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Central pseudorapidity gaps in events with a leading antiproton at the fermilab tevatron pp collider
Authors:Acosta D  Affolder T  Akimoto H  Albrow M G  Ambrose D  Amidei D  Anikeev K  Antos J  Apollinari G  Arisawa T  Artikov A  Asakawa T  Ashmanskas W  Azfar F  Azzi-Bacchetta P  Bacchetta N  Bachacou H  Badgett W  Bailey S  De Barbaro P  Barbaro-Galtieri A  Barnes V E  Barnett B A  Baroiant S  Barone M  Bauer G  Bedeschi F  Behari S  Belforte S  Bell W H  Bellettini G  Bellinger J  Benjamin D  Bensinger J  Beretvas A  Berryhill J  Bhatti A  Binkley M  Bisello D  Bishai M  Blair R E  Blocker C  Bloom K  Blumenfeld B  Blusk S R  Bocci A  Bodek A  Bolla G  Bolshov A  Bonushkin Y  Bortoletto D  Boudreau J  Brandl A  Bromberg C  Brozovic M  Brubaker E
Affiliation:University of Florida, Gainesville, Florida 32611, USA.
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+p-->p+X. For a final state p of fractional momentum loss xi(p) and 4-momentum transfer squared t(p) within 0.063 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 pp collisions and with theoretical expectations.
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