Inclusive Lambda production in proton-proton collisions at 3.5 GeV

0475675 - ÚJF 2018 RIV US eng J - Článek v odborném periodiku
Adamczewski-Musch, J. - Agakishiev, G. - Arnold, O. - Atomssa, E. T. - Krása, Antonín - Kugler, Andrej - Sobolev, Yuri, G. - Svoboda, Ondřej - Tlustý, Pavel - Wagner, Vladimír … celkem 109 autorů
Inclusive Lambda production in proton-proton collisions at 3.5 GeV.
Physical Review C. Roč. 95, č. 1 (2017), č. článku 015207. ISSN 2469-9985. E-ISSN 2469-9993
Grant CEP: GA ČR GA13-06759S
Institucionální podpora: RVO:61389005
Klíčová slova: heavy ion collisions * resonance model * pp collisions
Obor OECD: Nuclear physics
Impakt faktor: 3.304, rok: 2017

The inclusive production of Lambda hyperons in proton-proton collisions at root s = 3.18 GeV was measured with HADES at the GSI Helmholtzzentrum fur Schwerionenforschung in Darmstadt. The experimental data are compared to a data- based model for individual exclusive Lambda production channels in the same reaction. The contributions of intermediate resonances such as Sigma(1385), Delta(++), or N-* are considered in detail. In particular, the result of a partial- wave analysis accounts for the abundant pK(+) Lambda final state. Model and data show a reasonable agreement at midrapidities, while a difference is found for larger rapidities. A total Lambda production cross section in p + p collisions at root s = 3.18 GeV of sigma (p + p -> Lambda + X) = 207.3 +/- 1.3 (+6.0) (-7.3)(stat.) +/- 8.4(syst.) (+ 0.4) (- 0.5)(model.) mu b is found.
Trvalý link: http://hdl.handle.net/11104/0272329