%0 Journal Article
%T Strong decays of the lowest bottomonium hybrid within an extended Born-Oppenheimer framework
%A Bruschini, R.
%A Gonzalez, P.
%J European Physical Journal C
%D 2021
%V 81
%N 1
%I Springer
%@ 1434-6044
%G English
%F Bruschini+Gonzalez2021
%O WOS:000612840500001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4695), last updated on Tue, 16 Feb 2021 09:51:47 +0000
%X We analyze the decays of the theoretically predicted lowest bottomonium hybrid H(1P) to open bottom two-meson states. We do it by embedding a quark pair creation model into the Born-Oppenheimer framework which allows for a unified, QCD-motivated description of bottomonium hybrids as well as bottomonium. A new 1P1 decay model for H(1P) comes out. The same analysis applied to bottomonium leads naturally to the well-known 3 P0 decay model. We show that H(1P) and the theoretically predicted bottomonium state Upsilon (5S), whose calculated masses are close to each other, have very different widths for such decays. A comparison with data from Upsilon (10860), an experimental resonance whose mass is similar to that of Upsilon (5S) and H(1P), is carried out. Neither a Upsilon (5S) nor a H(1P) assignment can explain the measured decay widths. However, a Upsilon (5S)-H(1P) mixing may give account of them supporting previous analyses of dipion decays of Upsilon (10860) and suggesting a possible experimental evidence of H(1P).
%R 10.1140/epjc/s10052-021-08872-9
%U https://arxiv.org/abs/1912.07337
%U https://doi.org/10.1140/epjc/s10052-021-08872-9
%P 74-9pp