longhi, S. Niccolai, S. McAleer, C. Marchand, K. L. Giovanetti, B. Asavapibhop, H. Funsten, S. Stepanyan, Sylvain Bouchigny, J. W. Price, P. Rossi, L.C. Dennis, M. M. Ito, L. Todor, J. Hardie, H. Denizli, Larry Weinstein, L. C. Smith, S. J. Gaff, B. S. Ishkhanov, B. P. Quinn, D. Doughty, H. R. Weller, Alexei V. Klimenko, Barry Ritchie, D. Heddle, M. Osipenko, F. Sabatié, K. Beard, A. V. Skabelin, G. Gavalian, V. Mokeev, G. S. Mutchler, K. A. Griffioen, P. Heimberg, J. D. Kellie, Shalev Gilad, R. J. Feuerbach, A.V. Stavinsky, D. J. Tedeschi, J. S. McCarthy, J. Lachniet, D. Rowntree, Jens H. Kuhn, L. Guo, M. Ungaro, Nicola Bianchi, A. Coleman, Susan Taylor, H. Egiyan, C. S. Whisnant, K. Livingston, G. A. Peterson, S. Barrow, J. Yun, D. Cords, A. Yegneswaran, V. Gyurjyan, and H. Bagdasaryan
Subjects: Baryon, Nuclear physics, Physics, Particle physics, Meson production, Resonance analysis, General Physics and Astronomy, Resonance (particle physics)
Abstract: The cross section for the reaction ep→e'ppi(+)pi(-) was measured in the resonance region for 1.4 lt W lt 2.1 GeV and 0.5 lt Q(2) lt 1.5 GeV2/c(2) using the CLAS detector at Jefferson Laboratory. The data show resonant structures not visible in previous experiments. The comparison of our data to a phenomenological prediction using available information on N* and Delta states shows an evident discrepancy. A better description of the data is obtained either by a sizable change of the properties of the P-13(1720) resonance or by introducing a new baryon state, not reported in published analyses.
Published: 2003

173. Kinematically complete measurement of the proton structure functionF2in the resonance region and evaluation of its moments

Author: W. Kim, Ji Li, E. Wolin, Baile Zhang, A. K. Opper, M. D. Mestayer, R. Fatemi, P. Bosted, J. P. Ball, Y. Prok, A. V. Vlassov, M. Eckhause, M. Sargsyan, Y. Kuang, J. P. Cummings, R. De Vita, E. De Sanctis, S. Boiarinov, D. I. Sober, D. G. Crabb, E. Polli, S. A. Philips, J. W C McNabb, J. Lachniet, D. Rowntree, M. Kossov, Rakhsha Nasseripour, K. Paschke, S. Mehrabyan, B. M. Preedom, M. M. Ito, H. Denizli, Elton Smith, K. S. Egiyan, J. J. Manak, G. Riccardi, B. Carnahan, M. Osipenko, J. R. Ficenec, J. R. Calarco, Shalev Gilad, Roy Thompson, F. Sabatié, M. Anghinolfi, Marco Ripani, K. Beard, M. Battaglieri, R. A. Schumacher, J. P. Santoro, James Mueller, Susan Taylor, A. Coleman, P. D. Rubin, Daniel S. Carman, H. R. Weller, K. Mikhailov, Y. G. Sharabian, E. Anciant, Thierry Auger, G. Gavalian, G. Audit, R. Bradford, C. E. Hyde-Wright, K. Lukashin, H. Egiyan, V. Sapunenko, K. Wang, K. A. Griffioen, L. C. Dennis, L. C. Smith, C. I O Gordon, S. J. Gaff, Dinko Pocanic, B. S. Ishkhanov, M. Taiuti, Alexei V. Klimenko, B. B. Niczyporuk, S. E. Kuhn, C. Salgado, L. Morand, T. A. Forest, M. Khandaker, C. S. Whisnant, J. D. Kellie, L. Y. Murphy, J. H. Kelley, C. Tur, Philip L. Cole, Avraham Klein, G. V. O'Rielly, Silvano Simula, M. Bektasoglu, H. Avakian, N. Pivnyuk, A. Cazes, J. Napolitano, L. M. Qin, Bernhard Mecking, S. Stepanyan, G. E. Dodge, K. V. Dharmawardane, Barry Ritchie, R. J. Feuerbach, Moshe Gai, P. V. Degtyarenko, K. Kim, Cynthia Marie Hadjidakis, Sylvain Bouchigny, M. Klusman, D. G. Jenkins, K. Sabourov, P. Rossi, P. Stoler, Friedrich Klein, R. S. Hicks, Brian Raue, Michael Dugger, H. O. Funsten, A. V. Skabelin, I. Niculescu, Michael Vineyard, S. A. Morrow, S. McAleer, F. Ronchetti, C. Djalali, D. Lawrence, G. S. Mutchler, S. O. Nelson, M. Guidal, G. Niculescu, Daijin Kim, L. Ciciani, Giovanni Ricco, S. Simionatto, K. Hicks, J. Hu, Hall Crannell, J. W. Price, W. J. Briscoe, C. Marchand, K. L. Giovanetti, B. Asavapibhop, Latifa Elouadrhiri, R. C. Minehart, C. A. Meyer, E. Pasyuk, M. Spraker, Larry Weinstein, D. Doughty, R. A. Niyazov, D. Heddle, S. A. Dytman, M. Holtrop, G. V. Fedotov, P. Corvisiero, D. P. Weygand, Patrick Girard, J. Shaw, Michael Wood, V. S. Serov, G. S. Adams, K. Joo, K. Park, U. Thoma, R. Clark, A. Empl, O. Pogorelko, K. Y. Kim, M. Guillo, F. W. Hersman, M. Nozar, E. Golovatch, L. Todor, D. Protopopescu, S. Pozdniakov, Z. L. Zhou, K. Livingston, W. K. Brooks, G. A. Peterson, S. Barrow, C. Cetina, Jens H. Kuhn, Nicola Bianchi, Victor Mokeev, V. Gyurjyan, H. Bagdasaryan, Min Suk Kim, L. Guo, M. Ungaro, Jing Zhao, J. Yun, D. Cords, A. Yegneswaran, Valeria Muccifora, Gerard Gilfoyle, R. A. Miskimen, Volker D. Burkert, A. S. Biselli, D. Branford, M. Mirazita, J. M. Laget, Laird Kramer, A.V. Stavinsky, D. J. Tedeschi, J. S. McCarthy, J. Domingo, P. Dragovitsch, S. Niccolai, and J. Hardie
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Proton, Momentum transfer, Moment (physics), Bibliography, Twist, Nucleon, Resonance (particle physics)
Abstract: We measured the inclusive electron-proton cross section in the nucleon resonance region (W From these data we extracted the structure function F2 and, by including other world data, we studied the Q2 evolution of its moments, Mn(Q2), in order to estimate higher twist contributions. The small statistical and systematic uncertainties of the CLAS data allow a precise extraction of the higher twists and will require significant improvements in theoretical predictions if a meaningful comparison with these new experimental results is to be made.
Published: 2003

174. First Measurement of Transferred Polarization in the Exclusivee→p→e′K+Λ→Reaction

Author: L. Guo, M. Ungaro, R. Fatemi, D. S. Armstrong, A. V. Vlassov, R. C. Minehart, C. A. Meyer, G. V. Fedotov, C. Bennhold, A. Coleman, H. R. Weller, V. Sapunenko, Valeria Muccifora, J. Yun, D. Cords, L. Elouadrhiri, D. P. Weygand, Baile Zhang, J. J. Manak, S. A. Morrow, A. Yegneswaran, Gerard Gilfoyle, M. Eckhause, C. Djalali, J. P. Cummings, Susan Taylor, A. K. Opper, P. Dragovitsch, H. Egiyan, H. Denizli, Laird Kramer, R. A. Miskimen, M. Kossov, P. Ambrozewicz, Rakhsha Nasseripour, R. A. Schumacher, S. Niccolai, A. V. Skabelin, Y. Kuang, D. Branford, L. Ciciani, G. S. Adams, K. S. Egiyan, M. Mirazita, J. M. Laget, S. Stepanyan, Sylvain Bouchigny, L. C. Smith, J. Hardie, S. J. Gaff, S. Simionatto, Alexei V. Klimenko, C. S. Whisnant, E. Polli, K. Joo, B. S. Ishkhanov, L. Todor, D. Protopopescu, K. Mikhailov, P. Rossi, Barry Ritchie, K. L. Giovanetti, B. Asavapibhop, S. Pozdniakov, M. Garçon, A. Cazes, M. U. Mozer, M. Guidal, C. Cetina, E. DeSanctis, W. K. Brooks, B. B. Niczyporuk, A.V. Stavinsky, Jing Zhao, M. Spraker, Larry Weinstein, Michael Vineyard, C. I O Gordon, Z. L. Zhou, G. Niculescu, K. V. Dharmawardane, D. J. Tedeschi, Dinko Pocanic, S. E. Kuhn, N. Pivnyuk, J. Napolitano, M. Holtrop, U. Thoma, E. Anciant, Ji Li, J. R. Calarco, L. Morand, K. A. Griffioen, J. H. Kelley, G. V. O'Rielly, T. A. Forest, C. Tur, O. P. Dzyubak, R. A. Niyazov, K. Livingston, M. Khandaker, J. Lachniet, D. G. Jenkins, K. Sabourov, M. D. Mestayer, K. Paschke, D. Rowntree, P. Corvisiero, V. Gyurjyan, Elton Smith, Daniel S. Carman, S. Mehrabyan, S. McAleer, D. Doughty, D. Heddle, S. Boiarinov, Terry Mart, D. I. Sober, Avraham Klein, R. J. Feuerbach, J. R. Ficenec, M. M. Ito, B. M. Preedom, G. Audit, C. E. Hyde-Wright, J. W C McNabb, G. E. Dodge, M. Anghinolfi, R. S. Hakobyan, P. Stoler, James Mueller, J. P. Santoro, J. W. Price, P. D. Rubin, H. Bagdasaryan, J. Hu, E. N. Golovach, G. A. Peterson, S. O. Nelson, P. V. Degtyarenko, K. Hicks, Y. G. Sharabian, M. Bektasoglu, K. Wang, C. Salgado, M. Battaglieri, M. Guillo, S. Barrow, I. Niculescu, D. Lawrence, R. Bradford, B. A. Mecking, Hall Crannell, C. Marchand, Kwangsoo Kim, M. Ripani, G. Riccardi, Cynthia Marie Hadjidakis, Jens H. Kuhn, C. Butuceanu, Michael Dugger, Nicola Bianchi, H. O. Funsten, W. Kim, M. Bellis, K. Park, J. S. McCarthy, K. Y. Kim, A. Longhi, R. Clark, L. Y. Murphy, A. Empl, O. Pogorelko, K. Lukashin, G. Ricco, Philip L. Cole, M. Osipenko, E. Wolin, F. Sabatié, Moshe Gai, F. W. Hersman, Friedrich Klein, K. Beard, M. Nozar, R. S. Hicks, Brian Raue, Kalvir S. Dhuga, Patrick Girard, J. Shaw, Michael Wood, Steven M. Grimes, G. Gavalian, V. Mokeev, J. P. Ball, Federico Ronchetti, Roy Thompson, Y. Prok, V. S. Serov, L. C. Dennis, B. E. Bonner, H. Avakian, W. J. Briscoe, E. Pasyuk, P. Eugenio, M. Taiuti, S. A. Dytman, J. J. Melone, D. G. Crabb, Volker D. Burkert, A. S. Biselli, G. S. Mutchler, L. M. Qin, R. DeVita, Shalev Gilad, M. Klusman, B. Carnahan, P. Heimberg, J. D. Kellie, and Thierry Auger
Subjects: Physics, Quark, Particle physics, Spectrometer, Spins, Nuclear Theory, Quark model, Hyperon, General Physics and Astronomy, Creation and annihilation operators, Particle accelerator, Polarization (waves), law.invention, Nuclear physics, law, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The first measurements of the transferred polarization for the exclusive (e) over right arrow p --> e'K+(U) over right arrow reaction have been performed at Jefferson Laboratory using the CLAS spectrometer. A 2.567 GeV beam was used to measure the hyperon polarization over Q(2) from 0.3 to 1.5 (GeV/c)(2), W from 1.6 to 2.15 GeV, and over the full K+ center-of-mass angular range. Comparison with predictions of hadrodynamic models indicates strong sensitivity to the underlying resonance contributions. A nonrelativistic quark-model interpretation of our data suggests that the s (s) over bar quark pair is produced with spins predominantly antialigned. Implications for the validity of the most widely used quark-pair creation operator are discussed.
Published: 2003

