Study of single-spin asymmetries with polarized target at the SPASCHARM experiment at U70 accelerator

International Conference on Particle Physics and Astrophysics

物理学;天文学

Abramov, V.V.^1 ; Bazhanov, N.A.^2 ; Belikov, N.I.^1 ; Borisov, A.A.^1 ; Borisov, N.S.^2 ; Bukreeva, S.I.^1 ; Garkusha, V.I.^1 ; Goncharenko, Y.M.^1 ; Davidenko, A.M.^1 ; Derevschikov, A.A.^1 ; Fahrutdinov, R.M.^1 ; Klepikov, A.Y.^1,3 ; Kozhin, A.S.^1 ; Lazarev, A.B.^2 ; Melnik, Y.M.^1 ; Meschanin, A.P.^1 ; Minaev, N.G.^1 ; Moiseev, V.V.^1,3 ; Mochalov, V.V.^1,3 ; Morozov, D.A.^1 ; Neganov, A.B.^2 ; Nogach, L.V.^1 ; Nurushev, S.B.^1,3 ; Petrov, V.S.^1 ; Prudkoglyad, A.F.^1 ; Ryazantsev, A.V.^1 ; Rykov, V.L.^3 ; Ryzhikov, S.V.^1 ; Semenov, P.A.^1,3 ; Senko, V.A.^1 ; Shalanda, N.A.^1 ; Shchevelev, O.N.^2 ; Soldatov, M.M.^1 ; Soloviev, L.F.^1 ; Strikhanov, M.N.^3 ; Vasiliev, A.N.^1,3 ; Usov, Y.A.^2 ; Yakimchuk, V.I.^1 ; Yakutin, A.E.^1 ; Zapolsky, V.N.^1

Institute for High Energy Physics, National Research Centre Kurchatov Institute, Protvino Moscow region

142280, Russia^1

International Intergovernmental Organization Joint Institute for Nuclear Research, Joliot-Curie str. 6, Moscow region, Dubna

141980, Russia^2

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^3

关键词: Experimental set up;    Hyperon polarization;    Kinematic variables;    Polarization measurements;    Polarization phenomena;    Single-spin asymmetries;    Spin density matrix;    Strong interaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012096/pdf
DOI  :  10.1088/1742-6596/798/1/012096

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

The new SPASCHARM experiment for systematic studies of polarization phenomena in strong interactions is under construction now at IHEP, Protvino. The technical beam runs for the experiment first stage are planned for the Fall 2016 and Spring 2017. At this stage, the polarization measurements will be carried out with unpolarized hadronic beams of various compositions (π±, K±, p, antiprotons), using the polarized target. The universal large acceptance experimental set-up is capable detecting and identification most charged and neutral particles and reconstructing a large number of resonances produced in beam interactions at polarized proton target, and later on at the second stage, in collisions of polarized proton and antiproton beams with fixed targets of various materials. The large acceptance and wide data acquisition bandwidth would provide the capabilities for simultaneous data accumulation for a number of physics analyses from the measurements of single-spin asymmetries in inclusive and exclusive reactions to reconstructions of final state hyperon polarizations and spin density matrix elements for vector mesons in a wide range of kinematic variables (pT, xF).