Name: Robert Schoefbeck Date: 11/09/05-03:30:28 PM Z
I should add that I have found a more severe case:
TFI[d, M1^2, {0, 0, 0, 0, 1}, {{2, 0}, {1, M2}, {1, M1}, {0, 0}, {1, M2}}]
gives
-((-2 + d)^2*(M1 - M2)*(M1 + M2)*TAI[d, 0, {{1,
M1}}]*TAI[d, 0, {{1, M2}}])/(8*(-4 + d)*(-8 +
3*d)*M1^2*M2^2) -
((-2 + d)*TAI[d, 0, {{1, M2}}]^2)/(8*(-8 + 3*d)*M2^2) +
((-7*M1^2 + 2*d*M1^2 + 3*M2^2 - d*M2^2)*TJI[d, M1^2, {{2,
M1}, {1, M2}, {1, M2}}])/(2*(-4 + d)*(-8 + 3*d)) +
((-7*M1^2 + 2*d*M1^2 + 3*M2^2 - d*M2^2)*TJI[d, M1^2, {{2,
M2}, {1, M2}, {1, M1}}])/(2*(-4 + d)*(-8 + 3*d)) -
(2*(M1 - M2)*M2^2*(M1 + M2)*TJI[d, M1^2, {{2, M2}, {2, M1}, {1,
M2}}])/((-4 + d)*(-8 + 3*d)) +
(M2^2*(-M1 + M2)*(M1 + M2)*TJI[d, M1^2, {{2, M2}, {2, M2}, {1,
M1}}])/((-4 + d)*(-8 + 3*d)) +
(2*M2^2*(-M1 + M2)*(M1 + M2)*TJI[d, M1^2, {{3, M2}, {1, M2},
{1, M1}}])/((-4 + d)*(-8 + 3*d))
with many 1/(d-4)’s
and
TFI[d, s, {0, 0, 0, 0, 1}, {{2, 0}, {1, M2}, {1, M1}, {0, 0}, {1, M2}}]
gives
-((-2 + d)^2*TAI[d, 0, {{1, M2}}]^2)/(4*(-3 + d)*M2^2*(M1^2
with nontrivial s->M1^2 limit.
I’m stuck at this stage and would be keen to know if there is a way
around this.
Cheers
Robert schoefbeck