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CERN Document Server Znaleziono 600 rekordów  poprzedni11 - 20następnykoniec  skocz do rekordu: Szukanie trwało 1.30 sekund. 
11.
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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12.
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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13.
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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14.
Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb$^{-1}$ of proton-proton collision data at $\sqrt{s} = 13$ TeV / ATLAS Collaboration
A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb$^{-1}$ of proton-proton collisions at $\sqrt{s} = 13$ TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. [...]
arXiv:1902.01636; CERN-EP-2018-339.- Geneva : CERN, 2019-05-28 - 34 p. - Published in : Phys. Rev. D 99 (2019) 092007 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
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15.
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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16.
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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17.
Measurement of the $t\bar{t}Z$ and $t\bar{t}W$ cross sections in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A measurement of the associated production of a top-quark pair ($t\bar{t}$) with a vector boson ($W$, $Z$) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using $36.1$ fb$^{-1}$ of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. [...]
arXiv:1901.03584; CERN-EP-2018-331.- Geneva : CERN, 2019-04-30 - 38 p. - Published in : Phys. Rev. D 99 (2019) 072009 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
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18.
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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19.
Observation of electroweak $W^{\pm}Z$ boson pair production in association with two jets in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
An observation of electroweak $W^{\pm}Z$ production in association with two jets in proton-proton collisions is presented. The data collected by the ATLAS detector at the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of $\sqrt{s} =$ 13 TeV are used, corresponding to an integrated luminosity of 36.1 fb$^{-1}$. [...]
arXiv:1812.09740; CERN-EP-2018-286.- Geneva : CERN, 2019-06-10 - 42 p. - Published in : Phys. Lett. B 793 (2019) 469-492 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
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20.
Search for large missing transverse momentum in association with one top-quark in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This paper describes a search for events with one top-quark and large missing transverse momentum in the final state. Data collected during 2015 and 2016 by the ATLAS experiment from 13 TeV proton-proton collisions at the LHC corresponding to an integrated luminosity of 36.1 fb$^{-1}$ are used. [...]
arXiv:1812.09743; CERN-EP-2018-301.- Geneva : CERN, 2019-05-07 - 50 p. - Published in : JHEP 05 (2019) 041 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Previous draft version
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CERN Document Server : Znaleziono 600 rekordów   poprzedni11 - 20następnykoniec  skocz do rekordu:
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