The Higgs boson

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</div>  </div>  </nav> </nav> </div> </section> </div> </div> </div> </div> </header> <main role="main"> <a id="main-content" tabindex="-1"></a> <div class="container-fluid cern-page-display-page cern-page-display-story_page"> <div class="has-no-column wrapper-center col-md-12 col-sm-12 col-xs-12"> <div class="region region-content"> <div data-drupal-messages-fallback class="hidden"></div> <div data-drupal-messages-fallback class="hidden"></div> <div class="layout layout__region story-page-node-layout-content"> <div class="field--items"> <div class="field--item"> <div class="component-row component-row__display__fluid section-navigation component-row__has-header effect_none is_full_height"> <div class="component-row__row"> <div class="component-row__column component-row__center section-has-no-column col-md-12 col-sm-12 col-xs-12"> <div class="box-effects-wrapper "> <div class="cern-component-header-blocks component-header"> <div id="header-blocks--2" class="owl-carousel owl-theme component-header__carousel header-carousel"> <div class="header-block"> <div class="header-block__title"> <h3 class="header-block__name" > <span>The Higgs boson</span> <span class="header-block__name__underline"></span> </h3> <span class="header-block__subhead" ><hr> <p class="text-align-center">You and everything around you are made of particles.<br> But when the universe began, no particles had mass; they all sped around at the speed of light.<br> Stars, planets and life could only emerge because particles gained their mass from a fundamental field associated with the Higgs boson.<br> The existence of this mass-giving field was confirmed in 2012, when the Higgs boson particle was discovered at CERN.</p> </span> </div> <div class="background__veil"></div> <div class="background-component background__image" style="background:url('/sites/default/files/2022-06/Artboard%201-100.jpg') no-repeat center top / cover; height: 100%;"></div> </div> </div> <span 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class="preview-card__title"> <h3><a href="/science/physics/higgs-boson/ten-years" title="What have we learned since the discovery?"> <span style="color:"> What have we learned since the discovery? </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> <div id="preview-card--11" class="component-preview-cards box-pattern simple-display story_page" style="background:url('//cds.cern.ch/images/OPEN-PHO-ACCEL-2015-001-1/file?size=medium') no-repeat center center / cover" data-background="//cds.cern.ch/images/OPEN-PHO-ACCEL-2015-001-1/file?size=medium" class="component-preview-cards box-pattern simple-display story_page"> <a class="box-link" target="" href="/science/physics/higgs-boson/future"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/science/physics/higgs-boson/future" title="What's next for Higgs boson research?"> <span style="color:"> What's next for Higgs boson research? </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> <div id="preview-card--12" class="component-preview-cards box-pattern simple-display story_page" style="background:url('/sites/default/files/2022-07/668454536_b0ec8bf7ee_b_1.jpg') no-repeat center center / cover" data-background="/sites/default/files/2022-07/668454536_b0ec8bf7ee_b_1.jpg" class="component-preview-cards box-pattern simple-display story_page"> <a class="box-link" target="" href="/science/physics/higgs-boson/why"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/science/physics/higgs-boson/why" title="How does the Higgs boson impact our lives?"> <span style="color:"> How does the Higgs boson impact our lives? </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> <div id="preview-card--13" class="component-preview-cards box-pattern simple-display story_page" style="background:url('//cds.cern.ch/images/CERN-HOMEWEB-PHO-2012-001-1/file?size=medium') no-repeat center center / cover" data-background="//cds.cern.ch/images/CERN-HOMEWEB-PHO-2012-001-1/file?size=medium" class="component-preview-cards box-pattern simple-display story_page"> <a class="box-link" target="" href="/news/series/higgs10"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/news/series/higgs10" title="Higgs10 feature series"> <span style="color:"> Higgs10 feature series </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> <div class="preview-card__category" style="color:"> The stories behind the discovery </div> </div> </div> </div> </div> <div class="component-media-content box-pattern simple-display image" style="background-image:url('//cds.cern.ch/images/CMS-PHO-EVENTS-2012-005-1/file?size=medium'); background-repeat: