S. Seif El Nasr-storey

Precision measurement of the structure of the CMS inner tracking system using nuclear interactions

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

The structure of the CMS inner tracking system has been studied using nuclear interactions of hadrons striking its material.Data from proton-proton collisions at a center-of-mass energy of 13 TeV recorded in 2015 at the LHC are used to reconstruct millions of secondary …

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Search for a heavy resonance decaying into a Z boson and a vector boson in the $$ \nu \overline{\nu}\mathrm{q}\overline{\mathrm{q}} $$ final state

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

Abstract A search is presented for a heavy resonance decaying into either a pair of Z bosons or a Z boson and a W boson (ZZ or WZ), with a Z boson decaying into a pair of neutrinos and the other boson …

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Measurement of the Λb polarization and angular parameters in Λb→J/ψΛ decays from pp collisions at s=7 and 8 TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

An analysis of the bottom baryon decay ${\mathrm{\ensuremath{\Lambda}}}_{b}\ensuremath{\rightarrow}J/\ensuremath{\psi}(\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}})\mathrm{\ensuremath{\Lambda}}(\ensuremath{\rightarrow}p{\ensuremath{\pi}}^{\ensuremath{-}})$ is performed to measure the ${\mathrm{\ensuremath{\Lambda}}}_{b}$ polarization and three angular parameters in data from $pp$ collisions at $\sqrt{s}=7$ and 8 TeV, collected by the CMS experiment at the Large Hadron Collider. The ${\mathrm{\ensuremath{\Lambda}}}_{b}$ polarization …

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Search for massive resonances decaying into WW , WZ , ZZ , qW , and qZ with dijet final states at s=13 TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

Results are presented from a search in the dijet final state for new massive narrow resonances decaying to pairs of $W$ and $Z$ bosons or to a $W/Z$ boson and a quark. Results are based on data recorded in proton-proton collisions at …

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Measurement of associated Z + charm production in proton–proton collisions at $$\sqrt{s} = 8$$ s = 8 $$\,\text {TeV}$$ TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

A study of the associated production of a Z boson and a charm quark jet (Z + c), and a comparison to production with a b quark jet (Z + b), in pp collisions at a centre-of-mass energy of 8 TeV are …

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Measurement of differential cross sections in the kinematic angular variable ϕ* for inclusive Z boson production in pp collisions at $$ \sqrt{s}=8 $$ TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

Abstract Measurements of differential cross sections dσ/dϕ * and double-differential cross sections d2 σ/dϕ *d|y| for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic observable ϕ * correlates with the dilepton transverse momentum but has …

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Search for the pair production of third-generation squarks with two-body decays to a bottom or charm quark and a neutralino in proton–proton collisions at s=13TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, F. Ambrogi et autres

Results are presented from a search for the pair production of third-generation squarks in proton–proton collision events with two-body decays to bottom or charm quarks and a neutralino, which produces a significant imbalance in the transverse momentum. The search is performed using …

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Measurement of the top quark mass in the dileptonic tt¯ decay channel using the mass observables Mbℓ , MT2 , and Mbℓν in pp collisions at s=8 TeV

A. M. Sirunyan, A. Tumasyan, W. Adam, E. Asilar et autres

A measurement of the top quark mass (${M}_{t}$) in the dileptonic $t\overline{t}$ decay channel is performed using data from proton-proton collisions at a center-of-mass energy of 8 TeV. The data was recorded by the CMS experiment at the LHC and corresponds to …

Measurement of the ratio B(Bs0→J/ψf0(980))/B(Bs0→J/ψϕ(1020)) in pp collisions at s=7 TeV

V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam et autres

A measurement of the ratio of the branching fractions of the B s 0 meson to J / ψ f 0 ( 980 ) and to J / ψ ϕ ( 1020 ) is presented. The J / ψ , f 0 …

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