Heating triangle singularities in heavy ion collisions

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Abreu, Luciano M. and Llanes Estrada, Felipe José (2021) Heating triangle singularities in heavy ion collisions. European physical journal C, 81 (5). ISSN 1434-6044

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Official URL: http://dx.doi.org/10.1140/epjc/s10052-021-09216-3




Abstract

We predict that triangle singularities of hadron spectroscopy can be strongly affected in heavy ion collisions. To do it we examine various effects on the singularity-inducing triangle loop of finite temperature in the terminal hadron phase. It appears that peaks seen in central heavy ion collisions are more likely to be hadrons than rescattering effects under two conditions. First, the flight-time of the intermediate hadron state must be comparable to the lifetime of the equilibrated fireball (else, the reaction mostly happens in vacuo after freeze out). Second, the medium effect over the triangle-loop particle mass or width must be sizeable. When these (easily checked) conditions are met, the medium quickly reduces the singularity: at T about 150 MeV, even by two orders of magnitude, acting then as a spectroscopic filter.


Item Type:Article
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© The Author(s) 2021
Work supported by Brazilian funding agencies CNPq (contracts 308088/2017-4 and 400546/2016-7) and FAPESB (contract INT0007/2016); Spain's MINECO FPA2016-75654-C2-1-P, MICINN PID2019-108655GB-I00 and -106080GB-C21; EU's 824093 (STRONG-2020); and UCM's 910309 group grants and IPARCOS.

Uncontrolled Keywords:Finite; Temperature; Pion; Nucleons.
Subjects:Sciences > Physics
ID Code:67991
Deposited On:11 Oct 2021 16:17
Last Modified:13 Oct 2021 07:24

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