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We consider the distribution of conductance fluctuations in disorderedquantum dots with single channel leads. Using a perturbative diagrammaticapproach, valid for continuous level spectra, we describe dephasing due toprocesses within the dot by considering two different contributions to thelevel broadening, thus satisfying particle number conservation. Instead of acompletely non-Gaussian distribution, which occurs for zero dephasing, we findfor strong dephasing that the distribution is mainly Gaussian withnon-universal variance and non-Gaussian tails.Comment: 11 pages in REVTeX two-column format; 6 eps figures included;  submitted to Phys. Rev.

Effect of dephasing on mesoscopic conductance fluctuations in quantum dots with single-channel leads