175. Kathleen Major 1906–2000

Author: G. W. S. Barrow
Abstract: Kathleen Major, a medieval historian with a particular interest in archiving and the study of the diplomatic, was chief officer of the Lincoln Diocesan Record Office and a member of St Hilda's College, Oxford, becoming Principal in 1955 for ten years. She later held a ‘special chair’ in medieval history at Nottingham University and served on the council of the Royal Historical Society. In 1977, Major was elected Fellow of the British Academy and, in retirement, collaborated on extensive surveys of old buildings in Lincoln. Obituary by G. W. S. Barrow FBA.
Published: 2003

176. High Deformation Rate Uniaxial Elongation Flow of Mobile Fluids in Cavitation Bubble Collapse Experiments

Author: Karl Hawkins, Stephen Cordy, P. Rhodri Williams, and M. S. Barrow
Subjects: Viscosity, Materials science, Rheology, Cavitation, Newtonian fluid, Lubrication, Geotechnical engineering, Mechanics, Lubricant, Deformation (meteorology), Petrol engine
Abstract: We report experimental work involving the rapid uniaxial elongation of jets of mobile (i.e. low shear viscosity) liquids formed by the collapse of a gas bubble under a cavitation-generated shockwave. The results of this work establish that the jets experience a significant degree of extensional deformation, at high rates of extension (typically > 1000 s−1 ) which are relevant to considerations of journal bearing lubrication. The results of experiments conducted on samples of commercial multigrade motor lubricants in the 15W40 category indicate a substantially increased resistance to extensional flow when compared with the behaviour of their Newtonian counterparts. Interestingly, the technique is able to distinguish between the rheological properties of lubricants of identical category (15W40) which are formulated for use in different engines (petrol engine and diesel engine, respectively). The lubricant formulated for the latter application is found to exhibit the highest resistance to extensional flow.Copyright © 2003 by ASME
Published: 2003

177. Hyperon Photoproduction in the Nucleon Resonance Region

Author: G. E. Dodge, Jing Zhao, W. Kim, M. Bellis, K. Park, S. McAleer, P. V. Degtyarenko, K. Kim, R. Miskimen, J. Yun, R. Fatemi, R. J. Feuerbach, Bernhard Mecking, K. V. Dharmawardane, Hovanes Egiyan, A. V. Vlassov, J. Lachniet, I. Niculescu, D. Rowntree, G. Riccardi, D. Lawrence, R. DeVita, J. W C McNabb, J. W. Price, A. Empl, O. Pogorelko, K. Lukashin, A. Coleman, H. R. Weller, G. Ricco, R. S. Hakobyan, F. W. Hersman, M. Bektasoglu, A. V. Skabelin, G. S. Mutchler, J. J. Manak, Hall Crannell, K. A. Griffioen, G. Gavalian, V. Sapunenko, Valeria Muccifora, S. A. Philips, P. Heimberg, Philip L. Cole, B. E. Bonner, B. M. Preedom, S. A. Morrow, Shalev Gilad, P. Stoler, H. Avakian, K. S. Egiyan, L. C. Smith, G. V. O'Rielly, Gerard Gilfoyle, S. J. Gaff, Baile Zhang, J. J. Melone, K. Mikhailov, David Jenkins, P. Eugenio, Friedrich Klein, R. A. Schumacher, R. S. Hicks, M. Battaglieri, I. I. Strakovsky, C. Marchand, M. Taiuti, K. Sabourov, W. J. Briscoe, B. P. Quinn, S. A. Dytman, C. I O Gordon, D. I. Sober, W. K. Brooks, S. Taylor, M. Osipenko, J. P. Cummings, E. De Sanctis, C. S. Whisnant, J. P. Santoro, L. Morand, K. Y. Kim, T. A. Forest, D. Branford, R. A. Niyazov, M. Ripani, K. Beard, John T. O'Brien, R. Bradford, S. Stepanyan, M. Mirazita, J. M. Laget, L.C. Dennis, Cynthia Marie Hadjidakis, H. Bagdasaryan, P. Corvisiero, Chaden Djalali, M. Kossov, M. M. Ito, H. Denizli, Kalvir S. Dhuga, A. Weisberg, Sylvain Bouchigny, K. Wang, Avraham Klein, Volker D. Burkert, Federico Ronchetti, C. Butuceanu, Michael Dugger, Y. Kuang, A. S. Biselli, H. O. Funsten, K.H. Hicks, G. S. Adams, M. Guillo, C. Salgado, Patrick Girard, J. Shaw, Rakhsha Nasseripour, K. Joo, S. Strauch, B. B. Niczyporuk, E. Polli, V. Gyurjyan, A. D. Cords, S. O. Nelson, Dinko Pocanic, Michael Wood, U. Thoma, N. Pivnyuk, J. R. Calarco, V. S. Serov, S. E. Kuhn, J. Napolitano, S. Mehrabyan, Ji Li, J. H. Kelley, C. Tur, M. D. Mestayer, Laird Kramer, Alexei V. Klimenko, Elton Smith, B. A. Raue, J. R. Ficenec, Roy Thompson, Barry Ritchie, M. Anghinolfi, E. Wolin, S. Boiarinov, James Mueller, P. D. Rubin, Y. G. Sharabian, J. P. Ball, Y. Prok, M. Eckhause, Latifa Elouadrhiri, R. C. Minehart, C. A. Meyer, C. Cetina, Michael Vineyard, D. G. Crabb, D. P. Weygand, A. Yegneswaran, P. Dragovitsch, S. Niccolai, J. Hardie, A.V. Stavinsky, J. S. McCarthy, J. Hu, B. Carnahan, F. Sabatié, Thierry Auger, B. L. Berman, L. M. Qin, M. Klusman, D. Doughty, D. Heddle, L. Ciciani, Y. Ilieva, S. Simionatto, K. L. Giovanetti, B. Asavapibhop, M. Spraker, Larry Weinstein, Nicola Bianchi, E. Anciant, L. Todor, D. Protopopescu, S. Pozdniakov, Z. L. Zhou, A. Shafi, M. Khandaker, G. A. Peterson, S. Barrow, P. Rossi, E. Pasyuk, D. J. Tedeschi, M. Guidal, G. Niculescu, M. Holtrop, Daniel S. Carman, G. Audit, C. E. Hyde-Wright, M. Nozar, L. Guo, and M. Ungaro
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Particle physics, Hyperon, FOS: Physical sciences, Lambda, Lambda baryon, High Energy Physics - Experiment, Sigma baryon, Baryon, Nuclear physics, High Energy Physics - Experiment (hep-ex), Recoil, PHOTON ENERGIES, Nuclear Experiment (nucl-ex), Nuclear Experiment, Nucleon
Abstract: Cross-sections and recoil polarizations for the reactions gamma + p --> K^+ + Lambda and gamma + p --> K^+ + Sigma^0 have been measured with high statistics and with good angular coverage for center-of-mass energies between 1.6 and 2.3 GeV. In the K^+Lambda channel we confirm a structure near W=1.9 GeV at backward kaon angles, but our data shows a more complex s- and u- channel resonance structure than previously seen. This structure is present at forward and backward angles but not central angles, and its position and width change with angle, indicating that more than one resonance is playing a role. Rising back-angle cross sections at higher energies and large positive polarization at backward angles are consistent with sizable s- or u-channel contributions. None of the model calculations we present can consistently explain these aspects of the data., 5 pages, 3 figures, submitted to Physical Review Letters
Published: 2003
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178. The CEBAF large acceptance spectrometer (CLAS)

Author: B. L. Berman, L. M. Qin, D. Doughty, D. Heddle, M. Klusman, R. C. Minehart, R. J. Feuerbach, P.F. Yergin, D. Tilles, R. A. Schumacher, S. Stepanyan, Avraham Klein, W.S. Duncan, R. Magahiz, J. W. Price, D. J. Tedeschi, C. Riggs, M. Guidal, G. Asryan, Federico Ronchetti, H. Avakian, F. Barbosa, A. Yegneswaran, G. E. Dodge, A. Lake, Thierry Auger, A. K. Opper, P. V. Degtyarenko, I. Niculescu, John T. O'Brien, D. Lawrence, G. Ricco, M. Holtrop, Thomas E. Smith, D. Joyce, W.M. Taylor, Hall Crannell, M. Kossov, E. Golovatch, S. A. Dytman, P. Corvisiero, K. Beard, Philip L. Cole, W. Kim, V. Muccifora, L. Elouadrhiri, N. Bianchi, Barry Ritchie, Robert E. Welsh, J.E. O'Meara, W. Tuzel, Friedrich Klein, R. S. Hicks, A. Coleman, A. Longhi, E. Polli, V. Gyurjyan, M. Witkowski, Bernhard Mecking, Elton Smith, D. I. Sober, W. K. Brooks, J. Gram, E. DeSanctis, V. S. Serov, J. Lachniet, M. Taiuti, M. Anghinolfi, R. Miskimen, V. Frolov, J. Ficenec, James Mueller, M. Battaglieri, D. Kashy, F. Roudot, Y. G. Sharabian, R. DeVita, J. W C McNabb, K. L. Giovanetti, B. Asavapibhop, J. Distelbrink, Larry Weinstein, E. Anciant, L.C. Dennis, S. Taylor, M. M. Ito, J. Connelly, P. Bonneau, C. Martin, G.R. Wilkin, G. S. Adams, Daniel S. Carman, L. C. Smith, J. Yun, D. Cords, G. Audit, David Jenkins, C. E. Hyde-Wright, P. Hemler, S. E. Kuhn, K. Joo, Jim Napolitano, Roy Thompson, G. Riccardi, M. Ripani, A. V. Vlassov, C. Marchand, B. A. Raue, M. Nozar, B. B. Niczyporuk, H. Egiyan, E. Pasyuk, W. J. Briscoe, D. Insley, U. Thoma, Michael Dugger, D. P. Weygand, H. O. Funsten, K. Lukashin, W. R. Dodge, E. Wolin, J. J. Manak, T. Carstens, S. Ahmad, A.V. Stavinsky, G. Jacobs, C. Salgado, J. P. Ball, W. Major, D. G. Crabb, G. Doolittle, L. Y. Murphy, K. S. Egiyan, V. Koubarovski, T.Y. Tung, M. Khandaker, M. Mirazita, S. Barrow, P. Rossi, L. Todor, S. Pozdniakov, M. D. Mestayer, F. W. Hersman, S. Boiarinov, V. Sapunenko, Gerard Gilfoyle, R.C. Cuevas, S. K. Matthews, C. Cetina, Michael Vineyard, S.B. Christo, J. Robb, K.H. Hicks, Laird Kramer, Volker D. Burkert, G. S. Mutchler, M. McMullen, S. A. Philips, and P. Stoler
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Spectrometer, Meson, Particle accelerator, Particle identification, law.invention, Nuclear physics, law, Carbon–fluorine bond, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Instrumentation, Cherenkov radiation
Abstract: The CEBAF large acceptance spectrometer (CLAS) is used to study photo- and electro-induced nuclear and hadronic reactions by providing efficient detection of neutral and charged particles over a good fraction of the full solid angle. A collaboration of about 30 institutions has designed, assembled, and commissioned CLAS in Hall B at the Thomas Jefferson National Accelerator Facility. The CLAS detector is based on a novel six-coil toroidal magnet which provides a largely azimuthal field distribution. Trajectory reconstruction using drift chambers results in a momentum resolution of 0.5% at forward angles. Cherenkov counters, time-of-flight scintillators, and electromagnetic calorimeters provide good particle identification. Fast triggering and high data-acquisition rates allow operation at a luminosity of 10 34 nucleon cm −2 s −1 . These capabilities are being used in a broad experimental program to study the structure and interactions of mesons, nucleons, and nuclei using polarized and unpolarized electron and photon beams and targets. This paper is a comprehensive and general description of the design, construction and performance of CLAS.
Published: 2003

