eta' multiplicity and Witten-Veneziano relation at T>0
| Autor: | Klabučar, D., Benić, S., Horvatić, D., Kekez, D. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Acta Phys.Polon.Supp. 6 (2013) 3, 935 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.5506/APhysPolBSupp.6.935 |
| Popis: | Recent RHIC results on eta' multiplicity in heavy-ion collisions are of great importance because they clearly signal a partial restoration of U_A(1) symmetry at high temperatures T, and thus provide an unambiguous signature of the formation of a new state of matter. Prompted by these experimental results of STAR and PHENIX collaborations, we discuss and propose the minimal generalization of the Witten-Veneziano relation to finite T. Comment: appolb.sty, 6 pages, no figures. arXiv admin note: substantial text overlap with arXiv:1105.0356 |
| Databáze: | arXiv |
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