Study of selectron properties in the e~ e~ -> e- X_1^0 e- X_2^0 decay channel

Details Study of selectron properties in the e~ e~ -> e- X_1^0 e- X_2^0 decay channel Study of selectron properties in the e~ e~ -> e- X_1^0 e- X_2^0 decay channel

2003-12-10

arxiv.org/abs/hep-ph/0312140v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 18 pages. Contribution to the ECFA Study on Physics and Detectors for a Linear Collider. Small changes in 4 figures

Scientific paper

We discuss selectron pair production in e- e- scattering, in the processes e- e- -> e~_L e~_L, e~_R e~_R -> e- X_1^0 e- X_2^0 -> e- X_1^0 e- X_1^0 f f. This decay channel has in general a smaller branching ratio than the e~ e~ -> e- X_1^0 e- X_1^0 mode, but has the advantage that the momenta of all final state particles can be determined without using the selectron masses as input. The reconstruction of the momenta allows the simultaneous study of: (i) selectron mass distributions; (ii) selectron spins, via the angular distributions of the e- in the selectron rest frames; (iii) selectron masses andspins, using the e- energy distributions in the CM frame; (iv) the selectron "chirality", with the analysis of the spin of the produced X_2^0.

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