Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions

Katarina Gajdosova; S. Acharya; D. Adamova; MM. Aggarwal; G.A. Rinella; A. Agnello; N. Agrawal; Z. Ahammed; N Ahmad; S. U. Ahn; S. Aiola; A. Akindinov; SN Alam; DSD Albuquerque; D. Aleksandrov; Ian Bearden; Christian Holm Christensen; Kristjan Herlache Gulbrandsen; Jens Jørgen Gaardhøje; Børge Svane Nielsen; Ante Bilandzic; Marek Chojnacki; Valentina Zaccolo; You Zhou; Christian Alexander Bourjau; Lais Ozelin de Lima Pimentel; Vojtech Pacik

doi:10.1016/j.nuclphysa.2017.04.033

Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions

Katarina Gajdosova, S. Acharya, D. Adamova, MM. Aggarwal, G.A. Rinella, A. Agnello, N. Agrawal, Z. Ahammed, N Ahmad, S. U. Ahn, S. Aiola, A. Akindinov, SN Alam, DSD Albuquerque, D. Aleksandrov, Ian Bearden, Christian Holm Christensen, Kristjan Herlache Gulbrandsen, Jens Jørgen Gaardhøje, Børge Svane NielsenAnte Bilandzic, Marek Chojnacki, Valentina Zaccolo, You Zhou, Christian Alexander Bourjau, Lais Ozelin de Lima Pimentel, Vojtech Pacik

Experimental Particle Physics

6 Citations (Scopus)

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Abstract

Two- and multi-particle azimuthal correlations have proven to be an excellent tool to probe the properties of the strongly interacting matter created in heavy-ion collisions. Recently, the results obtained for multi-particle cumulants have been interpreted as evidence for collectivity in the small collision systems (pp and p–Pb) providing new insights into the systems' fluctuating initial conditions. In this article, first ALICE results on two- and multi-particle cumulants as a function of charged hadron multiplicity produced at midrapidity (|η| < 1.0) in pp collisions at s=13 TeV are reported. The results are compared with measurements in p–Pb collisions at s_NN=5.02 TeV and in Pb–Pb collisions at s_NN=2.76 TeV. A new method for the 4-particle cumulant with an η gap denoted as c_n{4,|Δη|} will be presented, which is capable of further suppressing non-flow effects in multi-particle cumulants. The results allow for further understanding of the origin of multi-particle correlations in pp collisions.

Original language	English
Journal	Nuclear Physics A
Volume	967
Pages (from-to)	437-440
ISSN	0375-9474
DOIs	https://doi.org/10.1016/j.nuclphysa.2017.04.033
Publication status	Published - 1 Nov 2017

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1-s2.0-S0375947417301045-mainFinal published version, 173 KBLicence: CC BY

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Gajdosova, K., Acharya, S., Adamova, D., Aggarwal, MM., Rinella, G. A., Agnello, A., Agrawal, N., Ahammed, Z., Ahmad, N., U. Ahn, S., Aiola, S., Akindinov, A., Alam, SN., Albuquerque, DSD., Aleksandrov, D., Bearden, I., Christensen, C. H., Gulbrandsen, K. H., Gaardhøje, J. J., ... Pacik, V. (2017). Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions. Nuclear Physics A, 967, 437-440. https://doi.org/10.1016/j.nuclphysa.2017.04.033

Gajdosova, K, Acharya, S, Adamova, D, Aggarwal, MM, Rinella, GA, Agnello, A, Agrawal, N, Ahammed, Z, Ahmad, N, U. Ahn, S, Aiola, S, Akindinov, A, Alam, SN, Albuquerque, DSD, Aleksandrov, D, Bearden, I , Christensen, CH , Gulbrandsen, KH , Gaardhøje, JJ , Nielsen, BS, Bilandzic, A, Chojnacki, M, Zaccolo, V, Zhou, Y, Bourjau, CA, Pimentel, LODL & Pacik, V 2017, 'Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions', Nuclear Physics A, vol. 967, pp. 437-440. https://doi.org/10.1016/j.nuclphysa.2017.04.033

