TY - JOUR
T1 - Hard nonlogarithmic corrections of order mα7 to hyperfine splitting in positronium
AU - Eides, Michael I.
AU - Shelyuto, Valery A.
PY - 2014/6/30
Y1 - 2014/6/30
N2 - We consider hard three-loop nonlogarithmic corrections of order mα7 to hyperfine splitting in positronium. All these contributions are generated by the graphs with photon and/or electron loop radiative insertions in the two-photon exchange diagrams. We calculate contributions of six gauge-invariant sets of diagrams. The total result for all these diagrams is ΔE=-1.2917(1)mα7/π3=-5.672kHz.
AB - We consider hard three-loop nonlogarithmic corrections of order mα7 to hyperfine splitting in positronium. All these contributions are generated by the graphs with photon and/or electron loop radiative insertions in the two-photon exchange diagrams. We calculate contributions of six gauge-invariant sets of diagrams. The total result for all these diagrams is ΔE=-1.2917(1)mα7/π3=-5.672kHz.
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U2 - 10.1103/PhysRevD.89.111301
DO - 10.1103/PhysRevD.89.111301
M3 - Article
AN - SCOPUS:84903649593
SN - 1550-7998
VL - 89
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 111301
ER -