ALMA observations of the nearby AGB star L2 Puppis - I. Mass of the central star and detection of a candidate planetP. Kervella, W. Homan, A. M. S. Richards, L. Decin, I. McDonald, M. Montargès and K. OhnakaA&A, 596 (2016) A92DOI: https://doi.org/10.1051/0004-6361/201629877