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<div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">International collaboration of particle physicists</div> <p>The <b>Particle Data Group</b> (<b>PDG</b>) is an international collaboration of <a href="/wiki/Particle_physics" title="Particle physics">particle physicists</a> that compiles and reanalyzes published results related to the properties of <a href="/wiki/List_of_particles" title="List of particles">particles</a> and <a href="/wiki/Fundamental_interaction" title="Fundamental interaction">fundamental interactions</a>. It also publishes reviews of theoretical results that are phenomenologically relevant, including those in related fields such as <a href="/wiki/Cosmology" title="Cosmology">cosmology</a>. The PDG currently publishes the <i>Review of Particle Physics</i> and its pocket version, the <i>Particle Physics Booklet</i>, which are printed biennially as books, and updated annually via the <a href="/wiki/World_Wide_Web" title="World Wide Web">World Wide Web</a>. </p><p>In previous years, the PDG has published the <i>Pocket Diary for Physicists</i>, a calendar with the dates of key international conferences and contact information of major <a href="/wiki/High_energy_physics" class="mw-redirect" title="High energy physics">high energy physics</a> institutions, which is now discontinued.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> PDG also further maintains the standard numbering scheme for particles in <a href="/wiki/Event_generator" title="Event generator">event generators</a>, in association with the event generator authors. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Review_of_Particle_Physics"><i>Review of Particle Physics</i></h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Particle_Data_Group&action=edit&section=1" title="Edit section: Review of Particle Physics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <i>Review of Particle Physics</i><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> (formerly <i>Review of Particle Properties</i>, <i>Data on Particles and Resonant States</i>, and <i>Data on Elementary Particles and Resonant States</i>) is a voluminous, 1,200+ page reference work which summarizes particle properties and reviews the current status of <a href="/wiki/Elementary_particle_physics" class="mw-redirect" title="Elementary particle physics">elementary particle physics</a>, <a href="/wiki/General_relativity" title="General relativity">general relativity</a> and <a href="/wiki/Big-bang" class="mw-redirect" title="Big-bang">big-bang</a> cosmology. Usually singled out for <a href="/wiki/Citation_analysis" title="Citation analysis">citation analysis</a>, it is currently the most cited article in <a href="/wiki/High_energy_physics" class="mw-redirect" title="High energy physics">high energy physics</a>, being cited more than 2,000 times annually in the scientific literature (as of 2009<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Particle_Data_Group&action=edit">[update]</a></sup>).<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>The Review is currently divided into 3 sections: </p> <ul><li><b>Particle Physics Summary Tables</b>—Brief tables of particles: <a href="/wiki/Gauge_boson" title="Gauge boson">gauge</a> and <a href="/wiki/Higgs_boson" title="Higgs boson">higgs bosons</a>, <a href="/wiki/Lepton" title="Lepton">leptons</a>, <a href="/wiki/Quark" title="Quark">quarks</a>, <a href="/wiki/Meson" title="Meson">mesons</a>, <a href="/wiki/Baryon" title="Baryon">baryons</a>, constraints for the search for hypothetical particles and violation of physical laws.</li> <li><b>Reviews, Tables and Plots</b>—Review of fundamental concepts from mathematics and statistics, table of <a href="/wiki/Clebsch-Gordan_coefficient" class="mw-redirect" title="Clebsch-Gordan coefficient">Clebsch-Gordan coefficients</a>, <a href="/wiki/Periodic_table_of_elements" class="mw-redirect" title="Periodic table of elements">periodic table of elements</a>, table of <a href="/wiki/Electron" title="Electron">electronic</a> configuration of the elements, brief table of material properties, review of current status in the fields of <a href="/wiki/Standard_Model" title="Standard Model">Standard Model</a>, <a href="/wiki/Cosmology" title="Cosmology">Cosmology</a>, and <a href="/wiki/Experiment" title="Experiment">experimental</a> method of particle physics, and with tables of fundamental physical and astronomical constants (many from <a href="/wiki/CODATA" class="mw-redirect" title="CODATA">CODATA</a> and the <a href="/wiki/Astronomical_Almanac" title="Astronomical Almanac">Astronomical Almanac</a>).</li> <li><b>Particle Listings</b>—Comprehensive version of the <i>Particle Physics Summary Tables</i>, with all significant measurements fully referenced.