S. Bansal

Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton-proton collisions at sqrt(s) = 8 TeV

A bstractA search is presented for particle dark matter produced in association with a pair of top quarks in pp collisions at a centre-of-mass energy of s=8

Measurement of the differential cross section for top quark pair production in pp collisions at ?s=8 TeV

\sqrt{s}=8

Study of W boson production in pPb collisions at \sqrt{s_{NN}} = 5.02 TeV

TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 19.7 fb−1. This search requires the presence of one lepton, multiple jets, and large missing transverse energy. No excess of events is found above the SM expectation, and upper limits are derived on the production cross section. Interpreting the findings in the context of a scalar contact interaction between fermionic dark matter particles and top quarks, lower limits on the interaction scale are set. These limits are also interpreted in terms of the dark matter-nucleon scattering cross sections for the spin-independent scalar operator and they complement direct searches for dark matter particles in the low mass region.

Measurement of the cross section ratio \sigma_{t\bar{t}b\bar{b}}/\sigma_{t\bar{t}jj} in pp collisions \sqrt{s}=8 TeV

A bstractThe first measurement of the electroweak production cross section of a Z boson with two jets (Zjj) in pp collisions at

Measurement of the ratio of the production cross sections times branching fractions of B_{c}^{\pm}\rightarrow J/\psi\pi^{\pm} and B^{\pm}\rightarrow J/\psi K^{\pm} and B(B_{c}^{\pm}\rightarrow J/\psi\pi^{\pm}\pi^{\pm}\pi^{\mp})/B(B_{c}^{\pm}\rightarrow J/\psi\pi^{\pm}) in pp collisions at \sqrt{s} =7 Tev

\sqrt{s}=7

Erratum to: Search for new physics in events with same-sign dileptons and jets in pp collisions at \( \sqrt{s} \) = 8 TeV

TeV is presented, based on a data sample recorded by the CMS experiment at the LHC with an integrated luminosity of 5 fb−1. The cross section is measured for the ℓℓjj (ℓ = e, μ) final state in the kinematic region mℓℓ> 50 GeV, mjj> 120 GeV, transverse momenta

Measurement of the ratio of the production cross sections times branching fractions of B c ± → J/ψπ ± and B± → J/ψK ± and \( \mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{\pm}\to \mathrm{J}/\psi {\pi}^{\pm }{\pi}^{\pm }{\pi}^{\mp}\right)/\mathrm{\mathcal{B}}\left({\mathrm{B}}_{\mathrm{c}}^{\pm}\to \mathrm{J}/\psi {\pi}^{\pm}\right) \) in pp collisions at \( \sqrt{s}=7 \) TeV

p_{\mathrm{T}}^{\mathrm{j}}>25

Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions \sqrt{s}= =8TeV

GeV and pseudorapidity |ηj| < 4.0. The measurement, combining the muon and electron channels, yields σ = 154 ± 24 (stat.) ± 46 (exp. syst.) ± 27 (th. syst.) ± 3 (lum.) fb, in agreement with the theoretical cross section. The hadronic activity, in the rapidity interval between the jets, is also measured. These results establish an important foundation for the more general study of vector boson fusion processes, of relevance for Higgs boson searches and for measurements of electroweak gauge couplings and vector boson scattering.