Higgs Boson Portal

ATLAS

PRELIMINARY

BEYOND SM

Search for doubly charged Higgs boson production in multi-lepton final states using 139\,\text{fb}^{-1} of proton--proton collisions at \sqrt{s}= 13\,\text{TeV} with the ATLAS detector

A search for pair production of doubly charged Higgs ( $H^{\pm \pm}$ ) bosons, each decaying into a pair of prompt, isolated, and highly energetic leptons with the same electric charge, is presented. Th...

ATLAS

PRELIMINARY

BEYOND SM

Constraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV pp collision data with two top quarks and missing energy in the final state

This paper presents a statistical combination of searches targeting final states with two top quarks and invisible particles and characterised by the presence of zero, one or two leptons, at least one...

ATLAS

PRELIMINARY

SM

Combination of searches for non-resonant and resonant Higgs boson pair production in the

b\bar{b}\gamma\gamma

,

b\bar{b}\tau^{+}\tau^{-}

and

b\bar{b}b\bar{b}

decay channels using

pp

collisions at

\sqrt{s}

= 13 TeV with the ATLAS detector

This note presents a combination of searches for Higgs boson pair production using 126-139 $\mathrm{fb}^{-1}$ of proton-proton collision data recorded with the ATLAS detector at a center-of-mass energ...

ATLAS

PRELIMINARY

BEYOND SM

Search for a light charged Higgs boson in t

\rightarrow

H^+b decays, with H^{+}

\rightarrow

cb, in the lepton+jets final state in proton-proton collisions at

\sqrt{s}=13

TeV with the ATLAS detector

A search for a charged Higgs boson, $H^{\pm}$ , produced in top-quark decays, $t \rightarrow H^{\pm}b$ , is presented. The search targets $H^{\pm}$ decays into a bottom and a charm quark, $H^{\pm} \righ...

ATLAS

PRELIMINARY

BEYOND SM

Search for resonant and non-resonant Higgs boson pair production in the

b\bar b\tau^+\tau^-

decay channel using 13 TeV

pp

collision data from the ATLAS detector

A search for Higgs boson pair production in events with two $b$ -jets and two $\tau$ -leptons is presented, using a $pp$ collision data set with an integrated luminosity of 139~\text{fb}^{-1} collecte...

ATLAS

PRELIMINARY

BEYOND SM

Search for Higgs boson decays into two spin-0 particles in the

bb\mu\mu

final state with the ATLAS detector in

pp

collisions at

\sqrt{s}=13

TeV

This note presents a search for decays of the Higgs boson with a mass of 125 GeV to a pair of new spin-0 particles, $H\rightarrow aa$ , where one $a$ -boson decays to a $b$ -quark pair and the other to a...

ATLAS

PRELIMINARY

BEYOND SM

Search for exotic decays of the Higgs boson to long-lived particles in

pp

collisions at

\sqrt{s} = 13

TeV using displaced vertices in the ATLAS inner detector

A novel search for exotic decays of the Higgs boson to pairs of long-lived neutral particles, each decaying to a bottom quark pair, is performed using 139 fb $^{-1}$ of $\sqrt{s} = 13$ TeV proton-proto...

ATLAS

PRELIMINARY

BEYOND SM

Search for doubly- and singly-charged Higgs bosons decaying into vector bosons in multi-leptons final states with the ATLAS detector using proton-proton collisions at

\sqrt{s} = 13

TeV

A search for charged Higgs bosons decaying into $W^\pm W^\pm$ or $W^\pm Z$ bosons is performed, involving experimental signatures with two leptons of the same-charge, or three or four leptons with a v...

ATLAS

PRELIMINARY

SM

Observation of vector-boson-fusion production of Higgs bosons in the H{\rightarrow\,}WW^{\ast}{\rightarrow\,}e\nu\mu\nu decay channel in

pp

collisions at

\sqrt{s}=13

TeV with the ATLAS detector

An observation of vector-boson-fusion (VBF) production of Higgs bosons in the H{\rightarrow\,}WW^{\ast}{\rightarrow\,}e\nu\mu\nu decay channel is presented. The proton-proton collision data used to ...

