Central pseudorapidity gaps in events with a leading antiproton at the fermilab tevatron pp collider.

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 0.06<x...

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Bibliographic Details
Main Authors:	Acosta, D, Affolder, T, Akimoto, H, Albrow, MG, 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, Barnett, B, Baroiant, S, Barone, M
Format:	Journal article
Language:	English
Published:	2003

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Summary:	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 0.06<xi(p)<0.09 [0.2]="" [630]="" and="" at="" deltaeta="" events="" fraction="" gev,="" gev2="" of="" sqrt[s]="1800" the="" with="" \|t(p)\|<1.0="">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 pp collisions and with theoretical expectations.</xi(p)<0.09>

Central pseudorapidity gaps in events with a leading antiproton at the fermilab tevatron pp collider.

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