no-repeat; background-position: center center; background-size: cover; background-color: ;"> <a class="box-link" target="" href="/resources/image/physics/higgs-collection-images-gallery"></a> <div class="component-media-content__veil"></div> <div class="component-media-content__wrapper"> <div class="component-media-content__subwrapper"> <div class="component-media-content__icon"> <div class="type_video">video</div> <div class="type_image">image</div> </div> <div class="component-media-content__title"> <h3> <a href="/resources/image/physics/higgs-collection-images-gallery" title="Higgs boson images"> <span class="text-color" > Higgs boson images </span> </a> </h3> </div> </div> </div> </div> <div class="component-media-content box-pattern simple-display video" style="background-image:url('//cds.cern.ch/images/CERN-HI-1207136-101/file?size=medium'); background-repeat: no-repeat; background-position: center center; background-size: cover; background-color: ;"> <a class="box-link" target="" href="/resources?title=&topic=All&type=61&audience=All&field_p_resource_display_tags_target_id%5B0%5D%5Btarget_id%5D=102&date_from=&date_to=&page=0"></a> <div class="component-media-content__veil"></div> <div class="component-media-content__wrapper"> <div class="component-media-content__subwrapper"> <div class="component-media-content__icon"> <div class="type_video">video</div> <div class="type_image">image</div> </div> <div class="component-media-content__title"> <h3> <a href="/resources?title=&topic=All&type=61&audience=All&field_p_resource_display_tags_target_id%5B0%5D%5Btarget_id%5D=102&date_from=&date_to=&page=0" title="Higgs boson videos"> <span class="text-color" > Higgs boson videos </span> </a> </h3> </div> </div> </div> </div> <div id="preview-card--14" class="component-preview-cards box-pattern simple-display story_page" style="background:url('//cds.cern.ch/images/ATLAS-PHO-COLLAB-2012-011-1/file?size=medium') no-repeat center center / cover" data-background="//cds.cern.ch/images/ATLAS-PHO-COLLAB-2012-011-1/file?size=medium" class="component-preview-cards box-pattern simple-display story_page"> <a class="box-link" target="" href="/resources/faqs/five-sigma"></a> <div class="component-preview-cards__veil"></div> <div class="component-preview-cards__box_wrapper"> <div class="component-preview-cards__box"> <div class="preview-card__title"> <h3><a href="/resources/faqs/five-sigma" title="What does “five sigma” mean?"> <span style="color:"> What does “five sigma” mean? </span> </a></h3> </div> <div class="preview-card__body"></div> <div class="preview-cards__subtext"> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="field--item"> <div class="component-row component-row__display__fluid section-navigation effect_none"> <div class="component-row__row"> <div class="component-row__column component-row__center section-has-no-column col-md-12 col-sm-12 col-xs-12"> <div class="box-effects-wrapper "> <div class="component-division" style="background:url('//cds.cern.ch/images/OPEN-PHO-ACCEL-2013-052-1/file?size=medium') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/what" title="What is the Higgs boson?"> <span>What is the Higgs boson?</span> </a> </div> <div class="component-division__text__text"> <span><p>In our current description of Nature, every particle is a wave in a field. The most familiar example of this is light: light is simultaneously a wave in the electromagnetic field and a stream of particles called photons.</p> <p>In the Higgs boson's case, the field came first. The Higgs field was proposed in 1964 as a new kind of field that fills the entire Universe and gives mass to all elementary particles. The Higgs boson is a wave in that field. Its discovery confirms the existence of the Higgs field.</p> </span> </div> </div> </div> <div class="component-division topright" style="background:url('//cds.cern.ch/images/OPEN-PHO-CHART-2015-001-1/file?size=large') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/what#BEH" title="How do particles get mass?"> <span>How do particles get mass?</span> </a> </div> <div class="component-division__text__text"> <span><p>Particles get their mass by interacting with the Higgs field; they do not have a mass of their own.</p> <p>The stronger a particle interacts with the Higgs field, the heavier the particle ends up being. Photons, for example, do not interact with this field and therefore have no mass. Yet other elementary particles, including electrons, quarks and bosons, do interact and hence have a variety of masses.</p> <p>This mass-giving interaction with the Higgs field is known as the Brout-Englert-Higgs mechanism, proposed by theorists Robert Brout, François Englert and Peter Higgs.