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4 results on '"Meitanis, Nikolas"'

1. Measurement of the Vector and Tensor Asymmetries at Large Missing Momentum in Quasielastic ([→ over e],e′p) Electron Scattering from Deuterium

Author

Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, DeGrush, Adam Jon, Maschinot, Aaron Joseph, Akdogan, Taylan, Bertozzi, William, Botto, Tancredi, Clasie, Benjamin, Dow, Karen Ann, Farkhondeh, Manouchehr, Franklin, Wilbur A, Gilad, Shalev, Hasell, Douglas K, Kolster, Hauke, Matthews, June L, Meitanis, Nikolas C, Milner, Richard G, Redwine, Robert P, Seely, J., Shinozaki, Akihisa, Tschalaer, Christoph, Tsentalovich, Evgeni P, Xiao, Y., Zhou, Z.-L., Ziskin, Vitaliy, Zwart, Gert-Jan, Alarcon, R., Booth, E., Calarco, J. R., Crawford, C., Fatemi, R., Filoti, O., Gao, H., Geis, E., Karpius, P., Kohl, M., Lee, T., McIlhany, K., Rapaport, J., Sindile, A., Širca, S., Six, E., Smith, T., Tonguc, B., Turchinetz, W., Xu, W., Clasie, Benjamin Michael Patrick, Hasell, Douglas K., Matthews, June L., Tschalar, Christoph, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, DeGrush, Adam Jon, Maschinot, Aaron Joseph, Akdogan, Taylan, Bertozzi, William, Botto, Tancredi, Clasie, Benjamin, Dow, Karen Ann, Farkhondeh, Manouchehr, Franklin, Wilbur A, Gilad, Shalev, Hasell, Douglas K, Kolster, Hauke, Matthews, June L, Meitanis, Nikolas C, Milner, Richard G, Redwine, Robert P, Seely, J., Shinozaki, Akihisa, Tschalaer, Christoph, Tsentalovich, Evgeni P, Xiao, Y., Zhou, Z.-L., Ziskin, Vitaliy, Zwart, Gert-Jan, Alarcon, R., Booth, E., Calarco, J. R., Crawford, C., Fatemi, R., Filoti, O., Gao, H., Geis, E., Karpius, P., Kohl, M., Lee, T., McIlhany, K., Rapaport, J., Sindile, A., Širca, S., Six, E., Smith, T., Tonguc, B., Turchinetz, W., Xu, W., Clasie, Benjamin Michael Patrick, Hasell, Douglas K., Matthews, June L., and Tschalar, Christoph

Abstract

We report the measurement of the beam-vector and tensor asymmetries A[subscript ed][superscript V] and A[subscript d][superscript T] in quasielastic ([→ over e],e′p) electrodisintegration of the deuteron at the MIT-Bates Linear Accelerator Center up to missing momentum of 500 MeV/c. Data were collected simultaneously over a momentum transfer range 0.1

Published
2018

2. Precise Measurement of Deuteron Tensor Analyzing Powers with BLAST

Author

Bates Linear Accelerator Center, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Bertozzi, William, Zhang, C., Akdogan, Taylan, Botto, Tancredi, Clasie, Benjamin Michael Patrick, DeGrush, Adam J., Dow, Karen A., Farkhondeh, Manouchehr, Franklin, Wilbur, Gilad, Shalev, Hasell, Douglas K., Kolster, Hauke, Maschinot, Aaron Joseph, Matthews, J., Meitanis, Nikolas, Milner, Richard G., Redwine, Robert P., Seely, J., Shinozaki, A., Tschalar, C., Tsentalovich, Evgeni P., Turchinetz, William E., Xiao, Y., Zhou, Z. -L., Ziskin, Vitaliy, Zwart, T., Kohl, Michael, Alarcon, R., Booth, E., Calarco, John R., Crawford, C., Fatemi, Renee, Filoti, O., Gao, H., Geis, E., Karpius, P., Lee, T., McIlhany, K., Rapaport, J., Sindile, A., Sirca, S., Six, E., Smith, T., Tonguc, B., Xu, W., Bates Linear Accelerator Center, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Bertozzi, William, Zhang, C., Akdogan, Taylan, Botto, Tancredi, Clasie, Benjamin Michael Patrick, DeGrush, Adam J., Dow, Karen A., Farkhondeh, Manouchehr, Franklin, Wilbur, Gilad, Shalev, Hasell, Douglas K., Kolster, Hauke, Maschinot, Aaron Joseph, Matthews, J., Meitanis, Nikolas, Milner, Richard G., Redwine, Robert P., Seely, J., Shinozaki, A., Tschalar, C., Tsentalovich, Evgeni P., Turchinetz, William E., Xiao, Y., Zhou, Z. -L., Ziskin, Vitaliy, Zwart, T., Kohl, Michael, Alarcon, R., Booth, E., Calarco, John R., Crawford, C., Fatemi, Renee, Filoti, O., Gao, H., Geis, E., Karpius, P., Lee, T., McIlhany, K., Rapaport, J., Sindile, A., Sirca, S., Six, E., Smith, T., Tonguc, B., and Xu, W.

