# ATLAS

 2018-11-1212:34 [PUBDB-2018-04401] Preprint/Report et al Searches for exclusive Higgs and $Z$ boson decays into $J/\psi\gamma$, $\psi(2S)\gamma$, and $\Upsilon(nS)\gamma$ at $\sqrt{s}=13$ TeV with the ATLAS detector [arXiv:1807.00802; CERN-EP-2018-154]   Searches for the exclusive decays of the Higgs and $Z$ bosons into a $J/ψ , ψ(2S)$ , or $ϒ(nS) ( n=1,2,3 )$ meson and a photon are performed with a pp collision data sample corresponding to an integrated luminosity of 36.1 fb$^{−1}$ collected at $\sqrt{s}=$ 13TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above the expected backgrounds, and 95% confidence-level upper limits on the branching fractions of the Higgs boson decays to $J/ψγ , ψ(2S)γ$ , and $ϒ(nS)γ$ of $3.5×10^{−4} , 2.0 × 10^{−3}$ , and $(4.9,5.9,5.7) × 10^{−4}$ , respectively, are obtained assuming Standard Model production. [...] OpenAccess: PDF PDF (PDFA); 2018-11-1211:19 [PUBDB-2018-04388] Preprint/Report et al Search for Higgs bosons produced via vector-boson fusion and decaying into bottom quark pairs in $\sqrt{s} = 13$ $\mathrm{TeV}$ $pp$ collisions with the ATLAS detector [arXiv:1807.08639; CERN-EP-2018-140] A search for the $b\bar{b}$ decay of the Standard Model Higgs boson produced through vector-boson fusion is presented. Three mutually exclusive channels are considered: two all-hadronic channels and a photon-associated channel. [...] OpenAccess: PDF PDF (PDFA); 2018-11-1211:10 [PUBDB-2018-04384] Preprint/Report et al Prompt and non-prompt $J/\psi$ elliptic flow in Pb+Pb collisions at $\sqrt{s_{_\text {NN}}} = 5.02$ Tev with the ATLAS detector [arXiv:1807.05198; CERN-EP-2018-170]   The elliptic flow of prompt and non-prompt $J/\psi$ was measured in the dimuon decay channel in Pb+Pb collisions at $\sqrt{s_{_\text {NN}}}=5.02$   $\text {TeV}$ with an integrated luminosity of $0.42~\mathrm {nb}^{-1}$ with the ATLAS detector at the LHC. The prompt and non-prompt signals are separated using a two-dimensional simultaneous fit of the invariant mass and pseudo-proper decay time of the dimuon system from the $J/\psi$ decay. [...] OpenAccess: PDF PDF (PDFA); 2018-11-1210:12 [PUBDB-2018-04379] Preprint/Report et al Search for charged Higgs bosons decaying via $H^{\pm} \to \tau^{\pm}\nu_{\tau}$ in the $\tau$+jets and $\tau$+lepton final states with 36 fb$^{-1}$ of $pp$ collision data recorded at $\sqrt{s} = 13$ TeV with the ATLAS experiment [arXiv:1807.07915; CERN-EP-2018-148]   Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via H$^{±}$ → τ$^{±}$ν$_{τ}$, are searched for in 36.1 fb$^{−1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. Depending on whether the top-quark produced together with H$^{±}$ decays hadronically or leptonically, the search targets τ+jets and τ+lepton final states, in both cases with a hadronically decaying τ-lepton. [...] OpenAccess: PDF PDF (PDFA); 2018-11-0914:25 [PUBDB-2018-04370] Report/Journal Article et al Searches for exclusive Higgs and $Z$ boson decays into $J/\psi\gamma$, $\psi(2S)\gamma$, and $\Upsilon(nS)\gamma$ at $\sqrt{s}=13$ TeV with the ATLAS detector [arXiv:1807.00802; CERN-EP-2018-154] Physics letters / B 786, 134 - 155 (2018) [10.1016/j.physletb.2018.09.024]   Searches for the exclusive decays of the Higgs and $Z$ bosons into a $J/ψ , ψ(2S)$ , or $ϒ(nS) ( n=1,2,3 )$ meson and a photon are performed with a pp collision data sample corresponding to an integrated luminosity of 36.1 fb$^{−1}$ collected at $\sqrt{s}=$ 13TeV with the ATLAS detector at the CERN Large Hadron Collider. No significant excess of events is observed above the expected backgrounds, and 95% confidence-level upper limits on the branching fractions of the Higgs boson