2026-04-04T02:24:58Zhttps://recercat.cat/oai/request

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

Effect of continuum states on the double-heavy hadron spectra Tarrús Castellà, Jaume Effective field theories of QCD Properties of hadrons Quarkonium 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. 2026-04-03T00:35:16Z 2026-04-03T00:35:16Z 2026-04-03T00:35:16Z 2026-03-31T08:36:12Z 2026-03-31T08:36:12Z 2024 2026-03-31T08:36:12Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://hdl.handle.net/10230/72948 Journal of High Energy Physics. 2024 Jun 18;2024(6):107 This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Springer