@article{3073256,
    title = "Charge correlations using the balance function in Pb-Pb collisions at √sNN=2.76 TeV",
    author = "Abelev, B. and Adam, J. and Adamová, D. and Adare, A.M. and Aggarwal, M.M. and Aglieri Rinella, G. and Agnello, M. and Agocs, A.G. and Agostinelli, A. and Ahammed, Z. and Ahmad, N. and Ahmad Masoodi, A. and Ahn, S.U. and Ahn, S.A. and Ajaz, M. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. 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 Anson, C. 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 Azmiq, 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 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 Basu, S. and Bathen, B. and Batigne, G. and Batyunya, B. and Baumann, C. and Bearden, I.G. and Beck, H. and Behera, N.K. and Belikov, I. and Bellini, F. and Bellwied, R. and Belmont-Moreno, E. and Bencedi, G. and Beole, S. and Berceanu, I. and Bercuci, A. and Berdnikov, Y. and Berenyi, D. and Bergognon, A.A.E. and Berzano, D. and Betev, L. and Bhasin, A. and Bhati, A.K. and Bhom, J. and Bianchi, N. and Bianchi, L. and Bielčík, J. and Bielčíková, J. and Bilandzic, A. and Bjelogrlic, S. and Blanco, F. and Blanco, F. and Blau, D. and Blume, C. and Boccioli, M. and Böttger, S. and Bogdanov, A. and Bøggild, H. and Bogolyubsky, M. and Boldizsár, L. and Bombara, M. and Book, J. and Borel, H. and Borissov, A. and Bossú, F. and Botje, M. and Botta, E. and Braidot, E. and Braun-Munzinger, P. and Bregant, M. and Breitner, T. and Broker, T.A. and Browning, T.A. and Broz, M. and Brun, R. and Bruna, E. and Bruno, G.E. and Budnikov, D. and Buesching, H. and Bufalino, S. and Buncic, P. 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 Carlin Filho, N. and Carminati, F. and Casanova Díaz, A. and Castillo Castellanos, J. and Castillo Hernandez, J.F. and Casula, E.A.R. and Catanescu, V. and Cavicchioli, C. and Ceballos Sanchez, C. and Cepila, J. and Cerello, P. and Chang, B. and Chapeland, S. and Charvet, J.L. and Chattopadhyay, S. and Chattopadhyay, S. and Chawla, I. and Cherney, M. and Cheshkov, C. and Cheynis, B. and Chibante Barroso, V. and Chinellato, D.D. and Chochula, P. and Chojnacki, M. and Choudhury, S. 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 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J. and Yu, W. and Yuan, X. and Yushmanov, I. and Zaccolo, V. and Zach, C. and Zampolli, C. and Zaporozhets, S. and Zarochentsev, A. and Závada, P. and Zaviyalov, N. and Zbroszczyk, H. and Zelnicek, P. and Zgura, I.S. and Zhalov, M. and Zhang, X. and Zhang, H. and Zhou, F. and Zhou, Y. and Zhou, D. and Zhu, J. and Zhu, J. and Zhu, X. and Zhu, H. and Zichichi, A. and Zimmermann, A. and Zinovjev, G. and Zoccarato, Y. and Zynovyev, M. and Zyzak, M. and ALICE Collaboration",
    journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
    year = "2013",
    volume = "723",
    number = "4-5",
    pages = "267-279",
    publisher = "Elsevier",
    doi = "10.1016/j.physletb.2013.05.039",
    abstract = "In high-energy heavy-ion collisions, the correlations between the emitted particles can be used as a probe to gain insight into the charge creation mechanisms. In this Letter, we report the first results of such studies using the electric charge balance function in the relative pseudorapidity (d?) and azimuthal angle (df) in Pb-Pb collisions at sNN=2.76 TeV with the ALICE detector at the Large Hadron Collider. The width of the balance function decreases with growing centrality (i.e. for more central collisions) in both projections. This centrality dependence is not reproduced by HIJING, while AMPT, a model which incorporates strings and parton rescattering, exhibits qualitative agreement with the measured correlations in df but fails to describe the correlations in d?. A thermal blast-wave model incorporating local charge conservation and tuned to describe the pTspectra and v2measurements reported by ALICE, is used to fit the centrality dependence of the width of the balance function and to extract the average separation of balancing charges at freeze-out. The comparison of our results with measurements at lower energies reveals an ordering with sNN: the balance functions become narrower with increasing energy for all centralities. This is consistent with the effect of larger radial flow at the LHC energies but also with the late stage creation scenario of balancing charges. However, the relative decrease of the balance function widths in d? and df with centrality from the highest SPS to the LHC energy exhibits only small differences. This observation cannot be interpreted solely within the framework where the majority of the charge is produced at a later stage in the evolution of the heavy-ion collision. © 2013 CERN."
}