Abstract

We report a precision measurement of the deuteron tensor analyzing powers T[subscript 20] and T[subscript 21] at the MIT-Bates Linear Accelerator Center. Data were collected simultaneously over a momentum transfer range Q=2.15–4.50 fm[superscript -1] with the Bates Large Acceptance Spectrometer Toroid using a highly polarized deuterium internal gas target. The data are in excellent agreement with calculations in a framework of effective field theory. The deuteron charge monopole and quadrupole form factors G[subscript C] and G[subscript Q] were separated with improved precision, and the location of the first node of G[subscript C] was confirmed at Q=4.19±0.05 fm[superscript -1]. The new data provide a strong constraint on theoretical models in a momentum transfer range covering the minimum of T[subscript 20] and the first node of G[subscript C]., National Science Foundation (U.S.), United States. Dept. of Energy

Published
2012

3. Role of mesons in the electromagnetic form factors of the nucleon

Author

Bates Linear Accelerator Center, Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Redwine, Robert P., Akdogan, Taylan, Bertozzi, William, Botto, Tancredi, Clasie, Benjamin Michael Patrick, DeGrush, Adam J., Donnelly, T. William, Dow, Karen A., Farkhondeh, Manouchehr, Fatemi, Renee, Franklin, Wilbur, Gilad, Shalev, Hasell, Douglas K., Lomon, Earle L., Maschinot, Aaron Joseph, Matthews, June L., Meitanis, Nikolas, Milner, Richard G., Seely, J., Sirca, Simon, Six, E., Shinozaki, A., Tschalaer, Christoph, Tsentalovich, Evgeni P., Turchinetz, William E., Xiao, Y., Zhang, C., Zhou, Z., Ziskin, Vitaliy, Zwart, T., Kolster, Hauke, Bates Linear Accelerator Center, Massachusetts Institute of Technology. Department of Nuclear Science and Engineering, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Redwine, Robert P., Akdogan, Taylan, Bertozzi, William, Botto, Tancredi, Clasie, Benjamin Michael Patrick, DeGrush, Adam J., Donnelly, T. William, Dow, Karen A., Farkhondeh, Manouchehr, Fatemi, Renee, Franklin, Wilbur, Gilad, Shalev, Hasell, Douglas K., Lomon, Earle L., Maschinot, Aaron Joseph, Matthews, June L., Meitanis, Nikolas, Milner, Richard G., Seely, J., Sirca, Simon, Six, E., Shinozaki, A., Tschalaer, Christoph, Tsentalovich, Evgeni P., Turchinetz, William E., Xiao, Y., Zhang, C., Zhou, Z., Ziskin, Vitaliy, Zwart, T., and Kolster, Hauke

Abstract

The roles played by mesons in the electromagnetic form factors of the nucleon are explored using as a basis a model containing vector mesons with coupling to the continuum together with the asymptotic Q2 [Q superscript 2] behavior of perturbative QCD. Specifically, the vector dominance model (GKex) developed by E. L. Lomon is employed, as it is known to be very successful in representing the existing high-quality data published to date. An analysis is made of the experimental uncertainties present when the differences between the GKex model and the data are expanded in orthonormal basis functions. A main motivation for the present study is to provide insight into how the various ingredients in this model yield the measured behavior, including discussions of when dipole form factors are to be expected or not, of which mesons are the major contributors, for instance, at low Q2 [Q superscript 2] or large distances, and of what effects are predicted from coupling to the continuum. Such insights are first discussed in momentum space, followed by an analysis of how different and potentially useful information emerges when both the experimental and theoretical electric form factors are Fourier transformed to coordinate space. While these Fourier transforms should not be interpreted as “charge distributions,” nevertheless the roles played by the various mesons, especially those which are dominant at large or small distance scales, can be explored via such experiment–theory comparisons., United States. Dept. of Energy (Cooperative agreement DEFC02- 94ER40818), National Science Foundation (U.S.) (Grant no. PHY-0855584)

Published
2011

4. A measurement of the neutron magnetic form factor Gn̳M̳ form quasi-elastic ²[right arrow]H ([right arrow]e, e') at low Q²

Author

Richard Milner., Massachusetts Institute of Technology. Dept. of Physics., Meitanis, Nikolas (Nikolas C.), Richard Milner., Massachusetts Institute of Technology. Dept. of Physics., and Meitanis, Nikolas (Nikolas C.)

Abstract

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2006., In title on t.p., double-underscored characters: "n" appears as superscript and under subscript "M"; [right arrow] appears as the symbol above the letters "H" and "e"., Includes bibliographical references (p. 200-207)., The neutron magnetic form factor GnM has been measured using the inclusive electro-disintegration 2H(e, e') of the deuteron for the first time. The longitudinally polarized electron beam of the MIT-Bates Linear Accelerator was used in conjunction with an isotopically pure, polarized deuterium internal gas target. The Bates Large Acceptance Spectrometer Toroid (BLAST) was used for the measurement. The form factor GnM was extracted from the ratio of the inclusive asymmetry [alpha]Ved in perpendicular over parallel kinematics and at Q2 = 0.135, 0.189, 0.252, 0.316 (GeV/c)2., by Nikolas Meitanis., Ph.D.

Published
2007

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