</li></ul> <p>A condensed version of the <i>Review</i>, with the <i>Summary Tables</i>, a significantly shortened <i>Reviews, Tables and Plots</i>, and without the <i>Particle Listings</i>, is available as a 300-page, pocket-sized <i>Particle Physics Booklet</i>. </p><p>The history of <i>Review of Particle Physics</i> can be traced back to the 1957 article <i>Hyperons and Heavy Mesons (Systematics and Decay)</i> by <a href="/wiki/Murray_Gell-Mann" title="Murray Gell-Mann">Murray Gell-Mann</a> and <a href="/wiki/Arthur_H._Rosenfeld" title="Arthur H. Rosenfeld">Arthur H. Rosenfeld</a>,<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> and the unpublished update tables for its data with the title <i>Data for Elementary Particle Physics</i> (<a href="/wiki/University_of_California_Radiation_Laboratory" class="mw-redirect" title="University of California Radiation Laboratory">University of California Radiation Laboratory</a> <i>Technical Report UCRL-8030</i>)<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> that were circulated before the actual publication of the original article. In 1963, <a href="/w/index.php?title=Matts_Roos&action=edit&redlink=1" class="new" title="Matts Roos (page does not exist)">Matts Roos</a> independently published a compilation <i>Data on Elementary Particles and Resonant States</i>.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> On his suggestion, the two publications were merged a year later into the 1964 <i>Data on Elementary Particles and Resonant States</i>. </p><p>The publication underwent three renamings thereafter: 1965 into <i>Data on Particles and Resonant States</i>, 1970 into <i>Review of Particle Properties</i>, and 1996 into the present form <i>Review of Particle Physics</i>. Starting with 1972, the <i>Review</i> no longer appear exclusively in <i><a href="/wiki/Reviews_of_Modern_Physics" title="Reviews of Modern Physics">Reviews of Modern Physics</a></i>, but also in <i><a href="/wiki/Physics_Letters_B" class="mw-redirect" title="Physics Letters B">Physics Letters B</a></i>, <i><a href="/wiki/European_Physical_Journal_C" title="European Physical Journal C">European Physical Journal C</a></i>, <i><a href="/wiki/Journal_of_Physics_G" title="Journal of Physics G">Journal of Physics G</a></i>, <i><a href="/wiki/Physical_Review_D" class="mw-redirect" title="Physical Review D">Physical Review D</a></i>, and <i><a href="/wiki/Chinese_Physics_C" title="Chinese Physics C">Chinese Physics C</a></i> (depending on the year). </p> <div class="mw-heading mw-heading3"><h3 id="Past_editions_of_Review_of_Particle_Physics">Past editions of <i>Review of Particle Physics</i></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Particle_Data_Group&action=edit&section=2" title="Edit section: Past editions of Review of Particle Physics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table border="0" cellpadding="5" cellspacing="0" width="100%" align="center" style="vertical-align:top;font-size:95%"> <tbody><tr style="background:#ddd;"> <th width="15%">Year </th> <th width="40%">Title </th> <th width="45%">Reference </th></tr> <tr style="background:#eee;" valign="top"> <td>1957–1963 </td> <td>Hyperons and Heavy Mesons (Systematics and Decay) </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1146/annurev.ns.07.120157.002203">M. Gell-Mann & A. H. Rosenfeld, <i>Annu. Rev. Nucl. Sci.</i> <b>7</b>, 407 (1957).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td> </td> <td>Data for Elementary Particle Physics </td> <td><a href="/wiki/University_of_California_Radiation_Laboratory" class="mw-redirect" title="University of California Radiation Laboratory">University of California Radiation Laboratory</a> <i>Technical Report UCRL-8030</i> (unpublished). </td></tr> <tr style="background:#eee;" valign="top"> <td> </td> <td>Data on Elementary Particles and Resonant States, November 1963; Tables of Elementary Particles and Resonant States </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0029-5582(64)90671-6">M. Roos,<i> Nucl. Phys.</i> <b>52</b>, 1 (1964)</a>;<br /> <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1103/RevModPhys.35.314">M. Roos, <i>Rev. Mod. Phys.</i> <b>35</b>, 314 (1963).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1964 </td> <td>Data on Elementary Particles and Resonant States </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v36/p977">A. H. Rosenfeld <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>36</b>, 977 (1964).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1965 </td> <td>Data on Particles and Resonant States </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v37/p633">A. H. Rosenfeld <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>37</b>, 633 (1965).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1967 </td> <td>Data on Particles and Resonant States </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v39/p1">A. H. Rosenfeld <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>39</b>, 1 (1967).