179. Measurement of inclusive spin structure functions of the deuteron

Author: J. Yun, S. E. Kuhn, G. E. Dodge, T. A. Forest, M. Taiuti, G. S. Adams, M. J. Amaryan, E. Anciant, M. Anghinolfi, B. Asavapibhop, G. Asryan, G. Audit, T. Auger, H. Avakian, S. Barrow, M. Battaglieri, K. Beard, M. Bektasoglu, W. Bertozzi, N. Bianchi, A. S. Biselli, S. Boiarinov, P. Bosted, S. Bouchigny, R. Bradford, D. Branford, W. K. Brooks, S. Bueltmann, V. D. Burkert, C. Butuceanu, J. R. Calarco, D. S. Carman, B. Carnahan, C. Cetina, L. Ciciani, P. L. Cole, A. Coleman, J. Connelly, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. Cummings, E. De Sanctis, R. De Vita, P. V. Degtyarenko, R. A. Demirchyan, H. Denizli, L. C. Dennis, K. V. Dharmawardane, C. Djalali, J. Domingo, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, M. Eckhause, Y. V. Efremenko, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, L. Farhi, R. Fatemi, R. J. Feuerbach, J. Ficenec, K. Fissum, A. Freyberger, V. Frolov, H. Funsten, S. J. Gaff, M. Gai, G. Gavalian, V. B. Gavrilov, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, E. Golovatch, C. I. O. Gordon, K. A. Griffioen, M. Guidal, M. Guillo, L. Guo, V. Gyurjyan, C. Hadjidakis, D. Hancock, J. Hardie, D. Heddle, P. Heimberg, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, M. M. Ito, D. Jenkins, K. Joo, C. Keith, J. H. Kelley, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Klusman, M. Kossov, L. H. Kramer, Y. Kuang, J. Kuhn, J. Lachniet, J. M. Laget, D. Lawrence, G. A. Leksin, K. Loukachine, R. W. Major, J. J. Manak, C. Marchand, S. McAleer, J. W. C. McNabb, J. McCarthy, B. A. Mecking, M. D. Mestayer, C. A. Meyer, R. Minehart, M. Mirazita, R. Miskimen, V. Mokeev, S. Morrow, V. Muccifora, J. Mueller, L. Y. Murphy, G. S. Mutchler, J. Napolitano, S. O. Nelson, S. Niccolai, G. Niculescu, B. Niczyporuk, R. A. Niyazov, M. Nozar, G. V. O’Rielly, M. S. Ohandjanyan, A. Opper, M. Ossipenko, K. Park, Y. Patois, G. A. Peterson, S. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, B. M. Preedom, J. W. Price, D. Protopopescu, L. M. Qin, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, S. Rock, F. Ronchetti, P. Rossi, D. Rowntree, P. D. Rubin, K. Sabourov, C. W. Salgado, V. Sapunenko, M. Sargsyan, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, J. Shaw, S. M. Shuvalov, S. Simionatto, A. Skabelin, E. S. Smith, L. C. Smith, T. Smith, D. I. Sober, L. Sorrell, M. Spraker, S. Stepanyan, P. Stoler, S. Taylor, D. Tedeschi, U. Thoma, R. Thompson, L. Todor, T. Y. Tung, C. Tur, M. F. Vineyard, A. Vlassov, K. Wang, L. B. Weinstein, H. Weller, R. Welsh, D. P. Weygand, S. Whisnant, M. Witkowski, E. Wolin, M. H. Wood, A. Yegneswaran, B. Zhang, J. Zhao, Z. Zhou, Institut de Physique Nucléaire d'Orsay (IPNO), 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), CLAS, and Robert, Suzanne
Subjects: Physics, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, FOS: Physical sciences, Spin structure, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Deuterium, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We report the results of a new measurement of spin structure functions of the deuteron in the region of moderate momentum transfer ($Q^2$ = 0.27 -- 1.3 (GeV/c)$^2$) and final hadronic state mass in the nucleon resonance region ($W$ = 1.08 -- 2.0 GeV). We scattered a 2.5 GeV polarized continuous electron beam at Jefferson Lab off a dynamically polarized cryogenic solid state target ($^{15}$ND$_3$) and detected the scattered electrons with the CEBAF Large Acceptance Spectrometer (CLAS). From our data, we extract the longitudinal double spin asymmetry $A_{||}$ and the spin structure function $g_1^d$. Our data are generally in reasonable agreement with existing data from SLAC where they overlap, and they represent a substantial improvement in statistical precision. We compare our results with expectations for resonance asymmetries and extrapolated deep inelastic scaling results. Finally, we evaluate the first moment of the structure function $g_1^d$ and study its approach to both the deep inelastic limit at large $Q^2$ and to the Gerasimov-Drell-Hearn sum rule at the real photon limit ($Q^2 \to 0$). We find that the first moment varies rapidly in the $Q^2$ range of our experiment and crosses zero at $Q^2$ between 0.5 and 0.8 (GeV/c)$^2$, indicating the importance of the $\Delta$ resonance at these momentum transfers., Comment: 13 pages, 8 figures, ReVTeX 4, final version as accepted by Phys. Rev. C
Published: 2003

180. Publisher’s Note:ηPhotoproduction on the Proton for Photon Energies from 0.75 to 1.95 GeV [Phys. Rev. Lett.89, 222002 (2002)]

Author: V. V. Frolov, D. Doughty, R. A. Niyazov, John T. O'Brien, D. Heddle, Barry Ritchie, S. A. Morrow, P. Rubin, M. Eckhause, C. Djalali, P. Dragovitsch, K. A. Griffioen, G. E. Dodge, M. Lucas, P. Corvisiero, D. Hancock, E. S. Smith, Sylvain Bouchigny, P. Rossi, P. V. Degtyarenko, S. Niccolai, Carlos A. Salgado, L. Elouadrhiri, G. Ricco, J. Hardie, K. S. Egiyan, Baile Zhang, R. C. Minehart, C. A. Meyer, G. S. Mutchler, V. Koubarovski, K. Mikhailov, G. Gavalian, A. K. Opper, I. Niculescu, M. M. Ito, I. I. Strakovsky, A.V. Stavinsky, D. Lawrence, M. Spraker, C. Cetina, H. Egiyan, G. V. O'Rielly, E. Wolin, Michael Vineyard, J. P. Cummings, D. P. Weygand, L. Farhi, Y. Kuang, D. J. Tedeschi, C. S. Whisnant, D. G. Jenkins, K. Sabourov, G. P. Capitani, E. Polli, William Brooks, G. S. Adams, R. DeVita, J. W C McNabb, Ji Li, H. Denizli, Hall Crannell, M. U. Mozer, P. Heimberg, M. Witkowski, K. V. Dharmawardane, A. Coleman, P. L. Cole, Cynthia Marie Hadjidakis, Andreas Klein, J. R. Ficenec, S. McAleer, J. D. Kellie, P. Stoler, J. Lachniet, H. R. Weller, M. Kossov, J. R. Calarco, C. Marchand, M. D. Mestayer, J. J. Manak, D. Rowntree, M. Anghinolfi, James Mueller, Michael Dugger, J. Connelly, A. V. Skabelin, K. S. Dhuga, D. Pogorelko, H. O. Funsten, S. O. Nelson, Y. G. Sharabian, Frank Klein, L. C. Smith, Rakhsha Nasseripour, S. J. Gaff, K. Hicks, M. Sanzone-Arenhovel, R. A. Schumacher, S. Boiarinov, B. B. Niczyporuk, B. M. Preedom, S. Strauch, S. A. Philips, W. Kim, N. Pivnyuk, C. I O Gordon, K. Lukashin, J. Napolitano, Moshe Gai, Dinko Pocanic, M. Battaglieri, Shalev Gilad, M. Nozar, S. E. Kuhn, L. Morand, T. A. Forest, B. Carnahan, F. Sabatié, K. L. Giovanetti, B. Asavapibhop, J. H. Kelley, Stephen Taylor, J. P. Ball, Y. Prok, Patrick Girard, R. Bradford, B. A. Mecking, Larry Weinstein, Gerald Feldman, J. Shaw, S. Stepanyan, D. S. Carman, Jens H. Kuhn, A. Longhi, E. Anciant, K. Wang, U. Thoma, Nicola Bianchi, Thierry Auger, Michael Wood, R. S. Hicks, Brian Raue, K. Livingston, V. S. Serov, L. C. Dennis, M. Khandaker, G. Audit, M. Ripani, M. Guillo, C. E. Hyde-Wright, B. L. Berman, L. M. Qin, H. Avakian, R. J. Feuerbach, K. Beard, M. Klusman, D. G. Crabb, G. A. Peterson, W. Major, M. Bektasoglu, S. Barrow, M. Guidal, G. Niculescu, W. J. Briscoe, E. Pasyuk, Federico Ronchetti, M. Holtrop, Thomas E. Smith, S. A. Dytman, L. Todor, J. S. McCarthy, M. Bellis, D. Protopopescu, L. Y. Murphy, S. Pozdniakov, S. Mehrabyan, Z. L. Zhou, R. Clark, A. Shafi, G. Riccardi, J. P. Santoro, Roy Thompson, Jing Zhao, M. Taiuti, V. Sapunenko, Valeria Muccifora, Gerard Gilfoyle, F. W. Hersman, R. A. Miskimen, D. Branford, M. Mirazita, J. M. Laget, Laird Kramer, R. Fatemi, A. V. Vlassov, K. Park, D. I. Sober, Volker D. Burkert, A. S. Biselli, L. Guo, M. Ungaro, K. Joo, J. Yun, D. Cords, A. Yegneswaran, E. DeSanctis, V. Gyurjyan, H. Bagdasaryan, and J. W. Price
Subjects: Physics, Nuclear physics, Photon, Proton, General Physics and Astronomy
Published: 2002

