Now showing items 138-157 of 231

    • Reconstruction of Physics Objects at the Circular Electron Positron Collider with Arbor 

      Ruan, Manqi; Zhao, Hang; Li, Gang; Fu, Chengdong; Wang, Zhigang; Lou, Xinchou; Yu, Dan; Boudry, Vincent; Videau, Henri; Balagura, Vladislav; Brient, Jean-Claude; Lai, Peizhu; Kuo, Chia-Ming; Liu, Bo; An, Fenfen; Chen, Chunhui; Prell, Soeren; Li, Bo; Laketineh, Imad
      After the Higgs discovery, precise measurements of the Higgs properties and the electroweak observables become vital for the experimental particle physics. A powerful Higgs/Z factory, the Circular Electron Positron Collider ...
    • Search for a Dark Photon in e⁺e⁻ Collisions at Babar 

      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, 2014-11-10)
      Dark sectors charged under a new Abelian interaction have recently received much attention in the context of dark matter models. These models introduce a light new mediator, the so-called dark photon (A′), connecting the ...
    • Search for a Light CP -odd Higgs Boson in Radiative Decays of J/ψ 

      Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (American Physical Society, 2016-03-03)
      We search for a light Higgs boson A⁰ in the fully reconstructed decay chain of J/ψ → γA⁰, A⁰ → μ⁺μ⁻ using (225.0 ± 2.8) ×106 J/ψ events collected by the BESIII experiment. The A⁰ is a hypothetical CP-odd light Higgs boson ...
    • Search for a Light Higgs Boson Decaying to Two Gluons or ss̅ in the Radiative Decays of ϒ(1s) 

      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, 2013-08-06)
      We search for the decay ϒ(1s) → γA⁰, A⁰ → gg or ss̅, where A⁰ is the pseudoscalar light Higgs boson predicted by the next-to-minimal supersymmetric Standard Model. We use a sample of (17.6 ± 0.3) x10⁶ ϒ(1s) mesons produced ...
    • Search for a Light Higgs Resonance in Radiative Decays of the ϒ(1S) with a Charm Tag 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou (American Physical Society, 2015-04-10)
      A search is presented for the decay ϒ(1S)→γA⁰, A⁰→cc̅, where A⁰ is a candidate for the CP-odd Higgs boson of the next-to-minimal supersymmetric standard model. The search is based on data collected with the BABAR detector ...
    • Search for a Low-Mass Scalar Higgs Boson Decaying to a Tau Pair in Single-Photon Decays of ϒ(1s) 

      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, 2013-10-10)
      We search for a low-mass scalar CP-odd Higgs boson, A⁰, produced in the radiative decay of the upsilon resonance and decaying into a τ⁺τ⁻ pair: ϒ(1S)→γA⁰. The production of ϒ(1S) mesons is tagged by ϒ(2S) π⁺π⁻ ϒ(1S) ...
    • Search for a Supersymmetric Partner to the Top Quark in Final States with Jets and Missing Transverse Momentum at √s̅ = 7TeV with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Abolins, M.; AbouZeid, O. S.; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration; Ashan, Mahsana (American Physical Society, 2012-11-20)
      A search for direct pair production of supersymmetric top squarks (t 1) is presented, assuming the t1 decays into a top quark and the lightest supersymmetric particle, χ10, and that both top quarks decay to purely hadronic ...
    • Search for B̄→Λ_c⁺Xℓ⁻ν̅_ℓ decays in Events with a Fully Reconstructed B Meson 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-01-12)
      We present a search for semileptonic B decays to the charmed baryon Λc+ based on 420fb -1 of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e +e - storage rings. By fully reconstructing the ...
    • Search for B⁺→ K⁺τ⁺τ⁻ at the Babar Experiment 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Brown, D. N.; Izen, Joseph M.; Lou, Xinchou (American Physical Society, 2018-08-24)
      We search for the rare flavor-changing neutral current process B⁺→ K⁺τ⁺τ⁻ using data from the BABAR experiment. The data sample, collected at the center-of-mass energy of the Υ(4S) resonance, corresponds to a total integrated ...
    • Search for B→K^{(*)}νν̅ and Invisible Quarkonium Decays 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou (American Physical Society, 2013-06-05)
      We search for the flavor-changing neutral-current decays B→K^{(*)}νν¯, and the invisible decays J/ψ→νν̅ and ψ(2S)→νν̅ via B→K^{(*)}J/ψ and B→K^{(*)}ψ(2S), respectively, using a data sample of 471×10⁶ BB̅ pairs collected ...
    • Search for C-Parity Violation in J/ψ → γγ and γϕ 

      Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (Amer Physical Soc, 2014-11-03)
      Using 1.06 x 10⁸ ψ(3686) events recorded in e⁺e⁻ collisions at √s = 3.686 GeV with the BESIII at the BEPCII collider, we present searches for C-parity violation in J/ψ → γγ and γϕ decays via ψ(3686) → J/ψ π⁺π⁻. No significant ...
    • Search for Contact Interactions and Large Extra Dimensions in the Dilepton Channel Using Proton−Proton Collisions at √s = 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 (Springer New York LLC, 2014-12-11)
      A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton−proton collision dataset ...
    • Search for CP Violation in B⁰- B̅⁰ Mixing Using Partial Reconstruction of B⁰ → D*‾ Xℓ⁺ νℓ and a Kaon Tag 

      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, 2013-09-03)
      We present results of a search for CP violation in B⁰- B̅⁰ mixing with the BABAR detector. We select a sample of B⁰ → D*‾ Xℓ⁺ν decays with a partial reconstruction method and use kaon tagging to assess the flavor of the ...
    • Search for CP Violation in the Decay τ⁻ → π⁻ K_S⁰(0π⁰)ν_τ 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-02-13)
      We report a search for CP violation in the decay τ⁻ → π⁻ K_S⁰ (0π⁰)ν_τ using a data set of 437×106 τ-lepton pairs, corresponding to an integrated luminosity of 476 fb⁻¹, collected with the BABAR detector at the PEP-II ...
    • Search for Dark Matter Candidates and Large Extra Dimensions in Events with a Photon and Missing Transverse Momentum in pp Collision Data at √s̅ = 7 TeV with the ATLAS Detector 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Khalek, S. A.; Abdelalim, A. A.; Abdinov, O.; Ahsan, Mahsana; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration (American Physical Society, 2013-01-03)
      Results of a search for new phenomena in events with an energetic photon and large missing transverse momentum in proton-proton collisions at √s̅ = 7 TeV are reported. Data collected by the ATLAS experiment at the LHC ...
    • Search for Dark Matter in Events with a Hadronically Decaying W or Z Boson and Missing Transverse Momentum in pp Collisions at √s̅ = 8 TeV with the ATLAS Detector 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Khalek, S. Abdel; Abdinov, O.; Aben, R.; Ahsan, Mahsana; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; Namasivayam, Harisankar; ATLAS Collaboration (American Physical Society, 2014-01-29)
      A search is presented for dark matter pair production in association with a W or Z boson in pp collisions representing 20.3 fb(-1) of integrated luminosity at √s = 8 TeV using data recorded with the ATLAS detector at the ...
    • Search for Dark Matter in Events with a Z Boson and Missing Transverse Momentum in pp Collisions at √s=8 TeV with the ATLAS Detector 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Leyton, Michael; Namasivayam, Harisankar; ATLAS Collaboration (American Physical Society, 2014-07-10)
      A search is presented for production of dark-matter particles recoiling against a leptonically decaying Z boson in 20.3 fb⁻¹ of pp collisions at √s=8 TeV with the ATLAS detector at the Large Hadron Collider. Events with ...
    • Search for Dark Matter in Events with Heavy Quarks and Missing Transverse Momentum in pp Collisions 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; Meirose, Bernhard; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Springer, 2015-02-24)
      This article reports on a search for dark matter pair production in association with bottom or top quarks in 20.3 fb⁻¹ of pp collisions collected at √s = 8 TeV by the ATLAS detector at the LHC. Events with large missing ...
    • Search for Direct Production of Charginos, Neutralinos and Sleptons in Final States with Two Leptons and Missing Transverse Momentum in pp Collisions at √s=8 TeV with the ATLAS Detector 

      Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Aben, R.; Izen, Joseph M.; Leyton, Michael; Lou, Xinchou; Namasivayam, Harisankar; Reeves, Kendall; ATLAS Collaboration (Springer, 2014-05-16)
      Searches for the electroweak production of charginos, neutralinos and sleptons in final states characterized by the presence of two leptons (electrons and muons) and missing transverse momentum are performed using 20.3 ...
    • Search for Direct Third-Generation Squark Pair Production in Final States with Missing Transverse Momentum and Two B-Jets in pp Collisions with the ATLAS Detector 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Khalek, S. A.; Abdinov, O.; Aben, R.; Ahsan, Mahsana; Izen, Joseph M.; Lou, Xinchou; Reeves, Kendall; Wong, Wei-Cheng; ATLAS Collaboration (Springer, 2013-10-29)
      The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb-1of pp collisions at √s̅ = 8 TeV collected by the ATLAS experiment ...