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1968 </td> <td>Data on Particles and Resonant States </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v40/p77">A. H. Rosenfeld <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>40</b>, 77 (1968).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1969 </td> <td>Data on Particles and Resonant States </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v41/p109">N. Barash-Schmidt <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>41</b>, 109 (1969).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1970 </td> <td>Review of Particle Properties </td> <td><a href="/wiki/Lina_Galtieri" title="Lina Galtieri">A. Barbaro-Galtieri</a> <i>et al.</i>, <a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v42/p87"><i>Rev. Mod. Phys.</i> <b>42</b>, 87 (1970).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1971 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v43/pS1">A. Rittenberg <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>43</b>, S1 (1970).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1972 </td> <td>Review of Particle Properties </td> <td><a href="/wiki/Lina_Galtieri" title="Lina Galtieri">A. Barbaro-Galtieri</a> <i>et al.</i>, <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(72)90840-4"><i>Phys. Lett. B</i> <b>39</b>, 1 (1972).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1973 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v45/pS1">T. A. Lasinski <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>45</b>, S1 (1973).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1974 </td> <td>Review of Particle Properties </td> <td><a href="/wiki/Lina_Galtieri" title="Lina Galtieri">A. Barbaro-Galtieri</a> <i>et al.</i>, <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(74)90738-2"><i>Phys. Lett. B</i> <b>50</b>, 1 (1974).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1975 </td> <td>Review of Particle Properties: Supplement to 1974 edition </td> <td><a href="/wiki/Lina_Galtieri" title="Lina Galtieri">A. Barbaro-Galtieri</a> <i>et al.</i>, <a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v47/p535"><i>Rev. Mod. Phys.</i> <b>47</b>, 535 (1975).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1976 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v48/pS1">T. G. Trippe <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>48</b>, S1 (1976).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1977 </td> <td>New Particle Searches and Discoveries: A Supplement to the 1976 Edition of "Review of Particle Properties" </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(77)90026-0">C. Bricman <i>et al.</i> <i>Phys. Lett. B</i> <b>68</b>, 1 (1978).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1978 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(78)90922-X">C. Bricman <i>et al.</i> <i>Phys. Lett. B</i> <b>75</b>, 1 (1978).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1980 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v52/pS1">R. L. Kelly <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>52</b>, S1 (1980).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1982 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(82)91286-2">M. Roos <i>et al.</i>, <i>Phys. Lett. B</i> <b>111</b>, 1 (1982).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1984 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/RMP/v56/pS1">C. G. Wohl <i>et al.</i>, <i>Rev. Mod. Phys.</i> <b>56</b>, S1 (1986).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1986 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(86)90790-2">M. Aguilar-Benítez <i>et al.</i>, <i>Phys. Lett. B</i> <b>170</b>, 1 (1986).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1988 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/0370-2693(88)90505-9">G. P. Yost <i>et al.</i>, <i>Phys. Lett. B</i> <b>204</b>, 1 (1988).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1990 </td> <td>Review of Particle Properties </td> <td>J. J. Hernández <i>et al.</i>, <i>Phys. Lett. B</i> <b>239</b>, 1 (1990). </td></tr> <tr style="background:#ddd;" valign="top"> <td>1992 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/PRD/v45/pS1">K. Hikasa <i>et al.</i>, <i>Phys. Rev. D</i> <b>45</b>, S1 (1992).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1994 </td> <td>Review of Particle Properties </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/PRD/v50/p1173">L. Montanet <i>et al.</i>, <i>Phys. Rev. D</i> <b>50</b>, 1173 (1994).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>1996 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/PRD/v54/p1">R. M. Barnett <i>et al.</i>, <i>Phys. Rev. D</i> <b>54</b>, 1 (1996).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>1998 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1007/s10052-998-0104-x">C. Caso <i>et al.</i>, <i>Eur. Phys. J. C</i> <b>3</b>, 1 (1998).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2000 </td> <td>Review of Particle Physics </td> <td>D. E. Groom <i>et al.