S. Sagir
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View article: Study of particle acceleration by Laguerre–Gaussian ultra intense laser plasma interactions
Study of particle acceleration by Laguerre–Gaussian ultra intense laser plasma interactions Open
In this work, simulations of multi-petawatt lasers in the range of ∼0.2 PW–∼100 PW with varying Laguerre–Gaussian (LG) azimuthal modes as well as linearly polarized (LP) and circularly polarized (CP) laser beams striking near critical dens…
View article: Measurement of double-parton scattering in inclusive production of four jets with low transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Measurement of double-parton scattering in inclusive production of four jets with low transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV Open
A measurement of inclusive four-jet production in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The transverse momenta of jets within |η| < 4.7 are required to exceed 35, 30, 25, and 20 GeV for the first-, sec…
View article: Plasma scale length and quantum electrodynamics effects on particle acceleration at extreme laser plasmas
Plasma scale length and quantum electrodynamics effects on particle acceleration at extreme laser plasmas Open
In this work, simulations of multipetawatt lasers at irradiances ${\sim }10^{23} \ \mathrm {W}\ \mathrm {cm}^{-2}$ , striking solid targets and implementing two-dimensional particle-in-cell code was used to study particle acceleration. Pre…
View article: Observation of $\mathrm{B^{0}_{s}}$ mesons and measurement of the $\mathrm{B^{0}_{s}}/\mathrm{B^{+}}$ yield ratio in PbPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV
Observation of $\mathrm{B^{0}_{s}}$ mesons and measurement of the $\mathrm{B^{0}_{s}}/\mathrm{B^{+}}$ yield ratio in PbPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV Open
The $\\mathrm{B^{0}_{s}}$ and $\\mathrm{B^{+}}$ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integ…
View article: Measurement of the inclusive and differential $\mathrm{t\bar{t}}\gamma$ cross sections in the single-lepton channel and EFT interpretation at $\sqrt{s} = $ 13 TeV
Measurement of the inclusive and differential $\mathrm{t\bar{t}}\gamma$ cross sections in the single-lepton channel and EFT interpretation at $\sqrt{s} = $ 13 TeV Open
The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The data set, corresponding to an integrated luminosity of 137 fb$^{-1}$, was recor…
View article: Measurements of the ${\mathrm{p}}{\mathrm{p}}\to\mathrm{W^{\pm}}\gamma\gamma$ and ${\mathrm{p}}{\mathrm{p}}\to\mathrm{Z}\gamma\gamma$ cross sections at $\sqrt s = $ 13 TeV and limits on anomalous quartic gauge couplings
Measurements of the ${\mathrm{p}}{\mathrm{p}}\to\mathrm{W^{\pm}}\gamma\gamma$ and ${\mathrm{p}}{\mathrm{p}}\to\mathrm{Z}\gamma\gamma$ cross sections at $\sqrt s = $ 13 TeV and limits on anomalous quartic gauge couplings Open
The cross section for W or Z boson production in association with two photons is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data set corresponds to an integrated luminosity of 137 fb$^{-1}$ collected by …
View article: Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at $\sqrt{s}$ = 13 TeV
Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at $\sqrt{s}$ = 13 TeV Open
A measurement of the top quark mass is performed using a data sample enriched with single top quark events produced in the $t$ channel. The study is based on proton-proton collision data, corresponding to an integrated luminosity of 35.9 f…
View article: Search for long-lived particles produced in association with a Z boson in proton-proton collisions at $ \sqrt{s} $ = 13 TeV
Search for long-lived particles produced in association with a Z boson in proton-proton collisions at $ \sqrt{s} $ = 13 TeV Open
A search for long-lived particles (LLPs) produced in association with a Z boson is presented. The study is performed using data from proton-proton collisions with a center-of-mass energy of 13 TeV recorded by the CMS experiment during 2016…
