2026-04-13T01:43:43Zhttps://recercat.cat/oai/request

oai:recercat.cat:10230/729482026-04-03T00:35:16Zcom_2072_6col_2072_452952

00925njm 22002777a 4500 dc Tarrús Castellà, Jaume author 2026-03-31T08:36:12Z 2026-03-31T08:36:12Z 2024 2026-03-31T08:36:12Z We present the leading order coupling of double-heavy hadrons to heavy hadron pairs in Born-Oppenheimer effective field theory. We obtain the expressions for the contribution of heavy hadron pairs to the masses and widths of double-heavy hadrons. We apply our result for the specific case of the coupling of the lowest lying heavy hybrids and D(∗)(s)D¯(∗)(s)(B(∗)(s)B¯(∗)(s)) obtaining a set of selection rules for the decays. We build a model for the coupling potential and compute the corresponding decay widths and the contributions to the mass of the heavy hybrids. We compare our results with the experimental exotic quarkonium spectrum and discuss the most likely experimental candidates for quarkonium hybrids. https://hdl.handle.net/10230/72948 Effective field theories of QCD Properties of hadrons Quarkonium Effect of continuum states on the double-heavy hadron spectra