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vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Histoire"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Histoire</span> </div> </a> <ul id="toc-Histoire-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Applications" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Applications"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Applications</span> </div> </a> <ul id="toc-Applications-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes_et_références" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Notes_et_références"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Notes et références</span> </div> </a> <ul id="toc-Notes_et_références-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voir_aussi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voir_aussi"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Voir aussi</span> </div> </a> <button aria-controls="toc-Voir_aussi-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Afficher / masquer la sous-section Voir aussi</span> </button> <ul id="toc-Voir_aussi-sublist" class="vector-toc-list"> <li id="toc-Articles_connexes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Articles_connexes"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Articles connexes</span> </div> </a> <ul id="toc-Articles_connexes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Liens_externes" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Liens_externes"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.2</span> <span>Liens externes</span> </div> </a> <ul id="toc-Liens_externes-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Sommaire" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Basculer la table des matières" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Basculer la table des matières</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Méson J/ψ</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Aller à un article dans une autre langue. Disponible en 29 langues." > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-29" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">29 langues</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Mes%C3%B3_psi%C3%B3" title="Mesó psió – catalan" lang="ca" hreflang="ca" data-title="Mesó psió" data-language-autonym="Català" data-language-local-name="catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C4%8C%C3%A1stice_J/%CF%88" title="Částice J/ψ – tchèque" lang="cs" hreflang="cs" data-title="Částice J/ψ" data-language-autonym="Čeština" data-language-local-name="tchèque" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/J/%CF%88-Meson" title="J/ψ-Meson – allemand" lang="de" hreflang="de" data-title="J/ψ-Meson" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/J/psi_meson" title="J/psi meson – anglais" lang="en" hreflang="en" data-title="J/psi meson" data-language-autonym="English" data-language-local-name="anglais" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Mezono_J/%CE%A8" title="Mezono J/Ψ – espéranto" lang="eo" hreflang="eo" data-title="Mezono J/Ψ" data-language-autonym="Esperanto" data-language-local-name="espéranto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Mes%C3%B3n_J/%CF%88" title="Mesón J/ψ – espagnol" lang="es" hreflang="es" data-title="Mesón J/ψ" data-language-autonym="Español" data-language-local-name="espagnol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/J/%CF%88_partikula" title="J/ψ partikula – basque" lang="eu" hreflang="eu" data-title="J/ψ partikula" data-language-autonym="Euskara" data-language-local-name="basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B0%D8%B1%D9%87_%D8%B3%D8%A7%DB%8C" title="ذره سای – persan" lang="fa" hreflang="fa" data-title="ذره سای" data-language-autonym="فارسی" data-language-local-name="persan" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%9E%D7%96%D7%95%D7%9F_J/psi" title="מזון J/psi – hébreu" lang="he" hreflang="he" data-title="מזון J/psi" data-language-autonym="עברית" data-language-local-name="hébreu" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/J/%CF%88_mezon" title="J/ψ mezon – croate" lang="hr" hreflang="hr" data-title="J/ψ mezon" data-language-autonym="Hrvatski" data-language-local-name="croate" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Mesone_J/Psi" title="Mesone J/Psi – italien" lang="it" hreflang="it" data-title="Mesone J/Psi" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%B8%E3%82%A7%E3%82%A4%E3%83%97%E3%82%B5%E3%82%A4%E4%B8%AD%E9%96%93%E5%AD%90" title="ジェイプサイ中間子 – japonais" lang="ja" hreflang="ja" data-title="ジェイプサイ中間子" data-language-autonym="日本語" data-language-local-name="japonais" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A0%9C%EC%9D%B4/%ED%94%84%EC%8B%9C_%EC%A4%91%EA%B0%84%EC%9E%90" title="제이/프시 중간자 – coréen" lang="ko" hreflang="ko" data-title="제이/프시 중간자" data-language-autonym="한국어" data-language-local-name="coréen" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Meson_J/psi" title="Meson J/psi – latin" lang="la" hreflang="la" data-title="Meson