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The function A0[M1^2] depends on D implicitly. Also it depends on regulator

mass (mass scale) \mu^2. If you need i can find and write out exact formula,

but this formula one can find in any reference book concerning

Passrino-Veltman integral functions.

----- Original Message -----

From: "Mr M." <noreply@feyncalc.org>

To: <feyncalc@feyncalc.org>

Sent: Friday, January 16, 2009 4:11 PM

Subject: SetOptions[OneLoop, Dimension -> D]

*> Hi, I am using FC-6.00 with Mathematica-6.03 and run into problem of not
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*> being able to perform OneLoop integration for some arbitrary dimension D.
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*> Here one example calc.
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*> IN->
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*> SetOptions[OneLoop, Dimension -> D];
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*> TEST = OneLoop[k,
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*> I*FourVector[k, \[Mu], Dimension -> D]*
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*> FourVector[k, \[Nu], Dimension -> D]*FAD[{k, M1}]] // InputForm
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*> OUT->
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*> -(M1^2*Pi^2*(M1^2 + 2*A0[M1^2])*Pair[LorentzIndex[\[Mu]],
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*> LorentzIndex[\[Nu]]])/8
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*> I want to obtain the result being dependent of D, to cancel it later
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*> manually. Am I missing something?
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*>
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*> Thanks.
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*>
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