Browsing by Author "Morii, Masahiro"
Now showing items 1-20 of 312
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Analysis of events with b-jets and a pair of leptons of the same charge in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector
Morii, Masahiro (Springer Science and Business Media LLC, 2015-10) -
Beam-induced and cosmic-ray backgrounds observed in the ATLAS detector during the LHC 2012 proton-proton running period
Franklin, Melissa; Huth, John; Morii, Masahiro (IOP Publishing, 2016)This paper discusses various observations on beam-induced and cosmic-ray backgrounds in the ATLAS detector during the LHC 2012 proton-proton run. Building on published results based on 2011 data, the correlations between ... -
Charged-particle distributions at low transverse momentum in $$\sqrt{s} = 13$$ TeV pp interactions measured with the ATLAS detector at the LHC
Franklin, Melissa; Huth, John; Morii, Masahiro (Springer Nature, 2016)Measurements of distributions of charged particles produced in proton–proton collisions with a centre-of-mass energy of 13 TeV are presented. The data were recorded by the ATLAS detector at the LHC and correspond to an ... -
Charged-particle distributions in pp interactions at $$\sqrt{s}=8 \mathrm {\, TeV}$$ measured with the ATLAS detector
Franklin, Melissa; Huth, John; Morii, Masahiro (Springer Nature, 2016)This paper presents measurements of distributions of charged particles which are produced in proton–proton collisions at a centre-of-mass energy of √s = 8 TeV and recorded by the ATLAS detector at the LHC. A special dataset ... -
Charged-particle distributions in √s = 13 TeV pp interactions measured with the ATLAS detector at the LHC
Morii, Masahiro (Elsevier, 2016) -
Charged-particle distributions in √s=13 TeV pp interactions measured with the ATLAS detector at the LHC
Franklin, Melissa; Huth, John; Morii, Masahiro (Elsevier BV, 2016-07)Charged-particle distributions are measured in proton–proton collisions at a centre-of mass energy of 13 TeV, using a data sample of nearly 9 million events, corresponding to an integrated luminosity of 170 µb−1, recorded ... -
Combination of searches for W W , W Z , and Z Z resonances in pp collisions at √s = 8 TeV with the ATLAS detector
Morii, Masahiro (Elsevier BV, 2016-04) -
Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector
Franklin, Melissa; Huth, John; Morii, Masahiro (Springer Science and Business Media LLC, 2015-11) -
Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H→γγ decay channel at s√=8 TeV with the ATLAS detector
Clark, Brian Lee; Franklin, Melissa; Huth, John; Ippolito, Valerio; Lazovich, Tomo; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Skottowe, Hugh Philip; Spearman, William; Sun, Siyuan; Tolley, Emma; Tuna, Alexander; Yen, Andy; Zambito, Stefano (Elsevier BV, 2016)The strength and tensor structure of the Higgs boson's interactions are investigated within an effective field theory framework, which allows new CP-even and CP-odd interactions that can lead to changes in the kinematic ... -
Dark Matter Interpretations of ATLAS Searches for the Electroweak Production of Supersymmetric Particles in S =8 TeV Proton-Proton Collisions
Franklin, Melissa; Huth, John; Morii, Masahiro; Spearman, William (Springer Nature, 2016)A selection of searches by the ATLAS experiment at the LHC for the electroweak production of SUSY particles are used to study their impact on the constraints on dark matter candidates. The searches use 20 fb−1 of proton–proton ... -
Determination of Spin and Parity of the Higgs Boson in the WW ∗ →eνμν Decay Channel With the ATLAS Detector
Clark, Brian Lee; Franklin, Melissa; Huth, John; Ippolito, Valerio; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Yen, Andy (Springer Nature, 2015)Studies of the spin and parity quantum numbers of the Higgs boson in the WW ∗ →eνμν final state are presented, based on proton–proton collision data collected by the ATLAS detector at the Large Hadron Collider, corresponding ... -
Determination of the ratio of b-quark fragmentation fractions fs/fd in pp collisions at s√=7 TeV with the ATLAS detector
