What do we know about the Q sup 2 evolution of the Gerasimov-Drell-Hearn sum rule
Technical Report
·
OSTI ID:7029908
- Continuous Electron Beam Accelerator Facility, Newport News, VA (United States)
- Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)
We study contributions from baryon resonance excitations to the Q{sup 2} dependence of the Gerasimov-Drell-Hearn sum rule. The results indicate that the sum rule at small Q{sup 2} is largely saturated by contribution from the lower mass resonant states. We find a strong Q{sup 2} dependence of the resonant contributions, leading even to a sign change of the sum rule integral at Q{sup 2} {approx equal} O.8GeV{sup 2}. The global Q{sup 2} dependence indicates discrepancies to the interpretation of the EMC polarized structure function data on A{sub 1}{sup p} in the resonance region, which can be largely attributed to the elimination of the P{sub 33}(1232) resonance from the EMC analysis.
- Research Organization:
- Southeastern Universities Research Association, Inc., Newport News, VA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 7029908
- Report Number(s):
- DOE/ER/40150-200; CEBAF-PR-92-017; ON: DE93000828
- Country of Publication:
- United States
- Language:
- English
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What do we know about the Q{sup 2} evolution of the Gerasimov-Drell-Hearn sum rule?
What do we know about the [ital Q][sup 2] evolution of the Gerasimov-Drell-Hearn sum rule
What do we know about the [ital Q][sup 2] evolution of the Gerasimov-Drell-Hearn sum rule
Technical Report
·
Thu Oct 01 00:00:00 EDT 1992
·
OSTI ID:7029908
What do we know about the [ital Q][sup 2] evolution of the Gerasimov-Drell-Hearn sum rule
Conference
·
Sat Dec 05 00:00:00 EST 1992
· AIP Conference Proceedings (American Institute of Physics); (United States)
·
OSTI ID:7029908
What do we know about the [ital Q][sup 2] evolution of the Gerasimov-Drell-Hearn sum rule
Journal Article
·
Fri Jan 01 00:00:00 EST 1993
· Physical Review, D (Particles Fields); (United States)
·
OSTI ID:7029908
Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
STRUCTURE FUNCTIONS
SUM RULES
CROSS SECTIONS
M1-TRANSITIONS
PROTONS
QUARK MODEL
SPIN
ANGULAR MOMENTUM
COMPOSITE MODELS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EQUATIONS
FERMIONS
FUNCTIONS
HADRONS
MATHEMATICAL MODELS
MULTIPOLE TRANSITIONS
NUCLEONS
PARTICLE MODELS
PARTICLE PROPERTIES
662410* - Properties of Baryons & Baryon Resonances- (1992-)
BARYONS
STRUCTURE FUNCTIONS
SUM RULES
CROSS SECTIONS
M1-TRANSITIONS
PROTONS
QUARK MODEL
SPIN
ANGULAR MOMENTUM
COMPOSITE MODELS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EQUATIONS
FERMIONS
FUNCTIONS
HADRONS
MATHEMATICAL MODELS
MULTIPOLE TRANSITIONS
NUCLEONS
PARTICLE MODELS
PARTICLE PROPERTIES
662410* - Properties of Baryons & Baryon Resonances- (1992-)