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Phenomenological study of the interactions violating the R-parity symmetry in the supersymmetric theories | | G. Moreau
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13 Dec 2000 | | Subject: | hep-ph | | Abstract: | The supersymmetric extension of the Standard Model can contain interactions violating the so-called R-parity symmetry. Such couplings would lead to the lepton and/or baryon number violation and modify deeply the phenomenology of supersymmetry at future particle colliders. We have worked out tests of the R-parity violating interactions. First, we have studied clear signals of the single production of supersymmetric partners of the Standard Model particles, which involves the R-parity violating interactions, in the context of physics at next leptonic and hadronic colliders. The results show that strong sensitivities could be obtained on the soft supersymmetry breaking parameters and indicate the possibility of an improvement of one to two order of magnitude concerning the present indirect limits on the values of several R-parity violating coupling constants. Besides, it has been verified that the single superpartner production analysis offers the opportunity to reconstruct in a model independent way some superpartner masses with an high accuracy. Secondly, we have studied CP symmetry violation effects, due to the complex phases of R-parity violating coupling constants, in the pair production of either fermions or sfermions of different flavors at future leptonic colliders. We have seen notably that the single top quark production allows to test the CP violation in the hadronic sector. The main conclusion of these works is that complex phases of certain R-parity violating coupling constants could be observed, and in particular within a scenario where those couplings would exhibit a strong hierarchy in flavor space. | | Source: | arXiv, hep-ph/0012156 | | Services: | Forum | Review | PDF | Favorites | |
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