Measurements of the deuteron elastic structure function
The deuteron elastic structure function A(Q{sup 2}) has been extracted in the range of 0.7 {le} Q{sup 2} {le} 6.0 (GeV/c){sup 2} from cross section measurements of elastic electron-deuteron in coincidence. Measurements of the elastic deuteron electromagnetic form factors offer unique opportunities to test models of short-range aspects of the nucleon-nucleon interaction, meson-exchange currents, isobaric configurations and, quark degrees of freedom. The elastic electron-deuteron cross section is given by d{sigma}/d{Omega} = {sigma}{sub M}[A(Q{sup 2}) + B(Q{sup 2}) tan{sup 2}({theta}/2)] where {theta} is the electron scattering angle, {sigma}{sub M} = {alpha}{sup 2}E{prime} cos{sup 2} ({theta}/2)/[4E{sup 3} sin{sup 4}({theta}/2)] is the Mott cross section, {alpha} is the fine-structure constant, E and E{prime} are the incident and scattered electron energies and Q{sup 2} = 4EE{prime} sin{sup 2}({theta}/2) is the four momentum transfer squared. The deuteron elastic structure functions A(Q {sup 2}) and B(Q{sup 2}) are given in terms of the charge, quadrupole and magnetic form factors F{sub c}(Q{sup 2}), F{sub 1}(Q{sup 2}) and F{sub m}(Q{sup 2}) by A(Q{sup 2}) = F{sub c}{sup 2}(Q{sup 2}) + (8/9){tau}{sup 2} F{sub 1}{sup 2}(Q{sup 2}) + (2/3){tau}F{sub m}{sup 2}(Q{sup 2}) and B(Q{sup 2}) = (4/3){tau}(1+{tau})F{sub m}{sup 2}(Q{sup 2}) and to resolve inconsistencies in previous data sets by measuring elastic electron-deuteron (e-d) cross sections for 0.7 {le} Q{sup 2} {le} 6.0 (GeV/c){sup 2}.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 755566
- Report Number(s):
- DOE/ER/40150-1456; JLAB-PHY-98-01; TRN: US0301371
- Journal Information:
- Few Body Syst.Suppl.10:431-434,1999, Other Information: 16th European Conference On Few-Body Problems In Physics (FB 98), 1-6 Jun 1998, Autrans, Grenoble, F; PBD: 1 Jun 1998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the deuteron elastic structure functions at large momentum transfers
Medium energy nuclear physics research
Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSON-EXCHANGE MODELS
CROSS SECTIONS
DEGREES OF FREEDOM
DEUTERONS
ELECTROMAGNETIC FORM FACTORS
ELECTRONS
FINE STRUCTURE
FORM FACTORS
FOUR MOMENTUM TRANSFER
NUCLEON-NUCLEON INTERACTIONS
QUADRUPOLES
QUARKS
SCATTERING
STRUCTURE FUNCTIONS