Publication:
Beam energy dependence of net-Lambda fluctuations measured by the STAR experiment at the BNL Relativistic Heavy Ion Collider

Простая страница элемента
dc.contributor.authorAdam, J.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdams, J. R.
dc.contributor.authorAdkins, J. K.
dc.contributor.authorAlekseev, I.
dc.contributor.authorBrandin, A. V.
dc.contributor.authorKhyzhniak, Y. V.
dc.contributor.authorKochenda, L.
dc.contributor.authorKravtsov, P.
dc.contributor.authorNigmatkulov, G.
dc.contributor.authorOkorokov, V. A.
dc.contributor.authorStrikhanov, M.
dc.contributor.authorTaranenko, A.
dc.contributor.authorАлексеев, Игорь Геннадьевич
dc.contributor.authorБрандин, Андрей Владимирович
dc.contributor.authorНигматкулов, Григорий Александрович
dc.contributor.authorОкороков, Виталий Алексеевич
dc.contributor.authorСтриханов, Михаил Николаевич
dc.contributor.authorТараненко, Аркадий Владимирович
dc.date.accessioned2024-11-27T08:43:24Z
dc.date.available2024-11-27T08:43:24Z
dc.date.issued2020
dc.description.abstractThe measurements of particle multiplicity distributions have generated considerable interest in understanding the fluctuations of conserved quantum numbers in the quantum chromodynamics (QCD) hadronization regime, in particular near a possible critical point and near the chemical freeze-out. Net-protons and net-kaons have been used as proxies for the net-baryon number and net-strangeness, respectively. We report the measurement of efficiency- and centrality-bin width-corrected cumulant ratios (C-2/C-1,C-3/C-3) of net-A distributions, in the context of both strangeness and baryon number conservation, as a function of collision energy, centrality, and rapidity. The results are for Au + Au collisions at five beam energies (root s(NN) = 19.6, 27, 39, 62.4, and 200 GeV) recorded with the Solenoidal Tracker at RHIC (STAR). We compare our results to the Poisson and negative binomial (NBD) expectations, as well as to ultrarelativistic quantum molecular dynamics (UrQMD) and hadron resonance gas (HRG) model predictions. Both NBD and Poisson baselines agree with data within the statistical and systematic uncertainties. UrQMD describes the measured net-A C-1 and C-3 at 200 GeV reasonably well but deviates from C-2, and the deviation increases as a function of collision energy. The ratios of the measured cumulants show no features of critical fluctuations. The chemical freeze-out temperatures extracted from a recent HRG calculation, which was successfully used to describe the net-proton, net-kaon, and net-charge data, indicate A freeze-out conditions similar to those of kaons. However, large deviations are found when comparing with temperatures obtained from net-proton fluctuations. The net-A cumulants show a weak but finite dependence on the rapidity coverage in the acceptance of the detector, which can be attributed to quantum number conservation.
dc.identifier.citationBeam energy dependence of net-Lambda fluctuations measured by the STAR experiment at the BNL Relativistic Heavy Ion Collider / Adam, J [et al.] // Physical Review C. - 2020. - 102. - № 2. - 10.1103/PhysRevC.102.024903
dc.identifier.doi10.1103/PhysRevC.102.024903
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevC.102.024903
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85092548370&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000572427800002
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22448
dc.relation.ispartofPhysical Review C
dc.titleBeam energy dependence of net-Lambda fluctuations measured by the STAR experiment at the BNL Relativistic Heavy Ion Collider
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume102
relation.isAuthorOfPublication6b4fd793-a76a-4b97-b3bb-76471504924f
relation.isAuthorOfPublication86fb429a-6e41-44c7-b025-4cf32d1f2f74
relation.isAuthorOfPublication145a9bef-949b-4012-87dd-f26fcf29c3a2
relation.isAuthorOfPublication12ad78c6-42e8-4584-9d58-8063e07fd584
relation.isAuthorOfPublication85af5626-2b88-4006-9deb-f9293b0bdc4c
relation.isAuthorOfPublication0251bcb9-399a-497b-a1f2-77360ac345a6
relation.isAuthorOfPublication.latestForDiscovery6b4fd793-a76a-4b97-b3bb-76471504924f
relation.isOrgUnitOfPublicationba0b4738-e6bd-4285-bda5-16ab2240dbd1
relation.isOrgUnitOfPublication543ffddb-d115-4466-be75-83b0f2c5a473
relation.isOrgUnitOfPublication06e1796d-4f55-4057-8d7e-bb2f3b5676f5
relation.isOrgUnitOfPublicationd19559ab-04cd-486a-ae8e-f40ccd36a1a6
relation.isOrgUnitOfPublication.latestForDiscoveryba0b4738-e6bd-4285-bda5-16ab2240dbd1
relation.isProjectOfPublicationd9dbbd1f-7c84-4233-bda7-7bff1a8c91af
relation.isProjectOfPublication.latestForDiscoveryd9dbbd1f-7c84-4233-bda7-7bff1a8c91af
Файлы
Коллекции
Публикации