[PDF] Top 20 A study of the Z production cross section in pp collisions at √s=7 TeV using tau final states

... This analysis uses data, corresponding to an integrated luminosity of 1028 ± 36 pb −1 , taken at a centre-of-mass energy of 7 TeV. The absolute luminosity scale was measured periodically throughout the data ... See full document

... these states is the first step to- wards the study of recently discovered new states in the b b ¯ system ...Υ production was studied by several experiments in the past, the underlying ... See full document

... clustering algorithm [35,36] with a size parameter R of 0.5. The energy of photons is obtained from the ECAL measure- ment. The energy of electrons is determined from a combina- tion of the electron momentum at the ... See full document

... A. Krasznahorkay 108 , J. Kraus 88 , A. Kreisel 153 , F. Krejci 127 , J. Kretzschmar 73 , N. Krieger 54 , P. Krieger 158 , K. Kroeninger 54 , H. Kroha 99 , J. Kroll 120 , J. Kroseberg 20 , J. Krstic 12a , U. Kruchonak 65 ... See full document

... di-jet final states, which can be directly studied in collision data by requiring both photon candidates to be NONTIGHT , and is taken into ac- count in the jet background estimation ... See full document

... jet production in association with W þ W due to initial state radiation, radiation from the internal line in the t -channel diagram, and additional parton collisions in the same pp ...of Z ! ... See full document

... jet production in association with W þ W due to initial state radiation, radiation from the internal line in the t -channel diagram, and additional parton collisions in the same pp ...of Z ! ... See full document

... the final-state particles of the signal decay, obtained from MC simulation, and ε B + , ε B − are the reconstruction efficiencies for the B ± signal ...interaction cross-sections of K + and K − with the ... See full document

... in pp collisions: the so-called hard regime at high trans- verse momenta, which can be described by perturbative QCD; and the soft regime, which is described by phenomenological mod- ...in pp ... See full document

... ¯ cross section measurements by LHCb σ (pp → b bX) ¯ = 284 ± ...6 using decays to D 0 μ − νX final states [16], and σ (pp → b bX) ¯ = 288 ± ...evaluated using J /ψ ... See full document

... Acknowledgements We thank CERN for the very successful oper- ation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowl- edge the support of ... See full document

... BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW and NCN, ... See full document

... from pp collisions in the LHC at a centre-of-mass energy of 7 TeV be- tween March and August ...large cross section for multi-jet production the background from jets ... See full document

... the study of particles containing b or c ...the pp interaction region, a large-area silicon-strip de- tector (TT) located upstream of a dipole magnet with a bending power of about 4 Tm, and three stations ... See full document

... M. King 170 , J. Kirk 133 , A.E. Kiryunin 103 , T. Kishimoto 157 , D. Kisielewska 41a , F. Kiss 51 , K. Kiuchi 164 , O. Kivernyk 138 , E. Kladiva 146b , M.H. Klein 38 , M. Klein 77 , U. Klein 77 , K. Kleinknecht 86 , P. ... See full document

... Υ(1S) cross-section in bins of rapidity is shown, compared to LO and NLO ...photon-proton cross-sections extracted from the LHCb results are indicated by black points, where the statistical and ... See full document

... T.M. Bristow 49 , D. Britton 56 , D. Britzger 45 , F.M. Brochu 30 , I. Brock 23 , R. Brock 93 , G. Brooijmans 38 , T. Brooks 80 , W.K. Brooks 34b , J. Brosamer 16 , E. Brost 110 , J.H Broughton 19 , P.A. Bruckman de ... See full document

... boson production in the forward region are sensitive to parton distribution functions (PDFs) at low Bjorken-x which are not particularly well constrained by previous results ...and Z boson 1 ... See full document

... analysis using 14 independent components fully correlated in p jet T [40, ...the final cross section by varying the energy resolution of the simulated ...measured cross sections by ... See full document

... S. Benson 39 , J. Benton 47 , A. Berezhnoy 33 , R. Bernet 41 , A. Bertolin 23 , F. Betti 15 , M.-O. Bettler 39 , M. van Beuzekom 42 , I. Bezshyiko 41 , S. Bifani 46 , P. Billoir 8 , T. Bird 55 , A. ... See full document