Special supersymmetric features of stop-chargino production at LHC

Abstract : The process of stop-chargino production at LHC has been calculated in the Minimal Supersymmetric Standard Model at the complete electroweak 1-loop level, assuming a mSUGRA symmetry breaking scheme. Several remarkable properties of the angular and invariant mass distributions of the basic $b~g\to\tilde{t}_a~ \chi^-_i$ amplitudes have been derived. For a vast collection of different benchmark points the overall 1-loop effects are of the order of a relative few percent. From a partial scanning of single parameters performed at Born level, a strong dependence of the rates on the stop mixing angle and a correlation with tanbeta have been evidentiated.
Document type :
Preprints, Working Papers, ...
08-074. 25 pages, 9 figures, minor changes, corrected typos. 2008


https://hal.archives-ouvertes.fr/hal-00349202
Contributor : Logiciel Aigle <>
Submitted on : Wednesday, December 24, 2008 - 11:40:13 AM
Last modification on : Tuesday, March 24, 2009 - 7:20:03 PM

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  • HAL Id : hal-00349202, version 1
  • ARXIV : 0812.4375

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M. Beccaria, G. Macorini, L. Panizzi, Fernand Michel Renard, C. Verzegnassi. Special supersymmetric features of stop-chargino production at LHC. 08-074. 25 pages, 9 figures, minor changes, corrected typos. 2008. <hal-00349202>

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