来自刘怀德的问题
electronofenergy20GeVisdeflectedthroughanangleof5degreesAnelectronofenergy20GeVisdeflectedthroughanangleof5degreesinanelasticcollisionwithastationaryproton.Whatisthevalueofthesquareofthe4-momentumtransfer,q^2?(Th
electronofenergy20GeVisdeflectedthroughanangleof5degrees
Anelectronofenergy20GeVisdeflectedthroughanangleof5degreesinanelasticcollisionwithastationaryproton.Whatisthevalueofthesquareofthe4-momentumtransfer,q^2?(Themassoftheelectroncanbeneglectedcomparedwiththeenergiesinvolved.TheprotonmassMc^2is0.938GeV.)
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2020-12-19 01:32