</i>, <i>Eur. Phys. J. C</i> <b>15</b>, 1 (2000). </td></tr> <tr style="background:#eee;" valign="top"> <td>2002 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="http://link.aps.org/abstract/PRD/v66/e010001">K. Hagiwara <i>et al.</i>, <i>Phys. Rev. D</i> <b>66</b>, 010001 (2002).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2004 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/j.physletb.2004.06.001">S. Eidelman <i>et al.</i>, <i>Phys. Lett. B</i> <b>591</b>, 1 (2004).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>2006 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="http://stacks.iop.org/JPhysG/33/1">W.-M. Yao <i>et al.</i>, <i>J. Phys. G</i> <b>33</b>, 1 (2006).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2008 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/j.physletb.2008.07.018">C. Amsler <i>et al.</i>, <i>Phys. Lett. B</i> <b>667</b>, 1 (2008).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>2010 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1088/0954-3899/37/7A/075021">K. Nakamura <i>et al.</i> (Particle Data Group), J. Phys. G <b>37</b>, 075021 (2010)</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2012 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1103/PhysRevD.86.010001">J. Beringer <i>et al.</i> (Particle Data Group), Phys. Rev. D <b>86</b>, 010001 (2012)</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>2014 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1088/1674-1137/38/9/090001">K.A. Olive <i>et al.</i> (Particle Data Group), Chin. Phys. C <b>38</b>, 090001 (2014).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2016 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://dx.doi.org/10.1088/1674-1137/40/10/100001">C. Patrignani <i>et al.</i> (Particle Data Group), Chin. Phys. C <b>40</b>, 100001 (2016).</a> </td></tr> <tr style="background:#eee;" valign="top"> <td>2018 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://doi.org/10.1103/PhysRevD.98.030001">M. Tanabashi <i>et al.</i> (Particle Data Group), Phys. Rev. D <b>98</b>, 030001 (2018).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2020 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://doi.org/10.1093/ptep/ptaa104">P.A. Zyla <i>et al.</i> (Particle Data Group), 083C01 (2020).</a> </td></tr> <tr style="background:#ddd;" valign="top"> <td>2022 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://doi.org/10.1093/ptep/ptac097">R.L. Workman <i>et al.</i> (Particle Data Group), Prog. Theor. Exp. Phys. 2022, 083C01 (2022).</a> </td></tr> <tr> <td>2024 </td> <td>Review of Particle Physics </td> <td><a rel="nofollow" class="external text" href="https://doi.org/10.1103/PhysRevD.110.030001">S. Navas <i>et al.</i> (Particle Data Group), Phys. Rev. D 110, 030001 (2024).</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Particle_Data_Group&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/CODATA" class="mw-redirect" title="CODATA">CODATA</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Particle_Data_Group&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://pdg.lbl.gov/2020/html/receive_our_products.html">"Order PDG products"</a>. <i>Particle Data Group</i><span class="reference-accessdate">. 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title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Reviews+of+Modern+Physics&rft.atitle=Tables+of+Elementary+Particles+and+Resonant+States&rft.volume=35&rft.issue=2&rft.pages=314-323&rft.date=1963&rft_id=info%3Adoi%2F10.1103%2FRevModPhys.35.314&rft_id=info%3Abibcode%2F1963RvMP...35..314R&rft.au=M.+Roos&rfr_id=info%3Asid%2Fen.wikipedia.org%3AParticle+Data+Group" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Particle_Data_Group&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://pdg.lbl.gov">Particle Data Group official site</a> and <a rel="nofollow" class="external text" href="https://journals.aps.org/prd/pdf/10.1103/PhysRevD.98.030001">electronic edition of <i>Review of Particle Physics</i> 2018</a></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080910175236/http://sebintokyo.free.fr/images/particlereview1.jpg">Photo of the 2004 <i>Review of Particle Physics</i></a></li> <li><a rel="nofollow" class="external text" href="https://www.symmetrymagazine.org/?pid=1000382">First edition of the wallet card from the Particle Data Group, 1958</a></li> <li><a rel="nofollow" class="external text" href="https://pdg.lbl.gov/current/booklet.pdf">Particle Physics Booklet, current version</a></li> <li><a rel="nofollow" class="external text" href="https://pdg.lbl.gov/2011/download/rpp-2010-booklet.pdf">Particle Physics Booklet, July 2010</a></li> <li><a rel="nofollow" class="external text" href="https://pdg.lbl.gov/2014/download/rpp-2014-booklet.pdf">Particle Physics Booklet, 2014</a></li> <li><a rel="nofollow" class="external 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