J/psi" data-language-autonym="Latina" data-language-local-name="latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/J/%CF%88-%D0%BC%D0%B5%D0%B7%D0%BE%D0%BD" title="J/ψ-мезон – macédonien" lang="mk" hreflang="mk" data-title="J/ψ-мезон" data-language-autonym="Македонски" data-language-local-name="macédonien" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/J/%CF%88-meson" title="J/ψ-meson – néerlandais" lang="nl" hreflang="nl" data-title="J/ψ-meson" data-language-autonym="Nederlands" data-language-local-name="néerlandais" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/J/psi-meson" title="J/psi-meson – norvégien nynorsk" lang="nn" hreflang="nn" data-title="J/psi-meson" data-language-autonym="Norsk nynorsk" data-language-local-name="norvégien nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl badge-Q70894304 mw-list-item" title=""><a href="https://pl.wikipedia.org/wiki/Mezon_J/%CF%88" title="Mezon J/ψ – polonais" lang="pl" hreflang="pl" data-title="Mezon J/ψ" data-language-autonym="Polski" data-language-local-name="polonais" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/J/%CF%88_%D9%85%DB%8C%D8%B2%D9%88%D9%86" title="J/ψ میزون – Western Punjabi" lang="pnb" hreflang="pnb" data-title="J/ψ میزون" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/M%C3%A9son_J/%CF%88" title="Méson J/ψ – portugais" lang="pt" hreflang="pt" data-title="Méson J/ψ" data-language-autonym="Português" data-language-local-name="portugais" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/J/Psi" title="J/Psi – roumain" lang="ro" hreflang="ro" data-title="J/Psi" data-language-autonym="Română" data-language-local-name="roumain" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/J/%CF%88-%D0%BC%D0%B5%D0%B7%D0%BE%D0%BD" title="J/ψ-мезон – russe" lang="ru" hreflang="ru" data-title="J/ψ-мезон" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/J/%CF%88_particle" title="J/ψ particle – Simple English" lang="en-simple" hreflang="en-simple" data-title="J/ψ particle" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/%C4%8Castica_J/ps%C3%AD" title="Častica J/psí – slovaque" lang="sk" hreflang="sk" data-title="Častica J/psí" data-language-autonym="Slovenčina" data-language-local-name="slovaque" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Mezon_J/%CE%A8" title="Mezon J/Ψ – slovène" lang="sl" hreflang="sl" data-title="Mezon J/Ψ" data-language-autonym="Slovenščina" data-language-local-name="slovène" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/J/%CF%88_meson" title="J/ψ meson – tagalog" lang="tl" hreflang="tl" data-title="J/ψ meson" data-language-autonym="Tagalog" data-language-local-name="tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/J/psi_mezonu" title="J/psi mezonu – turc" lang="tr" hreflang="tr" data-title="J/psi mezonu" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/J/%CF%88-%D0%BC%D0%B5%D0%B7%D0%BE%D0%BD" title="J/ψ-мезон – ukrainien" lang="uk" hreflang="uk" data-title="J/ψ-мезон" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/J/%CF%88%E4%BB%8B%E5%AD%90" title="J/ψ介子 – chinois" lang="zh" hreflang="zh" data-title="J/ψ介子" data-language-autonym="中文" data-language-local-name="chinois" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q876518#sitelinks-wikipedia" title="Modifier les liens interlangues" class="wbc-editpage">Modifier les liens</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espaces de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs 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class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/Fichier:Jpsi-fit-mass.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Jpsi-fit-mass.gif/260px-Jpsi-fit-mass.gif" decoding="async" width="260" height="247" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Jpsi-fit-mass.gif/390px-Jpsi-fit-mass.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/4/4d/Jpsi-fit-mass.gif 2x" data-file-width="496" data-file-height="472" /></a></span></div></div><table><caption style="color:var(--color-emphasized, #000000);text-align:center;background-color:#C0C0C0">Propriétés générales</caption><tbody><tr class=""><th scope="row">Classification</th><td class=""><div> <a href="/wiki/M%C3%A9son" title="Méson">Méson</a></div></td></tr><tr class=""><th scope="row">Composition</th><td class=""><div> <p>Paire <a href="/wiki/Quark" title="Quark">quark</a>-antiquark <a href="/wiki/Quark_charm" class="mw-redirect" title="Quark charm">charmé</a> :<br /> </p> <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle c{\overline {c}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>c</mi> <mrow class="MJX-TeXAtom-ORD"> <mover> <mi>c</mi> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle c{\overline {c}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/411fa6caeb3767e3608717ead204f633851217bf" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.129ex; height:2.343ex;" alt="{\displaystyle c{\overline {c}}}"></span></div></td></tr></tbody></table><table><caption style="color:var(--color-emphasized, #000000);text-align:center;background-color:#C0C0C0">Propriétés physiques</caption><tbody><tr class=""><th scope="row">Masse</th><td class=""><div> 3,096 916 <a href="/wiki/%C3%89lectron-volt" class="mw-redirect" title="Électron-volt">GeV</a>.