We consider associated production of squarks and gluinos with the lightest supersymmetric particle (LSP), or states nearly degenerate in mass with it. Though sub-dominant to pair production of color SU(3)-charged superpartners, these processes are directly sensitive to the wavefunction composition of the lightest neutralinos. Exploiting event-shape variables - including some introduced here for the first time - we are able to identify the composition of the LSP by selecting events involving a single high-pT jet recoiling against missing transverse energy. We illustrate the proposed technique on a set of benchmark cases and propose methods for applying these results in more realistic experimental environments.
|Original language||American English|
|Number of pages||9|
|Journal||Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics|
|State||Published - 7 Sep 2011|
Bibliographical noteFunding Information:
We would very much like to thank Michael Holmes for assistance in the early stages of this work. This research was supported by National Science Foundation Grants PHY-0653587 and PHY-0757959 , and supported by the Michigan Center for Theoretical Physics (MCTP) and by Department of Energy grant DE-FG02-95ER40899 .