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Centrality dependence of the charged-particle multiplicity density at midrapidity in Pb-Pb collisions at sqrt(sNN) = 5.02 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 2 декабря 2016 г.
- Авторы: Malinina L., ALICE C.
- Журнал: Physical Review Letters
- Том: 116
- Номер: 22
- Год издания: 2016
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 222302
- DOI: 10.1103/PhysRevLett.116.222302
- Аннотация: The pseudorapidity density of charged particles, dNch/dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sNN=5.02 TeV. For the 5% most central collisions, we measure a value of 1943±54. The rise in dNch/dη as a function of sNN is steeper than that observed in proton-proton collisions and follows the trend established by measurements at lower energy. The increase of dNch/dη as a function of the average number of participant nucleons, ⟨Npart⟩, calculated in a Glauber model, is compared with the previous measurement at sNN=2.76 TeV. A constant factor of about 1.2 describes the increase in dNch/dη from sNN=2.76 to 5.02 TeV for all centrality classes, within the measured range of 0%–80% centrality. The results are also compared to models based on different mechanisms for particle production in nuclear collisions.
- Добавил в систему: Малинина Людмила Владимировна