Neutron charge form factor at large q2q^2

The neutron charge form factor $G_{En}(q)$ is determined from an analysis of the deuteron quadrupole form factor $F_{C2}$ data. Recent calculations, based on a variety of different model interactions and currents, indicate that the contributions associated with the uncertain two-body operators of shorter range are relatively small for $F_{C2}$, even at large momentum transfer $q$. Hence, $G_{En}(q)$ can be extracted from $F_{C2}$ at large $q^2$ without undue systematic uncertainties from theory.Comment: 8 pages, 3 figure

Travelers With Cutaneous Leishmaniasis Cured Without Systemic Therapy

Guidelines recommend wound care and/or local therapy as first-line treatment for cutaneous leishmaniasis. An analysis of a referral treatment program in 135 travelers showed that this approach was feasible in 62% of patients, with positive outcome in 83% of evaluable patient

Étude de l'électrodésintégration et de la protodésintégration de l'oxygène 16

Excitation curves for the production of 15O, 13N and 11C by photodisintegration and electrodisintegration of 16O have been measured from 60 to 150 MeV. By comparison of these two modes of production the multipolarity of the transitions is studied. The first two isotopes are produced mainly at energies at about the giant resonance, the third at energies above 50 MeV. The integrated cross section of 16O(γn) 15O is [FORMULE].Nous avons mesuré la production en fonction de l'énergie de trois corps radioactifs par photodésintégration et par électrodésintégration à partir de l'Oxygène 16. Les trois réactions étudiées sont 16O(γ, n) 15O, 16O(γ, t) 13N, 16O(γ, 2p 3n) 11C pour une gamme d'énergie allant de 60 MeV à 150 MeV. Ces réactions sont très différentes. Les deux premières se produisent à basse énergie et font appel à des processus multipolaires que l'on a distingué par la comparaison de la photoproduction et de l'électroproduction. La troisième se produit essentiellement à des énergies supérieures à 50 MeV. La section efficace intégrée de la réaction 16O(γ, n) 15O est [FORMULE]

Electromagnetic processes at low momentum transfer : a review for users

Electromagnetic processes at low momentum transfer are often sources of background in many experiments. To be removed these effects must be calculated by the experimentalist, who must have a good knowledge of the validity of the theoretical formulas that he must use. Then we thought that it will be useful to prepare this review whose presentation is such that it should allow everyone to appreciate the accuracy of formulas that he must use in very complex situations. In this paper, we examine the problem related to bremsstrahlung, pair production and radiative corrections. The first part is devoted to kinematic and to the methods used to establish the corresponding cross sections