We consider the problem of obtaining higher order in regularization parameter epsilon analytical results for master integrals with elliptics. The two commonly employed methods are provided by the use of differential equations and direct integration of parametric representations in terms of iterated integrals. Taking non-planar elliptic vertex as an example we show that in addition to two mentioned methods one can use analytical solution of differential equations in terms of power series. Moreover, in the last case it is possible to obtain the exact in epsilon results.
机构:
Chinese Univ Hong Kong, Dept Mech & Automat Engn, Room 617,Ho Sin Hang Eng Bldg, Shatin, New Territories, Peoples R ChinaChinese Univ Hong Kong, Dept Mech & Automat Engn, Room 617,Ho Sin Hang Eng Bldg, Shatin, New Territories, Peoples R China
Li, WJ
Mai, JD
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机构:Chinese Univ Hong Kong, Dept Mech & Automat Engn, Room 617,Ho Sin Hang Eng Bldg, Shatin, New Territories, Peoples R China
Mai, JD
Ho, CM
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h-index: 0
机构:Chinese Univ Hong Kong, Dept Mech & Automat Engn, Room 617,Ho Sin Hang Eng Bldg, Shatin, New Territories, Peoples R China