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G. Ron; J. Glister; B. Lee; K. Allada; W. Armstrong; J. Arrington; A. Beck; F. Benmokhtar; B.L. Berman; W. Boeglin; E. Brash; A. Camsonne; J. Calarco; J. P. Chen; Seonho Choi; E. Chudakov; L. Coman; B. Craver; F. Cusanno; J. Dumas; C. Dutta; R. Feuerbach; A. Freyberger; S. Frullani; F. Garibaldi; R. Gilman; O. Hansen; D. W. Higinbotham; T. Holmstrom; C.E. Hyde; H. Ibrahim; Y. Ilieva; C. W. de Jager; X. Jiang; M. K. Jones; A. Kelleher; E. Khrosinkova; E. Kuchina; G. Kumbartzki; J. J. LeRose; R. Lindgren; P. Markowitz; S. May-Tal Beck; E. McCullough; D. Meekins; M. Meziane; Z.-E. Meziani; R. Michaels; B. Moffit; B.E. Norum; Y. Oh; M. Olson; M. Paolone; K. Paschke; C. F. Perdrisat; E. Piasetzky; M. Potokar; R. Pomatsalyuk; I. Pomerantz; A. Puckett; V. Punjabi; X. Qian; Y. Qiang; R. Ransome; M. Reyhan; J. Roche; Y. Rousseau; A. Saha; A.J. Sarty; B. Sawatzky; E. Schulte; M. Shabestari; A. Shahinyan; R. Shneor; S. E. Sirca; K. Slifer; P. Solvignon; J. Song; R. Sparks; R. Subedi; S. Strauch; G. M. Urciuoli; K. Wang; B. Wojtsekhowski; X. Yan; H. Yao; X. Zhan; X. Zhu
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Funding organisation: USDOE - Office of Energy Research (ER) (United States)2007
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Funding organisation: USDOE - Office of Energy Research (ER) (United States)2007
AbstractAbstract
[en] High precision measurements of the proton elastic form factor ratio have been made at four-momentum transfers, Q2, between 0.2 and 0.5 GeV2. The new data, while consistent with previous results, clearly show a ratio less than unity and significant differences from the central values of several recent phenomenological fits. By combining the new form-factor ratio data with an existing cross-section measurement, one finds that in this Q2 range the deviation from unity is primarily due to GEp being smaller than the dipole parameterization
Primary Subject
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3 Jul 2007; vp; DOE/OR--23177-0082; AC05-06OR23177; Available from http://www1.jlab.org/Ul/Publications/documents/ledex-2.pdf; PURL: https://www.osti.gov/servlets/purl/909379-3Sbntf/
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Report
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AbstractAbstract
[en] Measurements of particle emission, linear momentum transfer and angular momentum transfer have been used to explore reaction mechanisms in the intermediate energy range where qualitatively different nuclear processes may be observable. The current status of our understanding of heavy ion reaction mechanisms with projectiles having velocities comparable to the velocity of sound and the Fermi velocity is summarized. (orig.)
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Source
International conference on selected aspects of heavy ion reactions; Saclay, France; 3 - 7 May 1982
Record Type
Journal Article
Literature Type
Conference; Progress Report
Journal
Nuclear Physics. A; ISSN 0375-9474;
; v. 387 p. 65c-78c

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AbstractAbstract
[en] The anomaly in the dynamics of the orbital vector l in superfluid 3He-A, which corresponds to the chiral anomaly and zero-charge effect in 3 + 1 quantum field theory (QFT) with chiral fermions, is considered in the presence of superflow. The hydrodynamic action which describes the dynamics of both the l vector and the superfluid velocity Vs field, is derived at T=0 in the collisionless limit using the fact that in the vicinity of the gap nodes the Bogoliubov quasiparticles behave as chiral relativistic fermions. While the quantity B=kFl plays the part of the vector potential of the effective electromagnetic field acting on the chiral fermions, the combination B4=kF(vsl) corresponds to the scalar component of th electromagnetic field. As a result the vs field contributes to the Wess-Zumino term in the action which is responsible for the chiral anomaly. In the collisionless limit the hydrodynamic momentum is conserved but is not well-defined because of the chiral anomaly: due to the flow of the quasiparticle energy levels through the gap nodes during the dynamics of l, the linear momentum of the liquid depends on the prehistory of the l field and therefore cannot be expressed in terms of the instantaneous values of l and vs. In the opposite limit the quasiparticle scattering on the container wall becomes important. As a result the quasiparticles which fill the energy levels crossing the gap nodes are removed from the coherent motion of liquid and their linear momentum transfer to the walls at a rate dictated by the level flow process. In this limit the linear momentum is well defined in terms of l and vs but is not conserved. This nonconservation of the hydrodynamic linear momentum is analogous to the nonconservation of the chiral charge in QFT with chiral anomaly. It leads to an additional force acting on the moving quantized vortices, which resembled the Iordanskii force. 10 refs
Source
Translated from Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki; 102: No. 6, 1838-1853(Dec 1992).
Record Type
Journal Article
Literature Type
Translation
Journal
Journal of Experimental and Theoretical Physics; ISSN 1063-7761;
; CODEN JXTPAS; v. 75(6); p. 990-997

