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On the Dominant Role of Charm Production in the Forward Kinematic Region According to Cosmic-Ray Experimentsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 22 апреля 2020 г.
- Авторы: Borisov A.S., Denisova V.G., Galkin V.I., Guseva Z.M., Kanevskaya E.A., Kogan M.G., Mukhamedshin R.A., Nazarov S.I., Puchkov V.S., Sadykov T.
- Журнал: Physics of Atomic Nuclei
- Том: 82
- Год издания: 2019
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 827
- Последняя страница: 833
- Аннотация: A phenomenon of abnormally weak absorption of very-high-energy cosmic-ray hadrons in lead is discussed. This phenomenon was first observed in Tien-Shan high-altitude experiments in hadronic cores of extensive air showers and has encouraged to introduce the hypothesis of a so-called long-flying or penetrating cosmic-ray component. A similar effect was detected later with deep uniform lead X-ray emulsion chambers (XREC) at the Pamirs. Experiments, which are sensitive to the production of charmed hadrons in the forward kinematic region (xLab ≳ 0.1), have been carried out at the Tien-Shan and Pamirs with exposing two-storey XRECs with large air gaps to prove explanation of the experimental results with high charm production cross section 𝜎𝑝𝑝→𝑐𝑐¯∼8 at xLab ≳ 0.1 at ⟨ELab⟩ ∼ 75 TeV. This 𝜎𝑝𝑝→𝑐𝑐¯ value makes it possible to reproduce the experimental hadron-absorption curve observed with XRECs, including curve’s bending at a depth of ∼70 c.u.
- Добавил в систему: Галкин Владимир Игоревич