8,222 research outputs found
Real and Image Fields of a Relativistic Bunch
We derive analytical expressions for external fields of a charged
relativistic bunch with a circular cross section. At distances far from the
bunch, the field reduces to the relativistic modified Coulomb form and in the
near region, reproduce the external fields of a continuous beam. If the bunch
is surrounded by conducting surfaces, the bunch self-fields are modified. Image
fields generated by a bunch between two parallel conducting planes are studied
in detail. Exact summation of image fields by the direct method invented by
Laslett allows the infinite series to be represented in terms of elementary
trigonometric functions.Comment: 10 page
Kinematic selection criteria in a new resonance searches: Application to pentaquark states
In this note I recall some features of two-body decay kinematics which can be
effectively applied, in particular, in experimental searches for pentaquark
states.Comment: 11 pages, 5 figures, 1 tabl
Prompt photon, Drell-Yan and Bethe-Heitler processes in hard photoproduction
We present prospects and requirements for the study at HERA of hard photon
processes which generate high photons in the final state, and processes
which generate Drell-Yan lepton pairs.Comment: 6 pages, 3 embedded figures. To appear in the proceedings of the
workshop "Future physics at HERA
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