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CERN Document Server 809 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 0.64 sekúnd. 
1.
Determination of jet calibration and energy resolution in proton-proton collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector / ATLAS Collaboration
The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton-proton data produced at a centre-of-mass energy of 8 TeV with an integrated luminosity of 20 fb$^{-1}$. Jets are reconstructed from clusters of energy depositions in the ATLAS calorimeters using the anti-$k_t$ algorithm. [...]
arXiv:1910.04482; CERN-EP-2019-057.- Geneva : CERN, 2020 - 81 p. - Published in : Eur. Phys. J. C 80 (2020) 1104 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Previous draft version
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2.
Observation of electroweak production of a same-sign $W$ boson pair in association with two jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This Letter presents the observation and measurement of electroweak production of a same-sign $W$ boson pair in association with two jets using 36.1 fb$^{-1}$ of proton-proton collision data recorded at a center-of-mass energy of $\sqrt{s}=13$ TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed in the detector fiducial phase-space region, defined by the presence of two same-sign leptons, electron or muon, and at least two jets with a large invariant mass and rapidity difference. [...]
arXiv:1906.03203; CERN-EP-2019-008.- 2019-10-16 - 21 p. - Published in : Phys. Rev. Lett. 123 (2019) 161801 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
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3.
Search for heavy particles decaying into a top-quark pair in the fully hadronic final state in $pp$ collisions at $\sqrt{s} =13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for new particles decaying into a pair of top quarks is performed using proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at a center-of-mass energy of $\sqrt{s} = $13 TeV corresponding to an integrated luminosity of 36.1 fb$^{-1}$. Events consistent with top-quark pair production and the fully hadronic decay mode of the top quarks are selected by requiring multiple high transverse momentum jets including those containing $b$-hadrons. [...]
arXiv:1902.10077; CERN-EP-2018-350.- Geneva : CERN, 2019-05-15 - 38 p. - Published in : Phys. Rev. D 99 (2019) 092004 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
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4.
Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from $pp$ and Pb+Pb Collisions in ATLAS / ATLAS Collaboration
Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in $25$ pb$^{-1}$ of $pp$ and $0.49$ nb$^{-1}$ of Pb+Pb collision data at $5.02$ TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. [...]
arXiv:1902.10007; CERN-EP-2019-009.- Geneva : CERN, 2019-07-23 - 21 p. - Published in : Phys. Rev. Lett. 123 (2019) 042001 Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
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5.
Measurement of the four-lepton invariant mass spectrum in 13 TeV proton-proton collisions with the ATLAS detector / ATLAS Collaboration
A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV delivered by the Large Hadron Collider. The differential cross-section is measured for events containing two same-flavour opposite-sign lepton pairs. [...]
arXiv:1902.05892; CERN-EP-2018-318.- Geneva : CERN, 2019-04-05 - 51 p. - Published in : JHEP 04 (2019) 048 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Rivet analyses reference
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6.
Measurement of $W^{\pm}Z$ production cross sections and gauge boson polarisation in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents measurements of $W^{\pm}Z$ production cross sections in $pp$ collisions at a centre-of-mass energy of 13 TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 36.1 fb$^{-1}$. [...]
arXiv:1902.05759; CERN-EP-2018-327.- Geneva : CERN, 2019-06-22 - 51 p. - Published in : Eur. Phys. J. C 79 (2019) 535 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
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7.
Electron reconstruction and identification in the ATLAS experiment using the 2015 and 2016 LHC proton-proton collision data at $\sqrt{s} = 13$ TeV / ATLAS Collaboration
Algorithms used for the reconstruction and identification of electrons in the central region of the ATLAS detector at the Large Hadron Collider (LHC) are presented in this paper; these algorithms are used in ATLAS physics analyses that involve electrons in the final state and which are based on the 2015 and 2016 proton-proton collision data produced by the LHC at $\sqrt{s} = 13$ TeV. The performance of the electron reconstruction, identification, isolation, and charge identification algorithms is evaluated in data and in simulated samples using electrons from $Z\rightarrow ee$ and $J/\psi\rightarrow ee$ decays. [...]
arXiv:1902.04655; CERN-EP-2018-273.- Geneva : CERN, 2019-08-03 - 40 p. - Published in : Eur. Phys. J. C 79 (2019) 639 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Previous draft version
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8.
