Now showing items 1-11 of 11

    • A Study of Abell 2146: Dark and Luminous 

      Coleman, Joseph E. (2018-05)
      The universe is a highly dynamic system. Under the primary influence of gravity, matter in the universe clumped together to create the structure we currently observe with our telescopes. Gravity formed objects on vastly ...
    • A Unified Relativistic Treatment of Tidal Disruption Events and a New Model for Self-Intersections Involving Tidal Debris Streams for Schwarzschild Black Holes 

      Servin, Juan E. (2018-08)
      This dissertation concerns the astrophysical phenomena known as tidal disruption events~(TDEs), where stars are ripped apart by gravitational tides from their host galaxies' central supermassive black hole~(SBH). Stars are ...
    • Branching fraction of τ-→π-Ks0Ks0(π0)ν 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 (American Physical Society, 2012-11-26)
      We present a study of τ -→π -KS0KS0(π0) ν τ and τ -→K -KS0KS0(π0) ν τ decays using a data set of 430 million tau lepton pairs, corresponding to an integrated luminosity of 468 fb(-1), collected with the BABAR detector ...
    • Measurement of the Inclusive Isolated Prompt Photons Cross Section in pp Collisions at √s=7 TeV with the ATLAS Detector Using 4.6 fb⁻¹ 

      Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Khalek, S. Abdel; Abdelalim, A. A.; Abdinov, O.; Wong, Wei-Cheng; Reeves, Kendall; Lou, Xinchou; Izen, Joseph M .; Namasivayam, Harisankar; ATLAS Collaboration (American Physical Society, 2014-03-24)
      A measurement of the cross section for the production of isolated prompt photons in pp collisions at a center-of-mass energy √s=7 TeV is presented. The results are based on an integrated luminosity of 4.6 fb⁻¹ collected ...
    • Measurement of the Proton Form Factor by Studying e⁺e⁻ → pp̅ 

      Ablikim, M.; Achasov, M. N.; Ai, X. C.; Albayrak, O.; Albrecht, M.; Ambrose, D. J.; Amoroso, A.; Lou, Xinchou; BESIII Collaboration (Amer Physical Soc, 2015-06-09)
      Using data samples collected with the BESIII detector at the BEPCII collider, we measure the Born cross section of e⁺e⁻ → pp̅ at 12 center-of-mass energies from 2232.4 to 3671.0 MeV. The corresponding effective electromagnetic ...
    • Measurement of the Semileptonic Branching Fraction of the B_s Meson 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Milanes, D. A.; Izen, Joseph M.; Lou, Xinchou (American Physical Society, 2012-01-03)
      We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BABAR detector in the center-of-mass energy region above the Υ(4S) resonance. We use the inclusive ...
    • 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 the Decay D⁰ → γγ and Measurement of the Branching Fraction for D⁰ → π⁰π⁰ 

      Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2012-05-18)
      We search for the rare decay of the D⁰ meson to two photons, D⁰ → γγ, and present a measurement of the branching fraction for a D⁰ meson decaying to two neutral pions, B(D⁰ → π⁰π⁰). The data sample analyzed corresponds ...
    • Search for the Z₁(4050)⁺ and Z₂(4250)⁺ States in B̅⁰→ χ_{c1}K⁻ π⁺ and B⁺ → χ_{c1}K_s⁰ π⁺ 

      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, 2012-03-16)
      We search for the Z₁(4050)⁺ and Z₂(4250)⁺ states, reported by the Belle Collaboration, decaying to χ_{c1}π⁺ in the decays B̅⁰ → χ_{c1}K⁻ π⁺ and B⁺ → χ_{c1}K_S⁰ π⁺ where χ_{c1} → J/ψγ. The data were collected with the ...
    • Studies of Baryonic Physics and Triaxiality in Galaxy Clusters 

      Lee, Brandyn Emmerson (2018-12)
      This dissertation concerns the impact of baryonic physics and triaxiality on galaxy clusters. The first and primary portion of this work is to investigate the impact baryonic processes have on galaxy cluster masses, ...
    • Testing the Dark Sector Versus Modified Gravity Models in Cosmology 

      Lin, Weikang (2018-08)
      This dissertation studies cosmological and astrophysical tests of gravity theories and the dark sectors. We focus on three tests. All of them are promising for future observations. The first test is about tensor-mode ...