Speaker
Dr
Xiu-Lei Ren
(Ruhr-Universität Bochum)
Description
We report a robust prediction of heavy $K^\ast$ meson, which can be viewed as the excited Kaon state with hidden charm, through a study of the three-body system $KD\bar{D}^\ast$ using the fixed-center approximation to the Feddeev equations [1]. The two-body interactions are stringently constrained by the experimental as well as theoretical investigations. Concrete coupled channel three-body calculations yield the heavy $K^\ast$ meson, $4307\pm2−i9\pm2$ MeV, with $I(J^P)=1/2(1^−)$. With the motivation to investigate the properties of $K^\ast(4307)$, which can be observed in experiments, we further perform a study of the decay processes of $K^\ast(4307)$ to two-body and three-body channels [2]. We hope that our findings could inspire the experimental community to investigate this exotic $K^\ast$ meson and to study the so far unexplored heavy strange physics, help improve our understanding of nonperturbative strong interactions.
[1].Xiu-Lei Ren, Brenda B. Malabarba, Li-Sheng Geng, K.-P. Khemchandani and A.-Martínez Torres, Phys. Lett. B 785, 112 (2018), arXiv:1805.08330 [hep-ph].
[2].Xiu-Lei Ren, Brenda B. Malabarba, K.P. Khemchandani, A. Martínez Torres, JHEP 1905, 103 (2019), arXiv:1904.06768 [hep-ph]
Primary author
Dr
Xiu-Lei Ren
(Ruhr-Universität Bochum)
Co-authors
Dr
ALBERTO MARTINEZ TORRES
(IF-UNIVERSIDADE DE SAO PAULO)
Ms
Brenda B. Malabarba
(Universidade de Sao Paulo)
Dr
Kanchan Khemchandani
(IF-USP)
Dr
Lisheng Geng
(Beihang University)
