Anisotropic excited bottomonia from a basis of smeared operators
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arXiv
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| Autores principales: | , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
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| _version_ | 1866912221277192192 |
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| author | Bignell, Ryan Aarts, Gert Allton, Chris Anwar, M. Naeem Burns, Timothy J. D'arcy, Rachel Horohan Jäger, Benjamin Kim, Seyong Lombardo, Maria Paola Ryan, Sinéad Skullerud, Jon-Ivar Smecca, Antonio |
| author_facet | Bignell, Ryan Aarts, Gert Allton, Chris Anwar, M. Naeem Burns, Timothy J. D'arcy, Rachel Horohan Jäger, Benjamin Kim, Seyong Lombardo, Maria Paola Ryan, Sinéad Skullerud, Jon-Ivar Smecca, Antonio |
| contents | Bottomonia play a crucial role in our understanding of the quark gluon plasma. We present lattice non-relativistic QCD calculations of bottomonia at temperatures in the range $T \in [47, 380]$ MeV using the Fastsum Generation 2L anisotropic $N_f = 2 + 1$ ensembles. The use of a basis of smeared operators allows the extraction of excited-state masses at zero temperature and an investigation of their thermal properties at non-zero temperature. We find that the ground state signal is substantially improved by this variational approach at finite temperature. We also apply the time-derivative moments approach to the projected or optimal correlation functions at finite temperature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03185 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anisotropic excited bottomonia from a basis of smeared operators Bignell, Ryan Aarts, Gert Allton, Chris Anwar, M. Naeem Burns, Timothy J. D'arcy, Rachel Horohan Jäger, Benjamin Kim, Seyong Lombardo, Maria Paola Ryan, Sinéad Skullerud, Jon-Ivar Smecca, Antonio High Energy Physics - Lattice Bottomonia play a crucial role in our understanding of the quark gluon plasma. We present lattice non-relativistic QCD calculations of bottomonia at temperatures in the range $T \in [47, 380]$ MeV using the Fastsum Generation 2L anisotropic $N_f = 2 + 1$ ensembles. The use of a basis of smeared operators allows the extraction of excited-state masses at zero temperature and an investigation of their thermal properties at non-zero temperature. We find that the ground state signal is substantially improved by this variational approach at finite temperature. We also apply the time-derivative moments approach to the projected or optimal correlation functions at finite temperature. |
| title | Anisotropic excited bottomonia from a basis of smeared operators |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2502.03185 |