ATLAS Conference Notes

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2015-02-12
00:45

Search for exotic Higgs-boson decays in events with at least one photon, missing transverse momentum, and two forward jets produced in $\sqrt{s}$ = 8 TeV $\boldsymbol{pp}$ collisions with the ATLAS detector
A search is performed for Higgs-boson decays to neutralinos and/or gravitinos in events with at least one photon, missing transverse momentum and two forward jets, a topology where vector boson fusion production is enhanced. [...]
ATLAS-CONF-2015-001. - 2015. - 19 p.
Original Communication (restricted to ATLAS) - Full text

2014-11-25
19:46

Search for Scalar-Charm Pair-Production with the ATLAS Detector in $pp$ Collisions at $\sqrt{s}=$ 8 TeV
The results of a dedicated search for pair production of scalar partners of charm quarks are reported. [...]
ATLAS-CONF-2014-063. - 2014. - 9 p.
Original Communication (restricted to ATLAS) - Fulltext

2014-11-25
13:56

Search for direct production of charginos and neutralinos decaying via the 125 GeV Higgs boson in $\sqrt{s}$ = 8 TeV $pp$ collisions with the ATLAS detector
A search for the direct pair production of charginos and neutralinos $pp\to\tilde{\chi}_1^\pm\tilde{\chi}_2^0$ is presented, where the chargino decays via a $W$ boson $\tilde{\chi}_1^\pm\to \tilde{\chi}_1^0 (W^{\pm}\to\ell^{\pm}\nu)$, while the neutralino decays via the 125 GeV Higgs boson $\tilde{\chi}_2^0\to \tilde{\chi}_1^0 (h\to bb/\gamma\gamma/\ell^{\pm}\nu qq)$ to the lightest neutralino. [...]
ATLAS-CONF-2014-062. - 2014.
Original Communication (restricted to ATLAS) - Fulltext

2014-10-13
11:10

Evidence for Higgs boson Yukawa couplings in the $H\to\tau\tau$ decay mode with the ATLAS detector
Results of a search for $H\to\tau\tau$ decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. [...]
ATLAS-CONF-2014-061. - 2014. - 52 p.
Original Communication (restricted to ATLAS) - Full text

2014-10-13
10:24

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 standard model expectation is $5.8$ standard deviations. [...]
ATLAS-CONF-2014-060. - 2014. - 77 p.
Original Communication (restricted to ATLAS) - Full text

2014-10-02
00:34

Differential top–antitop production cross-section measurements in pp collisions at $\sqrt{s} = 7$ TeV as a function of pseudo-top-quark observables in the single-lepton channel using the ATLAS detector
The differential top-quark pair production cross-section is presented in terms of a top-quark proxy observable referred to as the pseudo-top-quark whose dependence on theoretical models is minimal. [...]
ATLAS-CONF-2014-059. - 2014. - 30 p.
Original Communication (restricted to ATLAS) - Full text

2014-10-01
00:14

Estimation of non-prompt and fake lepton backgrounds in final states with top quarks produced in proton-proton collisions at \sqrt{s}=8~TeV with the ATLAS detector
This note presents methods for estimating non-prompt and fake lepton backgrounds developed in the context of top analyses using the ATLAS detector. [...]
ATLAS-CONF-2014-058. - 2014.
Original Communication (restricted to ATLAS) - Full text

2014-09-30
18:36

Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum using the ATLAS detector in $\sqrt{s}$ = 8 TeV proton-proton collisions
The differential cross-section for boosted top quark pair production is measured in 20.3~\ifb\ of proton-proton collisions at a center-of-mass energy of 8 TeV. [...]
ATLAS-CONF-2014-057. - 2014. - 17 p.
Original Communication (restricted to ATLAS) - Full text

2014-09-30
17:28

Measurement of spin correlation in top–antitop quark events and search for top squark pair production in proton–proton collisions at $\sqrt{s}$=8 TeV using the ATLAS detector
A measurement of spin correlation in $t\bar{t}$ production is presented using data collected with the ATLAS detector at the Large Hadron Collider (LHC) in proton--proton collisions at a center-of-mass energy of $8$ TeV, corresponding to an integrated luminosity of $20.3$~fb$^{-1}$. [...]
ATLAS-CONF-2014-056. - 2014. - 13 p.
Original Communication (restricted to ATLAS) - Full text

2014-09-30
17:25

Measurement of the top quark mass in topologies enhanced with single top-quarks produced in the t-channel in $\sqrt{s}=8\,\mathrm{TeV}$ ATLAS data
This note presents a measurement of the top quark mass in topologies enhanced with single top quarks produced in the $t$-channel via weak interaction produced via weak interactions. [...]
ATLAS-CONF-2014-055. - 2014.
Original Communication (restricted to ATLAS) - Full text

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