ATLAS

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2017-09-27
10:57
OpenAccess [PUBDB-2017-11052] Preprint/Report
; ; ; et al
Combination of inclusive and differential $\mathrm{t}\bar{\mathrm{t}}$ charge asymmetry measurements using ATLAS and CMS data at $\sqrt{s} =$ 7 and 8 TeV
[CMS-TOP-15-016; ATLAS-TOPQ-2016-16; CERN-EP-2017-236; arXiv:1709.05327]
 GO
This paper presents combinations of inclusive and differential measurements of the charge asymmetry ($A_{\mathrm{C}}$) in top quark pair ($\mathrm{t}\overline{\mathrm{t}}$) events with a lepton+jets signature by the ATLAS and CMS Collaborations, using data from LHC proton-proton collisions at centre-of-mass energies of 7 and 8 TeV corresponding to integrated luminosities of about 5 and 20 fb$^{-1}$ for each experiment, respectively. The resulting combined LHC measurements of the inclusive charge asymmetry are $A_{\mathrm{C}}^{\mathrm{LHC7}} = 0.005 \pm0.007 \text{ (stat)}\pm0.006 \text{ (syst)}$ at 7 TeV and $A_{\mathrm{C}}^{\mathrm{LHC8}} = 0.0055 \pm0.0023\text{ (stat)}\pm0.0025\text{ (syst)}$ at 8 TeV. [...]
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2017-09-11
14:49
DBCoverage [PUBDB-2017-10613] Preprint/Report
; ; ; et al
Measurement of the $k_t$ splitting scales in $Z \to \ell\ell$ events in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
[CERN-EP-2017-033; arXiv:1704.01530]
ddc:530
A measurement of the splitting scales occuring in the $k_\mathrm{t}$ jet-clustering algorithm is presented for final states containing a $Z$ boson. The measurement is done using 20.2 fb$^{-1}$ of proton-proton collision data collected at a centre-of-mass energy of $\sqrt{s} = 8$ TeV by the ATLAS experiment at the LHC in 2012. [...]
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2017-09-11
12:17
arXiv [PUBDB-2017-10593] Preprint/Report
; ; ; et al
Measurement of $WW/WZ \to \ell\nu qq^{\prime}$ production with the hadronically decaying boson reconstructed asone or two jets in $pp$ collisions at $\sqrt{s}$ = 8 TeV with ATLAS, and constraints on anomalous gauge couplings
[CERN-EP-2017-060; arXiv:1706.01702]
ddc:530
This paper presents a study of the production of $WW$ or $WZ$ boson pairs, with one $W$ boson decaying to $e\nu$ or $\mu\nu$ and one $W$ or $Z$ boson decaying hadronically. The analysis uses 20.2 fb$^{-1}$ of $\sqrt{s}=8$ TeV $pp$ collision data, collected by the ATLAS detector at the Large Hadron Collider. [...]
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2017-09-07
15:58
OpenAccess [PUBDB-2017-10498] Report/Journal Article
; ; ; et al
Measurement of the $k_\mathrm{t}$ splitting scales in $Z \to \ell\ell$ events in $pp$ collisions at $\sqrt{s} = 8$ TeV with the ATLAS detector
[CERN-EP-2017-033; arXiv:1704.01530] ddc:530
A measurement of the splitting scales occuring in the k$_{t}$ jet-clustering algorithm is presented for final states containing a Z boson. The measurement is done using 20.2 fb$^{−1}$ of proton-proton collision data collected at a centre-of-mass energy of $ \sqrt{s}=8 $ TeV by the ATLAS experiment at the LHC in 2012. [...]
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2017-09-07
15:47
OpenAccess [PUBDB-2017-10494] Report/Journal Article
; ; ; et al
Measurement of $WW/WZ \to \ell\nu qq^{\prime}$ production with the hadronically decaying boson reconstructed asone or two jets in $pp$ collisions at $\sqrt{s}$ = 8 TeV with ATLAS, and constraints on anomalous gauge couplings
[CERN-EP-2017-060; arXiv:1706.01702] ddc:530
This paper presents a study of the production of $WW$ or $WZ$ boson pairs, with one $W$ boson decaying to $e\nu$ or $\mu\nu$ and one $W$ or $Z$ boson decaying hadronically. The analysis uses 20.2 fb$^{-1}$ of $\sqrt{s}=8$ TeV $pp$ collision data, collected by the ATLAS detector at the Large Hadron Collider [...]
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2017-09-07
13:54
OpenAccess [PUBDB-2017-10479] Preprint/Report
; ; ; et al
Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector
[CERN-EP-2017-055; arXiv:1705.02211] ddc:530
The rejection of forward jets originating from additional proton--proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range $|\eta|>2.5$. [...]
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2017-09-07
13:11
OpenAccess [PUBDB-2017-10473] Report/Journal Article
; ; ; et al
Identification and rejection of pile-up jets at high pseudorapidity with the ATLAS detector
[CERN-EP-2017-055; arXiv:1705.02211] ddc:530
The rejection of forward jets originating from additional proton--proton interactions (pile-up) is crucial for a variety of physics analyses at the LHC, including Standard Model measurements and searches for physics beyond the Standard Model. The identification of such jets is challenging due to the lack of track and vertex information in the pseudorapidity range $|\eta|>2.5$. [...]
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2017-08-29
09:30
OpenAccess [PUBDB-2017-10003] Report

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into $b\overline{b}$ in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
[ATLAS-CONF-2016-080]
A search for Standard Model Higgs bosons produced in association with top-quark pairs, $t\bar{t}H$, is presented. The analysis uses 13.2$^{-1}$ of pp collision data at $\sqrt{s}$ = 13 TeV, collected with the ATLAS detector at the Large Hadron Collider in 2015 and 2016. [...]
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2017-08-29
09:26
OpenAccess [PUBDB-2017-10002] Report/Contribution to a conference proceedings
; ; ; et al
Measurement of inclusive and differential cross sections in the $H \rightarrow ZZ^* \rightarrow 4\ell$ decay channel at 13 TeV with the ATLAS detector
[ATLAS-CONF-2017-032; arXiv:1708.02810]
5th Large Hadron Collider Physics Conference, LHCP 2017, Meeting locationShanghai, China, 15 May 2017 - 20 May 20172017-05-152017-05-20
30 pp. (2017) [10.3204/PUBDB-2017-10002]  GO
Inclusive and differential fiducial cross sections of Higgs-boson production in proton-proton collisions are measured in the $H \rightarrow ZZ^* \rightarrow 4\ell$ decay channel. The proton-proton collision data were produced at the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb$^{-1}$. [...]
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2017-08-28
14:13
OpenAccess [PUBDB-2017-09986] Preprint/Report
; ; ; et al
Search for new phenomena in dijet events using 37 fb$^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector
[CERN-EP-2017-042; arXiv:1703.09127]
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Dijet events are studied in the proton--proton collision dataset recorded at $\sqrt{s}=$13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb$^{-1}$ and 33.5 fb$^{-1}$ respectively. Invariant mass and angular distributions are compared to background predictions and no significant deviation is observed. [...]
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