56 research outputs found

    Analysis of the decayτ→ρΜ\tau \to \rho \nu

    No full text

    Une hyperandrogénie chez la femme ménopausée : origine ovarienne ou origine surrénalienne ?

    No full text
    International audiencePostmenopausal hyperandrogenism is an androgen excess originating from either the adrenals and/or the ovaries. Clinically, symptoms can be moderate (increase in terminal hair growth, acnea) or severe with signs of virilization (alopecia, clitoridomegaly). In either setting, physicians need to exclude relatively rare but potentially life-threatening underlying tumorous causes, such as adrenal androgen-secreting tumors. The objectives of this review are to evaluate which hormonal measurements (T, delta 4 androstenedione, 17 OH progesterone, SDHEA, FSH, LH) and/or imaging (pelvic ultrasound, MRI or adrenal CT-scan) could be useful identifying the origin of the androgen excess. Our review illustrates that the rate of progression of hirsutism and/or alopecia, and serum testosterone levels are in favor of tumors. Pelvic MRI and adrenal CT-scan are useful tools for identifying the different causes of androgen excess.L’hyperandrogĂ©nie est dĂ©finie par un excĂšs d’androgĂšnes. Chez les femmes, avant et aprĂšs la mĂ©nopause, les 2 sources d’androgĂšnes sont les ovaires et les surrĂ©nales. Cliniquement, les patientes ayant une hyperandrogĂ©nie, avant et aprĂšs la mĂ©nopause, peuvent prĂ©senter des signes cliniques modĂ©rĂ©s tels que l’hirsutisme/l’acnĂ© et/ou des signes de virilisation (alopĂ©cie, raucitĂ© de la voix, hypertrophie clitoridienne). Cette variation est en partie liĂ©e Ă  la sĂ©vĂ©ritĂ© de l’excĂšs. Une des difficultĂ©s principales de la prise en charge de l’hyperandrogĂ©nie aprĂšs la mĂ©nopause est de distinguer les Ă©tiologies ovariennes des Ă©tiologies surrĂ©naliennes. Il est important d’éliminer les causes tumorales qui sont rares, mais potentiellement menaçantes, telles que le corticosurrĂ©nalome malin. L’objectif de cette revue est d’évaluer la pertinence des diffĂ©rents dosages hormonaux (T, 17 OH progestĂ©rone, SDHEA, LH, FSH) et des imageries (Ă©chographies, scanner, IRM) pour identifier l’origine de la sĂ©crĂ©tion androgĂ©nique en s’appuyant sur un cas clinique d’hyperandrogĂ©nie sĂ©vĂšre chez une femme mĂ©nopausĂ©e. Dans la littĂ©rature, la rapiditĂ© d’évolution de l’hyperandrogĂ©nie et les valeurs seuils de testostĂ©rone sont les principaux marqueurs d’une origine tumorale. Le SDHEA n’est pas discriminant. Le cathĂ©tĂ©risme des veines ovariennes est peu informatif. L’imagerie, en particulier le scanner surrĂ©nalien ou l’IRM pelvienne, reprĂ©sente l’outil le plus appropriĂ© afin de faciliter la distinction entre les diffĂ©rents diagnostics et permettre l’identification de l’étiologie

    Measurement of the Z 0 line shape parameters and the electroweak couplings of charged leptons

    Get PDF
    Contains fulltext : 125119.pdf (preprint version ) (Open Access

    A test of higher-order electroweak theory in z0 decays to 2 leptons with an associated pair of charged-particles

    Get PDF
    Contains fulltext : 124397.pdf (publisher's version ) (Open Access

    Measurement of three-jet distributions sensitive to the gluon spin ine + e − annihilations at s√=91 GeV

    Get PDF
    Contains fulltext : 124457.pdf (publisher's version ) (Open Access

    A search for doubly charged higgs production in z0 decays

    Get PDF
    Contains fulltext : 124394.pdf (preprint version ) (Open Access

    Test of CP-invariance in e+e−→Z0→τ+τ−e{+}e^{-} \rightarrow Z^{0} \rightarrow \tau^{+}\tau^{-} and a limit on the weak dipole moment of the τ\tau lepton

    No full text

    A study of Bose-Einstein correlations in e+e−e^{+}e^{-} annihilations at LEP

    No full text

    A measurement of electron production in hadronic Z0 decays and a determination of GAMMA (Z0 --> b anti-b)

    Get PDF
    Contains fulltext : 124390.pdf (postprint version ) (Open Access

    First measurement of the left-right cross-section asymmetry in Z boson production by e+ e- collisions

    Get PDF
    We present the first measurement of the left-right cross section asymmetry (A(LR)) for Z boson production by e+e- collisions. The measurement was performed at a center-of-mass energy of 91.55 GeV with the SLD detector at the SLAC Linear Collider which utilized a longitudinally polarized electron beam. The average beam polarization was (22.4 +/- 0.6)%. Using a sample of 10224 Z decays, we measure A(LR) to be 0.100 +/- 0.044(stat) +/- 0.004(syst), which determines the effective weak mixing angle to be sin2theta(W)eff=0.2378 +/- 0.0056(stat) +/- 0.0005(syst)
    • 

    corecore