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Relative particle yield fluctuations in Pb--Pb collisions at sNN=2.76TeV.

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Title: Relative particle yield fluctuations in Pb--Pb collisions at sNN=2.76TeV.
Authors: Acharya, S.1 (AUTHOR), Adamová, D.2 (AUTHOR), Adolfsson, J.3 (AUTHOR), Aggarwal, M. M.4 (AUTHOR), Aglieri Rinella, G.5 (AUTHOR), Agnello, M.6 (AUTHOR), Agrawal, N.7 (AUTHOR), Ahammed, Z.1 (AUTHOR), Ahn, S. U.8 (AUTHOR), Aiola, S.9 (AUTHOR), Akindinov, A.10 (AUTHOR), Al-Turany, M.11 (AUTHOR), Alam, S. N.1 (AUTHOR), Albuquerque, D. S. D.12 (AUTHOR), Aleksandrov, D.13 (AUTHOR), Alessandro, B.14 (AUTHOR), Molina, R. Alfaro15 (AUTHOR), Ali, Y.16 (AUTHOR), Alici, A.17,18,19 (AUTHOR), Alkin, A.20 (AUTHOR)
Source: European Physical Journal C -- Particles & Fields. Mar2019, Vol. 79 Issue 3, pN.PAG-N.PAG. 1p.
Subjects: Proton-proton interactions, Statistical smoothing, Particles, Multiplicity (Mathematics)
Abstract: First results on K / π , p / π and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb--Pb collisions at s NN = 2.76 TeV . The observable ν dyn , which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of relative particle yields and also provides insight into the correlation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distributions in case of incomplete particle identification. The results for p / π show a change of sign in ν dyn from positive to negative towards more peripheral collisions. For central collisions, the results follow the smooth trend of the data at lower energies and ν dyn exhibits a change in sign for p / π and K/p. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Relative particle yield fluctuations in Pb--Pb collisions at sNN=2.76TeV.
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+C+--+Particles+%26+Fields%22">European Physical Journal C -- Particles & Fields</searchLink>. Mar2019, Vol. 79 Issue 3, pN.PAG-N.PAG. 1p.
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  Data: First results on K / π , p / π and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb--Pb collisions at s NN = 2.76 TeV . The observable ν dyn , which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of relative particle yields and also provides insight into the correlation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distributions in case of incomplete particle identification. The results for p / π show a change of sign in ν dyn from positive to negative towards more peripheral collisions. For central collisions, the results follow the smooth trend of the data at lower energies and ν dyn exhibits a change in sign for p / π and K/p. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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