W. Boeglin
Florida International University
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Featured researches published by W. Boeglin.
Journal of Physics G | 2003
Misak M. Sargsian; J. Arrington; W. Bertozzi; W. Boeglin; Carl E. Carlson; D. Day; L. Frankfurt; K. S. Egiyan; R. Ent; Shalev Gilad; K. A. Griffioen; D. W. Higinbotham; S. E. Kuhn; W. Melnitchouk; Gerald A. Miller; E. Piasetzky; Stepan Stepanyan; Mark Strikman; L. B. Weinstein
Quantum chromodynamics (QCD), the microscopic theory of strong interactions, has not yet been applied to the calculation of nuclear wavefunctions. However, it certainly provokes a number of specific questions and suggests the existence of novel phenomena in nuclear physics which are not part of the traditional framework of the meson–nucleon description of nuclei. Many of these phenomena are related to high nuclear densities and the role of colour in nucleonic interactions. Quantum fluctuations in the spatial separation between nucleons may lead to local high-density configurations of cold nuclear matter in nuclei, up to four times larger than typical nuclear densities. We argue here that experiments utilizing the higher energies available upon completion of the Jefferson Laboratory energy upgrade will be able to probe the quark–gluon structure of such high-density configurations and therefore elucidate the fundamental nature of nuclear matter. We review three key experimental programmes: quasi-elastic electro-disintegration of light nuclei, deep inelastic scattering from nuclei at x > 1 and the measurement of tagged structure functions. These interrelated programmes are all aimed at the exploration of the quark structure of high-density nuclear configurations. The study of the QCD dynamics of elementary hard processes is another important research direction and nuclei provide a unique avenue to explore these dynamics. In particular, we argue that the use of nuclear targets and large values of momentum transfer at energies available with the Jefferson Laboratory upgrade would allow us to determine whether the physics of the nucleon form factors is dominated by spatially small configurations of three quarks. Similarly, one could determine if hard two-body processes such as exclusive vector meson electroproduction are dominated by production of mesons in small-size q configurations.
Physical Review Letters | 2007
B. Clasie; X. Qian; J. Arrington; R. Asaturyan; F. Benmokhtar; W. Boeglin; P. Bosted; A. Bruell; M. E. Christy; E. Chudakov; Wim Cosyn; M. M. Dalton; A. Daniel; D. Day; D. Dutta; L. El Fassi; R. Ent; H. Fenker; J. Ferrer; N. Fomin; H. Gao; K. Garrow; D. Gaskell; C. Gray; T. Horn; Günter Huber; M. Jones; N. Kalantarians; Cynthia Keppel; K. Kramer
We have measured the nuclear transparency of the A(e,epi+) process in 2H, 12C, 27Al, 63Cu, and 197Au targets. These measurements were performed at the Jefferson Laboratory over a four momentum transfer squared range Q2=1.1 to 4.7 (GeV/c)2. The nuclear transparency was extracted as the super-ratio of (sigmaA/sigmaH) from data to a model of pion-electroproduction from nuclei without pi-N final-state interactions. The Q2 and atomic number dependence of the nuclear transparency both show deviations from traditional nuclear physics expectations and are consistent with calculations that include the quantum chromodynamical phenomenon of color transparency.
Journal of Physics G | 2014
P. Monaghan; R. Shneor; R. Subedi; B. D. Anderson; K. A. Aniol; J. R. M. Annand; J. Arrington; H B Benaoum; F Benmokhtar; P. Y. Bertin; W. Bertozzi; W. Boeglin; J. P. Chen; Seonho Choi; E. Chudakov; C Ciofi degli Atti; E. Cisbani; Wim Cosyn; B. Craver; C. W. de Jager; R. J. Feuerbach; E. Folts; S. Frullani; F. Garibaldi; O. Gayou; S. Gilad; R. Gilman; O. Glamazdin; J. Gomez; O. Hansen
The five-fold differential cross section for the 12C(e,ep)11B reaction was determined over a missing momentum range of 200-400 MeV/c, in a kinematics regime with Bjorken x > 1 and Q2 = 2.0 (GeV/c)2. A comparison of the results and theoretical models and previous lower missing momentum data is shown. The theoretical calculations agree well with the data up to a missing momentum value of 325 MeV/c and then diverge for larger missing momenta. The extracted distorted momentum distribution is shown to be consistent with previous data and extends the range of available data up to 400 MeV/c.
