@article{3073576,
    title = "Harmonic decomposition of two particle angular correlations in Pb-Pb collisions at sNN=2.76TeV",
    author = "Aamodt, K. and Abelev, B. and Abrahantes Quintana, A. and Adamová, D. and Adare, A.M. and Aggarwal, M.M. and Aglieri Rinella, G. and Agocs, A.G. and Agostinelli, A. and Aguilar Salazar, S. and Ahammed, Z. and Ahmad, N. and Ahmad Masoodi, A. and Ahn, S.U. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alfaro Molina, R. and Alici, A. and Alkin, A. and Almaráz Aviña, E. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Andrei, C. and Andronic, A. and Anguelov, V. and Anielski, J. and Antičić, T. and Antinori, F. and Antonioli, P. and Aphecetche, L. and Appelshäuser, H. and Arbor, N. and Arcelli, S. and Arend, A. and Armesto, N. and Arnaldi, R. and Aronsson, T. and Arsene, I.C. and Arslandok, M. and Asryan, A. and Augustinus, A. and Averbeck, R. and Awes, T.C. and Äystö, J. and Azmi, M.D. and Bach, M. and Badalà, A. and Baek, Y.W. and Bailhache, R. and Bala, R. and Baldini Ferroli, R. and Baldisseri, A. and Baldit, A. and Baltasar dos Santos Pedrosa, F. and Bán, J. and Baral, R.C. and Barbera, R. and Barile, F. and Barnaföldi, G.G. and Barnby, L.S. and Barret, V. and Bartke, J. and Basile, M. and Bastid, N. and Bathen, B. and Batigne, G. and Batyunya, B. and Baumann, C. and Bearden, I.G. and Beck, H. and Belikov, I. and Bellini, F. and Bellwied, R. and Belmont-Moreno, E. and Beole, S. and Berceanu, I. and Bercuci, A. and Berdnikov, Y. and Berenyi, D. and Bergmann, C. and Betev, L. and Bhasin, A. and Bhati, A.K. and Bianchi, L. and Bianchi, N. and Bianchin, C. and Bielčík, J. and Bielčíková, J. and Bilandzic, A. and Biolcati, E. and Blanco, F. and Blanco, F. and Blau, D. and Blume, C. and Bock, N. and Bogdanov, A. and Bøggild, H. and Bogolyubsky, M. and Boldizsár, L. and Bombara, M. and Bombonati, C. and Book, J. and Borel, H. and Borissov, A. and Bortolin, C. and Bose, S. and Bossú, F. and Botje, M. and Böttger, S. and Boyer, B. and Braun-Munzinger, P. and Bregant, M. and Breitner, T. and Broz, M. and Brun, R. and Bruna, E. and Bruno, G.E. and Budnikov, D. and Buesching, H. and Bufalino, S. and Bugaiev, K. and Busch, O. and Buthelezi, Z. and Caffarri, D. and Cai, X. and Caines, H. and Calvo Villar, E. and Camerini, P. and Canoa Roman, V. and Cara Romeo, G. and Carena, F. and Carena, W. and Carminati, F. and Casanova Díaz, A. and Caselle, M. and Castillo Castellanos, J. and Casula, E.A.R. and Catanescu, V. and Cavicchioli, C. and Cepila, J. and Cerello, P. and Chang, B. and Chapeland, S. and Charvet, J.L. and Chattopadhyay, S. and Chattopadhyay, S. and Cherney, M. and Cheshkov, C. and Cheynis, B. and Chiavassa, E. and Chibante Barroso, V. and Chinellato, D.D. and Chochula, P. and Chojnacki, M. and Christakoglou, P. and Christensen, C.H. and Christiansen, P. and Chujo, T. and Chung, S.U. and Cicalo, C. and Cifarelli, L. and Cindolo, F. and Cleymans, J. and Coccetti, F. and Coffin, J.