TY  - JOUR
AU  - Bruschini, R.
AU  - Gonzalez, P.
PY  - 2021
DA  - 2021//
TI  - Strong decays of the lowest bottomonium hybrid within an extended Born-Oppenheimer framework
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 74
EP  - 9pp
VL  - 81
IS  - 1
PB  - Springer
AB  - 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).
SN  - 1434-6044
UR  - https://arxiv.org/abs/1912.07337
UR  - https://doi.org/10.1140/epjc/s10052-021-08872-9
DO  - 10.1140/epjc/s10052-021-08872-9
LA  - English
N1  - WOS:000612840500001
ID  - Bruschini+Gonzalez2021
ER  -