Archive | 1999
S. Kerhoas; P. Bartsch; J. Berthot; P. Y. Bertin; Vincent Breton; W. Boeglin; R. Böhm; N. d’Hose; T. Caprano; S. Derber; N. Degrande; M. O. Distler; J.E. Ducret; R. Edelhoff; I. Ewald; H. Fonvieille; J. Friedrich; R. Geiges; Th. Gousset; P.A.M. Guichon; H. Holvoet; Ch. Hyde-Wright; P. Jennewein; M. Kahrau; M. Korn; H. Kramer; K. W. Krygier; V. Kunde; B. Lannoy; D. Lhuillier
The virtual Compton scattering (VCS) is the electron scattering on a proton which radiates a real photon before being detected. The new observables, called Generalized Polarizabilities (GP), extracted from this VCS at threshold can be understood as the deformation of the charge and current distributions of the proton [1]. These GP are functions of the mass of the virtual photon Q2. In real Compton scattering (Q2 = 0), some polarizabilities of the nucleon are already measured [2]. With the VCS, we will generalize these observables by measuring them at different values of Q2.
arXiv: Nuclear Experiment | 2013
Aleksandrs Aleksejevs; R. White; Y. Qiang; W. I. Levine; F. Close; E. Chudakov; T. Whitlatch; G. J. Lolos; V. Crede; I. Senderovich; N. Jarvis; J. Leckey; P. Mattione; S.T. Krueger; Eric S. Swanson; A. Ponosov; Adam P. Szczepaniak; M.J. Staib; P. Collins; A. Somov; P. Khetarpal; P. Eugenio; O. Soto; R. A. Schumacher; D. Lawrence; F. Klein; S. Somov; E. Wolin; J. Hardin; S. Taylor
arXiv: High Energy Physics - Experiment | 2012
M. Dugger; P. Eugenio; Jozef J. Dudek; R. A. Schumacher; D. Lawrence; F. Klein; D. Bennett; H. Egiyan; B. G. Ritchie; Günter Huber; M. M. Ito; W. K. Brooks; E. Pooser; P. Ioannou; L. Pentchev; L. Gan; A. Barnes; F. Close; C. Kourkoumeli; M. Tahani; D. I. Sober; J. Bennett; P. Ambrozewicz; L. Guo; H. Al Ghoul; J. Leckey; N. Sparks; A. Semenov; F. Barbosa; G. J. Lolos
Proceedings of the International Conference on `The Structure of Baryons' (Bonn, Germany, September 22-26, 1998), Ed. D. Menze, World Scientific Publ. Co, (Singapore), ISBN 981-02-3865-7 (1999) | 2000
N. d'Hose; P. Bartsch; J. Berthot; P. Y. Bertin; Breton; W. Boeglin; R. Böhm; T. Caprano; S. Derber; N. Degrande; M. Ding; M. O. Distler; J.E. Ducret; R. Edelhoff; I. Ewald; H. Fonvieille; J. Friedrich; R. Geiges; Th. Gousset; P.A.M. Guichon; H. Holvoet; Ch. Hyde-Wright; P. Jennewein; M. Kahrau; S. Kerhoas; M. Korn; H. Kramer; K. W. Krygier; Kunde; B. Lannoy
Proceedings of the International Nuclear Physics Conference INPC98 (Paris, France, August 24-28, 1998), Nucl. Phys. A654 (1999) 547c-551c | 1999
J. Roche; P. Bartsch; J. Berthot; P. Y. Bertin; Breton; W. Boeglin; R. Böhm; N. d'Hose; U Capran; T. Caprano; S. Derber; N. Degrande; M. O. Distler; J.E. Ducret; R. Edelhoff; I. Ewald; H. Fonvieille; J. Friedrich; R. Geiges; Th. Gousset; P.A.M. Guichon; H. Holvoet; Ch Hyde-Wricht; P. Jennewein; M. Kahrau; S. Kerhoas; M. Korn; H. Kramer; K. W. Krygier; Kunde
FEW-BODY PROBLEMS IN PHYSICS '98 | 1999
S. Kerhoas; P. Bartsch; J. Berthot; P. Y. Bertin; Breton; W. Boeglin; R. Böhm; N. d'Hose; T. Caprano; S. Derber; N. Degrande; M. O. Distler; J.E. Ducret; R. Edelhoff; I. Ewald; H. Fonvieille; J. Friedrich; R. Geiges; Th. Gousset; P.A.M. Guichon; H. Holvoet; C. Hyde-Wright; P. Jennewein; M. Kahrau; M. Korn; H. Kramer; K. W. Krygier; Kunde; B. Lannoy; D. Lhuillier