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Study of charm production in the forward cone at energy e Lab ∼ 75 TeV with a two-storey X-ray emulsion chamber exposed at, mountain altitudesстатья
- Авторы: Borisov A.S., Chubenko A.P., Denisova V.G., Galkin V.I., Guseva Z.M., Kanevskaya E.A., Kogan M.G., Kulikov V.N., Morozov A.E., Mukhamedshin R.A., Puchkov V.S., Nazarov S.I., Pyatovsky S.E., Shoziyoev G.P., Smirnova and A V Vargasov M.D.
- Журнал: EPJ Web of Conferences
- Том: 99
- Номер: 10004
- Год издания: 2015
- DOI: 10.1051/epjconf/20159910004
- Аннотация: The origin of the cosmic ray hadron excess observed in a deep uniform lead X-ray emulsion chamber (XREC) at depths larger than 70 radiation lengths is analyzed. We present preliminary experimental data on the absorption of cosmic ray hadrons in the two-storey XREC with a large air gap exposed at the Tien Shan mountains. The design of the chamber was especially invented to prove the hypothesis on a substantial increase of the charm particle production cross section with energy at ELab ∼ 75 TeV as the main source of the darkness spot excess observed on X-ray films. Experimental data obtained with both a 2-storey XREC and a deep uniform XREC are compared with simulation results calculated with the FANSY 1.0 model. The comparison reveals a qualitative agreement between experimental and simulated data under the assumption of high values of charm particle production cross section at ELab ∼ 75 TeV in the forward kinematic region at xLab > 0.1.
- Добавил в систему: Шозиёев Гулмурод Парвонашоевич