41 results on '"Turchinetz, W."'
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2. Measurement of the partial cross sections σtT, σlT, and (σT+ σl) of the 1H(e,e′π+)n reaction in the Δ(1232) resonance
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Kirkpatrick, J.M. Sparveris, N.F. Nakagawa, I. Bernstein, A.M. Alarcon, R. Bertozzi, W. Botto, T. Bourgeois, P. Calarco, J. Casagrande, F. Distler, M.O. Dow, K. Farkondeh, M. Georgakopoulos, S. Gilad, S. Hicks, R. Holtrop, A. Hotta, A. Jiang, X. Karabarbounis, A. Kowalski, S. Milner, R. Miskimen, R. Papanicolas, C.N. Sarty, A.J. Sato, Y. Širca, S. Shaw, J. Six, E. Stave, S. Stiliaris, E. Tamae, T. Tsentalivich, G. Tschalaer, C. Turchinetz, W. Zhou, Z.-L. Zwart, T.
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Nuclear Experiment - Abstract
We report precision 1H(e,e′π+)n measurements in the Δ(1232) resonance at Q2=0.127(GeV/c)2 obtained at the MIT-Bates out-of-plane scattering facility. These are the lowest, but nonzero, Q2 measurements in the π+ channel. The data offer tests of the theoretical calculations, particularly of the background amplitude contributions. The chiral effective field theory and Sato-Lee model calculations are not in agreement with this experiment. © 2011 American Physical Society.
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- 2011
3. Measurements of the generalized electric and magnetic polarizabilities of the proton at low Q2 using the virtual Compton scattering reaction
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Bourgeois, P. Sato, Y. Shaw, J. Alarcon, R. Bernstein, A.M. Bertozzi, W. Botto, T. Calarco, J. Casagrande, F. Distler, M.O. Dow, K. Farkondeh, M. Georgakopoulos, S. Gilad, S. Hicks, R. Holtrop, M. Hotta, A. Jiang, X. Karabarbounis, A. Kirkpatrick, J. Kowalski, S. Milner, R. Miskimen, R. Nakagawa, I. Papanicolas, C.N. Sarty, A.J. Sirca, S. Six, E. Sparveris, N.F. Stave, S. Stiliaris, E. Tamae, T. Tsentalovich, G. Tschalaer, C. Turchinetz, W. Zhou, Z.-L. Zwart, T.
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Nuclear Experiment - Abstract
Experimental details of a virtual Compton scattering (VCS) experiment performed on the proton at the MIT-Bates out-of-plane scattering facility are presented. The VCS response functions PLL-PTT/P TT and PLT have been measured at Q2=0.057GeV2/c2. The generalized electric and magnetic polarizabilities, α(Q2) and β(Q2), and the mean-square electric polarizability radius rα2 are obtained from a dispersion analysis of the data. The results are in good agreement with O(p3) heavy baryon chiral perturbation and indicate the dominance of mesonic effects in the polarizabilities. © 2011 American Physical Society.
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- 2011
4. The Charge Form Factor of the Neutron at Low Momentum Transfer from the $^{2}\vec{\rm H}(\vec{\rm e},{\rm e}'{\rm n}){\rm p}$ Reaction
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Geis, E., Ziskin, V., Akdogan, T., Arenhoevel, H., Alarcon, R., Bertozzi, W., Booth, E., Botto, T., Calarco, J., Clasie, B., Crawford, C. B., DeGrush, A., Donnelly, T. W., Dow, K., Farkhondeh, M., Fatemi, R., Filoti, O., Franklin, W., Gao, H., Gilad, S., Hasell, D., Karpius, P., Kohl, M., Kolster, H., Lee, T., Maschinot, A., Matthews, J., McIlhany, K., Meitanis, N., Milner, R. G., Rapaport, J., Redwine, R. P., Seely, J., Shinozaki, A., Sirca, S., Sindile, A., Six, E., Smith, T., Steadman, M., Tonguc, B., Tschalaer, C., Tsentalovich, E., Turchinetz, W., Xiao, Y., Xu, W., Zhang, C., Zhou, Z., and Zwart, T.
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Nuclear Theory ,FOS: Physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
We report new measurements of the neutron charge form factor at low momentum transfer using quasielastic electrodisintegration of the deuteron. Longitudinally polarized electrons at an energy of 850 MeV were scattered from an isotopically pure, highly polarized deuterium gas target. The scattered electrons and coincident neutrons were measured by the Bates Large Acceptance Spectrometer Toroid (BLAST) detector. The neutron form factor ratio $G^{n}_{E}/G^{n}_{M}$ was extracted from the beam-target vector asymmetry $A_{ed}^{V}$ at four-momentum transfers $Q^{2}=0.14$, 0.20, 0.29 and 0.42 (GeV/c)$^{2}$., 5 pages, 3 figures, submitted to Phys. Rev. Lett
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- 2008
5. Measurement of the proton electric to magnetic form factor ratio from \vec ^1H(\vec e, e'p)
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Crawford, C. B., Sindile, A., Akdogan, T., Alarcon, R., Bertozzi, W., Booth, E., Botto, T., Calarco, J., Clasie, B., DeGrush, A., Donnelly, T. W., Dow, K., Dutta, D., Farkhondeh, M., Fatemi, R., Filoti, O., Franklin, W., Gao, H., Geis, E., Gilad, S., Haeberli, W., Hasell, D., Hersman, W., Holtrop, M., Karpius, P., Kohl, M., Kolster, H., Lee, T., Maschinot, A., Matthews, J., McIlhany, K., Meitanis, N., Milner, R. G., Rapaport, J., Redwine, R. P., Seely, J., Shinozaki, A., Sirca, S., Six, E., Smith, T., Tonguc, B., Tschalaer, C., Tsentalovich, E., Turchinetz, W., Brand, J. F. J. van den, van der Laan, J., Wang, F., Wise, T., Xiao, Y., Xu, W., Zhang, C., Zhou, Z., Ziskin, V., and Zwart, T.
