# ATLAS Conference Notes

2021-06-23
08:31
 Measurement of the polarisation of single top quarks and antiquarks produced in the $t$-channel collected with the ATLAS detector at $\sqrt{s}=$ 13 TeV and bounds on the $tWb$ dipole operator A simultaneous measurement of the three components of the top-quark and top-antiquark polarisation vectors in $t$-channel single-top-quark production is presented. [...] ATLAS-CONF-2021-027. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-06-18
11:31
 Search for heavy resonances decaying into a $W$ boson and a Higgs boson in final states with leptons and $b$-jets in $139~fb^{-1}$ of $pp$ collisions at $\sqrt{s}=13~\mathrm{TeV}$ with the ATLAS detector This note presents a search for a new resonance $W^\prime$ decaying into a $W$ boson and a $125~\mathrm{GeV}$ Higgs boson $H$ in the $\ell\nu bb$ final state, where $\ell = e,$ or $\mu$, using $pp$ collision data at 13 TeV corresponding to an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector at the LHC. [...] ATLAS-CONF-2021-026. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-06-18
11:29
 Search for high-mass resonances in final states with a tau lepton and missing transverse momentum with the ATLAS detector A search for high-mass resonances decaying to tau lepton and a neutrino using proton–proton collisions at a center-of-mass energy of $\sqrt{s}=$13 TeV is presented. [...] ATLAS-CONF-2021-025. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-06-18
11:28
 Search for pair-production of vector-like quarks in $pp$ collision events at $\sqrt{s}=13$~TeV with at least one leptonically-decaying $Z$~boson and a third-generation quark with the ATLAS detector A search for the pair-production of vector-like quarks optimized for decays to a $Z$ boson and a third-generation Standard Model quark is presented, using the full Run 2 dataset corresponding to $139\,\mathrm{fb}^{-1}$ of $pp$ collisions at $\sqrt{s}=13\,\mathrm{TeV}$, collected in 2015-2018 with the ATLAS detector at the Large Hadron Collider. [...] ATLAS-CONF-2021-024. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-06-18
11:25
 Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at sqrt(s) = 13 TeV with the ATLAS detector A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. [...] ATLAS-CONF-2021-023. - 2021. - 21 p. Original Communication (restricted to ATLAS) - Full text

2021-06-14
11:40
 Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector A search for electroweakinos at the Large Hadron Collider is reported using fully hadronic final states and missing transverse momentum. [...] ATLAS-CONF-2021-022. - 2021. - 46 p. Original Communication (restricted to ATLAS) - Full text

2021-06-07
13:27
 Direct constraint on the Higgs-charm coupling from a search for Higgs boson decays to charm quarks with the ATLAS detector A search for the Standard Model Higgs boson decaying to a pair of charm quarks is presented. [...] ATLAS-CONF-2021-021. - 2021. - 39 p. Original Communication (restricted to ATLAS) - Full text

2021-05-14
10:56
 Measurement of nuclear modification factor for muons from charm and bottom hadrons in Pb+Pb collisions at 5.02 TeV with the ATLAS detector Heavy flavour hadron production provides information about the transport properties and the microscopic structure of the quark-gluon plasma created in ultra-relativistic heavy-ion collisions. [...] ATLAS-CONF-2021-020. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-04-06
13:54
 Search for heavy particles in the $b$-tagged di-jet mass distribution with additional $b$-tagged jets in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment A search for new heavy particles decaying to two $b$-quarks is reported. [...] ATLAS-CONF-2021-019. - 2021. - 18 p. Original Communication (restricted to ATLAS) - Full text

2021-04-06
13:51
 Search for single vector-like $B$ quark production and decay via $B\rightarrow bH(b\bar{b})$ in pp collisions at $\sqrt{s} = 13\text{ TeV}$ with the ATLAS detector A search is presented for single production of a vector-like $B$ quark decaying to a Standard Model $b$-quark and the Standard Model Higgs boson, which decays into $b\bar{b}$. [...] ATLAS-CONF-2021-018. - 2021. - 36 p. Original Communication (restricted to ATLAS) - Full text