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] GeV(2) 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.

Central pseudorapidity gaps in events with a leading antiproton at the Fermilab tevatron (p)over-barp collider / 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., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 91:(2003). [10.1103/physrevlett.91.011802]

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

DIONISI, Carlo;GIAGU, Stefano;IORI, Maurizio;
2003

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 0.063 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 (p) over barp collisions and with theoretical expectations.
2003
01 Pubblicazione su rivista::01a Articolo in rivista
Central pseudorapidity gaps in events with a leading antiproton at the Fermilab tevatron (p)over-barp collider / 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., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 91:(2003). [10.1103/physrevlett.91.011802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/104980
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