$$Z_b(10610)$$ Zb(10610) in a hadronic medium
Abstract In this work we investigate the $$Z_b (10610)$$ Zb(10610) (called simply $$Z_b$$ Zb ) abundance in the hot hadron gas produced in heavy ion collisions after the quark–gluon plasma phase. We use effective Lagrangians to calculate the thermally averaged cross sections of $$Z_b $$ Zb productio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-09-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-6182-5 |
| _version_ | 1819144486625738752 |
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| author | L. M. Abreu F. S. Navarra M. Nielsen A. L. Vasconcellos |
| author_facet | L. M. Abreu F. S. Navarra M. Nielsen A. L. Vasconcellos |
| author_sort | L. M. Abreu |
| collection | DOAJ |
| description | Abstract In this work we investigate the $$Z_b (10610)$$ Zb(10610) (called simply $$Z_b$$ Zb ) abundance in the hot hadron gas produced in heavy ion collisions after the quark–gluon plasma phase. We use effective Lagrangians to calculate the thermally averaged cross sections of $$Z_b $$ Zb production in processes such as $$B^{(*)} + \bar{B}^{(*)} \rightarrow \pi + Z_b (10610)$$ B(∗)+B¯(∗)→π+Zb(10610) and also of its absorption in the corresponding inverse processes. We then solve the rate equation to follow the time evolution of the $$Z_b$$ Zb multiplicity. We find that, if we neglect the $$Z_b$$ Zb decay, the number of $$Z_b$$ Zb ’s produced at the end of the quark–gluon plasma phase remains almost constant during the hadron phase. The introduction of the decay in the rate equation leads to a suppression in the final yield by a factor two. |
| first_indexed | 2024-12-22T12:42:54Z |
| format | Article |
| id | doaj.art-774557c0b99042b3b896fc14289d18c1 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-12-22T12:42:54Z |
| publishDate | 2018-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-774557c0b99042b3b896fc14289d18c12022-12-21T18:25:24ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522018-09-017891810.1140/epjc/s10052-018-6182-5$$Z_b(10610)$$ Zb(10610) in a hadronic mediumL. M. Abreu0F. S. Navarra1M. Nielsen2A. L. Vasconcellos3Instituto de Física, Universidade Federal da BahiaInstituto de Física, Universidade de São PauloInstituto de Física, Universidade de São PauloInstituto de Física, Universidade Federal da BahiaAbstract In this work we investigate the $$Z_b (10610)$$ Zb(10610) (called simply $$Z_b$$ Zb ) abundance in the hot hadron gas produced in heavy ion collisions after the quark–gluon plasma phase. We use effective Lagrangians to calculate the thermally averaged cross sections of $$Z_b $$ Zb production in processes such as $$B^{(*)} + \bar{B}^{(*)} \rightarrow \pi + Z_b (10610)$$ B(∗)+B¯(∗)→π+Zb(10610) and also of its absorption in the corresponding inverse processes. We then solve the rate equation to follow the time evolution of the $$Z_b$$ Zb multiplicity. We find that, if we neglect the $$Z_b$$ Zb decay, the number of $$Z_b$$ Zb ’s produced at the end of the quark–gluon plasma phase remains almost constant during the hadron phase. The introduction of the decay in the rate equation leads to a suppression in the final yield by a factor two.http://link.springer.com/article/10.1140/epjc/s10052-018-6182-5 |
| spellingShingle | L. M. Abreu F. S. Navarra M. Nielsen A. L. Vasconcellos $$Z_b(10610)$$ Zb(10610) in a hadronic medium European Physical Journal C: Particles and Fields |
| title | $$Z_b(10610)$$ Zb(10610) in a hadronic medium |
| title_full | $$Z_b(10610)$$ Zb(10610) in a hadronic medium |
| title_fullStr | $$Z_b(10610)$$ Zb(10610) in a hadronic medium |
| title_full_unstemmed | $$Z_b(10610)$$ Zb(10610) in a hadronic medium |
| title_short | $$Z_b(10610)$$ Zb(10610) in a hadronic medium |
| title_sort | z b 10610 zb 10610 in a hadronic medium |
| url | http://link.springer.com/article/10.1140/epjc/s10052-018-6182-5 |
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