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title = "Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions",

abstract = "Two- and multi-particle azimuthal correlations have proven to be an excellent tool to probe the properties of the strongly interacting matter created in heavy-ion collisions. Recently, the results obtained for multi-particle cumulants have been interpreted as evidence for collectivity in the small collision systems (pp and p–Pb) providing new insights into the systems' fluctuating initial conditions. In this article, first ALICE results on two- and multi-particle cumulants as a function of charged hadron multiplicity produced at midrapidity (|η| < 1.0) in pp collisions at s=13 TeV are reported. The results are compared with measurements in p–Pb collisions at sNN=5.02 TeV and in Pb–Pb collisions at sNN=2.76 TeV. A new method for the 4-particle cumulant with an η gap denoted as cn{4,|Δη|} will be presented, which is capable of further suppressing non-flow effects in multi-particle cumulants. The results allow for further understanding of the origin of multi-particle correlations in pp collisions.",

author = "Katarina Gajdosova and S. Acharya and D. Adamova and MM. Aggarwal and G.A. Rinella and A. Agnello and N. Agrawal and Z. Ahammed and N Ahmad and {U. Ahn}, S. and S. Aiola and A. Akindinov and SN Alam and DSD Albuquerque and D. Aleksandrov and Ian Bearden and Christensen, {Christian Holm} and Gulbrandsen, {Kristjan Herlache} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Ante Bilandzic and Marek Chojnacki and Valentina Zaccolo and You Zhou and Bourjau, {Christian Alexander} and Pimentel, {Lais Ozelin de Lima} and Vojtech Pacik",

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T1 - Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions

AU - Gajdosova, Katarina

AU - Acharya, S.

AU - Adamova, D.

AU - Aggarwal, MM.

AU - Rinella, G.A.

AU - Agnello, A.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, N

AU - U. Ahn, S.

AU - Aiola, S.

AU - Akindinov, A.

AU - Alam, SN

AU - Albuquerque, DSD

AU - Aleksandrov, D.

AU - Bearden, Ian

AU - Christensen, Christian Holm

AU - Gulbrandsen, Kristjan Herlache

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Bilandzic, Ante

AU - Chojnacki, Marek

AU - Zaccolo, Valentina

AU - Zhou, You

AU - Bourjau, Christian Alexander

AU - Pimentel, Lais Ozelin de Lima

AU - Pacik, Vojtech

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Two- and multi-particle azimuthal correlations have proven to be an excellent tool to probe the properties of the strongly interacting matter created in heavy-ion collisions. Recently, the results obtained for multi-particle cumulants have been interpreted as evidence for collectivity in the small collision systems (pp and p–Pb) providing new insights into the systems' fluctuating initial conditions. In this article, first ALICE results on two- and multi-particle cumulants as a function of charged hadron multiplicity produced at midrapidity (|η| < 1.0) in pp collisions at s=13 TeV are reported. The results are compared with measurements in p–Pb collisions at sNN=5.02 TeV and in Pb–Pb collisions at sNN=2.76 TeV. A new method for the 4-particle cumulant with an η gap denoted as cn{4,|Δη|} will be presented, which is capable of further suppressing non-flow effects in multi-particle cumulants. The results allow for further understanding of the origin of multi-particle correlations in pp collisions.

AB - Two- and multi-particle azimuthal correlations have proven to be an excellent tool to probe the properties of the strongly interacting matter created in heavy-ion collisions. Recently, the results obtained for multi-particle cumulants have been interpreted as evidence for collectivity in the small collision systems (pp and p–Pb) providing new insights into the systems' fluctuating initial conditions. In this article, first ALICE results on two- and multi-particle cumulants as a function of charged hadron multiplicity produced at midrapidity (|η| < 1.0) in pp collisions at s=13 TeV are reported. The results are compared with measurements in p–Pb collisions at sNN=5.02 TeV and in Pb–Pb collisions at sNN=2.76 TeV. A new method for the 4-particle cumulant with an η gap denoted as cn{4,|Δη|} will be presented, which is capable of further suppressing non-flow effects in multi-particle cumulants. The results allow for further understanding of the origin of multi-particle correlations in pp collisions.

U2 - 10.1016/j.nuclphysa.2017.04.033

DO - 10.1016/j.nuclphysa.2017.04.033

M3 - Journal article

SN - 0375-9474

VL - 967

SP - 437

EP - 440

JO - Nuclear Physics A: Nuclear and Hadronic Physics

JF - Nuclear Physics A: Nuclear and Hadronic Physics

ER -

Investigations of anisotropic collectivity using multi-particle correlations in pp, p-Pb and Pb-Pb collisions

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