Jirim kuark - mikroskopi elektron attoskala ke atas proton

Details Jirim kuark - mikroskopi elektron attoskala ke atas proton Jirim kuark - mikroskopi elektron attoskala ke atas proton

2008-03-11

arxiv.org/abs/0803.1617v1

AIPConf.Proc.1017:10-17,2008

Physics

High Energy Physics

High Energy Physics - Experiment

"Quark matter - attoscale electron microscopy of the proton". In Malay. Invited plenary paper at Persidangan Fizik Kebangsaan

Scientific paper

10.1063/1.2940608

We review experiments colliding electrons(/positrons) on protons at high energies at HERA, focussing on the ZEUS experiment. We describe the ZEUS detector, including its data acquisition system, and look at a specific part, namely the electronic system for its calorimeter readout control, in more detail. Data analysis is described, and results pertaining the proton structure is given. It is found that the naive quark model cannot explain the results obtained at small fractional momentum, and this requires quantum chromodynamics. Also it is found that diffractive reactions, with large rapidity gaps, contribute substantially; efforts are being carried out to understand them.

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