Gluon content of theηandη′mesons and theηγ,η′γelectromagnetic transition form factors
نویسندگان
چکیده
منابع مشابه
Two-Loop Quark and Gluon Form Factors in Dimensional Regularisation
We compute the two-loop corrections to the massless quark form factor γ∗ → qq̄ and gluon form factor H → gg to all orders in the dimensional regularisation parameter ǫ = (4− d)/2. The two-loop contributions to the form factors are reduced to linear combinations of master integrals, which are computed in a closed form, expressed as Γ-functions and generalised hypergeometric functions of unit argu...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2004
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.70.054020