Electroproduction of mesons in the resonance region at high momentum transfer
Journal Article
·
· Physical Review. C, Nuclear Physics
The differential cross section for the process p(e,e{prime}p) {eta} has been measured at Q{sup 2} {approx} 5.7 and 7.0(GeV/c){sup 2} for center-of-mass energies from threshold to 1.8 GeV, encompassing the S{sub 11}(1535) resonance, which dominates the channel. This is the highest momentum-transfer measurement of this exclusive process to date. The helicity-conserving transition amplitude A{sub 1/2}, for the production of the S{sub 11}(1535) resonance, is extracted from the data. Within the limited Q{sup 2} now measured, this quantity appears to begin scaling as Q{sup -3} - a predicted, but not definitive, signal of the dominance of perturbative QCD at Q{sup 2} {approx} 5 (GeV/c){sup 2}.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF); South African National Research Association
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 962875
- Report Number(s):
- ANL/PHY/JA-61197; PRVCAN; TRN: US0902955
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 80, Issue 1; ISSN 0556-2813
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Electroproduction of mesons in the resonance region at high momentum transfer
Study of and evidence for decaying into
Observation of the and in the process
Journal Article
·
Wed Jul 01 00:00:00 EDT 2009
· Physical Review. C, Nuclear Physics
·
OSTI ID:962875
+75 more
Study of and evidence for decaying into
Journal Article
·
Tue Dec 24 00:00:00 EST 2019
· Physical Review D
·
OSTI ID:962875
+447 more
Observation of the and in the process
Journal Article
·
Mon Aug 24 00:00:00 EDT 2020
· Physical Review D
·
OSTI ID:962875
+488 more