Violation de Parité
The Fit of Simon et al.[6],
and B. Beise et al.[7]
for the Dirac form factors and
Sachs form factors are represented on figures 1,2 and 3.
Figure 1: Dirac Form Factors for the proton. Results from the fit
B. Beise, et al.
Figure 2: Sachs Form Factors for the proton. Results from the fit
B. Beise, et al.
Figure 3: Sachs Form Factors for the proton. Results from the fit of Simon et al. : comparison with a dipole fit, using
M=0.842 GeV
The differential cross section is given by
This cross section and the associated counting rate for an experiment running
at 4.35 GeV, , on an liquid hydrogen target with density with a spectrometer at with a total acceptance of 16 msr are presented on figure 4 and 5.
Figure 4: Cross section (Beise) for ep elastic scattering.Counting rate for an experiment running
at 4.35 GeV, , on an liquid hydrogen target with density using a spectrometer with a total acceptance of 16 msr.
Figure 5: Cross section (Beise) for ep elastic scattering.Counting rate for an experiment running
at 4.35 GeV, , on an liquid hydrogen target with density using a spectrometer at with a total acceptance of 16 msr.
References
- 1
-
F. Halzen, A. Martin, ``Quarks & leptons'' (1984) John Wiley & Sonns, Inc.
- 2
- S. Weinberg,Phys. Rev. D5 (1972) 1412.
- 3
- E. Reya, et al.,
" Neutral current effect in elastic eN scattering ", Phys. Rev. D10 (1974) 952
- 4
- D. Beck, Phys. Rev. D39 (1989) 3248.
- 5
- A. Manohar, Nucl. Phys. B310 (1988) 527
- 6
- Simon et al., Nucl. Phys. A333 (1980) 381.
- 7
- B. Beise et al., Com. Nucl. Part. Phys. (1991) Vo. 20, No.3, 105.
- 8
- Galster et al., Nucl. Phys. B32 (1971) 221.
- 9
- SAMPLE Collaboration.
E.J. Beise, et al., "Parity violating electron scattering from hydrogen and deuterium". NUCLEX-9602001, Feb 1996. 9pp. Presented at 9th
Amsterdam Miniconference on Electromagnetic Studies of the Deuteron,
Amsterdam, Netherlands, 1-2 Feb,1996.
- 10
- P. Souder, et al., CEBAF Experiment PR-91-010.
- 11
- B. Beise, et al., CEBAF Experiment PR-91-004.
- 12
- A4 Collaboration.
- 13
- H. Fontvieille, École Joliot Curie, 1992.
- 14
- M. Musolf, Nucl. Phys. 546A (1992) 509.
- 15
- R. C. Walker et al., Phys. Rev. D49 (1994) 5671.
- 16
- H. Anklin, et al., Phys. Lett. B336(1994) 313.
- 17
- P. Markowitz, et al., Phys. Rev. C 48 (1993) R5.
- 18
- H. Gao, et al., Phys. Rev. C 50 (1994) R546.
- 19
- T. Eden, et al., Phys. Rev. C 50 (1994) R1749.
- 20
- M. Meyerhoff, et al., Phys. Lett. B327 (1994) 201.
- 21
- E. Bruins, et al., Phys. Rev. Lett. 75 (1994) 21.
- 22
- C. Jones, et al., Phys. Rev. C44 (1991) R571.
- 23
- M. Musolf, et al.,Phys. Rep. 239 (1994)Vol 1 & 2
- 24
- A. Thompson, et al., Phys. Rev. Lett. 68 (1992) 2901.
- 25
- R. Jaffe,Phys. Lett. B229 (1989) 275.
- 26
- Park et al.,Phys. Rev. D43 (1991) 169.
- 27
- Park et al., Nucl. Phys. A451 (1992) 453.
- 28
- H. Weigel, et al., Phys. Lett. B353 (1995) 20.
A. Abada et al., hep-ph/9508323, talk given at Hadrons 95, Manchester.
- 29
- G. Garvey et al., Phys. Rev. C48 (1993) 761.
- 30
- G. Garvey, "Internal Spin Structure of the Nucleon", Ed. by V. W. Hughes and C. Cavata, 1995, World Scientific, p69.
- 31
- R. Engelmann et al., Phys. Rev. D28 (1983) 436.
- 32
- K. Milner et al.,Phys. Rev. D26 (1982) 537.
- 33
- N. Baker et al.,Phys. Rev. D23 (1981) 2499
- 34
- L. Ahrens et al.,Phys. Lett. B202 (1988) 284.
- 35
- V. Barone et al., Z. Phys. C70 (1996) 83.
- 36
- A. Bazarko et al., Z. Phys. C65 (1995) 189.
- 37
- S. Rabinowitz et al., Phys. Rev. Lett. 70 (1993) 134
- 38
- R. Turlay et al., Z. Phys. C15 (1982) 19.
R. Turlay et al., Z. Phys. C17 (1983) 283.
- 39
- SMC Collaboration, CERN-PPE/ 95-178
- 40
- A. Manohar, UCSD/PTH 92-10
- 41
- A. D. Martin, et al.,Phys. Rev. D 50 (1994) 6734.
- 42
- A. D. Martin, et al.,Phys. Lett. B387 (1996) 6734.