Rearranging Pionless Effective Field Theory
Description
We point out a redundancy in the operator structure of the pionless effective field theory which dramatically simplifies computations. This redundancy is best exploited by using dibaryon fields as fundamental degrees of freedom. In turn, this suggests a new power counting scheme which sums range corrections to all orders. We explore this method with a few simple observables: the deuteron charge form factor, n p -> d gamma, and Compton scattering from the deuteron. Higher dimension operators involving electroweak gauge fields are not renormalized by the s-wave strong interactions, and therefore do not scale with inverse powers of the renormalization scale. Thus, naive dimensional analysis of these operators is sufficient to estimate their contribution to a given process
Availability note (English)
Available from Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)Additional details
Publishing Information
- Imprint Pagination
- 212 Kilobytes
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 36060767
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- COMPTON EFFECT; DEGREES OF FREEDOM; DEUTERONS; DIBARYONS; DIMENSIONS; FORM FACTORS; REDUNDANCY; RENORMALIZATION; STRONG INTERACTIONS
- Descriptors DEC
- BARYONS; BASIC INTERACTIONS; CHARGED PARTICLES; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERACTIONS; PARTICLE PROPERTIES; SCATTERING
Optional Information
- Contract/Grant/Project number
- AC--05-84ER40150
- Notes
- Also published in journal: Nuclear Physics, A; ISSN 0375-9474; NUPABL; v. 694
- Funding organization
- USDOE Office of Energy Research ER (United States)
- Secondary number(s)
- JLAB-THY--00-63; DOE/ER--40150-3336; NUCL-TH--0011067