<a href="/wiki/Vitesse_de_la_lumi%C3%A8re" title="Vitesse de la lumière">c</a><sup>-2</sup></div></td></tr><tr class=""><th scope="row"><a href="/wiki/Charge_%C3%A9lectrique" title="Charge électrique">Charge électrique</a></th><td class=""><div> 0 <a href="/wiki/Charge_%C3%A9l%C3%A9mentaire" title="Charge élémentaire">e</a></div></td></tr><tr class=""><th scope="row"><a href="/wiki/Spin" title="Spin">Spin</a></th><td class=""><div> 1</div></td></tr><tr class=""><th scope="row"><a href="/wiki/Dur%C3%A9e_de_vie_moyenne" title="Durée de vie moyenne">Durée de vie</a></th><td class=""><div> 7,2×10<sup>-21</sup> <a href="/wiki/Seconde_(temps)" title="Seconde (temps)">s</a></div></td></tr></tbody></table><p class="navbar noprint bordered navigation-not-searchable" style="border-top:1px solid #C0C0C0"><span class="plainlinks" style="text-align:left"><a class="external text" href="https://fr.wikipedia.org/w/index.php?title=M%C3%A9son_J%2F%CF%88&veaction=edit&section=0">modifier</a> - <a class="external text" href="https://fr.wikipedia.org/w/index.php?title=M%C3%A9son_J%2F%CF%88&action=edit&section=0">modifier le code</a> - <a href="https://www.wikidata.org/wiki/Q876518" class="extiw" title="d:Q876518">modifier Wikidata</a></span><span style="text-align:right"><span typeof="mw:File"><a href="/wiki/Mod%C3%A8le:Infobox_Particule" title="Documentation du modèle"><img alt="Documentation du modèle" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Info_Simple.svg/12px-Info_Simple.svg.png" decoding="async" width="12" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/38/Info_Simple.svg/18px-Info_Simple.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/38/Info_Simple.svg/24px-Info_Simple.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></span></p></div> <p>En <a href="/wiki/Physique_des_particules" title="Physique des particules">physique des particules</a>, le <b>J/ψ</b> (ψ étant la lettre grecque <a href="/wiki/Psi_(lettre_grecque)" title="Psi (lettre grecque)">psi</a>) est un <a href="/wiki/M%C3%A9son" title="Méson">méson</a>, une <a href="/wiki/Particule_subatomique" title="Particule subatomique">particule</a> composée d'un <a href="/wiki/Quark" title="Quark">quark</a> et d'un <a href="/wiki/Antiparticule" title="Antiparticule">antiquark</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Caractéristiques"><span id="Caract.C3.A9ristiques"></span>Caractéristiques</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=1" title="Modifier la section : Caractéristiques" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=1" title="Modifier le code source de la section : Caractéristiques"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Le J/ψ est un <a href="/wiki/M%C3%A9son" title="Méson">méson</a> sans <a href="/wiki/Saveur_(physique)" title="Saveur (physique)">saveur</a> composé d'un <a href="/wiki/Quark" title="Quark">quark</a> <a href="/wiki/Quark_charm" class="mw-redirect" title="Quark charm">charm</a> et d'un <a href="/wiki/Antimati%C3%A8re" title="Antimatière">antiquark</a> charm. Les mésons composés d'une paire charm-anticharm sont généralement connus sous le terme générique de « <a href="/wiki/Charmonium" class="mw-redirect" title="Charmonium">charmonium</a> » ; le J/ψ est le premier <a href="/wiki/Excitation_(physique)" title="Excitation (physique)">état excité</a> de charmonium (c'est-à-dire la forme de charmonium possédant la deuxième plus petite <a href="/wiki/Masse" title="Masse">masse</a>). </p><p>Le J/ψ possède une masse de 3 096,9 <a href="/wiki/%C3%89lectron-volt" class="mw-redirect" title="Électron-volt">MeV</a>.<a href="/wiki/Vitesse_de_la_lumi%C3%A8re" title="Vitesse de la lumière">c</a><sup>-2</sup> et une <a href="/wiki/Dur%C3%A9e_de_vie_moyenne" title="Durée de vie moyenne">durée de vie moyenne</a> de 7,2×10<sup>-21</sup> <a href="/wiki/Seconde_(temps)" title="Seconde (temps)">s</a>. Sa <a href="/wiki/Charge_%C3%A9lectrique" title="Charge électrique">charge électrique</a> est nulle. Son <a href="/wiki/Spin" title="Spin">spin</a> 1 en fait un <a href="/wiki/M%C3%A9son_vecteur" title="Méson vecteur">méson vecteur</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Histoire">Histoire</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=2" title="Modifier la section : Histoire" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=2" title="Modifier le code source de la section : Histoire"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Le J/ψ fut découvert indépendamment par deux groupes de recherche, le premier conduit par <a href="/wiki/Burton_Richter" title="Burton Richter">Burton Richter</a> au <a href="/wiki/Centre_de_l%27acc%C3%A9l%C3%A9rateur_lin%C3%A9aire_de_Stanford" title="Centre de l'accélérateur linéaire de Stanford">SLAC</a>, le deuxième par <a href="/wiki/Samuel_Ting" title="Samuel Ting">Samuel Ting</a> au <a href="/wiki/Laboratoire_national_de_Brookhaven" title="Laboratoire national de Brookhaven">laboratoire national de Brookhaven</a>, en 1974. Les deux groupes annoncèrent