181. Non-impact printer power and motor control system on a chip

Author: S. Barrow and J. Masson
Subjects: Power management, Engineering, business.industry, Electrical engineering, Motor control, Integrated circuit, DC motor, law.invention, law, Hardware_INTEGRATEDCIRCUITS, Digital control, System on a chip, business, Pulse-width modulation, Machine control
Abstract: An integrated circuit chip set has been developed that realizes a color nonimpact printer power supply and motor control system. The two ICs include three switch mode PWM controllers, two unipolar stepper motor drivers, a DC motor H-bridge, a serial control port, and a host of peripheral system functions. Focus is placed on power management and how individual circuits are customized to minimize on-chip power dissipation. >
Published: 2002

182. Measurement of ep--e' ppi+ pi- and baryon resonance analysis

Author: M, Ripani, V D, Burkert, V, Mokeev, M, Battaglieri, R, De Vita, E, Golovach, M, Taiuti, G, Adams, E, Anciant, M, Anghinolfi, B, Asavapibhop, G, Audit, T, Auger, H, Avakian, H, Bagdasaryan, J P, Ball, S, Barrow, K, Beard, M, Bektasoglu, M, Bellis, B L, Berman, N, Bianchi, A S, Biselli, S, Boiarinov, B E, Bonner, S, Bouchigny, R, Bradford, D, Branford, W J, Briscoe, W K, Brooks, J R, Calarco, D S, Carman, B, Carnahan, A, Cazes, C, Cetina, L, Ciciani, P L, Cole, A, Coleman, D, Cords, P, Corvisiero, D, Crabb, H, Crannell, J P, Cummings, E, De Sanctis, P V, Degtyarenko, H, Denizli, L, Dennis, K V, Dharmawardane, C, Djalali, G E, Dodge, D, Doughty, P, Dragovitsch, M, Dugger, S, Dytman, M, Eckhause, H, Egiyan, K S, Egiyan, L, Elouadrhiri, A, Empl, R, Fatemi, G, Fedotov, G, Feldman, R J, Feuerbach, J, Ficenec, T A, Forest, H, Funsten, S J, Gaff, M, Gai, M, Garçon, G, Gavalian, S, Gilad, G P, Gilfoyle, K L, Giovanetti, P, Girard, K, Griffioen, M, Guidal, M, Guillo, L, Guo, V, Gyurjyan, C, Hadjidakis, J, Hardie, D, Heddle, P, Heimberg, F W, Hersman, K, Hicks, R S, Hicks, M, Holtrop, J, Hu, C E, Hyde-Wright, B, Ishkhanov, M M, Ito, D, Jenkins, K, Joo, J H, Kelley, J D, Kellie, M, Khandaker, K Y, Kim, K, Kim, W, Kim, A, Klein, F J, Klein, A V, Klimenko, M, Klusman, M, Kossov, L H, Kramer, Y, Kuang, S E, Kuhn, J, Kuhn, J, Lachniet, J M, Laget, D, Lawrence, Ji, Li, K, Livingston, A, Longhi, K, Lukashin, J J, Manak, C, Marchand, S, McAleer, J, McCarthy, J W C, McNabb, B A, Mecking, M D, Mestayer, C A, Meyer, K, Mikhailov, R, Minehart, M, Mirazita, R, Miskimen, L, Morand, S A, Morrow, M U, Mozer, V, Muccifora, J, Mueller, L Y, Murphy, G S, Mutchler, J, Napolitano, R, Nasseripour, S O, Nelson, S, Niccolai, G, Niculescu, I, Niculescu, B B, Niczyporuk, R A, Niyazov, M, Nozar, G V, O'Rielly, A K, Opper, M, Osipenko, K, Park, E, Pasyuk, G, Peterson, S A, Philips, N, Pivnyuk, D, Pocanic, O, Pogorelko, E, Polli, S, Pozdniakov, B M, Preedom, J W, Price, Y, Prok, D, Protopopescu, L M, Qin, B, Quinn, B A, Raue, G, Riccardi, G, Ricco, B G, Ritchie, F, Ronchetti, P, Rossi, D, Rowntree, P D, Rubin, F, Sabatié, K, Sabourov, C, Salgado, J P, Santoro, V, Sapunenko, R A, Schumacher, V S, Serov, A, Shafi, Y G, Sharabian, J, Shaw, S, Simionatto, A V, Skabelin, E S, Smith, L C, Smith, D I, Sober, M, Spraker, A, Stavinsky, S, Stepanyan, P, Stoler, I I, Strakovsky, S, Taylor, D J, Tedeschi, U, Thoma, R, Thompson, L, Todor, M, Ungaro, M F, Vineyard, A V, Vlassov, K, Wang, L B, Weinstein, H, Weller, D P, Weygand, C S, Whisnant, E, Wolin, M H, Wood, A, Yegneswaran, J, Yun, B, Zhang, J, Zhao, and Z, Zhou
Abstract: The cross section for the reaction ep--e(')ppi(+)pi(-) was measured in the resonance region for 1.4W2.1 GeV and 0.5Q21.5 GeV(2)/c(2) using the CLAS detector at Jefferson Laboratory. The data show resonant structures not visible in previous experiments. The comparison of our data to a phenomenological prediction using available information on N(*) and Delta states shows an evident discrepancy. A better description of the data is obtained either by a sizable change of the properties of the P13(1720) resonance or by introducing a new baryon state, not reported in published analyses.
Published: 2002

183. Extensional Flow of Liquid Jets Formed by Bubble Collapse in Cavitating Motor Oils

Author: S. W. J. Brown, P. R. Williams, and M. S. Barrow
Subjects: Materials science, Bubble, Cavitation, Flow (psychology), Collapse (topology), Mechanics, Extensional definition
Published: 2002

184. Eta photoproduction on the proton for photon energies from 0.75 to 1.95 GeV

Author: R. Fatemi, K. S. Egiyan, V. Koubarovski, A. V. Vlassov, B. Carnahan, F. Sabatié, K. Mikhailov, C. Marchand, M. Taiuti, Thierry Auger, S. A. Morrow, C. Djalali, W. J. Briscoe, E. Pasyuk, M. Lucas, G. Ricco, S. A. Dytman, J. J. Manak, C. E. Hyde-Wright, A.V. Stavinsky, H. R. Weller, Patrick Girard, A. V. Skabelin, G. S. Mutchler, S. Stepanyan, Sylvain Bouchigny, J. Shaw, D. J. Tedeschi, S. McAleer, Philip L. Cole, Moshe Gai, R. A. Niyazov, Michael Wood, B. M. Preedom, V. S. Serov, E. Anciant, J. S. McCarthy, J. P. Santoro, A. K. Opper, M. Sanzone-Arenhovel, John T. O'Brien, D. I. Sober, F. W. Hersman, B. B. Niczyporuk, M. U. Mozer, M. Witkowski, Bernhard Mecking, K. V. Dharmawardane, B. L. Berman, Shalev Gilad, P. Rossi, W. Kim, M. Bellis, K. Park, M. Guillo, Friedrich Klein, P. Corvisiero, H. Egiyan, S. Mehrabyan, M. Khandaker, Gerald Feldman, N. Pivnyuk, J. P. Cummings, J. Napolitano, P. Dragovitsch, M. Ripani, R. S. Hicks, Brian Raue, A. Longhi, R. Clark, Roy Thompson, K. Wang, S. Strauch, C. Salgado, O. Pogorelko, D. Protopopescu, H. Funsten, M. Kossov, K. Lukashin, D. Doughty, D. Heddle, M. Klusman, C. S. Whisnant, S. Pozdniakov, L.C. Dennis, J. R. Calarco, M. M. Ito, L. Todor, J. W. Price, S. Niccolai, J. Hardie, R. J. Feuerbach, Rakhsha Nasseripour, P. Stoler, C. Cetina, S. O. Nelson, R. A. Miskimen, Volker D. Burkert, L. C. Smith, A. S. Biselli, K. Beard, S. J. Gaff, Michael Vineyard, K. A. Griffioen, Kalvir S. Dhuga, L. Y. Murphy, M. Battaglieri, G. Riccardi, R. DeVita, J. W C McNabb, E. Wolin, F. Ronchetti, V. Frolov, Ji Li, G. Gavalian, R. Bradford, Cynthia Marie Hadjidakis, D. Branford, J. Ficenec, J. P. Ball, Y. Prok, P. Heimberg, M. Eckhause, Z. L. Zhou, A. Shafi, G. V. O'Rielly, M. D. Mestayer, Michael Dugger, D. G. Jenkins, K. Sabourov, K. L. Giovanetti, B. Asavapibhop, D. G. Crabb, S. Boiarinov, L. Elouadrhiri, Larry Weinstein, M. Spraker, M. Mirazita, J. M. Laget, J. D. Kellie, I. I. Strakovsky, K. Livingston, Baile Zhang, W. K. Brooks, L. M. Qin, Laird Kramer, L. Farhi, Harut Avakian, V. Sapunenko, Valeria Muccifora, Y. Kuang, G. A. Peterson, E. Polli, Dinko Pocanic, S. Barrow, S. E. Kuhn, J. H. Kelley, Gerard Gilfoyle, Elton Smith, M. Anghinolfi, James Mueller, P. D. Rubin, Y. G. Sharabian, Jens H. Kuhn, Jing Zhao, Nicola Bianchi, Barry Ritchie, R. C. Minehart, C. A. Meyer, S. A. Philips, H. Denizli, K. Hicks, Daniel S. Carman, J. Connelly, G. Audit, M. Bektasoglu, M. Nozar, M. Guidal, G. Niculescu, M. Holtrop, Thomas E. Smith, Hall Crannell, G. E. Dodge, P. V. Degtyarenko, I. Niculescu, D. Lawrence, L. Morand, R. A. Schumacher, C. I O Gordon, T. A. Forest, Avraham Klein, V. Gyurjyan, H. Bagdasaryan, D. Hancock, W. Major, E. DeSanctis, G. P. Capitani, L. Guo, M. Ungaro, J. Lachniet, D. Rowntree, S. Taylor, G. S. Adams, K. Joo, J. Yun, A. Coleman, D. Cords, A. Yegneswaran, U. Thoma, and D. P. Weygand
Subjects: Physics, Particle physics, Photon, Meson, Proton, media_common.quotation_subject, Quark model, General Physics and Astronomy, Constituent quark, Resonance (particle physics), Asymmetry, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Beam (structure), media_common
Abstract: Differential cross sections for gammap-->etap have been measured with tagged real photons for incident photon energies from 0.75 to 1.95 GeV. Mesons were identified by missing mass reconstruction using kinematical information for protons scattered in the production process. The data provide the first extensive angular distribution measurements for the process above W=1.75 GeV. Comparison with preliminary results from a constituent quark model support the suggestion that a third S11 resonance with mass approximately 1.8 GeV couples to the etaN channel.
Published: 2002