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FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
We report the first precision measurement of the proton electric to magnetic form factor ratio from spin-dependent elastic scattering of longitudinally polarized electrons from a polarized hydrogen internal gas target. The measurement was performed at the MIT-Bates South Hall Ring over a range of four-momentum transfer squared $Q^2$ from 0.15 to 0.65 (GeV/c)$^2$. Significantly improved results on the proton electric and magnetic form factors are obtained in combination with previous cross-section data on elastic electron-proton scattering in the same $Q^2$ region., 4 pages, 2 figures, submitted to PRL
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- 2006
6. Measurements of the generalized electric and magnetic polarizabilities of the proton at low Q(2) using the virtual-compton-scattering reaction
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Bourgeois, P. Sato, Y. Shaw, J. Alarcon, R. Bernstein, A. M. Bertozzi, W. Botto, T. Calarco, J. Casagrande, F. and Distler, M. O. Dow, K. Farkondeh, M. Georgakopoulos, S. and Gilad, S. Hicks, R. Holtrop, M. Hotta, A. Jiang, X. and Karabarbounis, A. Kirkpatrick, J. Kowalski, S. Milner, R. Miskimen, R. Nakagawa, I. Papanicolas, C. N. Sarty, A. J. Sirca, S. Six, E. Sparveris, N. F. Stave, S. and Stiliaris, E. Tamae, T. Tsentalovich, G. Tschalaer, C. and Turchinetz, W. Zhou, Z. -L. Zwart, T.
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High Energy Physics::Phenomenology ,Nuclear Theory ,High Energy Physics::Experiment ,Nuclear Experiment - Abstract
The mean square polarizability radii of the proton have been measured for the first time in a virtual-Compton-scattering experiment performed at the MIT-Bates out-of-plane scattering facility. Response functions and polarizabilities obtained from a dispersion analysis of the data at Q(2)=0.057 GeV2/c(2) are in agreement with O(p(3)) heavy baryon chiral perturbation theory. The data support the dominance of mesonic effects in the polarizabilities.
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- 2006
7. Investigation of the conjectured nucleon deformation at low momentum transfer
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Sparveris, NF Alarcon, R Bernstein, AM Bertozzi, W and Botto, T Bourgeois, P Calarco, J Casagrande, F Distler, MO Dow, K Farkondeh, M Georgakopoulos, S Gilad, S and Hicks, R Holtrop, M Hotta, A Jiang, X Karabarbounis, A and Kirkpatrick, J Kowalski, S Milner, R Miskimen, R and Nakagawa, I Papanicolas, CN Sarty, AJ Sato, Y Sirca, S and Shaw, J Six, E Stave, S Stiliaris, E Tamae, T and Tsentalovich, G Tschalaer, C Turchinetz, W Zhou, ZL and Zwart, T
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High Energy Physics::Experiment ,Nuclear Experiment - Abstract
We report new precise H(e,e(’)p)pi(0) measurements at the Delta(1232) resonance at Q(2)=0.127 (GeV/c)(2) obtained at the MIT-Bates out-of-plane scattering facility which are particularly sensitive to the transverse electric amplitude (E2) of the gamma(*)N–>Delta transition. The new data have been analyzed together with those of earlier measurements to yield precise quadrupole to dipole amplitude ratios: Re(E-1+(3/2)/M-1+(3/2))=(-2.3+/-0.3(stat+syst)+/-0.6(model))% and Re(S-1+(3/2)/M-1+(3/2))=(-6.1+/-0.2(stat+syst)+/-0.5(model))% for M-1+(3/2)=(41.4+/-0.3(stat+syst)+/-0.4(model))(10(-3)/m(pi)(+)). The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q(2), the dominance of mesonic effects.
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- 2005
8. Threshold Electrodisintegration of ^3He
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Hicks, R.S., Hotta, A, Churchwell, S, Jiang, X, Peterson, G.A, Shaw, J, Asavapibhop, B, Berisso, M.C., Bosted, P.E., Burchesky, P.E, Miskimen, R.A, Rock, S.E, Nakagawa, I, Tamae, T, Suda, T, Golak, J, Skibinski, R, Witala, H, Casagrande, F, Turchinetz, W, Cichocki, A, Wang, K, Glockle, W, Kamada, Hiroyuki, Kobayashi, T, and Nogga, A
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FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
Cross sections were measured for the near-threshold electrodisintegration of ^3He at momentum transfer values of q=2.4, 4.4, and 4.7 fm^{-1}. From these and prior measurements the transverse and longitudinal response functions R_T and R_L were deduced. Comparisons are made against previously published and new non-relativistic A=3 calculations using the best available NN potentials. In general, for q, 9 pages, 7 figures, 1 table, REVTEX4, submitted to Physical Review C
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- 2003
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9. Measurement of the transverse-longitudinal cross sections in the p(e,→ ép)π0 reaction in the Δ region
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Kunz, C. Kaloskamis, N.I. Distler, M.O. Zhou, Z.-L. Alarcon, R. Barkhuff, D. Bernstein, A.M. Bertozzi, W. Calarco, J. Casagrande, F. Chen, J. Comfort, J. Dodson, G. Dooley, A. Dow, K. Farkhondeh, M. Georgakopoulos, S. Gilad, S. Hicks, R. Hotta, A. Jiang, X. Karabarbounis, A. Kowalski, S. Margaziotis, D.J. Mertz, C. Miskimen, R. Nakagawa, I. Papanicolas, C.N. Pavan, M.M. Peterson, G. Ramirez, A. Rowntree, D. Sarty, A.J. Shaw, J. Six, E. Sparveris, N. Soong, S.-B. Stiliaris, S. Tamae, T. Tieger, D. Tschalaer, C. Tsentalovich, G. Turchinetz, W. Vellidis, C.E. Warren, G.A. Williamson, S. Young, A. Zhao, J. Zwart, T.
