Publication: Two-pion production in the second resonance region in pi(-) p collisions with the High-Acceptance Di-Electron Spectrometer (HADES)
Дата
2020
Авторы
Adamczewski-Musch, J.
Arnold, O.
Atomssa, E. T.
Behnke, C.
Morozov, S.
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Аннотация
Pion-induced reactions provide unique opportunities for an unambiguous description of baryonic resonances and their coupling channels by means of a partial-wave analysis. Using the secondary pion beam at SIS18, the two-pion production in the second resonance region has been investigated to unravel the role of the N(1520)3(-)/2 resonance in the intermediate rho-meson production. Results on exclusive channels with one pion (pi(-) p) and two pions (pi(+) pi(-) n, pi(0) pi(-) p) in the final state measured in the pi(-)-p reaction at four different pion beam momenta (0.650, 0.685, 0.733, and 0.786 GeV/c) are presented. The excitation function of the different partial waves and Delta pi, N sigma, and N rho isobar configurations is obtained, using the Bonn-Gatchina partial-wave analysis. The N(1520)3(-)/(2) resonance is found to dominate the N rho final state with the branching ratio BR = 12.2% +/- 1.9%.
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Two-pion production in the second resonance region in pi(-) p collisions with the High-Acceptance Di-Electron Spectrometer (HADES) / Adamczewski-Musch, J [et al.] // Physical Review C. - 2020. - 102. - № 2. - 10.1103/PhysRevC.102.024001
URI
https://www.doi.org/10.1103/PhysRevC.102.024001
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https://openrepository.mephi.ru/handle/123456789/22259
https://www.scopus.com/record/display.uri?eid=2-s2.0-85092075078&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000557941400006
https://openrepository.mephi.ru/handle/123456789/22259