Supersymmetry phenomenology with spontaneous R parity breaking in Z0 decays

Nogueira, P.; Romão, Jorge C.; Valle, J. W. F.

doi:10.1016/0370-2693(90)90244-z

Cited by 47 publications

(49 citation statements)

References 42 publications

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“…Neutrino masses and mixing angles are calculable and agree with experimental measurements [10,11]. Motivations for BRpV are for example, models with spontaneously broken R-Parity [12], and a model with an anomalous horizontal U(1) symmetry [13], where BRpV appears without trilinear R-Parity violation.…”

Section: Introductionsupporting

confidence: 59%

“…We keep fixed the values of the BRpV parameters ǫ i and Λ i given eq. (12). The two neutrino mass differences are clearly proportional to each other highlighting their common origin represented by eq.…”

Section: Numerical Resultsmentioning

confidence: 80%

“…We look for solutions to neutrino physics with different values of the BRpV parameters ǫ i and Λ i , but concentrate our attention in the particular solution given in eq. (12).…”

Section: Numerical Resultsmentioning

confidence: 99%

“…(14) are explained by the fact that Λ 1 has a numerical value smaller than the other three relevant parameters, as can be seen from eq. (12). Finally, the parameter a in eq.…”

Section: One Loop Contributionsmentioning

confidence: 99%

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Study of a neutrino mass texture generated in supergravity with bilinear R-parity violation

2005

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We study a particular texture of the neutrino mass matrix generated in supergravity with bilinear R-Parity violation. The relatively high value of tan β makes the one-loop contribution to the neutrino mass matrix as important as the tree-level one. The atmospheric angle is nearly maximal, and its deviation from maximal mixing is related to the smallness of the ratio between the solar and atmospheric mass scales. There is also a common origin for the small values of the solar and reactor angles, but the later is much smaller due the large mass ratio between the lightest two neutrinos. There is a high dependence of the neutrino mass differences on the scalar mass m 0 and the gaugino mass M 1/2 , but a smaller one of the mixing angles on the same sugra parameters. Measurements of branching ratios for the neutralino decays can give important information on the parameters of the model. There are good prospects at a future Linear Collider for these measurements, but a more detailed analysis is necessary for the LHC.

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Section: Introductionsupporting

confidence: 59%

Section: Numerical Resultsmentioning

confidence: 80%

“…We look for solutions to neutrino physics with different values of the BRpV parameters ǫ i and Λ i , but concentrate our attention in the particular solution given in eq. (12).…”

Section: Numerical Resultsmentioning

confidence: 99%

“…(14) are explained by the fact that Λ 1 has a numerical value smaller than the other three relevant parameters, as can be seen from eq. (12). Finally, the parameter a in eq.…”

Section: One Loop Contributionsmentioning

confidence: 99%

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Study of a neutrino mass texture generated in supergravity with bilinear R-parity violation

2005

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“…For simplicity these effects are usually studied assuming that there is only one dominant term which breaks R-parity explicitly. In contrast, models with spontaneous R-parity breaking [9,10,11,12] depend on much fewer parameters, which allow a more systematic study of R-parity breaking signals. Moreover, in these models the scale of R-parity violation is expected to lie in the TeV range [9].…”

Section: Introductionmentioning

confidence: 99%

Signatures of spontaneous breaking of R-parity in gluino cascade decays at LHC

et al. 1997

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We study the pattern of gluino cascade decays in a class of supersymmetric models where R-parity is spontaneously broken. We give a detailed discussion of the R-parity violating decays of the lightest neutralino, the second lightest neutralino and the lightest chargino. The multi-lepton and samesign dilepton signal rates expected in these models are compared with those predicted in the Minimal Supersymmetric Standard Model. We show that these rates can be substantially enhanced in broken R-parity models.

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Solving the Solar and Atmospheric Neutrino Problems with Supersymmetry

Romão¹

2001

Recent Developments in Particle Physics and Cosmology

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Abstract. The simplest unified extension of the Minimal Supersymmetric Standard Model with bi-linear R-Parity violation provides a predictive scheme for neutrino masses which can account for the observed atmospheric and solar neutrino anomalies. Despite the smallness of neutrino masses Rparity violation is observable at present and future high-energy colliders, providing an unambiguous cross-check of the model.

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Supersymmetry phenomenology with spontaneous R parity breaking in Z0 decays

Cited by 47 publications

References 42 publications

Study of a neutrino mass texture generated in supergravity with bilinear R-parity violation

Study of a neutrino mass texture generated in supergravity with bilinear R-parity violation

Signatures of spontaneous breaking of R-parity in gluino cascade decays at LHC

Solving the Solar and Atmospheric Neutrino Problems with Supersymmetry

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