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13 papers · 2 filters
Probing the nature of and in the isospin violating process
Xiao-Gang Wu, Christoph Hanhart, Qian Wang +1
The isospin violation process is studied assuming that is a hadronic molecule. In association with the production of the $Z_c…
B_l4 decays and the extraction of |V_ub|
Xian-Wei Kang, Bastian Kubis, Christoph Hanhart +1
The Cabibbo-Kobayashi-Maskawa matrix element |V_ub| is not well determined yet. It can be extracted from both inclusive or exclusive decays, like B --> pi (rho) l nu-bar_l. However…
Modelling low-mass resonances in multi-body decays
C. Hanhart
Recent advances towards a model-independent description of hadronic few-body final states, relevant for the extraction of direct CP violation from the decays of heavy mesons, are p…
Meson loop singularity, exotic states' productions and decays near threshold
Qian Wang, Christoph Hanhart, Qiang Zhao
We investigate in detail the "triangle singularity" regions of meson loops where the corresponding intermediate mesons are nearly-on-shell and have relatively small momenta, and th…
Supernova Constraints on MeV Dark Sectors from e+ e- Annihilations
Herbert K. Dreiner, Jean-François Fortin, Christoph Hanhart +1
Theories with dark forces and dark sectors are of interest for dark matter models. In this paper we find the region in parameter space that is constrained by supernova cooling cons…
as the first -wave open charm vector molecular state?
Martin Cleven, Qian Wang, Feng-Kun Guo +3
Since its first observation in 2005, the vector charmonium has turned out to be one of the prime candidates for an exotic state in the charmonium spectrum. It was recentl…