First 'neutral current' observation

First 'neutral current' observation

A138/0118 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 19.7MB

Downloadable file size: 2.4MB

Price image Pricing

Please login to use the price calculator

This image is part of the feature 50 Years Of Cern Physics
This image is part of the feature Particle Art


Restrictions: Editorial use only. This image may not be used to state or imply endorsement by CERN of any product, activity or service

Caption: First observation of a 'neutral current' event. In this photo from the Gargamelle bubble chamber at CERN, a beam of neutrinos enters from bottom. Being neutral, the neutrinos leave no tracks, but at bottom left one sets in motion an electron, which heads up the picture, curling & fragmenting as it radiates photons. (The track curving across the top of the photo is not part of this event). This neutrino-electron interaction can only be a 'neutral current' event, due to the weak nuclear force & exchange of a force-carrying neutral Z particle. In 1972-3, Gargamelle physicists found this & 165 other examples of this interaction, which was predicted by the 'electroweak' theory.

Release details: Model release not required. Property release not required.

Keywords: bubble chamber photograph, cern, electroweak theory, gargamelle bubble chamber, high-energy physics, image, neutral current event, neutrinos, particle physics, photo, subatomic particles, the particle odyssey, weak nuclear force, z particle

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.