View article: Measurement of differential $\text{t}\overline{\text{t}}$ production cross sections in the full kinematic range using lepton+jets events from proton-proton collisions at $\sqrt{s} = $ 13 TeV
Measurement of differential $\text{t}\overline{\text{t}}$ production cross sections in the full kinematic range using lepton+jets events from proton-proton collisions at $\sqrt{s} = $ 13 TeV Open
Measurements of differential and double-differential cross sections of top quark pair ($\text{t}\overline{\text{t}}$) production are presented in the lepton+jets channels with a single electron or muon and jets in the final state. The anal…
View article: Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at $\sqrt{s}$ = 13 TeV
Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at $\sqrt{s}$ = 13 TeV Open
The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb$^{-1}$ of data collected with the CMS detector at t…
View article: Search for strong electric fields in PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV using azimuthal anisotropy of prompt $\mathrm{D}^0$ and $\overline{\mathrm{D}}^0$ mesons
Search for strong electric fields in PbPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV using azimuthal anisotropy of prompt $\mathrm{D}^0$ and $\overline{\mathrm{D}}^0$ mesons Open
The strong Coulomb field created in ultrarelativistic heavy ion collisions is expected to produce a rapidity-dependent difference ($\Delta v_2$) in the second Fourier coefficient of the azimuthal distribution (elliptic flow, $v_2$) between…
View article: Strange hadron production in pp and pPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV
Strange hadron production in pp and pPb collisions at ${\sqrt {\smash [b]{s_{_{\mathrm {NN}}}}}} = $ 5.02 TeV Open
The transverse momentum (${p_{\\mathrm{T}}}$) distributions of $\\Lambda$, $ \\Xi^{-}$, and $\\Omega^{-}$ baryons, their antiparticles, and ${\\mathrm{K^0_S}}$ mesons are measured in proton-proton (pp) and proton-lead (pPb) collisions at a…
View article: Study of J/$\psi$ meson production inside jets in pp collisions at $\sqrt{s} =$ 8 TeV
Study of J/$\psi$ meson production inside jets in pp collisions at $\sqrt{s} =$ 8 TeV Open
A study of the production of prompt J/ψ mesons contained in jets in proton-proton collisions at s=8TeV is presented. The analysis is based on data corresponding to an integrated luminosity of 19.1 fb −1 collected with the CMS detector at t…
View article: Search for $\mathrm{t\overline{t}}H$ production in the $H\to\mathrm{b\overline{b}}$ decay channel with leptonic $\mathrm{t\overline{t}}$ decays in proton-proton collisions at $\sqrt{s}=$ 13 TeV
Search for $\mathrm{t\overline{t}}H$ production in the $H\to\mathrm{b\overline{b}}$ decay channel with leptonic $\mathrm{t\overline{t}}$ decays in proton-proton collisions at $\sqrt{s}=$ 13 TeV Open
A search is presented for the associated production of a standard model Higgs boson with a top quark-antiquark pair ($\mathrm{t\overline{t}}$H), in which the Higgs boson decays into a b quark-antiquark pair, in proton-proton collisions at …
View article: Comparing transverse momentum balance of b jet pairs in pp and PbPb collisions at $\\sqrt{s_\\mathrm{NN}} =$ 5.02 TeVC
Comparing transverse momentum balance of b jet pairs in pp and PbPb collisions at $\\sqrt{s_\\mathrm{NN}} =$ 5.02 TeVC Open
The transverse momentum balance of pairs of back-to-back b quark jets in PbPb and pp collisions recorded with the CMS detector at the LHC is reported. The center-of-mass energy in both collision systems is 5.02 TeV per nucleon pair. Compar…
View article: Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at $\sqrt{s} =$ 8 and 13 TeV
Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at $\sqrt{s} =$ 8 and 13 TeV Open
A search for resonances in the mass range 12–70 GeV produced in association with a b quark jet and a second jet, and decaying to a muon pair, is reported. The analysis is based on data from proton-proton collisions at center-of-mass energi…
