CMD-3 Overview

Ivan B. Logashenko; F.V. Ignatov; R.R. Akhmetshin; A.N. Amirkhanov; A.V. Anisenkov; V.M. Aulchenko; V.S. 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; V.L. Ivanov; S.V. Karpov; V.F. Kazanin; A.N. Kirpotin; A.A. Korobov; I.A. Koop; A.N. Kozyrev; E.A. Kozyrev; P.P. Krokovny; A.E. Kuzmenko; A.S. Kuzmin; P.A. Lukin; K.Yu. Mikhailov; V.S. Okhapkin; A.V. Otboev; Yu.N. Pestov; A.S. Popov; G.P. Razuvaev; A.A. Ruban; N.M. Ryskulov; A.E. Ryzhenenkov; A.I. Senchenko; V.E. Shebalin; D.N. Shemyakin; B.A. Shwartz; D.B. Shwartz; A.L. Sibidanov; P.Yu. Shatunov; Yu.M. Shatunov; E.P. Solodov; A.A. Talyshev; A.I. Vorobiov; Yu.V. Yudin; I.M. Zemlyansky

doi:10.1051/epjconf/201921802001

Proceedings

Open Access

EPJ Web of Conferences 218, 02001 (2019)
https://doi.org/10.1051/epjconf/201921802001

CMD-3 Overview

Ivan B. Logashenko¹^,2^*^,**, F.V. Ignatov¹, R.R. Akhmetshin¹, A.N. Amirkhanov¹^,2, A.V. Anisenkov¹^,2, V.M. Aulchenko¹^,2, V.S. Banzarov¹, N.S. Bashtovoy¹, D.E. Berkaev¹^,2, A.E. Bondar¹^,2, A.V. Bragin¹, S.I. Eidelman¹^,2, D.A. Epifanov¹^,2, L.B. Epshteyn¹^,2^,3, A.L. Erofeev¹^,2, G.V. Fedotovich¹^,2, S.E. Gayazov¹^,2, A.A. Grebenuk¹^,2, S.S. Gribanov¹^,2, D.N. Grigoriev¹^,2^,3, V.L. Ivanov¹^,2, S.V. Karpov¹, V.F. Kazanin¹^,2, A.N. Kirpotin¹, A.A. Korobov¹^,2, I.A. Koop¹, A.N. Kozyrev¹^,2, E.A. Kozyrev¹^,2, P.P. Krokovny¹^,2, A.E. Kuzmenko¹^,2, A.S. Kuzmin¹^,2, P.A. Lukin¹^,2, K.Yu. Mikhailov¹^,2, V.S. Okhapkin¹, A.V. Otboev¹, Yu.N. Pestov¹, A.S. Popov¹^,2, G.P. Razuvaev¹^,2, A.A. Ruban¹, N.M. Ryskulov¹, A.E. Ryzhenenkov¹^,2, A.I. Senchenko¹^,2, V.E. Shebalin¹^,2, D.N. Shemyakin¹^,2, B.A. Shwartz¹^,2, D.B. Shwartz¹^,2, A.L. Sibidanov⁴, P.Yu. Shatunov¹, Yu.M. Shatunov¹^,2, E.P. Solodov¹^,2, A.A. Talyshev¹^,2, A.I. Vorobiov¹, Yu.V. Yudin¹^,2 and I.M. Zemlyansky¹

¹ Budker Institute of Nuclear Physics, SB RAS, Novosibirsk, 630090, Russia
² Novosibirsk State University, Novosibirsk, 630090, Russia
³ Novosibirsk State Technical University, Novosibirsk, 630092, Russia
⁴ University of Victoria, Victoria, British Columbia, Canada V8W 3P6

^* e-mail: I.B.Logashenko@inp.nsk.su
^** This work is supported in part by the Russian Science Foundation (project 14-50-00580) and RFBR grants 16-02-00160-a, 17-02-00327-a, 17-02-00847-a, 17-02-00897-a.

Published online: 18 October 2019

Abstract

The CMD-3 detector is installed at the VEPP-2000 e⁺e⁻ collider at BINP (Novosibirsk, Russia). It is a general-purpose detector, equipped with a tracking system, two crystal (CSI and BGO) calorimeters, liquid Xe calorimeter, TOF and muon systems. The main goal of experiments at CMD-3 is a study of exclusive modes of e⁺e⁻→ hadrons at energies $\sqrt{s} \leq 2$ $\sqrt s \le$ GeV. In particular, these results provide an important input for calculation of the hadronic contribution to the muon anomalous magnetic moment.

The first round of data taking was performed in 2011–2013, when about 60 1/pb were taken in the center-of-mass (c.m.) energy range from 0.32 to 2.0 GeV. Here we present a survey of results of data analysis.

Between 2013 and 2016 the collider and the detector were upgraded. The data taking resumed by the end of 2016. In the first run after the upgrade about 50 1/pb were collected at the energy range between 1.28 and 2.007 GeV. We discuss the upgrade and the first preliminary results from the new data.

© The Authors, published by EDP Sciences, 2019

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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