Abstract
The most interesting cosmological open problems, baryon asymmetry, dark matter, inflation and dark energy, are not explained by the standard model of particle physics (SM). The final<br />goal of the Large Hadron Collider an experimental verification of the SM in the Higgs sector, and also a search for evidence of new physics beyond it. In this paper we will report some of the results obtained in 2010 and 2011, from the LHCb experiment dedicated to the study of CP violations and rare decays of heavy quarks.
Highlights
The Standard Model (SM) of particle physics is at present the most advanced and comprehensive phenomenological theory of all the elementary particles and forces known, with the exclusion of gravity [1]
The progress of observative cosmology made in last decades, specially from space, has radically reshaped our vision of the Universe, in a way that seems to contradict the completeness of the SM
Inflation: The prototype for the “inflaton” [15] for Alan Guth was originally the Higgs field. It was realized very soon [16] that in order to have the required shape the self-coupling of the Higgs should be of the order of λ 10−13, too small to be compatible with EW physics
Summary
The Standard Model (SM) of particle physics is at present the most advanced and comprehensive phenomenological theory of all the elementary particles and forces known, with the exclusion of gravity [1]. Inflation: The prototype for the “inflaton” [15] for Alan Guth was originally the Higgs field It was realized very soon [16] that in order to have the required shape the self-coupling of the Higgs should be of the order of λ 10−13, too small to be compatible with EW physics. The SM Higgs itself could provide the inflationary potential if its coupling to gravity is non-minimal [17] In this case the observation of the Cosmic Microwave Background (CMB) fluctuations set limits to the Higgs mass in the range 120 ÷ 140 GeV/c2, compatible with the present limits of the TEVATRON and LHC experiments Since SUSY is broken at present, the discrepancy is not eliminated but only mitigated by SUSY to the level of about 60 order of magnitudes This situation indicates a serious unsolved problem for particle physics theory [23]. The LHC experiments will be certainly able to set constraints to the various possible alternative theories that have been proposed
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