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...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| 格式: | Journal article |
| 语言: | English |
| 出版: |
2003
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| 总结: | 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> |
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