0436940 - FZÚ 2015 RIV US eng J - Článek v odborném periodiku
Adare, A. - Afanasiev, S. - Aidala, C. - Tomášek, Lukáš - Tomášek, Michal - Vrba, Václav … celkem 561 autorů
Medium modification of jet fragmentation in Au plus Au collisions at root S-NN=200 GeV measured in direct photon-hadron correlations.
Physical Review Letters. Roč. 111, č. 3 (2013), "032301-1"-"032301-8". ISSN 0031-9007. E-ISSN 1079-7114
Institucionální podpora: RVO:68378271
Klíčová slova: quark-gluon plasma * phenix * collaboration * perspective * detector * TeV
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 7.728, rok: 2013 ; AIS: 3.466, rok: 2013
DOI: https://doi.org/10.1103/PhysRevLett.111.032301

The jet fragmentation function is measured with direct photon-hadron correlations in p + p and Au + Au collisions at root S-NN = 200 GeV. The P-T of the photon is an excellent approximation to the initial P-T of the jet and the ratio Z(T) = P-T(h)/P-T(gamma) is used as a proxy for the jet fragmentation function. A statistical subtraction is used to extract the direct photon-hadron yields in Au + Au collisions while a photon isolation cut is applied in p + p. I-AA, the ratio of hadron yield opposite the photon in Au + Au to that in p + p, indicates modification of the jet fragmentation function. Suppression, most likely due to energy loss in the medium, is seen at high Z(T). The associated hadron yield at low Z(T) is enhanced at large angles. Such a trend is expected from redistribution of the lost energy into increased production of low-momentum particles.
Trvalý link: http://hdl.handle.net/11104/0240541