Abstract
We have examined the role of proton-neutron pairing on the Quasiparticle Random Phase Approximation (QRPA) by calculating neutrinoless double beta decay matrix elements using the recently proposed full-QRPA, which includes proton-neutron pairing. With this full-QRPA we have performed calculations on the neutrinoless double beta decay matrix elements of the experimentally interesting nuclei A=48, 76, 82, 96, 100, 116, 128, 130 and 136. Using the best presently available experimental limits on the half-time of neutrinoless double beta decay we have extracted new limits on the lepton number violating parameters. We have found that the inclusion of proton-neutron pairing makes the limits on the lepton number non-conserving parameters less stringent.
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