185. Erratum: First Measurement of the Double Spin Asymmetry ine→p→→e′π+nin the Resonance Region [Phys. Rev. Lett. 88, 082001 (2002)]

Author: R. De Vita, M. Anghinolfi, V. D. Burkert, G. E. Dodge, R. Minehart, M. Taiuti, H. Weller, G. Adams, M. J. Amaryan, E. Anciant, D. S. Armstrong, B. Asavapibhop, G. Asryan, G. Audit, T. Auger, H. Avakian, H. Bagdasaryan, J. P. Ball, S. Barrow, M. Battaglieri, K. Beard, M. Bektasoglu, N. Bianchi, A. S. Biselli, S. Boiarinov, B. E. Bonner, P. Bosted, S. Bouchigny, D. Branford, W. K. Brooks, S. Bueltmann, J. R. Calarco, G. P. Capitani, D. S. Carman, B. Carnahan, A. Cazes, L. Ciciani, P. L. Cole, A. Coleman, J. Connelly, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, E. De Sanctis, P. V. Degtyarenko, R. Demirchyan, H. Denizli, L. Dennis, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, M. Eckhause, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, L. Farhi, R. Fatemi, R. J. Feuerbach, J. Ficenec, T. A. Forest, V. Frolov, H. Funsten, S. J. Gaff, M. Gai, M. Garçon, G. Gavalian, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, E. Golovatch, K. Griffioen, M. Guidal, M. Guillo, V. Gyurjyan, C. Hadjidakis, D. Hancock, J. Hardie, D. Heddle, P. Heimberg, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, B. S. Ishkanov, M. M. Ito, D. Jenkins, K. Joo, J. H. Kelley, J. D. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, M. Klusman, M. Kossov, L. H. Kramer, Y. Kuang, J. Kuhn, S. E. Kuhn, J. Lachniet, J. M. Laget, D. Lawrence, Ji Li, K. Livingston, A. Longhi, K. Loukachine, M. Lucas, W. Major, J. J. Manak, C. Marchand, S. McAleer, J. McCarthy, J. W. C. McNabb, B. A. Mecking, M. D. Mestayer, C. A. Meyer, K. Mikhailov, M. Mirazita, R. Miskimen, V. Mokeev, V. Muccifora, J. Mueller, G. S. Mutchler, J. Napolitano, S. O. Nelson, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, A. K. Opper, G. V. O'Rielly, M. Osipenko, K. Park, E. Pasyuk, G. Peterson, S. A. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, S. Pozdniakov, B. M. Preedom, J. W. Price, Y. Prok, D. Protopopescu, L. M. Qin, B. A. Raue, A. R. Reolon, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, S. Rock, F. Ronchetti, P. Rossi, D. Rowntree, P. D. Rubin, F. Sabatié, K. Sabourov, C. Salgado, V. Sapunenko, M. Sargsyan, R. A. Schumacher, V. S. Serov, A. Shafi, Y. G. Sharabian, J. Shaw, A. V. Skabelin, E. S. Smith, T. Smith, L. C. Smith, D. I. Sober, L. Sorrell, M. Spraker, A. Stavinsky, S. Stepanyan, P. Stoler, I. I. Strakovsky, S. Taylor, D. J. Tedeschi, R. Thompson, L. Todor, M. Ungaro, M. F. Vineyard, A. V. Vlassov, K. Wang, L. B. Weinstein, A. Weisberg, D. P. Weygand, C. S. Whisnant, E. Wolin, A. Yegneswaran, J. Yun, B. Zhang, J. Zhao, and Z. Zhou
Subjects: Physics, media_common.quotation_subject, Pi, General Physics and Astronomy, Resonance, Angular dependence, Atomic physics, Spin (physics), Asymmetry, Helicity, media_common
Published: 2002

186. Q2Dependence of Quadrupole Strength in theγ*p→Δ+(1232)→pπ0Transition

Author: C. Marchand, T. Y. Tung, M. Witkowski, Bernhard Mecking, C. E. Hyde-Wright, K. V. Dharmawardane, M. J. Amaryan, S. Stepanyan, J. Ficenec, Jochen Heisenberg, G. A. Peterson, S. Barrow, K. Y. Kim, S. A. Philips, Jing Zhao, P. Rossi, Patrick Girard, J. Shaw, Nicola Bianchi, G. E. Dodge, G. S. Adams, P. V. Degtyarenko, K. L. Giovanetti, B. Asavapibhop, J. P. Cummings, L. C. Dennis, B. E. Bonner, R. A. Niyazov, M. Guidal, S. McAleer, H. Avakian, G. Niculescu, W. Kim, K. Loukachine, K. Joo, K. A. Griffioen, J. R. Calarco, P. Corvisiero, Z. L. Zhou, Larry Weinstein, R. De Vita, Michael Vineyard, M. Holtrop, Thomas E. Smith, D. Lawrence, Roy Thompson, A. Longhi, R. A. Demirchyan, M. Battaglieri, F. W. Hersman, K. S. Egiyan, William Bertozzi, E. Anciant, M. Kossov, L. Farhi, V. Sapunenko, H. Egiyan, R. A. Schumacher, M. S. Ohandjanyan, D. P. Weygand, Valeria Muccifora, Daniel S. Carman, S. A. Dytman, A. K. Opper, M. Khandaker, M. D. Mestayer, A. Coleman, V. B. Gavrilov, G. Audit, Y. Patois, H. R. Weller, G. Riccardi, Gerard Gilfoyle, J. W C McNabb, M. Taiuti, H. Funsten, M. Klusman, K. Beard, S. Boiarinov, Federico Ronchetti, J. W. Price, D. Doughty, Airton Deppman, S. Whisnant, B. M. Preedom, D. J. Tedeschi, R. A. Miskimen, L. C. Smith, A. V. Skabelin, D. Heddle, P. Stoler, T. A. Forest, R. J. Feuerbach, G. Ricco, G. S. Mutchler, Kalvir S. Dhuga, Kevin Fissum, B. B. Niczyporuk, M. Mirazita, J. M. Laget, O. Pogorelko, Philip L. Cole, B. Carnahan, K. Hicks, N. Pivnyuk, J. Napolitano, Avraham Klein, R. W. Major, Volker D. Burkert, M. Sanzone, A. S. Biselli, S. K. Matthews, G. P. Capitani, Moshe Gai, Shalev Gilad, Thierry Auger, C. Salgado, Friedrich Klein, Inna Aznauryan, C. Djalali, M. Lucas, A. R. Reolon, S. M. Shuvalov, R. S. Hicks, Brian Raue, M. Guillo, D. Rowntree, D. G. Jenkins, L. Elouadrhiri, Hall Crannell, Robert E. Welsh, P. Dragovitsch, M. M. Ito, W. K. Brooks, L. M. Qin, L. Todor, Y. V. Efremenko, S. Taylor, J. Hardie, M. Bektasoglu, A. V. Vlassov, J. J. Manak, E. De Sanctis, D. I. Sober, Barry Ritchie, E. Wolin, Y. Kuang, E. Polli, H. Denizli, Dinko Pocanic, M. Eckhause, M. Sargsyan, S. E. Kuhn, R. C. Minehart, D. G. Crabb, J. H. Kelley, C. A. Meyer, M. Spraker, Michael Dugger, Elton Smith, M. Anghinolfi, James Mueller, P. D. Rubin, Y. G. Sharabian, M. Ripani, V. Gyurjyan, H. Bagdasaryan, D. Hancock, D. S. Armstrong, J. Yun, D. Cords, and A. Yegneswaran
Subjects: Quark, Physics, Unitarity, 010308 nuclear & particles physics, Nuclear Theory, Scalar (mathematics), General Physics and Astronomy, 01 natural sciences, Nuclear physics, Baryon, Pion, 0103 physical sciences, Quadrupole, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, Multipole expansion
Abstract: Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the Q2 dependence of the magnetic (M1+), electric (E1+), and scalar (S1+) multipoles in the gamma*p-->Delta(+)-->p pi(0) transition. We report new experimental values for the ratios E(1+)/M(1+) and S(1+)/M(1+) over the range Q2 = 0.4-1.8 GeV2, extracted from precision p(e,e(')p)pi(0) data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.
Published: 2002

187. First Measurement of the Double Spin Asymmetry ine→p→→e′π+nin the Resonance Region

Author: Elton Smith, B. S. Ishkanov, E. Golovatch, M. Ungaro, V. Frolov, M. J. Amaryan, D. S. Armstrong, J. R. Calarco, S. A. Philips, J. Ficenec, L. Ciciani, R. A. Schumacher, Shalev Gilad, R. A. Demirchyan, L. C. Dennis, B. E. Bonner, M. Anghinolfi, James Mueller, T. A. Forest, S. Stepanyan, Avraham Klein, H. Avakian, A.V. Stavinsky, P. D. Rubin, Hall Crannell, Y. G. Sharabian, K. L. Giovanetti, B. Asavapibhop, L. Elouadrhiri, M. Osipenko, M. Klusman, G. E. Dodge, B. B. Niczyporuk, D. J. Tedeschi, K. Beard, Kalvir S. Dhuga, J. P. Cummings, Dinko Pocanic, R. C. Minehart, C. A. Meyer, M. Taiuti, N. Pivnyuk, J. Napolitano, R. J. Feuerbach, J. Lachniet, D. Rowntree, J. Yun, D. Cords, A. Yegneswaran, P. V. Degtyarenko, K. Kim, K. Loukachine, I. Niculescu, D. Lawrence, G. S. Adams, K. Joo, A. Cazes, Bernhard Mecking, M. Guidal, G. Niculescu, E. Pasyuk, C. Marchand, Larry Weinstein, S. A. Dytman, I. I. Strakovsky, G. Gavalian, J. S. McCarthy, K. V. Dharmawardane, R. De Vita, G. V. O'Rielly, G. Asryan, M. Holtrop, Thomas E. Smith, K. Park, M. Kossov, S. E. Kuhn, D. P. Weygand, E. Anciant, R. A. Niyazov, B. Carnahan, J. H. Kelley, D. G. Jenkins, M. Battaglieri, W. K. Brooks, A. K. Opper, A. Empl, O. Pogorelko, P. Dragovitsch, F. Sabatié, Daniel S. Carman, Sylvain Bouchigny, K. Sabourov, Federico Ronchetti, L. M. Qin, L. C. Smith, M. Khandaker, S. J. Gaff, G. Riccardi, J. W C McNabb, E. De Sanctis, P. Corvisiero, Victor Mokeev, C. E. Hyde-Wright, G. Audit, L. Sorrell, Thierry Auger, P. Rossi, Barry Ritchie, Baile Zhang, A. Weisberg, A. R. Reolon, D. Protopopescu, J. Hardie, M. Ripani, Michael Vineyard, Patrick Girard, J. Shaw, S. Pozdniakov, M. Garçon, D. Doughty, M. Bektasoglu, S. McAleer, V. Gyurjyan, C. Djalali, W. Kim, Cynthia Marie Hadjidakis, P. Stoler, H. Denizli, D. Heddle, M. Lucas, V. S. Serov, F. W. Hersman, W. Major, K. A. Griffioen, Y. Kuang, Michael Dugger, S. O. Nelson, Z. L. Zhou, H. Bagdasaryan, A. Shafi, H. Egiyan, K. Hicks, Roy Thompson, D. I. Sober, D. Hancock, E. Polli, J. Connelly, A. Coleman, Stephen M. Rock, K. S. Egiyan, M. Guillo, G. Ricco, Ji Li, C. S. Whisnant, A. Longhi, E. Wolin, K. Mikhailov, H. Funsten, P. Bosted, P. Heimberg, J. Hu, J. P. Ball, Y. Prok, J. W. Price, M. Eckhause, Philip L. Cole, M. D. Mestayer, K. Y. Kim, M. Sargsyan, J. D. Kellie, D. G. Crabb, M. Spraker, G. P. Capitani, Nicola Bianchi, K. Livingston, S. Taylor, S. Bueltmann, G. A. Peterson, S. Barrow, R. Fatemi, A. V. Vlassov, S. Boiarinov, B. M. Preedom, A. V. Skabelin, G. S. Mutchler, Moshe Gai, H. R. Weller, Friedrich Klein, R. S. Hicks, K. Wang, Brian Raue, C. Salgado, J. J. Manak, M. M. Ito, L. Todor, Laird Kramer, Jing Zhao, L. Farhi, V. Sapunenko, Valeria Muccifora, Volker D. Burkert, A. S. Biselli, Gerard Gilfoyle, R. A. Miskimen, D. Branford, M. Mirazita, and J. M. Laget
Subjects: Physics, Nuclear physics, media_common.quotation_subject, Cathode ray, General Physics and Astronomy, Resonance, High Energy Physics::Experiment, Nuclear Experiment, Spin (physics), Asymmetry, Helicity, media_common
Abstract: The double spin asymmetry in the (-->)e(-->)p --> e(prime)pi(+)n reaction has been measured for the first time in the resonance region for four-momentum transfer Q2 = 0.35-1.5 GeV(2). Data were taken at Jefferson Lab with the CLAS detector using a 2.6 GeV polarized electron beam incident on a polarized solid NH3 target. Comparison with predictions of phenomenological models shows strong sensitivity to resonance contributions. Helicity-1/2 transitions are found to be dominant in the second and third resonance regions. The measured asymmetry is consistent with a faster rise with Q(2) of the helicity asymmetry A1 for the F(15)(1680) resonance than expected from the analysis of the unpolarized data.
Published: 2002

