Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/12012
Title: Disentangling Sources of Momentum Fluctuations in Xe Plus Xe and Pb Plus Pb Collisions With the Atlas Detector
Authors: Aad, G.
Aakvaag, E.
Abbott, B.
Abdelhameed, S.
Abeling, K.
Abicht, N. J.
Zwalinski, L.
Publisher: Amer Physical Soc
Abstract: High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p(T)])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p(T)]) in Pb-208 thorn Pb-208 and Xe-129 thorn Xe-129 collisions at root s(NN) = 5.02 and 5.44 TeV, respectively, using the ATLAS detector at the LHC. All observables show distinct features in ultracentral collisions, which are explained by a suppression of the geometrical component as the overlap area reaches its maximum. These results demonstrate a new technique to separate geometrical and intrinsic fluctuations, providing constraints on initial conditions and properties of the quark-gluon plasma, such as the speed of sound.
Description: Abdelhameed, Sara/0000-0002-0287-5869; Fernandez-Martinez, Pablo/0000-0002-7818-6971; Stanislaus, Beojan/0000-0001-9007-7658; Balek, Petr/0000-0002-0942-1966; Sala, Alessandro/0000-0003-0824-7326; Abramowicz, Halina/0000-0001-5329-6640; D'Auria, Saverio/0000-0003-3393-6318; Dyndal, Mateusz/0000-0001-9632-6352; Aboulhorma, Asmaa/0000-0002-9987-2292; Mckee, Shawn/0000-0002-4551-4502; Hillier, Stephen/0000-0002-7599-6469; Konstantinidis, Nikolaos/0000-0002-4140-6360; Ventura, Andrea/0000-0002-3368-3413; Mitsou, Vasiliki A./0000-0002-1533-8886; Dabrowski, Wladyslaw/0000-0001-9061-9568; Ragusa, Francesco/0000-0002-4064-0489; Abbott, Braden/0000-0002-5888-2734; Carbone, Antonio/0000-0002-4117-3800; /0000-0001-5765-1750; Aad, Georges/0000-0002-6665-4934; Potepa, Patrycja Anna/0000-0002-1325-7214; Nellist, Clara/0000-0002-5171-8579; Butterworth, Jonathan/0000-0002-5905-5394; Mindur, Bartosz/0000-0002-5511-2611; Riu, Imma/0000-0002-3742-4582; Petersen, Troels/0000-0003-0221-3037; Domijan, Karolina/0009-0001-4200-1592; Bold, Tomasz/0000-0002-2432-411X; Abicht, Nils Julius/0000-0001-5763-2760; Carmignani, Joseph (Joe)/0000-0002-1705-1061; Gwilliam, Carl/0000-0002-9401-5304; Grabowska-Bold, Iwona/0000-0001-9159-1210; Fiorini, Luca/0000-0002-5070-2735; Nasella, Laura/0000-0002-4871-784X; Mlinarevic, Marin/0000-0003-3587-646X; Haley, Joseph/0000-0002-6938-7405; Calafiura, Paolo/0000-0002-1692-1678; Camplani, Alessandra/0000-0002-6386-9788; Etzion, Erez/0000-0001-6871-7794; Rompotis, Nikolaos/0000-0003-2577-1875; Maj, Klaudia/0000-0003-4819-9226; Mazzeo, Elena/0000-0002-8406-0195; Kretzschmar, Jan/0000-0002-8515-1355; Charlton, David/0000-0003-0211-2041; Lomas, Josh/0000-0001-7456-494X
URI: https://doi.org/10.1103/PhysRevLett.133.252301
ISSN: 0031-9007
1079-7114
Appears in Collections:PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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