Clark, Brian Lee; Franklin, Melissa; Huth, John; Ippolito, Valerio; Lazovich, Tomo; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Yen, Andy; Zambito, Stefano (American Physical Society (APS), 2015)With an integrated luminosity of 2.47 fb−1 recorded by the ATLAS experiment at the LHC, the exclusive decays B0s→J/ψϕ and B0d→J/ψK∗0 of B mesons produced in pp collisions at s√=7 TeV are used to determine the ratio of ... -
Determination of the Top-Quark Pole Mass Using T T + 1-Jet Events Collected With the ATLAS Experiment in 7 TeV Pp Collisions
Morii, Masahiro; Franklin, Melissa; Clark, B; Huth, John; Spearman, William; Lopez Mateos, D; Ippolito, Victoria; Barreiro Guimarães da Costa, J; Skottowe, H (Springer Science and Business Media LLC, 2015-10)The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the ����⎯⎯+ 1-jet system. This distribution can ... -
Dijet production in s√=7 TeV pp collisions with large rapidity gaps at the ATLAS experiment
Clark, Brian Lee; Franklin, Melissa; Huth, John; Ippolito, Valerio; Lazovich, Tomo; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Tuna, Alexander; Yen, Andy; Zambito, Stefano (Elsevier BV, 2016)A 6.8 nb−1 sample of pp collision data collected under low-luminosity conditions at s√=7 TeV by the ATLAS detector at the Large Hadron Collider is used to study diffractive dijet production. Events containing at least two ... -
Electron efficiency measurements with the ATLAS detector using 2012 LHC proton–proton collision data
Chan, Stephen Kam Wah; Clark, Brian Lee; Franklin, Melissa; Giromini, Paolo; Huth, John; Ippolito, Valerio; Lazovich, Tomo; Lopez Mateos, David; Morii, Masahiro; Rogan, Christopher S.; Roloff, Jennifer Kathryn; Sun, Siyuan; Tolley, Emma; Tong, Baojia; Tuna, Alexander; Zambito, Stefano (Springer Nature, 2017)This paper describes the algorithms for the reconstruction and identification of electrons in the central region of the ATLAS detector at the Large Hadron Collider (LHC). These algorithms were used for all ATLAS results ... -
Erratum To: Search for New Phenomena in Final States With an Energetic Jet and Large Missing Transverse Momentum in Pp Collisions at √s = 8 TeV With the ATLAS Detector
Franklin, Melissa; Huth, John; Ippolito, Valerio; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William (Springer Nature, 2015) -
Erratum To: Search for Production of WW / WZ Resonances Decaying to a Lepton, Neutrino and Jets in Pp Collisions at √s=8 TeV With the ATLAS Detector
Franklin, Melissa; Huth, John; Ippolito, Valerio; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Yen, Andy (Springer Nature, 2015)A search is presented for narrow diboson resonances decaying to WW or WZ in the final state where one W boson decays leptonically (to an electron or a muon plus a neutrino) and the other W/Z boson decays hadronically. The ... -
Evidence for Light-by-Light Scattering in Heavy-Ion Collisions With the ATLAS Detector at the LHC
Morii, Masahiro; Huth, John; Franklin, Melissa; Spearman, William (Springer Science and Business Media LLC, 2017-08-14)Light-by-light scattering (γγ→γγ) is a quantum-mechanical process that is forbidden in the classical theory of electrodynamics. This reaction is accessible at the Large Hadron Collider thanks to the large electromagnetic ... -
Evidence for single top-quark production in the s-channel in proton-proton collisions at s√=8 TeV with the ATLAS detector using the Matrix Element Method
Clark, Brian Lee; Franklin, Melissa; Huth, John; Ippolito, Valerio; Lazovich, Tomo; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Tuna, Alexander; Yen, Andy; Zambito, Stefano (Elsevier BV, 2016)This Letter presents evidence for single top-quark production in the s-channel using proton-proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS detector at the CERN Large Hadron Collider. The analysis is ... -
Evidence for single top-quark production in the s-channel in proton–proton collisions at √s = 8 TeV with the ATLAS detector using the Matrix Element Method
Franklin, Melissa; Huth, John; Morii, Masahiro (Elsevier, 2016-05-10)