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Rybicki, Krzysztof Ulaczyk, Kyu-Ha Hwang, Marcin Wrona, Mariusz Gromadzki, Martin Donachie, Michael D. Albrow, Michal K. Szyma\\'nski, Naoki Koshimoto, Nicholas J. Rattenbury, Patryk Iwanek, Paul J. Tristram, Pawel Pietrukowicz, Przemek Mr\\'oz, Radek Poleski, Richard Barry, Richard W. Pogge, Rintaro Kirikawa, Sang-Mok Cha, Seung-Lee Kim, Shota Miyazaki, Sun-Ju Chung, Szymon Koz{\\l}owski, Tsubasa Yamawaki, Weicheng Zang, Yasushi Muraki, Yongseok Lee, Yoon-Hyun Ryu, Yoshitaka Itow, Yossi Shvartzvald, Youn Kil Jung, Yuki Hirao, Yuki Satoh, Yun Hak Kim, Yutaka Matsubara, Yuzuru Tanaka","submitted_at":"2021-01-25T23:04:28Z","abstract_excerpt":"We show that the perturbation at the peak of the light curve of microlensing event KMT-2019-BLG-0371 is explained by a model with a mass ratio between the host star and planet of $q \\sim 0.08$. Due to the short event duration ($t_{\\rm E} \\sim 6.5\\ $ days), the secondary object in this system could potentially be a massive giant planet. 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