ATLAS

PRELIMINARY

BEYOND SM

Search for heavy resonances decaying into a

Z

boson and a Higgs boson in final states with leptons and

b

-jets in 139~fb^{-1} of

pp

collisions at

\sqrt{s}=13 {TeV}

with the ATLAS detector

This note presents a search for new resonances decaying into a $Z$ boson and a 125~ GeV Higgs boson in the $\nu\nu bb$ and $\ell\ell bb$ final states, where $\ell=e^{\pm}$ or $\mu^{\pm}$ , in $pp$ co...

ATLAS

PRELIMINARY

SM

Measurements of the Higgs boson inclusive, differential and production cross sections in the 4

\ell

decay channel at

\sqrt{s}

= 13 TeV with the ATLAS detector

Inclusive, differential and production mode cross sections of the Higgs boson are measured in the $H \to ZZ^{*} \to 4\ell$ decay channel. Additionally, cross sections are measured for the main product...

ATLAS

PRELIMINARY

SM

Searches for lepton-flavour-violating decays of the Higgs boson in

\sqrt{s}=13

TeV

pp

collisions with the ATLAS detector

This note presents direct searches for lepton flavour violation in Higgs boson decays, $H\rightarrow e\tau$ and $H\rightarrow\mu\tau$ , performed with the ATLAS detector at the LHC. The searches are ba...

ATLAS

PRELIMINARY

BEYOND SM

Search for heavy neutral Higgs bosons produced in association with

b

-quarks and decaying to

b

-quarks at

\sqrt{s}=13

~TeV with the ATLAS detector

A search for heavy neutral Higgs bosons produced in association with one or two $b$ -quarks and decaying to $b$ -quark pairs is presented using 27.8 fb $^{-1}$ of $\sqrt{s}=13$ ~TeV proton--proton collisi...

ATLAS

PRELIMINARY

BEYOND SM

Search for bottom-squark pair production with the ATLAS detector in final states containing Higgs bosons,

b

-jets and missing transverse momentum in

pp

collisions at \sqrt{s} = 13\,\mathrm{TeV}

The result of a search for the production of the supersymmetric partner of the bottom-quark ( $\tilde{b}_{1}$ ) using 79.8\,\mathrm{fb}^{-1} of data collected at \sqrt{s} = 13\,\mathrm{TeV} by the A...

ATLAS

PRELIMINARY

BEYOND SM

Search for Heavy Resonances Decaying to a W or Z Boson and a Higgs Boson in the

q\bar{q}^{(\prime)}b\bar{b}

Final State in

pp

Collisions at

\sqrt{s}

= 13 TeV with the ATLAS Detector

A search for heavy resonances decaying to a $W$ or $Z$ boson and a Higgs boson in the $q\bar{q}^{(\prime)}b\bar{b}$ final state is described. The search uses 36.1 fb $^{-1}$ of proton-proton collision ...

ATLAS

PRELIMINARY

SM

Search for the dimuon decay of the Higgs boson in

pp

collisions at

\sqrt{s}

= 13 TeV with the ATLAS detector

A search for the dimuon decay of the Higgs boson has been performed using data corresponding to an integrated luminosity of 36.1 $\text{fb}^{-1}$ collected with the ATLAS detector in $pp$ collisions a...

ATLAS

PRELIMINARY

SM

Combined measurements of the Higgs boson production and decay rates in

H\to ZZ^*\to 4\ell

and

H\to\gamma\gamma

final states using

pp

collision data at

\sqrt{s}=

13 TeV in the ATLAS experiment

This note presents combined measurements based on Higgs boson production cross sections and branching ratios using more than 13.3 fb $^{-1}$ of proton-proton collision data recorded by the ATLAS experi...

ATLAS

PRELIMINARY

SM

Observation and measurement of Higgs boson decays to

WW^\ast

with ATLAS at the LHC

We report the observation of the production of the Higgs boson in its decay to $WW^\ast$ , based on an excess over background in the dilepton final state of $6.1$ standard deviations, where the standar...

ATLAS

PRELIMINARY

SM

Determination of the off-shell Higgs boson signal strength in the high-mass ZZ final state with the ATLAS detector

The measurement of the $ZZ$ final state in the mass range above the 2 $m_Z$ threshold provides a unique opportunity to measure the off-shell coupling strength of the observed Higgs boson. In this note ...

ATLAS

SUBMITTED

SM

Expected performance of the ATLAS experiment

A detailed study is presented of the expected performance of the ATLAS detector. The reconstruction of tracks, leptons, photons, missing energy and jets is investigated, together with the performance ...