decays to $J/ψγ , ψ(2S)γ$ , and $ϒ(nS)γ$ of $3.5×10^{−4} , 2.0 × 10^{−3}$ , and $(4.9,5.9,5.7) × 10^{−4}$ , respectively, are obtained assuming Standard Model production. [...] OpenAccess: PDF PDF (PDFA); 2018-11-0914:23 [PUBDB-2018-04369] Report/Journal Article et al Prompt and non-prompt $J/\psi$ elliptic flow in Pb+Pb collisions at $\sqrt{s_{_\text {NN}}} = 5.02$ Tev with the ATLAS detector [arXiv:1807.05198; CERN-EP-2018-170]   The elliptic flow of prompt and non-prompt $J/\psi$ was measured in the dimuon decay channel in Pb+Pb collisions at $\sqrt{s_{_\text {NN}}}=5.02$   $\text {TeV}$ with an integrated luminosity of $0.42~\mathrm {nb}^{-1}$ with the ATLAS detector at the LHC. The prompt and non-prompt signals are separated using a two-dimensional simultaneous fit of the invariant mass and pseudo-proper decay time of the dimuon system from the $J/\psi$ decay. [...] OpenAccess: PDF PDF (PDFA); 2018-11-0914:16 [PUBDB-2018-04365] Report/Journal Article et al Search for Higgs bosons produced via vector-boson fusion and decaying into bottom quark pairs in $\sqrt{s} = 13$ $\mathrm{TeV}$ $pp$ collisions with the ATLAS detector [arXiv:1807.08639; CERN-EP-2018-140] Physical review / D 98(5), 052003 (2018) [10.1103/PhysRevD.98.052003]   A search for the $b\bar{b}$ decay of the Standard Model Higgs boson produced through vector-boson fusion is presented. Three mutually exclusive channels are considered: two all-hadronic channels and a photon-associated channel. [...] OpenAccess: PDF PDF (PDFA); 2018-11-0914:13 [PUBDB-2018-04363] Report/Journal Article et al Search for charged Higgs bosons decaying via $H^{\pm} \to \tau^{\pm}\nu_{\tau}$ in the $\tau$+jets and $\tau$+lepton final states with 36 fb$^{-1}$ of $pp$ collision data recorded at $\sqrt{s} = 13$ TeV with the ATLAS experiment [arXiv:1807.07915; CERN-EP-2018-148] Journal of high energy physics 1809(09), 139 (2018) [10.1007/JHEP09(2018)139]   Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via H$^{±}$ → τ$^{±}$ν$_{τ}$, are searched for in 36.1 fb$^{−1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV recorded with the ATLAS detector. Depending on whether the top-quark produced together with H$^{±}$ decays hadronically or leptonically, the search targets τ+jets and τ+lepton final states, in both cases with a hadronically decaying τ-lepton. [...] OpenAccess: PDF PDF (PDFA); 2018-11-0911:18 [PUBDB-2018-04357] Preprint/Report et al Search for the production of a long-lived neutral particle decaying within the ATLAS hadronic calorimeter in association with a $Z$ boson from $pp$ collisions at $\sqrt{s} = 13$ TeV [arXiv:1811.02542; CERN-EP-2018-275]   This Letter presents a search for the production of a long-lived neutral particle decaying within the ATLAS hadronic calorimeter, in association with a Standard Model $Z$ boson produced via an intermediate scalar boson, where $Z \rightarrow l^+ l^-$ ($l=e,\mu$). The data used were collected by the ATLAS detector during 2015 and 2016 $pp$ collisions with a center-of-mass energy of $\sqrt{s} = 13$ TeV at the Large Hadron Collider and corresponds to an integrated luminosity of 36.1 fb$^{-1}$. [...] OpenAccess: PDF PDF (PDFA); 2018-11-0909:51 [PUBDB-2018-04354] Preprint/Report et al The Phase-1 Upgrade for the Level-1 Muon Barrel Trigger of the ATLAS Experiment at LHC [arXiv:1806.09161]   The Level-1 Muon Barrel Trigger of the ATLAS Experiment at LHC makes use of Resistive Plate Chamber (RPC) detectors. The on-detector trigger electronics modules are able to identify muons with predefined transverse momentum values (pT) by executing a coincidence logic on signals coming from the various detector layers. [...] OpenAccess: PDF;