188. A Study of Cavitation Phenomena Using an Atomic Force Microscope

Author: W.R. Bowen, M. S. Barrow, Chris J. Wright, R. L. Williams, Phylip Rhodri Williams, A. Al-Hussany, and Nidal Hilal
Subjects: Physics::Fluid Dynamics, Surface (mathematics), Colloid, Work (thermodynamics), Materials science, Liquid film, Plane (geometry), Atomic force microscopy, Cavitation, Mechanics, Confined space
Abstract: We report work in which an Atomic Force Microscope (AFM) is used to deform a liquid film between a colloid sphere and a plane surface. Under some circumstances, when the sphere and the surface are pulled apart rapidly, an unexpected transient decrease of the sphere-surface separation is recorded. Numerical simulations of cavitation bubble dynamics are used to explain how the growth of a cavitation bubble may result in the development of sufficiently large negative pressures to account for this phenomenon. The results of this study provide evidence in support of a mechanism mooted by Israelachvilli and co-workers that in the cavitation of liquids within confined spaces, the growth of a cavity may be more damaging than its subsequent collapse.
Published: 2002

189. Pastoral Care before the Parish. Edited by John Blair and Richard Sharpe. Leicester University Press. Leicester, London and New York, 1992. Pp.ix + 298. £45.00

Author: G. W. S. Barrow
Subjects: Cultural Studies, History, Religious studies, Media studies, Pastoral care, Classics
Published: 1993

190. First measurement of the double spin asymmetry in (--)e(--)p--e(prime)pi(+)n in the resonance region

Author: R, De Vita, M, Anghinolfi, V D, Burkert, G E, Dodge, R, Minehart, M, Taiuti, H, Weller, G, Adams, M J, Amaryan, E, Anciant, D S, Armstrong, B, Asavapibhop, G, Asryan, G, Audit, T, Auger, H, Avakian, H, Bagdasaryan, J P, Ball, S, Barrow, M, Battaglieri, K, Beard, M, Bektasoglu, N, Bianchi, A S, Biselli, S, Boiarinov, B E, Bonner, P, Bosted, S, Bouchigny, D, Branford, W K, Brooks, S, Bueltmann, J R, Calarco, G P, Capitani, D S, Carman, B, Carnahan, A, Cazes, L, Ciciani, P L, Cole, A, Coleman, J, Connelly, D, Cords, P, Corvisiero, D, Crabb, H, Crannell, J P, Cummings, E, De Sanctis, P V, Degtyarenko, R, Demirchyan, H, Denizli, L, Dennis, K V, Dharmawardane, K S, Dhuga, C, Djalali, D, Doughty, P, Dragovitsch, M, Dugger, S, Dytman, M, Eckhause, H, Egiyan, K S, Egiyan, L, Elouadrhiri, A, Empl, L, Farhi, R, Fatemi, R J, Feuerbach, J, Ficenec, T A, Forest, V, Frolov, H, Funsten, S J, Gaff, M, Gai, M, Garçon, G, Gavalian, S, Gilad, G P, Gilfoyle, K L, Giovanetti, P, Girard, E, Golovatch, K, Griffioen, M, Guidal, M, Guillo, V, Gyurjyan, C, Hadjidakis, D, Hancock, J, Hardie, D, Heddle, P, Heimberg, F W, Hersman, K, Hicks, R S, Hicks, M, Holtrop, J, Hu, C E, Hyde-Wright, B S, Ishkanov, M M, Ito, D, Jenkins, K, Joo, J H, Kelley, J D, Kellie, M, Khandaker, K Y, Kim, K, Kim, W, Kim, A, Klein, F J, Klein, M, Klusman, M, Kossov, L H, Kramer, Y, Kuang, S E, Kuhn, J, Lachniet, J M, Laget, D, Lawrence, Ji, Li, K, Livingston, A, Longhi, K, Loukachine, M, Lucas, W, Major, J J, Manak, C, Marchand, S, McAleer, J, McCarthy, J W C, McNabb, B A, Mecking, M D, Mestayer, C A, Meyer, K, Mikhailov, M, Mirazita, R, Miskimen, V, Mokeev, V, Muccifora, J, Mueller, G S, Mutchler, J, Napolitano, S O, Nelson, G, Niculescu, I, Niculescu, B B, Niczyporuk, R A, Niyazov, A K, Opper, G V, O'Rielly, M, Osipenko, K, Park, E, Pasyuk, G, Peterson, S A, Philips, N, Pivnyuk, D, Pocanic, O, Pogorelko, E, Polli, S, Pozdniakov, B M, Preedom, J W, Price, Y, Prok, D, Protopopescu, L M, Qin, B A, Raue, A R, Reolon, G, Riccardi, G, Ricco, M, Ripani, B G, Ritchie, S, Rock, F, Ronchetti, P, Rossi, D, Rowntree, P D, Rubin, F, Sabatié, K, Sabourov, C, Salgado, V, Sapunenko, M, Sargsyan, R A, Schumacher, V S, Serov, A, Shafi, Y G, Sharabian, J, Shaw, A V, Skabelin, E S, Smith, T, Smith, L C, Smith, D I, Sober, L, Sorrell, M, Spraker, A, Stavinsky, S, Stepanyan, P, Stoler, I I, Strakovsky, S, Taylor, D J, Tedeschi, R, Thompson, L, Todor, M, Ungaro, M F, Vineyard, A V, Vlassov, K, Wang, L B, Weinstein, A, Weisberg, D P, Weygand, C S, Whisnant, E, Wolin, A, Yegneswaran, J, Yun, B, Zhang, J, Zhao, and Z, Zhou
Abstract: The double spin asymmetry in the (--)e(--)p --e(prime)pi(+)n reaction has been measured for the first time in the resonance region for four-momentum transfer Q2 = 0.35-1.5 GeV(2). Data were taken at Jefferson Lab with the CLAS detector using a 2.6 GeV polarized electron beam incident on a polarized solid NH3 target. Comparison with predictions of phenomenological models shows strong sensitivity to resonance contributions. Helicity-1/2 transitions are found to be dominant in the second and third resonance regions. The measured asymmetry is consistent with a faster rise with Q(2) of the helicity asymmetry A1 for the F(15)(1680) resonance than expected from the analysis of the unpolarized data.
Published: 2001

