Search for the K−pp bound state via γd→K+\pi−X reaction at Eγ=1.5–2.4 GeVстатья
Статья опубликована в высокорейтинговом журнале
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: 5 сентября 2016 г.
Аннотация:ISSN:0370-2693, eISSN:1873-2445;
A search for the K−pp bound state (the lightest kaonic nucleus) has been performed using the γd->K+\pi−X reaction at Eγ=1.5–2.4 GeV at LEPS/SPring-8. The differential cross section of the K+\pi− photo-production off deuterium (d2σ/dcosθK+lab/dcosθ\pi−lab) has been measured for the first time in this energy region. A peak structure was searched for in the inclusive missing mass spectrum. A statistically significant peak structure was not observed in the region from 2.22 to 2.36 GeV/c2. The upper limits of the differential cross section of the K−pp bound state production were determined to be (0.17–0.55), (0.55–1.7) and (1.1–2.9) μb at 95% confidence level with the assumed widths of 20 MeV, 60 MeV and 100 MeV.