Вимірювання продукування кварконія за допомогою детектора ALICE на LHC

Автор(и)

  • F. Fionda Department of Physics and Technology, University of Bergen

DOI:

https://doi.org/10.15407/ujpe64.7.566

Ключові слова:

QGP, quarkonium, relativistic heavy-ion collisions, cold nuclear matter effects

Анотація

In (ultra-)relativistic heavy-ion collisions, the strongly interacting
matter is predicted to undergo a phase transition into a plasma of deconfined
quarks and gluons (QGP) and quarkonia probe different aspects of this medium.
However, the medium modification of quarkonium production includes also the contribution of cold nuclear matter effects (CNM), such as shadowing or nuclear break-up in addition to QGP effects. Proton--nucleus collisions, where no QGP is expected, are used to measure cold nuclear matter effects on quarkonium production. Vacuum production of quarkonia is modelled in proton--proton (pp) collisions, which are used as reference for both heavy-ion and proton--nucleus collisions. Besides serving as reference, results in pp collisions represent a benchmark test of QCD based models in both perturbative and non-perturbative regimes. The ALICE detector has unique capabilities at the LHC for measuring quarkonia down to zero transverse momentum. Measurements are carried out at both central and forward rapidity, in the dielectron and dimuon decay channel, respectively. In this contribution
the latest quarkonium measurements for various energies and colliding systems, performed by the ALICE Collaboration during the LHC Run-2 period, will be discussed.

Посилання

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Опубліковано

2019-09-17

Як цитувати

Fionda, F. (2019). Вимірювання продукування кварконія за допомогою детектора ALICE на LHC. Український фізичний журнал, 64(7), 566. https://doi.org/10.15407/ujpe64.7.566

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