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A Major Milestone for an Underground Dark Matter Search Experiment

Crews working on the largest U.S. experiment designed to directly detect dark matter completed a major milestone last month, and are now turning their sights toward startup after experiencing some delays due to global pandemic precautions.

VIDEO: Dark Matter Day Q&A with LUX-ZEPLIN Spokesperson Kevin Lesko

Kevin Lesko, a spokesperson for the LUX-ZEPLIN (LZ) dark matter experiment and senior physicist at Berkeley Lab, shares his insights about the mysteries of dark matter, what we know about it, and what we hope to learn about it from LZ, in this Q&A interview at Sanford Lab.

Berkeley Lab Scientists Contribute to New Exploration of Higgs Boson Interactions

A new analysis, featuring important contributions by Berkeley Lab scientists, strongly supports the hypothesis that the Higgs boson interacts with muons, which are heavier siblings of electrons and the lightest particles yet to reveal evidence for these interactions.

Shhh! These Tests Will Enable a Quieter Search for Dark Matter

The subatomic world just got a lot quieter for the LUX-ZEPLIN (LZ) dark matter experiment. The LZ collaboration has completed 1,200 tests that describe the levels of radioactive decay of the LZ detector components and help to ensure a low level of background “noise” from unwanted particle signals.

Berkeley Team Plays Key Role in Analysis of Particle Interactions That Produce Matter From Light

Researchers at Berkeley Lab played a key role in an analysis of data from the world’s largest particle collider that found proof of rare, high-energy particle interactions in which matter was produced from light.

CERN’s Large Hadron Collider Creates Matter From Light

The Large Hadron Collider transforms matter into energy and then back into different forms of matter. But on rare occasions, it can skip the first step and collide pure energy – in the form of electromagnetic waves. Now, scientists have discovered particles of light merging and transforming into W bosons, confirming that at high enough energies, forces that seem separate in our everyday lives are united.

Lead Lab Selected for Next-Generation Cosmic Microwave Background Experiment

The largest collaborative undertaking yet to explore the relic light emitted by the infant universe has taken a step forward with the U.S. Department of Energy’s selection of Lawrence Berkeley National Laboratory (Berkeley Lab) to lead the partnership of national labs, universities, and other institutions that will carry out the DOE roles and responsibilities for the effort. This next-generation experiment, known as CMB-S4, or Cosmic Microwave Background Stage 4, is planned as a joint DOE and NSF project.

International Physicists Join Forces in Hunt for Sterile Neutrinos

An international group of more than 260 scientists has produced one of the most stringent tests to date for the existence of sterile neutrinos, which are theorized particles related to the three known types, or “flavors,” of neutrinos but that are not directly detectable.

Another Win for the Standard Model: New Study Defies Decades-Old ‘Discrepancy’ With High-Precision Measurement

A new study, led by a team of researchers including Berkeley Lab’s Josh McFayden, dives into a decades-old discrepancy in measurements relating to a Standard Model of particle physics pillar known as “lepton flavor universality,” and provides strong evidence to resolve it.

Natalie Roe Named Berkeley Lab’s Associate Director for Physical Sciences 

Natalie Roe, who joined Lawrence Berkeley National Laboratory (Berkeley Lab) as a postdoctoral fellow in 1989 and has served as Physics Division director since 2012, has been named the Lab’s Associate Laboratory Director (ALD) for the Physical Sciences Area. Her appointment was approved by the University of California today and was effective July 1, 2020. The announcement follows an international search.