707 research outputs found
Spin precession in a quadrupole lens
No full textIn transporting a polarized proton beam through a channel consisting of dipole magnets and quadrupoles, one needs to calculate the depolarization effects due to the magnetic fields. Usually the dipole magnet has a homogeneous field and the spin precession is calculated straightforwardly. But an equation of motion of spin in a quadrupole lens has not yet been solved analytically. The author proposes here such a solution and the result obtained is applied to some interesting practical cases. (5 refs)
CERN-Russian meeting
No full text(front) V.P Dzhelepov (Dubna) (2nd row) A. Serov (State Committee), I.G. Morozov (Vice-Minister for Atomic Energy), V.S. Kaftanov (ITEP) (back) A. Derevschikov, R. Anthoine, V. Savrin, S. Nurushev, E. Gabathuler, M. Steuer (see CERN Courier of August 1974
Study of the Total and Differential Cross Sections, and Polarization Effects in pp Elastic Scattering at RHIC
No full textStudy of the total and differential cross sections, and polarization effects in PP elastic scattering at RHIC
No full text
The Explicit Procedures for Reconstruction of Full Set of Helicity Amplitudes in Elastic Proton-Proton and Proton-Antiproton Collisions
No full textDe l'utilisation possible d'une cible polarisée pour la recherche du boson W dans les collisions NN
No full textFirst Observation of a narrow Charm-Strange Meson D+(SJ)(2632)-->D+(S) eta and D0 K+
No full textWe report the first observation of a charm-strange meson D-sJ(+)(2632) at a mass of 2632.5+/-1.7 MeV/c(2) in data from SELEX, the charm hadro-production experiment E781 at Fermilab. This state is seen in two decay modes, D(s)(+)eta and (DK+)-K-0. In the D(s)(+)eta decay mode we observe a peak with 101 events over a combinatoric background of 54.9 events at a mass of 2635.4+/-3.3 MeV/c(2). There is a corresponding peak of 21 events over a background of 6.9 at 2631.5+/-2.0 MeV/c(2) in the decay mode (DK+)-K-0. The decay width of this state is <17 MeV/c(2) at 90% confidence level. The relative branching ratio Gamma((DK+)-K-0)/Gamma(D(s)(+)eta) is 0.14+/-0.06. The mechanism that keeps this state narrow is unclear. Its decay pattern is also unusual, being dominated by the D(s)(+)eta decay mode
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