期刊
PHYSICAL REVIEW LETTERS
卷 128, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.132502
关键词
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资金
- U.S. Department of Energy [DE-FG02-03ER41231, DE-FG02-97ER41033, DE-FG02-97ER41041, DE-FG02-97ER41046, DE-FG02-97ER41042, DE-SC0005367, DE-SC0015393, DE-SC0016581, DE-SC0016656]
- National Science Foundation [NSF-PHY-0619183, NSF-PHY-1309130, NSF-PHY-1714833]
- UK Science and Technology Facilities Council [ST/L005794/1, ST/P004423/1]
- Columbian College of Arts and Sciences at The George Washington University
- Natural Sciences and Engineering Research Council of Canada
- Eugen Merzbacher Fellowship
- U.S. Department of Energy (DOE) [DE-SC0005367, DE-SC0016656, DE-FG02-97ER41046, DE-SC0016581] Funding Source: U.S. Department of Energy (DOE)
Differential cross sections for Compton scattering from the proton were measured using quasimonoenergetic and polarized photon beams. The results were used to extract the electromagnetic dipole polarizabilities of the proton within the chiral effective field theory framework.
Differential cross sections for Compton scattering from the proton have been measured at scattering angles of 55??, 90??, and 125?? in the laboratory frame using quasimonoenergetic linearly (circularly) polarized photon beams with a weighted mean energy value of 83.4 MeV (81.3 MeV). These measurements were performed at the High Intensity Gamma-Ray Source facility at the Triangle Universities Nuclear Laboratory. The results are compared to previous measurements and are interpreted in the chiral effective field theory framework to extract the electromagnetic dipole polarizabilities of the proton, which gives ??pE1 = 13.8 ?? 1.2stat ?? 0.1BSR ?? 0.3theo, ??pL1 = 0.2 + 1.2stat ?? 0.1BSR + 0.3theo in units of 10???4 fm3.
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