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ATLAS Conference Notes

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2020-08-11
00:20
Search for resonances decaying to photon pairs in 139 $fb^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector.
Searches for new resonances in the diphoton final state, with spin-0 as predicted by theories with an extended Higgs sector and with spin-2 using a warped extra-dimension benchmark model, are presented using 139 fb$^{-1}$ of $\sqrt{s} =$ 13TeV $pp$ collision data collected the ATLAS experiment at the LHC. [...]
ATLAS-CONF-2020-037. - 2020.
Original Communication (restricted to ATLAS) - Full text

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2020-08-11
00:19
Search for Dark Matter Produced in Association with a Dark Higgs Boson Decaying to $W^\pm W^\mp$ or $ZZ$ in Fully Hadronic Final States Using $pp$ Collisions at $\sqrt s=13$~TeV Recorded with the ATLAS Detector
Several extensions of the Standard Model predict the production of dark matter particles at the LHC. [...]
ATLAS-CONF-2020-036. - 2020.
Original Communication (restricted to ATLAS) - Full text

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2020-08-11
00:18
Lepton Flavour Violation at the LHC : a search for $Z\to e\tau$ and $Z\to\mu\tau$ decays with the ATLAS detector
In the Standard Model of particle physics, three lepton families (flavours) are part of the fundamental blocks of matter. [...]
ATLAS-CONF-2020-035. - 2020.
Original Communication (restricted to ATLAS) - Full text

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2020-08-11
00:10
Search for dark matter associated production with a single top quark in $\sqrt{s}=13$ TeV (pp) collisions with the ATLAS detector
This paper presents a search for dark matter in the context of a two-Higgs-doublet model together with an additional pseudo-scalar mediator, which decays to the dark matter particles ($\chi$). [...]
ATLAS-CONF-2020-034. - 2020.
Original Communication (restricted to ATLAS) - Full text

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2020-08-06
18:08
Combination of the ATLAS, CMS and LHCb results on the $B^0_{(s)} \to \mu^+\mu^-$ decays /CMS Collaboration ; LHCb Collaboration ; ATLAS Collaboration
A combination of results on the rare $B^0_s \to \mu^+\mu^-$ and $B^0 \to \mu^+\mu^-$ decays from the ATLAS, CMS, and LHCb experiments using data collected at the Large Hadron Collider between 2011 and 2016, is presented. The $B^0_s \to \mu^+\mu^-$ branching fraction is obtained to be $(2.69\,^{+\, 0.37}_{-\, 0.35}) \times 10^{-9}$ and the effective lifetime of the $B^0_s \to \mu^+\mu^-$ decay is measured to be $\tau_{B^0_s \to \mu^+\mu^-} = 1.91^{+0.37}_{-0.35}$ ps. [...]
CMS-PAS-BPH-20-003; LHCb-CONF-2020-002; ATLAS-CONF-2020-049.- Geneva : CERN, 2020 Figure_001-a: PDF; Figure_001-b: PDF; Figure_002-a: PDF; Figure_002-b: PDF; Figure_003: PDF; Figure_004: PDF; Fulltext in PDF: PDF;

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2020-08-03
11:58
Search for pair production of scalar leptoquarks decaying to first or second generation leptons and boosted hadronically decaying top quarks in $pp$ collisions at $\sqrt{s}=13 \ \mathrm{TeV}$ with the ATLAS detector
A search for pair production of scalar leptoquarks, each decaying to a top quark and either an electron or a muon, is presented. [...]
ATLAS-CONF-2020-033. - 2020.
Original Communication (restricted to ATLAS) - Full text

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2020-08-03
11:57
Search for heavy resonances decaying into a pair of Z bosons in the $\ell^+\ell^−\ell′^+\ell′^−$ and $\ell^+\ell^−\nu\bar{\nu}$ final states using 139 fb$^{−1}$ of proton–proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
A search for heavy resonances decaying into a pair of Z bosons leading to $\ell^+\ell^−\ell′^+\ell′^−$ and $\ell^+\ell^−\nu\bar{\nu}$ final states, where $\ell$ stands for either an electron or a muon, is presented. [...]
ATLAS-CONF-2020-032. - 2020. - 40 p.
Original Communication (restricted to ATLAS) - Full text

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2020-08-03
11:55
Search for bottom-squark pair production in $pp$ collision events at $\sqrt s = 13~$TeV with hadronically decaying tau leptons, $b$-jets and missing transverse momentum using the ATLAS detector
A search for pair production of bottom squarks in events with hadronically decaying tau leptons, $b$-tagged jets and large missing transverse momentum is presented. [...]
ATLAS-CONF-2020-031. - 2020. - 26 p.
Original Communication (restricted to ATLAS) - Full text

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2020-08-03
11:53
Muon reconstruction and identification efficiency in ATLAS using the full Run 2 $pp$ collision data set at $\sqrt{s}=13$ TeV
This note documents the muon identification performance obtained by the ATLAS experiment between 2015 and 2018 during the LHC Run 2, corresponding to 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV. [...]
ATLAS-CONF-2020-030. - 2020.
Original Communication (restricted to ATLAS) - Full text

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2020-08-03
11:51
Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a tau-lepton in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
A search for pair production of third-generation scalar leptoquarks decaying into a top quark and a tau-lepton is presented. [...]
ATLAS-CONF-2020-029. - 2020.
Original Communication (restricted to ATLAS) - Full text

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