Bibcode
Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rad, N.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Strauss, J.; Waltenberger, W.; Wulz, C.-E.; Dvornikov, O.; Makarenko, V.; Mossolov, V.; Suarez Gonzalez, J.; Zykunov, V.; Shumeiko, N.; Alderweireldt, S.; De Wolf, E. A.; Janssen, X.; Lauwers, J.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; De Bruyn, I.; Deroover, K.; Lowette, S.; Moortgat, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Luetic, J.; Maerschalk, T.; Marinov, A.; Randle-conde, A.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Yonamine, R.; Zenoni, F.; Zhang, F.; Cimmino, A.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Salva, S.; Schöfbeck, R.; Tytgat, M.; Van Driessche, W.; Yazgan, E.; Zaganidis, N.; Bakhshiansohi, H.; Beluffi, C.; Bondu, O.; Brochet, S. et al.
Referencia bibliográfica
Physics Letters B, Volume 776, p. 195-216.
Fecha de publicación:
1
2018
Número de citas
47
Número de citas referidas
43
Descripción
The Fourier coefficients v2 and v3 characterizing
the anisotropy of the azimuthal distribution of charged particles
produced in PbPb collisions at √{sNN } = 5.02 TeV are
measured with data collected by the CMS experiment. The measurements
cover a broad transverse momentum range, 1 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 v2 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 pT ∼ 60-
80 GeV / c, in all examined centrality classes. The v3
coefficient, only measured with the scalar product method, tends to zero
for pT ≳ 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.