Abstract
Studies of hadron production in proton-proton collisions, including charged particle transverse momentum, pseudo-rapidity and event-by-event multiplicity distributions at √ s = 0.9, 2.36 and 7 TeV are shown. Measured spectra of identified strange hadron s, reconstructed based on their de- cay topology, are also presented. Comparisons to several QCD Monte Carlo models and tunes are discussed. Results on two-particle angular correlations over a broad range of pseudo-rapidity and azimuthal angle in p-p collisions are presented at both √ s = 0.9 and 7 TeV. In high multiplicity events, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate transverse momentum of 1-3 GeV/c. Furthermore, Bose-Einstein correla- tions between identical particles are measured in samples of proton-proton collisions at √ s =0.9 and 7 TeV. Finally, a measurement of the underlying activity in scattering processes with a pT scale in the several GeV region is also presented.
Highlights
Soft quantum chromodynamics (QCD) Results from Compact Muon Solenoid (CMS)Studies of hadron production in proton-proton collisions, including charged particle transverse √
Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at
The frontier energy scale of the Large Hadron Collider (LHC) provides us a new tool to probe the physics at the new energy regime
Summary
Studies of hadron production in proton-proton collisions, including charged particle transverse √. Momentum, pseudo-rapidity and event-by-event multiplicity distributions at s = 0.9, 2.36 and 7. Measured spectra of identified strange hadrons, reconstructed based on their decay topology, are presented. Results on two-particle angular correlations over a broad range of pseudo-rapidity and azimuthal angle in p-p collisions are presented at both. A pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate transverse momentum of 1-3 GeV/c. Bose-Einstein correlations between identical particles are measured in samples of proton-proton collisions at. A measurement of the underlying activity in scattering processes with a pT scale in the several GeV region is presented.
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