View article: Search for higgsino pair production in pp collisions at $\\sqrt{s}$ = 13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via $\\mathrm{H} \\to\\mathrm{b}\\overline{\\mathrm{b}}$
Search for higgsino pair production in pp collisions at $\\sqrt{s}$ = 13 TeV in final states with large missing transverse momentum and two Higgs bosons decaying via $\\mathrm{H} \\to\\mathrm{b}\\overline{\\mathrm{b}}$ Open
Results are reported from a search for new physics in 13 TeV proton-proton collisions in the final state with large missing transverse momentum and two Higgs bosons decaying via $\\mathrm{H} \\to\\mathrm{b}\\overline{\\mathrm{b}}$. The sea…
View article: A search for Higgs boson pair production in the bbtautau final state in proton-proton collisions at sqrt(s) = 8 TeV
A search for Higgs boson pair production in the bbtautau final state in proton-proton collisions at sqrt(s) = 8 TeV Open
Results are presented from a search for production of Higgs boson pairs (HH) where one boson decays to a pair of b quarks and the other to a $\\tau$ lepton pair. This work is based on proton-proton collision data collected by the CMS exper…
View article: Measurement of differential cross sections in the $\phi^*$ variable for inclusive Z boson production in pp collisions at $\sqrt{s}=$ 8 TeV
Measurement of differential cross sections in the $\phi^*$ variable for inclusive Z boson production in pp collisions at $\sqrt{s}=$ 8 TeV Open
Measurements of differential cross sections d$\sigma$/d$\phi^*$ and double-differential cross sections d$^2\sigma$/d$\phi^*\,$d$|y|$ for inclusive Z boson production are presented using the dielectron and dimuon final states. The kinematic…
View article: Study of Bose-Einstein correlations in pp, pPb, and PbPb collisions at the LHC
Study of Bose-Einstein correlations in pp, pPb, and PbPb collisions at the LHC Open
Quantum statistical (Bose-Einstein) two-particle correlations are measured in pp collisions at $\sqrt{s}=$ 0.9, 2.76, and 7 TeV, as well as in pPb and peripheral PbPb collisions at nucleon-nucleon center-of-mass energies of 5.02 and 2.76 T…
View article: Measurements of the $\mathrm{ pp \to W \gamma\gamma }$ and $\mathrm{ pp \to Z \gamma\gamma }$ cross sections and limits on anomalous quartic gauge couplings at $\sqrt{s} =$ 8 TeV
Measurements of the $\mathrm{ pp \to W \gamma\gamma }$ and $\mathrm{ pp \to Z \gamma\gamma }$ cross sections and limits on anomalous quartic gauge couplings at $\sqrt{s} =$ 8 TeV Open
Measurements are presented of $ \mathrm{ W \gamma\gamma } $ and $ \mathrm{ Z \gamma\gamma } $ production in proton-proton collisions. Fiducial cross sections are reported based on a data sample corresponding to an integrated luminosity of …
View article: Measurement of inclusive jet cross sections in $pp$ and PbPb collisions at $\sqrt[]{s_{NN}}$ = 2.76 TeV
Measurement of inclusive jet cross sections in $pp$ and PbPb collisions at $\sqrt[]{s_{NN}}$ = 2.76 TeV Open
Inclusive jet spectra from pp and PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV, collected with the CMS detector at the LHC, are presented. Jets are reconstructed with three different distance parameters for transv…
View article: Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at sqrt(s[NN]) = 2.76 TeV
Decomposing transverse momentum balance contributions for quenched jets in PbPb collisions at sqrt(s[NN]) = 2.76 TeV Open
Interactions between jets and the quark-gluon plasma produced in heavy ion collisions are studied via the angular distributions of summed charged-particle transverse momenta (pt) with respect to both the leading and subleading jet axes in …
View article: Correlations between jets and charged particles in PbPb and pp collisions at sqrt(s[NN])= 2.76 TeV
Correlations between jets and charged particles in PbPb and pp collisions at sqrt(s[NN])= 2.76 TeV Open
The quark-gluon plasma is studied via medium-induced changes to correlations between jets and charged particles in PbPb collisions compared to pp reference data. This analysis uses data sets from PbPb and pp collisions with integrated lumi…