ALICE results on system-size dependence of charged-particle multiplicity density in p-Pb, Pb-Pb and Xe-Xe collisions

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초록

Particle production at LHC energies involves the interplay of hard (perturbative) and soft (non-perturbative) QCD processes. Global observables, such as the charged-particle multiplicity, are related to the initial geometry and the energy density produced in the collision. They are important to characterise relativistic heavy-ion collisions and to constrain model calculations. The LHC produced Xenon-Xenon collisions for the first time in October 2017. New results on the primary charged-particle pseudorapidity density, and its pseudorapidity and centrality dependence are presented for this lighter and deformed nucleus, and compared to measurements obtained for lead ions. New results will also be presented for p-Pb collisions at the highest energy of 8.16 TeV, as part of an overview of all the measurements at LHC Run 1 and 2 energies. These studies allow us to investigate the evolution of particle production with energy and system size and to compare models based on various particle production mechanisms and different initial conditions.

키워드

ALICELHCXe-XePb-Pbp-PbppCharged-particle multiplicity densitySystem-size dependence
제목
ALICE results on system-size dependence of charged-particle multiplicity density in p-Pb, Pb-Pb and Xe-Xe collisions
저자
Kim, BeomkyuAcharya, S.Acosta, F. T.Adamova, D.Adolfsson, J.Aggarwal, M. M.Rinella, G. AglieriAgnello, M.Agrawal, N.Ahammed, Z.Ahn, S. U.Aiola, S.Akindinov, A.Al-Turany, M.Alam, S. N.Albuquerque, D. S. D.Aleksandrov, D.Alessandro, B.Alfaro Molina, R.Ali, Y.Alici, A.Alkin, A.Alme, J.Alt, T.Altenkamper, L.Altsybeev, IAnaam, M. N.Andrei, C.Andreou, D.Andrews, H. A.Andronic, A.Angeletti, M.Anguelov, VAnson, C.Anticic, T.Antinori, F.Antonioli, P.Anwar, R.Apadula, N.Aphecetche, L.Appelshaeuser, H.Arcelli, S.Arnaldi, R.Arnold, O. W.Arratia, M.Arsene, I. C.Arslandok, M.Augustinus, A.Averbeck, R.Azmi, M. D.Badala, A.Baek, Y. W.Bagnasco, S.Bailhache, R.Bala, R.Baldisseri, A.Ball, M.Baral, R. C.Barbano, A. M.Barbera, R.Barile, F.Barioglio, L.Barnafoldi, G. G.Barnby, L. S.Barret, VBartalini, P.Barth, K.Bartsch, E.Bastid, N.Basu, S.Batigne, G.Batyunya, B.Batzing, P. C.Bazo Alba, J. L.Bearden, I. G.Beck, H.Bedda, C.Behera, N. K.Belikov, IBellini, F.Bello Martinez, H.Bellwied, R.Beltran, L. G. 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DOI
10.1016/j.nuclphysa.2018.09.060
발행일
2019-02
유형
Article; Proceedings Paper
저널명
Nuclear Physics A
982
페이지
279 ~ 282