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Nuclear Experiment - Abstract
Accurate measurements of the p(→e, e′p)π0 reaction were performed at Q2 = 0.127 (GeV/c)2 in the A resonance energy region. The experiments at the MIT-Bates Linear Accelerator used an 820 MeV polarized electron beam with the out-of-plane magnetic spectrometer system (OOPS). In this Letter we report the first simultaneous determination of both the TL and TL′ ("fifth" or polarized) cross sections at low Q2 where the pion cloud contribution is predicted to dominate the quadrupole amplitudes (E2 and C2). These are the real and imaginary parts of the transverse-longitudinal interference amplitudes and provide a sensitive determination of the Coulomb quadrupole amplitude and a test of reaction calculations. Comparisons with model calculations are presented. The empirical MAID calculation gives the best overall agreement with this accurate data. The parameters of this model for the values of the resonant multipoles are [M1+(I = 3/2)| = (40.9 ± 0.3) × 10-3/mπ, CMR = C2/M1 = -6.5 ± 0.3%, EMR = E2/M1 = -2.2 ± 0.9%, where the errors are due to the experimental uncertainties. © 2003 Elsevier Science B.V. All rights reserved.
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- 2003
10. Measurement of the [Formula Presented] response function for [Formula Presented] electroproduction at [Formula Presented] in the [Formula Presented] transition
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Sparveris, N.F. Alarcon, R. Barkhuff, D. Bernstein, A. Bertozzi, W. Calarco, J. Casagrande, F. Chen, J. Comfort, J. Distler, M.O. Dodson, G. Dolfini, S. Dooley, A. Dow, K. Farkondeh, M. Gilad, S. Hicks, R. Holtrop, M. Hotta, A. Jiang, X. Kaloskamis, N. Karabarbounis, A. Kowalski, S. Kunz, C. Margaziotis, D. Mertz, C. Milner, R. Miskimen, R. Nakagawa, I. Papanicolas, C.N. Pavan, M.M. Peterson, G. Ramirez, A. Rowntree, D. Sarty, A.J. Shaw, J. Six, E. Soong, S. Stiliaris, E. Tieger, D. Tschalaer, C. Turchinetz, W. Vellidis, C. Warren, G.A. Young, A. Zhao, J. Zhou, Z.-L. Zwart, T.
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Nuclear Experiment - Abstract
Quadrupole amplitudes in the [Formula Presented] transition are associated with the issue of nucleon deformation. A search for these small amplitudes has been the focus of a series of measurements undertaken at Bates/MIT by the OOPS Collaboration. We report on results from [Formula Presented] data obtained at [Formula Presented] and invariant mass of [Formula Presented] using the out-of-plane detection technique with the OOPS spectrometers. The [Formula Presented] and [Formula Presented] response functions were isolated. These results, along with those of previous measurements at [Formula Presented] and [Formula Presented] aim in elucidating the interplay between resonant and nonresonant amplitudes. © 2003 The American Physical Society.
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- 2003
11. Measurement of the R$_{LT}$ response function for $\pi^0$ electroproduction at $Q^2$ = 0.070 (GeV/c)$^2$ in the $N\to\Delta$ transition}
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Sparveris, N., Alarcon, R., Barkhuff, D., Bernstein, A., Bertozzi, W., Calarco, J., Casagrande, F., Chen, J., Comfort, J., Distler, M., Dodson, G., Dooley, A., Dow, K., Farkondeh, M., Gilad, S., Hicks, R., Holtrop, M., Hotta, A., Jiang, X., Kaloskamis, N., Karabarbounis, A., Kowalski, S., Kunz, C., Margaziotis, D., Mertz, C., Milner, R., Miskimen, R., Nakagawa, I., Papanicolas, C., Pavan, M., Peterson, G., Ramirez, A., Rowntree, D., Sarty, A., Shaw, J., Six, E., Soong, S., Stiliaris, S., Tieger, D., Tschalaer, C., Turchinetz, W., Vellidis, C., Warren, G., Young, A., Zhao, J., Zhou, Z., and Zwart, T.
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Nuclear Experiment - Abstract
Quadrupole amplitudes in the $\gamma^{*}N\to\Delta$ transition are associated with the issue of nucleon deformation. A search for these small amplitudes has been the focus of a series of measurements undertaken at Bates/MIT by the OOPS collaboration. We report on results from H$(e,e^\prime p)\pi^0$ data obtained at $Q^2= 0.070$ (GeV/c)$^2$ and invariant mass of W=1155 MeV using the out-of-plane detection technique with the OOPS spectrometers. The $\sigma_{LT}$ and $\sigma_{T}+\epsilon\cdot$ $\sigma_{L}$ response functions were isolated. These results, along with those of previous measurements at $W$=1172 MeV and $Q^2= 0.127$ (GeV/c)$^2$, aim in elucidating the interplay between resonant and non resonant amplitudes.
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- 2002
12. Measurement of the R$_{LT}$ response function for $��^0$ electroproduction at $Q^2$ = 0.070 (GeV/c)$^2$ in the $N\to��$ transition}
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Sparveris, N., Alarcon, R., Barkhuff, D., Bernstein, A., Bertozzi, W., Calarco, J., Casagrande, F., Chen, J., Comfort, J., Distler, M., Dodson, G., Dooley, A., Dow, K., Farkondeh, M., Gilad, S., Hicks, R., Holtrop, M., Hotta, A., Jiang, X., Kaloskamis, N., Karabarbounis, A., Kowalski, S., Kunz, C., Margaziotis, D., Mertz, C., Milner, R., Miskimen, R., Nakagawa, I., Papanicolas, C., Pavan, M., Peterson, G., Ramirez, A., Rowntree, D., Sarty, A., Shaw, J., Six, E., Soong, S., Stiliaris, S., Tieger, D., Tschalaer, C., Turchinetz, W., Vellidis, C., Warren, G., Young, A., Zhao, J., Zhou, Z., and Zwart, T.
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FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
Quadrupole amplitudes in the $��^{*}N\to��$ transition are associated with the issue of nucleon deformation. A search for these small amplitudes has been the focus of a series of measurements undertaken at Bates/MIT by the OOPS collaboration. We report on results from H$(e,e^\prime p)��^0$ data obtained at $Q^2= 0.070$ (GeV/c)$^2$ and invariant mass of W=1155 MeV using the out-of-plane detection technique with the OOPS spectrometers. The $��_{LT}$ and $��_{T}+��\cdot$ $��_{L}$ response functions were isolated. These results, along with those of previous measurements at $W$=1172 MeV and $Q^2= 0.127$ (GeV/c)$^2$, aim in elucidating the interplay between resonant and non resonant amplitudes.
