CP violation beyond the standard model and tau pair production in e+e− collisions [Phys. Lett. B 391 (1997) 413]

This review paper stresses the possible connection between time-reversal violation and new physics processes beyond the standard model. In particular, this violation is proposed as an alternative to CP violation in the search for such unkown processes. Emphasis is put on the weak decays of heavy hadrons, especially beauty ones. Specific methods for extracting useful parameters from experimental data are elaborated in order to test TR symmetry. These methods could be used successfully in the analysis of the LHC data.

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A CRITICAL LOOK AT PRECISION ELECTROWEAK DATA AT HIGH ENERGY—A HINT FOR PHYSICS BEYOND THE STANDARD MODEL?

Modern Physics Letters A ◽

10.1142/s0217732394003129 ◽

1994 ◽

Vol 09 (35) ◽

pp. 3301-3312

Author(s):

A. GURTU

Keyword(s):

Standard Model ◽

Pair Production ◽

High Energy ◽

Recent Measurement ◽

Beyond The Standard Model ◽

Full Data ◽

Text Production ◽

Basic Framework ◽

The Standard Model ◽

Precision Electroweak Data

High energy electroweak data, including the recent measurement of M top is analyzed within the basic framework of the standard model. While the experimentally measured value of [Formula: see text] implies a low value of M top , the rest of the data demands a much higher value. Estimates of M Higgs within the SM framework including and excluding this Rb measurement are given. Next this discrepancy is expressed in terms of a new parameter, [Formula: see text], the excess[Formula: see text] production compared to that expected from a SM fit. This parameter is determined to be (9.4 to 12.8) ± 5.0 MeV, implying an excess of over 10 000 [Formula: see text] events in each LEP experiment after the 1993 data is fully analyzed. The origin of these events could be non-minimal Higgs pair production which should be thoroughly searched for in the full data sample of ~2×106 events per LEP experiment. Unless this discrepancy eventually turns out to be a fluctuation one may be witnessing at LEP the advent of physics beyond the standard model.

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RARE DECAYS AND CP VIOLATION BEYOND THE STANDARD MODEL

International Journal of Modern Physics A ◽

10.1142/s0217751x06032721 ◽

2006 ◽

Vol 21 (08n09) ◽

pp. 1738-1749 ◽

Cited By ~ 16

Author(s):

LUCA SILVESTRINI

Keyword(s):

Cp Violation ◽

Standard Model ◽

Rare Decays ◽

New Physics ◽

Beyond The Standard Model ◽

Unitarity Triangle ◽

Minimal Flavour Violation ◽

The Standard Model ◽

The Status ◽

Flavour Violation

We review the status of rare decays and CP violation in extensions of the Standard Model. We analyze the determination of the unitarity triangle and the model-independent constraints on new physics that can be derived from this analysis. We find stringent bounds on new contributions to [Formula: see text] and [Formula: see text] mixing, pointing either to models of minimal flavour violation or to models with new sources of flavour and CP violation in b → s transitions. We discuss the status of the universal unitarity triangle in minimal flavour violation, and study rare decays in this class of models. We then turn to supersymmetric models with nontrivial mixing between second and third generation squarks, discuss the present constraints on this mixing and analyze the possible effects on CP violation in b → s nonleptonic decays and on [Formula: see text] mixing. We conclude presenting an outlook on Lepton-Photon 2009.

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Status of Charm Flavor Physics

International Journal of Modern Physics A ◽

10.1142/s0217751x06034525 ◽

2006 ◽

Vol 21 (27) ◽

pp. 5381-5403 ◽

Cited By ~ 7

Author(s):

Ian Shipsey

Keyword(s):

Cp Violation ◽

Standard Model ◽

Flavor Physics ◽

Form Factors ◽

New Physics ◽

Model Description ◽

Beyond The Standard Model ◽

Physics Program ◽

The Standard Model ◽

The Status

The role of charm in testing the Standard Model description of quark mixing and CP violation through measurements of lifetimes, decay constants and semileptonic form factors is reviewed. Together with Lattice QCD, charm has the potential this decade to maximize the sensitivity of the entire flavor physics program to new physics and pave the way for understanding physics beyond the Standard Model at the LHC in the coming decade. The status of indirect searches for physics beyond the Standard Model through charm mixing, CP-violation and rare decays is also reported.

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