Current Status Of Luminosity Measurement With The Cmd-3 Detector

A. E. Ryzhenenkov,R. R. Akhmetshin,A. N. Amirkhanov,A. V. Anisenkov, V. M. Aulchenko, V. Sh. Banzarov,N. S. Bashtovoy, D. E. Berkaev,A. E. Bondar, A. V. Bragin,S. I. Eidelman,D. A. Epifanov, L. B. Epshteyn,A. L. Erofeev, G. V. Fedotovich, S. E. Gayazov, A. A. Grebenuk,S. S. Gribanov,D. N. Grigoriev, F. V. Ignatov,V. L. Ivanov,S. V. Karpov,V. F. Kazanin, A. S. Kasaev,I. A. Koop,A. A. Korobov, A. N. Kozyrev,E. A. Kozyrev,P. P. Krokovny, A. E. Kuzmenko,A. S. Kuzmin,I. B. Logashenko, A. P. Lysenko,P. A. Lukin,K. Yu. Mikhailov,V. S. Okhapkin,Yu. N. Pestov,E. A. Perevedentsev, A. S. Popov,G. P. Razuvaev,Yu. A. Rogovsky,A. A. Ruban,N. M. Ryskulov,Yu. M. Shatunov,V. E. Shebalin,D. N. Shemyakin, B. A. Shwartz,D. B. Shwartz, A. L. Sibidanov,E. P. Solodov,V. M. Titov,A. A. Talyshev, A. I. Vorobiov,Yu. V. Yudin

JOURNAL OF INSTRUMENTATION（2017）

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摘要

The. CMD-3 detector has begun to take data at the electron-positron collider VEPP-2000 since december 2010, The collected data sample corresponds to an integrated luminosity of 60 pb(-1) in the c,m, energy range from 0.32 up to 2 GeV and about 50pb(-1) for RUN2017. The integrated luminosity was measured by counting e(+) e(-) -> e(+) e(-) and e(+) e(-) -> gamma gamma events, allowing additional photons in the final state. Preliminary results of the luminosity measurement are presented for various energy ranges and its accuracy is estimated to be 1%.

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关键词

Data processing methods,Particle identification methods,Analysis and statistical methods,Performance of High Energy Physics Detectors

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