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- 2002
- Full Text
- View/download PDF
13. Performance of a compact detector package for the out-of-plane spectrometer system
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Zhou, Z.-L. Širca, S. Boeglin, W. Sarty, A.J. Alarcon, R. Beck, R. Bernstein, A. Bertozzi, W. Botto, T. Bourgeois, P. Calarco, J. Casagrande, F. Chen, J. Comfort, J.R. Dale, D. Distler, M.O. Dodson, G. Dolfini, S. Dooley, A. Dow, K. Epstein, M. Farkhondeh, M. Georgakopoulos, S. Gilad, S. Hicks, R. Holtrop, M. Hotta, A. Jiang, X. Joo, K. Jordan, D. Kaloskamis, N. Karabarbounis, A. Kirkpatrick, J. Kowalski, S. Kunz, C. Liyanage, N. Mandeville, J. Margaziotis, D.J. McIlvain, T. Mertz, C. Milner, R. Miskimen, R. Nakagawa, I. Papanicolas, C.N. Pavan, M. Peterson, G. Ramirez, A. Rowntree, D. Sato, Y. Shaw, J. Six, E. Sobczynski, S. Soong, S.-B. Sparveris, N. Stave, S. Stiliaris, S. Tamae, T. Tieger, D. Tschalar, C. Tsentalovich, G. Turchinetz, W. Vellidis, C. Warren, G.A. Weinstein, L.B. Williamson, S.E. Young, A. Zhao, J. Zwart, T.
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Nuclear Experiment - Abstract
We report on the design and performance of compact detector packages currently installed in the four magnetic out-of-plane spectrometers for electron scattering experiments at the MIT-Bates Linear Accelerator Center. The detector packages have been designed to meet the mechanical requirements arising from out-of-plane particle detection. They offer good trajectory and momentum reconstruction, particle identification and time-of-flight measurements for electrons, pions, protons, and deuterons with large momentum bites and in broad kinematical ranges and high luminosities. The detectors have so far been used with great success in out-of-plane measurements of 12C(e→,e′p), 2H(e→,e′p), virtual Compton scattering below pion threshold and in studies of the N→Δ transition in both exclusive reaction channels 1H(e→,e′p)π0 and 1H(e→,e′π+)n. © 2002 Elsevier Science B.V. All rights reserved.
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- 2002
14. Search for quadrupole strength in the electroexcitation of the Δ+ (1232)
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Mertz, C. Vellidis, C.E. Alarcon, R. Barkhuff, D.H. Bernstein, A.M. Bertozzi, W. Burkert, V. Chen, J. Comfort, J.R. Dodson, G. Dow, K. Farkhondeh, M. Finn, J.M. Gilad, S. Gothe, R.W. Jiang, X. Joo, K. Kaloskamis, N.I. Karabarbounis, A. Kelly, J.J. Kowalski, S. Kunz, C. Lourie, R.W. McIntyre, J.I. Milbrath, B.D. Miskimen, R. Mitchell, J.H. Papanicolas, C.N. Perdrisat, C.F. Sarty, A.J. Shaw, J. Soong, S.-B. Tieger, D. Tschalær, C. Turchinetz, W. Ulmer, P.E. Van Verst, S. Warren, G.A. Weinstein, L.B. Williamson, S. Woo, R.J. Young, A.
- Abstract
High-precision 1H(e, elp)φ0 measurements at Q2 = 0.126 (GeV/c)2 are presented. It allows the determination of quadrupole amplitudes in the γ*N → △ transition, in which the reliability of electroproduction models was simultaneously tested. The derived quadrupole-to-dipole (I = 3/2) amplitude ratios, RSM = (-6.5 ± 0.2stat+sys ± 2.5mod)% and REM = (-2.1 ± 0.2stat+sys ± 2.0mod)%, are dominated by model error.
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- 2001
15. Relativistic effects and two-body currents in 2H(e→, e′p)n using out-of-plane detection
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Zhou, Z.-L. Chen, J. Soong, S.-B. Young, A. Jiang, X. Alarcon, R. Arenhövel, H. Bernstein, A. Bertozzi, W. Comfort, J. Dodson, G. Dolfini, S. Dooley, A. Dow, K. Farkhondeh, M. Gilad, S. Hicks, R. Hotta, A. Joo, K. Kaloskamis, N.I. Karabarbounis, A. Kowalski, S. Kunz, C. Margaziotis, D.J. Mertz, C. Miller, M. Miskimen, R. Miura, T. Miyase, H. Papanicolas, C.N. Peterson, G. Ramirez, A. Rowntree, D. Sarty, A.J. Shaw, J. Suda, T. Tamae, T. Tieger, D. Tjon, J.A. Tschalaer, C. Tsentalovich, E. Turchinetz, W. Vellidis, C.E. Warren, G.A. Weinstein, L.B. Williamson, S. Zhao, J. Zwart, T. The MIT-Bates OOPS Collaboration
- Abstract
Measurements of the 2H(e→, e′p)n reaction were performed with the out-of-plane magnetic spectrometers (OOPS) at the MIT-Bates Linear Accelerator. The longitudinal-transverse, fLT and f′LT, and the transverse-transverse, fTT, interference responses at a missing momentum of 210MeV/c were simultaneously extracted in the dip region at Q2 = 0.15(GeV/c)2. In comparison to models of deuteron electrodisintegration, the data clearly reveal strong effects of relativity and final-state interactions and the importance of two-body meson-exchange currents and isobar configurations. We demonstrate that such effects can be disentangled by extracting these responses using the novel out-of-plane technique. © 2001 The American Physical Society.
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- 2001
16. Measurement of tensor polarization in elastic electron-deuteron scattering
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Hafidi, K., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E.J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N.S., Danagulian, S., Dow, K., Ducret, J.E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., McIntyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mkrtchian, H., Pitz, D., Qin, L., Ransome, R., Real, J.S., Roos, P.G., Rutt, P., Schmidt, W., Sawafta, R., Stepanian, S., Stephenson, E.J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Voutier, E., Vulcan, W., Williamson, C., Wood, S.A., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and JLAB t20
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scholar ,university ,researcher ,professor ,cultural studies ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,France ,communication studies - Abstract
1975 is the start in France for "Communication Studies". How many people in 2001 this new discipline represents? More than 1000 permanent professors (including lecturers and adjoints), increasing each year by more than 10% since its creation. What kind of theme they work on? "General Theories" for 15%, "New Medias" for 14%, "Communicational skill" for 11%, "Organizational Communication" for 10%, "Bibliology" for 9%, etc. An incredible vivid field.
