Collisional and thermal dissociation of J/ψ and ϒ states at the LHC

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–gluo...

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Vydáno v:	Physics letters. B Ročník 778; číslo C; s. 384 - 391
Hlavní autoři:	Aronson, Samuel, Borras, Evan, Odegard, Brunel, Sharma, Rishi, Vitev, Ivan
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Netherlands Elsevier B.V 01.03.2018 Elsevier
Témata:	ATOMIC AND MOLECULAR PHYSICS Atomic and Nuclear Physics
ISSN:	0370-2693, 1873-2445
On-line přístup:	Získat plný text
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Popis
Shrnutí:	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.
Bibliografie:	AC52-06NA25396; 2012LANL7033 LA-UR-18-20593 USDOE Office of Science (SC) USDOE Laboratory Directed Research and Development (LDRD) Program
ISSN:	0370-2693 1873-2445
DOI:	10.1016/j.physletb.2018.01.038