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Schneider, Elena Malanushenko, \\'Eric Aubourg, Florian Beutler, Garrett Ebelke, Graziano Rossi, Howard Brewington, Isabelle P\\^aris, Jian Ge, Jim Rich, Joel R. Brownstein, Jon Brinkmann, Jordi Miralda-Escud\\'e, Julian Bautista, Karen Kinemuchi, Khee-Gan Lee, Kyle S. Dawson, Matteo Viel, Matthew M. Pieri, Michael Blomqvist, Moses Marchante, Nathalie Palanque-Delabrouille, Nicholas P. Ross, Nicolas Busca, Pasquier Noterdaeme, Patrick Petitjean, Stephen Bailey, Timoth\\'ee Delubac, Vaishali Bhardwaj, Viktor Malanushenko","submitted_at":"2013-11-07T17:51:27Z","abstract_excerpt":"We measure the large-scale cross-correlation of quasars with the Lyman alpha forest absorption, using over 164,000 quasars from Data Release 11 of the SDSS-III Baryon Oscillation Spectroscopic Survey. We extend the previous study of roughly 60,000 quasars from Data Release 9 to larger separations, allowing a measurement of the Baryonic Acoustic Oscillation (BAO) scale along the line of sight $c/(H(z=2.36) ~ r_s) = 9.0 \\pm 0.3$ and across the line of sight $D_A(z=2.36) / ~ r_s = 10.8 \\pm 0.4$, consistent with CMB and other BAO data. 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