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- 1999
17. Search for Quadrupole Strength in the Electro-excitation of the Delta(1232)
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Mertz, C., Vellidis, C., Alarcon, R., Barkhuff, D. H., Bernstein, A. M., Bertozzi, W., Burkert, V., Chen, J., Comfort, J. R., Dodson, G., Dolfini, S., Dow, K., Farkhondeh, M., Finn, J. M., Gilad, S., Gothe, R. W., Jiang, X., Joo, K., Kaloskamis, N. I., Karabarbounis, A., Kelly, J. J., Kowalski, S., Kunz, C., Lourie, R. W., McIntyre, J. I., Milbrath, B. D., Miskimen, R., Mitchell, J. H., Papanicolas, C. N., Perdrisat, C. F., Sarty, A. J., Shaw, J., Soong, S. -B., Tieger, D., Tschalaer, C., Turchinetz, W., Ulmer, P. E., Van Verst, S., Warren, G. A., Weinstein, L. B., Williamson, S., Woo, R. J., and Young, A.
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Astrophysics::High Energy Astrophysical Phenomena ,FOS: Physical sciences ,High Energy Physics::Experiment ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
High-precision H(e,e'p)pi0 measurements at Q2=0.126 (GeV/c)2 are reported, which allow the determination of quadrupole amplitudes in the gamma* N->Delta transition; they simultaneously test the reliability of electroproduction models. The derived quadrupole-to-dipole amplitude ratios, Rsm=(-6.5 +- 0.2{stat+sys} +- 2.5{mod}) % and Rem=(-2.1 +- 0.2{stat+sys} +- 2.0{mod}) %, are dominated by model error. Previous Rsm and Rem results should be reconsidered after the model uncertainties associated with the method of their extraction are taken into account., 5 pages LATEX, 2 figures; resubmitted to Phys. Rev. Lett
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- 1999
18. Deuteron electromagnetic form factors
- Author
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Beise, E. J., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mkrtchian, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanian, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., bibliotheque, LPSC, 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and JLAB t20
- Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] - Published
- 1999
19. Measurement of recoil proton polarizations in the electrodisintegration of deuterium by polarized electrons
- Author
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Barkhuff, DH Armstrong, CS Bertozzi, W Chen, JP Dale, D and Dodson, G Dow, KA Epstein, MB Farkhondeh, M Finn, JM and Gilad, S Jones, MK Joo, K Kelly, JJ Kowalski, S and Liu, D Lourie, RW McIntyre, JI Madey, R Margaziotis, DJ and Markowitz, P Mertz, C Milbrath, BD Mitchell, J and Mukhopadhyay, S Perdrisat, CF Punjabi, V Qin, L Rutt, PM and Sarty, AJ Tieger, D Tschalaer, C Turchinetz, W and Ulmer, PE Van Verst, SP Vellidis, C Warren, G Weinstein, LB Woo, RJ
- Subjects
Nuclear Theory ,Nuclear Experiment - Abstract
In order to test modem theories of two-nucleon bound and scattering states, we have measured the spin polarization of ejectile protons in the electrodisintegration reaction d((e) over right arrow, e’(p) over right arrow)n. Compared with spin-averaged observations, these observables offer the potential of enhanced sensitivity to details of the reaction process. The experiment was carried out in quasielastic kinematics (q(mu)q(mu)= -2m(p) omega= -0.38GeV(2)/c(2)). Protons were detected at two angles corresponding to neutron recoil momenta p(r) of 0 and 100MeV/c. Full nonrelativistic calculations of the polarization transfer components s(l) and s(t), including leading order relativistic contributions, describe our measurements well, but calculations of the induced polarization s(n) at p(r) = 100 MeV/c underpredict the experimental result. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
- Published
- 1999
20. Precise measurement of the deuteron elastic structure function A(Q$^{2}$)
- Author
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Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., E Ducret, J., Dunne, J., Ent, R., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mohring, R., Mtingwa, S., Mrktchyan, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Sawafta, R., Stepanyan, S., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and JLAB t20
- Subjects
Nuclear Theory ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
The A(Q^2) structure function in elastic electron-deuteron scattering was measured at six momentum transfers Q^2 between 0.66 and 1.80 (GeV/c)^2 in Hall C at Jefferson Laboratory. The scattered electrons and recoil deuterons were detected in coincidence, at a fixed deuteron angle of 60.5 degrees. These new precise measurements resolve discrepancies between older sets of data. They put significant constraints on existing models of the deuteron electromagnetic structure, and on the strength of isoscalar meson exchange currents., Comment: 3 LaTeX pages plus 2 PS figures
- Published
- 1999
21. Out-of-plane measurements of the fifth response function of the exclusive electronuclear response
- Author
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Dolfini, SM Alarcon, RO Arenhovel, H Beck, R Bernstein, AM Bertozzi, W Boeglin, W Boffi, S Comfort, JR Dale, D Dodson, G Dow, K Epstein, MB Farkhondeh, M Gilad, S Gorgen, J Holtrop, M Jordan, D Kim, W Kowalski, S and Laszewski, R Mandeville, J Margaziotis, DJ Martinez, D and McIlvain, T Miskimen, R Papanicolas, C Radici, M and Tieger, D Turchinetz, W Vellidis, CE Weinstein, L and Williamson, S
- Abstract
The first measurements of f(LT)’ known as the fifth response function, have been made for the H-2((e) over right arrow, e’p) and C-12((3) over right arrow, e’p) reactions. This response is directly related to the imaginary part of the interference between the transverse and longitudinal nuclear electromagnetic currents. Its observation requires longitudinally polarized electron beams and out-of-plane detection, the latter made possible by the newly developed out-of-plane spectrometer system. The initial measurements were made by using a 560-MeV polarized electron beam and quasielastic kinematics at Q(2) = 3.3 fm(-2). The development of the methodology for out-of-plane physics, and the analysis of the data from the initial experiments are described in detail. The measured fifth response and the related asymmetry in the coincidence cross section are in agreement, albeit with large statistical errors, with the theoretical predictions. Future extensions of the out-of-plane program are also discussed. [S0556-2813(99)02812-5].
