Exclusive interactions in p anti-p collisions at s**(1/2) = 1.96 TeV

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This thesis presents two exclusive production processes in p{bar p} collisions at {radical}s = 1.96 TeV, using the Collider Detector Facility at Fermi National Accelerator Laboratory. An observation of exclusive e{sup +}e{sup -} production through {gamma}{gamma} {yields} e{sup +}e{sup -} is presented, as well as evidence for exclusive production of {gamma}{gamma} through gg {yields} {gamma}{gamma} (via a quark loop). The exclusive e{sup +}e{sup -} production observation is based on 16 candidate events, with a background estimate of 2.1{sub -0.3}{sup +0.7}. Each event has an e{sup +}e{sup -} pair (E{sub T} (e) > 5 GeV, |{eta}(e)| < 2) and nothing else ... continued below

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82 pages

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Hamilton, Andrew & U., /Alberta May 1, 2006.

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This thesis presents two exclusive production processes in p{bar p} collisions at {radical}s = 1.96 TeV, using the Collider Detector Facility at Fermi National Accelerator Laboratory. An observation of exclusive e{sup +}e{sup -} production through {gamma}{gamma} {yields} e{sup +}e{sup -} is presented, as well as evidence for exclusive production of {gamma}{gamma} through gg {yields} {gamma}{gamma} (via a quark loop). The exclusive e{sup +}e{sup -} production observation is based on 16 candidate events, with a background estimate of 2.1{sub -0.3}{sup +0.7}. Each event has an e{sup +}e{sup -} pair (E{sub T} (e) > 5 GeV, |{eta}(e)| < 2) and nothing else observable in the CDF detector. The measured cross section is 1.6{sub -0.3}{sup +0.5}(stat) {+-} 0.3(sys) pb, while the predicted cross section is 1.711 {+-} 0.008 pb. The kinematic properties of the events are consistent with the predictions of the LPAIR Monte Carlo. The evidence for exclusive {gamma}{gamma} production consists of 3 candidate events, with a background estimate of 0.0{sub -0.0}{sup +0.2} events. Each event has two photons (E{sub T}{gamma}) > 5 GeV, |{eta}({gamma})| < 1 and nothing else observable in the CDF detector. The measured cross section for these events is 0.14{sub -0.04}{sup +0.14}(stat) {+-} (sys) pb. It agrees with the theoretical prediction of 0.04 pb with a factor 3 to 5 theoretical uncertainty.

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82 pages

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  • Report No.: FERMILAB-THESIS-2006-10
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 892299
  • Archival Resource Key: ark:/67531/metadc882831

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 1, 2006

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 7, 2016, 11:21 a.m.

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Hamilton, Andrew & U., /Alberta. Exclusive interactions in p anti-p collisions at s**(1/2) = 1.96 TeV, thesis or dissertation, May 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc882831/: accessed November 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.