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Measurement of inclusive isolated prompt photon production at center of mass energy = 7 TeV with the ATLAS.
- Format:
- Book
- Thesis/Dissertation
- Author/Creator:
- Hance, Michael.
- Language:
- English
- Subjects (All):
- Particles (Nuclear physics).
- 0798.
- Local Subjects:
- 0798.
- Physical Description:
- 207 pages
- Contained In:
- Dissertation Abstracts International 73-03B.
- System Details:
- Mode of access: World Wide Web.
- text file
- Summary:
- Prompt photons at hadron colliders are useful probes of perturbative quantum chromodynamics (pQCD), and are also found in signatures of new physics. A precise measurement of prompt photon production is both a useful test of theoretical models as well as an important step towards understanding final states that contain energetic photons. This thesis presents a measurement of the inclusive isolated prompt photon production cross section in proton-proton collisions at a center-of-mass energy of s = 7 TeV. The data are collected with the ATLAS detector at the Large Hadron Collider, and correspond to 35 pb-1 of integrated luminosity. The measurement is made in four photon pseudorapidity (etagamma) regions: 0 ≤ |etagamma| < 0.6; 0.6 ≤ |etagamma| < 1.37; 1.52 ≤ |eta gamma| < 1.81; and 1.81 ≤ |etagamma| < 2.37; and covers photon transverse energies ( EgT ) in the range 15 GeV ≤ EgT < 400 GeV. Photon candidates are reconstructed and identified through the use of the ATLAS calorimeter and tracking systems. The residual background, primarily from neutral meson decays, is estimated using in-situ techniques based on observed distributions of the total transverse energy in a narrow cone around the photon candidate. The measurements are compared to predictions from next-to-leading order pQCD calculations, with good agreement for photon transverse energies greater than 25 GeV.
- Notes:
- Source: Dissertation Abstracts International, Volume: 73-03, Section: B, page: .
- Adviser: H.H. Williams.
- Thesis (Ph.D.)--University of Pennsylvania, 2011.
- Local Notes:
- School code: 0175.
- ISBN:
- 9781267026330
- Access Restriction:
- Restricted for use by site license.
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