New Measurements of the Proton Electromagnetic Form Factor Ratio at Low
β Scribed by G. Ron; J. Glister; X. Zhan
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 211 KB
- Volume
- 827
- Category
- Article
- ISSN
- 0375-9474
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The ratio of the proton elastic electromagnetic form factors, GE/GM, has been measured for Q2 values from 0.5 to 3.5 (GeV/c) 2. The ratio was found to decrease with increasing Q2, in contrast with an approximately constant value indicated by earlier experiments.
We analyze the electromagnetic form factors of the nucleon to fourth order in relativistic baryon chiral perturbation theory. We employ the recently proposed infrared regularization scheme and show that the convergence of the chiral expansion is improved as compared to the heavy-fermion approach. We