| Full text | |
| Author(s): |
Abreu, L. M.
;
Navarra, F. S.
;
Nielsen, M.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW C; v. 101, n. 1, p. 12-pg., 2020-01-09. |
| Abstract | |
In this work, we study the interactions of bottom mesons which lead to Upsilon production and absorption in hot hadronic matter. We use effective Lagrangians to calculate the Upsilon production cross section in processes such as (B) over bar(*) B (*) -> Upsilon + (pi, rho) and also the Upsilon absorption cross section in the corresponding inverse processes. We update and extend previous calculations by Lin and Ko, introducing anomalous interactions. The obtained cross sections are used as input to solve the rate equation which allows us to follow the time evolution of the Upsilon multiplicity. In contrast to previous conjectures, our results suggest that the interactions in the hadron gas phase reduce the Upsilon abundance. (AU) | |
| FAPESP's process: | 17/07278-5 - Exotic states from an effective hadron dynamics from superconformal algebra |
| Grantee: | Marina Nielsen |
| Support Opportunities: | Scholarships abroad - Research |