TY - JOUR
T1 - Deuteron magnetic quadrupole moment from chiral effective field theory
AU - Liu, C. P.
AU - de Vries, J.
AU - Mereghetti, E.
AU - Timmermans, R. G.E.
AU - van Kolck, U.
N1 - Funding Information:
We thank G. Onderwater for helpful discussions. U.v.K. is grateful to KVI for hospitality. This research was supported by the ROC NSC under grant NSC98-2112-M-259-004-MY3 (C.P.L.), by the Dutch Stichting FOM under programs 104 and 114 (J.d.V., R.G.E.T.), and by the US DOE under contract DE-AC02-05CH11231 with the Director, Office of Science, Office of High Energy Physics (E.M.), and under grants DE-FG02-06ER41449 (E.M.) and DE-FG02-04ER41338 (E.M., U.v.K.).
PY - 2012/7/18
Y1 - 2012/7/18
N2 - We calculate the magnetic quadrupole moment (MQM) of the deuteron at leading order in the systematic expansion provided by chiral effective field theory. We take into account parity (P) and time-reversal (T) violation which, at the quark-gluon level, results from the QCD vacuum angle and dimension-six operators that originate from physics beyond the Standard Model. We show that the deuteron MQM can be expressed in terms of five low-energy constants that appear in the P- and T-violating nuclear potential and electromagnetic current, four of which also contribute to the electric dipole moments of light nuclei. We conclude that the deuteron MQM has an enhanced sensitivity to the QCD vacuum angle and that its measurement would be complementary to the proposed measurements of light-nuclear EDMs.
AB - We calculate the magnetic quadrupole moment (MQM) of the deuteron at leading order in the systematic expansion provided by chiral effective field theory. We take into account parity (P) and time-reversal (T) violation which, at the quark-gluon level, results from the QCD vacuum angle and dimension-six operators that originate from physics beyond the Standard Model. We show that the deuteron MQM can be expressed in terms of five low-energy constants that appear in the P- and T-violating nuclear potential and electromagnetic current, four of which also contribute to the electric dipole moments of light nuclei. We conclude that the deuteron MQM has an enhanced sensitivity to the QCD vacuum angle and that its measurement would be complementary to the proposed measurements of light-nuclear EDMs.
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U2 - 10.1016/j.physletb.2012.06.024
DO - 10.1016/j.physletb.2012.06.024
M3 - Article
AN - SCOPUS:84863498627
SN - 0370-2693
VL - 713
SP - 447
EP - 452
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 4-5
ER -