E-viri
PDF
Recenzirano
Odprti dostop
-
Abajyan, T.; Ahles, F.; Aoki, M.; Asai, S.; Augsten, K.; Bittner, B.; Boterenbrood, H.; Branchini, P.; Bucci, F.; Bugge, L.; Calafiura, P.; Carter, A.A.; Coadou, Y.; Compostella, G.; DʼOnofrio, M.; Dao, V.; Dervan, P.; Di Girolamo, A.; Dionisi, C.; Donini, J.; Eifert, T.; Engl, A.; Ernst, M.; Feng, C.; Feng, H.; Gardner, R.W.; Gentile, S.; Giraud, P.F.; Giugni, D.; Giunta, M.; Godfrey, J.; Golling, T.; Harvey, A.; Hayakawa, T.; Helsens, C.; Huseynov, N.; Iakovidis, G.; Kaplan, B.; Kashif, L.; Kim, S.H.; Klimentov, A.; Knoops, E.B.F.G.; Kowalewski, R.; Lang, V.S.; LeCompte, T.; Legendre, M.; Legger, F.; Lewis, G.H.; Li, S.; Lin, S.C.; Lissauer, D.; Lopes, L.; Maček, B.; Maiani, C.; Marchese, F.; Massol, N.; McCarthy, T.G.; Mikenberg, G.; Moa, T.; Morii, M.; Nelson, T.K.; Nicquevert, B.; Oakham, F.G.; Oliveira Damazio, D.; Penwell, J.; Piacquadio, G.; Plucinski, P.; Prabhu, R.; Ravenscroft, T.; Redelbach, A.; Ros, E.; Sansoni, A.; Scherzer, M.I.; Schmitt, C.; Schmitt, C.; Schroer, N.; Sinev, N.B.; Stanitzki, M.M.; Takeda, H.; Teuscher, R.J.; Tikhomirov, V.O.; Tricoli, A.; True, P.; Tyndel, M.; Vandelli, W.; Verkerke, W.; Villa, M.; Wilkens, H.G.; Willis, W.; Wittgen, M.; Yamada, M.; Yamanaka, T.; Yamauchi, K.; Youssef, S.; Zaytsev, A.; Zenin, O.; Zerwas, D.; Zimmermann, S.; Živković, L.; Zwalinski, L.
Physics letters. B, 08/2013, Letnik: 725, Številka: 1-3Journal Article
In order to study further the long-range correlations (“ridge”) observed recently in p+Pb collisions at sNN=5.02 TeV, the second-order azimuthal anisotropy parameter of charged particles, v2, has been measured with the cumulant method using the ATLAS detector at the LHC. In a data sample corresponding to an integrated luminosity of approximately 1 μb−1, the parameter v2 has been obtained using two- and four-particle cumulants over the pseudorapidity range |η|<2.5. The results are presented as a function of transverse momentum and the event activity, defined in terms of the transverse energy summed over 3.1<η<4.9 in the direction of the Pb beam. They show features characteristic of collective anisotropic flow, similar to that observed in Pb+Pb collisions. A comparison is made to results obtained using two-particle correlation methods, and to predictions from hydrodynamic models of p+Pb collisions. Despite the small transverse spatial extent of the p+Pb collision system, the large magnitude of v2 and its similarity to hydrodynamic predictions provide additional evidence for the importance of final-state effects in p+Pb reactions.
