Pair Production Of Heavy Leptons Research Articles

Pair production of heavy leptons and their spin

The spin of the heavy lepton L discovered at SPEAR is discussed. Only if a neutral vector meson X with mass approximately equal to 3.1 GeV and appropriate couplings to electrons and heavy leptons exists, could its spin be 3/2. As a test of the existence of this vector meson a search for the reaction Open image in new window atW≳7.5 is proposed. A detailed study of the angular distribution of e+e− → L+L− at intermediate energies could also discriminate between spin 1/2 and 3/2. The decay angular distribution of L → πνL as a method of measuring both the heavy-lepton spin and the spin of the corresponding neutrino νL is discussed in a note.

On the hadron-parton reciprocity relation

The possibility of an equality between the distributions of partons inside hadrons and the distributions of hadrons in parton fragmentation is studied. It is consistent with existing electroproduction data when the momentum fractions involved are not too small. Implications for current-hadron interactions, large p T hadronic cross sections and heavy lepton pair production in hadron-hadron collisons are discussed.

Two high energy processes involving detected final state particles

Two processes are discussed: (a) semi-inclusive electroproduction experiments; (b) heavy-lepton pair production in hadronic collisions. The non-perturbative approach to the parton model is used to evaluate scaling properties and to consider extra contributions due to wee partons. These latter have not been previously discussed and are found to be important for process (b), but absent in process (a). Quantitative agreement is obtained for process (b), including an explanation of the observed shoulder in the differential cross section.