- Published
- 1999
22. The A(Q$^2$) deuteron structure function from the Jefferson Lab t$_20$ experiment
- Author
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Pitz, D., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchyan, H., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanyan, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Menze D.W., JLAB t20, and bibliotheque, LPSC
- Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] - Published
- 1998
23. Tensor polarization and cross-section measurement in elastic electron-deuteron scattering between 4.1 and 6.8 fm$^{-1}$ of momentum transfer
- Author
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Ducret, J. E., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchyan, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanyan, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Adam J., and JLAB t20
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[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] - Published
- 1998
24. Deuteron elastic form factors : opportunity for Blast ?
- Author
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Turchinetz, W., Ahmidouch, A., Dow, K., Williamson, C., Zhao, W., Eyraud, L., Furget, C., Kox, S., Lu, L., Merchez, F., Real, J. S., Tieulent, R., Eric Voutier, Ball, J., Ducret, J. E., Garcon, M., Hafidi, K., Pitz, D., Beise, E. J., Breuer, H., Chant, N. S., Ewell, L., Gustafsson, K., Lung, A., Mohring, R., Roos, P. G., Abbott, D., Carlini, R., Dunne, J., Gueye, P., Mack, D., Meekins, D., Mitchell, J., Qin, L., Vansyoc, K., Volmer, J., Vulcan, W., Wood, S. A., Yan, C., Gilman, R., Glashausser, C., Kumbartzki, G., Mcintyre, J., Ransome, R., Rutt, P., Honneger, A., Jourdan, J., Zhao, J., Arvieux, J., Tomasi-Gustafsson, E., Beedoe, S., Danagoulian, S., Mtingwa, S., Sawafta, R., Anklin, H., Boeglin, W., Markowitz, P., Bimbot, L., Mrktchyan, H., Stepanyan, S., Schmidt, W., Stephenson, E. J., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), 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), Alarcon R., and JLAB t20
- Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] - Published
- 1998
25. Induced proton polarization for pi(0) electroproduction at Q(2)=0.126 GeV2/c(2) around the Delta(1232) resonance
- Author
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Warren, GA Alarcon, R Armstrong, C Asavapibhop, B and Barkhuff, DH Bertozzi, W Burkert, V Chen, J Chen, JP and Comfort, JR Dale, D Dodson, G Dolfini, S Dow, K and Epstein, M Farkhondeh, M Finn, JM Gilad, S Gothe, RW and Jiang, X Jones, M Joo, K Karabarbounis, A Kelly, J and Kowalski, S Kunz, C Liu, D Lourie, RW Madey, R and Margaziotis, D Markowitz, P McIntyre, JI Mertz, C and Milbrath, BD Miskimen, R Mitchell, J Mukhopadhyay, S and Papanicolas, CN Perdrisat, C Punjabi, V Qin, L Rutt, P and Sarty, A Shaw, J Soong, SB Tieger, D Tschalaer, C and Turchinetz, W Ulmer, P Van Verst, S Vellidis, C and Weinstein, LB Williamson, S Woo, RJ Young, A
- Abstract
We present a measurement of the induced proton polarization P-n in pi(0) electroproduction on the proton around the Delta resonance. The measurement was made at a central invariant mass and a squared four-momentum transfer of W=1231 MeV and Q(2)=0.126 GeV2/c(2), respectively. We measured a large induced polarization, P-n = -0.397 +/- 0.055 +/- 0.009. The data suggest that the scalar background is larger than expected from a recent effective Hamiltonian model. [S0556-2813(98)02012-3].
- Published
- 1998
26. Measurement of the induced proton polarization P-n in the C-12(e,e '(p)over-right-arrow) reaction
- Author
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Woo, RJ Barkhuff, DH Bertozzi, W Chen, JP Dale, D and Dodson, G Dow, KA Epstein, MB Farkhondeh, M Finn, JM and Gilad, S Jones, MK Joo, K Kelly, JJ Kowalski, S and Lourie, RW Madey, R Margaziotis, DJ Markowitz, P and McIntyre, JI Mertz, C Milbrath, BD Mitchell, J and Perdrisat, CF Punjabi, V Rutt, PM Sarty, AJ Tieger, D and Tschalaer, C Turchinetz, W Ulmer, PE Van Verst, SP and Vellidis, C Warren, GA Weinstein, L
- Subjects
Nuclear Theory ,Nuclear Experiment - Abstract
The first measurements of the induced proton polarization P-n for the C-12(e,e’(p) over right arrow) reaction are reported. The experiment was performed at quasifree kinematics for energy and momentum transfer (w, q) approximate to (294 MeV, 756 MeV/c) and sampled a missing momentum range of 0-250 MeV/c. The induced polarization arises from final-state interactions and for these kinematics is dominated by the real part of the spin-orbit optical potential. The distorted-wave impulse approximation provides good agreement with data fur the 1p(3/2) shelf. The data for the continuum suggest that both the 1s(1/2) shell and underlying l > 1 configurations contribute.
- Published
- 1998
27. A Measurement of the Interference Structure Function, R_LT, for the 12C(e,e'p) reaction in the Quasielastic Region
- Author
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Holtrop, M., Jordan, D., McIlvain, T., Alarcon, R., Beck, R., Bertozzi, W., Bhushan, V., Boeglin, W., Chen, J. P., Dale, D., Dodson, G., Dolfini, S., Dow, K., Dzengeleski, J., Epstein, M. B., Farkhondeh, M., Gilad, S., Gorgen, J., Joo, K., Kelsey, J., Kim, W., Laszewski, R., Lourie, R., Mandeville, J., Margaziotis, D., Martinez, D., Miskimen, R., Papanicolas, C., Penn, S., Sapp, W., Sarty, A. J., Tieger, D., Tschalaer, C., Turchinetz, W., Warren, G., Weinstein, L., and Williamson, S.
