Interference Study of the chi(c0)(1(3)P(0)) in the reaction (p)over-bar-p ->pi(0)pi(0)

Fermilab experiment E835 has observed (p) over barp annihilation production of the charmonium state chi(c0) and its subsequent decay into pi(0)pi(0). Although the resonant amplitude is an order of magnitude smaller than that of the nonresonant continuum production of pi(0)pi(0), an enhanced interference signal is evident. A partial wave expansion is used to extract physics parameters. The amplitudes J=0 and 2, of comparable strength, dominate the expansion. Both are accessed by L=1 in the entrance (p) over barp channel. The product of the input and output branching fractions is determined to be B((p) over barp-->chi(c0))xB(chi(c0)-->pi(0)pi(0))=(5.09+/-0.81+/-0.25)x10(-7).