B0−Bˉ0B^0 - \bar{B}^0 oscillations and measurements of ∣Vub∣/∣Vcb∣|V_{ub}|/|V_{cb}| at LEP

In this paper a review of the LEP analyses on $B^0 - \bar{B}^0$ oscillations and on the measurement of $|V_{ub}|/|V_{cb}|$ is presented . These measurements are of fundamental importance in constraining the $\rho$ and $\eta$ parameters of the CKM matrix. A review of the current status of the $V_{CKM}$ matrix determination is also given.Comment: Talk given at the "HQ98 Conference", Fermilab - Batavia (USA), October 10-12, 199

Determination of Unitarity Triangle parameters: where do we stand ?

In this note I review the current determination of the unitarity triangle parameters by using the theoretical and experimental information available in summer 2000.Comment: Invited talk given at the 7th International Conference on B-Physics at Hadron Machines- Beauty2000, Kibbutz Maagan, Israel, September 13-18, 200

Final Results on Heavy Quarks at LEP and SLD

In the last decade, the LEP and SLD experiments played a central role in the study of B hadrons (hadrons containing a b quark). New B hadrons have been observed ($B^0_s$, \Lambda_b$,$\Xi_b$and$B^{**}$) and their production and decay properties have been measured. In this paper we will focus on measurements of the CKM matrix elements:$|V_{cb}|$,$|V_{ub}|$,$|V_{td}|$and$|V_{ts}|$. We will show how all these measurements, together with theoretical developments, have significantly improved our knowledge on the flavour sector of the Standard Model.Comment: Talk given at the XXX SLAC Summer Institute, ssi2002, August 5-16,200

Review on B^0- \bar{\rm \bf{B^0}} mixing and b-lifetimes measurements at CDF/LEP/SLD

A review of the results on B^0- \bar {\rm B^0} mixing and b-lifetimes obtained by CDF, LEP and SLD collaborations is presented with special emphasis on B^0_s- \bar {{\rm B}^0_s} mixing.Comment: 3 page

Current Status of the CKM Matrix and the CP Violation

These lectures give an introduction and the current status of flavour physics in the quark sector, with special attention to the CKM matrix and CP violation. We describe the measurements which contribute to the determination of the CKM matrix elements and how, together with important theoretical developments, they have significantly improved our knowledge on the flavour sector of the Standard Model. These lectures are complemented by the seminar of U. Mallik (see these proceedings) which describes in more details the most recent CP-violating related measurements by the B-factories. The results presented are up-to-date till winter 2004.Comment: Lectures given at the Cargese School of Particle Physics and Cosmology - Cargese, August 4-16th, 200

Constraints on the parameters of the CKM matrix by End 1998

A review of the current status of the Cabibbo-Kobayashi-Maskawa matrix (CKM) is presented. This paper is an update of the results published in [1]. The experimental constraints imposed by the measurements of \epsilon_K, V_{ub}/V_{cb}, \Delta m_d and from the limit on \Delta m_d are used. Values of the constraints and of the parameters entering into the constraints, which restrict the range of the \bar{\rho} and \bar{\eta} parameters, include recent measurements presented at 1998 Summer Conferences and progress obtained by lattice QCD collaborations. The results are: \bar{\rho}=0.202 ^{+0.053}_{-0.059},\bar{\eta}=0.340 \pm 0.035, from which the angles \alpha, \beta and \gamma of the unitarity triangle are inferred : \sin 2 \alpha = -0.26 ^{+ 0.29}_{-0.28} ,\sin 2 \beta = 0.725 ^{+0.050}_{-0.060} ,\gamma= (59.5^{+8.5}_{-7.5})^{\circ}. Without using the constraint from \epsilon_K, \sin 2 \beta has been obtained: \sin 2 \beta = 0.72 ^{+0.07}_{-0.11}. Several external measurements or theoretical inputs have been removed, in turn, from the constraints and their respective probability density functions have been obtained. Central values and uncertainties on these quantities have been compared with actual measurements or theoretical evaluations. In this way it is possible to quantify the importance of the different measurements and the coherence of the Standard Model scenario for CP violation. An important result is that \Delta m_s is expected to be between [12.0-17.6] ps^{-1} with 68% C.L. and <20 ps^{-1} at 95% C.L. Finally relations between the CKM parameters and the quark masses are examined within a given model.Comment: 26 page

Feasibility study for a model independent measurement of 2β+γ\beta + \gamma in B0B^0 decays using D−K0π+D^- K^0 \pi^+ final states

In this paper we present a feasibility study for measuring the combination of the Unitarity Triangle angle 2$\beta +\gamma$ with a time dependent Dalitz analysis in $B^0$ decays using $D^- K^0 \pi^+$ final states following the method proposed in [1]. For this study we build a model for this decay using the latest experimental information and we investigate the possibility of fitting together with 2$\beta +\gamma$ all the relevant strong amplitudes and phases of the decay model. [1] R. Aleksan, T.C. Petersen and A. Soffer, Phys. Rev. D67 (2003) 096002 [hep-ph/0209194].Comment: 14 page

Rasagiline and PD Therapy

Summary Parkinson's disease (PD) is a therapy area with considerable unmet needs. The current key targets for PD treatment include the slowing of disease progression, improved control of motor fluctuations in advanced disease and the treatment of nonmotor symptoms. In view of such major requirements, it is important to consider how new drug treatments fit into the context of PD therapy, and the practical advantages that they may offer in the management of PD in clinical practice. Rasagiline is a novel, second-generation, irreversible, selective monoamine oxidase type B inhibitor that is indicated for the treatment of idiopathic PD, either as initial monotherapy or as adjunct therapy (with levodopa) for patients experiencing end-of-dose motor fluctuations. This review assesses the outcome from several large-scale clinical studies that have investigated the use of rasagiline in early and advanced PD patient populations and discusses the role of rasagiline within the current scope of PD therapy

Tra informatica e informazione: esempi di (ri)definizione dei meccanismi comunicativi nel giornalismo digitale

A partire dalle principali teorie della comunicazione del secolo scorso e, in particolare, dalle intuizioni di McLuhan circa la decisiva influenza del medium, si rileva come il web abbia mutato la natura del codice, del giornalista-emittente e del lettore-ricevente. L’esame di notizie diverse mostra significative differenze, ma anche chiare contaminazioni tra giornalismo online e giornalismo tradizionale. In particolare, se sul web la logica reticolare ha sostituito quella sequenziale, rideterminando gli stessi concetti di tempo e di spazio, rimangono tuttavia chiare le tradizionali divergenze tecnicostilistiche tra i diversi generi giornalistici