leur découverte le <time class="nowrap" datetime="1974-11-11" data-sort-value="1974-11-11">11 novembre 1974</time>. </p><p>Richter nomma la particule avec la lettre grecque <a href="/wiki/%CE%A8" class="mw-redirect" title="Ψ">ψ</a> tandis que Ting lui assigna la lettre <i>J</i> (notez que le <a href="/wiki/Sinogramme" class="mw-redirect" title="Sinogramme">sinogramme</a> 丁, se prononçant « ting » en <a href="/wiki/Mandarin_(langue)" title="Mandarin (langue)">mandarin</a> ressemble à un <i>J</i>). Du fait de la <a href="/wiki/Simultan%C3%A9it%C3%A9" title="Simultanéité">simultanéité</a> des deux découvertes, les publications scientifiques ultérieures firent référence à la particule par J/ψ. </p><p>Richter et Ting reçurent le <a href="/wiki/Prix_Nobel_de_physique" title="Prix Nobel de physique">prix Nobel de physique</a> en 1976 pour leur découverte. </p> <div class="mw-heading mw-heading2"><h2 id="Applications">Applications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=3" title="Modifier la section : Applications" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=3" title="Modifier le code source de la section : Applications"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>En 2019, des mésons J/ψ produits en bombardant une cible de <a href="/wiki/Cuivre" title="Cuivre">cuivre</a> par des <a href="/wiki/%C3%89lectron" title="Électron">électrons</a> (ce qui produit des <a href="/wiki/Photon" title="Photon">photons</a> de haute énergie, qui se convertissent en J/ψ), ont servi à bombarder une cible d'<a href="/wiki/Hydrog%C3%A8ne_liquide" title="Hydrogène liquide">hydrogène liquide</a> (riche en <a href="/wiki/Proton" title="Proton">protons</a>). Les <a href="/wiki/Quark" title="Quark">quarks</a> des mésons J/ψ interagissent avec les <a href="/wiki/Gluon" title="Gluon">gluons</a> du proton. Le méson J/ψ ayant une durée de vie très courte et se désintégrant en une paire électron-<a href="/wiki/Positon" title="Positon">positon</a>, ce sont ces paires que l'on a détectées et dont on a analysé les caractéristiques. L'analyse de cette expérience a permis en 2023 d'estimer le <a href="/wiki/Proton#Rayon_de_masse" title="Proton">rayon de masse</a> et le <a href="/wiki/Proton#Rayon_scalaire" title="Proton">rayon scalaire</a> du proton, trouvés respectivement plus petit et plus grand que le <a href="/wiki/Probl%C3%A8me_de_la_taille_du_proton" title="Problème de la taille du proton">rayon de charge</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite_crochet">[</span>1<span class="cite_crochet">]</span></a></sup><sup class="reference cite_virgule">,</sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite_crochet">[</span>2<span class="cite_crochet">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Notes_et_références"><span id="Notes_et_r.C3.A9f.C3.A9rences"></span>Notes et références</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=4" title="Modifier la section : Notes et références" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=4" title="Modifier le code source de la section : Notes et références"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="references-small decimal" style=""><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink noprint"><a href="#cite_ref-1">↑</a> </span><span class="reference-text"><span class="ouvrage" id="Bailly2023"><span class="ouvrage" id="Sean_Bailly2023">Sean Bailly, « <cite style="font-style:normal">L'anatomie du proton, plus complexe que prévu</cite> », <i><a href="/wiki/Pour_la_science" title="Pour la science">Pour la science</a></i>, <abbr class="abbr" title="numéro">n<sup>o</sup></abbr> 547,‎ <time class="nowrap" datetime="2023-05" data-sort-value="2023-05">mai 2023</time>, <abbr class="abbr" title="pages">p.</abbr> <span class="nowrap">6-7</span> <small style="line-height:1em;">(<a rel="nofollow" class="external text" href="https://issuu.com/pourlascience/docs/plsp0547_kiosque150/s/23205146">présentation en ligne</a>)</small><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=L%27anatomie+du+proton%2C+plus+complexe+que+pr%C3%A9vu&rft.jtitle=Pour+la+science&rft.issue=547&rft.aulast=Bailly&rft.aufirst=Sean&rft.date=2023-05&rft.pages=6-7&rfr_id=info%3Asid%2Ffr.wikipedia.org%3AM%C3%A9son+J%2F%CF%88"></span></span></span>.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink noprint"><a href="#cite_ref-2">↑</a> </span><span class="reference-text"><span class="ouvrage" id="DuranMezianiJoostenJones2023"><span class="ouvrage" id="B._DuranZ.-E._MezianiS._JoostenM._K._Jones2023"><abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> B. Duran, Z.-E. Meziani, S. Joosten, M. K. Jones, S. Prasad <i><abbr class="abbr" title="et alii (et d’autres)">et al.</abbr></i>, « <cite style="font-style:normal" lang="en">Determining the gluonic gravitational form factors of the proton</cite> », <i><span class="lang-en" lang="en"><a href="/wiki/Nature_(revue)" title="Nature (revue)">Nature</a></span></i>, <abbr class="abbr" title="volume">vol.</abbr> 615,‎ <time class="nowrap" datetime="2023-03-29" data-sort-value="2023-03-29">29 mars 2023</time>, <abbr class="abbr" title="pages">p.