-P. and Colamaria, F. and Colella, D. and Conesa Balbastre, G. and Conesa del Valle, Z. and Constantin, P. and Contin, G. and Contreras, J.G. and Cormier, T.M. and Corrales Morales, Y. and Cortés Maldonado, I. and Cortese, P. and Cosentino, M.R. and Costa, F. and Cotallo, M.E. and Crochet, P. and Cruz Alaniz, E. and Cuautle, E. and Cunqueiro, L. and Erasmo, G.D. and Dainese, A. and Dalsgaard, H.H. and Danu, A. and Das, D. and Das, I. and Das, K. and Dash, A. and Dash, S. and De, S. and de Azevedo Moregula, A. and de Barros, G.O.V. and de Caro, A. and de Cataldo, G. and de Cuveland, J. and de Falco, A. and de Gruttola, D. and de Marco, N. and de Pasquale, S. and de Rooij, R. and del Castillo Sanchez, E. and Delagrange, H. and Deloff, A. and Demanov, V. and Dénes, E. and Deppman, A. and di Bari, D. and di Giglio, C. and di Liberto, S. and di Mauro, A. and di Nezza, P. and Dietel, T. and Divià, R. and Djuvsland, Ø. and Dobrin, A. and Dobrowolski, T. and Domínguez, I. and Dönigus, B. and Dordic, O. and Driga, O. and Dubey, A.K. and Ducroux, L. and Dupieux, P. and Dutta Majumdar, A.K. and Dutta Majumdar, M.R. and Elia, D. and Emschermann, D. and Engel, H. and Erdal, H.A. and Espagnon, B. and Estienne, M. and Esumi, S. and Evans, D. and Eyyubova, G. and Fabris, D. and Faivre, J. and Falchieri, D. and Fantoni, A. and Fasel, M. and Fearick, R. and Fedunov, A. and Fehlker, D. and Felea, D. and Fenton-Olsen, B. and Feofilov, G. and Fernández Téllez, A. and Ferreiro, E.G. and Ferretti, A. and Ferretti, R. and Figiel, J. and Figueredo, M.A.S. and Filchagin, S. and Fini, R. and Finogeev, D. and Fionda, F.M. and Fiore, E.M. and Floris, M. and Foertsch, S. and Foka, P. and Fokin, S. and Fragiacomo, E. and Fragkiadakis, M. and Frankenfeld, U. and Fuchs, U. and Furget, C. and Fusco Girard, M. and Gaardhøje, J.J. and Gagliardi, M. and Gago, A. and Gallio, M. and Gangadharan, D.R. and Ganoti, P. and Garabatos, C. and Garcia-Solis, E. and Garishvili, I. and Gerhard, J. and Germain, M. and Geuna, C. and Gheata, A. and Gheata, M. and Ghidini, B. and Ghosh, P. and Gianotti, P. and Girard, M.R. 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    journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
    year = "2012",
    volume = "708",
    number = "3-5",
    pages = "249-264",
    publisher = "Elsevier",
    doi = "10.1016/j.physletb.2012.01.060",
    abstract = "Angular correlations between unidentified charged trigger (t) and associated (a) particles are measured by the ALICE experiment in Pb-Pb collisions at sNN=2.76TeV for transverse momenta 0.25<pTt,a<15GeV/c, where pTt>pTa. The shapes of the pair correlation distributions are studied in a variety of collision centrality classes between 0 and 50% of the total hadronic cross section for particles in the pseudorapidity interval |η|<1.0. Distributions in relative azimuth δφ≡φt-φa are analyzed for |δη|≡|ηt-ηa|>0.8, and are referred to as "long-range correlations". Fourier components Vnδ≡〈cos(nδφ)〉 are extracted from the long-range azimuthal correlation functions. If particle pairs are correlated to one another through their individual correlation to a common symmetry plane, then the pair anisotropy Vnδ(pTt,pTa) is fully described in terms of single-particle anisotropies vn(pT) as Vnδ(pTt,pTa)=vn(pTt)vn(pTa). This expectation is tested for 1≤n≤5 by applying a global fit of all Vnδ(pTt,pTa) to obtain the best values vn{GF}(pT). It is found that for 2≤n≤5, the fit agrees well with data up to pTa~3-4GeV/c, with a trend of increasing deviation as pTt and pTa are increased or as collisions become more peripheral. This suggests that no pair correlation harmonic can be described over the full 0.25<pT<15GeV/c range using a single vn(pT) curve; such a description is however approximately possible for 2≤n≤5 when pTa<4GeV/c. For the n=1 harmonic, however, a single v1(pT) curve is not obtained even within the reduced range pTa<4GeV/c. © 2012 CERN."
}