A pr 1 99 3 TIFR / TH / 93 - 14 R - PARITY VIOLATING SUSY MODEL

X iv : h ep - p h / 96 04 24 4 v 1 4 A pr 1 99 6 LEP Sensitivities to Spontaneous R - Parity Violating Signals

We illustrate the sensitivities of LEP experiments to leptonic signals associated to models where supersymmetry (SUSY) is realized with spontaneous breaking of R-parity. We focus on missing transverse momentum plus acoplanar muon events (p /T + μ μ) arising from lightest neutralino single production χν as well as pair production χχ, followed by χ decays, where χ denotes the lightest neutralino....

/ 93 03 32 5 v 1 1 A pr 1 99 3 TIFR / TH / 93 - 10 Radiative Electroweak Parameters

The status of the present precision measurements of electroweak observables is reviewed with specific reference to the radiative parameters S, T, U or equivalently ǫ1, ǫ2, ǫ3. The significance of the obliqueness hypothesis is underlined and the importance of the “local fit” method of extracting these parameters from the data is emphasized. Possible new physics implications are briefly touched u...

ar X iv : h ep - p h / 99 04 33 5 v 1 1 4 A pr 1 99 9 Constraints on R - parity

The tree-level contributions to the flavor violating μ − e conversion in a nucleus are derived in the minimal supersymmetric model with general case of R-parity violation including the trilinear and the bilinear R-parity violating terms in the superpotential and in the soft supersymmetry breaking sector. Calculating the μ − e conversion rate we consistently take into account the nucleon and nuc...

5 v 1 1 A pr 1 99 3 TIFR / TH / 93 - 10 Radiative Electroweak Parameters

The status of the present precision measurements of electroweak observables is reviewed with specific reference to the radiative parameters S, T, U or equivalently ǫ1, ǫ2, ǫ3. The significance of the obliqueness hypothesis is underlined and the importance of the “local fit” method of extracting these parameters from the data is emphasized. Possible new physics implications are briefly touched u...

ar X iv : h ep - p h / 93 10 21 3 v 1 4 O ct 1 99 3 TIFR / TH / 93 - 40 ELECTROWEAK PROCESSES AND PRECISION TESTS 1