Measurement of the Dependence of the Deuteron Spin Structure Function and its Moments at Low with CLAS
Journal Article
·
· Physical Review Letters
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.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); George Washington Univ., Washington, DC (United States); Mississippi State Univ., Mississippi State, MS (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); US Jeffress Memorial Trust; United Kingdoms Science and Technology Facilities Council (STFC); Italian Istituto Nazionale di Fisica Nucleare; French Centre National de la Recherche Scienti que; National Research Foundation of Korea (NRF); Jeffress Memorial Trust; Science and Technologies Facilities Council (STFC-UK); Istituto Nazionale di Fisica Nucleare; Centre National de la Recherche Scientifique (CNRS)
- Contributing Organization:
- CLAS Collaboration
- Grant/Contract Number:
- AC05-06OR23177; SC0016583; FG02-07ER41528; AC02-06CH11357
- OSTI ID:
- 1420097
- Alternate ID(s):
- OSTI ID: 1419908; OSTI ID: 1439828; OSTI ID: 1483662
- Report Number(s):
- JLAB-PHY-17-2585; DOE/OR/-23177-4273; arXiv:1711.01974; PRLTAO; TRN: US1801454
- Journal Information:
- Physical Review Letters, Vol. 120, Issue 6; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 10 works
Citation information provided by
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