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Light meson decays at BESIII

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Zeitschriftentitel: EPJ Web of Conferences
Personen und Körperschaften: Yan, Wencheng
In: EPJ Web of Conferences, 199, 2019, S. 01023
Format: E-Article
Sprache: Unbestimmt
veröffentlicht:
EDP Sciences
Schlagwörter:
General Earth and Planetary Sciences
General Engineering
General Environmental Science
author_facet Yan, Wencheng
Yan, Wencheng
author Yan, Wencheng
spellingShingle Yan, Wencheng
EPJ Web of Conferences
Light meson decays at BESIII
General Earth and Planetary Sciences
General Engineering
General Environmental Science
author_sort yan, wencheng
spelling Yan, Wencheng 2100-014X EDP Sciences General Earth and Planetary Sciences General Engineering General Environmental Science http://dx.doi.org/10.1051/epjconf/201919901023 <jats:p>The BESIII experiment has accumulated the world’s largest data samples of 1.3 billion <jats:italic>J/ψ</jats:italic> events and 0.45 billion <jats:italic>ψ</jats:italic>(3686) events, which provide a unique opportunity to investigate light meson decays. The <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays are sensitive tools for investigations of <jats:italic>π</jats:italic> − <jats:italic>π</jats:italic> and <jats:italic>η</jats:italic> − <jats:italic>π</jats:italic> interactions, symmetry breaking, and serve as a test of chiral perturbation theory. In recent years considerable results on <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays were achieved at the BESIII experiment. In this proceeding, we present the significant progresses on amplitude analyses of Dalitz decays <jats:italic>η'</jats:italic> → 3<jats:italic>π</jats:italic>,<jats:italic>η'</jats:italic> → <jats:italic>ηππ</jats:italic>, and radiative decay <jats:italic>η'</jats:italic> → <jats:italic>γπ</jats:italic><jats:sup>+</jats:sup><jats:italic>π</jats:italic><jats:sup>−</jats:sup>, <jats:italic>η'</jats:italic> → <jats:italic>γγπ</jats:italic><jats:sup>0</jats:sup>. Additionally, the $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is an important probe to the nature of those two lightest scalar mesons. The first observation of $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is also presented, which will help to improve the understanding of the nature of $a_0^0\left( {980} \right)$ and <jats:italic>f</jats:italic><jats:sub>0</jats:sub>(980).</jats:p> Light meson decays at BESIII EPJ Web of Conferences
doi_str_mv 10.1051/epjconf/201919901023
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title Light meson decays at BESIII
title_unstemmed Light meson decays at BESIII
title_full Light meson decays at BESIII
title_fullStr Light meson decays at BESIII
title_full_unstemmed Light meson decays at BESIII
title_short Light meson decays at BESIII
title_sort light meson decays at besiii
topic General Earth and Planetary Sciences
General Engineering
General Environmental Science
url http://dx.doi.org/10.1051/epjconf/201919901023
publishDate 2019
physical 01023
description <jats:p>The BESIII experiment has accumulated the world’s largest data samples of 1.3 billion <jats:italic>J/ψ</jats:italic> events and 0.45 billion <jats:italic>ψ</jats:italic>(3686) events, which provide a unique opportunity to investigate light meson decays. The <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays are sensitive tools for investigations of <jats:italic>π</jats:italic> − <jats:italic>π</jats:italic> and <jats:italic>η</jats:italic> − <jats:italic>π</jats:italic> interactions, symmetry breaking, and serve as a test of chiral perturbation theory. In recent years considerable results on <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays were achieved at the BESIII experiment. In this proceeding, we present the significant progresses on amplitude analyses of Dalitz decays <jats:italic>η'</jats:italic> → 3<jats:italic>π</jats:italic>,<jats:italic>η'</jats:italic> → <jats:italic>ηππ</jats:italic>, and radiative decay <jats:italic>η'</jats:italic> → <jats:italic>γπ</jats:italic><jats:sup>+</jats:sup><jats:italic>π</jats:italic><jats:sup>−</jats:sup>, <jats:italic>η'</jats:italic> → <jats:italic>γγπ</jats:italic><jats:sup>0</jats:sup>. Additionally, the $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is an important probe to the nature of those two lightest scalar mesons. The first observation of $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is also presented, which will help to improve the understanding of the nature of $a_0^0\left( {980} \right)$ and <jats:italic>f</jats:italic><jats:sub>0</jats:sub>(980).</jats:p>
