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Central pseudorapidity gaps in events with a leading antiproton at the Fermilab tevatron (p)over-barp collider

Acosta, D; Affolder, T; Akimoto, H; Albrow, MG; Ambrose, D; Amidei, D; Anikeev, K; ... CDF Collaboration; + view all (2003) Central pseudorapidity gaps in events with a leading antiproton at the Fermilab tevatron (p)over-barp collider. PHYS REV LETT , 91 (1) , Article 011802. 10.1103/PhysRevLett.91.011802. Green open access

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Abstract

We report a measurement of the fraction of events with a large pseudorapidity gap Deltaeta within the pseudorapidity region available to the proton dissociation products X in (p) over bar +p-->(p) over bar +X. For a final state (p) over bar of fractional momentum loss xi((p) over bar) and 4-momentum transfer squared t((p) over bar) within 0.06<xi(p $$($) over bar)<0.09 and \t((p) over bar)\<1.0 [0.2] GeV2 at roots=1800 [630] GeV, the fraction of events with Deltaeta>3 is found to be 0.246+/-0.001 (stat)+/-0.042 (syst) [0.184+/-0.001 (stat)+/-0.043 (syst)]. Our results are compared with gap fractions measured in minimum bias (p) over barp collisions and with theoretical expectations.

Type: Article
Title: Central pseudorapidity gaps in events with a leading antiproton at the Fermilab tevatron (p)over-barp collider
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.91.011802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.91.011802
Language: English
Additional information: © 2003 The American Physical Society
Keywords: DIFFRACTION, POMERON, ROOT-S=546, COLLISIONS, PROTON
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/145084
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