Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Search for the η mesic He 3 in the pd→dpπ0 reaction with the WASA-at-COSY facility. / WASA-at-COSY Collaboration.
в: Physical Review C, Том 102, № 4, 044322, 20.10.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Search for the η mesic He 3 in the pd→dpπ0 reaction with the WASA-at-COSY facility
AU - The WASA-at-COSY Collaboration
AU - Adlarson, P.
AU - Augustyniak, W.
AU - Bashkanov, M.
AU - Bass, S. D.
AU - Bergmann, F. S.
AU - Berłowski, M.
AU - Bondar, A.
AU - Büscher, M.
AU - Calén, H.
AU - Ciepał, I.
AU - Clement, H.
AU - Czerwiński, E.
AU - Demmich, K.
AU - Engels, R.
AU - Erven, A.
AU - Erven, W.
AU - Eyrich, W.
AU - Fedorets, P.
AU - Föhl, K.
AU - Fransson, K.
AU - Goldenbaum, F.
AU - Goswami, A.
AU - Grigoryev, K.
AU - Heijkenskjöld, L.
AU - Hejny, V.
AU - Hüsken, N.
AU - Hirenzaki, S.
AU - Johansson, T.
AU - Kamys, B.
AU - Kelkar, N. G.
AU - Kemmerling, G.
AU - Khoukaz, A.
AU - Khreptak, A.
AU - Kirillov, D. A.
AU - Kistryn, S.
AU - Kleines, H.
AU - Kłos, B.
AU - Krzemień, W.
AU - Kulessa, P.
AU - Kupść, A.
AU - Lalwani, K.
AU - Lersch, D.
AU - Lorentz, B.
AU - Magiera, A.
AU - Maier, R.
AU - Marciniewski, P.
AU - Mariański, B.
AU - Morsch, H. P.
AU - Moskal, P.
AU - Shwartz, B.
N1 - We acknowledge the support from the Polish National Science Center through Grant No. 2016/23/B/ST2/00784. Theoretical parts of this work was partly supported by the Faculty of Science, Universidad de los Andes, Colombia, through Project No. P18.160322.001-17, and by JSPS KAKENHI Grant No. JP16K05355 (S.H.) in Japan.
PY - 2020/10/20
Y1 - 2020/10/20
N2 - The excitation function for the pd→dpπ0 reaction has been measured by WASA-at-COSY experiment with the aim of searching for He3-η mesic nuclei. The measurement in the vicinity of η meson production was performed using a ramped proton beam. The data analysis and interpretation was carried out with the assumption that the η mesic helium decays via the formation of an intermediate N∗(1535) resonance. No direct signal of the η mesic nucleus is observed in the excitation function. We determine a new improved upper limit for the total cross section for the bound state production and decay in the pd→(He-3η)bound→dpπ0 process. It varies between 13 nb to 24 nb for the bound state with width in the range Γ(5,50) MeV.
AB - The excitation function for the pd→dpπ0 reaction has been measured by WASA-at-COSY experiment with the aim of searching for He3-η mesic nuclei. The measurement in the vicinity of η meson production was performed using a ramped proton beam. The data analysis and interpretation was carried out with the assumption that the η mesic helium decays via the formation of an intermediate N∗(1535) resonance. No direct signal of the η mesic nucleus is observed in the excitation function. We determine a new improved upper limit for the total cross section for the bound state production and decay in the pd→(He-3η)bound→dpπ0 process. It varies between 13 nb to 24 nb for the bound state with width in the range Γ(5,50) MeV.
KW - BOUND-STATES
KW - NUCLEI
KW - MESON
KW - HELIUM
UR - http://www.scopus.com/inward/record.url?scp=85094958474&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.102.044322
DO - 10.1103/PhysRevC.102.044322
M3 - Article
AN - SCOPUS:85094958474
VL - 102
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 4
M1 - 044322
ER -
ID: 25847355