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  1. Article

    Open Access

    Measurement of prompt J/ψ pair production in pp collisions at \( \sqrt{s} \) = 7 Tev

    Production of prompt J/ψ meson pairs in proton-proton collisions at ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2014)

  2. Article

    Open Access

    Study of hadronic event-shape variables in multijet final states in pp collisions at \( \sqrt{s} = 7 \) TeV

    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 ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2014)

  3. Article

    Open Access

    Erratum: Search for the associated production of the Higgs boson with a top-quark pair

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2014)

  4. Article

    Open Access

    Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions

    A search for neutral Higgs bosons in the minimal supersymmetric extension of the standard model (MSSM) decaying to tau-lepton pairs in pp collisions is performed, using events recorded by the CMS experiment at...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2014)

  5. Article

    Open Access

    Search for standard model production of four top quarks in the lepton + jets channel in pp collisions at \( \sqrt{s}=8 \) TeV

    A search is presented for standard model (SM) production of four top quarks ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2014)

  6. Article

    Open Access

    Identification techniques for highly boosted W bosons that decay into hadrons

    In searches for new physics in the energy regime of the LHC, it is becoming increasingly important to distinguish single-jet objects that originate from the merging of the decay products of W bosons produced w...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2014)

  7. Article

    Open Access

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

    S. Chatrchyan, V. Khachatryan, A. M. Sirunyan in Journal of High Energy Physics (2015)

  8. Article

    Open Access

    Measurement of the W boson helicity in events with a single reconstructed top quark in pp collisions at \( \sqrt{s}=8 \) TeV

    A measurement of the W boson helicity is presented, where the W boson originates from the decay of a top quark produced in pp collisions. The event selection, optimized for reconstructing a single top quark in...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  9. Article

    Open Access

    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

    The ratio of the production cross sections times branching fractions ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  10. Article

    Open Access

    Search for disappearing tracks in proton-proton collisions at \( \sqrt{s}=8 \) TeV

    A search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. Disappearing tracks are identified as those with little or no associ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  11. Article

    Open Access

    Study of Z production in PbPb and pp collisions at \( \sqrt{s_{\mathrm{NN}}}=2.76 \) TeV in the dimuon and dielectron decay channels

    The production of Z bosons is studied in the dimuon and dielectron decay channels in PbPb and pp collisions at ...

    S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, W. Adam in Journal of High Energy Physics (2015)

  12. Article

    Open Access

    Search for physics beyond the standard model in dilepton mass spectra in proton-proton collisions at \( \sqrt{s}=8 \) TeV

    Dimuon and dielectron mass spectra, obtained from data resulting from proton-proton collisions at 8 TeV and recorded by the CMS experiment, are used to search for both narrow resonances and broad deviations fr...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  13. Article

    Open Access

    Search for physics beyond the standard model in events with two leptons, jets, and missing transverse momentum in pp collisions at \( \sqrt{s} \) = 8 TeV

    A search is presented for physics beyond the standard model in final states with two opposite-sign same-flavor leptons, jets, and missing transverse momentum. The data sample corresponds to an integrated lumin...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  14. Article

    Open Access

    Measurement of the Zγ production cross section in pp collisions at 8 TeV and search for anomalous triple gauge boson couplings

    The cross section for the production of Zγ in proton-proton collisions at 8 TeV is measured based on data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 19.5 fb−1. Events ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  15. Article

    Open Access

    Searches for supersymmetry using the M T2 variable in hadronic events produced in pp collisions at 8 TeV

    Searches for supersymmetry (SUSY) are performed using a sample of hadronic events produced in 8 TeV pp collisions at the CERN LHC. The searches are based on the M T2 variable, which is a measure o...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  16. Article

    Open Access

    Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure

    A search is performed for a vector-like heavy T quark that is produced in pairs and that decays to a top quark and a Higgs boson. The data analysed correspond to an integrated luminosity of 19.7 fb−1 collected wi...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  17. Article

    Open Access

    Searches for third-generation squark production in fully hadronic final states in proton-proton collisions at \( \sqrt{s}=8 \) TeV

    Searches for third-generation squarks in fully hadronic final states are presented using data samples corresponding to integrated luminosities of 19.4 or 19.7 fb−1, collected at a centre-of-mass energy of 8 TeV w...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  18. Article

    Open Access

    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 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 ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  19. Article

    Open Access

    Search for third-generation scalar leptoquarks in the tτ channel in proton-proton collisions at \( \sqrt{s}=8 \) TeV

    A search for pair production of third-generation scalar leptoquarks decaying to top quark and τ lepton pairs is presented using proton-proton collision data at a center-of-mass energy of

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

  20. Article

    Open Access

    Measurement of the underlying event activity using charged-particle jets in proton-proton collisions at \( \sqrt{s}=2.76 \) TeV

    A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (|η ...

    V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2015)

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