A Measurement of the Proton-proton Inelastic Scattering Cross-section at Sqrt(s) PDF Download
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Author: Lauren Alexandra Tompkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 356
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Book Description
The first measurement of the inelastic cross-section for proton-proton collisions at a center of mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider is presented. From a dataset corresponding to an integrated luminosity of 20 inverse microbarns, events are selected by requiring activity in scintillation counters mounted in the forward region of the ATLAS detector. An inelastic cross-section of 60.1 +/- 2.1 millibarns is measured for the subset of events visible to the scintillation counters. The uncertainty includes the statistical and systematic uncertainty on the measurement. The visible events satisfy [xi]> 5\times 10-6, where [xi]=MX2/s is calculated from the invariant mass, MX, of hadrons selected using the largest rapidity gap in the event. For diffractive events this corresponds to requiring at least one of the dissociation masses to be larger than 15.7~GeV. Using an extrapolation dependent on the model for the differential diffractive mass distribution, an inelastic cross-section of 69.1 +/- 2.4 (exp) +/- 6.9 (extr) millibarns is determined, where (exp) indicates the experimental uncertainties and (extr) indicates the uncertainty due to the extrapolation from the limited [xi]-range to the full inelastic cross-section.
Author: Lauren Alexandra Tompkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 356
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Book Description
The first measurement of the inelastic cross-section for proton-proton collisions at a center of mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider is presented. From a dataset corresponding to an integrated luminosity of 20 inverse microbarns, events are selected by requiring activity in scintillation counters mounted in the forward region of the ATLAS detector. An inelastic cross-section of 60.1 +/- 2.1 millibarns is measured for the subset of events visible to the scintillation counters. The uncertainty includes the statistical and systematic uncertainty on the measurement. The visible events satisfy [xi]> 5\times 10-6, where [xi]=MX2/s is calculated from the invariant mass, MX, of hadrons selected using the largest rapidity gap in the event. For diffractive events this corresponds to requiring at least one of the dissociation masses to be larger than 15.7~GeV. Using an extrapolation dependent on the model for the differential diffractive mass distribution, an inelastic cross-section of 69.1 +/- 2.4 (exp) +/- 6.9 (extr) millibarns is determined, where (exp) indicates the experimental uncertainties and (extr) indicates the uncertainty due to the extrapolation from the limited [xi]-range to the full inelastic cross-section.
Author:
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ISBN:
Category :
Languages : en
Pages : 6
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Author:
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ISBN:
Category :
Languages : en
Pages : 48
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Author: Haibo Zhang
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ISBN:
Category :
Languages : en
Pages : 542
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Author: Mac Donald Mestayer
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ISBN:
Category : Electrons
Languages : en
Pages : 360
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Author:
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ISBN:
Category :
Languages : en
Pages :
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Author:
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ISBN:
Category :
Languages : en
Pages : 5
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The differential cross section for proton-proton elastic scattering has been measured at a beam kinetic energy of 1.0 GeV and in 200 MeV steps from 1.6 to 2.8 GeV for centre-of-mass angles in the range from 12°-16° to 25°-30°, depending on the energy. A precision in the overall normalisation of typically 3% was achieved by studying the energy losses of the circulating beam of the COSY storage ring as it passed repeatedly through the windowless hydrogen target of the ANKE magnetic spectrometer. It is shown that the data have a significant impact upon the results of a partial wave analysis. Furthermore, after extrapolating the differential cross sections to the forward direction, the results are broadly compatible with the predictions of forward dispersion relations.
Author: Silhacène Aïd
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ISBN:
Category : Muons
Languages : en
Pages : 392
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Author: Shew-Kuey Mark
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Category :
Languages : en
Pages :
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"A simple semi-classical calculation of direct inelastic scattering of protons by atomic nuclei is performed. The method employed is based on the Impulse Approximation and the variable density Fermi gas model with a diffuse surface. Only those nucleons in the surface of the target nucleus are considered to be capable of contributing to direct interactions. Total inelastic scattering cross sections are presented, and then used to analyze the (p pxn) reaction cross sections of Au197. The method followed is essentially that already proposed by Kavanagh and Bell. Contributions from direct processes inside the nuclear volume have been accounted for by adding the results of Jackson, and Compound nucleus contributions have been ignored. Good agreement between calculations and experiment has been obtained." --
Author: Alan Neil Anderson
Publisher:
ISBN:
Category : Protons
Languages : en
Pages : 310
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