Now showing items 34-53 of 428

    • Electron and Photon Energy Calibration with the ATLAS Detector Using 2015-2016 LHC Proton-Proton Collision Data 

      Aaboud, M.; Aad, G.; Abbott, B.; Abbott, D. C.; Abdinov, O.; Abeloos, B.; Abhayasinghe, D. K.; Izen, Joseph M.; Meirose, Bernhard; Reeves, Kendall (Institute of Physics Publishing, 2019-03-18)
      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 √s=13 TeV in 2015 and 2016. The different calibration steps ...
    • Electron and Photon Energy Calibration with the ATLAS Detector using LHC Run 1 Data 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Izen, Joseph M.; Leyton, Michael; Lou, Xinchou; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Springer New York LLC, 2014-10-01)
      This paper presents the electron and photon energy calibration achieved with the ATLAS detector using about 25 fb⁻¹ of LHC proton−proton collision data taken at centre-of-mass energies of √s = 7 and 8 TeV. The reconstruction ...
    • Electron Efficiency Measurements with the ATLAS Detector Using 2012 LHC Proton–Proton Collision Data 

      Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; Abidi, S. H.; Izen, Joseph M.; Meirose, Bernhard; Reeves, Kendall; ATLAS Collaboration (Springer, 2018-05-15)
      The production of a Z boson and a photon in association with a high-mass dijet system is studied using 20.2 fb⁻¹ of proton-proton collision data at a centre-of-mass energy of √s̅ = 8 TeV recorded with the ATLAS detector ...
    • Evidence for an excess of B̄ → D^(*)_τ⁻ ν̅_τ decays 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (Amer Physical Soc, 2012-09-06)
      Based on the full BABAR data sample, we report improved measurements of the ratios R(D^( *) = ℬ(B̄→D^( *)τ -ν {̄τ}) / ℬ(B̄→D^( *)ℓe̅ν ̅ℓ), where ℓ is either e or μ. These ratios are sensitive to new physics contributions ...
    • Evidence for CP Violation in B⁺ → K*(892)⁺π⁰ from a Dalitz Plot Analysis of B⁺ → K_s⁰π⁺π⁰ Decays 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2017-10-02)
      We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state K_s⁰ π⁺π⁰ using the full BABAR data set of 470.9 ± 2.8 million BB̅ events collected at the Υ(4S) resonance. We measure ...
    • Evidence for Electroweak Production of W^±W^±jj in pp Collisions at √s̅ = 8 TeV with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Reeves, Kendall; Namasivayam, Harisankar; Lou, Xinchou; Leyton, Michael; Izen, Joseph M.; ATLAS Collaboration (2014-10-03)
      This Letter presents the first study of W^±W^±jj, same-electric-charge diboson production in association with two jets, using 20.3 fb⁻¹ of proton-proton collision data at √s̅ = 8 TeV recorded by the ATLAS detector at the ...
    • Evidence for Single Top-Quark Production in the S-Channel in Proton-Proton Collisions at √s̅ = 8 TeV with the ATLAS Detector Using the Matrix Element Method 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Abolins, M.; AbouZeid, O. S.; Izen, Joseph M.; Leyton, Michael; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Elsevier Science Bv, 2016-03-08)
      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 the Associated Production of the Higgs Boson and a Top Quark Pair with the ATLAS Detector 

      Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abidi, S. H.; AbouZeid, O. S.; Izen, Joseph M.; Meirose, Bernhard; Reeves, Kendall; ATLAS Collaboration
      A search for the associated production of the Higgs boson with a top quark pair (tt̅ H) is reported. The search is performed in multilepton final states using a data set corresponding to an integrated luminosity of 36.1 ...
    • Evidence for the Baryonic Decay B̅→ D⁰ΛΛ̅ 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Lou, Xinchou; Izen, Joseph M.; BaBar Collaboration (2014-06-06)
      Evidence is presented for the baryonic B meson decay B̅⁰ → D⁰ΛΛ̅ based on a data sample of 471 x 10⁶ BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric e⁺e⁻ collider located at the SLAC National Accelerator ...
    • Evidence for the Decay B⁰ → ωω and Search for B⁰ → ωφ 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Lou, Xinchou; Izen, Joseph M.; BaBar Collaboration (American Physical Society, 2014-03-05)
      We describe searches for B meson decays to the charmless vector-vector final states ωω and ωφ with 471 x 10⁶ BB̅ pairs produced in e⁺e⁻ annihilation at √s̅ = 10.58 GeV using the BABAR detector at the PEP-II collider at ...
    • Evidence for the H → bb̅ Decay with the ATLAS Detector 

      Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abidi, S. H.; AbouZeid, O. S.; Abraham, N. L.; Izen, Joseph M.; Meirose, Bernhard; Reeves, Kendall; ATLAS Collaboration (Springer, 2018-09-27)
      A search for the decay of the Standard Model Higgs boson into a bb̅ pair when produced in association with a W or Z boson is performed with the ATLAS detector. The analysed data, corresponding to an integrated luminosity ...
    • Evidence for the Higgs-Boson Yukawa Coupling to Tau Leptons with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Izen, Joseph M.; Leyton, Michael l; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Springer, 2015-04-21)
      Results of a search for H → ττ 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. The data correspond to integrated luminosities ...
    • Evidence of Wγγ Production in pp Collisions at √s̅ = 8 TeV and Limits on Anomalous Quartic Gauge Couplings with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Izen, Joseph M.; Leyton, Michael; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (American Physical Society, 2015-07-16)
      This Letter reports evidence of triple gauge boson production pp → W(ℓν)γγ + X, which is accessible for the first time with the 8 TeV LHC data set. The fiducial cross section for this process is measured in a data sample ...
    • Exclusive Measurements of b → sγ Transition Rate and Photon Energy Spectrum 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Palano, A.; Eigen, G.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-10-17)
      We use 429 fb⁻¹ of e⁺e⁻ collision data collected at the Υ(4S) resonance with the BABAR detector to measure the radiative transition rate of b → sγ with a sum of 38 exclusive final states. The inclusive branching fraction ...
    • Femtoscopy with Identified Charged Pions in Proton-Lead Collisions at √{S_{NN}}=5.02 TeV with ATLAS 

      Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; Aben, R.; Izen, Joseph M.; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Amer Physical Soc, 2018-09-24)
      Bose-Einstein correlations between identified charged pions are measured for p+Pb collisions at √{S_{NN}} = 5.02 TeV using data recorded by the ATLAS detector at the CERN Large Hadron Collider corresponding to a total ...
    • Fiducial and Differential Cross Sections of Higgs Boson Production Measured in the Four-Lepton Decay Channel in pp Collisions at √s̅ = 8 TeV with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Izen, Joseph M.; Leyton, Michael; Lou, Xinchou; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Elsevier B. V., 2014-09-28)
      Measurements of fiducial and differential cross sections of Higgs boson production in the H → ZZ* → 4ℓ decay channel are presented. The cross sections are determined within a fiducial phase space and corrected for detection ...
    • Fiducial, Total and Differential Cross-Section Measurements of T-Channel Single Top-Quark Production in pp Collisions at 8 TeV Using Data Collected by the ATLAS Detector 

      Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; AbouZeid, O. S.; Izen, Joseph M.; Meirose, Bernhard; Reeves, Kendall; Kurth, Matthew G.; Leyton, Michael; ATLAS Collaboration (Springer New York LLC, 2018-05-15)
      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 ...
    • First Observation of CP Violation in B̅⁰ → D{CP}^{*}h⁰ Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data 

      Abdesselam, A.; Adachi, I.; Adametz, A.; Adye, T.; Ahmed, H.; Aihara, H.; Akar, S.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration; Belle Collaboration (American Physical Society, 2015-05)
      We report a measurement of the time-dependent CP asymmetry of B̅⁰ → D{CP}^*h⁰ decays, where the light neutral hadron h⁰ is a π⁰, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K⁺K⁻, K⁰{s}π⁰ ...
    • High-E_T Isolated-Photon Plus Jets Production in pp Collisions at √s̅ = 8 TeV with the ATLAS Detector 

      Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; AbouZeid, O. S.; Izen, Joseph M.; Meirose, Bernhard; Reeves, Kendall; Kurth, Matthew G.; Leyton, Michael; ATLAS Collaboration (Springer New York LLC, 2018-05-15)
      Detailed measurements of t-channel single top-quark production are presented. They use 20.2 fb⁻¹ of data collected by the ATLAS experiment in proton–proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, ...
    • Identification and Energy Calibration of Hadronically Decaying Tau Leptons with the ATLAS Experiment in pp Collisions at √s̅ = 8 TeV 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Abi, B.; Izen, Joseph M.; Leyton, Michael |Lou, Xinchou; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Springer, 2015-05)
      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 ...