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001-es BibID:	BIBFORM121737
035-os BibID:	(WoS)000419641100031 (Scopus)85037663555
Első szerző:	CMS Collaboration
Cím:	Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV/c in PbPb collisions at root{s_NN} = 5.02 TeV / CMS Collaboration
Dátum:	2018
ISSN:	0370-2693
Megjegyzések:	The Fourier coefficients v(2) and v(3) characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at root S-NN = 5.02 TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, 1 < p(T) < 100 GeV/c. The analysis focuses on the p(T) > 10 GeV/c range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60% most central events. The v(2) coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to initial-state fluctuations. The values from both methods remain positive up to p(T) similar to 60-80 GeV/c, in all examined centrality classes. The v(3) coefficient, only measured with the scalar product method, tends to zero for p(T) greater than or similar to 20 GeV/c. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk CMS Flow High-pT Jet quenching Parton energy loss QGP
Megjelenés:	Physics Letters B. - 776 (2018), p. 195-216. -
További szerzők:	Karancsi János (1987-) (fizikus) Bartók Márton (fizikus) Raics Péter (1944-) (fizikus) Trócsányi Zoltán (1961-) (fizikus) Ujvári Balázs (1977-) (fizikus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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