191. Corrected Article: Exclusive electroproduction of φ mesons at 4.2 GeV [Phys. Rev. C63, 065205 (2001)]

Author: J. Domingo, R. A. Schumacher, R. A. Niyazov, John T. O'Brien, G. S. Mutchler, H. O. Funsten, Dinko Pocanic, E. S. Smith, A. Coleman, H. R. Weller, M. D. Mestayer, J. J. Manak, S. E. Kuhn, P. Corvisiero, S. McAleer, J. H. Kelley, Stephen Taylor, Sylvain Bouchigny, P. Rossi, T. A. Forest, S. Stepanyan, K. S. Dhuga, G. Gavalian, S. Boiarinov, J. R. Ficenec, M. Anghinolfi, K. A. Griffioen, J. R. Calarco, S. A. Philips, L. C. Dennis, B. E. Bonner, H. Avakian, K. S. Egiyan, M. M. Ito, Laird Kramer, B. B. Niczyporuk, Jing Zhao, James Mueller, L. C. Smith, S. J. Gaff, K. Mikhailov, Shalev Gilad, G. E. Dodge, J. S. McCarthy, M. Taiuti, R. Fatemi, Y. G. Sharabian, J. Hu, M. Ripani, N. Pivnyuk, K. Lukashin, J. Napolitano, E. Wolin, Michael Vineyard, P. Dragovitsch, G. V. O'Rielly, Baile Zhang, M. Guidal, A. K. Opper, W. J. Briscoe, E. Pasyuk, M. Battaglieri, A. V. Vlassov, D. G. Jenkins, K. Park, B. A. Mecking, J. P. Ball, D. S. Carman, P. Rubin, M. Eckhause, H. Egiyan, C. Djalali, S. Whisnant, B. M. Preedom, K. Sabourov, G. Niculescu, J. P. Cummings, L. M. Qin, S. A. Dytman, R. A. Miskimen, Volker D. Burkert, A. S. Biselli, D. G. Crabb, J. Hardie, V. Gyurjyan, E. Polli, P. Stoler, Kevin Fissum, M. Holtrop, A.V. Stavinsky, D. Branford, M. Guillo, M. Kossov, M. Mirazita, S. O. Nelson, K. Wang, W. Kim, J. M. Laget, S. Pozdniakov, L. Elouadrhiri, D. J. Tedeschi, K. Hicks, C. Salgado, Robert E. Welsh, Roy Thompson, K. Paschke, I. I. Strakovsky, Z. L. Zhou, M. Klusman, Andreas Klein, V. Sapunenko, Valeria Muccifora, J. W. Price, Kwangsoo Kim, G. Riccardi, A. Longhi, G. S. Adams, R. Clark, Gerard Gilfoyle, R. DeVita, J. W C McNabb, A. Empl, Pavel Degtiarenko, E. De Sanctis, G. Audit, O. Pogorelko, C. E. Hyde-Wright, D. I. Sober, R. J. Feuerbach, K. Beard, Frank Klein, G. A. Peterson, S. Barrow, M. Bektasoglu, K. Joo, Patrick Girard, J. Shaw, J. Yun, D. Cords, A. Yegneswaran, Nicola Bianchi, B. Carnahan, F. Sabatié, V. S. Serov, Thierry Auger, A. R. Reolon, A. P. Freyberger, Federico Ronchetti, G. Ricco, Moshe Gai, R. S. Hicks, Brian Raue, Barry Ritchie, R. C. Minehart, C. A. Meyer, L. Ciciani, S. Simionatto, K. L. Giovanetti, B. Asavapibhop, Larry Weinstein, William Bertozzi, E. Anciant, M. Khandaker, D. P. Weygand, D. Doughty, D. Heddle, A. V. Skabelin, K. Kim, I. Niculescu, D. Lawrence, William Brooks, Hall Crannell, C. Marchand, D. Rowntree, L. Yanik, P. L. Cole, and F. W. Hersman
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, Meson production, Proton, Meson, Vector meson dominance, Production (computer science), HERA
Abstract: We studied the exclusive reaction $e\stackrel{\ensuremath{\rightarrow}}{p}{e}^{\ensuremath{'}}{p}^{\ensuremath{'}}\ensuremath{\varphi}$ using the $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\varphi}}{K}^{+}{K}^{\ensuremath{-}}$ decay mode. The data were collected using a 4.2 GeV incident electron beam and the CEBAF Large Acceptance Spectrometer (CLAS) at the Thomas Jefferson National Accelerator Facility. Our experiment covers the range in ${Q}^{2}$ from 0.7 to 2.2 ${\mathrm{GeV}}^{2},$ and W from 2.0 to 2.6 GeV. Taken together with all previous data, we find a consistent picture of $\ensuremath{\varphi}$ production on the proton. Our measurement shows the expected decrease of the t slope with the vector-meson formation time $c\ensuremath{\Delta}\ensuremath{\tau}$ below 2 fm. At $〈c\ensuremath{\Delta}\ensuremath{\tau}〉=0.6$ fm, we measure ${b}_{\ensuremath{\varphi}}=2.27\ifmmode\pm\else\textpm\fi{}0.42$ ${\mathrm{GeV}}^{\ensuremath{-}2}.$ The cross section dependence on W as ${W}^{0.2\ifmmode\pm\else\textpm\fi{}0.1}$ at ${Q}^{2}=1.3$ ${\mathrm{GeV}}^{2}$ was determined by comparison with $\ensuremath{\varphi}$ production at HERA after correcting for threshold effects. This is the same dependence as observed in photoproduction.
Published: 2001

192. Photoproduction of theρ0Meson on the Proton at Large Momentum Transfer

Author: V. Frolov, M. J. Amaryan, V. Mokeev, A. Cazes, J. P. Cummings, R. De Vita, P. Dragovitsch, Roy Thompson, R. Demirchyan, K. V. Dharmawardane, G. Asryan, R. A. Niyazov, M. Kossov, Volker D. Burkert, A. S. Biselli, J. Hardie, K. L. Giovanetti, B. Asavapibhop, R. A. Miskimen, John T. O'Brien, M. Spraker, Larry Weinstein, Laird Kramer, G. S. Adams, B. L. Berman, P. Corvisiero, G. Riccardi, M. Taiuti, M. Battaglieri, Susan Taylor, L. M. Qin, K. Joo, K. Beard, E. Anciant, L. Todor, D. Protopopescu, Kalvir S. Dhuga, K. S. Egiyan, B. A. Mecking, J. R. Calarco, A.V. Stavinsky, M. Klusman, M. M. Ito, H. Egiyan, W. Kim, R. W. Major, E. Wolin, J. W C McNabb, A. P. Freyberger, K. Mikhailov, D. J. Tedeschi, M. Khandaker, D. Branford, K. A. Griffioen, M. Mirazita, Z. L. Zhou, A. Shafi, Dinko Pocanic, L. Farhi, M. Sanzone-Arenhovel, Federico Ronchetti, J. M. Laget, B. B. Niczyporuk, D. Doughty, Shalev Gilad, B. Carnahan, G. Ricco, D. G. Crabb, N. Pivnyuk, D. Heddle, C. S. Whisnant, S. E. Kuhn, J. Napolitano, P. Stoler, A. Coleman, Philip L. Cole, H. R. Weller, Thierry Auger, A. Weisberg, A. R. Reolon, Moshe Gai, K. Sabourov, S. O. Nelson, J. Shaw, K. Hicks, M. Eckhause, P. Rossi, C. Djalali, Michael Wood, M. Lucas, R. J. Feuerbach, Friedrich Klein, R. S. Hicks, Brian Raue, V. S. Serov, V. Sapunenko, Valeria Muccifora, Michael Dugger, J. H. Kelley, F. W. Hersman, H. O. Funsten, M. Guillo, S. McAleer, J. S. McCarthy, A. V. Vlassov, Gerard Gilfoyle, O. Pogorelko, K. Lukashin, L. C. Dennis, L. C. Smith, S. J. Gaff, Nicola Bianchi, H. Avakian, L. Elouadrhiri, G. S. Mutchler, Jing Zhao, W. J. Briscoe, M. Ripani, S. A. Dytman, Elton Smith, E. N. Golovach, G. A. Peterson, W. K. Brooks, S. Barrow, J. R. Ficenec, D. S. Armstrong, M. Anghinolfi, J. Yun, D. Cords, James Mueller, A. Yegneswaran, P. D. Rubin, Y. G. Sharabian, E. DeSanctis, Baile Zhang, J. J. Manak, A. K. Opper, Y. Kuang, V. Gyurjyan, E. Polli, D. I. Sober, J. W. Price, D. Hancock, H. Denizli, A. V. Skabelin, R. C. Minehart, C. A. Meyer, D. P. Weygand, Barry Ritchie, Daniel S. Carman, G. Audit, C. E. Hyde-Wright, M. Bektasoglu, S. A. Philips, M. Guidal, M. D. Mestayer, M. Holtrop, Thomas E. Smith, S. Boiarinov, R. A. Schumacher, T. A. Forest, S. Stepanyan, Avraham Klein, Hall Crannell, C. Cetina, C. Marchand, G. E. Dodge, Michael Vineyard, B. M. Preedom, P. V. Degtyarenko, D. Lawrence, G. P. Capitani, C. Salgado, and D. Rowntree
Subjects: Nuclear physics, Physics, Proton, Meson, Momentum transfer, General Physics and Astronomy
Published: 2001

193. Photoproduction of the rho(0) meson on the proton at large momentum transfer

Author: M, Battaglieri, E, Anciant, M, Anghinolfi, R, De Vita, E, Golovach, J M, Laget, V, Mokeev, M, Ripani, G, Adams, M J, Amaryan, D S, Armstrong, B, Asavapibhop, G, Asryan, G, Audit, T, Auger, H, Avakian, S, Barrow, K, Beard, M, Bektasoglu, B L, Berman, N, Bianchi, A S, Biselli, S, Boiarinov, D, Branford, W J, Briscoe, W K, Brooks, V D, Burkert, J R, Calarco, G P, Capitani, D S, Carman, B, Carnahan, A, Cazes, C, Cetina, P L, Cole, A, Coleman, D, Cords, P, Corvisiero, D, Crabb, H, Crannell, J P, Cummings, E, DeSanctis, P V, Degtyarenko, R, Demirchyan, H, Denizli, L, Dennis, K V, Dharmawardane, K S, Dhuga, C, Djalali, G E, Dodge, D, Doughty, P, Dragovitsch, M, Dugger, S, Dytman, M, Eckhause, H, Egiyan, K S, Egiyan, L, Elouadrhiri, L, Farhi, R J, Feuerbach, J, Ficenec, T A, Forest, A P, Freyberger, V, Frolov, H, Funsten, S J, Gaff, M, Gai, S, Gilad, G P, Gilfoyle, K L, Giovanetti, K, Griffioen, M, Guidal, M, Guillo, V, Gyurjyan, D, Hancock, J, Hardie, D, Heddle, F W, Hersman, K, Hicks, R S, Hicks, M, Holtrop, C E, Hyde-Wright, M M, Ito, K, Joo, J H, Kelley, M, Khandaker, W, Kim, A, Klein, F J, Klein, M, Klusman, M, Kossov, L H, Kramer, Y, Kuang, S E, Kuhn, D, Lawrence, M, Lucas, K, Lukashin, R W, Major, J J, Manak, C, Marchand, S, McAleer, J, McCarthy, J W, McNabb, B A, Mecking, M D, Mestayer, C A, Meyer, K, Mikhailov, R, Minehart, M, Mirazita, R, Miskimen, V, Muccifora, J, Mueller, G S, Mutchler, J, Napolitano, S O, Nelson, B B, Niczyporuk, R A, Niyazov, J T, O'Brien, A K, Opper, G, Peterson, S A, Philips, N, Pivnyuk, D, Pocanic, O, Pogorelko, E, Polli, B M, Preedom, J W, Price, D, Protopopescu, L M, Qin, B A, Raue, A R, Reolon, G, Riccardi, G, Ricco, B G, Ritchie, F, Ronchetti, P, Rossi, D, Rowntree, P D, Rubin, K, Sabourov, C, Salgado, M, Sanzone-Arenhovel, V, Sapunenko, R A, Schumacher, V S, Serov, A, Shafi, Y G, Sharabian, J, Shaw, A V, Skabelin, E S, Smith, T, Smith, L C, Smith, D I, Sober, M, Spraker, A, Stavinsky, S, Stepanyan, P, Stoler, M, Taiuti, S, Taylor, D J, Tedeschi, L, Todor, R, Thompson, M F, Vineyard, A V, Vlassov, L B, Weinstein, A, Weisberg, H, Weller, D P, Weygand, C S, Whisnant, E, Wolin, M, Wood, A, Yegneswaran, J, Yun, B, Zhang, J, Zhao, and Z, Zhou
Abstract: The differential cross section, d sigma/dt, for rho(0) meson photoproduction on the proton above the resonance region was measured up to a momentum transfer -t = 5 GeV2 using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The rho(0) channel was extracted from the measured two charged-pion cross sections by fitting the pi(+)pi(-) and p pi(+) invariant masses. The low momentum transfer region shows the typical diffractive pattern expected from Reggeon exchange. The flatter behavior at large -t cannot be explained solely in terms of QCD-inspired two-gluon exchange models. The data indicate that other processes, like quark interchange, are important to fully describe rho photoproduction.
Published: 2001

194. Das europäische Mittelalter im Spannungsbogen des Vergleichs

Author: Svetlana Luchitskaja, Otto Gerhard Oexle, Michael Borgolte, Gadi Algazi, Sverre Bagge, Johannes Helmrath, János M. Bak, Francois Menant, Karl-Heinz Spieß, Patrick J. Geary, Jan Maria Piskorski, Jerzy Strzelczyk, David L. d'Avray, Hans-Werner Goetz, Sławomir Gawlas, Bernd Schneidmüller, Frank Rexroth, Ralf Lusiardi, Daniela Rando, Geoffrey W. S. Barrow, Marina Paramonova, and Tore Nyberg
Published: 2001

