期刊
PHYSICAL REVIEW LETTERS
卷 120, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.062501
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资金
- U.S. Department of Energy (DOE)
- U.S. National Science Foundation
- U.S. Jeffress Memorial Trust
- Physics and Astronomy Department at Mississippi State University
- Office of Research and Economic Development at Mississippi State University
- United Kingdom Science and Technology Facilities Council (STFC)
- Italian Istituto Nazionale di Fisica Nucleare
- French Institut National de Physique Nucleaire et de Physique des Particules
- French Centre National de la Recherche Scientifique
- National Research Foundation of Korea
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC05-06OR23177]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1505615] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1506172] Funding Source: National Science Foundation
- STFC [ST/J000175/1, ST/P004458/1, ST/L005719/1] Funding Source: UKRI
We measured the g(1) spin structure function of the deuteron at low Q(2), where QCD can be approximated with chiral perturbation theory (chi PT). The data cover the resonance region, up to an invariant mass of W approximate to 1.9 GeV. The generalized Gerasimov-Drell-Hearn sum, the moment Gamma(d)(1) and the spin polarizability gamma(d)(0) are precisely determined down to a minimum Q(2) of 0.02 GeV2 for the first time, about 2.5 times lower than that of previous data. We compare them to several chi PT calculations and models. These results are the first in a program of benchmark measurements of polarization observables in the chi PT domain.
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