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description <jats:p>The BESIII experiment has accumulated the world’s largest data samples of 1.3 billion <jats:italic>J/ψ</jats:italic> events and 0.45 billion <jats:italic>ψ</jats:italic>(3686) events, which provide a unique opportunity to investigate light meson decays. The <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays are sensitive tools for investigations of <jats:italic>π</jats:italic> − <jats:italic>π</jats:italic> and <jats:italic>η</jats:italic> − <jats:italic>π</jats:italic> interactions, symmetry breaking, and serve as a test of chiral perturbation theory. In recent years considerable results on <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays were achieved at the BESIII experiment. In this proceeding, we present the significant progresses on amplitude analyses of Dalitz decays <jats:italic>η'</jats:italic> → 3<jats:italic>π</jats:italic>,<jats:italic>η'</jats:italic> → <jats:italic>ηππ</jats:italic>, and radiative decay <jats:italic>η'</jats:italic> → <jats:italic>γπ</jats:italic><jats:sup>+</jats:sup><jats:italic>π</jats:italic><jats:sup>−</jats:sup>, <jats:italic>η'</jats:italic> → <jats:italic>γγπ</jats:italic><jats:sup>0</jats:sup>. Additionally, the $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is an important probe to the nature of those two lightest scalar mesons. The first observation of $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is also presented, which will help to improve the understanding of the nature of $a_0^0\left( {980} \right)$ and <jats:italic>f</jats:italic><jats:sub>0</jats:sub>(980).</jats:p>
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spelling Yan, Wencheng 2100-014X EDP Sciences General Earth and Planetary Sciences General Engineering General Environmental Science http://dx.doi.org/10.1051/epjconf/201919901023 <jats:p>The BESIII experiment has accumulated the world’s largest data samples of 1.3 billion <jats:italic>J/ψ</jats:italic> events and 0.45 billion <jats:italic>ψ</jats:italic>(3686) events, which provide a unique opportunity to investigate light meson decays. The <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays are sensitive tools for investigations of <jats:italic>π</jats:italic> − <jats:italic>π</jats:italic> and <jats:italic>η</jats:italic> − <jats:italic>π</jats:italic> interactions, symmetry breaking, and serve as a test of chiral perturbation theory. In recent years considerable results on <jats:italic>η</jats:italic> and <jats:italic>η′</jats:italic> decays were achieved at the BESIII experiment. In this proceeding, we present the significant progresses on amplitude analyses of Dalitz decays <jats:italic>η'</jats:italic> → 3<jats:italic>π</jats:italic>,<jats:italic>η'</jats:italic> → <jats:italic>ηππ</jats:italic>, and radiative decay <jats:italic>η'</jats:italic> → <jats:italic>γπ</jats:italic><jats:sup>+</jats:sup><jats:italic>π</jats:italic><jats:sup>−</jats:sup>, <jats:italic>η'</jats:italic> → <jats:italic>γγπ</jats:italic><jats:sup>0</jats:sup>. Additionally, the $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is an important probe to the nature of those two lightest scalar mesons. The first observation of $a_0^0\left( {980} \right) - {f_0}\left( {980} \right)$ mixing is also presented, which will help to improve the understanding of the nature of $a_0^0\left( {980} \right)$ and <jats:italic>f</jats:italic><jats:sub>0</jats:sub>(980).</jats:p> Light meson decays at BESIII EPJ Web of Conferences
spellingShingle Yan, Wencheng, EPJ Web of Conferences, Light meson decays at BESIII, General Earth and Planetary Sciences, General Engineering, General Environmental Science
title Light meson decays at BESIII
title_full Light meson decays at BESIII
title_fullStr Light meson decays at BESIII
title_full_unstemmed Light meson decays at BESIII
title_short Light meson decays at BESIII
title_sort light meson decays at besiii
title_unstemmed Light meson decays at BESIII
topic General Earth and Planetary Sciences, General Engineering, General Environmental Science
url http://dx.doi.org/10.1051/epjconf/201919901023