Browsing by Author "Sun, Siyuan"
Now showing items 1-20 of 90
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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 ... -
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 ... -
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 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 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 ... -
Identification and Energy Calibration of Hadronically Decaying Tau Leptons With the ATLAS Experiment in pp Collisions at √s=8 TeV
Franklin, Melissa; Huth, John; Ippolito, Valerio; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Yen, Andy; Zevi Della Porta, G (Springer Nature, 2015)This paper describes the trigger and offline reconstruction, identification and energy calibration algorithms for hadronic decays of tau leptons employed for the data collected from pp collisions in 2012 with the ATLAS ... -
Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at s√=8 TeV
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 (Springer Nature, 2016)This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy ... -
Measurement of charged-particle distributions sensitive to the underlying event in s√=13 TeV proton-proton collisions with the ATLAS detector at the LHC
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 (Springer Nature, 2017)We present charged-particle distributions sensitive to the underlying event, measured by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV, in low-luminosity Large Hadron Collider fills ... -
Measurement of Distributions Sensitive to the Underlying Event in Inclusive Z-Boson Production in pp Collisions at √s = 7 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; Zevi Della Porta, G (Springer Nature, 2014)A measurement of charged-particle distributions sensitive to the properties of the underlying event is presented for an inclusive sample of events containing a Z -boson, decaying to an electron or muon pair. The measurement ... -
Measurement of D∗±, D± and D±s meson production cross sections 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 (Elsevier BV, 2016)The production of D∗±, D± and D±s charmed mesons has been measured with the ATLAS detector in pp collisions at s√=7 TeV at the LHC, using data corresponding to an integrated luminosity of 280nb−1. The charmed mesons have ... -
Measurement of Flow Harmonics With Multi-Particle Cumulants in Pb+Pb Collisions at √sNN =2.76 TeV With the ATLAS Detector
Franklin, Melissa; Huth, John; Ippolito, Valerio; Lopez Mateos, David; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Yen, Andy; Zevi Della Porta, G (Springer Nature, 2014)[en] ATLAS measurements of the azimuthal anisotropy in lead.lead collisions at √sNN = 2.76 TeV are shown using a dataset of approximately 7 μb-1 collected at the LHC in 2010. The measurements are performed for charged ... -
Measurement of four-jet differential cross sections in s√=8 TeV proton-proton collisions using 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; Tuna, Alexander; Yen, Andy; Zambito, Stefano (Springer Nature, 2015)Differential cross sections for the production of at least four jets have been measured in proton-proton collisions at s√=8 TeV at the Large Hadron Collider using the ATLAS detector. Events are selected if the four anti-kt ... -
Measurement of jet activity produced in top-quark events with an electron, a muon and two b-tagged jets in the final state in pp collisions at s√=13 TeV with the ATLAS detector
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)Measurements of jet activity in top-quark pair events produced in proton--proton collisions are presented, using 3.2 fb−1 of pp collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment at the ... -
Measurement of the bb¯ Dijet Cross Section in pp Collisions at √s=7 TeV With the ATLAS Detector
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.; Sun, Siyuan; Tolley, Emma; Tong, Baojia; Tuna, Alexander; Yen, Andy; Zambito, Stefano (Springer Nature, 2016)The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of √s=7 TeV, using the ATLAS detector at the LHC. The data used correspond ... -
Measurement of the branching ratio Γ(Λ0b→ψ(2S)Λ0)/Γ(Λ0b→J/ψΛ0) 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 (Elsevier BV, 2015)An observation of the Λ0b→ψ(2S)Λ0 decay and a comparison of its branching fraction with that of the Λ0b→J/ψΛ0 decay has been made with the ATLAS detector in proton--proton collisions at s√=8TeV at the LHC using an integrated ... -
Measurement of the Charge Asymmetry in Top-Quark Pair Production in the Lepton-Plus-Jets Final State in pp Collision Data at √s = 8 TeV With the ATLAS Detector
Clark, Brian Lee; Franklin, Melissa; Huth, John; Ippolito, Valerio; Lazovich, Tomo; Lopez Mateos, D; Mercurio, Kevin; Morii, Masahiro; Spearman, William; Sun, Siyuan; Tolley, Emma; Tuna, Alexander; Yen, Andy; Zambito, Stefano (Springer Nature, 2016)This paper reports inclusive and differential measurements of the tt¯tt¯ charge asymmetry ACAC in 20.3 fb−120.3 fb−1 of s√=8 TeVs=8 TeV pppp collisions recorded by the ATLAS experiment at the Large Hadron Collider ... -
Measurement of the correlations between the polar angles of leptons from top quark decays in the helicity basis at s√=7TeV using 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; Tuna, Alexander; Yen, Andy; Zambito, Stefano (American Physical Society (APS), 2016)A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t and t¯ quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector ... -
Measurement of the cross section for inclusive isolated-photon production in pp collisions at s√=13 TeV using the ATLAS detector
Chan, Stephen Kam Wah; Clark, Brian Lee; Franklin, Melissa; Giromini, Paolo; Huth, John; Lazovich, Tomo; Lopez Mateos, David; Morii, Masahiro; Rogan, Christopher S.; Roloff, Jennifer Kathryn; Sun, Siyuan; Tolley, Emma; Tong, Baojia; Tuna, Alexander; Zambito, Stefano (Elsevier BV, 2017)Inclusive isolated-photon production in pp collisions at a centre-of-mass energy of 13 TeV is studied with the ATLAS detector at the LHC using a data set with an integrated luminosity of 3.2 fb−1. The cross section is ...