Econometric analysis of mergers from a company's point of view
A good textbook for this sort of empirical research is Introductory Econometrics for Finance by Chris Brooks. That textbook helped me a lot when I was writing my thesis, which was actually on M&amp;A (if they improve financial ratios for firms). I know writing a thesis is not exactly the same as actual research but reading your question I think you could find it useful.