The W boson is a messenger particle of the weak nuclear force. “While this is an intriguing result, the measurement needs to be confirmed by another experiment before it can be interpreted fully,” said Fermilab Deputy Director Joe Lykken. Future measurements will be needed to shed more light on the result. The new value is in agreement with many previous W boson mass measurements, but there are also some disagreements. If confirmed, this measurement suggests the potential need for improvements to the Standard Model calculation or extensions to the model. When we finally unveiled the result, we found that it differed from the Standard Model prediction.” “We took into account our improved understanding of our particle detector as well as advances in the theoretical and experimental understanding of the W boson’s interactions with other particles. Kotwal of Duke University, who led this analysis and is one of the 400 scientists in the CDF collaboration. “The number of improvements and extra checking that went into our result is enormous,” said Ashutosh V. The result: The new mass value shows tension with the value scientists obtain using experimental and theoretical inputs in the context of the Standard Model. The new precision measurement, published in the journal Science, allows scientists to test the Standard Model of particle physics, the theoretical framework that describes nature at its most fundamental level. It corresponds to measuring the weight of an 800-pound gorilla to 1.5 ounces. Using data collected by the Collider Detector at Fermilab, or CDF, scientists have now determined the particle’s mass with a precision of 0.01%-twice as precise as the previous best measurement. Department of Energy’s Fermi National Accelerator Laboratory announced today that they have achieved the most precise measurement to date of the mass of the W boson, one of nature’s force-carrying particles. view moreĪfter 10 years of careful analysis and scrutiny, scientists of the CDF collaboration at the U.S. About 400 scientists at 54 institutions in 23 countries are still working on the wealth of data collected by the experiment.
LArSoft will send a request via e-mail to elicit approval of Genie and GEANT4 updateĬhange to the Argon beta spectrum.can we schedule an automatic periodic garbage collection instead, or a garbage collection every N pushes? We don't know why the experts chose this solution.
git repository configuration changed so that pushes are slower due to per-push garbage collection operations, to reduce the size of the repositories and the.attendance on the workshop was good (more than 40 people).will changes in CMakeLists.txt files be necessary? Yes, and they should be scriptable.planning to move geometry service providers into larcorealg.proposing to adopt updated Genie (2.12.6) and GEANT4 (10.3).Present: Vito Di Benedetto, Krzysztof Genser, Herbert Greenlee, Thomas Junk, Katherine Lato, Marc Paterno, Gianluca Petrillo, Erica Snider, Jason Stock, Hans Wenzel
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