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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 5 of 5 1 Measurement of single-diffractive dijet production in proton-proton collisions at $\sqrt{s} =$ 8 TeV with the CMS and TOTEM experiments Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang... In: Eur.Phys.J.C ; https://hal.archives-ouvertes.fr/hal-02507664 ; Eur.Phys.J.C, 2020, 80 (12), pp.1164. ⟨10.1140/epjc/s10052-020-08562-y⟩ (2020) BASE Show details 2 Measurement of the top quark mass with lepton+jets final states using $\mathrm {p}$ $\mathrm {p}$ collisions at $\sqrt{s}=13\,\text {TeV} $ Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang... In: http://infoscience.epfl.ch/record/275278 (2020) BASE Show details 3 When charm and beauty adjoin the top. First measurement of the cross section of top quark pair production with additional charm jets with the CMS experiment. Moortgat, Seth. - 2019 Abstract: The Standard Model (SM) of Particle Physics describes the elementary building blocks of the universe and the forces that are responsible for the interactions amongst them. The discovery of the Brout-Englert-Higgs boson at the Large Hadron Collider in 2012 marked the final milestone in completing this model as we know it today. Nevertheless, the Standard Model is not a complete theory, as it cannot explain phenomena such as dark matter, neutrino masses, and it does not include gravity. Motivated by the need for precise background estimates in the top-Higgs sector, the CMS and ATLAS Collaborations at the LHC have developed an ambitious program in measuring precisely the production of a top quark pair with additional bottom jets ($\text{t}\overline{\text{t}}\text{b}\overline{\text{b}}$). It is however of equal importance to measure also the production of a top quark pair with additional charm jets ($\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}$). Recently, the development of dedicated algorithms for charm jet identification have opened up the possibility to disentangle and measure also the $\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}$ cross section for the first time. This thesis presents the first measurement of the $\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}$ process with the CMS detector at the LHC using proton-proton collision data collected in 2017. The $\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}$ cross section ($\sigma_{\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}}$) is measured with a precision of around 20%, resulting in $\sigma_{\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}}=5.86 \pm 1.14$ pb in the full phase space. The presented analysis strategy allows for a simultaneous extraction of the $\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}$, $\text{t}\overline{\text{t}}\text{b}\overline{\text{b}}$ and $\text{t}\overline{\text{t}}$ + light jet cross sections from the information that resides in the charm-jet identification discriminants. Finally, the Standard Model Effective Field Theory framework (SMEFT) provides a model-independent way to interpret these measurements in terms of new physics interactions. A novel methodology is presented in which Machine Learning methods are used to provide more stringent constraints on the coefficients that parametrize the new physics interactions in the SMEFT. These methods are demonstrated using the results obtained from the CMS measurement of the $\text{t}\overline{\text{t}}\text{c}\overline{\text{c}}$ and $\text{t}\overline{\text{t}}\text{b}\overline{\text{b}}$ processes. Keyword: Particle Physics - Experiment; Particle Physics - Phenomenology URL: http://cds.cern.ch/record/2676133 BASE Hide details 4 Measurement of prompt and nonprompt charmonium suppression in $\text {PbPb}$ collisions at 5.02 $\,\text {Te}\text {V}$ Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang... In: Eur.Phys.J.C ; https://hal.archives-ouvertes.fr/hal-01833739 ; Eur.Phys.J.C, 2018, 78 (6), pp.509. ⟨10.1140/epjc/s10052-018-5950-6⟩ (2018) BASE Show details 5 Measurement of prompt and nonprompt charmonium suppression in $\text {PbPb}$ collisions at 5.02 $\,\text {Te}\text {V}$ Sirunyan, Albert M; Tumasyan, Armen; Adam, Wolfgang. - 2017 BASE Show details

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