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7
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84927480804
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D0 Collaboration, Report No. Fermilab Conf 94 290 E, 1994 (unpublished);
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19
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0005707524
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Search for massive, unstable photinos that violate R parity
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Bounds on unstable photinos which can be produced at LEP via t channel selectron exchange have been studied in the context of an L violating model by OPAL Collaboration
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(1993)
Physics Letters B
, vol.313
, pp. 333
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Acton, P.1
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28
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84927501663
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If all R parity violating couplings are small enough, they do not make significant contributions (via renormalization effects) to sparticle masses and mixings. Thus sparticle mass patterns are not significantly modified from minimal model expectations.
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29
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0001115285
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It was thought that cosmological arguments requiring GUT scale baryogenesis not get washed out require that the λ'' type couplings are alt 10-7. It has since been shown [see, e.g., ] that these bounds are model dependent and can be avoided in reasonable scenarios.
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(1993)
Nucl. Phys.
, vol.210 B
, pp. 188
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Dreiner, H.1
Ross, G.2
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33
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0002562326
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Because of intergenerational mixing there should be (weaker) bounds on the other λ'' couplings (especially on λ''212) than the one on λ''112 obtained in Ref. citeZWIRN. The important thing is that several of these couplings may be large enough so that the LSP would decay within the detector. There is essentially no experimental bound on the λ''223 coupling [upper bounds obtained by requiring that the B violating couplings remain perturbative up to a GUT scale do not lead to interesting phenomenological constraints, as discussed by, ]. If this coupling dominates B violating interactions, signatures would be very similar to the ones we discuss, with the d quark in the LSP being replaced by a b. Except that an accidently nonisolated lepton would occasionally contribute to the leptonic signals discussed below, the signals we discuss are quite insensitive to the flavor structure of the B violating interactionwe do not consider the possibility of tagging the b [Truncated]
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(1994)
Phys. Rev. D
, vol.50
, pp. 39
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Brahmachari, B.1
Roy, P.2
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36
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84927498886
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F. Paige and S. Protopopescu, in Supercollider Physics, Proceedings of the Conference, Eugene, Oregon, 1985, edited by D. Soper (World Scientific, Singapore, 1986), p. 41; H. Baer, F. Paige, S. Protopopescu, and X. Tata, in Proceedings of the Workshop on Physics at Current Accelerators and the Supercollider, edited by J. Hewett, A. White, and D. Zeppenfeld [Argonne National Laboratory Report No. ANL HEP CP 93 92, 1993 (unpublished)].
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41
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84927494174
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have argued that Drell Yan + jet production, where a fluctuation causes the jet to be misidentified as a lepton is the leading background to the trilepton sample. We have not included this (detector dependent) background in Table I, since it may be possible to eliminate it with a modest E llap/T cut with just a small loss of signal (except perhaps in the case where R parity conservation is broken by B violating operators).
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42
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84927500766
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The impact of R parity violation on the isolated like sign dilepton signal at hadron supercolliders has been discussed by J. Gunion and P. Binetruy, Davis University Report No. UCD 88 32, 1988 (unpublished);
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