Searches for scalar leptoquarks and differential cross-section measurements in dilepton-dijet events in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 13 TeV with the ATLAS experiment / ATLAS Collaboration
Searches for scalar leptoquarks pair-produced in proton-proton collisions at $\sqrt{s}=13$ TeV at the Large Hadron Collider are performed by the ATLAS experiment. A data set corresponding to an integrated luminosity of 36.1 fb$^{-1}$ is used. [...]
arXiv:1902.00377; CERN-EP-2018-262.- Geneva : CERN, 2019-09-03 - 62 p. - Published in : Eur. Phys. J. C 79 (2019) 733 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Rivet analyses reference
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9.
Search for scalar resonances decaying into $\mu^{+}\mu^{-}$ in events with and without $b$-tagged jets produced in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for a narrow scalar resonance decaying into opposite-sign muon pair produced in events with and without b-tagged jets is presented in this paper. The A search for a narrow scalar resonance decaying into an opposite-sign muon pair produced in events with and without b-tagged jets is presented in this paper. [...]
arXiv:1901.08144; CERN-EP-2018-300.- Geneva : CERN, 2019-07-19 - 41 p. - Published in : JHEP 1907 (2019) 117 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
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10.
Search for top-quark decays $t \rightarrow Hq$ with 36 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for flavour-changing neutral current decays of a top quark into an up-type quark ($q=u, c$) and the Standard Model Higgs boson, $t\rightarrow Hq$, is presented. The search is based on a dataset of $pp$ collisions at $\sqrt{s}=13$ TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider and corresponds to an integrated luminosity of 36.1 fb$^{-1}$. [...]
arXiv:1812.11568; CERN-EP-2018-295.- Geneva : CERN, 2019-05-21 - 68 p. - Published in : JHEP 05 (2019) 123 Article from SCOAP3: PDF; Fulltext: 1711770_1812.11568 - PDF_2; 1812.11568 - PDF; External links: 00017 : $\Hbb$ search: Comparison of the distributions of the LH discriminant after preselection of the $\Hc$ (red dashed) and $\Hu$ (blue dotted) signals, and the $t\bar{t}\to WbWb$ background (black solid) in different regions considered in the analysis: (a) (4j, 2b), (b) (4j, 3b), (c) (4j, 4b), (d) (5j, 2b), (e) (5j, 3b), (f) (5j, $\geq$4b), (g) ($\geq$6j, 2b), (h) ($\geq$6j, 3b), and (i) ($\geq$6j, $\geq$4b). In the regions with $\geq$4 $b$-tagged jets, the signal acceptance is small, which translates into a small number of events for the simulated samples. Therefore, only two bins are used for these distributions.; 00017 : $\Hbb$ search: Comparison of the distributions of the LH discriminant after preselection of the $\Hc$ (red dashed) and $\Hu$ (blue dotted) signals, and the $t\bar{t}\to WbWb$ background (black solid) in different regions considered in the analysis: (a) (4j, 2b), (b) (4j, 3b), (c) (4j, 4b), (d) (5j, 2b), (e) (5j, 3b), (f) (5j, $\geq$4b), (g) ($\geq$6j, 2b), (h) ($\geq$6j, 3b), and (i) ($\geq$6j, $\geq$4b). In the regions with $\geq$4 $b$-tagged jets, the signal acceptance is small, which translates into a small number of events for the simulated samples. Therefore, only two bins are used for these distributions.; 00037 :; 00037 :; 00036 \small {Summary of the best-fit $\BR(t\to Hu)$ for the individual searches as well as their combination, assuming $\BR(t\to Hc)=0$. }; 00036 \small {Summary of the best-fit $\BR(t\to Hu)$ for the individual searches as well as their combination, assuming $\BR(t\to Hc)=0$. }; 00014 \small {Summary of the best-fit $\BR(t\to Hc)$ for the individual searches as well as their combination, assuming $\BR(t\to Hu)=0$. }; 00014 \small {Summary of the best-fit $\BR(t\to Hc)$ for the individual searches as well as their combination, assuming $\BR(t\to Hu)=0$. }; 00018 :; 00018 :; 00005 :; 00005 :; 00035 : Caption not extracted; 00035 : Caption not extracted; 00039 : Caption not extracted; 00039 : Caption not extracted; 00006 :; 00006 :; 00024 :; 00024 :; 00012 : Caption not extracted; 00012 : Caption not extracted; 00023 :; 00023 :; Fulltext; Fulltext; 00033 :; 00033 :; 00004 : Caption not extracted; 00004 : Caption not extracted; 00034 : Caption not extracted; 00034 : Caption not extracted; 00007 $\Hbb$ search: Comparison between the data and predicted background for the event yields in each of the analysis regions considered before the fit to data (``Pre-Fit''). All events satisfy the preselection requirements, whereas those with exactly two $b$-tagged jets are in addition required to have a value of the likelihood discriminant above 0.6 (see Section~\ref{sec:likelihood_discriminant}). Backgrounds are normalised to their nominal cross sections. The small contributions from $W/Z$+jets, single-top-quark, diboson and multijet backgrounds are combined into a single background source referred to as ``Non-$\ttbar$''. The expected $\Hc$ and $\Hu$ signals (dashed histograms) are shown separately normalised to $\BR(t\to Hq)=1\%$. The bottom panel displays the ratio of data to the SM background (``Bkg'') prediction. The hashed area represents the total uncertainty of the background, excluding the normalisation uncertainty of the $\ttbin$ background, which is determined via a likelihood fit to data.; 00007 $\Hbb$ search: Comparison between the data and predicted background for the event yields in each of the analysis regions considered before the fit to data (``Pre-Fit''). All events satisfy the preselection requirements, whereas those with exactly two $b$-tagged jets are in addition required to have a value of the likelihood discriminant above 0.6 (see Section~\ref{sec:likelihood_discriminant}). Backgrounds are normalised to their nominal cross sections. The small contributions from $W/Z$+jets, single-top-quark, diboson and multijet backgrounds are combined into a single background source referred to as ``Non-$\ttbar$''. The expected $\Hc$ and $\Hu$ signals (dashed histograms) are shown separately normalised to $\BR(t\to Hq)=1\%$. The bottom panel displays the ratio of data to the SM background (``Bkg'') prediction. The hashed area represents the total uncertainty of the background, excluding the normalisation uncertainty of the $\ttbin$ background, which is determined via a likelihood fit to data.; 00002 :; 00002 :; 00027 : Caption not extracted; 00027 : Caption not extracted; 00020 :; 00020 :; 00003 :; 00003 :; 00015 :; 00015 :; 00010 : Caption not extracted; 00010 : Caption not extracted; 00009 :; 00009 :; 00031 : Caption not extracted; 00031 : Caption not extracted; 00021 :; 00021 :; 00022 :; 00022 :; 00008 :; 00008 :; 00019 : Caption not extracted; 00019 : Caption not extracted; 00030 :; 00030 :; 00001 : Caption not extracted; 00001 : Caption not extracted; 00029 :; 00029 :; 00038 :; 00038 :; 00025 :; 00025 :; 00026 :; 00026 :; 00028 :; 00028 :; 00032 :; 00032 :; 00000 : Caption not extracted; 00000 : Caption not extracted; 00016 : Caption not extracted; 00016 : Caption not extracted; 00013 :; 00013 :; 00011 : Caption not extracted; 00011 : Caption not extracted
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