Collisional and thermal dissociation of / and ϒ states at the LHC
| Autor: | Evan Borras, Samuel Aronson, Ivan Vitev, Rishi Sharma, Brunel Odegard |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Large Hadron Collider 010308 nuclear & particles physics High Energy Physics::Lattice High Energy Physics::Phenomenology Plasma Quarkonium 01 natural sciences Dissociation (chemistry) lcsh:QC1-999 Nuclear physics Excited state 0103 physical sciences Quark–gluon plasma Thermal High Energy Physics::Experiment 010306 general physics Wave function Nuclear Experiment lcsh:Physics |
| Zdroj: | Physics Letters Physics Letters B, Vol 778, Iss C, Pp 384-391 (2018) |
| Popis: | We present new results for the suppression of high transverse momentum charmonium [J/ψ,ψ(2S)] and bottomonium [ϒ(1S),ϒ(2S),ϒ(3S)] states in Pb+Pb collisions at the Large Hadron Collider. Our theoretical formalism combines the collisional dissociation of quarkonia, as they propagate in the quark–gluon plasma, with the thermal wavefunction effects due to the screening of the QQ¯ attractive potential in the medium. We find that a good description of the relative suppression of the ground and higher excited quarkonium states, transverse momentum and centrality distributions is achieved, when comparison to measurements at a center-of-mass energy of 2.76 TeV is performed. Theoretical predictions for the highest Pb+Pb center-of-mass energy of 5.02 TeV at the LHC, where new experimental results are being finalized, are also presented. |
| Databáze: | OpenAIRE |
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