- Main
Measurement of the azimuthal anisotropy of charged-particle production in Xe+Xe collisions at sNN =5.44 TeV with the ATLAS detector
- Author(s): Aad, G;
- Abbott, B;
- Abbott, DC;
- Abed Abud, A;
- Abeling, K;
- Abhayasinghe, DK;
- Abidi, SH;
- Abouzeid, OS;
- Abraham, NL;
- Abramowicz, H;
- Abreu, H;
- Abulaiti, Y;
- Acharya, BS;
- Achkar, B;
- Adachi, S;
- Adam, L;
- Adam Bourdarios, C;
- Adamczyk, L;
- Adamek, L;
- Adelman, J;
- Adersberger, M;
- Adiguzel, A;
- Adorni, S;
- Adye, T;
- Affolder, AA;
- Afik, Y;
- Agapopoulou, C;
- Agaras, MN;
- Aggarwal, A;
- Agheorghiesei, C;
- Aguilar-Saavedra, JA;
- Ahmadov, F;
- Ahmed, WS;
- Ai, X;
- Aielli, G;
- Akatsuka, S;
- Åkesson, TPA;
- Akilli, E;
- Akimov, AV;
- Al Khoury, K;
- Alberghi, GL;
- Albert, J;
- Alconada Verzini, MJ;
- Alderweireldt, S;
- Aleksa, M;
- Aleksandrov, IN;
- Alexa, C;
- Alexopoulos, T;
- Alfonsi, A;
- Alfonsi, F;
- Alhroob, M;
- Ali, B;
- Aliev, M;
- Alimonti, G;
- Allaire, C;
- Allbrooke, BMM;
- Allen, BW;
- Allport, PP;
- Aloisio, A;
- Alonso, F;
- Alpigiani, C;
- Alshehri, AA;
- Alvarez Estevez, M;
- Alviggi, MG;
- Amaral Coutinho, Y;
- Ambler, A;
- Ambroz, L;
- Amelung, C;
- Amidei, D;
- Amor Dos Santos, SP;
- Amoroso, S;
- Amrouche, CS;
- An, F;
- Anastopoulos, C;
- Andari, N;
- Andeen, T;
- Anders, CF;
- Anders, JK;
- Andreazza, A;
- Andrei, V;
- Anelli, CR;
- Angelidakis, S;
- Angerami, A;
- Anisenkov, AV;
- Annovi, A;
- Antel, C;
- Anthony, MT;
- Antipov, E;
- Antonelli, M;
- Antrim, DJA;
- Anulli, F;
- Aoki, M;
- Aparisi Pozo, JA;
- Aperio Bella, L;
- Araque, JP;
- Araujo Ferraz, V;
- Araujo Pereira, R;
- Arcangeletti, C;
- Arce, ATH;
- Arduh, FA
- et al.
Published Web Location
https://doi.org/10.1103/PhysRevC.101.024906Abstract
This paper describes the measurements of flow harmonics v2-v6 in 3μb-1 of Xe+Xe collisions at sNN=5.44 TeV performed using the ATLAS detector at the Large Hadron Collider (LHC). Measurements of the centrality, multiplicity, and pT dependence of the vn obtained using two-particle correlations and the scalar product technique are presented. The measurements are also performed using a template-fit procedure, which was developed to remove nonflow correlations in small collision systems. This nonflow removal is shown to have a significant influence on the measured vn at high pT, especially in peripheral events. Comparisons of the measured vn with measurements in Pb+Pb collisions and p+Pb collisions at sNN=5.02 TeV are also presented. The vn values in Xe+Xe collisions are observed to be larger than those in Pb+Pb collisions for n=2, 3, and 4 in the most central events. However, with decreasing centrality or increasing harmonic order n, the vn values in Xe+Xe collisions become smaller than those in Pb+Pb collisions. The vn in Xe+Xe and Pb+Pb collisions are also compared as a function of the mean number of participating nucleons, (Npart), and the measured charged-particle multiplicity in the detector. The v3 values in Xe+Xe and Pb+Pb collisions are observed to be similar at the same (Npart) or multiplicity, but the other harmonics are significantly different. The ratios of the measured vn in Xe+Xe and Pb+Pb collisions, as a function of centrality, are also compared to theoretical calculations.
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