- Subjects
Nuclear Theory ,FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
The coincidence cross-section and the interference structure function, R_LT, were measured for the 12C(e,e'p) 11B reaction at quasielastic kinematics and central momentum transfer of q=400 MeV/c. The measurement was at an opening angle of theta_pq=11 degrees, covering a range in missing energy of E_m = 0 to 65 MeV. The R_LT structure function is found to be consistent with zero for E_m > 50 MeV, confirming an earlier study which indicated that R_L vanishes in this region. The integrated strengths of the p- and s-shell are compared with a Distorted Wave Impulse Approximation calculation. The s-shell strength and shape are compared with a Hartree Fock-Random Phase Approximation calculation. The DWIA calculation overestimates the cross sections for p- and s-shell proton knockout as expected, but surprisingly agrees with the extracted R_LT value for both shells. The HF-RPA calculation describes the data more consistently, which may be due to the inclusion of 2-body currents in this calculation., 8 Pages LaTex, 5 postscript figures. Submitted to Phys. Rev. C
- Published
- 1997
28. A Comparison of Polarization Observables in Electron Scattering from the Proton and Deuteron
- Author
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Milbrath, B. D., McIntyre, J. I., Armstrong, C. S., Barkhuff, D. H., Bertozzi, W., Dale, D., Dodson, G., Dow, K. A., Epstein, M. B., Farkhondeh, M., Finn, J. M., Gilad, S., Jones, M. K., Joo, K., Kelly, J. J., Kowalski, S., Lourie, R. W., Madey, R., Margaziotis, D. J., Markowitz, P., Mertz, C., Mitchell, J., Perdrisat, C. F., Punjabi, V., Qin, L., Rutt, P. M., Sarty, A. J., Tieger, D., Tschalaer, C., Turchinetz, W., Ulmer, P. E., Van Verst, S. P., Warren, G. A., Weinstein, L. B., and Woo, R. J.
- Subjects
Nuclear Theory ,FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
Recoil proton polarization observables were measured for both the p($\vec {\rm e}$,e$^\prime\vec{\rm p}\,$) and d($\vec {\rm e}$,e$^\prime\vec{\rm p}\,)$n reactions at two values of Q$^2$ using a newly commissioned proton Focal Plane Polarimeter at the M.I.T.-Bates Linear Accelerator Center. The hydrogen and deuterium spin-dependent observables $D_{\ell\ell}$ and $D_{{\ell}t}$, the induced polarization $P_n$ and the form factor ratio $G^p_E/G^p_M$ were measured under identical kinematics. The deuterium and hydrogen results are in good agreement with each other and with the plane-wave impulse approximation (PWIA)., Comment: 9 pages, 1 figure; accepted by Phys. Rev. Lett
- Published
- 1997
- Full Text
- View/download PDF
29. Measurement of the Induced Proton Polarization P_n in the 12C(e,e'\vec{p}) Reaction
- Author
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Woo, R. J., Barkhuff, D. H., Bertozzi, W., Dale, D., Dodson, G., Dow, K. A., Epstein, M. B., Farkhondeh, M., Finn, J. M., Gilad, S., Jones, M. K., Joo, K., Kelly, J. J., Kowalski, S., Lourie, R. W., Madey, R., Margaziotis, D. J., Markowitz, P., McIntyre, J. I., Mertz, C., Milbrath, B. D., Mitchell, J., Perdrisat, C. F., Punjabi, V., Rutt, P. M., Sarty, A. J., Tieger, D., Tschalaer, C., Turchinetz, W., Ulmer, P. E., Vellidis, C., Van Verst, S. P., Warren, G. A., and Weinstein, L.
- Subjects
Nuclear Theory ,FOS: Physical sciences ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment - Abstract
The first measurements of the induced proton polarization, P_n, for the 12C (e,e'\vec{p}) reaction are reported. The experiment was performed at quasifree kinematics for energy and momentum transfer (\omega,q) \approx (294 MeV, 756 MeV/c) and sampled a recoil momentum range of 0-250 MeV/c. The induced polarization arises from final-state interactions and for these kinematics is dominated by the real part of the spin-orbit optical potential. The distorted-wave impulse approximation provides good agreement with data for the 1p_{3/2} shell. The data for the continuum suggest that both the 1s_{1/2} shell and underlying l > 1 configurations contribute., Comment: 5 pages LaTeX, 2 postscript figures, accepted by Physical Reveiw Letters
- Published
- 1997
- Full Text
- View/download PDF
30. Final calibration of POLDER for the measurement of t$_{20}$ in e-d scattering at Jefferson Lab
- Author
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Arvieux, J., Ball, J., Beise, E. J., Bimbot, L., Breuer, H., Collins, G., Ducret, J. E., Eyraud, L., Furget, C., Garcon, M., Ronald Gilman, Glashausser, C., Goy, J., Hafidi, K., Kox, S., Ladygin, V., Markowitz, P., Merchez, F., Pitz, D., Real, J. S., Rutt, P., Stephenson, E., Tomasi-Gustafsson, E., Turchinetz, W., Voutier, E., Williamson, C., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), De Jager C.W., Ketel T.J., and Mulders P.J.
- Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] - Published
- 1996
31. First measurement of the fifth structure function
- Author
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Mandeville, J. B., Cardman, L. S., Dolfini, S. M., Kim, W., Laszewski, R. M., Papanicolas, C. N., Williamson, S. E., Alarcon, R., Comfort, Joseph R., Gorgen, J., Martinez, D., Beck, R., Boeglin, W., Bernstein, A., Bertozzi, W., Dale, D., Dodson, G., Dow, K., Gilad, S., Holtrop, M., Jordan, D., Kowalski, S., Mcilvain, T., Tieger, D., Turchinetz, W., Boffi, S., Marco Radici, Epstein, M., Margaziotis, D., Miskimen, R., and Weinstein, L.