</abbr> <span class="nowrap">813-816</span> <small style="line-height:1em;">(<a href="/wiki/Digital_Object_Identifier" title="Digital Object Identifier">DOI</a> <span class="plainlinks noarchive nowrap"><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1038/s41586-023-05730-4">10.1038/s41586-023-05730-4</a></span>)</small><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Determining+the+gluonic+gravitational+form+factors+of+the+proton&rft.jtitle=Nature&rft.aulast=Duran&rft.aufirst=B.&rft.au=Z.-E.+Meziani&rft.au=S.+Joosten&rft.au=M.+K.+Jones&rft.au=S.+Prasad&rft.date=2023-03-29&rft.volume=615&rft.pages=813-816&rft_id=info%3Adoi%2F10.1038%2Fs41586-023-05730-4&rfr_id=info%3Asid%2Ffr.wikipedia.org%3AM%C3%A9son+J%2F%CF%88"></span></span></span>.</span> </li> </ol></div> </div> <div class="mw-heading mw-heading2"><h2 id="Voir_aussi">Voir aussi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=5" title="Modifier la section : Voir aussi" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=5" title="Modifier le code source de la section : Voir aussi"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Articles_connexes">Articles connexes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=6" title="Modifier la section : Articles connexes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=6" title="Modifier le code source de la section : Articles connexes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/M%C3%A9son" title="Méson">Méson</a></li> <li><a href="/wiki/Quarkonium" title="Quarkonium">Quarkonium</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Liens_externes">Liens externes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&veaction=edit&section=7" title="Modifier la section : Liens externes" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=M%C3%A9son_J/%CF%88&action=edit&section=7" title="Modifier le code source de la section : Liens externes"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><abbr class="abbr indicateur-format format-pdf" title="Document au format Portable Document Format (PDF)">[PDF]</abbr> <abbr class="abbr indicateur-langue" title="Langue : anglais">(en)</abbr> <a rel="nofollow" class="external text" href="http://pdg.lbl.gov/2006/listings/m070.pdf">Caractéristiques du J/Ψ</a> (<i>Particle Data Group</i>)</li></ul> <div class="navbox-container" style="clear:both;"> <table class="navbox collapsible noprint collapsed" style=""> <tbody><tr><th class="navbox-title" colspan="2" style=""><div style="float:left; width:6em; text-align:left"><div class="noprint plainlinks nowrap tnavbar" style="padding:0; font-size:xx-small; color:var(--color-emphasized, #000000);"><a href="/wiki/Mod%C3%A8le:Palette_Tableau_particules" title="Modèle:Palette Tableau particules"><abbr class="abbr" title="Voir ce modèle.">v</abbr></a> · <a class="external text" href="https://fr.wikipedia.org/w/index.php?title=Mod%C3%A8le:Palette_Tableau_particules&action=edit"><abbr class="abbr" title="Modifier ce modèle. Merci de prévisualiser avant de sauvegarder.">m</abbr></a></div></div><div style="font-size:110%"><a href="/wiki/Physique_des_particules" title="Physique des particules">Particules en physique</a></div></th> </tr> <tr> <th class="navbox-group" style="width:80px;"><a href="/wiki/Particule_%C3%A9l%C3%A9mentaire" title="Particule élémentaire">Élémentaires</a></th> <td class="navbox-list" style=""><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Boson" title="Boson">Bosons</a></th> <td class="navbox-list" style="text-align:left;;"><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Boson_de_jauge" title="Boson de jauge">de jauge</a></th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Photon" title="Photon">Photon (γ)</a></li> <li><a href="/wiki/Gluon" title="Gluon">Gluon (g)</a></li> <li><a href="/wiki/Bosons_W_et_Z" title="Bosons W et Z">Bosons W et Z</a> <ul><li><a href="/wiki/Boson_W" title="Boson W">Boson W<sup>±</sup></a></li> <li><a href="/wiki/Boson_Z" title="Boson Z">Boson Z<sup>0</sup></a></li></ul></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Boson_scalaire" class="mw-redirect" title="Boson scalaire">scalaire</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Boson_de_Higgs" title="Boson de Higgs">Boson de Higgs (H<sup>0</sup>)</a></li></ul> </div></td> </tr> </tbody></table></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Fermion" title="Fermion">Fermions</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Quark" title="Quark">Quarks</a></th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Quark_down" title="Quark down"><span class="lang-en" lang="en"><i>Down</i></span> (d)</a></li> <li><a href="/wiki/Quark_up" title="Quark up"><span class="lang-en" lang="en"><i>Up</i></span> (u)</a></li> <li><a href="/wiki/Quark_%C3%A9trange" title="Quark étrange"><span class="lang-en" lang="en"><i>Strange</i></span> (s)</a></li> <li><a href="/wiki/Quark_charm%C3%A9" title="Quark charmé"><span class="lang-en" lang="en"><i>Charm</i></span> (c)</a></li> <li><a href="/wiki/Quark_bottom" title="Quark bottom"><span class="lang-en" lang="en"><i>Bottom</i></span> (b)</a></li> <li><a href="/wiki/Quark_top" title="Quark top"><span class="lang-en" lang="en"><i>Top</i></span> (t)</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Lepton" title="Lepton">Leptons</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/%C3%89lectron" title="Électron">Électron (e<sup>-</sup>)</a> <span typeof="mw:File"><span title="Article de qualité"><img alt="Article de qualité" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Article_de_qualit%C3%A9.svg/10px-Article_de_qualit%C3%A9.