Year: 2017
Type: conference-paper
Abstract: The X(2265) resonance was previously observed in DISTO data of p + p → p + Λ + K + at 2.85 GeV on an attempt of searching for the kaonic nuclear state K -pp → p + Λ.In the present paper we report an additional finding, namely, a double-resonance-type phenomena, not only with a peak at M(pΛ) = 2265 MeV/c 2 but also a broad bump at M(K + Λ) ∼ 1700 MeV/c 2 .This "double-resonance" zone is expressed as XY(2265, 1700).The latter bump may result from nearby nucleon resonances, typically N * (1710), as well as by attractive K + -Λ final-state interaction.We point out that this double resonance XY(2265, 1700) as seen in DISTO at 2.85 GeV cannot be populated kinematically in a HADES experiment at 3.5 GeV.
Authors: K. Suzuki, T. Yamazaki, M. Maggiora, P. Kienle
Institutions: Austrian Academy of Sciences, Stefan Meyer Institute for Subatomic Physics, RIKEN, RIKEN Nishina Center, The University of Tokyo, Istituto Nazionale di Fisica Nucleare, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Excellence Cluster Universe, Technical University of Munich
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W3103930005