TY - JOUR
T1 - Measurement of the Q 2 Dependence of the Deuteron Spin Structure Function g 1 and its Moments at Low Q 2 with CLAS
AU - Adhikari, K. P.
AU - Biselli, Angela
PY - 2018/1/1
Y1 - 2018/1/1
N2 - We measured the g1 spin structure function of the deuteron at low Q2, where QCD can be approximated with chiral perturbation theory (χPT). The data cover the resonance region, up to an invariant mass of W≈1.9 GeV. The generalized Gerasimov-Drell-Hearn sum, the moment Γd1 and the spin polarizability γd0 are precisely determined down to a minimum Q2 of 0.02 GeV2 for the first time, about 2.5 times lower than that of previous data. We compare them to several χPT calculations and models. These results are the first in a program of benchmark measurements of polarization observables in the χPT domain.
AB - We measured the g1 spin structure function of the deuteron at low Q2, where QCD can be approximated with chiral perturbation theory (χPT). The data cover the resonance region, up to an invariant mass of W≈1.9 GeV. The generalized Gerasimov-Drell-Hearn sum, the moment Γd1 and the spin polarizability γd0 are precisely determined down to a minimum Q2 of 0.02 GeV2 for the first time, about 2.5 times lower than that of previous data. We compare them to several χPT calculations and models. These results are the first in a program of benchmark measurements of polarization observables in the χPT domain.
UR - https://digitalcommons.fairfield.edu/physics-facultypubs/164
UR - https://libraryapps.fairfield.edu/openurl?institution=01FUNI_INST&vid=01FUNI_INST:MAIN&sid=google&auinit=KP&aulast=Adhikari&atitle=Measurement%20of%20the%20Q%202%20Dependence%20of%20the%20Deuteron%20Spin%20Structure%20Function%20g%201%20and%20its%20Moments%20at%20Low%20Q%202%20with%20CLAS&id=doi:10.1103%2FPhysRevLett.120.062501&title=Physical%20review%20letters%20online&volume=120&issue=6&date=2018&spage=062501&issn=0031-9007
U2 - 10.1103/PhysRevLett.120.062501
DO - 10.1103/PhysRevLett.120.062501
M3 - Article
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
ER -