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Article_de_qualit%C3%A9.svg/15px-Article_de_qualit%C3%A9.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Article_de_qualit%C3%A9.svg/20px-Article_de_qualit%C3%A9.svg.png 2x" data-file-width="20" data-file-height="20" /></span></span></li> <li><a href="/wiki/Positon" title="Positon">Positon (e<sup>+</sup>)</a></li> <li><a href="/wiki/Muon" title="Muon">Muon (μ<sup>-</sup>)</a></li> <li><a href="/wiki/Antimuon" title="Antimuon">Antimuon (μ<sup>+</sup>)</a></li> <li><a href="/wiki/Tau_(particule)" title="Tau (particule)">Tau (τ<sup>-</sup>)</a></li> <li><a href="/wiki/Antitau" title="Antitau">Antitau (τ<sup>+</sup>)</a></li> <li><a href="/wiki/Neutrino" title="Neutrino">Neutrinos</a> <ul><li>ν<sub>e</sub></li> <li>ν̅<sub>e</sub></li> <li>ν<sub>μ</sub></li> <li>ν̅<sub>μ</sub></li> <li>ν<sub>τ</sub></li> <li>ν̅<sub>τ</sub></li></ul></li></ul> </div></td> </tr> </tbody></table></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;">Hypothétiques</th> <td class="navbox-list" style="text-align:left;;"><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Boson" title="Boson">Bosons</a></th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/w/index.php?title=Bosons_W%CA%B9_et_Z%CA%B9&action=edit&redlink=1" class="new" title="Bosons Wʹ et Zʹ (page inexistante)">Bosons Wʹ et Zʹ</a> <a href="https://en.wikipedia.org/wiki/W%27_and_Z%27_bosons" class="extiw" title="en:W' and Z' bosons"><span class="indicateur-langue" title="Article en anglais : « W' and Z' bosons »">(en)</span></a></li> <li><a href="/w/index.php?title=Bosons_X_et_Y&action=edit&redlink=1" class="new" title="Bosons X et Y (page inexistante)">Bosons X et Y</a> <a href="https://en.wikipedia.org/wiki/X_and_Y_bosons" class="extiw" title="en:X and Y bosons"><span class="indicateur-langue" title="Article en anglais : « X and Y bosons »">(en)</span></a></li> <li><a href="/wiki/Graviton" title="Graviton">Graviton (G)</a></li> <li><a href="/wiki/Axion" title="Axion">Axion (A<sup>0</sup>)</a></li> <li><a href="/w/index.php?title=Majoron&action=edit&redlink=1" class="new" title="Majoron (page inexistante)">Majoron (J)</a> <a href="https://en.wikipedia.org/wiki/Majoron" class="extiw" title="en:Majoron"><span class="indicateur-langue" title="Article en anglais : « Majoron »">(en)</span></a></li> <li><a href="/wiki/Particule_X17" title="Particule X17">Particule X17</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Fermion" title="Fermion">Fermions</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><a href="/wiki/Neutrino_st%C3%A9rile" title="Neutrino stérile">Neutrino stérile</a></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Superpartenaire" title="Superpartenaire">Super-partenaires</a></th> <td class="navbox-list" style="text-align:left;;"><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;">de bosons</th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Photino" title="Photino">Photino</a></li> <li><a href="/wiki/Neutralino" title="Neutralino">Neutralinos</a> <ul><li>Wino</li> <li><a href="/w/index.php?title=Bino_(particule)&action=edit&redlink=1" class="new" title="Bino (particule) (page inexistante)">Bino</a></li> <li><a href="/wiki/Higgsino" title="Higgsino">Higgsino</a></li></ul></li> <li><a href="/wiki/Jaugino" title="Jaugino">Jauginos</a> <ul><li><a href="/wiki/Gluino" title="Gluino">Gluino</a></li> <li><a href="/wiki/Zino_(particule)" title="Zino (particule)">Zino</a></li> <li><a href="/wiki/Gravitino" title="Gravitino">Gravitino</a></li> <li><a href="/wiki/Axino" title="Axino">Axino</a></li></ul></li> <li><a href="/wiki/Chargino" title="Chargino">Charginos</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Sfermion" title="Sfermion">de fermions</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Squark" class="mw-redirect" title="Squark">Squarks</a></li> <li><a href="/wiki/Slepton" class="mw-redirect" title="Slepton">Sleptons</a></li></ul> </div></td> </tr> </tbody></table></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;">Autres</th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/w/index.php?title=Leptoquarks&action=edit&redlink=1" class="new" title="Leptoquarks (page inexistante)">Leptoquarks</a> <a href="https://en.wikipedia.org/wiki/Leptoquark" class="extiw" title="en:Leptoquark"><span class="indicateur-langue" title="Article en anglais : « Leptoquark »">(en)</span></a></li> <li><a href="/wiki/Inflaton" title="Inflaton">Inflaton</a></li> <li><a href="/wiki/Dilaton" title="Dilaton">Dilaton</a></li> <li><a href="/wiki/Tachyon" title="Tachyon">Tachyon</a></li> <li><a