ATLAS Conference Notes

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2021-09-29
18:24

Combination of measurements of Higgs boson production in association with a $W$ or $Z$ boson in the $ b\bar{b}$ decay channel with the ATLAS experiment at $\sqrt{s}=13$ TeV
A combination of measurements of associated production of a Standard Model Higgs boson with an electroweak gauge boson, $W$ or $Z$, is presented, targeting Higgs boson decays to bottom quarks and $W$ or $Z$ boson decays to leptons. [...]
ATLAS-CONF-2021-051. - 2021.
Original Communication (restricted to ATLAS) - Full text

2021-09-29
18:22

Differential $t\bar{t}$ cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb$^{-1}$ of ATLAS data
Measurements are presented of single-, double-, and triple-differential cross-sections for boosted top-quark pair-production in 13 TeV LHC proton-proton collisions recorded by the ATLAS detector. [...]
ATLAS-CONF-2021-050. - 2021. - 83 p.
Original Communication (restricted to ATLAS) - Full text

2021-09-15
16:25

Search for flavor-changing neutral-current couplings between the top quark and the Z boson with LHC Run2 proton-proton collisions at $\sqrt{s} = 13\,\text{TeV}$ with the ATLAS detector
A search for flavor-changing neutral-current couplings between a top quark, an up or charm quark and a $Z$ boson is presented, using proton-proton collision data at $\sqrt{s} = 13\,\text{TeV}$ collected by the ATLAS detector at the Large Hadron Collider. [...]
ATLAS-CONF-2021-049. - 2021. - 32 p.
Original Communication (restricted to ATLAS) - Full text

2021-09-15
16:24

Search for heavy resonances in four-top-quark final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
A search for associated production of a heavy $Z'$ boson with a top-antitop-quark pair $(t\bar{t}Z')$, and decaying into a $t\bar{t}$ pair is presented. [...]
ATLAS-CONF-2021-048. - 2021.
Original Communication (restricted to ATLAS) - Full text

2021-09-04
10:39

Search for $H^{\pm} \rightarrow W^{\pm}A \rightarrow W^{\pm}\mu\mu$ in $pp \rightarrow t\overline{t}$ events using an $e\mu\mu$ signature with the ATLAS detector at $\sqrt{s}=13$ TeV
This note presents a search for a charged Higgs boson ($H^{\pm}$) decaying to a pseudoscalar particle ($A$) and a $W$ boson in top-quark pair events. [...]
ATLAS-CONF-2021-047. - 2021. - 15 p.
Original Communication (restricted to ATLAS) - Full text

2021-08-25
11:41

Study of the $B_c^+\to J/\psi D_s^+$ and $B_c^+\to J/\psi D_s^{*+}$ decays in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
A study of the $B_c^+\to J/\psi D_s^+$ and $B_c^+\to J/\psi D_s^{*+}$ decays using 139 fb$^{-1}$ of integrated luminosity collected with the ATLAS detector from $\sqrt{s} = 13$ TeV $pp$ collisions at the LHC is presented. [...]
ATLAS-CONF-2021-046. - 2021.
Original Communication (restricted to ATLAS) - Full text

2021-08-25
11:40

A search for an unexpected asymmetry in the production of $e^+ \mu^-$ and $e^- \mu^+$ pairs in proton-proton collisions recorded by the ATLAS detector at $\sqrt s = 13~\mathrm{TeV}$
This search, a type not previously performed at ATLAS, uses a comparison of the production cross sections for $e^+ \mu^-$ and $e^- \mu^+$ pairs to constrain Beyond Standard Model physics processes. [...]
ATLAS-CONF-2021-045. - 2021. - 15 p.
Original Communication (restricted to ATLAS) - Full text

2021-08-25
11:38

Measurements of Higgs boson production cross-sections in the $H\to\tau^{+}\tau^{-}$ decay channel in $pp$ collisions at $\sqrt{s}=13\,\text{TeV}$ with the ATLAS detector
Measurements of the production cross-sections of the Standard Model (SM) Higgs boson ($H$) decaying into a pair of $\tau$ leptons are presented. [...]
ATLAS-CONF-2021-044. - 2021. - 76 p.
Original Communication (restricted to ATLAS) - Full text

2021-08-25
11:36

Search for vector boson resonances decaying to a top quark and a bottom quark in the hadronic final state using $pp$ collisions at $\sqrt{s}~=~13$ TeV with the ATLAS detector
A search for a new charged massive gauge boson, $W'$, is performed with the ATLAS detector at the LHC. [...]
ATLAS-CONF-2021-043. - 2021. - 24 p.
Original Communication (restricted to ATLAS) - Full text

2021-08-25
11:35

Search for the Charged-Lepton-Flavor Violating decay $Z\rightarrow e\mu$ in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
A search is presented for the charged-lepton-flavor violating process $Z\rightarrow e\mu$ using 139~fb$^{-1}$ of $pp$ collision data collected with the ATLAS experiment at $\sqrt{s}=13$ TeV. [...]
ATLAS-CONF-2021-042. - 2021. - 15 p.
Original Communication (restricted to ATLAS) - Full text

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