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Inclusive b-hadron production cross section with muons in pp collisions at \( \sqrt {s} = 7\;{\text{TeV}} \)

. Khachatryan, A.M. Sirunyan, A. Tumasyan 2 , D. Polic, I. Puljak 3 Technical University of Split , Split, Croatia N. Godinovic, D. Lelas, K. Lelas, R. Plestina 4 University of Soa , Soa, Bulgaria M. Dyulendarova

Measurement of \( {\text{B}}\overline {\text{B}} \) angular correlations based on secondary vertex reconstruction at \( \sqrt {s} = 7\,{\text{TeV}} \)

. Author list Yerevan Physics Institute, Yerevan, Armenia V. Khachatryan, A.M. Sirunyan, A. Tumasyan National Centre for Particle and High Energy Physics, Minsk, Belarus V. Mossolov, N. Shumeiko, J

Measurements of inclusive W and Z cross sections in pp collisions at \( \sqrt {s} = 7 \) TeV

. Khachatryan, A.M. Sirunyan, A. Tumasyan Institut ufr Hochenergiephysik der OeAW, Wien, Austria W. Adam, T. Bergauer, M. Dragicevic, J. Eor, C. Fabjan, M. Friedl, R. Furhwirth, V.M. Ghete, J. Hammer1, S. Hansel

Charged particle multiplicities in pp interactions at \( \sqrt {s} = 0.9 \) , 2.36, and 7 TeV

, Armenia V. Khachatryan, A.M. Sirunyan, A. Tumasyan National Centre for Particle and High Energy Physics, Minsk, Belarus V. Mossolov, N. Shumeiko, J. Suarez Gonzalez Universiteit Antwerpen, Antwerpen

CMS tracking performance results from early LHC operation

The first LHC pp collisions at centre-of-mass energies of 0.9 and 2.36 TeV were recorded by the CMS detector in December 2009. The trajectories of charged particles produced in the collisions were reconstructed using the all-silicon Tracker and their momenta were measured in the 3.8 T axial magnetic field. Results from the Tracker commissioning are presented including studies of...

First measurement of the underlying event activity at the LHC with \(\sqrt{s} = 0.9\) TeV

A measurement of the underlying activity in scattering processes with p T scale in the GeV region is performed in proton–proton collisions at \(\sqrt{s} = 0.9\) TeV, using data collected by the CMS experiment at the LHC. Charged particle production is studied with reference to the direction of a leading object, either a charged particle or a set of charged particles forming a jet...

Observation of long-range, near-side angular correlations in proton-proton collisions at the LHC

medium, provided the original author(s) and source are credited. Yerevan Physics Institute, Yerevan, Armenia V. Khachatryan, A.M. Sirunyan, A. Tumasyan Institut ufr Hochenergiephysik der OeAW, Wien