Studies of light mesons at COMPASS

Studies of light mesons at COMPASS

To investigate the spectrum of light mesons, the COMPASS experiment has recorded data with a 190 GeV/c negative pion beam impinging on a liquid hydrogen target. Diffractive dissociation reactions at squared four-momentum transfers to the target between 0.1 and 1.0 (GeV/c)2 are studied. The flagship...

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Main Author: Uhl Sebastian
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201716407045
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spelling doaj-bc9e087afc724931b75ccb69fa609a012021-08-02T04:14:42ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011640704510.1051/epjconf/201716407045epjconf_icnfp2017_07045Studies of light mesons at COMPASSUhl SebastianTo investigate the spectrum of light mesons, the COMPASS experiment has recorded data with a 190 GeV/c negative pion beam impinging on a liquid hydrogen target. Diffractive dissociation reactions at squared four-momentum transfers to the target between 0.1 and 1.0 (GeV/c)2 are studied. The flagship channel is the π− π+ π− final state, for which COMPASS has recorded the at present world’s largest data sample. A new axial-vector signal, the a1(1420), has been found with unusual properties, pointing to an exotic nature. The findings are confirmed by the analysis of theπ− π0 π0 final state.https://doi.org/10.1051/epjconf/201716407045
collection DOAJ
language English
format Article
sources DOAJ
author Uhl Sebastian
spellingShingle Uhl Sebastian
Studies of light mesons at COMPASS
EPJ Web of Conferences
author_facet Uhl Sebastian
author_sort Uhl Sebastian
title Studies of light mesons at COMPASS
title_short Studies of light mesons at COMPASS
title_full Studies of light mesons at COMPASS
title_fullStr Studies of light mesons at COMPASS
title_full_unstemmed Studies of light mesons at COMPASS
title_sort studies of light mesons at compass
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2017-01-01
description To investigate the spectrum of light mesons, the COMPASS experiment has recorded data with a 190 GeV/c negative pion beam impinging on a liquid hydrogen target. Diffractive dissociation reactions at squared four-momentum transfers to the target between 0.1 and 1.0 (GeV/c)2 are studied. The flagship channel is the π− π+ π− final state, for which COMPASS has recorded the at present world’s largest data sample. A new axial-vector signal, the a1(1420), has been found with unusual properties, pointing to an exotic nature. The findings are confirmed by the analysis of theπ− π0 π0 final state.
url https://doi.org/10.1051/epjconf/201716407045
work_keys_str_mv AT uhlsebastian studiesoflightmesonsatcompass
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