195. Observation of Exclusive Deeply Virtual Compton Scattering in Polarized Electron Beam Asymmetry Measurements

Author: K.H. Hicks, M. M. Ito, K. Mikhailov, Laird Kramer, D. J. Tedeschi, M. Guidal, C. Marchand, G. Niculescu, Daijin Kim, V. Sapunenko, M. Holtrop, D. Dore, Patrick Girard, A. Shafi, M. Klusman, L. Yanik, Sylvain Bouchigny, Daniel S. Carman, J. P. Cummings, L. Murphy, R. De Vita, V. S. Serov, A. Yegneswaran, A. Coleman, Gerard Gilfoyle, G. Audit, G. Gavalian, W. Kim, V. Muccifora, K. Park, M. Ripani, S. Whisnant, B. M. Preedom, Robert E. Welsh, I. Popa, K. A. Griffioen, R. A. Schumacher, E. Anciant, P.Y. Bertin, M. Bektasoglu, R. C. Minehart, E. De Sanctis, Elton Smith, G. Feldman, Volker D. Burkert, C. A. Meyer, A. S. Biselli, P. Dragovitsch, G. V. O'Rielly, L. Elouadrhiri, J. R. Calarco, J. Yun, D. Cords, H. Egiyan, E. Polli, Cynthia Marie Hadjidakis, A. K. Opper, S. A. Philips, A. Empl, O. Pogorelko, S. O. Nelson, S. Niccolai, D. Rowntree, M. Battaglieri, D. I. Sober, W. K. Brooks, K. Sabourov, A. Longhi, Jing Zhao, L. C. Dennis, B. E. Bonner, J. Hardie, E. Pasyuk, Igor Strakovsky, H. Avakian, L. M. Qin, M. Anghinolfi, James Mueller, L. C. Maximon, M. Khandaker, P. Heimberg, N. Pivnyuk, Pavel Degtiarenko, S. McAleer, R. Fatemi, B.L. Berman, Roy Thompson, A.V. Stavinsky, T. A. Forest, G. A. Peterson, P. D. Rubin, A. V. Vlassov, J. Ficenec, F. Ronchetti, L. Ciciani, R. J. Feuerbach, Mestayer, S. A. Dytman, E. Wolin, S. Simionatto, Avraham Klein, Shalev Gilad, K. Wang, C. Salgado, Dinko Pocanic, K. Beard, Bernhard Mecking, K. V. Dharmawardane, H. Funsten, K. L. Giovanetti, B. Asavapibhop, J. W. Price, R. Miskimen, J. P. Ball, K. S. Dhuga, P. Stoler, M. Eckhause, Larry Weinstein, D. Doughty, S. E. Kuhn, Charles Hyde, S. Barrow, P. Rossi, K. Lukashin, Hall Crannell, G. Riccardi, D. Heddle, J. S. McCarthy, J. H. Kelley, J. J. Manak, M. Guillo, J. W C McNabb, Yu.G. Sharabian, David A. Jenkins, D. G. Crabb, K. Y. Kim, S. Stepanyan, M. Taiuti, John T. O'Brien, M. Kossov, D. Protopopescu, C. Djalali, Baile Zhang, J. Hu, Barry Ritchie, Kevin Fissum, S. Pozdniakov, M. Garçon, D. Branford, C. Cetina, G. E. Dodge, A.R. Reolon, Z. L. Zhou, M. Mirazita, J. M. Laget, K. Kim, H. R. Weller, J. Shaw, P. Corvisiero, I. Niculescu, D. Lawrence, Jim Napolitano, B. A. Raue, L. Morand, F. W. Hersman, H. Denizli, K. S. Egiyan, Michael Vineyard, V. Gyurjyan, Nicola Bianchi, R. Suleiman, A. V. Skabelin, G. S. Mutchler, S. Boiarinov, R. A. Niyazov, S. Taylor, G. S. Adams, B. Carnahan, F. Sabatié, K. Joo, Thierry Auger, W.J. Briscoe, L. Todor, L. C. Smith, S. J. Gaff, D. P. Weygand, G. Ricco, Philip L. Cole, Moshe Gai, Friedrich Klein, R. S. Hicks, and A. P. Freyberger
Subjects: Quantum chromodynamics, Physics, Elastic scattering, Scattering, media_common.quotation_subject, Compton scattering, General Physics and Astronomy, Asymmetry, Nuclear physics, Amplitude, High Energy Physics::Experiment, Nuclear Experiment, Beam (structure), Spin-½, media_common
Abstract: We report the first results of the beam spin asymmetry measured in the reaction e + p -> e + p + gamma at a beam energy of 4.25 GeV. A large asymmetry with a sin(phi) modulation is observed, as predicted for the interference term of Deeply Virtual Compton Scattering and the Bethe-Heitler process. The amplitude of this modulation is alpha = 0.202 +/- 0.028. In leading-order and leading-twist pQCD, the alpha is directly proportional to the imaginary part of the DVCS amplitude.
Published: 2001

196. Separated spectral functions for the quasifree12C(e,e′p)reaction

Author: R. E. Segel, W. Kim, K. Beard, R. Mohring, A.O. Mateos, D. van Westrum, S. A. Wood, J. C. Yang, S. Barrow, P. Stoler, C. E. Keppel, M. A. Khandaker, John C. Mitchell, C. Jackson, L. G. Tang, S. Danagoulian, T. Eden, Gabriel Niculescu, R. J. Sutter, D. Abbott, R. Sawafta, H. T. Fortune, C. Bochna, Alan M. Nathan, J. Yu, P. E. Bosted, I. Niculescu, O. K. Baker, Ketevi Assamagan, J. W. Martin, Donal Day, B. Terburg, T. P. Welch, E. R. Kinney, J. Reinhold, A. Ahmidouch, V. Tadevosyan, D. Beatty, Kevin Bailey, Ross Milner, E. Meier, C. Cothran, Ts A. Amatuni, E. Belz, Paul Gueye, R. E. Chrien, B. Zihlmann, D. F. Geesaman, Avraham Klein, C. Salgado, H. Breuer, Wolfgang Lorenzon, J. Arrington, D. DeSchepper, J.-E. Ducret, J. A. Dunne, J.-O. Hansen, D. G. Meekins, J. P. Schiffer, W. Hinton, R. Suleiman, E. J. Beise, S. B. Kaufman, Rolf Ent, H. E. Jackson, C. Yan, R. Madey, C. F. Williamson, V. Frolov, H. Mkrtchyan, R. D. Carlini, R. J. Holt, D. H. Potterveld, J. W. Price, W. Zhao, J. Cha, James J. Kelly, Ronald Gilman, Dipangkar Dutta, N. S. Chant, C. S. Armstrong, Pete Markowitz, E. E.W. Bruins, K. McFarlane, David Mack, S. Beedoe, C. E. Jones, L. H. Kramer, Thomas O'Neill, M. A. Miller, F. Duncan, Haiyan Gao, W. J. Cummings, D. Koltenuk, and B. Zeidman
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Missing energy, Proton, Nuclear Theory, Momentum transfer, Nuclear physics, Momentum, Parallel kinematics, Transverse plane, Physics::Accelerator Physics, Atomic physics, Nuclear Experiment, Nucleon
Abstract: A separation of the longitudinal and transverse 12 C(e, e8p) cross sections in the quasifree region has been performed in parallel kinematics at Q 2 of 0.64 and 1.8 GeV 2 for initial proton momentum ,80 MeV. The separated transverse and longitudinal spectral functions at Q 2 50.64 GeV 2 show significant differences for missing energy between 25 and 60 MeV indicating a breakdown in the single nucleon knockout picture. The transverse spectral functions exhibit definite momentum transfer dependence.
Published: 2000

197. Coherentπ0photoproduction on the deuteron up to 4 GeV

Author: M. Witkowski, R. E. Segel, D. H. Potterveld, H. Breuer, C. Bochna, B. Zeidman, Ronald Ransome, D. G. Meekins, J. Cha, G. Collins, S. Barrow, R. Mohring, Thomas O'Neill, P. Stoler, Dipangkar Dutta, V. Frolov, S. F. Pate, H. Mkrtchyan, H. T. Fortune, E. J. Beise, D. Abbott, S. A. Wood, P. M. Rutt, J.-O. Hansen, N. Simicevic, C. S. Armstrong, Alan M. Nathan, R. Madey, Pete Markowitz, E. R. Kinney, R. Suleiman, David Mack, D. Beatty, C. Cothran, L. G. Tang, C. E. Keppel, W. Hinton, P. E. Bosted, I. Niculescu, S. E. Williamson, Haiyan Gao, R. V. Cadman, B. W. Filippone, J. Reinhold, O. K. Baker, W. F. Vulcan, Douglas H Beck, L. Cardman, Ronald Gilman, G. J. Kumbartzki, J. A. Dunne, R. D. McKeown, T. Eden, R. D. Carlini, A. Ahmidouch, M. Harvey, K. McFarlane, J. H. Mitchell, R. J. Holt, M. Khandaker, Ketevi Assamagan, Paul Gueye, A. F. Lung, C. Salgado, M. A. Miller, D. F. Geesaman, F. Duncan, G. Rakness, G. Savage, J. W. Price, J. Napolitano, B. Terburg, D. van Westrum, H. E. Jackson, B. R. Owen, S. Danagoulian, Gabriel Niculescu, Rolf Ent, C. Yan, Z. E. Meziani, J. Arrington, K. Gustafsson, E. J. Brash, D. Koltenuk, J. E. Belz, S. Beedoe, W. J. Cummings, T. A. Forest, N. S. Chant, and Avraham Klein
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Amplitude, Pion, Photon, Meson, Scattering, Hadron, Elementary particle, Photon energy, Nuclear Experiment
Abstract: The differential cross section for ^2H(γ,d)π^0 has been measured at deuteron center-of-mass angles of 90° and 136°. This work reports the first data for this reaction above a photon energy of 1 GeV, and permits a test of the apparent constituent counting rule and reduced nuclear amplitude behavior as observed in elastic ed scattering. Measurements were performed up to a photon energy of 4.0 GeV, and are in good agreement with previous lower energy measurements. Overall, the data are inconsistent with both constituent-counting rule and reduced nuclear amplitude predictions.
Published: 1999

198. The tribes of North Britain revisited

Author: G W S Barrow
Subjects: Ecology, Insect Science, Ecology, Evolution, Behavior and Systematics
Abstract: Argues against the idea that by the Roman period the Caledones may have been restricted to the Great Glen and the upper glens of the Grampians. AR
Published: 1990

199. One nurse's story

Author: S, Barrow
Subjects: Adolescent, Epinephrine, Injections, Subcutaneous, Humans, Female, Self Administration, Sympathomimetics, Asthma, Cardiopulmonary Resuscitation
Published: 1998

200. Self-administered epinephrine: a guide

Author: S, Barrow and B, Higgins
Subjects: Epinephrine, Patient Education as Topic, Injections, Subcutaneous, Humans, Self Administration, Sympathomimetics, Anaphylaxis
Published: 1998

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