href="/wiki/Corde_(physique)" title="Corde (physique)">Corde</a></li> <li><a href="/wiki/Pr%C3%A9on" title="Préon">Préon</a></li></ul> </div></td> </tr> </tbody></table></td> </tr> </tbody></table></td> </tr> <tr> <th class="navbox-group" style="width:80px;"><a href="/wiki/Particule_composite" title="Particule composite">Composites</a></th> <td class="navbox-list navbox-even" style=""><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Hadron" title="Hadron">Hadrons</a></th> <td class="navbox-list" style="text-align:left;;"><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/M%C3%A9son" title="Méson">Mésons</a></th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Quarkonium" title="Quarkonium">Quarkoniums</a> <ul><li><a class="mw-selflink selflink">J/ψ</a></li> <li><a href="/wiki/M%C3%A9son_%C3%AAta_charm%C3%A9" title="Méson êta charmé">η<sub>c</sub></a></li></ul></li> <li>Bottomoniums <ul><li><a href="/wiki/M%C3%A9son_upsilon" title="Méson upsilon">ϒ</a></li> <li><a href="/wiki/M%C3%A9son_%C3%AAta_bottom" title="Méson êta bottom">η<sub>b</sub></a></li></ul></li> <li><a href="/wiki/M%C3%A9son_th%C3%AAta" title="Méson thêta">Méson thêta (θ)</a></li> <li><a href="/wiki/M%C3%A9son_phi" title="Méson phi">Méson phi (φ)</a></li> <li><a href="/wiki/Pion_(particule)" title="Pion (particule)">Pions</a> <ul><li>π<sup>-</sup></li> <li>π<sup>+</sup></li> <li>π<sup>0</sup></li> <li>π̅<sup>0</sup></li></ul></li> <li><a href="/wiki/Kaon" title="Kaon">Kaons</a> <ul><li>K<sup>-</sup></li> <li>K<sup>+</sup></li> <li>K<sup>0</sup></li> <li>K̅<sup>0</sup></li></ul></li> <li>Mésons <ul><li><a href="/wiki/M%C3%A9son_rho" title="Méson rho">rho (ρ)</a></li> <li><a href="/wiki/M%C3%A9son_om%C3%A9ga" title="Méson oméga">oméga (ω)</a></li> <li><a href="/wiki/M%C3%A9son_D" title="Méson D">D</a></li> <li><a href="/wiki/M%C3%A9son_%C3%AAta" title="Méson êta">êta (η)</a></li> <li><a href="/w/index.php?title=M%C3%A9son_%C3%AAta_prime&action=edit&redlink=1" class="new" title="Méson êta prime (page inexistante)">êta prime (ηʹ)</a></li> <li><a href="/wiki/M%C3%A9son_B" title="Méson B">Méson B</a> <ul><li>B<sup>0</sup>-B̅<sup>0</sup></li> <li>B<sub>s</sub><sup>0</sup>-B̅<sub>s</sub><sup>0</sup></li> <li>B<sup>-</sup>, B<sup>+</sup></li> <li>B<sub>c</sub><sup>-</sup>, B<sub>c</sub><sup>+</sup></li></ul></li> <li><a href="/wiki/M%C3%A9son_T" title="Méson T">T</a></li></ul></li> <li><a href="/wiki/T%C3%A9traquark" title="Tétraquark">Tétraquark</a></li> <li><a href="/wiki/M%C3%A9son_scalaire" title="Méson scalaire">Méson scalaire</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Baryon" title="Baryon">Baryons</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Nucl%C3%A9on" title="Nucléon">Nucléons</a> <ul><li><a href="/wiki/Proton" title="Proton">Proton (p)</a></li> <li><a href="/wiki/Antiproton" title="Antiproton">Antiproton (p̅)</a></li> <li><a href="/wiki/Neutron" title="Neutron">Neutron (n)</a></li> <li><a href="/wiki/Antineutron" title="Antineutron">Antineutron (n̄)</a></li></ul></li> <li><a href="/wiki/Baryon_Delta" title="Baryon Delta">Baryons Delta</a> <ul><li>Δ<sup>++</sup></li> <li>Δ<sup>+</sup></li> <li>Δ<sup>0</sup></li> <li>Δ<sup>−</sup></li></ul></li> <li><a href="/wiki/Hyp%C3%A9ron" title="Hypéron">Hypérons</a> <ul><li><a href="/wiki/Baryon_Lambda" title="Baryon Lambda">Λ</a></li> <li><a href="/wiki/Baryon_Sigma" title="Baryon Sigma">Σ</a></li> <li><a href="/wiki/Baryon_Xi" title="Baryon Xi">Ξ</a></li> <li><a href="/wiki/Baryon_Om%C3%A9ga" title="Baryon Oméga">Ω</a></li></ul></li> <li><a href="/wiki/Pentaquark" title="Pentaquark">Pentaquark</a></li></ul> </div></td> </tr> </tbody></table></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;">Autres</th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Atome_exotique" title="Atome exotique">Atomes exotiques</a> <ul><li><a href="/wiki/Onium" title="Onium">Oniums leptoniques</a> <ul><li><a href="/wiki/Positronium" title="Positronium">Positronium</a></li> <li><a href="/wiki/Vrai_muonium" title="Vrai muonium">Vrai muonium</a></li> <li><a href="/w/index.php?title=Vrai_tauonium&action=edit&redlink=1" class="new" title="Vrai tauonium (page inexistante)">Vrai tauonium</a></li></ul></li> <li><a href="/wiki/Onium" title="Onium">Oniums mésoniques</a> <ul><li><a href="/wiki/Pionium" title="Pionium">Pionium</a></li> <li><a href="/w/index.php?title=Kaonium&action=edit&redlink=1" class="new" title="Kaonium (page inexistante)">Kaonium</a> <a href="https://en.wikipedia.org/wiki/Kaonium" class="extiw" title="en:Kaonium"><span class="indicateur-langue" title="Article en anglais : « Kaonium »">(en)</span></a></li></ul></li> <li><a href="/wiki/Muonium" title="Muonium">Muonium</a></li> <li><a href="/w/index.php?title=Tauonium&action=edit&redlink=1" class="new" title="Tauonium (page inexistante)">Tauonium</a></li> <li><a href="/wiki/Protonium" title="Protonium">Protonium</a></li> <li><a href="/wiki/H%C3%A9lium_antiprotonique" title="Hélium antiprotonique">Hélium antiprotonique</a></li> <li><a href="/wiki/Hydrog%C3%A8ne_muonique" title="Hydrogène muonique">Hydrogène muonique</a></li> <li><a