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2020-08-07
12:05
DBCoverage [PUBDB-2020-02961] Journal Article
et al
Measurements of the production cross-section for a $Z$ boson in association with $b$-jets in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
[CERN-EP-2020-022; arXiv:2003.11960]
This paper presents a measurement of the production cross-section of a Z boson in association with b-jets, in proton-proton collisions at $ \sqrt{s} $ = 13 TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 35.6 fb$^{−1}$. Inclusive and differential cross-sections are measured for events containing a Z boson decaying into electrons or muons and produced in association with at least one or at least two b-jets with transverse momentum p$_{T}$> 20 GeV and rapidity |y| < 2.5 [...]
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2020-08-07
11:31
DBCoverage [PUBDB-2020-02960] Journal Article
et al
Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in Pb+Pb collisions at $\sqrt{s_\mathrm{NN}} =5.02 TeV with the ATLAS detector
[CERN-EP-2019-274; arXiv:2003.03565]
Azimuthal anisotropies of muons from charm and bottom hadron decays are measured in Pb+Pb collisions at sNN=5.02TeV . The data were collected with the ATLAS detector at the Large Hadron Collider in 2015 and 2018 with integrated luminosities of 0.5nb−1 and 1.4nb−1 , respectively. [...]
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2020-08-07
11:24
arXiv [PUBDB-2020-02959] Journal Article
et al
Search for heavy Higgs bosons decaying into two tau leptons with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
[CERN-EP-2020-014; arXiv:2002.12223]
A search for heavy neutral Higgs bosons is performed using the LHC Run 2 data, corresponding to an integrated luminosity of 139 fb-1 of proton-proton collisions at s=13 TeV recorded with the ATLAS detector. The search for heavy resonances is performed over the mass range 0.2–2.5 TeV for the τ+τ- decay with at least one τ-lepton decaying into final states with hadrons. [...]
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2020-08-06
13:45
[PUBDB-2020-02955] Conference Presentation

Higgs boson combination and coupling measurements at CMS
40th International Conference on High Energy Physics, ICHEP2020, ONLINEONLINE, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
The most recent CMS results on Higgs boson properties from the combination of different final states will be presented, including the Higgs boson mass, couplings, and interpretations in the context of effective field theories extending the standard model..
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2020-08-06
13:43
[PUBDB-2020-02954] Conference Presentation

Precision luminosity measurement with proton-proton collisions at the CMS experiment in Run 2
40th International Conference on High Energy Physics, ICHEP2020, ONLINEONLINE, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
Precision luminosity calibration is critical to determine fundamental parameters of the standard model and to constrain or to discover beyond-the-standard-model phenomena at LHC. The luminosity determination at the LHC interaction point 5 with the CMS detector, using proton-proton collisions at 13 and 5.02 TeV during Run 2 of the LHC (2015–2018), is reported. [...]
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2020-08-06
13:40
[PUBDB-2020-02953] Conference Presentation

Tau identification exploiting deep learning techniques
40th International Conference on High Energy Physics, ICHEP2020, ONLINEONLINE, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
The recently deployed DeepTau algorithm for the discrimination of taus from light flavor quark or gluon induced jets, electrons, or muons is an ideal example for the exploitation of modern deep learning neural network techniques. With the current algorithm a suppression of miss-identification rates by factors of two and more have been achieved for the same identification efficiency for taus as for the MVA identification algorithms used for the LHC Run-1, leading to significant performance gains for many tau related analyses. [...]
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2020-08-06
13:37
[PUBDB-2020-02952] Conference Presentation

Searching for pair production of SUSY particles in leptonic final states at the CMS experiment
40th International Conference on High Energy Physics, ICHEP2020, ONLINEONLINE, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
The most recent results for searches of pair production of charged and neutral electroweak SUSY particles are presented. The analyses are performed in the final states containing one or more leptons, and presence of a boosted Higgs boson. [...]
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2020-08-06
13:34
[PUBDB-2020-02951] Conference Presentation

Tracker alignment of the CMS detector
40th International Conference on High Energy Physics, ICHEP2020, ONLINEONLINE, Virtual World, 28 Jul 2020 - 6 Aug 20202020-07-282020-08-06
The positions of the nearly twenty-thousands silicon sensors of the CMS central tracking system must be determined with a precision better than their intrinsic resolution in order to provide an optimal reconstruction of charged particle trajectories. The procedure, referred as the alignment, includes also the adjustment of the orientations and the determination of the deviation from flatness of the sensor surfaces.Data-driven methods used to carefully align the detector and validate the alignment will be presented with CMS Run-2 data, collected from 2016 to 2018. [...]
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2020-08-06
11:48
DBCoverage [PUBDB-2020-02949] Journal Article
et al
Search for dijet resonances in events with an isolated charged lepton using $\sqrt{s} = 13$ TeV proton-proton collision data collected by the ATLAS detector
[CERN-EP-2019-276; arXiv:2002.11325]
A search for dijet resonances in events with at least one isolated charged lepon is performed using 139 fb$^{−1}$ of $ \sqrt{s} $ = 13 TeV proton-proton collision data recorded by the ATLAS detector at the LHC. The dijet invariant-mass (m$_{jj}$) distribution constructed from events with at least one isolated electron or muon is searched in the region 0.22 < m$_{jj}$< 6.3 TeV for excesses above a smoothly falling background from Standard Model processes [...]
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2020-08-06
11:39
DBCoverage [PUBDB-2020-02948] Journal Article
et al
Observation of the associated production of a top quark and a $Z$ boson in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
[CERN-EP-2019-273; arXiv:2002.07546]
Single top-quark production in association with a Z boson, where the Z boson decays to a pair of charged leptons, is measured in the trilepton channel. The proton-proton collision data collected by the ATLAS experiment from 2015 to 2018 at a centre-of-mass energy of 13 TeV are used, corresponding to an integrated luminosity of 139 fb$^{−1}$ [...]
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