- Subjects
Nuclear Physics - Published
- 1994
32. Measurement of the transverse–longitudinal cross sections in the p(e→,e′p)π0 reaction in the Δ region
- Author
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Kunz, C., Kaloskamis, N.I., Distler, M.O., Zhou, Z.-L., Alarcon, R., Barkhuff, D., Bernstein, A.M., Bertozzi, W., Calarco, J., Casagrande, F., Chen, J., Comfort, J., Dodson, G., Dooley, A., Dow, K., Farkhondeh, M., Georgakopoulos, S., Gilad, S., Hicks, R., Hotta, A., Jiang, X., Karabarbounis, A., Kowalski, S., Margaziotis, D.J., Mertz, C., Miskimen, R., Nakagawa, I., Papanicolas, C.N., Pavan, M.M., Peterson, G., Ramirez, A., Rowntree, D., Sarty, A.J., Shaw, J., Six, E., Sparveris, N., Soong, S.-B., Stiliaris, S., Tamae, T., Tieger, D., Tschalaer, C., Tsentalovich, G., Turchinetz, W., Vellidis, C.E., Warren, G.A., Williamson, S., Young, A., Zhao, J., and Zwart, T.
- Subjects
Out-of-plane ,Nuclear and High Energy Physics ,EMR ,Electro-pion production ,CMR ,Nuclear Experiment - Abstract
Accurate measurements of the p(e→,e′p)π0 reaction were performed at Q2=0.127 (GeV/c)2 in the Δ resonance energy region. The experiments at the MIT-Bates Linear Accelerator used an 820 MeV polarized electron beam with the out-of-plane magnetic spectrometer system (OOPS). In this Letter we report the first simultaneous determination of both the TL and TL′ (“fifth” or polarized) cross sections at low Q2 where the pion cloud contribution is predicted to dominate the quadrupole amplitudes (E2 and C2). These are the real and imaginary parts of the transverse–longitudinal interference amplitudes and provide a sensitive determination of the Coulomb quadrupole amplitude and a test of reaction calculations. Comparisons with model calculations are presented. The empirical MAID calculation gives the best overall agreement with this accurate data. The parameters of this model for the values of the resonant multipoles are |M1+(I=3/2)|=(40.9±0.3)×10−3/mπ, CMR=C2/M1=−6.5±0.3%, EMR=E2/M1=−2.2±0.9%, where the errors are due to the experimental uncertainties.
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33. INDICATION FOR A K-PI=O- OCTUPOLE BAND IN ND-150 FROM ELECTRON-SCATTERING
- Author
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CRESWELL, C, BERTOZZI, W, HEISENBERG, J, KOWALSKI, S, SARGENT, CP, TURCHINETZ, W, DIEPERINK, A, and KVI - Center for Advanced Radiation Technology
- Published
- 1978
34. Tensor polarization in elastic electron-deuteron scattering between 0.65 and 1.8 (GeV/c)$^2$
- Author
-
Wood, S. A., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchyan, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanyan, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Menze D.W., and JLAB t20
- Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
35. Tensor polarization in elastic electron-deuteron scattering to the highest possible momentum transfers
- Author
-
Garcon, M., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchyan, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanyan, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), JLAB t20, and Frois B. Goutte D. Guillemaud-Mueller D.
- Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
36. Threshold electrodisintegration of 3He
- Author
-
Hicks, R. S., Hotta, A., Churchwell, S., Jiang, X., Peterson, G. A., Shaw, J., Asavapibhop, B., Berisso, M. C., Bosted, P. E., Burchesky, K., Miskimen, R. A., Rock, S. E., Nakagawa, I., Tamae, T., Suda, T., Golak, J., Skibiński, R., Witała, H., Casagrande, F., Turchinetz, W., Cichocki, A., Wang, K., Glöckle, W., Hiroyuki Kamada, Kobayashi, T., and Nogga, A.
37. First observation of coherent pi0 electroproduction on deuterons at large momentum transfer
- Author
-
Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Ducret, J. E., Dunne, J., Ent, R., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Ronald Gilman, Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mohring, R., Mtingwa, S., Mrktchian, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Sawafta, R., Stepanian, S., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Voutier, E., Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., and Rekalo, M. P.
38. Tensor polarization measurement in elastic electron-deuteron scattering at large momentum transfer
- Author
-
Furget, C., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Garçon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honneger, A., Jourdan, J., Kox, S., Kumbarski, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchyan, H., Pitz, D., Qin, L., Ronald Ransome, Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanyan, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Voutier, E., Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., and Zhao, W.
39. First observation of coherent threshold $\pi^{0}$ electroproduction on the deuteron at large k^{2}
- Author
-
Tomasi-Gustafsson, E., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagoulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchyan, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Sawafta, R., Stepanyan, S., Tieulent, R., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., Rekalo, M. P., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
40. CEBAF T$_{20}$ experiment : polarization effects in e,d elastic scattering
- Author
-
Bimbot, L., Abbott, D., Ahmidouch, A., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Furget, C., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mrktchian, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanian, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., 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), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Bruncko D. Strizenec P., JLAB t20, and bibliotheque, LPSC
- Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
41. Tensor polarization measurement in elastic electron deuteron scattering at large momentum transfer
- Author
-
Furget, C., Abbott, D., Ahmidouch, A., Anklin, H., Arvieux, J., Ball, J., Beedoe, S., Beise, E. J., Bimbot, L., Boeglin, W., Breuer, H., Carlini, R., Chant, N. S., Danagulian, S., Dow, K., Ducret, J. E., Dunne, J., Ewell, L., Eyraud, L., Garcon, M., Gilman, R., Glashausser, C., Gueye, P., Gustafsson, K., Hafidi, K., Honegger, A., Jourdan, J., Kox, S., Kumbartzki, G., Lu, L., Lung, A., Mack, D., Markowitz, P., Mcintyre, J., Meekins, D., Merchez, F., Mitchell, J., Mtingwa, S., Mkrtchian, H., Pitz, D., Qin, L., Ransome, R., Real, J. S., Roos, P. G., Rutt, P., Schmidt, W., Sawafta, R., Stepanian, S., Stephenson, E. J., Tieulent, R., Tomasi-Gustafsson, E., Turchinetz, W., Vansyoc, K., Volmer, J., Eric Voutier, Vulcan, W., Williamson, C., Wood, S. A., Yan, C., Zhao, J., Zhao, W., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), 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 bibliotheque, LPSC
- Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
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