0000000000808147
AUTHOR
A. Bottino
Implications for relic neutralinos of the theoretical uncertainties in the neutralino-nucleon cross section
We discuss the effect induced on the neutralino-nucleon cross-section by the present uncertainties in the values of the quark masses and of the quark scalar densities in the nucleon. We examine the implications of this aspect on the determination of the neutralino cosmological properties, as derived from measurements of WIMP direct detection. We show that, within current theoretical uncertainties, the DAMA annual modulation data are compatible with a neutralino as a major dark matter component, to an extent which is even larger than the one previously derived. We also comment on implications of the mentioned uncertainties for experiments of indirect dark matter detection.
Extending the DAMA annual-modulation region by inclusion of the uncertainties in astrophysical velocities
The original annual-modulation region, singled out by the DAMA/NaI experiment for direct detection of WIMPs, is extended by taking into account the uncertainties in the galactic astrophysical velocities. Also the effect due to a possible bulk rotation for the dark matter halo is considered. We find that the range for the WIMP mass becomes 30 GeV < m_chi < 130 GeV at 1-sigma C.L. with a further extension in the upper bound, when a possible bulk rotation of the dark matter halo is taken into account. We show that the DAMA results, when interpreted in the framework of the Minimal Supersymmetric extension of the Standard Model, are consistent with a relic neutralino as a dominant componen…
LES TUMEURS PHYLLODES DU SEIN
The authors report on their experience with six patients suffering from carcinoma phylloides of the breast and discuss the clinical and diagnostic characteristics of this rare neoplasm and its treatment. Clinical examination is the most important procedure in the diagnosis of this tumour of the breast. In most cases, ultrasonography, mammography and cytology are not helpful in establishing the correct diagnosis. Indeed is very difficult to identify valid criteria of differential diagnosis between this tumour and other breast neoplasms especially fibroadenoma. Limited surgery, consisting in a wide excision of the tumour, is the treatment of choice although a higher incidence of local recurre…