Khachatryan, V.Sirunyan, A. M.Tumasyan, A.Choudhury, R. K.Dutta, D.Kailas, S.Kataria, S. K.Mohanty, A. K.Pant, L. M.Shukla, P.Suggisetti, P.2011-06-162011-06-162010European Physical Journal-C. Vol. 70 (4): pp. 1165-1192http://hdl.handle.net/123456789/48753853 bytestext/htmlenCMS tracking performanceLHC operationLHC pp collisionsnuclear interactionsphoton conversionsArticle