出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We propose a inference method to determine the luminosity spectrum precisely in a future high
luminosity electron positron linear collider. We introduce a statistical method recently developed
in the information technology. In the ordinal electron positron collides, colliding beam energy
is tuned with monocromatic energy, and luminosity can be measured by just counting the number
of Bhabha events. However, the high luminosity e+e− linear collider no more produces a
monochromatic energy spectrum, but a continuous and rather broad energy spectrum due to the
beamstrahlung. A precise knowledge of this energy spectrum alias the luminosity spectrum, the
precision experiment in the linear collider should be confronted with a crucial problem. The
proposed model is formulated as a mostly exact luminosity distribution function, and parameter
fitting is carried out for the data generated by simulation. This shows that the beam parameters
of colliding electrons and positrons can be determined with an uncertainty of several percents
by using 10k Bhabha events in an ideal detector condition, by which the luminosity spectrum is
described.
