Search

Now showing items 31-40 of 41

Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons

Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Bergauer, Thomas (2014-05)

A search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 ...

Measurement of jet fragmentation in PbPb and pp collisions at s NN =2.76 TeV

Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-08-18)

The jet fragmentation function of inclusive jets with transverse momentum pT above 100GeV/c in PbPb collisions has been measured using reconstructed charged particles with pT above 1GeV/c in a cone of radius 0.3 around the ...

Search for new physics in events with same-sign dileptons and jets in pp collisions at √s = 8 TeV

Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X. (2014-01-29)

A search for new physics is performed based on events with jets and a pair of isolated, same-sign leptons. The results are obtained using a sample of proton-proton collision data collected by the CMS experiment at a ...

Searches for heavy Higgs bosons in two-Higgs-doublet models and for t→ch decay using multilepton and diphoton final states in pp collisions at 8 TeV

Khachatryan, Vardan; Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko (2014-12-23)

Searches are presented for heavy scalar (H) and pseudoscalar (A) Higgs bosons posited in the two doublet model (2HDM) extensions of the standard model (SM). These searches are based on a data sample of pp collisions collected ...

Search for flavor-changing neutral currents in top-quark decays t →zq in pp collisions at s =8TeV

Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X. (2014-05-02)

A search for flavor-changing neutral currents in top-quark decays t→Zq is performed in events produced from the decay chain tt̄→Zq+Wb, where both vector bosons decay leptonically, producing a final state with three leptons ...

Study of double parton scattering using W + 2-jet events in proton-proton collisions at √s = 7 TeV

Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X. (2014-03-05)

Double parton scattering is investigated in proton-proton collisions at s√ = 7 TeV where the final state includes a W boson, which decays into a muon and a neutrino, and two jets. The data sample corresponds to an integrated ...

Measurement of the production cross sections for a Z boson and one or more b jets in pp collisions at √s = 7 TeV

Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-06-12)

The production of a Z boson, decaying into two leptons and produced in association with one or more b jets, is studied using proton-proton collisions delivered by the LHC at a centre-of-mass energy of 7 TeV. The data were ...

Observation of the associated production of a single top quark -and a W boson in pp collisions at s =8TeV

Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-06-09)

The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2fb-1 of proton-proton collisions at ...

Study of hadronic event-shape variables in multijet final states in pp collisions at √s = 7TeV

Baarmand, Marc M.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Khachatryan, Vardan; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang; Bergauer, Thomas; Dragicevic, Marko (2014-10-14)

Event-shape variables, which are sensitive to perturbative and nonperturbative aspects of quantum chromodynamic (QCD) interactions, are studied in multijet events recorded in proton-proton collisions at √s = 7 TeV. Events ...

Measurement of higher-order harmonic azimuthal anisotropy in PbPb collisions at s NN =2.76 TeV

Baarmand, Marc M.; Dorney, B.; Hohlmann, Marcus; Kalakhety, H.; Yumiceva, Francisco X.; Chatrchyan, S. A.; Khachatryan, Vladimir A.; Sirunyan, A. M.; Tumasyan, A. R.; Adam, Wolfgang (2014-04-11)

Measurements are presented by the CMS Collaboration at the Large Hadron Collider (LHC) of the higher-order harmonic coefficients that describe the azimuthal anisotropy of charged particles emitted in sNN=2.76 TeV PbPb ...