Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-12-02
JHEP 1103:103,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
28 pages, 11 figures
Scientific paper
10.1007/JHEP03(2011)103
Renormalizable quartic couplings among new particles are typical of supersymmetric models. Their detection could provide a test for supersymmetry, discriminating it from other extensions of the Standard Model. Quartic couplings among squarks and sleptons, together with the SU(3) gauge couplings for squarks, allow a new realization of the gluon-fusion mechanism for pair-production of sleptons at the one-loop level. The corresponding production cross section, however, is at most of ${\cal O}(1) $fb for slepton and squark masses of ${\cal O}(100) $GeV. We then extend our investigation to the gluon-fusion production of sleptons through the exchange of Higgs bosons. The cross section is even smaller, of ${\cal O}(0.1) $fb, if the exchanged Higgs boson is considerably below the slepton-pair threshold, but it is enhanced when it is resonant. It can reach ${\cal O}(10) $fb for the production of sleptons of same-chirality, exceeding these values for $\widetilde{\tau}$'s of opposite-chirality, even when chirality-mixing terms in the squark sector are vanishing. The cross section can be further enhanced if these mixing terms are nonnegligible, providing a potentially interesting probe of the Higgs sector, in particular of parameters such as $A$, $\mu$, and $\tan\beta$.
Borzumati Francesca
Hagiwara Kaoru
No associations
LandOfFree
Testing supersymmetry at the LHC through gluon-fusion production of a slepton pair does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Testing supersymmetry at the LHC through gluon-fusion production of a slepton pair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Testing supersymmetry at the LHC through gluon-fusion production of a slepton pair will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-510044