Angularcorrelationsbetweenunidentifiedchargedtriggerparticlesandvariousspeciesofchargedassociatedparticles(unidentifiedparticles,pions,kaons,protonsandantiprotons)aremeasuredbytheALICEdetectorinp–Pbcollisionsatanucleon–nucleoncentre-of-massenergyof5.02TeVinthetransverse-momentumrange0.3<pT<4GeV/c.Thecorrelationsexpressedasassociatedyieldpertriggerparticleareobtainedinthepseudorapidityrange|ηlab|<0.8.Fouriercoefficientsareextractedfromthelong-rangecorrelationsprojectedontotheazimuthalangledifferenceandstudiedasafunctionofpTandinintervalsofeventmultiplicity.Inhigh-multiplicityevents,thesecond-ordercoefficientforprotons,vp2,isobservedtobesmallerthanthatforpions,vπ2,uptoaboutpT=2GeV/c.Toreducecorrelationsduetojets,theper-triggeryieldmeasuredinlow-multiplicityeventsissubtractedfromthatinhigh-multiplicityevents.Atwo-ridgestructureisobtainedforallparticlespecies.TheFourierdecompositionofthisstructureshowsthatthesecond-ordercoefficientsforpionsandkaonsaresimilar.Thevp2isfoundtobesmalleratlowpTandlargerathigherpTthanvπ2,withacrossingoccurringatabout2GeV/c.Thisisqualitativelysimilartotheelliptic-flowpatternobservedinheavy-ioncollisions.Amassorderingeffectatlowtransversemomentaisconsistentwithexpectationsfromhydrodynamicmodelcalculationsassumingacollectivelyexpandingsystem.

B. Abelev, J. Adam, D. Adamová, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, et al. (2013). Long-range angular correlations of π, K and p in p–Pb collisions at root s(NN)=5.02 TeV. PHYSICS LETTERS. SECTION B, 726(1-3), 164-177 [10.1016/j.physletb.2013.08.024].

Long-range angular correlations of π, K and p in p–Pb collisions at root s(NN)=5.02 TeV

AGOSTINELLI, ANDREA;ALICI, ANDREA;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;COLOCCI, MANUEL;FALCHIERI, DAVIDE;GUERZONI, BARBARA;SCIOLI, GILDA;
2013

Abstract

Angularcorrelationsbetweenunidentifiedchargedtriggerparticlesandvariousspeciesofchargedassociatedparticles(unidentifiedparticles,pions,kaons,protonsandantiprotons)aremeasuredbytheALICEdetectorinp–Pbcollisionsatanucleon–nucleoncentre-of-massenergyof5.02TeVinthetransverse-momentumrange0.3
2013
B. Abelev, J. Adam, D. Adamová, A. M. Adare, M. M. Aggarwal, G. Aglieri Rinella, et al. (2013). Long-range angular correlations of π, K and p in p–Pb collisions at root s(NN)=5.02 TeV. PHYSICS LETTERS. SECTION B, 726(1-3), 164-177 [10.1016/j.physletb.2013.08.024].
B. Abelev; J. Adam; D. Adamová; A. M. Adare; M. M. Aggarwal; G. Aglieri Rinella; A. G. Agocs; A. Agostinelli; S. Aguilar Salazar; Z. Ahammed; A. Ahmad...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/387547
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