ATLAS Preprints

2018-12-11
04:09
 Proton PDFs constraints from measurements using the ATLAS experiment / Giuli, F. (Oxford U.) High-precision measurements of Standard Model processes provide information on different aspects contributing to the process, such as parton distribution functions, and comparisons with the current precision reached theoretically on the calculations of the cross sections of such processes. [...] arXiv:1811.09449. - 6 p. Fulltext

2018-12-10
16:26
 Electron and photon energy calibration with the ATLAS detector using 2015-2016 LHC proton-proton collision data / ATLAS Collaboration This paper presents the electron and photon energy calibration obtained with the ATLAS detector using about 36 fb$^{-1}$ of LHC proton-proton collision data recorded at $\sqrt{s}=13$ TeV in 2015 and 2016. [...] arXiv:1812.03848 ; CERN-EP-2018-296. - 2018. - 61 p. Fulltext - Previous draft version - Fulltext

2018-12-10
09:48
 Search for heavy long-lived multi-charged particles in proton-proton collisions at $\sqrt{s} = 13$ TeV using the ATLAS detector / ATLAS Collaboration A search for heavy long-lived multi-charged particles is performed using the ATLAS detector at the LHC. [...] arXiv:1812.03673 ; CERN-EP-2018-284. - 2018. - 38 p. Fulltext - Previous draft version - Fulltext

2018-12-09
04:45
 Search for flavour-changing neutral currents $tZ$ interactions in $pp$ collisions at $\sqrt{s}$=13 TeV with ATLAS / Peixoto, Ana A search for flavour-changing neutral currents (FCNC) processes in proton-proton ($pp$) collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the CERN Large Hadron Collider (LHC) is presented. [...] arXiv:1812.01363. - 5 p. Fulltext

2018-12-07
12:43
 Study of the rare decays of $B^0_s$ and $B^0$ mesons into muon pairs using data collected during 2015 and 2016 with the ATLAS detector / ATLAS Collaboration A study of the decays $B^0_s \to \mu^+\mu^-$ and $B^0 \to \mu^+\mu^-$ has been performed using 26.3 fb$^{-1}$ of 13 TeV LHC proton-proton collision data collected with the ATLAS detector in 2015 and 2016. [...] arXiv:1812.03017 ; CERN-EP-2018-291. - 2018. - 44 p. Fulltext - Previous draft version - Fulltext

2018-12-05
09:40
 Beyond standard model searches on diboson resonances, vector-like quarks, and heavy bosons with top in the final state / Pazzini, Jacopo (INFN, Padua ; Padua U.) /ATLAS and CMS Collaborations The most recent results in the searches for physics beyond the standard model at the ATLAS and CMS experiments are presented, based on the data collected in proton-proton collisions at the CERN LHC at the center-of-mass energy of $\sqrt{s}=13$~TeV, with emphasis on the production of vector-like quarks and the production of heavy new resonance decaying to third generation SM quarks or gauge bosons.The decay of these new heavy states will present the striking feature of generating highly collimated decay products, as the results of a large Lorentz boost.For this reasons, the reconstruction and identification of hadronic decays are critical to most searches and are described in detail in this contribution.. CMS-CR-2018-367.- Geneva : CERN, 2018 - 9 p. Fulltext: PDF; In : 25th Rencontres du Vietnam, Quy Nhon, Vietnam, 5 - 11 Aug 2018

2018-12-04
22:51
 Measurements of inclusive and differential fiducial cross-sections of $t\bar{t}\gamma$ production in leptonic final states at $\sqrt{s} = 13$ TeV in ATLAS / ATLAS Collaboration Inclusive and differential cross-sections for the production of a top-quark pair in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 36.1 fb$^{-1}$, collected by the ATLAS detector at the LHC in 2015 and 2016 at a centre-of-mass energy of 13 TeV. [...] arXiv:1812.01697 ; CERN-EP-2018-302. - 2018. - 56 p. Fulltext - Previous draft version - Fulltext

2018-12-04
17:05
 Searches for Higgs bosons with dark matter at the Large Hadron Collider / Gallinaro, Michele (LIP, Lisbon) /ATLAS and CMS Collaborations Convincing and direct evidence for dark matter (DM) on galactic scales comes from the observation of the rotation curves of galaxies. At particle colliders, searches for DM involve the production of a pair of stable electrically neutral and weakly interacting particles with a signature of missing transverse energy ($E^{\rm T}_{\rm miss}$) recoiling against a SM particle. [...] CMS-CR-2018-380.- Geneva : CERN, 2018 - 9 p. Fulltext: PDF; In : 7th workshop on prospects for charged Higgs discovery at colliders, Uppsala, Sweden, 25 - 28 Sep 2018

2018-12-03
03:09
 Top-quark pair production in association with a $W$ or $Z$ boson with the ATLAS experiment / Heer, Sebastian (University of Bonn) The cross section of the $t\bar{t}Z$ and $t\bar{t}W$ processes are measured in a simultaneous fit using 36.1 $\text{fb}^{-1}$ of proton-proton collisions at a centre of mass energy of $\sqrt{s}=13\ \text{TeV}$ recorded by the ATLAS detector at the LHC. [...] arXiv:1812.03679 ; ATL-PHYS-PROC-2018-176. - 2018. - 5 p. Original Communication (restricted to ATLAS) - Full text - Fulltext

2018-12-01
06:26
 ALFA - Results 2011 and plans for 2012 / Hiller, K (DESY, Zeuthen) The essential commissioning steps of the ALFA Roman Pot detectors in the LHC tunnel are described. [...] 2012. - 10 p. Full text - Fulltext