href="/wiki/H%C3%A9lium_muonique" class="mw-redirect" title="Hélium muonique">Hélium muonique</a></li> <li><a href="/wiki/Hydrog%C3%A8ne_kaonique" title="Hydrogène kaonique">Hydrogène kaonique</a></li> <li><a href="/wiki/H%C3%A9lium_kaonique" title="Hélium kaonique">Hélium kaonique</a></li></ul></li> <li><a href="/wiki/Noyau_atomique" title="Noyau atomique">Noyau atomique</a></li> <li><a href="/wiki/Hypernoyau" title="Hypernoyau">Hypernoyau</a> <ul><li><a href="/wiki/Hypertriton" title="Hypertriton">Hypertriton</a></li></ul></li> <li><a href="/wiki/Atome" title="Atome">Atome</a></li> <li><a href="/wiki/Mol%C3%A9cule" title="Molécule">Molécule</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;">Hypothétiques</th> <td class="navbox-list" style="text-align:left;;"><table class="navbox-subgroup" style=""> <tbody><tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/M%C3%A9son" title="Méson">Mésons</a></th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Boule_de_glu" title="Boule de glu">Boule de glu</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;"><a href="/wiki/Baryon" title="Baryon">Baryons</a></th> <td class="navbox-list navbox-even" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/R%C3%A9sonance_de_Roper" title="Résonance de Roper">Résonance de Roper</a></li> <li><a href="/w/index.php?title=Dibaryon&action=edit&redlink=1" class="new" title="Dibaryon (page inexistante)">Dibaryon</a> <a href="https://en.wikipedia.org/wiki/Dibaryon" class="extiw" title="en:Dibaryon"><span class="indicateur-langue" title="Article en anglais : « Dibaryon »">(en)</span></a></li> <li><a href="/wiki/Hexaquark" title="Hexaquark">Hexaquark</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:50px; background:#e6e6ff;">Autres</th> <td class="navbox-list" style="text-align:left;;"><div class="liste-horizontale"> <ul><li><a href="/wiki/Mol%C3%A9cule_m%C3%A9sonique" title="Molécule mésonique">Molécule mésonique</a></li> <li><a href="/w/index.php?title=Pom%C3%A9ron&action=edit&redlink=1" class="new" title="Poméron (page inexistante)">Poméron</a> <a href="https://en.wikipedia.org/wiki/Pomeron" class="extiw" title="en:Pomeron"><span class="indicateur-langue" title="Article en anglais : « Pomeron »">(en)</span></a></li> <li><a href="/w/index.php?title=Odd%C3%A9ron&action=edit&redlink=1" class="new" title="Oddéron (page inexistante)">Oddéron</a> <a href="https://en.wikipedia.org/wiki/Odderon" class="extiw" title="en:Odderon"><span class="indicateur-langue" title="Article en anglais : « Odderon »">(en)</span></a></li></ul> </div></td> </tr> </tbody></table></td> </tr> </tbody></table></td> </tr> <tr> <th class="navbox-group" style="width:80px;"><a href="/wiki/Quasi-particule" title="Quasi-particule">Quasi-particules</a></th> <td class="navbox-list" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Exciton" title="Exciton">Exciton</a></li> <li><a href="/wiki/Fluxon" title="Fluxon">Fluxon</a></li> <li><a href="/wiki/Magnon_(physique)" title="Magnon (physique)">Magnon</a></li> <li><a href="/wiki/Phonon" title="Phonon">Phonon</a></li> <li><a href="/wiki/Plasmon" title="Plasmon">Plasmon</a></li> <li><a href="/wiki/Polariton" title="Polariton">Polariton</a></li> <li><a href="/wiki/Polaron" title="Polaron">Polaron</a></li> <li><a href="/wiki/Soliton" title="Soliton">Soliton</a></li> <li><a href="/w/index.php?title=Champ_fant%C3%B4me_de_Faddeev%E2%80%93Popov-DeWitt&action=edit&redlink=1" class="new" title="Champ fantôme de Faddeev–Popov-DeWitt (page inexistante)">Ghost</a> <a href="https://en.wikipedia.org/wiki/Faddeev-Popov_ghost" class="extiw" title="en:Faddeev-Popov ghost"><span class="indicateur-langue" title="Article en anglais : « Faddeev-Popov ghost »">(en)</span></a></li> <li><a href="/wiki/Roton_(physique)" title="Roton (physique)">Roton</a></li> <li><a href="/wiki/Monop%C3%B4le_magn%C3%A9tique" title="Monopôle magnétique">Monopôle magnétique</a></li> <li><a href="/wiki/Trou_d%27%C3%A9lectron" title="Trou d'électron">Trou d'électron</a></li> <li><a href="/wiki/Instanton" title="Instanton">Instanton</a></li> <li><a href="/wiki/Anyon" title="Anyon">Anyon</a></li></ul> </div></td> </tr> <tr> <td class="navbox-banner" style="" colspan="2"><a href="/wiki/Liste_des_particules" title="Liste des particules">Liste des particules</a></td></tr></tbody></table> </div> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:Physique" title="Portail de la physique"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Circle-icons-physics-logo.svg/24px-Circle-icons-physics-logo.svg.png" decoding="async" width="24" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Circle-icons-physics-logo.svg/36px-Circle-icons-physics-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/22/Circle-icons-physics-logo.svg/48px-Circle-icons-physics-logo.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></span> <span class="bandeau-portail-texte"><a href="/wiki/Portail:Physique" title="Portail:Physique">Portail de la physique</a></span> </span></li> </ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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