Publication:
Measurements of the chiral magnetic effect with background isolation in 200 GeV Au+Au collisions at STAR

Простая страница элемента
dc.contributor.authorZhao, J.
dc.contributor.authorAdam, J.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdams, J. R.
dc.contributor.authorAlekseev, I.
dc.contributor.authorBrandin, A. 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.accessioned2024-11-21T16:11:29Z
dc.date.available2024-11-21T16:11:29Z
dc.date.issued2019
dc.description.abstractUsing two novel methods, pair invariant mass (m(inv)) and comparative measurements with respect to reaction plane (Psi(RP)) and participant plane (Psi(PP)), we isolate the possible chiral magnetic effect (CME) from backgrounds in 200 GeV Au+Au collisions at STAR. The invariant mass method identifies the resonance background contributions, coupled with the elliptic flow (v(2)), to the charge correlator CME observable (Delta gamma). At high mass (m(inv) > 1.5 GeV/c(2)) where resonance contribution is small, we obtain the average Delta gamma magnitude. In the low mass region (m(inv) < 1.5 GeV/c(2)), resonance peaks are observed in Delta gamma(m(inv)). An event shape engineering (ESE) method is used to model the background shape in m(inv) to extract the potential CME signal at low m(inv). In the comparative method, the Psi(RP) is assessed by spectator neutrons measured by the ZDCs, and the Psi(PP) by the 2nd-harmonic event plane measured by the TPC. The v(2) is stronger along Psi(PP) and weaker along Psi(RP); in contrast, the magnetic field, mainly from spectator protons, is weaker along Psi(PP) and stronger along Psi(RP). As a result, the Delta gamma measured with respect to Psi(RP) and Psi(PP) contain different amounts of CME and background, and can thus determine these two contributions. It is found that the possible CME signals with background isolation by these two novel methods are small, on the order of a few percent of the inclusive Delta gamma measurements.
dc.format.extentС. 535-538
dc.identifier.citationMeasurements of the chiral magnetic effect with background isolation in 200 GeV Au+Au collisions at STAR / Zhao, J [et al.] // NUCLEAR PHYSICS A. - 2019. - 982. - P. 535-538. - 10.1016/j.nuclphysa.2018.08.035
dc.identifier.doi10.1016/j.nuclphysa.2018.08.035
dc.identifier.urihttps://www.doi.org/10.1016/j.nuclphysa.2018.08.035
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000457515500119
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/19139
dc.relation.ispartofNUCLEAR PHYSICS A
dc.titleMeasurements of the chiral magnetic effect with background isolation in 200 GeV Au+Au collisions at STAR
dc.typeArticle; Proceedings Paper
dspace.entity.typePublication
oaire.citation.volume982
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.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