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Khater, A.F.
Centro Latino Americano de Fisica (CLAF), Rio de Janeiro, RJ (Brazil)1980
Centro Latino Americano de Fisica (CLAF), Rio de Janeiro, RJ (Brazil)1980
AbstractAbstract
[en] The theory of acoustic excitation scattering in the surface of Brilloiun of opaque materials, is related to the question of momentum transfexed from radiation fields to the material when the incident eight is scattered in a measurable spectrum. (A.C.A.S.)
[pt]
Neste trabalho faz-se um estudo da teoria de espalhamento das excitacoes acusticas nas superficies de materiais opacos, de Brilloiun envolvendo a questao do momento transferido dos campos de radiacao para o material quando a luz incidente e espalhada num espectro mensuravel. (A.C.A.S.)Original Title
Transferencia de momentum num espalhamento de superficie, de Brillouin
Source
1980; 4 p; Latin American Colloquium on Surface Physics; Niteroi, RJ (Brazil); 1 Dec 1980
Record Type
Miscellaneous
Literature Type
Conference
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LanguageLanguage
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AbstractAbstract
[en] The evolving way in which high-energy, small-momentum-transfer processes have been described over the past 30 years is briefly reviewed. (physics of our days)
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Source
Available from http://dx.doi.org/10.1070/PU2000v043n02ABEH000662; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
Journal
Physics Uspekhi; ISSN 1063-7869;
; v. 43(2); p. 177-180

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AbstractAbstract
[en] This conference report summarizes the contributions to, and discussions at, the 1st Asia-Pacific Transport Working Group Meeting held in Toki, Japan, on 14–17 June 2011. The topics of the meeting were organized under four main headings: momentum transport, non-locality in transport, edge turbulence and L–H transition and 3D effects on transport physics. The events which initiated this meeting are also described in this report. (conference report)
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S0029-5515(12)07858-1; Available from http://dx.doi.org/10.1088/0029-5515/52/2/027001; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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AbstractAbstract
[en] Scattering probe particles from a quantum system can provide experimental access to information about the system’s state. However, measurement backaction and momentum transfer during scattering changes the state of the system, potentially destroying the state we wish to probe. Here we investigate how to probe the system’s initial state even in the presence of backaction and momentum transfer. We show that summing the scattering distributions of an ensemble of measurements reveals the initial state scattering pattern even when each of the individual measurements completely destroys the initial state. This procedure is effective provided the scattering takes place on a timescale that is short compared with the free evolution of the system. (paper)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/0953-4075/46/20/205301; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Physics. B, Atomic, Molecular and Optical Physics; ISSN 0953-4075;
; CODEN JPAPEH; v. 46(20); [6 p.]

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AbstractAbstract
[en] We have studied the pion form factor Fπ(Q2) at large momentum transfers within the framework of the statistical model. Using the wave-function ψ(p) suggested from the model as an input, our computed results of Fπ(Q2) foretell an exact zero at Q2 = 3.3 GeV2. Further, unlike other theoretical estimates, our computed results for the hard part of Fπ(Q2) not only agree reasonably well with the corresponding experimental findings for large Q2, i.e., for 4 ≤ Q2 ≤ 20 in GeV2 but its asymptotic fall with Q2 compares favourably with the corresponding falling off of Fπ exp (Q2). (orig.)
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Journal Article
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Gaveau, B; Schulman, L S, E-mail: schulman@clarkson.edu2012
AbstractAbstract
[en] Possible definitions for the relative momentum of identical particles are considered. (fast track communication)
Primary Subject
Source
Available from http://dx.doi.org/10.1088/1751-8113/45/46/462001; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Physics. A, Mathematical and Theoretical (Online); ISSN 1751-8121;
; v. 45(46); [7 p.]

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Vadim Guzey
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Funding organisation: USDOE - Office of Science (Seychelles) (US)2008
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States). Funding organisation: USDOE - Office of Science (Seychelles) (US)2008
AbstractAbstract
[en] Using a simple model for nuclear GPDs, we study the role of the neutron contribution to nuclear DVCS observables. As an example, we use the beam-spin asymmetry ALUA measured in coherent and incoherent DVCS on a wide range of nuclear targets in the HERMES and JLab kinematics. We find that at small values of the momentum transfer t, ALUA is dominated by the coherent-enriched contribution, which enhances ALUA compared to the free proton asymmetry ALUp, ALUA(φ)/ALUp(φ)=1.8-2.2. At large values of t, the nuclear asymmetry is dominated by the incoherent contribution and ALUA/(φ)ALUp(φ)=0.66-0.74. The deviation of ALUA(φ)/ALUp(φ) from unity at large t is a result of the neutron contribution, which gives a possibility to constrain neutron GPDs in incoherent nuclear DVCS. A similar trend is expected for other DVCS asymmetries
Primary Subject
Source
22 Jan 2008; 24 p; DOE/OR--23177-0275; AC05-06OR23177; Available from http://www1.jlab.org/Ul/Publications/documents/ACF7B2.pdf; PURL: https://www.osti.gov/servlets/purl/922245-9b8AKd/
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Report
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