Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS

The COMPASS experiment at CERN collected a large sample of diffractively produced $π ^−π^ −π^ +$ events. The data contain contributions from light-meson resonances with the quantum numbers of πJ - and aJ -like states. We performed a partial-wave analysis of this final state for proton and nuclear ta...

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Detalles Bibliográficos
Autores principales: Kaspar, Florian Markus, Gerassimov, Sergei
Lenguaje:eng
Publicado: 2022
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.31349/SuplRevMexFis.3.0308020
http://cds.cern.ch/record/2824975
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author Kaspar, Florian Markus
Gerassimov, Sergei
author_facet Kaspar, Florian Markus
Gerassimov, Sergei
author_sort Kaspar, Florian Markus
collection CERN
description The COMPASS experiment at CERN collected a large sample of diffractively produced $π ^−π^ −π^ +$ events. The data contain contributions from light-meson resonances with the quantum numbers of πJ - and aJ -like states. We performed a partial-wave analysis of this final state for proton and nuclear targets. We consistently observe a π-like signal with $J^{PC} = 0^{−+}$ in the $f_2(1270)πD$ wave. The signal appears to be incompatible with the established π(1800) resonance, which we observe in the decays into $(ππ)SπS, f_0(980)πS$ and $f_0(1500)πS$ waves.
id cern-2824975
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
record_format invenio
spelling cern-28249752022-08-24T14:06:08Zdoi:10.31349/SuplRevMexFis.3.0308020http://cds.cern.ch/record/2824975engKaspar, Florian MarkusGerassimov, SergeiAnalysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASSParticle Physics - ExperimentThe COMPASS experiment at CERN collected a large sample of diffractively produced $π ^−π^ −π^ +$ events. The data contain contributions from light-meson resonances with the quantum numbers of πJ - and aJ -like states. We performed a partial-wave analysis of this final state for proton and nuclear targets. We consistently observe a π-like signal with $J^{PC} = 0^{−+}$ in the $f_2(1270)πD$ wave. The signal appears to be incompatible with the established π(1800) resonance, which we observe in the decays into $(ππ)SπS, f_0(980)πS$ and $f_0(1500)πS$ waves.oai:cds.cern.ch:28249752022
spellingShingle Particle Physics - Experiment
Kaspar, Florian Markus
Gerassimov, Sergei
Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS
title Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS
title_full Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS
title_fullStr Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS
title_full_unstemmed Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS
title_short Analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at COMPASS
title_sort analysis of the diffractively produced $\pi^- \pi^- \pi^+$ final state at compass
topic Particle Physics - Experiment
url https://dx.doi.org/10.31349/SuplRevMexFis.3.0308020
http://cds.cern.ch/record/2824975
work_keys_str_mv AT kasparflorianmarkus analysisofthediffractivelyproducedpipipifinalstateatcompass
AT gerassimovsergei analysisofthediffractivelyproducedpipipifinalstateatcompass

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