</p> </span> </div> </div> </div> <div class="component-division" style="background:url('//cds.cern.ch/images/CMS-PHO-EVENTS-2013-003-1/file?size=large') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/how" title="How did we discover the Higgs boson?"> <span>How did we discover the Higgs boson?</span> </a> </div> <div class="component-division__text__text"> <span><p>The Higgs boson can't be “discovered” by finding it somewhere but has to be created in a particle collision. Once created, it transforms – or “decays” – into other particles that can be detected in particle detectors.</p> <p>Physicists look for traces of these particles in data collected by the detectors. The challenge is that these particles are also produced in many other processes, plus the Higgs boson only appears in about one in a billion LHC collisions. But careful statistical analysis of enormous amounts of data uncovered the particle's faint signal in 2012.</p> </span> </div> </div> </div> <div class="component-division topright" style="background:url('//cds.cern.ch/images/CERN-HI-1207136-58/file?size=large') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/ten-years" title="How did physicists know it was the Higgs?"> <span>How did physicists know it was the Higgs?</span> </a> </div> <div class="component-division__text__text"> <span><p>On 4 July 2012, the ATLAS and CMS collaborations announced the discovery of a new particle to a packed auditorium at CERN.</p> <p>This particle had no electrical charge, it was short-lived and it decayed in ways that the Higgs boson should, according to theory. To confirm if it really was the Higgs boson, physicists needed to check its “spin” – the Higgs boson is the only particle to have a spin of zero.</p> <p>By examining two and a half times more data, they concluded in March 2013 that, indeed, some kind of Higgs boson had been discovered. </p> </span> </div> </div> </div> <div class="component-division" style="background:url('//cds.cern.ch/images/CERN-HOMEWEB-PHO-2022-026-1/file?size=large') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/ten-years" title="What have we learned since the Higgs boson discovery?"> <span>What have we learned since the Higgs boson discovery?</span> </a> </div> <div class="component-division__text__text"> <span><p>Discovering the Higgs boson was just the beginning. In the ten years since, physicists have examined how strongly it interacts with other particles, to see if this matches theoretical predictions.</p> <p>Interaction strength can be measured experimentally by looking at Higgs boson production and decay: the heavier a particle the more likely the Higgs boson is to decay into or be produced from it. Interaction with tau leptons was discovered in 2016 and interaction with top and bottom quarks in 2018. </p> <p>But there is much more still to learn about this elusive particle.</p> </span> </div> </div> </div> <div class="component-division topright" style="background:url('//cds.cern.ch/images/OPEN-PHO-ACCEL-2015-001-1/file?size=large') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/future" title="What are we going to look for next?"> <span>What are we going to look for next?</span> </a> </div> <div class="component-division__text__text"> <span><p>We still have much to learn about the Higgs boson.</p> <p>Is it one-of-a-kind or is there a whole Higgs sector of particles? Does it help to explain how the universe was formed, with matter triumphing over antimatter? Does it get its mass by interacting with itself in some way? And why is its mass so small, suggesting the existence of a whole new mechanism.</p> <p>Could dark matter and other new particles be found thanks to interactions with the Higgs boson?</p> <p>Ten years after the discovery, the journey has only just begun.</p> </span> </div> </div> </div> <div class="component-division" style="background:url('/sites/default/files/2022-07/668454536_b0ec8bf7ee_b.jpg') no-repeat center center / cover"> <div class="component-division__text"> <div class="component-division__text__link"> <a href="/science/physics/higgs-boson/why" title="How does the Higgs boson impact everyday life?"> <span>How does the Higgs boson impact everyday life?</span> </a> </div> <div class="component-division__text__text"> <span><p>The Higgs boson has, and will continue to have, an impact on our lives, in ways you may not have imagined.</p> <p>It is part of the answer to why we – and everything we interact with – have mass, feeding our natural human curiosity about our universe and 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