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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2017
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/1705.06176 |
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| _version_ | 1866910928483647488 |
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| author | Lin, Yong-Hui Wilbring, Erik Fu, Hai-Long Hammer, Hans-Werner Meißner, Ulf-G. |
| author_facet | Lin, Yong-Hui Wilbring, Erik Fu, Hai-Long Hammer, Hans-Werner Meißner, Ulf-G. |
| contents | The charged exotic mesons Z_b(10610) and Z'_b(10650) observed by the Belle collaboration in 2011 are very close to the B* Bbar and B* Bbar* thresholds, respectively. This suggests their interpretation as shallow hadronic molecules of B and B* mesons. Using the masses of the Z_b(10610) and Z'_b(10650) as input, we rule out the possibility for universal bound states of three B and B* mesons arising from the Efimov effect based on their spin-isospin structure. As a consequence, we can predict the phase shifts for the scattering of B and B* mesons off the exotic mesons Z_b(10610) and Z'_b(10650) to leading order in a non-relativistic effective field theory with contact interactions based on two-body information alone. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1705_06176 |
| institution | arXiv |
| publishDate | 2017 |
| record_format | arxiv |
| spellingShingle | Three-body universality in the B meson sector Lin, Yong-Hui Wilbring, Erik Fu, Hai-Long Hammer, Hans-Werner Meißner, Ulf-G. High Energy Physics - Phenomenology Quantum Gases The charged exotic mesons Z_b(10610) and Z'_b(10650) observed by the Belle collaboration in 2011 are very close to the B* Bbar and B* Bbar* thresholds, respectively. This suggests their interpretation as shallow hadronic molecules of B and B* mesons. Using the masses of the Z_b(10610) and Z'_b(10650) as input, we rule out the possibility for universal bound states of three B and B* mesons arising from the Efimov effect based on their spin-isospin structure. As a consequence, we can predict the phase shifts for the scattering of B and B* mesons off the exotic mesons Z_b(10610) and Z'_b(10650) to leading order in a non-relativistic effective field theory with contact interactions based on two-body information alone. |
| title | Three-body universality in the B meson sector |
| topic | High Energy Physics - Phenomenology Quantum Gases |
| url | https://arxiv.org/abs/1705.06176 |